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Inhibition of HIV protease by monoclonal antibodies

✍ Scribed by P. Rezacova; J. Brynda; M. Fabry; M. Horejsi; R. Stouracova; J. Lescar; V. Chitarra; M. M. Riottot; J. Sedlacek; G. A. Bentley

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
272 KB
Volume
15
Category
Article
ISSN
0952-3499

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✦ Synopsis

Abstract

The protease of HIV plays a critical role in the maturation of the infectious particles of the virus. The enzyme has therefore been extensively studied with the objective of developing therapeutics that inhibit viral proliferation. We have produced monoclonal antibodies specific for the HIV‐1 protease, and selected those that inhibit enzyme function for use as probes to study the enzyme's activity and as an eventual aid for the development of potential inhibitors targeted to regions other than the active site. We have characterized two such mAbs, F11.2.32 and 1696, which have inhibition constants in the low nanomolar range and which recognize epitopes from different regions of the protease. The crystal structures of the two antibodies, both in the free state as well as complexes with peptide fragments corresponding to their respective epitopes, have been solved. The structural analyses, taken together with other functional data on the antibodies, suggest mechanisms of protease inhibition by these antibodies. Copyright Β© 2002 John Wiley & Sons, Ltd.

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