Volume 93 - Number

 2007



Maturation Inhibitors: a New Therapeutic Class Targets the Virus Structure


Karl Salzwedel, David E. Martin and Michael Sakalian   |Full Article in PDF|

Panacos Pharmaceuticals, Inc. Gaithersburg MD, USA


Abstract

The current standard of care for HIV/AIDS in the developed world is HAART therapy, usually a combination of two reverse transcriptase inhibitors and a protease inhibitor. Despite the success of this regimen, there is a continuing need for new drug options to overcome problems with tolerability and the emergence of viral resistance. In this review we discuss the discovery of a potential new class of antiretroviral therapeutics, known as maturation inhibitors, and the development of the first-in-class compound, bevirimat. Bevirimat is distinguished from the currently available antiretrovirals by its unique target and mode of action. While the specific interactions responsible for activity have yet to be fully characterized, it is clear that the target for bevirimat is the Gag polyprotein precursor, the main structural protein responsible for assembly and budding of virion particles. As basic research continues on the precise mechanism of action of bevirimat, clinical development is progressing, with demonstration of both safety and efficacy in early-stage trials. These encouraging results, coupled with the discovery and development of future generations of maturation inhibitors, suggest that maturation inhibitors may be added to the growing set of tools available to control HIV/AIDS.


Key Words:

HIV. Inhibitor. Virus assembly. Gag protein. Drug development.






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