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P16-dependent upregulation of PD-L1 impairs immunosurveillance of senescent cells [RNA-seq: Lung Epithelial Cells]

ABSTRACT: p16-dependent upregulation of PD-L1 impairs immunosurveillance of senescent cells [RNA-seq: Lung Epithelial Cells]

PROVIDER: PRJNA934897 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR23456084.fastq.gz	Fastqsanger.gz
	SRR23456085.fastq.gz	Fastqsanger.gz
	SRR23456086.fastq.gz	Fastqsanger.gz
	SRR23456087.fastq.gz	Fastqsanger.gz
	SRR23456088.fastq.gz	Fastqsanger.gz

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p16-dependent upregulation of PD-L1 impairs immunosurveillance of senescent cells

Project description:p16-dependent upregulation of PD-L1 impairs immunosurveillance of senescent cells

| PRJNA934895 | ENA

p16-dependent upregulation of PD-L1 impairs immunosurveillance of senescent cells [RNA-seq: Lung Epithelial Cells]

Project description:The accumulation of senescent cells promotes aging, but a molecular mechanism that senescent cells use to evade immune clearance and accumulate remains to be elucidated. Here, we report that p16-positive senescent cells upregulate the immune checkpoint protein programmed death-ligand 1 (PD-L1) to accumulate in aging and chronic inflammation. p16-mediated inhibition of CDK4/6 promotes PD-L1 stability in senescent cells via the downregulation of ubiquitin-dependent degradation. p16 expression in infiltrating macrophages induces an immunosuppressive environment that can contribute to an increased burden of senescent cells. Treatment with immunostimulatory anti-PD-L1 antibody enhances the cytotoxic T cell activity and leads to the elimination of p16, PD-L1-positive cells. Our study uncovers a molecular mechanism of p16-dependent regulation of PD-L1 protein stability in senescent cells and reveals the potential of PD-L1 as a target for treating senescence-mediated age-associated diseases.

2024-02-14 | GSE225286 | GEO

p16-dependent upregulation of PD-L1 impairs immunosurveillance of senescent cells [RNA-seq: Lung Alveolar Macrophages]

2024-02-14 | GSE225285 | GEO

p16-dependent upregulation of PD-L1 impairs immunosurveillance of senescent cells [RNA-seq: Lung Alveolar Macrophages]

Project description:p16-dependent upregulation of PD-L1 impairs immunosurveillance of senescent cells [RNA-seq: Lung Alveolar Macrophages]

| PRJNA934896 | ENA

p16-dependent upregulation of PD-L1 impairs immunosurveillance of senescent cells

Project description:This SuperSeries is composed of the SubSeries listed below.

2024-02-14 | GSE225287 | GEO

p16-dependent increase of PD-L1 stability regulates immunosurveillance of senescent cells.

Project description:The accumulation of senescent cells promotes ageing and age-related diseases, but molecular mechanisms that senescent cells use to evade immune clearance and accumulate in tissues remain to be elucidated. Here we report that p16-positive senescent cells upregulate the immune checkpoint protein programmed death-ligand 1 (PD-L1) to accumulate in ageing and chronic inflammation. We show that p16-mediated inhibition of cell cycle kinases CDK4/6 induces PD-L1 stability in senescent cells via downregulation of its ubiquitin-dependent degradation. p16-expressing senescent alveolar macrophages elevate PD-L1 to promote an immunosuppressive environment that can contribute to an increased burden of senescent cells. Treatment with activating anti-PD-L1 antibodies engaging Fcγ receptors on effector cells leads to the elimination of PD-L1 and p16-positive cells. Our study uncovers a molecular mechanism of p16-dependent regulation of PD-L1 protein stability in senescent cells and reveals the potential of targeting PD-L1 to improve immunosurveillance of senescent cells and ameliorate senescence-associated inflammation.

| S-EPMC11321988 | biostudies-literature

Gene expression profile of p16-induced senescence in normal human diploid fibroblasts.

Project description:Transcriptional profiling of p16-induced senescent human diploid fibroblasts compared with proliferating cells. TIG-3 ER-p16 cells (primary normal human diploid fibroblasts expressing a 4-hydroxytamoxifen(4-OHT) regulatable form of human p16) were cultured for 7 days with or without 4-OHT. Total RNA was isolated using TRIzol reagent and were analyzed using the hum

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Cellular senescence in malignant cells promotes tumorigenesis in mouse and patient glioblastoma [p16]

Project description:The goal of this study is to identify the senescent cells expressing high level of p16Ink4a (p16Ink4a Hi) in GBMs and characterize their action on the tumor microenvironment at an early timepoint. We introduced the p16-3MR transgene in the GBM mouse model to selectively delete p16Ink4a Hi senescent cells upon ganciclovir (GCV) injection. We compared p16-3MR+GCV to WT+GCV control GBMs that were harvested 7 days after the last GCV injection.

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Single cell analysis of senescent cells of old p16-FDR mice (heart)

Project description:Single cell analysis of senescent cells of old p16-FDR mice (heart)

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Single cell analysis of senescent cells of old p16-FDR mice (kidney)

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