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. 1987 Nov;84(22):8120–8124. doi: 10.1073/pnas.84.22.8120

Inhibition of human immunodeficiency virus syncytium formation and virus replication by castanospermine.

B D Walker 1, M Kowalski 1, W C Goh 1, K Kozarsky 1, M Krieger 1, C Rosen 1, L Rohrschneider 1, W A Haseltine 1, J Sodroski 1
PMCID: PMC299490  PMID: 2825177

Abstract

Castanospermine (1,6,7,8-tetrahydroxyoctahydroindolizine) is a plant alkaloid that modifies glycosylation by inhibiting alpha-glucosidase I. Castanospermine is shown to inhibit syncytium formation induced by the envelope glycoprotein of the human immunodeficiency virus and to inhibit viral replication. The decrease in syncytium formation in the presence of castanospermine can be attributed to inhibition of processing of the envelope precursor protein gp160, with resultant decreased cell surface expression of the mature envelope glycoprotein gp120. In addition, castanospermine may cause defects in steps involved in membrane fusion after binding of CD4 antigen. The antiviral effects of castanospermine may be due to modifications of the envelope glycoprotein that affect the ability of the virus to enter cells after attachment to the CD4 cell receptor.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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