Rapid Induction of Senescence in Human Cervical Carcinoma Cells

Overview

Journal Proc Natl Acad Sci U S A

Specialty Science

Date 2000 Sep 27

PMID 11005870

Citations 92

Authors

E C Goodwin

E Yang

C J Lee

H W Lee

D DiMaio

E S Hwang

Affiliations

Soon will be listed here.

Abstract

Expression of the bovine papillomavirus E2 regulatory protein in human cervical carcinoma cell lines repressed expression of the resident human papillomavirus E6 and E7 oncogenes and within a few days caused essentially all of the cells to synchronously display numerous phenotypic markers characteristic of cells undergoing replicative senescence. This process was accompanied by marked but in some cases transient alterations in the expression of cell cycle regulatory proteins and by decreased telomerase activity. We propose that the human papillomavirus E6 and E7 proteins actively prevent senescence from occurring in cervical carcinoma cells, and that once viral oncogene expression is extinguished, the senescence program is rapidly executed. Activation of endogenous senescence pathways in cancer cells may represent an alternative approach to treat human cancers.

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