期刊
CANCER TREATMENT REVIEWS
卷 29, 期 -, 页码 11-19出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0305-7372(03)00077-X
关键词
drug resistance; cell adhesion; myeloma; fibronectin
类别
A wide variety of cellular responses that may afford tumor cells drug-tolerance characteristics. Overexpression of plasma membrane efflux pumps, up-regulation of anti-apoptosis factors, down-regulation of proapoptosis factors, subcellular redistribution of drug targets, and up-regulation of detoxifying enzymes are just a few known mechanisms of cancer cell resistance. In addition to these individual cell adaptations, cellular drug resistance also appears to be mediated by the binding of tumor cells to extracellular matrix (ECM) proteins. Cell adhesion-mediated drug resistance (CAM-DR) is particularly relevant in hematologic malignancies such as multiple myeloma, where myeloma cells localize in the bone marrow and interact with stroma and stromal cells, initiating the production of proteins that stimulate or support tumor survival. Thus, CAM-DR provides a plausible explanation for the protective mechanisms associated with myeloma cell adhesion and demonstrates that the tumor microenvironment may hold the key to elucidating how tumor cells resist chemotherapy. (C) 2003 Published by Elsevier Science Ltd.
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