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Cell cycle control by PTEN #MMPMID28602818
Brandmaier A; Hou SQ; Shen WH
J Mol Biol 2017[Jul]; 429 (15): 2265-77 PMID28602818show ga
Continuous and error-free chromosome inheritance through the cell cycle is essential for genomic stability and tumor suppression. However, accumulation of aberrant genetic materials often causes the cell cycle to go awry, leading to malignant transformation. In response to genotoxic stress, cells employ diverse adaptive mechanisms to halt or exit the cell cycle temporarily or permanently. The intrinsic machinery of cycling, resting, and exiting shapes the cellular response to extrinsic stimuli whereas prevalent disruption of the cell cycle machinery in tumor cells often confers resistance to anti-cancer therapy. PTEN is a tumor suppressor and a guardian of the genome that is frequently mutated or deleted in human cancer. Moreover, it is increasingly evident that PTEN deficiency disrupts the fundamental processes of genetic transmission. Cells lacking PTEN exhibit cell cycle deregulation and cell fate reprogramming. Here we review the role of PTEN in regulating the key processes in and out of cell cycle to optimize genomic integrity.