10.12.2012 Views

netLibrary - eBook Summary Structure-based Drug Design by ...

netLibrary - eBook Summary Structure-based Drug Design by ...

netLibrary - eBook Summary Structure-based Drug Design by ...

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Document<br />

VI. Conclusion<br />

Page 480<br />

It has now been over a decade since the structure of influenza virus neuraminidase was determined<br />

[45,65]. The development of the 4-substituted Neu5ac2en analog inhibitors dates from 1987 when the<br />

structure of sialic acid and Neu5Ac2en complexed with neuraminidase were determined to sufficient<br />

accuracy to permit modeling of potential inhibitors [66]. The development was a multidisciplinary<br />

collaboration of biochemists, crystallographers, molecular modelers, and synthetic chemists and<br />

culminated in the synthesis [106] and biological testing of the compounds [91]. Preliminary data on the<br />

efficacy of these drugs on humans indicate its effectiveness in both prophylaxis and treatment of the<br />

disease [98]. The 4-guanidino compound is in Phase 2 trials (October, 1995). While drug resistance of<br />

the virus has been observed in vitro, it will be interesting to see if variants arise in animal studies as they<br />

do for Amantidine. This is one of the first rationally designed antiviral drugs to be synthesized and<br />

portends well for this methodology to be used as an additional weapon in controling the many pathogens<br />

that have plagued humanity for so long.<br />

Acknowledgments<br />

The author would like to acknowledge Peter Colman, my collaborator in neuraminidase crystallography,<br />

Mike Lawrence for the GRID maps shown here and reading this manuscript, Brian Smith for discussions<br />

on enzyme mechanisms, Jenny McKimm-Breschkin for discussions on drug resistance, Bert van<br />

Donkelaar for technical support, and Paul Davis for computing support.<br />

References<br />

1. Kilbourne ED. Influenza. New York: Plenum, 1987.<br />

2. Webster RG, Schafer JR, Suss J, Bean Jr WJ, Kawaoko Y. Evolution and ecology of influenza<br />

viruses. In: Hannoun C, et al. eds. Options for the Control of Influenza Virus II. Amsterdam: Excerpta<br />

Medica, 1993:177–185.<br />

3. Lamb RA. Genes and proteins of the influenza virus. In: Krug RM, ed. The Influenza Viruses, ed.<br />

New York: Plenum, 1989: 1–87.<br />

4. Murphy JS, Bang FB. Observations with the electron microscope on cells of chick chorio-allantoic<br />

membrane infected with influenza virus. J Exp Med 1952; 95:259.<br />

5. Compans RW, Dimmock NJ. An electron microscopic study of single-cycle infection of chick<br />

embryo fibroblasts <strong>by</strong> influenza virus. Virology 1969; 39:499.<br />

6. Murphy BR, Webster RG. Orthomyxovirus. In: Fields BN, Knipe DM, eds. Virology. New York:<br />

Raven Press, 1990:1091–1152.<br />

http://legacy.netlibrary.com/nlreader/nlReader.dll?bookid=12640&filename=Page_480.html (1 of 2) [4/9/2004 12:27:51 AM]

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!