title: A chimeric human T-cell lymphotropic virus type 1 with the envelope glycoprotein of Moloney murine leukemia virus is infectious for murine cells.
abstract: We constructed a chimeric human T-cell lymphotropic virus type 1 (HTLV-1) provirus in which the original envelope precursor sequence was replaced by that of ecotropic Moloney murine leukemia virus (Mo-MuLV). Chimeric particles produced by transient transfection of this chimeric provirus were infectious for murine cells, such as NIH 3T3 fibroblasts, lymphoid EL4 cells, and primary CD4(+) T lymphocytes, whereas HTLV-1 particles were not. The infectivity of chimeric particles increased 10 times when the R peptide located at the carboxy terminus of the MuLV envelope glycoprotein was deleted. Primary murine CD4(+) T lymphocytes, infected by the Delta R chimeric virus, released particles that could spread the infection to other naive murine lymphoid cells. This chimeric virus, with the Mo-MuLV envelope glycoprotein and the replication characteristics of HTLV-1, should be useful in studying the pathogenesis of HTLV-1 in a mouse model.
authors.affiliation: Unité des Virus Lents, URA 1930 CNRS, Institut Pasteur, Paris, France.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Delebecque
authors.forename: Karin
authors.initials: K
authors.lastname: Pramberger
authors.forename: Marie-Christine
authors.initials: MC
authors.lastname: Prévost
authors.forename: Michel
authors.initials: M
authors.lastname: Brahic
authors.forename: Frédéric
authors.initials: F
authors.lastname: Tangy
mesh_terms: D016475:3T3 Cells; D000595:Amino Acid Sequence; D000818:Animals; D015496:CD4-Positive T-Lymphocytes / Q000821:virology; D015368:Human T-lymphotropic virus 1 / Q000235:genetics* / Q000378:metabolism / Q000472:pathogenicity*; D006801:Humans; D008214:Lymphocytes; D051379:Mice; D008969:Molecular Sequence Data; D008979:Moloney murine leukemia virus / Q000235:genetics / Q000378:metabolism*; D011533:Proviruses; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism*; D014162:Transfection; D014759:Viral Envelope Proteins / Q000235:genetics* / Q000378:metabolism
chemical_list: D011993:Recombinant Fusion Proteins; D014759:Viral Envelope Proteins