期刊
CELL CYCLE
卷 4, 期 9, 页码 1149-1152出版社
TAYLOR & FRANCIS INC
DOI: 10.4161/cc.4.9.2038
关键词
Taxol; drug resistance; pharmacogenomics; DNA microarrays; microtubule binding proteins; Tau protein
类别
Microtubule binding protein Tau was recently identified through gene expression analysis of human breast cancer tissues as a novel marker of response to paclitaxel. 1 This article reviews these recent findings and provides additional information to support the role of Tau as an emerging marker and mediator of paclitaxel sensitivity. Low expression of Tau is associated with increased sensitivity to paclitaxel in human breast cancer as well as in a broad range of cell lines. Down regulation of Tau in cell lines by siRNA increases their sensitivity to paclitaxel but not to anthracycline chemotherapy. We propose that this is due to increased paclitaxel binding to microtubules when microtubules are assembled in the presence of low concentrations ( or absence) of Tau compared to microtubules that are formed in the presence of physiological ( or higher) levels of Tau.
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