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Douglas D. Fang, Joan Cao, Jitesh P. Jani, Konstantinos Tsaparikos, Alessandra Blasina, Jill Kornmann, Maruja E. Lira, Jianying Wang, Zuzana Jirout, Justin Bingham, Zhou Zhu, Yin Gu, Gerrit Los, Zdenek Hostomsky, Todd VanArsdale
Frontiers of Medicine 2013, Volume 7, Issue 4, Pages 462-476 doi: 10.1007/s11684-013-0270-6
Evaluating the effects of novel drugs on appropriate tumor models has become crucial for developing more effective therapies that target highly tumorigenic and drug-resistant cancer stem cell (CSC) populations. In this study, we demonstrate that a subset of cancer cells with CSC properties may be enriched into tumor spheroids under stem cell conditions from a non-small cell lung cancer cell line. Treating these CSC-like cells with gemcitabine alone and a combination of gemcitabine and the novel CHK1 inhibitor PF-00477736 revealed that PF-00477736 enhances the anti-proliferative effect of gemcitabine against both the parental and the CSC-like cell populations. However, the CSC-like cells exhibited resistance to gemcitabine-induced apoptosis. Collectively, the spheroid-forming CSC-like cells may serve as a model system for understanding the mechanism underlying the drug resistance of CSCs and for guiding the development of better therapies that can inhibit tumor growth and eradicate CSCs.
Keywords： drug resistance cancer stem cell checkpoint kinase 1 (CHK1) PF-00477736 lung cancer tumorigenicity
Title Author Date Type Operation
Combined gemcitabine and CHK1 inhibitor treatment induces apoptosis resistance in cancer stem cell-like cells enriched with tumor spheroids from a non-small cell lung cancer cell line
Douglas D. Fang, Joan Cao, Jitesh P. Jani, Konstantinos Tsaparikos, Alessandra Blasina, Jill Kornmann, Maruja E. Lira, Jianying Wang, Zuzana Jirout, Justin Bingham, Zhou Zhu, Yin Gu, Gerrit Los, Zdenek Hostomsky, Todd VanArsdale
Journal Article
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