Investigations into the mechanism by which sulfated polysaccharides inhibit HIV infection in vitro

AIDS Res Hum Retroviruses. 1992 Jan;8(1):19-26. doi: 10.1089/aid.1992.8.19.

Abstract

Sulfated polysaccharides have been shown to inhibit human immunodeficiency virus (HIV) infection in vitro. Dextrin sulfate, fucoidan, and dextran sulfate fail to neutralize virions directly, but interact with target cells to inhibit virus entry. Ionic interactions of sulfated polyanions with oppositely charged cell surface components, including CD4, have been assumed to be the inhibitory mechanism. It is shown that the sulfated polysaccharides inhibit infection of both CD4+ and CD4- cell lines by HIV and also that they inhibit HTLV-1 and, to a lesser extent, the simian retrovirus, MPMV, which use receptors other than CD4. One binding site for radiolabeled fucoidan on the surface of human T cells is an 18 kD protein, but its significance is not yet clear.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antiviral Agents / pharmacology*
  • CD4 Antigens / drug effects
  • CD4-Positive T-Lymphocytes / drug effects
  • Cell Line
  • HIV Envelope Protein gp120 / drug effects
  • HIV Infections / drug therapy
  • HIV Infections / immunology
  • HIV Infections / prevention & control*
  • HIV-1 / drug effects*
  • Humans
  • Polysaccharides / pharmacology*
  • Receptors, Virus / drug effects

Substances

  • Antiviral Agents
  • CD4 Antigens
  • HIV Envelope Protein gp120
  • Polysaccharides
  • Receptors, Virus