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- W2099282022 startingPage "1170" @default.
- W2099282022 abstract "Most human cancers involve either mutational activation of the Ras oncogenic pathway and/or inactivation of the retinoblastoma tumor suppressor (RB) pathway. Paradoxically, tumors that harbor Ras mutations almost invariably retain expression of a wild-type pRB protein. We explain this phenomenon by demonstrating that Ras-induced oncogenic transformation surprisingly depends on functional pRB protein. Cells lacking pRB are less susceptible to the oncogenic actions of H-RasV12 than wild-type cells and activated Ras has an inhibitory effect on the proliferation of pRB-deficient human tumor cells. In addition, depletion of pRB from Ras-transformed murine cells or human tumor cells that harbor Ras pathway mutations inhibits their proliferation and anchorage-independent growth. In sharp contrast to pRB-/- 3T3 cells, fibroblasts deficient in other pRB family members (p107 and p130) are more susceptible to Ras-mediated transformation than wild-type 3T3 cells. Moreover, loss of pRB in tumor cells harboring a Ras mutation results in increased expression of p107, and overexpression of p107 but not pRB strongly inhibits proliferation of these tumor cells. Together, these findings suggest that pRB and p107 have distinct roles in Ras-mediated transformation and suggest a novel tumor-suppressive role for p107 in the context of activated Ras." @default.
- W2099282022 created "2016-06-24" @default.
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- W2099282022 date "2006-02-01" @default.
- W2099282022 modified "2023-09-27" @default.
- W2099282022 title "The Retinoblastoma Protein Is Required for Ras-Induced Oncogenic Transformation" @default.
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- W2099282022 doi "https://doi.org/10.1128/mcb.26.4.1170-1182.2006" @default.
- W2099282022 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/1367176" @default.
- W2099282022 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16449633" @default.
- W2099282022 hasPublicationYear "2006" @default.
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