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Human-Specific Factors are Required for Tat-Mediated Trans-Activation of the HIV-1 and HIV-2 LTRs

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Abstract

The regulation of HIV gene expression is a complex process involving the interaction of viral regulatory gene products and host cell factors. The Tat gene has been shown to play an essential role in the positive regulation of viral gene expression (6, 9). HIV-1 Tat mediates its effect through a sequence termed TAR, which has been genetically defined to reside in the R region of the LTR (19). The TAR region is present in the leader sequence of all viral encoded RNAs, as well as both ends the proviral DNA. The boundaries of HIV-1 TAR are +1 to +80 (where +1 indicates the initiation of transcription). The TAR region has the potential to fold into a stem-loop secondary structure when transcribed into RNA.

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References

  1. Berkhout, B., A. Gatignol, A. B. Rabson and K.-T. Jeang. 1990. TAR-independent activation of the HIV-1 LTR: Evidence that tat requires specific regions of the promoter. Cell 62: 757–767.

    Article  PubMed  CAS  Google Scholar 

  2. Berkhout, B., R. H. Silverman and K.-T. Jeang. 1989. Tat trans-activates the human immunodeficiency virus through a nascent RNA target. Cell 59: 273–282.

    Article  PubMed  CAS  Google Scholar 

  3. Braddock, M., A. Chambers, W. Wilson, M. P. Esnouf, S. E. Adams, A. J. Kingsman and S. M. Kingsman. 1989. HIV-1 TAT “activates” presynthesized RNA in the nucleus. Cell 58: 269–279.

    Article  PubMed  CAS  Google Scholar 

  4. Clavel, F., M. Guyader, D. Guetard, M. Salle, L Montagnier and M. Alizon. 1986. Molecular cloning and polymorphism of the human immune deficiency virus type 2. Nature 324: 691–695.

    Google Scholar 

  5. Cullen, B. R. 1986. Trans-activation of human immunodeficiency virus occurs via a bimodal mechanism. Cell 46: 973–982.

    Article  PubMed  CAS  Google Scholar 

  6. Dayton, A. I., J. G. Sodroski, C. A. Rosen, W. C. Goh and W. A. Haseltine. 1986. The trans-activator gene of the human T cell lymphotropic virus type III is required for replication. Cell 44: 941–947.

    Article  PubMed  CAS  Google Scholar 

  7. Dingwall, C., I. Ernberg, M. J. Gait, S. M. Green, S. Heaphy, J. Karn, A. D. Lowe, M. Singh, M. A. Skinner and R. Valerio. 1989. Human immunodeficiency virus 1 tat protein binds trans-activation-responsive region (TAR) RNA in vitro. Proc. Natl. Acad. Sci. U.S.A. 86: 6925–6929.

    Article  PubMed  CAS  Google Scholar 

  8. Emerman, M., L. Guyader, L. Montagnier, D. Baltimore and M. Muesing. 1987. The specificity of the human immunodeficiency virus type 2 trans-activator is different from that of human immunodeficiency virus type 1. EMBO J. 6: 3755–3762.

    PubMed  CAS  Google Scholar 

  9. Fisher, A. G., M. B. Feinberg, S. F. Josephs, ME. Harper, L. M. Marselle, G. Reyes, M. A. Gonda, A. Aldovini, C. Debouk, R. C. Gallo and F. Wong-Staal. 1986. The trans-activator gene of HTLV-III is essential for virus replication. Nature 320: 367–371.

    Google Scholar 

  10. Hart, C. E., C.-Y. Ou, J. C. Galphin, J. T. Moore, J. J. Bachler, J. J. Wasmuth, S. R. Petteway and Schochetman. 1989. Human chromosome 12 is required for HIV-1 expression in human-hamster hybrid cells. Science 246: 488–491.

    Article  PubMed  CAS  Google Scholar 

  11. Jeang, K.-T., P. R. Shank and A. Kumar. 1988. Transcriptional activation of homologous viral long terminal repeats by the human immunodeficiency virus type 1 or the human T-cell leukemia virus type I tat proteins occurs in the absence of de novo protein synthesis. Proc. Natl. Acad. Sci. U.S.A. 85: 82918295.

    Google Scholar 

  12. Kao, S. Y., A. F. Calman, P. A. Luciw and B. M. Peterlin. 1987. Anti-termination of transcription within the long terminal repeat of HIV-1 by tat gene product. Nature 330: 489–493.

    Article  PubMed  CAS  Google Scholar 

  13. Laspia, M. F., A. P. Rice and M. B. Mathews. 1989. HIV-1 tat protein increases transcriptional initiation and stabilizes elongation. Cell 59: 283–292.

    Article  PubMed  CAS  Google Scholar 

  14. Newstein, M., E. J. Stanbridge, G. Casey and P. R. Shank. 1990. Human chromosome 12 encodes a species-specific factor whichincreases human immunodeficiency virus type 1 tat-mediated trans-activation in rodent cells. J. Virol. 64: 4565–4567.

    PubMed  CAS  Google Scholar 

  15. Pavalakis, G. N., B. K. Felber and C. M. Wright. 1988. A fusion assay for the detection of HIV infected cells. p. 439–466 In D. Bolognesi (Ed.) Human retroviruses, cancer, and AIDS. Alan R. Liss, Inc, New York.

    Google Scholar 

  16. Peterlin, B. M., P. A. Luciw, P. J. Barr and M. D. Walker. 1987. Elevated levels of mRNA can account for the transactivtion of human immunodeficiency virus. Proc. Natl. Acad. Sci. USA 83: 9734–9738.

    Article  Google Scholar 

  17. Rice, A. and M. Mathews. 1988. Transcriptional but not translational regulation of HIV-1 by the tat gene product. Nature 332: 551–553.

    Article  PubMed  CAS  Google Scholar 

  18. Rosen, C.A., J.G. Sodroski, W.C. Goh, A.I. Dayton, J. Lippke, and W.A. Haseltine. 1986. Post-transcriptional regulation accounts for the trans-activation of the human Tlymphotropic virus type III. Nature 319: 555–559.

    Article  PubMed  CAS  Google Scholar 

  19. Rosen, C. A., J. G. Sodroski and W. A. Haseltine. 1985. Location of cis-acting regulatory sequences in the human T-cell leukemia virus type I long terminal repeat. Proc. Natl. Acad. Sci. U.S.A. 82: 6502–6506.

    Article  PubMed  CAS  Google Scholar 

  20. Saxon, P. J., E. S. Srivatsan, G. V. Leipzig, J. H. Sameshima and E. J. Stanbridge. 1985. Selective transfer of individual human chromosomes to recipient cells. Mol. Cell. Biol. 5: 140–146.

    PubMed  CAS  Google Scholar 

  21. Seigel, L. J., L. Ratner, s. F. Josephs, D. Derse, M. B. Feinberg, G. R. Reyes, S. J. O’Brien and F. Wong-Staal. 1986. Transactivation induced by human T-lymphotropic virus type III (HTLV-III) maps to a viral sequence encoding 58 amino acids and lacks tissue specificity. Virology 148: 226–231.

    Article  PubMed  CAS  Google Scholar 

  22. Selby, M. J. and B. M. Peterlin. 1990. Trans-activation by HIV-1 tat via a heterologous RNA binding protein. Cell 62: 769–776.

    Article  PubMed  CAS  Google Scholar 

  23. Selden, R. F., K. Burke, M. E. Rowe, H. M. Goodman and D. D. Moore. 1986. Human growth hormone as a reporter gene in regulation studies employing transient gene expression. Mol. Cell. Biol. 6: 3173–3179.

    PubMed  CAS  Google Scholar 

  24. Southgate, C., M. L. Zapp and M. R. Green. 1990. Activation of transcription by HIV-1 tat protein tethered to nascent RNA through another protein. Nature 345: 640–642.

    Article  PubMed  CAS  Google Scholar 

  25. Viglianti, G. A. and J. I. Mullins. 1988. Functional comparison of trans-activation by simian immunodeficiency virus from Rhesus macaques and human immunodeficiency virus type 1. J. Virol. 62: 4523–4532.

    PubMed  CAS  Google Scholar 

  26. Warburton, D., S. Gersen, M.-T. Yu, C. Jackson, B. Handelin and D. Housman. 1990. Monochromosomal hybrids from microcell fusion of human lymphoblastiod cells containing a dominant selectable marker. Genomics 6: 358–366.

    Article  PubMed  CAS  Google Scholar 

  27. Weeks, K. M., C. Ampe, S. C. Schultz, T. A. Steitz and D. M. Crothers. 1990. Fragments of the HIV-1 Tat protein specifically bind Tar RNA. Science 249: 1281–1285.

    Article  PubMed  CAS  Google Scholar 

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© 1991 Plenum Press, New York

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Newstein, M., Shank, P.R. (1991). Human-Specific Factors are Required for Tat-Mediated Trans-Activation of the HIV-1 and HIV-2 LTRs. In: Kumar, A. (eds) Advances in Molecular Biology and Targeted Treatment for AIDS. GWUMC Department of Biochemistry Annual Spring Symposia. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-5928-9_7

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  • DOI: https://doi.org/10.1007/978-1-4684-5928-9_7

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4684-5930-2

  • Online ISBN: 978-1-4684-5928-9

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