Title : Effects of concomitant inactivation of p53 and pRb on response to doxorubicin treatment in breast cancer cell lines.

Pub. Date : 2017

PMID : 28580174






5 Functional Relationships(s)
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1 Effects of concomitant inactivation of p53 and pRb on response to doxorubicin treatment in breast cancer cell lines. Doxorubicin tumor protein p53 Homo sapiens
2 We inactivated TP53 and/or RB1 by siRNA mediated knockdown in breast cancer cell lines varying with respect to ER/PgR and Her-2 status as well as TP53 and RB1 mutation status (MCF-7, T47D, HTB-122 and CRL2324) and determined effects on cell cycle arrest, apoptosis and senescence with or without concomitant treatment with doxorubicin. Doxorubicin tumor protein p53 Homo sapiens
3 While no significant change was observed for the CRL2324 cells upon doxorubicin treatment, MCF-7, T47D as well as HTB-122 cells responded to knockdown of TP53 and RB1 in concert, with a decrease in the fraction of cells in G1/G0-phase (P=0.042, 0.021 and 0.027, respectively). Doxorubicin tumor protein p53 Homo sapiens
4 Interestingly, upon doxorubicin treatment, concomitant inactivation of TP53 and RB1 caused a decrease in senescence in MCF-7 cells (P=0.027). Doxorubicin tumor protein p53 Homo sapiens
5 We found concomitant inactivation of TP53 and RB1 to affect various routes of response to doxorubicin treatment in breast cancer cells. Doxorubicin tumor protein p53 Homo sapiens