Crossref journal-article
American Association for the Advancement of Science (AAAS)
Science (221)
Abstract

Human T-lymphotropic virus type III (HTLV-III) or lymphadenopathy-associated virus (LAV) is tropic for human T cells with the helper-inducer phenotype, as defined by reactivity with monoclonal antibodies specific for the T4 molecule. Treatment of T4 + T cells with monoclonal antibodies to T4 antigen blocks HTLV-III/LAV binding, syncytia formation, and infectivity. Thus, it has been inferred that the T4 molecule itself is a virus receptor. In the present studies, the surfaces of T4 + T cells were labeled radioactively, and then the cells were exposed to virus. After the cells were lysed, HTLV-III/LAV antibodies were found to precipitate a surface protein with a molecular weight of 58,000 (58K). By blocking and absorption experiments, this 58K protein was identified as the T4 molecule. No cell-surface structures other than the T4 molecule were involved in the antibody-antigen complex formation. Two monoclonal antibodies, each reactive with a separate epitope of the T4 molecule, were tested for their binding capacities in the presence of HTLV-III/LAV. When HTLV-III/LAV was bound to T4 + T cells, the virus blocked the binding of one of the monoclonal antibodies, T4A (OKT4A), but not of the other, T4 (OKT4). When HTLV-III/LAV was internally radiolabeled and bound to T4 + T cells which were then lysed, a viral glycoprotein of 110K (gp110) coprecipitated with the T4 molecule. The binding of gp110 to the T4 molecule may thus be a major factor in HTLV-III/LAV tropism and may prove useful in developing therapeutic or preventive measures for the acquired immune deficiency syndrome.

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McDougal, J. S., Kennedy, M. S., Sligh, J. M., Cort, S. P., Mawle, A., & Nicholson, J. K. A. (1986). Binding of HTLV-III/LAV to T4 + T Cells by a Complex of the 110K Viral Protein and the T4 Molecule. Science, 231(4736), 382–385.

Authors 6
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  3. J. M. Sligh (additional)
  4. S. P. Cort (additional)
  5. A. Mawle (additional)
  6. J. K. A. Nicholson (additional)
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Dates
Type When
Created 18 years, 10 months ago (Oct. 5, 2006, 4:28 p.m.)
Deposited 1 year, 7 months ago (Jan. 13, 2024, 10:17 a.m.)
Indexed 4 months ago (April 18, 2025, 11:24 a.m.)
Issued 39 years, 6 months ago (Jan. 24, 1986)
Published 39 years, 6 months ago (Jan. 24, 1986)
Published Print 39 years, 6 months ago (Jan. 24, 1986)
Funders 0

None

@article{McDougal_1986, title={Binding of HTLV-III/LAV to T4 + T Cells by a Complex of the 110K Viral Protein and the T4 Molecule}, volume={231}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.3001934}, DOI={10.1126/science.3001934}, number={4736}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={McDougal, J. S. and Kennedy, M. S. and Sligh, J. M. and Cort, S. P. and Mawle, A. and Nicholson, J. K. A.}, year={1986}, month=jan, pages={382–385} }