Lipoproteins account for part of the broad non-specific antiviral activity of human serum

Indra P. Singh, Ashok K. Chopra, Dorian H. Coppenhaver, G. M. Ananatharamaiah, Samuel Baron

Research output: Contribution to journalArticlepeer-review

62 Scopus citations


Several antiviral substances have been detected in human serum but few have been shown to possess broad antiviral activity. These broadly active antiviral molecules could be of significance as innate defense mechanisms. We have previously identified and characterized a broadly antiviral glycoprotein, UTIβ, which accounts for 50 antiviral units/ml of human and mammalian sera. In addition there are reports of antiviral activity of human serum apolipoprotein A-1 (apo A-1), an important constituent of high density lipoprotein (HDL), against human immunodeficiency virus (HIV) and herpesvirus. Therefore we investigated (1) whether HDL is broadly antiviral, (2) how much of the broad antiviral activity of serum is due to HDL, and (3) the mechanism(s) of HDL's antiviral action. In this paper we report that (1) HDL does have broad antiviral activity, (2) HDL accounts for a modest but significant portion of the antiviral activity of serum, and (3) HDL acts by preventing virus penetration. Overall, HDL may be one of the broadly antiviral defences in the bloodstream. Copyright (C) 1999 Elsevier Science B.V.

Original languageEnglish (US)
Pages (from-to)211-218
Number of pages8
JournalAntiviral research
Issue number3
StatePublished - Jul 1999


  • Antiviral
  • Apolipoprotein A-1
  • HDL
  • Lipoproteins
  • UTIβ

ASJC Scopus subject areas

  • Pharmacology
  • Virology


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