Gene expression profiling of dynamic paracrine senescence in human fibroblasts
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ABSTRACT:
PROVIDER: PRJNA580255 | ENA |
REPOSITORIES: ENA
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Project description:Cellular senescence can be transmitted to neighbouring cells in a paracrine manner through different mechanisms, including soluble factors released by senescent cells. To understand the dynamic regulation of paracrine senescence, here we investigated gene expression profiles in normal human fibroblasts (IMR90) exposed to conditioned medium generated by an inducible model of fibroblast Oncogene-Induced Senescence (IMR90-ER:RAS) at different time points after induction of senescence.
2022-04-05 | GSE139563 | GEO
Project description:Hepatocytes undergo senescence during development and progression of NAFLD. In order to better understand the phenotype of these senescent cells we generated an in vitro model of stress-induced senescence in IHH cells. To further understand the dynamic regulation of paracrine senescence, IHH cells were exposed to conditioned medium generated by an inducible model of stress-induced senescence.
2024-09-01 | GSE210140 | GEO
Project description:Senescence can be transmitted in a paracrine way from cells undergoing Oncogene Induced Senescence (OIS) to naM-CM-/ve normal cells. We define this phenomenon as M-bM-^@M-^\paracrine senescenceM-bM-^@M-^] We used microarrays to compare the trancriptome of cells undergoing paracrine senescence to the transcriptome of cells suffering OIS to unveil the common signatures defining both events and the similarities between them IMR90 cells were co-cultured with IMR90 ER:RAS undergoing OIS or IMR90-Vector control cells using 0.2 M-NM-<m pore transwell (anopore) to allow communication of soluble factors but physical separation of the two cell populations. The total mRNA of IMR90, IMR90 ER:RAS or IMR90 cells cultured in Transwells together with IMR90 vector or IMR90 ER:RAS cells during 7 days in the presence of 200 nM 4OHT and 0.5 % FBS was extracted and hybridized on Affymetrix microarrays to compare paracrine senescence to OIS.
2013-06-13 | E-GEOD-41318 | biostudies-arrayexpress
Project description:Senescence can be transmitted in a paracrine way from cells undergoing Oncogene Induced Senescence (OIS) to naïve normal cells. We define this phenomenon as “paracrine senescence” We used microarrays to compare the trancriptome of cells undergoing paracrine senescence to the transcriptome of cells suffering OIS to unveil the common signatures defining both events and the similarities between them
2013-06-13 | GSE41318 | GEO
Project description:Senescence, the irreversible cell cycle arrest of damaged cells, is accompanied by a deleterious pro-inflammatory senescence-associated secretory phenotype (SASP). Senescence and the SASP are major factors in aging, cancer, and degenerative diseases, and interfere with the expansion of adult cells in vitro, yet little is known about how to counteract their induction and deleterious effects. Paracrine signals are increasingly recognized as important senescence triggers and understanding their regulation and mode of action may provide novel opportunities to reduce senescence-induced inflammation and improve cell-based therapies. Here, we show that the signalling protein WNT3A counteracts senescence in cultured human adult multipotent stromal cells (MSCs) by limiting paracrine senescence. We find that entry into senescence in a small subpopulation of MSCs triggers a secretome that causes a feed-forward signalling cascade that with increasing speed induces healthy cells into senescence. WNT signals interrupt this cascade by repressing cytokines that mediate this induction of senescence. Inhibition of those mediators by interference with NF-kB or interleukin 6 signalling reduced paracrine senescence in absence of WNT3A and promoted the expansion of MSCs. Our work reveals how WNT signals can antagonize senescence and has relevance not only for expansion of adult cells but can also provide new insights into senescence-associated inflammatory and degenerative diseases. // The RNAseq data in particular focusses on the transcriptome changes in MSCs occuring in vitro culture over four passages in presence or absence of growth factors WNT3A and FGF2.
2021-11-24 | GSE152112 | GEO
Project description:Gene expression profiling of stress-induced senescence and paracrine senecence in human hepatocytes
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Project description:Dynamic enhancer interactome promotes senescence and aging
| PRJNA1066353 | ENA
Project description:Telomere shortening in populations of human mammary epithelial cells (HMECs) that survive early replicative arrest (M0) by the inactivation of p16INK4A during cell culture on plastic dishes leads to a state of permanent replicative arrest termed senescence. While culture of HMECs on feeder layers abrogates M0 and p16INK4A inactivation, progressive telomere attrition in these cells also eventually results in permanent replicative arrest. Expression of telomerase prevents both senescence on plastic (S-P) and senescence on feeder layers (S-FL) in HMECs, as it does also in cultured primary human fibroblasts. We report here that the gene expression profiles of senescence in HMECs of the same lineage maintained under different culture conditions showed surprisingly little commonality. Moreover, neither of these senescence-associated profiles in HMECs resembles the profile for senescence in human fibroblasts. These results indicate that senescence-associated alterations in gene expression resulting from telomere attrition are affected by culture conditions as well as by cell origins, and argue that replicative senescence at the molecular level is a diverse rather than unique cellular process.
2005-11-01 | E-SMDB-2210 | biostudies-arrayexpress
Project description:This SuperSeries is composed of the following subset Series: GSE3730: Replicative senescence in human fibroblasts GSE3731: Replicative senescence in post-selection HMECs Abstract: Replicative senescence is the state of irreversible proliferative arrest that occurs as a concomitant of progressive telomere shortening. By using cDNA microarrays and the gabriel system of computer programs to apply domain-specific and procedural knowledge for data analysis, we investigated global changes in gene transcription occurring during replicative senescence in human fibroblasts and mammary epithelial cells (HMECs). Here we report the identification of transcriptional "fingerprints" unique to senescence, the finding that gene expression perturbations during senescence differ greatly in fibroblasts and HMECs, and the discovery that despite the disparate nature of the chromosomal loci affected by senescence in fibroblasts and HMECs, the up-regulated loci in both types of cells show physical clustering. This clustering, which contrasts with the random distribution of genes down-regulated during senescence or up-regulated during reversible proliferative arrest (i.e., quiescence), supports the view that replicative senescence is associated with alteration of chromatin structure. Refer to individual Series
2006-03-06 | E-GEOD-4352 | biostudies-arrayexpress
Project description:<p>Cellular senescence affects many physiological and pathological processes and is characterized by durable cell cycle arrest, an inflammatory secretory phenotype and metabolic reprogramming. Here, by using dynamic transcriptome and metabolome profiling in human fibroblasts with different subtypes of senescence, we show that a homeostatic switch which results in glycerol-3-phosphate (G3P) and phosphoethanolamine (PEtn) accumulation links lipid metabolism to the senescence gene expression program. Mechanistically, p53-dependent glycerol kinase (GK) activation and post-translational inactivation of Phosphate Cytidylyltransferase 2-Ethanolamine (PCYT2) regulate this metabolic switch, which promotes triglyceride accumulation in lipid droplets and induces the senescence gene expression program. Conversely, G3P phosphatase (G3PP) and Ethanolamine-Phosphate Phospho-Lyase (ETNPPL)-based scavenging of G3P and PEtn acts in a senomorphic way by reducing G3P and PEtn accumulation. Collectively, our study ties G3P and PEtn accumulation to controlling lipid droplet biogenesis and phospholipid flux in senescent cells, providing a potential therapeutic avenue for targeting senescence and related pathophysiology.</p>
2024-01-09 | MTBLS7118 | MetaboLights