The receptor for human T-cell leukemia virus type 1 (HTLV-1) was found to be expressed on a broad range of celt lines derived from multiple species. Receptor expression was assessed using human immunodeficiency virus type 1 particles, pseudotyped with the HTLV-1 envelope glycoprotein, and expressing luciferase under the control of an SV40 enhancer and promoter, infection by pseudotyped virus was blocked with neutralizing antibodies to HTLV-1, and infection was dependent on the presence of the cleavage and fusogenic sequences in the envelope protein precursor. Trypsin treatment of susceptible target lymphocytes reduced entry. Entry was partially resistant to ammonium chloride. (C) 2000 Academic Press.

Original languageEnglish
Pages (from-to)41-48
Number of pages8
Issue number1
StatePublished - Mar 1 2000


  • Envelope
  • Human T-cell leukemia virus
  • Pseudotype
  • Receptor


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