Title: Retroviral-infection increases tumorigenic potential of MDA-MB-231 breast carcinoma cells by expanding an aldehyde dehydrogenase (ALDH1) positive stem-cell like population.

Authors: Wegman-Points, Lauren J; Teoh-Fitzgerald, Melissa L T; Mao, Gaowei; Zhu, Yueming; Fath, Melissa A; Spitz, Douglas R; Domann, Frederick E

Published In Redox Biol, (2014)

Abstract: Retroviral transformation has been associated with pro-proliferative oncogenic signaling in human cells. The current study demonstrates that transduction of human breast carcinoma cells (MDA-MB231) with LXSN and QCXIP retroviral vectors causes significant increases in growth rate, clonogenic fraction, and aldehyde dehydrogenase-1 positive cells (ALDH1+), which is associated with increased steady-state levels of cancer stem cell populations. Furthermore, this retroviral-induced enhancement of cancer cell growth in vitro was also accompanied by a significant increase in xenograft tumor growth rate in vivo. The retroviral induced increases in cancer cell growth rate were partially inhibited by treatment with 100 U/ml polyethylene glycol-conjugated-(PEG)-superoxide dismutase and/or PEG-catalase. These results show that retroviral infection of MDA-MB231 human breast cancer cells is capable of enhancing cell proliferation and cancer stem cell populations as well as suggesting that modulation of reactive oxygen species-induced pro-survival signaling pathways may be involved in these effects.

PubMed ID: 25009786

MeSH Terms: No MeSH terms associated with this publication