Glycoglycerolipid from the membranes of Acholeplasma laidlawii binds to human immunodeficiency virus-1 (HIV-1) and accelerates its entry into cells

Takashi Shimizu, Sumio Arai, Hiroto Imai, Tohru Oishi, Masahiro Hirama, Atsushi Koito, Yutaka Kida, Koichi Kuwano

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We have reported previously that glycoglycerolipids derived from the membranes of Acholeplasma laidlawii, 3-O-[2′-O-(α-D-glucopyranosyl)- 6′-O-acyl-α-glucopyranosyl]-1,2-di-O-acyl-sn-glycerols (GAGDGs) bind to human cell lines. In addition, the GAGDGs were found to augment HIV-1 infection in human cell lines. Here we show that GAGDG binds to HIV-1 and facilitates the entry of HIV-1 into cells. The binding ability of GAGDG to HIV-1 was blocked by anti-GAGDG serum. Binding assay with synthetic GAGDGs and related compounds showed that the presence of branching form of acyl chains at the C14 or C16 position, glucose, and the acyl chain binding to the glucose were critical for efficient binding. GAGDG efficiently augmented the entry of HIV-1 into cells in a single-cycle replication assay. These results indicate that GAGDG of A. laidlawii membranes participates in the facilitation of HIV-1 infection.

Original languageEnglish
Pages (from-to)182-188
Number of pages7
JournalCurrent Microbiology
Volume48
Issue number3
DOIs
Publication statusPublished - Dec 1 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Microbiology
  • Applied Microbiology and Biotechnology

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