alexa Cancer stem cells--important players in tumor therapy resistance.
Pharmaceutical Sciences

Pharmaceutical Sciences

Biochemistry & Pharmacology: Open Access

Author(s): Colak S, Medema JP

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Abstract Resistance to tumor therapy is an unsolved problem in cancer treatment. A plethora of studies have attempted to explain this phenomenon and many mechanisms of resistance have been suggested over recent decades. The concept of cancer stem cells (CSCs), which describes tumors as hierarchically organized, has added a new level of complexity to therapy failure. CSCs are the root of cancers and resist chemo- and radiotherapy, explaining cancer recurrence even many years after therapy is ended. This review discusses briefly CSCs in cancers, gives an overview of the role of CSCs in therapy resistance, and discusses the potential means of targeting these therapy-resistant tumor cells. © 2014 FEBS. This article was published in FEBS J and referenced in Biochemistry & Pharmacology: Open Access

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