Improving the targeting of tubulin-binding agents: lessons from drug resistance studies.

Abstract:

:Natural product drugs that target the tubulin/microtubule system remain an important component in the therapeutic arsenal to treat many types of malignancies. Agents such as the taxanes and vinca alkaloids bind to beta-tubulin and disrupt microtubule dynamics by inducing a potent mitotic block and subsequent cell death. Understanding why certain cancers do not respond to treatment or develop resistance has been the subject of numerous studies in recent years. An increasing body of evidence suggests that alterations in the drug target, such as tubulin mutations, altered microtubule dynamics, altered tubulin isotype expression, and modifications in microtubule regulatory proteins, are key mechanisms of antimicrotubule drug resistance. In addition, recent work indicates that other cytoskeletal proteins that can regulate microtubule dynamics through signaling or structural interactions may be important determinants of antimicrotubule resistance. As our understanding of drug action and resistance mechanisms has increased, we can now begin to exploit these to design strategies that overcome, or counteract resistance, hence improving the efficacy of antimicrotubule agents for the treatment of cancer. This review highlights the major areas of investigation as they relate to the tubulin/microtubule system and discusses opportunities that potentially exist for improved therapeutic benefit in the treatment of drug resistant disease.

journal_name

Curr Pharm Des

authors

Verrills NM,Kavallaris M

doi

10.2174/1381612053764706

subject

Has Abstract

pub_date

2005-01-01 00:00:00

pages

1719-33

issue

13

eissn

1381-6128

issn

1873-4286

journal_volume

11

pub_type

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