Gene Set: CHICAS_RB1_TARGETS_LOW_SERUM

Standard name CHICAS_RB1_TARGETS_LOW_SERUM
Systematic name M2126
Brief description Genes up-regulated in IMR90 cells (fibroblast) grown under low serum conditions and after knockdown of RB1 [GeneID=5925] by RNAi.
Full description or abstract The RB protein family (RB, p107, and p130) has overlapping and compensatory functions in cell-cycle control. However, cancer-associated mutations are almost exclusively found in RB, implying that RB has a nonredundant role in tumor suppression. We demonstrate that RB preferentially associates with E2F target genes involved in DNA replication and is uniquely required to repress these genes during senescence but not other growth states. Consequently, RB loss leads to inappropriate DNA synthesis following a senescence trigger and, together with disruption of a p21-mediated cell-cycle checkpoint, enables extensive proliferation and rampant genomic instability. Our results identify a nonredundant RB effector function that may contribute to tumor suppression and reveal how loss of RB and p53 cooperate to bypass senescence.
Collection C2: curated gene sets
      CGP: chemical and genetic perturbations
Source publication Pubmed 20385362   Authors: Chicas A,Wang X,Zhang C,McCurrach M,Zhao Z,Mert O,Dickins RA,Narita M,Zhang M,Lowe SW
Exact source Table 2S: lowserum_shRb_up
Related gene sets (show 3 additional gene sets from the source publication)

(show 41 gene sets from the same authors)
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Organism Homo sapiens
Contributed by Arthur Liberzon (Broad Institute)
Source platform HG-U133_Plus_2
Dataset references (show 1 datasets)
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Compendia expression profiles Human tissue compendium (Novartis)
NCI-60 cell lines (National Cancer Institute)
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Version history 3.1: First introduced

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