Synthetic Lethality Of Retinoblastoma Mutant Cells In The Drosophila Eye By Mutation Of A Novel Peptidyl Prolyl Isomerase Gene
GENETICS(2005)
摘要
Mutations that inactivate the retinoblastoma (Rb) pathway are common in human tumors. Such mutations promote tumor growth by deregulating the G1 cell cycle checkpoint. However, uncontrolled cell cycle progression can also produce new liabilities for cell survival. To uncover such liabilities in Rb mutant cells, we performed a clonal screen in the Drosophila eye to identify second-site mutations that eliminate Rbf(-) cells, but allow Rbf(+) cells to survive. Here we report the identification of a mutation in a novel highly conserved peptidyl prolyl isomerase (PPIase) that selectively eliminates Rbf(-) cells from the Drosophila eye.
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关键词
cell cycle,cell cycle checkpoint,mutation,amino acid sequence
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