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Autophagy mediates the mitotic senescence transition

ABSTRACT: ER:RAS-G12V expressing IMR90 cells were given 100nM 4-OHT and assessed for transcriptional profiling at various time points.

ORGANISM(S): Homo sapiens

PROVIDER: GSE59522 | GEO | 2014/07/31

SECONDARY ACCESSION(S): PRJNA255498

REPOSITORIES: GEO

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Autophagy mediates the mitotic senescence transition

Project description:ER:RAS-G12V expressing IMR90 cells were given 100nM 4-OHT and assessed for transcriptional profiling at various time points. IMR90 cells expressing a 4-hydroxytamoxifen (4-OHT) inducible estrogen receptor (ER)-coupled RAS-G12V (ER:RAS-G12V) were given 100nM 4-OHT for these eight time points (0, 2, 8, 24hrs, 2, 4, 6 and 8days) then analysed for transcriptional profiling using the illumina expression array platform (human-6 v2 Expression BeadChips). There were three biological replicates (batch A, B and D) for each of the time points.

2014-07-31 | E-GEOD-59522 | biostudies-arrayexpress

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Project description:ER:RAS-G12V expressing IMR90 cells were transduced with N1ICD-containing or control vectors before treatment with either 100nM 4-OHT or vehicle for 6 days leading to Notch-induced senescence (NIS), RAS-induced senescence (RIS) or combined Notch and Ras-induced senescence (RNIS).

2016-06-22 | GSE72404 | GEO

NOTCH1 mediates a reciprocal switch between two distinct secretomes during senescence [CSM]

Project description:ER:RAS-G12V expressing IMR90 cells were treated with either 100nM 4-OHT for 6 days or 100uM Etoposide for 2 days, followed by further culture for 5 days, leading to RAS-induced senescence (RIS) and DNA-damage induced senescence (DDIS) respectively.

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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.

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