Journal
DRUG RESISTANCE UPDATES
Volume 13, Issue 4-5, Pages 109-118Publisher
CHURCHILL LIVINGSTONE
DOI: 10.1016/j.drup.2010.07.001
Keywords
Drug resistance; Cancer; miRNA; EMT; Cancer stem cells; Natural compounds; Curcumin
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Funding
- National Cancer Institute, NIH [5R01CA131151, 5R01CA083695, 1R01CA132794, 1R01CA101870]
- Department of Defense [W81XWH-08-1-0196]
- University of Texas MD Anderson Cancer Center [5P20-CA101936]
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Although chemotherapy is an important therapeutic strategy for cancer treatment, it fails to eliminate all tumor cells due to intrinsic or acquired drug resistance, which is the most common cause of tumor recurrence. Emerging evidence suggests an intricate role of cancer stem cells (CSCs) and epithelial-mesenchymal transition (EMT)-type cells in anticancer drug resistance. Recent studies also demonstrated that microRNAs (miRNAs) play critical roles in the regulation of drug resistance. Here we will discuss current knowledge regarding CSCs, EMT and the role of regulation by miRNAs in the context of drug resistance, tumor recurrence and metastasis. A better understanding of the molecular intricacies of drug-resistant cells will help to design novel therapeutic strategies by selective targeting of CSCs and EMT-phenotypic cells through alterations in the expression of specific miRNAs towards eradicating tumor recurrence and metastasis. A particular promising lead is the potential synergistic combination of natural compounds that affect critical miRNAs, such as curcumin or epigallocatechin-3-gallate (EGCG) with chemotherapeutic agents. (C) 2010 Elsevier Ltd. All rights reserved.
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