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Cancer Cell. 2011 Sep 13;20(3):370-83. doi: 10.1016/j.ccr.2011.08.010.

Mesenchymal stem cells induce resistance to chemotherapy through the release of platinum-induced fatty acids.

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  • 1Department of Medical Oncology, University Medical Center Utrecht, The Netherlands.

Abstract

The development of resistance to chemotherapy is a major obstacle for lasting effective treatment of cancer. Here, we demonstrate that endogenous mesenchymal stem cells (MSCs) become activated during treatment with platinum analogs and secrete factors that protect tumor cells against a range of chemotherapeutics. Through a metabolomics approach, we identified two distinct platinum-induced polyunsaturated fatty acids (PIFAs), 12-oxo-5,8,10-heptadecatrienoic acid (KHT) and hexadeca-4,7,10,13-tetraenoic acid (16:4(n-3)), that in minute quantities induce resistance to a broad spectrum of chemotherapeutic agents. Interestingly, blocking central enzymes involved in the production of these PIFAs (cyclooxygenase-1 and thromboxane synthase) prevents MSC-induced resistance. Our findings show that MSCs are potent mediators of resistance to chemotherapy and reveal targets to enhance chemotherapy efficacy in patients.

Copyright © 2011 Elsevier Inc. All rights reserved.

PMID:
21907927
[PubMed - indexed for MEDLINE]
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