Analysis of the molecules involved in human T-cell leukaemia virus type 1 entry by a vesicular stomatitis virus pseudotype bearing its envelope glycoproteins

K. Okuma, Y. Matsuura, H. Tatsuo, Y. Inagaki, M. Nakamura, N. Yamamoto, Y. Yanagi

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23 Citations (Scopus)

Abstract

Cellular entry of human T-cell leukaemia virus type 1 (HTLV-1) was studied by a quantitative assay system using vesicular stomatitis virus (VSV) pseudotypes in which a recombinant VSV (VSVΔG*) containing the gene for green fluorescent protein instead of the VSV G protein gene was complemented with viral envelope glycoproteins in trans. Most of the cell lines tested showed susceptibility to VSVΔG* complemented with either HTLV-1 envelope glycoproteins (VSVΔG*-Env) or VSV G protein (VSVΔG*-G), but not to VSVΔG* alone, indicating that cell-free HTLV-1 could infect many cell types from several species. High concentration pronase treatment of cells reduced their susceptibility to VSVΔG*-Env, while trypsin treatment, apparently, did not. Treatment of the cells with sodium periodate, heparinase, heparitinase, phospholipase A2 or phospholipase C reduced the susceptibility of cells to VSVΔG*-Env, but not to VSVΔG* complemented with measles virus (Edmonston strain) H and F proteins (VSVΔG*-EdHF), which was used as a control. Purified phosphatidylcholine also inhibited the infectivity of VSVΔG*-Env, but not VSVΔG*-G. These findings indicated that, in addition to cell surface proteins, glycosaminoglycans and phospholipids play an important role in the process of cell-free HTLV-1 entry.

Original languageEnglish
Pages (from-to)821-830
Number of pages10
JournalJournal of General Virology
Volume82
Issue number4
DOIs
Publication statusPublished - 2001

All Science Journal Classification (ASJC) codes

  • Virology

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