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gene_name
string
gene_id
string
category
string
cell_name
string
tissue_type
string
phenotype
string
aging_type
string
experiment
string
description
string
target_gene
string
regulatory_type_of_target_gene
string
target_gene_experiment
string
target_gene_description
string
regulatory_pathway
string
regulatory_type_of_pathway
string
pathway_experiment
string
pathway_description
string
species
string
experimental_category
string
aging_characteristic
string
pmid
int64
source
string
Alizarin_red_S_staining
int64
Annexin_V_binding_assay
int64
Apoptosis_assay
int64
Atomic_force_microscopy_imaging
int64
Autofluorescence
int64
Behavioral_assessment
int64
BrdU_analysis
int64
BrdU_assay
int64
CCK_8_assay
int64
CHIP
int64
Cell_activity_assay
int64
Cell_apoptosis_assay
int64
Cell_counting
int64
Cell_cycle_analysis
int64
Cell_growth_assay
int64
Cell_migration_assay
int64
Cell_morphological_analysis
int64
Cell_proliferation_assay
int64
Cell_transfection
int64
Cell_viability_assay
int64
ChIP_qPCR
int64
Clonal_expansion_assay
int64
Clonogenic_assay
int64
Colony_formation_assay
int64
Colony_formation?assay
int64
Comet_assay
int64
Crystal_violet_assay
int64
Cytokine_assay
int64
DAPI_staining
int64
DNA_FISH
int64
DNA_fiber_assay
int64
ELISA
int64
EdU_Assay
int64
EdU_assay
int64
EdU_assay/SA__gal_activity_assay
int64
EdU_cell_proliferation_assay
int64
FACS_analysis
int64
FCM_analysis
int64
FISH
int64
FITC_Annexin_V/PI
int64
Flow_cyotmetry
int64
Flow_cytometry
int64
Fluorescence_quenching_assay
int64
GO_analysis
int64
GSEA_analysis
int64
Giemsa_staining
int64
Growth_curve_assay
int64
Growth_kinetics_analysis
int64
Histochemical_staining
int64
Histological_images_analysis
int64
Histological_staining
int64
Hoechst_staining
int64
IHC
int64
IHC_staining
int64
Immunoblotting
int64
Immunochemical_staining
int64
Immunocytochemistry
int64
Immunofluorescence
int64
Immunohistochemical_staining
int64
Immunohistochemistry
int64
Immunostaining
int64
Immunostainings
int64
JC_1_probe_staining
int64
Ki67_staining
int64
Knockdown
int64
LDH_activity_assay
int64
Lifespan_assay
int64
Luciferase_reporter_assay
int64
MTS_assay
int64
MTT_assay
int64
Microarray
int64
Northern_blot
int64
PCR
int64
PI_staining
int64
Prevent
int64
RNA_seq
int64
ROS_assay
int64
ROS_staining
int64
RT__PCR
int64
RT_PCR
int64
RT_qPCR
int64
SA__Gal_activity_assay
int64
SA__gal_activity
int64
SA__gal_activity_assay
int64
SA__gal_staining
int64
SAHF
int64
Safranin_O_fast_green_staining
int64
Safranin_O/Fast_Green_staining
int64
Safranin_O
int64
Southern_Blot
int64
Southern_blot
int64
Southern_blot_analysis
int64
Southern_hybridization
int64
Southern_hybridization_analysis
int64
Survival_curve
int64
TRAP_assay
int64
TRF_analysis
int64
TRF_assay
int64
TUNEL_assay
int64
Telomerase_Assay
int64
Telomerase_activity_assay
int64
Telomerase_assay
int64
Telomere_length_assay
int64
Transmission_electron_microscopy
int64
Transwell_assay
int64
Trypan_blue_staining
int64
Tube_formation_assay
int64
WST_1_assay
int64
WST_8_assay
int64
Western_blot
int64
XTT_assay
int64
miRNA_qRT_PCR
int64
qPCR
int64
qPT_PCR
int64
qRT_PCR
int64
qRT¨CPCR
int64
¦ÃH2AX_staining
int64
MYC
4609
protein coding
TRE293
--
Aging
Prevent
SA--gal activity assay//Western blot
TRE293 cells treated with c-Myc shRNA demonstrated significant changes in senescence and induced the p53/p21CIP1 pathway.
BAG2
Downregulation
Western blot//BrdU assay//SA-¦Â-gal activity assay
In cells that demonstrated high levels of BAG2 in response to SP1 over-expression, transfection of c-Myc was shown to abrogate the BAG2 mRNA levels in a concentrationdependent manner.
p53-p21
Upregulation
Western blot
TRE293 cells treated with c-Myc shRNA demonstrated significant changes in senescence and induced the p53/p21CIP1 pathway.
Human
HL
cellular senescence
22,146,591
Gene
0
0
0
0
0
0
0
0
0
0
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0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
NLRX1
79671
protein coding
HCCLM3
--
Hepatocellular carcinoma
Accelerate
CCK-8 assay//SA--gal activity assay
We found that NLRX1 overexpression could hinder cell proliferation in HCCLM3 cells, while knocking down NLRX1 in Huh7 resulted in significant higher proliferation rates. NLRX1-OE significantly increased SA-¦Â-gal activity, indicating a higher proportion of aging in NLRX1-OE cells compared to cells transfected with vector.
p21
Upregulation
Western blot//RT-PCR
We found that NLRX1-OE could effectively upregulate P21 expression, and expressions of downstream targets of P21 including CDK1 and CDK2 were significantly repressed due to high level of P21 expression caused by NLRX1 overexpression, while knocking down NLRX1 in Huh7 resulted in increased expression of CDK1 and CDK2.
PI3K-Akt
Downregulation
Western blot
NLRX1-OE markedly inhibited the phosphorylation of mTOR, indicating that NLRX1 suppresses PI3K-AKT signaling.
Human
HL
cellular senescence
29,482,578
Gene
0
0
0
0
0
0
0
0
1
0
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0
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0
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0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
PRKAA1
5562
protein coding
NIH-3T3
--
Aging
Prevent
SA--gal activity assay
Next, we observed that when the H2O2-treated cells were incubated with medium containing Met and BBR, there was a dose-dependent decrease in the percentage of SA-¦Â-Gal-positive cells, which was similar to that caused by rapamycin treatment.As expected, when combined with CC, the effects of Met or BBR on senescence prevention were largely blunted when CC was coexisted, as indicated by the remarkable increase in SA-¦Â-Gal-positive cells.
LC3//p62
Downregulation//Downregulation
Western blot
With Western blot assay, we found that both Met and BBR alleviated the H2O2-induced accumulation of the LC3 and p62 proteins, and this alleviation was consistent with the effect of rapamycin.
mTOR
Downregulation
Western blot
Moreover, we found that BBR treatment significantly suppressed mTOR phosphorylation in senescent cells, similar and even stronger than that induced by rapamycin and insulin as an mTOR activation control.
Human
L
delay aging
26,890,602
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
IGFBP7
3490
protein coding
MDA-MB-231
--
Breast cancer
Accelerate
Cell morphological analysis//Flow cytometry//SA--gal activity assay
IGFBP7 treatment of MDA-MB-231 cells increased the percentage of cells in G1 (73.86%) compared to untreated cells (54.14%), with a consequent decrease in the percentage of cells in S phase (15.85% in IGFBP7-treated cells versus 33.8% in untreated controls).We found that MDA-MB-231 cells treated with IGFBP7 for 2 days underwent morphological changes characterized by cell aggregation with strong expression of senescence-associated ¦Â-galactosidase .
p21//p53
Upregulation//Upregulation
Western blot
In agreement with this, we found that IGFBP7-treated MDAMB-231 cells had higher p21 and p53 expression than untreated cells.
p38 MAPK
Upregulation
Western blot
Levels of phosphorylated p38 MAPK were dramatically increased by IGFBP7 treatment.
Human
L
apoptosis
21,997,538
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
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0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
MEF2A
4205
protein coding
HUVEC
Human umbilical vein
Cardiovascular disease
Prevent
Cell viability assay//SA--gal activity assay
The percentage of senescent phenotype cells in MEF2A overexpression group was significantly lower than that in the empty plasmid group and the MEF2A mutant group (pc-gab-MEF2A-MV30).MEF2A overexpression in HUVECs significantly increased cell viability.
p53
Downregulation
Western blot
The level of p53 was significantly decreased?in the MEF2A-overexpression HUVECs.
PI3K-p-AKT-SIRT1
Upregulation
qRT-PCR//Western blot
PIK3CA, PIK3CG, and SIRT1 mRNA levels were significantly up-regulated in the MEF2Aoverexpression HUVECs, and the protein levels of PIK3CA, PIK3CG, SIRT1, and p-Akt notably increased .
Human
L
Others
31,182,679
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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1
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0
0
0
0
0
0
MIR584
693169
ncRNA
MGC803,SGC-7901
--
Gastric cancer
Accelerate
SA--gal activity assay//Western blot
The miR-584- 5p-mimic-transfected cells showed strong blue SA-¦Â-gal staining, while only scattered SA-¦Â-gal-positive cells were detected in miR-584-5p-inhibitor-transfected group compared with the corresponding control cells.The expression of p53, p21 and p16 was enhanced after miR584-5p-mimic-transfection. Conversely, the expression of p53, p21 and p16 was reduced after miR-584-5p-inhibitor transfection.
WWP1//p53
Downregulation//Upregulation
SA-¦Â-gal activity assay//Western blot//Flow cytometry
Intriguingly, co-transfection of MGC803 cells with miR-584-mimic and either LV-WWP1 or LV-NC showed that ectopic expression of WWP1 effectively reversed the promotion of cellular senescence resulting from miR-584-5p overexpression. Similarly, the effects of miR584-5p knockdown in SGC7901 were counteracted by WWP1 downregulation. The induction of SA-¦Â-Gal positively stained cells by miR-584-5p was also reduced by treatment of pifithrin-¦Á, indicating the involvement of p53 in miR-584-5p-induced cellular senescence.In accordance with the analysis of GC tissues, Western blot analysis showed an inverse correlation between WWP1 expression and miR-584-5p expression in GC cell lines and GES-1 cells.The expression of p53, p21 and p16 was enhanced after miR-584-5p-mimic-transfection.
TGF¦Â
Activation
Western blot//Immunofluorescence
Western blot analysis of the expression of WWP1 and key proteins involved in TGF¦Â signaling pathway showed that the protein levels of T¦ÂR1, Smad2, Smad4, and the CDK inhibitor p15 were increased after miR-584-5p-mimic transfection, while the opposite effects were observed after miR-584-5p-inhibitor transfection.However, the expression of T¦ÂR1, Smad2, Smad4, and p15 was decreased in LY364947 treated cells compared with that of the control group. Furthermore, immunofluorescence assays revealed a dramatically positive correlation between the levels of miR-584-5p and TGF¦Â.
Human
HL
cellular senescence
28,431,583
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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0
0
0
1
0
0
0
0
0
0
0
TP53
7157
protein coding
EJ
--
Aging
Accelerate
Knockdown//SA--gal activity assay
The adenovirus-mediated expression of p53 in EJ p53-null human bladder cancer cells promoted remarkable morphological changes and senescence-associated ¦Â-galactosidase (SA-¦Â-gal) activity, which are features of premature senescence phenotypes,within 6 days. Irreversible growth arrest, which is characteristic of cellular senescence, was also confirmed by a marked reduction in cell growth and decreased number of cells in the S-phase upon p53 expression.
p21//Akt
--//Activation
SA-¦Â-gal activity assay//Western blot
P53-mediated Akt activation and the inhibition of p53-induced SA-¦Â-gal activity by LY294002 treatment were also observed in H1299 human lung cancer cells .Akt and p21 separately regulate p53-induced ROS increases and cell cycle arrest, respectively.suppression of the induction of p21 expression successfully inhibited the p53-induced increase in SA-¦Â-gal activity and morphological changes. In addition, the p53-induced loss of proliferation and cell cycle arrest were inhibited by the suppression of p21 induction .We used a p21 shRNA retrovirus to specifically suppress the p53-mediated induction of p21 expression and cormnfied that its expression was effectively suppressed using Western blot analyses.
NF-¦ÊB-NOX4
--
SA-¦Â-gal activity assay//ChIP//RT-PCR
NOX4 knockdown resulted in the significant suppression of p53-induced SA-¦Â-gal activity but did not affect the loss of proliferation.Importantly, the chromatin immunoprecipitation (ChIP) assay results indicated that NF-kB binding to the putative binding site on the NOX4 promoter was enhanced by p53 expression, but this NF-kB binding was inhibited by BAY 11-7082 treatment. Furthermore, Akt inhibition by either LY294002 or Akt inhibitor IV treatment si gnificantly inhibited the increase in NF-kB binding in response to p53 expression, indicating that Akt activity is required for NF-kB binding to the NOX4 promoter.
Human
L
cellular senescence
28,691,365
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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0
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0
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0
0
0
0
0
0
0
0
0
0
0
0
NAMPT
10135
protein coding
MEF
--
Aging
Prevent
SA--gal activity assay
Over- expression of NAMPT in MEF cells slows down cellular senescence.Percentage of cells that is positive for SA- ¦Â- Gal activity in all Wt- MEF cells was dramatically increased from passage 6, consistent with the timing of CCP in Wt- MEF cells.we measured the expression level of several senescence marker genes. p16INK4a, p19ARF, and p21CIP1 are cell cycle inhibitors and their expression levels increase when cells enter senescence.
SIRT1
Upregulation
qRT-PCR
We finally examined whether SIRT1 activity is enhanced in response to NAMPT over- expression. Although SIRT1 has been shown to regulate cellular proliferation and senescence, this function is dependent on the robustness of the intrinsic NAMPT activity and NAD+ content. SIRT1 is also vital in regulating FOXO- mediated activation of antioxidant enzymes including SOD2 and Catalase. As we shown above, NAD+ content in Tg- MEF was higher than that in Wt- MEF cells. SIRT1 activity in Tg- MEF was approximately threefold higher than that in Wt- MEF cells, in line with the observed SOD2 and catalase up regulation.
--
--
--
--
Human
L
cellular senescence
29,178,516
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SIRT1
23411
protein coding
WI-38
--
Aging
Prevent
BrdU assay//SA--gal activity assay
As observed for the growth curves,expression of SIRT1 alone does not significantly affect the percentage of cells in S phase or the percentage of SA-¦Â-gal-positive cells when compared with control infected cells. However, expression of PML IV results in a striking decrease of BrdU-positive cells and a huge increase in SA-¦Â-gal Activate cells, as reported previously. Double-infected PML IV¨CSIRT1 cells exhibit a significant increase in the percentage of cells in S phase as compared with PML-infected cells, in addition to a marked decrease in the percentage of SA-¦Â-gal-positive cells.
p53
Binding
Pull-down assay
We performed pull-down assays with either full-length GST¨Cp53 or a series of GST¨Cp53 fusions expressing only the N-terminal, middle or C-terminal regions of the protein, and in vitro translated SIRT1. We observed specific binding of SIRT1 to full-length p53 as well as to GST¨Cp53(290¨C393), while weaker binding was seen with GST¨Cp53(90¨C290) and no binding occurred with the N-terminal p53 fusion.
--
--
--
--
Human
HL
cellular senescence
12,006,491
Gene
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
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0
0
0
0
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0
0
0
0
0
0
0
0
0
0
0
CDK5
1020
protein coding
Saos-2
--
Aging
Accelerate
Knockdown//SA--gal activity assay
SiCDK5 or dnCDK5 partially inhibited this activity, and interestingly, CDK5 overexpression enhanced the number of SA-¦Â-Gal-positive cells.
Rac1
Downregulation
SA-¦Â-gal activity assay
In the presence of activated Rac1, most pRb induction of SA-¦Â-Gal was compromised, a phenotype that was exacerbated by expression of dnCDK5, roscovitine, or siCDK5 treatment . Coexpression of CDK5 with pRb and RacV12 resulted in a partial rescue of SA-¦Â-Gal expression, suggesting that CDK5 might be antagonizing some aspect of Rac1 function. However, in cells transfected with RB and RacN17, coexpression of dnCDK5 and siCDK5 or roscovitine treatment in no way inhibited pRbinduced SA-¦Â-Gal expression.
--
--
--
--
Human
L
cellular senescence
15,024,070
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
MORC3
23515
protein coding
WI-38
--
Aging
Accelerate
SA--gal activity assay//Western blot
The percentage of SA-¦Â-Gal¨Cpositive cells infected with the MORC3-retrovirus vector (51.0¡À5.1%) was significantly greater than that of controls infected with vector alone (2.3¡À0.8%). MORC3 expression also strongly induced p16, another senescence marker.
p53
Activation
Luciferase reporter assay
FLAG-MORC3 expression enhanced transcriptional activation by endogenous p53 of a reporter containing 12 p53-responsive elements (PG12S) in a dose-dependent manner, but not activation of a reporter containing 14 mutated responsive elements (MG14S).
--
--
--
--
Human
L
cellular senescence
17,332,504
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
IGFBPL1
347252
protein coding
MCF-7
--
Aging
Accelerate
Cell counting//Flow cytometry//SA--gal activity assay
Cell proliferation of MCF-7 cells was severely inhibited following IGFBP-rP1 transfection,whereas there were indistinguishable differences in cell proliferation between the control vector-transfected and the untransfected cells. On day 7, the IGFBP-rP1-transfected MCF-7 cells had an enlarged flat morphology,characteristic of senescent cells. At the same time, a significant increase in senescence-associated-¦Â-galactosidase (SA-¦Â-gal) activity was detected in IGFBP-rP1-transfected MCF-7 cells, as compared with control cells transfected with empty vectors or the cells that had not been transfected at all. Addition of CM from IGFBP-rP1-transfected cells to untransfected MCF-7 cells blocked cell proliferation and increased SA-¦Â-gal activity, whereas CM from the control vector (pEGFP-N1)-transfected or untransfected cells failed to inhibit cellular proliferation and induce senescence.A significant increase in the cell population at the G /G1phase of the cell cycle was detected in IGFBP-rP1-transfected MCF-7 cells, which is one of the typical phenotypes in cellular senescence.
p21
Upregulation
Knockdown//Western blot//Cell counting//SA-¦Â-gal activity assay
Basal and IGFBP-rP1-inducible p21 levels deceased dramatically in p21 knockdown MCF-7 cells.Accordingly, IGFBP-rP1-mediated pRb dephosphorylation was substantially reduced in these cells. We also examined cell proliferation and cellular senescence in response to IGFBP-rP1 in parental and p21 knockdown MCF-7 cells. The results showed that cell proliferation block and increased SA-¦Â-gal activity in response to IGFBP-rP1 were partially reversed by p21 knockdown. These results suggest that cellular senescence induced by IGFBP-rP1 is mediated at least in part by p21 up-regulation.
--
--
--
--
Human
L
cellular senescence
22,392,074
Gene
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
GADD45G
10912
protein coding
SK-Hep-1,SMMC-7721
--
Hepatocellular carcinoma
Accelerate
Cell morphological analysis//SA--gal activity assay
In agreement with previous observation, we confirmed that the induction of GADD45G expression in Sk-Hep1 cells (Tet-on-GADD45G-Sk-Hep1) and SMMC-7721 cells (Tet-on-GADD45G-SMMC-7721) resulted in characteristic morphological changes common in senescent cells and a dramatic increase in the proportion of SA-¦Â-Gal-staining positive cells.
SIP1
Upregulation
qRT-PCR//Western blot
Surprisingly, we found that the levels of SIP1 mRNA were significantly elevated in the cells upon GADD45G induction.The change in SIP1 mRNA expression was also reflected at the protein levels in Sk-Hep1 and SMMC-7721 cells upon GADD45G induction. In addition, GADD45G-induction of SIP1 expression similarly occurred in H-Ras V12-transformed mouse p53-/- liver progenitor cells (LPC-H-Ras V12 cells).
--
--
--
--
Human
HL
cellular senescence
26,378,039
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
HMGA2
8091
protein coding
WI-38
--
Retinoblastoma
Accelerate
SA--gal activity assay//Western blot//qPCR
We found that the ectopic overexpression of HMGA2 led to elevated SA-¦Â-galactosidase staining and acquisition of the SAHF-like chromatin foci in the nuclei. Meanwhile, the expression levels of the senescence-related proteins, such as p16, p21, p53 and phosphorylated p53, were prominently increased. The transcription level of HDM2 that reduces the stability of p53 protein was decreased together with a slightly up-regulated p14ARF, an inhibitor of HDM2, in WI38 cells expressing HMGA2 . Apparently, these results indicate that HMGA2 can induce the senescence phenotypes in WI38 cells.
E2F
Downregulation
Western blot
Surprisingly, both HMGA2 and Rb were detected in the same protein complex in our model (data not shown), together with the down-regulation of E2F target genes in WI38 cells in response to HMGA2 overexpression.
Rb
--
Western blot//qPCR//RT-PCR//Immunofluorescence
To further test whether Rb is a crucial factor in SAHF formation induced by HMGA2, E7 protein was used as the specific inhibitor of Rb , and the effect of E7 protein on the degradation of Rb was confirmed by Western blotting . Interestingly, we found that E7 protein was able to partly abolish the SAHF formation induced by HMGA2, as revealed by cellular immunofluorescence and decreased percentage of cells with SAHF .Furthermore, as another inhibitor targeted to Rb, SV40 had a similar effect to decrease the HMGA2-induced SAHF formation .
Human
L
cellular senescence
23,969,248
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
0
RRAD
6236
protein coding
NHF
--
Aging
Prevent
Knockdown//SA--Gal activity assay
We found that RRAD knockdown increased the ratio of senescent cells in both H2O2- and IR-induced senescence as determined by SA-¦Â-gal staining assay and BrdU incorporation assay.
p53//NF-¦ÊB
--//--
Knockdown//CHIP-Seq//qRT-PCR
We established p53 knockdown NHFs by a lentiviral based approach for the following functional assay. In OIS, p53 knockdown diminished H-Ras-induced RRAD up-regulation.p53 knockdown also abolished H 2O2-induced RRAD expression.In a published ChIP-Seq data set of IMR-90 cells, we noted that both p53 and NF-¦ÊB bind to the RRAD promoter region in adjacent sites.
--
--
--
--
Human
HL
cellular senescence
30,391,675
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
ING1
3621
protein coding
2BS
--
Aging
Accelerate
Immunofluorescence//SA--gal activity assay//SAHF
The results showed that 2BS cells overexpressing of p33ING1befficiently induced the expression of SA-¦Â-gal activity, flattened senescent cell morphology, and SAHF DNA staining pattern which is indicated by co-localization with H3K9Me3.
p16
Upregulation
qPCR//Western blot//Luciferase reporter assay
qPCR and Western blot results showed that introduction of p33ING1b upregulated p16INK4amRNA and protein levels.Moreover, p16INK4apromoter activity was upregulated by p33ING1b.The results showed that cells treated with p33ING1balone revealed strong SA-¦Â-gal staining and p16 increasing, whereas cells doubly treated with p33ING1b and p16-shRNA reversed the senescence phenotypes. As expected, p16-shRNA-infected cells displayed young phenotypes.
--
--
--
--
Human
L
cellular senescence
21,896,275
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
TWIST
100303576
protein coding
SW48
--
Aging
Prevent
BrdU assay//SA--gal activity assay
Higher percentage of SA-¦Â-gal-positive cells was found in the Sh-TWIST transfectants (filled columns) compared with the controls (open columns) in response to both agents in a dose-dependent manner. This was associated with a decreased cell proliferation rate examined by BrdUrd incorporating assay.These results suggest that suppression of TWIST expression promotes cellular senescence in PrEC.
p14//cH2AX
Downregulation//Upregulation
Western blot
We also found that the p14ARF expression levels were much lower in the TWIST over-expressing cells, either before or after exposure to H2O2 and CP (right panels), compared with the vector control, confirming the negative effect of TWIST on p14ARF. In addition, the p53 and p21 levels were lower in the TWIST over-expressing cells compared with the vector control, especially after drug treatment. Furthermore, we found that the level of cH2AX was higher in the TWIST over-expressing cells either before or after drug treatment compared with the vector control, which was associated with lower levels of phosphorylated Chk1/2 proteins, especially after drug treatment.
Mdm2-p53
--
Western blot
Western blotting analysis showed that the expression levels of p14ARF were much higher in the Sh-TWIST transfectants after exposure to H2O2 or CP in a dose-dependent manner. In contrast, the level of MDM2 was decreased, which was associated with up-regulation of p53 and p21, suggesting that inactivation of TWIST promotes p14ARFMDM2-p53-mediated DNA damage response pathway.
Human
L
cellular senescence
17,690,110
Gene
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
CAV1
857
protein coding
MEF
--
Aging
Accelerate
SA--gal activity assay//Western blot
In contrast, wild type MEFs over-expressing caveolin-1 developed a senescent phenotype 4 days after oxidative stress, as determined by senescent-associated ¦Â-galactosidase staining and p21 upregulation.
SIRT1
Binding
Pull-down assay
To determine whether Sirt1 binds directly to caveolin-1, we performed GST pulldown assays using recombinant Sirt1. We found that human recombinant Sirt1 bound to caveolin 1 (residues 82¨C101)-GST.The incubation with the purified GST-Cav-1 (82¨C101) peptide inhibited Sirt1 activity by- 45% compared to GST alone.
p53
--
Pull-down assay//IP//Western blot
We found that human recombinant Sirt1 bound to caveolin 1. However, Sirt1 strongly interacted with caveolin-1 72 hours after stimulation of WI-38 cells with sublethal doses of hydrogen peroxide that we have previously shown induce premature senescence.In contrast, free radicalinduced acetylation of p53 was significantly inhibited in cells lacking caveolin-1. Interestingly, downregulation of Sirt1 by siRNA enhanced oxidant-induced acetylation of p53 in caveolin-1 null MEFs to levels seen in wild type MEFs.
Human
L
cellular senescence
25,512,378
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
NQO1
1728
protein coding
2BS
--
Aging
Accelerate
BrdU assay//Cell proliferation assay//SA--gal activity assay//qRT-PCR
NQO1 depletion resulted in continuous cell growth compared with corresponding control lentiviral vector (Cont) infected cells . In addition, the morphology changed during the OIS, with senescent cells exhibiting the typical enlarged and flattened shape. Five days after introducing RasG12V, NQO1 depleted 2BS cells showed a different morphology compared with control 2BS cells. Accordingly, we found that 2BS cells with NQO1 depletion reduced with SA-¦Â-gal staining after expressing RasG12V. We observed that knockdown of NQO1 resulted in an increased percentage of 2BS cells with BrdU incorporation after expressing RasG12V. This result suggests that NQO1 depletion delayed the onset of RasG12V-induced cellular senescence.
p53
Binding
Western blot
To test the relevance of NQO1-p53 binding in OIS, p53 was immunoprecipitated in 2BS cells. Western blot analysis verified that NQO1 specifically interacted with p53 in premature senescence.
Nrf2-Keap1
--
Western blot//CHIP//qPCR//Knockdown//Luciferase reporter assay
MAF and KEAP1 were immunoprecipitated from 2BS cells, and western blot analysis verified that during OIS NRF2 was dislocated from KEAP1 and bound with MAF, suggesting that OIS activates NRF2 and results in NRF2-mediated up-regulation of NQO1. Next, we detected whether NRF2 bound to the endogenous NQO1 promoter by chromatin immunoprecipitation (ChIP) assay. Interaction between NRF2 and the NQO1 promoter region was detected by qPCR. As expected, interaction between NRF2 and NQO1 promoter only observed in senescent 2BS. We found that knockdown of NRF2 diminished its interaction with the NQO1 promoter. In addition, we also determined whether NRF2 affected NQO1 promoter activity with ARE by the luciferase reporter assay.
Human
HL
cellular senescence
26,078,718
Gene
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
RSL1D1
26156
protein coding
2BS
--
Aging
Prevent
SA--gal activity assay
No SA-¦Â-gal activity was observed in CSIG transfected 2BS and early-passage cells, whereas CSIG-CT transfected 2BS cells were strongly stained, as were late-passage (senescent) 2BS control cells.
PTEN
Downregulation
Western blot
As expected, CSIG overexpression diminished PTEN abundance.
--
--
--
--
Human
L
cellular senescence
26,686,419
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
S100A13
6284
protein coding
IMR-90
--
Aging
Accelerate
Knockdown//SA--gal activity assay
S100A13 overexpression promotes, whereas S100A13 knockdown delays replicative cellular senescence in IMR9 cells. S100A13 mutant significantly decreased the percentage of SA-¦Â-gal positive staining cells.
IL-1
Upregulation
Flow cytometry//Immunoblotting
FACS analysis of cell surface-bound IL-1¦Á showed that S100A13 overexpression significantly enhanced IL-1¦Á levels compared to empty vector control cells.
--
--
--
--
Human
L
cellular senescence
30,670,674
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
TRIB2
28951
protein coding
LoVo
--
Colorectal cancer
Prevent
Cell morphological analysis//Flow cytometry//Knockdown//SA--gal activity assay
TRIB2 knockdown cells showed higher rates of flat and enlarged senescence-like morphology.Cell cycle distribution of the cells transfected with TRIB2-specific siRNA were determined by flow cytometry.TRIB2 knockdown dramatically increased the G0/G1-phase ratios and reduced the S-phase ratios. The level of SA-¦Â-gal (a biomarker of senescence) was measured, and data showed that the percentage and strength of SA-¦Â-gal-positive cells were significantly increased in TRIB2 knockdown condition.
--
--
--
--
AP4-p21
--
Western blot//RT-PCR//Luciferase reporter assay//IP//CHIP
Silencing TRIB2 dramatically up-regulated p21 expression, inhibited cell growth, induced cell cycle arrest and enhanced cellular senescence. The luciferase assay indicated TRIB2 inhibited p21 promoter activities in an AP4-dependent manner. We then performed CCK8 and SA-¦Â-gal staining analysis to examine the effects of AP4 on TRIB2-mediated functions, and found that silencing AP4 could significantly block TRIB2 overexpression-promoted SW48 and LoVo cells growth and enhance TRIB2 overexpression-inhibited cellular senescence. We carried out co-IP assay using SW48 cells or HEK 293T cells co-transfected with Flag-AP4 and His-TRIB2. AP4 and TRIB2 were found to precipitate with each other.The results showed that overexpression of AP4 suppressed and co-transfection of TRIB2 further suppressed the activities of p21 promoter , which indicated TRIB2 enhanced the function of AP4.
Human
L
cellular senescence
30,541,550
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
LBR
3930
protein coding
TIG-7
--
Aging
Prevent
Knockdown//SA--Gal activity assay
We also found that the cells transfected with the LBR knockdown vector were stained with SA-¦Â-gal, which observation suggested that knockdown of LBR induced cellular senescence in TIG-7 cells.
--
--
--
--
--
--
--
--
Human
L
cellular senescence
30,615,890
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
PTEN
5728
protein coding
MCF-7
--
Aging
Prevent
Knockdown//SA--Gal activity assay
The SA-¦Â-Gal positivity of PTEN KO MEFs was dramatically attenuated in Torin1-treated cells compared to Rapa-treated cells.
--
--
--
--
p53-p21
--
Western blot
PTEN-depleted MCF7 cells displayed prematurely senescent phenotypes in a p53/p21-dependent manner.
Human
L
cellular senescence
30,337,688
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
MDM2
4193
protein coding
HCT116
--
Werner syndrome
Accelerate
SA--Gal activity assay
Ectopic expression of WRN attenuates the senescent phenotype induced by Etoposide,as shown by senescence-associated ¦Â-galactosidase (SA-¦Â-Gal) activity.
WRN
--
IP
WRN and MDM2 association was detected in co-transfected 293T cells by reciprocal immunoprecipitations.
--
--
--
--
Human
L
cellular senescence
30,532,073
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
ASPH
444
protein coding
FOCUS,HuH-7,HepG2
--
Hepatocellular carcinoma
Prevent
Knockdown//SA--Gal activity assay
Knockdown or knockout of ASPH, caused substantial increase in ¦Â-gal staining as a marker for the cells undergoing senescence.
GSK3¦Â
--
Western blot//IP//Immunoblotting
We found a significant increase of phospho-GSK3¦Â(inactivated form) with equal protein expression of GSK3¦Â when comparing the shASPH to the shLuc control.Direct protein-protein interaction between GSK3¦Âand ASPH was demonstrated by co-immunoprecipitation (IP).Immunoblotting with anti-GSK3¦Â revealed that GSK3¦Â bound to ASPH following co-transfection with WT-GSK3¦Âand ASPH.
--
--
--
--
Human
L
cellular senescence
26,683,595
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
RXRA
6256
protein coding
MRC-5
--
Aging
Prevent
Knockdown//SA--Gal activity assay
RXRA knockdown decreased cell proliferation as we observed a drop in the expression of the cell proliferation marker Ki©\67 and a decrease in the number of cells .Importantly, RXRA knockdown also caused an increased SA©\¦Â©\galactosidase activity.
p53
--
Knockdown//Western blot
Using the same approach,we further showed that cellular senescence induced by RXRA knockdown was also dependent on MCU and p53.
ITPR2-MCU
--
Knockdown//qRT-PCR//Western Blot//SA-¦Â-Gal activity assay
To assess whether this senescent phenotype was dependent on ITPR2, we knocked down ITPR2 together with RXRA.ITPR2 knockdown impaired the upregulation of CDKN1A and GDF15 . The proliferation arrest and the increase in SA©\¦Â©\galactosi-dase activity triggered by RXRA knockdown were alsoimpaired. Similar observations were made using either a siITPR2 pool or individual siRNAs targeting ITPR2. Using the same approach, we further showed that cellular senescence induced by RXRA knockdown was also dependent on MCU and p53.
Human
HL
cellular senescence
30,216,632
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
LRRK2
120892
protein coding
SH-SY5Y
--
Parkinson¡¯s disease
Accelerate
Western blot
Up-regulated ¦Â-galactosidase protein levels in G2019S-mediated phosphomimetic p53 and overexpression of p21 or G2019S LRRK2.
--
--
--
--
p53-p21
Upregulation
Western Blot//SA-¦Â-Gal activity assay
We observed a significant increase in ¦Â- gal protein level with the expression of T304/377D p53 (TD-p53) compared to that in the vector and WT-p53 in dSH-SY5Y cells . In addition, the overexpression of p21 and G2019S LRRK2 in dSH-SY5Y cells resulted in significant increases in ¦Â-gal protein expression. We found that ectopic expressions of eitherred fluorescence protein (RFP)-TD-p53 or RFP-p21 elevated GlycoGreen fluorescence by 2¨C3 folds.
Human
L
cellular senescence
30,712,480
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
TSHB
7252
protein coding
--
Adipose
Aging
Prevent
RT-PCR//Telomere length assay
In euthyroid morbidly obese subjects,both SAT and VAT TSHB gene expression was negatively associated with markers of AT senescence (TNF , TP53, BAX and DBC1). Confirming these findings, SAT TSHB mRNA was positively linked to telomere length in a subgroup of consecutive subjects , suggesting decreased senescence with less exposure to thyroid hormones. Furthermore, SAT TSHB mRNA was negatively correlated to specific senescence-associated glucosylceramides.
--
--
--
--
--
--
--
--
Human
L
cellular senescence
30,448,824
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
FXR1
8087
protein coding
UMSCC74A,UMSCC74B
--
Oral cancer
Prevent
Flow cytometry//Knockdown//SA--Gal activity assay
To investigate the underlying mechanism of reduction in number of viable cells following FXR1 KD, we performed cell cycle analysis of the FXR1 KD and control cells by flow cytometry. FXR1 KD induces cell cycle arrest in G /G1 providing evidence that FXR1 might regulate cell division in oral cancer.Silencing of FXR1 in multiple oral cancer cells also promotes senescence by positive SA-¦Â-gal staining.
TERC
--
Luciferase reporter assay
When full-length and truncated TERC (28 base deletion at 5¡¯-end,TERCmut£© are used for luciferase assay,TERC exhibits increased luciferase activity in control cells compared to TERCmut. However, in FXR1 KD cells, TERC exhibits a decreased luciferase activity compared to TERCmut indicating that FXR1 binds to specific G-rich sequences in these RNAs and possibly controls their turnover.Silencing of FXR1 reduces the level of TERC and subsequently interferes with the telomerase activity.
p53-p21
--
RT-PCR//Western Blot
Upregulation ofp53 and p21 protein levels are observed in the absence of FXR1 in WT p53 cell line.RT-PCR¡¢Western Blot£ºoverexpressed FXR1 in HNSCC destabilizes p21 mRNA and reduces its protein expression.concurrent overexpression of p21 and silencing of TERC significantly promoted senescence evidenced by staining of SA-¦Â-gal.
Human
HL
cellular senescence
27,606,879
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
CDKN2A
1029
protein coding
DFC
--
Aging
Accelerate
SA--Gal activity assay//Western blot
P16 gene silencing reduces the number of senescent cells.Only the protein expression of P16 in DFCs increased successively and significantly while the expression of all other examined cell cycle proteins including that of P21 was down-regulated significantly at higher cell passages.
--
--
--
--
--
--
--
--
Human
HL
cellular senescence
28,770,470
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
SIRT6
51548
protein coding
2BS
--
Aging
Prevent
Colony formation?assay//Flow cytometry//RT-PCR//Western blot
Western blot analysis revealed that the expression of SIRT6 was high in young cells, but decreased significantly during cellular senescence. Consistently, RT-PCR analysis revealed that mRNA levels of SIRT6 decreased in senescent cells .Another hallmarker of senescent cells is the ability of colony formation. We observed that 2BS cells overexpressing SIRT6 formed more colonies than control cells. However, SIRT6 shRNA-infected cells showed less colonies compared to control cells .It was obvious that SIRT6 shRNA-infected 2BS cells entered G1 cell cycle arrest.
p27
--
Western blot//RT-PCR//SA-¦Â-gal activity assay//Co-IP//Pull-down assay
In addition,SIRT6 silencing did not alter the protein levels of p16, p21, p53 and PTEN, but markedly increased p27 protein levels. Moreover, the real-time PCR analysis demonstrated similar p27 mRNA levels in both SIRT6-overexpressing and knockdown cells, suggesting that SIRT6 might decrease the p27 protein levels but not the mRNA levels.2BS cells co-expressing pLPC,pBabe-p27 exhibited G1 arrest and higher SA-¦Â-gal ctivity. Concurrently, the senescent markers of SIRT6-p27 appeared to be comparable with that of pLPC-pBabe control cells.Thus,the decrease of p27 mediated by SIRT6 is required for the restriction of cellular senescence. Colocalization experiments showed that both SIRT6 and p27 mainly colocalized in the nucleus. To further confirm the interaction of p27 and SIRT6, we performed a GST pull down assay using in vitro transcribed and translated p27 or SIRT6 and purified GST-SIRT6 or GST-p27.SIRT6 displayed a strong association with p27 in vitro.
--
--
--
--
Human
HL
cellular senescence
27,794,562
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
TIMELESS
8914
protein coding
2BS
--
Aging
Prevent
Western blot//qRT-PCR
The expression of circadian protein TIMELESS was down-regulated during the onset of OIS, while other members of circa-dian clock showed no significant changes in their expression.The downregulation of TIMELESS was also confirmed inreplicative senescence and H2O2 induced senescence,suggesting TIMELESS downregulation might be a commonevent happened during cellular senescence.
E2F1
--
Knockdown//Luciferase reporter assay//CHIP//qRT-PCR//Western blot
Chromatin immunoprecipitation (ChIP) assay was utilized to confirm the binding of E2F1 to the endogenous TIMELESS promoter.Interaction between E2F1 and TIMELESS promoter region was detected by qRT-PCR.As expected, interaction between E2F1 and TIMELESS promoter was observed in young 2BS cells.Furthermore, the mutation in E2F1 binding site of TIMELESS promoter region significantly reduced the luciferase activity in young 2BS cells.Knockdown of E2F1 by a sh-E2F1 lentiviral vector significantly down-regulated TIMELESS mRNA level in young 2BS cells.All above data support that E2F1 could bind to TIMELESS promoter and regulated the expression in young 2BS cells.
--
--
--
--
Human
L
cellular senescence
30,100,061
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
1
0
0
TSLP
85480
protein coding
BEAS-2B
--
Asthma
Accelerate
SA--gal activity assay//Western blot
Specifically,senescent cells increased >15 fold upon treatment with 1.5ng/ml TSLP.There was increased expression of SA-¦Â-gal and decreased Ki67 expression in BEAS-2B cells upon TSLP treatment.
--
--
--
--
--
--
--
--
Human
L
cellular senescence
24,167,583
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
UHRF1
29128
protein coding
2BS,IMR-90
--
Aging
Prevent
CCK-8 assay//EdU assay//Knockdown//SA--gal activity assay
Cell proliferation rates decreased in UHRF1 shRNA-infected cells. Growth curves of UHRF1 shRNA-infected 2BS cells or IMR9 cells were determined by CCK8 assay.The percentage of cells incorporating EdU also decreased in UHRF1 shRNA-infected 2BS cells or IMR9 cells. SA-¦Â-gal activity staining increased in UHRF1 shRNA-infected cells. Representative microscopic view of 2BS cells or IMR9 cells infected with the indicated vectors with SA-¦Â-gal activity staining.
PIM1
--
IP
In reciprocal immunoprecipitations, PIM1 was observed presentingin UHRF1 immunoprecipitates.
--
--
--
--
Human
HL
cellular senescence
28,394,343
Gene
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
WNT7A
7476
protein coding
A549
Lung
Lung cancer
Accelerate
CCK-8 assay//SA--gal activity assay
Histological analysis of the lung sections of the wild-type and Wnt7a-null mice showed no difference in basal staining for SA-¦Â-gal activity. However, a large number of SA-¦Â-gal-positive cells, predominantly in the tumor area, were observed in lung sections of the wild-type mice after urethane treatment, whereas Wnt7a-null mice,on the contrary, showed reduced or no SA-¦Â-gal staining.
--
--
--
--
SKP2-p27-pRb
--
Western Blot
Consistent with the changesin SKP2 and p27kip1 expression, the levels of phosphorylated(p-Rb-S780) retinoblastoma proteins in Wnt7a-null mice were dramatically increased as well . Cyclin D1, which is critical for Ser780 phosphorylation of Rb ,was also upregulated in Wnt7a-null mice, along with CDK2 andCDK6, components of the CDK/cyclin complex . Similarresults were obtained when using the lung lysates of wild-typeand Wnt7a-null in FVB/NJ mice.
Human
HL
cellular senescence
25,728,679
Gene
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SPHK1
8877
protein coding
Adipose stromal cell
--
Aging
Prevent
BrdU assay//SA--gal activity assay
A SPHK1 inhibitor, significantly reduced the incorporation of BrdU into cellular DNA compared to control cells,indicative of the lowered proliferative ability.As with high-passage cells,SPHK1-depleted or SKI-treated hAD-SCs underwent accelerated cellular senescence as evidenced by higher SA-¦Â-gal activity.
S1P
--
SA-¦Â-gal activity assay//BrdU assay
To test this hypothesis, we investigated whether SPHK1 knockdown-induced cellular senescence could be attenuated by inhibition of ceramide synthesis or exogenous supple- mentation with S1P during cell culture. BrdU incorporation assays showed that the proliferation impeded by shRNA- mediated silencing of SPHK1 could not be recovered by single treatment with S1P or fumonisin B1 (FB1), a ceramide synthesis inhibitor, and even by co-treatment with both , indicating the irreversibility of cellular senescence. In contrast, the elevated activity of SA-¦Â-gal in SPHK1-silenced cells was reduced by simultaneous co-treatment with S1P and FB1, but not by single treatment with either one alone, suggesting that cellular senescence accelerated by SPHK1 depletion may result from increase in ceramide levels with concurrent decrease in S1P levels.
--
--
--
--
Human
L
cellular senescence
30,885,289
Gene
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
IGF1
3479
protein coding
VSMC
--
Aging
Accelerate
SA--gal activity assay
We observed a strong induction of SA-¦Â-gal activity following IGF-I stimulation in the confluent cells
--
--
--
--
ROS-p53
--
Immunoblotting//SA-¦Â-gal activity assay
We examined the involvement of ROS in the induction of cellular senescence by IGF-I.Treatment with an ROS scavenger, N-ace-tylcysteine (NAC), significantly suppressed the IGF-I-induced increase in SA-¦Â-gal activity. Furthermore, NAC treatment also suppressed the induction of cH2AX, p53, and p21 proteins, indicating that ROS are involved in IGF-I-induced cellular senescence. Treatment with an alternative ROS scavenger,Trion, also produced similar results (data not shown). In addition,we used p53-/- MEFs to clarify the role of p53 in IGF-I-induced cellular senescence; in the absence of p53, IGF-I-induced SA-¦Â-gal activation and p21 augmentation were inhibited.
Human
L
cellular senescence
22,877,754
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SETD8
387893
protein coding
PC-3
--
Aging
Prevent
Flow cytometry//Knockdown//SA--gal activity assay
In PC3 cells harboring SETD8-specific siRNAs,we detected a greater extent of ¦Â-gal-positive staining,cell proliferation arrest,nuclear area enlargement,G2/M arrest .Consistent with its known pro-proliferation role,overexpression of SETD8 in the absence of dox treatment elevated the rate of cell growth.In dox-treated cultures undergoing senescence,introduction of ectopic SETD8 lessened cellular senescence induction to a large extent, as evidenced by the reversal of ¦Â-gal-positive staining,cell proliferation arrest,and upregulation of senescence markers p21,IL-6,andIL-8.
PPARc//p21
--//Downregulation
qRT-PCR//SA-¦Â-gal activity assay//CHIP//Flow cytometry
In support of its role as an upstream regulator, ectopic overexpression of PPARc led to an increase in the expression of SETD8 and H4K20me1, and conversely a decline in the p21 mRNA levels.To further demonstrate the role of PPARc in controlling senescence, we showed that overexpression of PPARc alleviated the extent of dox-induced cellular senescence, in terms of ¦Â-gal-positive staining , cell proliferation arrest, and SASP marker induction. Via ChIP-qPCR assay on the PPARc-overexpressing cells, we consequently found that the chromatin binding of PPARc increases on SETD8 promoter upon ectopic expression.Although RNAi-mediated abrogation SETD8 in cycling cell expectedly induced cellular senescence, based on the proportions of ¦Â-gal-positive cells and G2/M cells, simultaneous depletion of p21 notably suppressed these phenotypes. Further in line with this possible functional antagonism, concurrent depletion of p21 and SETD8 also lessened the progressive cell proliferation stall and nuclei enlargement, as compared with cells with down-regulated SETD8 only.
--
--
--
--
Human
HL
cellular senescence
28,514,051
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
YPEL3
83719
protein coding
MCF-7,U2OS
--
Aging
Accelerate
Colony formation assay//SA--gal activity assay
Using a colony formation assay,both cell lines showed considerably fewer colonies when expressing YPEL3 compared with cells not induced to express YPEL3. Growth suppression was also observed after shorter time periods of YPEL3 induction. Due to difficulties in the long-term growth of YPEL3 expressing cells, the inability to detect apoptosis, and observed morphologic changes, we examined the possibility that induction of YPEL3 would trigger cellular senescence.Two hallmarks of cellular senescence in human cells are the detection of increased acidic ¦Â-galactosidase activity and the appearance of foci within the nuclei of senescent cells . A clear increase (¡«38%) in cellular senescence was observed in U2OS/YPEL3-TetR cells exposed to tetracycline.
p53
--
Dual-Luciferase reporter assay//Immunoblotting
The level of YPEL3 mRNA induction was significantly reduced in doxorubicintreated Hct116 cells lacking p53 .Cotransfection of the YPEL3-luciferase reporter with wild-type p53 in either Hct116?/?p53 or H1299 cells led to an increase in YPEL3 promoter activity .Having established that the YPEL3 promoter could be activated by p53 when cloned into a plasmid reporter construct, we next set out to test whether p53 protein associated with the YPEL3 promoter in vivo. p53 chromatin immunoprecipitation assays were performed with Hct116 cells undamaged (non-treated) or damaged with doxorubicin. As expected, p53 was shown to bindin vivoto the YPEL3 promoter in DNA-damaged Hct116 cells.
--
--
--
--
Human
HL
cellular senescence
20,388,804
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
IFNG
3458
protein coding
HUVEC
--
Aging
Accelerate
Flow cytometry//MTT assay//SA--gal activity assay
Cell proliferation decreased slightly with IFN-¦Ã treatment in time- and dose-dependent manners. A decrease in cell proliferation by IFN-¦Ã treatment for 3 days was statistically significant (p < 0.05). The induction of cellular senescence by prolonged treatment with IFN-¦Ã was confirmed by an increase in SA-¦Â-gal-positive cells in the treated cells compared to the control cells . IFN-¦Ã treatment increased the G0/G1 cell population and decreased the S and G2/M cell population, suggesting that IFN-¦Ãinhibited cell proliferation through G0/G1 arrest in the cell cycle.
p53
--
Knockdown//SA-¦Â-gal activity assay//Western blot
Prolonged stimulation of IFN-¦Ã in the p16-knockdown (p16sh) cells increased SA-¦Â-gal activity staining to a level similar to that in control cells. In contrast, no increase in SA-¦Â-gal staining was observed in the p53-knockdown (p53sh) cells following prolonged stimulation with IFN-¦Ã. We reproducibly noticed an increase in the number of SA-¦Â-gal-positive cells in p16-/-MEFs, but not in IFN-¦Ã-treated p53-/-MEFs, after prolonged stimulation with IFN-¦Ã. Therefore,these results suggest that IFN-¦Ã-induced cellular senescence is mediated through a p53-dependent pathway.To confirm that p53 activation by IFN-¦Ã treatment was mediated through DNA damage signaling,the ATM level was down-regulated using siRNAs against ATM,followed by treatment with IFN-¦Ã for 6 days. Increases in p53 and phospho-p53 levels induced by IFN-¦Ã treatment were repressed by knockdown of ATM.
--
--
--
--
Human
L
cellular senescence
19,071,156
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
HDAC4
9759
protein coding
2BS
--
Aging
Prevent
Flow cytometry//Knockdown//MTT assay//SA--gal activity assay//Western blot//qRT-PCR
The overexpression and knockdown of HDAC4 were confirmed by western blot. Overexpression of HDAC4 resulted in only scattered senescence-associated ¦Â-galactosidase (SA-¦Â-gal) activity, which is a biomarker for senescent cells. The formation of senescence-associated heterochromatin foci (SAHF), which is another hallmark of senescent cells, was not observed when HDAC4 was overexpressed. Continuous cell growth and a decrease in the proportion of 2BS cells in the G0/G1 phases were evident in HDAC4 overexpressing cells compared with corresponding empty control vector-infected cells. In contrast, HDAC4 knockdown induced more robust senescence phenotypes, which displayed an elevated SA-¦Â-gal activity, prominent heterochromatin foci indistinguishable from those in senescent 2BS cells, pronounced cell growth arrest, and accelerated G1 cell cycle arrest compared with corresponding empty control vector-infected cells.
SIRT1
--
Knockdown//RT-PCR//Western blot//IP
We first analysed the expression patterns of SIRT1 using western blot and RT-PCR subjected to such perturbations.The protein levels of SIRT1 were markedly enhanced in HDAC4-transfected HeLa cells compared with the vector-transfected cells. In addition, we silenced HDAC4 expression in HeLa cells. Not unexpectedly, there was a marked decrease in the SIRT1 protein level in these HDAC4 silenced cells.Moreover,the RT-PCR analysis demonstrated no alteration at the SIRT1 mRNA levels in either HDAC4-overexpressing or knockdown cells, indicating that HDAC4 might normally function to increase the SIRT1 protein levels, but not at the mRNA level.To gain further insight into the interplay between HDAC4 and SIRT1, cellular interactions between HDAC4 and SIRT1 were confirmed using immunoprecipitation (IP) assays.
--
--
--
--
Human
L
cellular senescence
26,414,199
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
1
0
0
ACLY
47
protein coding
HDF
--
Aging
Prevent
Cell morphological analysis//Cell proliferation assay//Knockdown//SA--gal activity assay
ACLY knockdown cells showed apparent growth retardation and a typical senescent morphology (flat and enlarged in size). The proliferation assay and senescence-associated -¦Â-galacto-sidase staining showed that knockdown of ACLY in HDF cells significantly reduced their proliferation rate. A large proportion of ACLY knockdown cells were positive for senescence-associated-¦Â-galactosi-dase staining.
--
--
--
--
p53-AMPK
--
Knockdown//SA-¦Â-gal activity assay//qRT-PCR//DAPI staining//Immunofluorescence//Pull-down assay
Initially, we silenced p53 in ACLY knockdown HDF cells, and found that additional knockdown of p53 completely abrogated ACLY silencing-induced cellular senescence. we observed an increased p53 protein level in ACLY knockdown HDF cells by confocalmicroscopy and increased mRNA levels of p53 downstream target genes by real-time quantitative PCR.The direct interaction of ACLY with AMPK a2 was confirmed by an in vitro glutathione S-transferase(GST) pulldown assay . Immunofluorescent staining of over-expressed AMPK and endogeneous ACLY showed that about 26% and 37% of the signal co-localized in HDF and HCT116 cells, respectively .An in vitro kinase assay using immunoprecipitated AMPK a2 showed an apparent reduction of AMPK activity by ACLY.
Human
L
cellular senescence
25,367,309
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
PIR
8544
protein coding
WM266-4,IGR-37
--
Aging
Prevent
Cell morphological analysis//Colony formation assay//Knockdown//SA--gal activity assay//Western blot
The growth rate was significantly reduced in both mela-noma cell lines stably expressing shPIR constructs,compared with that of cells bearing the empty pSICO-R. A colony formation assay was also performed to measure the growth rate at low density. The number of colonies formed by shPIR cells was significantly reduced in both cell lines.The shPIR-transduced cell lines exhibited changes in size and morphology compatible with cellular senescence (flattened and enlarged phenotype). We therefore performed a senescence-associated ¦Â galactosidase(SA-¦Â-galactosidase) assay and found that PIR knockdown in WM266-4 cells resulted in an increase from 2.1% positivity in control cells to 41.3%, 16.6%, and 37.1% in shPIR#7, #16, and #19 transduced cells, respectively.
--
--
--
--
--
--
--
--
Human
L
cellular senescence
21,514,450
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
CUL4B
8450
protein coding
NHF,U2OS
--
Aging
Prevent
BrdU assay//Knockdown//SA--gal activity assay//Western blot
At day 5 post exposure to 1 Gy of ionizing radiation (IR), more than 9 % of normal human fibroblasts (NHFs) became senescent, as determined by assays of senescence-associated ¦Â¨Cgalactosidase (SA- ¦Â-gal) and BrdU incorporation. At this time point, there was a remarkable reduction in CUL4B at protein level. CUL4B was efficiently knocked down by RNA interference (RNAi). We observed that the percentage of senescent cells, as determined by SA- ¦Â-gal staining and BrdU incorporation, was significantly higher in shCUL4B cells than in shNeg cells after H2O2 treatment.
--
--
--
--
p53-ROS
Downregulation
Knockdown//Flow cytometry//qRT-PCR//BrdU assay//SA-¦Â-gal activity assay//Western blot
We used nutlin-3, which inhibits MDM2-mediated degradation of p53 and thus stabilizes p53, to activate p53 in NHFs and measured the level of ROS. Two days after nutlin-3 treatment the intracellular ROS level was higher in NHF-shCUL4B cells than in NHF-shNeg cells . Importantly, nutlin-3 failed to elevate the ROS level in CUL4B and p53 double knockdown cells (NHF-shCUL4B&shp53), while H2O2 treatment, as a positive control, caused an increase in the level of ROS in those cells. These results suggest that persistent activation of p53 alone may lead to an elevation in ROS level.We observed that while the percentage of senescent cells was higher in NHF-shCUL4B cells than in NHF-shNeg cells when treated with H2O2, the enhancement in senescence caused by CUL4B depletion was abolished in CUL4B and p53 double knockdown cells (NHF-shCUL4B & shp53), indicating that the enhancement in stress-induced senescence in CUL4B knockdown cells is dependent on p53. p53 activation, p53 transactivating activity and ROS production in response to H 2O2 treatment were significantly attenuated in PLOC-CUL4B cells .
Human
L
cellular senescence
25,464,270
Gene
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
IGFBP5
3488
protein coding
HUVEC
--
Aging
Accelerate
Flow cytometry//MTT assay//RT-PCR//SA--gal activity assay//Western blot
The levels of IGFBP-5 mRNA and protein in old cells were down-regulated by gene silencing using IGFBP-5 micro-RNA lentivirus. Transduction with IGFBP-5 micro-RNA lentivirus caused 65% decrease in IGFBP-5 levels. Repression of IGFBP-5 levels in old cells caused morphological changes similar to young cells and a decrease in SA-¦Â-gal activity. Treatment of young cells with rhIGFBP-5 decreased cell proliferation both time- and dose-dependently. Furthermore, prolonged treatment with rhIGFBP-5 increased SA-¦Â-gal staining and caused a characteristically enlarged and flattened morphology.To confirm that rhIGFBP-5¨Ctreated cells entered senescence-related cell cycle arrest, we analyzed DNA content by flow cytometry with PI staining. Most cells stimulated with rhIGFBP-5 for 2 d were arrested in G1 phase, which is one of the typical phenotypes in cellular senescence.
p53
--
Knockdown//Western blot//MTT assay
To further confirm that the p53 activation by IGFBP-5 might be mediated through DNA damage signaling, ATM level was down-regulated using siRNAs against ATM and the effects of IGFBP-5 overexpression were measured. Increases in p53 and phospho-p53 levels induced by IGFBP-5 up-regulation were repressed by knockdown of ATM. Furthermore, inhibition of cell proliferation induced by IGFBP-5 up-regulation was rescued by knockdown of ATM.These results suggested that IGFBP-5¨Cinduced cellular senescence is mediated by posttranslational modification of p53 such as phosphorylation and acetylation through DNA damage signaling.
--
--
--
--
Human
HL
cellular senescence
17,804,819
Gene
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
End of preview. Expand in Data Studio

Aging ReG Dataset

Dataset Overview

Aging ReG is a manually curated database of aging factors focusing on regulatory relationships during aging with experimental evidence in humans. This dataset provides valuable insights into the molecular mechanisms of aging and the regulatory networks involved.

Key Details

  • Organism: Human
  • Description: Manually curated database of aging factors, focusing on regulatory relationships during aging with experimental evidence in human.
  • Source Lab: Tian lab
  • Reference: Piao et al., 2023
  • Release Date: 2023-10-24

Data Cleaning and Processing

The raw dataset was downloaded and processed to clean and organize the regulatory relationships. Data cleaning included removing duplicates, standardizing gene identifiers, and validating experimental evidence tags. The data was converted and saved in the .h5ad format to facilitate single-cell analysis workflows.

Source

The raw data was downloaded from the Aging-ReG database:
https://bio.liclab.net/Aging-ReG/download.php

This dataset contains regulatory relationships during aging with experimental evidence curated by the Tian lab. For more details, please visit the original site.

Usage

This dataset can be used for research in aging biology, bioinformatics, and related fields, especially for studying gene regulatory networks in the aging process.

Citation

If you use this dataset, please cite:
Piao et al., 2023. Raw Data : https://bio.liclab.net/Aging-ReG/download.php


Created and curated by Venkatachalam, Pooja and Albert
Date: 2025-06-14

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