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Viral Transcytosis Study Data Reported.(Brief Article)
2001 JAN 24 - (NewsRx.com & NewsRx.net) -- Analysis of HIV transcytosis across epithelial cells may have application in strategies to protect the mucosal membranes that are a primary site of HIV infection.
Transcytosis of HIV is induced by viral envelope glycoproteins that bind to epithelial cell membranes.
In a study presented to the 40th annual meeting of the American Society for Cell Biology, held December 9-13, 2000, in San Francisco, California, Morgane Bomsel and Annette Alfsen, both with INSERM in France, reported that "not only surface gp120 (SU-gp120) but also transmembrane gp41 (TM-gp41) envelope subunits bind to the epithelial receptor, the glycosphingolipid galactosyl ceramide, at a site involving the conserved ELDKWA epitope."
Additionally, they said, interaction between "a peptide encompassing the region surrounding the ELDKWA sequence" and labeled Gal Cer was observed that doesn't appear to occur with shorter peptides. This was detected by fluorescence resonance energy transfer (FRET) using the peptide in question "and including the helical charged part and the tryptophan sequence" to study the viral glycoprotein-lipid interaction, they explained.
"Whereas lipids mimicking a raft environment allows FRET, non-raft lipidic environment ...
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Source: HighBeam Research, Viral Transcytosis Study Data Reported.(Brief Article)