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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Recker, D. P. Sawasdikosol, S. Kindt, T. J. Lee, K. Hague, B. F. Brown, T. J. |
| Description | Author Affiliation: Hague BF ( Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852.); |
| Abstract | Human CD4 (HuCD4) is the principal receptor for human immunodeficiency virus type 1 (HIV-1) in human cell infection. Susceptibility of rabbit cell lines to infection with HIV-1 raised questions concerning whether a CD4 homolog serves as HIV-1 receptor on rabbit cells. Sequence comparisons of rabbit CD4 (RbCD4) cloned from a rabbit thymus cDNA library showed that 6 of the 18 residues implicated in HIV-1 binding by CD4 differ between the human and rabbit proteins. No correlation between RbCD4 expression by rabbit cell lines and their ability to support HIV-1 infection was seen. Transfection of RbCD4-negative, HTLV-I-transformed cell lines with HuCD4 significantly enhanced HIV-1 infectivity, suggesting that these lines lack a receptor present on other RbCD4-negative lines that produce high levels of p24 in their native state. Inhibition of HIV-1 infection with soluble HuCD4 was demonstrated for all rabbit lines tested, but complete inhibition was obtained only with a rabbit T-cell line expressing RbCD4 and with HuCD4 transfectants. The results suggest that HIV-1 infection of the RbCD4-positive line proceeds through a receptor similar to HuCD4 but that an additional receptor or receptors may serve this purpose in RbCD4-negative lines. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 17 |
| Volume Number | 89 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1992-10-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Antigens, CD4 Physiology HIV Infections Metabolism HIV-1 Growth & Development Receptors, HIV Amino Acid Sequence Animals Genetics Cells, Cultured Cloning, Molecular In Vitro Techniques Molecular Sequence Data Oligodeoxyribonucleotides Chemistry Rabbits Sequence Alignment Species Specificity Comparative Study Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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