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. 1993 Jul;67(7):3978–3988. doi: 10.1128/jvi.67.7.3978-3988.1993

Characterization of conserved human immunodeficiency virus type 1 gp120 neutralization epitopes exposed upon gp120-CD4 binding.

M Thali 1, J P Moore 1, C Furman 1, M Charles 1, D D Ho 1, J Robinson 1, J Sodroski 1
PMCID: PMC237765  PMID: 7685405

Abstract

Interaction with the CD4 receptor enhances the exposure on the human immunodeficiency type 1 gp120 exterior envelope glycoprotein of conserved, conformation-dependent epitopes recognized by the 17b and 48d neutralizing monoclonal antibodies. The 17b and 48d antibodies compete with anti-CD4 binding antibodies such as 15e or 21h, which recognize discontinuous gp120 sequences near the CD4 binding region. To characterize the 17b and 48d epitopes, a panel of human immunodeficiency virus type 1 gp120 mutants was tested for recognition by these antibodies in the absence or presence of soluble CD4. Single amino acid changes in five discontinuous, conserved, and generally hydrophobic regions of the gp120 glycoprotein resulted in decreased recognition and neutralization by the 17b and 48d antibodies. Some of these regions overlap those previously shown to be important for binding of the 15e and 21h antibodies or for CD4 binding. These results suggest that discontinuous, conserved epitopes proximal to the binding sites for both CD4 and anti-CD4 binding antibodies become better exposed upon CD4 binding and can serve as targets for neutralizing antibodies.

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Selected References

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  1. Akerblom L., Hinkula J., Broliden P. A., Mäkitalo B., Fridberger T., Rosen J., Villacres-Eriksson M., Morein B., Wahren B. Neutralizing cross-reactive and non-neutralizing monoclonal antibodies to HIV-1 gp120. AIDS. 1990 Oct;4(10):953–960. doi: 10.1097/00002030-199010000-00002. [DOI] [PubMed] [Google Scholar]
  2. Allan J. S., Coligan J. E., Barin F., McLane M. F., Sodroski J. G., Rosen C. A., Haseltine W. A., Lee T. H., Essex M. Major glycoprotein antigens that induce antibodies in AIDS patients are encoded by HTLV-III. Science. 1985 May 31;228(4703):1091–1094. doi: 10.1126/science.2986290. [DOI] [PubMed] [Google Scholar]
  3. Allan J. S. Receptor-mediated activation of immunodeficiency viruses in viral fusion. Science. 1991 May 31;252(5010):1322–1323. doi: 10.1126/science.1925547. [DOI] [PubMed] [Google Scholar]
  4. Allan J. S. Receptor-mediated activation of immunodeficiency viruses in viral fusion. Science. 1991 May 31;252(5010):1322–1323. doi: 10.1126/science.1925547. [DOI] [PubMed] [Google Scholar]
  5. Barré-Sinoussi F., Chermann J. C., Rey F., Nugeyre M. T., Chamaret S., Gruest J., Dauguet C., Axler-Blin C., Vézinet-Brun F., Rouzioux C. Isolation of a T-lymphotropic retrovirus from a patient at risk for acquired immune deficiency syndrome (AIDS). Science. 1983 May 20;220(4599):868–871. doi: 10.1126/science.6189183. [DOI] [PubMed] [Google Scholar]
  6. Berger E. A., Fuerst T. R., Moss B. A soluble recombinant polypeptide comprising the amino-terminal half of the extracellular region of the CD4 molecule contains an active binding site for human immunodeficiency virus. Proc Natl Acad Sci U S A. 1988 Apr;85(7):2357–2361. doi: 10.1073/pnas.85.7.2357. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Berkower I., Smith G. E., Giri C., Murphy D. Human immunodeficiency virus 1. Predominance of a group-specific neutralizing epitope that persists despite genetic variation. J Exp Med. 1989 Nov 1;170(5):1681–1695. doi: 10.1084/jem.170.5.1681. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Berman P. W., Gregory T. J., Riddle L., Nakamura G. R., Champe M. A., Porter J. P., Wurm F. M., Hershberg R. D., Cobb E. K., Eichberg J. W. Protection of chimpanzees from infection by HIV-1 after vaccination with recombinant glycoprotein gp120 but not gp160. Nature. 1990 Jun 14;345(6276):622–625. doi: 10.1038/345622a0. [DOI] [PubMed] [Google Scholar]
  9. Buchbinder A., Karwowska S., Gorny M. K., Burda S. T., Zolla-Pazner S. Synergy between human monoclonal antibodies to HIV extends their effective biologic activity against homologous and divergent strains. AIDS Res Hum Retroviruses. 1992 Apr;8(4):425–427. doi: 10.1089/aid.1992.8.425. [DOI] [PubMed] [Google Scholar]
  10. Clements G. J., Price-Jones M. J., Stephens P. E., Sutton C., Schulz T. F., Clapham P. R., McKeating J. A., McClure M. O., Thomson S., Marsh M. The V3 loops of the HIV-1 and HIV-2 surface glycoproteins contain proteolytic cleavage sites: a possible function in viral fusion? AIDS Res Hum Retroviruses. 1991 Jan;7(1):3–16. doi: 10.1089/aid.1991.7.3. [DOI] [PubMed] [Google Scholar]
  11. Cordonnier A., Montagnier L., Emerman M. Single amino-acid changes in HIV envelope affect viral tropism and receptor binding. Nature. 1989 Aug 17;340(6234):571–574. doi: 10.1038/340571a0. [DOI] [PubMed] [Google Scholar]
  12. Dalgleish A. G., Beverley P. C., Clapham P. R., Crawford D. H., Greaves M. F., Weiss R. A. The CD4 (T4) antigen is an essential component of the receptor for the AIDS retrovirus. Nature. 1984 Dec 20;312(5996):763–767. doi: 10.1038/312763a0. [DOI] [PubMed] [Google Scholar]
  13. Deen K. C., McDougal J. S., Inacker R., Folena-Wasserman G., Arthos J., Rosenberg J., Maddon P. J., Axel R., Sweet R. W. A soluble form of CD4 (T4) protein inhibits AIDS virus infection. Nature. 1988 Jan 7;331(6151):82–84. doi: 10.1038/331082a0. [DOI] [PubMed] [Google Scholar]
  14. Earl P. L., Moss B., Doms R. W. Folding, interaction with GRP78-BiP, assembly, and transport of the human immunodeficiency virus type 1 envelope protein. J Virol. 1991 Apr;65(4):2047–2055. doi: 10.1128/jvi.65.4.2047-2055.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Einfeld D., Hunter E. Transport of membrane proteins to the cell surface. Curr Top Microbiol Immunol. 1991;170:107–139. doi: 10.1007/978-3-642-76389-2_4. [DOI] [PubMed] [Google Scholar]
  16. Emini E. A., Nara P. L., Schleif W. A., Lewis J. A., Davide J. P., Lee D. R., Kessler J., Conley S., Matsushita S., Putney S. D. Antibody-mediated in vitro neutralization of human immunodeficiency virus type 1 abolishes infectivity for chimpanzees. J Virol. 1990 Aug;64(8):3674–3678. doi: 10.1128/jvi.64.8.3674-3678.1990. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Emini E. A., Schleif W. A., Nunberg J. H., Conley A. J., Eda Y., Tokiyoshi S., Putney S. D., Matsushita S., Cobb K. E., Jett C. M. Prevention of HIV-1 infection in chimpanzees by gp120 V3 domain-specific monoclonal antibody. Nature. 1992 Feb 20;355(6362):728–730. doi: 10.1038/355728a0. [DOI] [PubMed] [Google Scholar]
  18. Fauci A. S., Macher A. M., Longo D. L., Lane H. C., Rook A. H., Masur H., Gelmann E. P. NIH conference. Acquired immunodeficiency syndrome: epidemiologic, clinical, immunologic, and therapeutic considerations. Ann Intern Med. 1984 Jan;100(1):92–106. doi: 10.7326/0003-4819-100-1-92. [DOI] [PubMed] [Google Scholar]
  19. Fisher R. A., Bertonis J. M., Meier W., Johnson V. A., Costopoulos D. S., Liu T., Tizard R., Walker B. D., Hirsch M. S., Schooley R. T. HIV infection is blocked in vitro by recombinant soluble CD4. Nature. 1988 Jan 7;331(6151):76–78. doi: 10.1038/331076a0. [DOI] [PubMed] [Google Scholar]
  20. Freed E. O., Myers D. J., Risser R. Characterization of the fusion domain of the human immunodeficiency virus type 1 envelope glycoprotein gp41. Proc Natl Acad Sci U S A. 1990 Jun;87(12):4650–4654. doi: 10.1073/pnas.87.12.4650. [DOI] [PMC free article] [PubMed] [Google Scholar]
  21. Freed E. O., Myers D. J., Risser R. Identification of the principal neutralizing determinant of human immunodeficiency virus type 1 as a fusion domain. J Virol. 1991 Jan;65(1):190–194. doi: 10.1128/jvi.65.1.190-194.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  22. Gallo R. C., Salahuddin S. Z., Popovic M., Shearer G. M., Kaplan M., Haynes B. F., Palker T. J., Redfield R., Oleske J., Safai B. Frequent detection and isolation of cytopathic retroviruses (HTLV-III) from patients with AIDS and at risk for AIDS. Science. 1984 May 4;224(4648):500–503. doi: 10.1126/science.6200936. [DOI] [PubMed] [Google Scholar]
  23. Girard M., Kieny M. P., Pinter A., Barre-Sinoussi F., Nara P., Kolbe H., Kusumi K., Chaput A., Reinhart T., Muchmore E. Immunization of chimpanzees confers protection against challenge with human immunodeficiency virus. Proc Natl Acad Sci U S A. 1991 Jan 15;88(2):542–546. doi: 10.1073/pnas.88.2.542. [DOI] [PMC free article] [PubMed] [Google Scholar]
  24. Gorny M. K., Conley A. J., Karwowska S., Buchbinder A., Xu J. Y., Emini E. A., Koenig S., Zolla-Pazner S. Neutralization of diverse human immunodeficiency virus type 1 variants by an anti-V3 human monoclonal antibody. J Virol. 1992 Dec;66(12):7538–7542. doi: 10.1128/jvi.66.12.7538-7542.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]
  25. Grimaila R. J., Fuller B. A., Rennert P. D., Nelson M. B., Hammarskjöld M. L., Potts B., Murray M., Putney S. D., Gray G. Mutations in the principal neutralization determinant of human immunodeficiency virus type 1 affect syncytium formation, virus infectivity, growth kinetics, and neutralization. J Virol. 1992 Apr;66(4):1875–1883. doi: 10.1128/jvi.66.4.1875-1883.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]
  26. Haigwood N. L., Nara P. L., Brooks E., Van Nest G. A., Ott G., Higgins K. W., Dunlop N., Scandella C. J., Eichberg J. W., Steimer K. S. Native but not denatured recombinant human immunodeficiency virus type 1 gp120 generates broad-spectrum neutralizing antibodies in baboons. J Virol. 1992 Jan;66(1):172–182. doi: 10.1128/jvi.66.1.172-182.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]
  27. Hart T. K., Kirsh R., Ellens H., Sweet R. W., Lambert D. M., Petteway S. R., Jr, Leary J., Bugelski P. J. Binding of soluble CD4 proteins to human immunodeficiency virus type 1 and infected cells induces release of envelope glycoprotein gp120. Proc Natl Acad Sci U S A. 1991 Mar 15;88(6):2189–2193. doi: 10.1073/pnas.88.6.2189. [DOI] [PMC free article] [PubMed] [Google Scholar]
  28. Helseth E., Kowalski M., Gabuzda D., Olshevsky U., Haseltine W., Sodroski J. Rapid complementation assays measuring replicative potential of human immunodeficiency virus type 1 envelope glycoprotein mutants. J Virol. 1990 May;64(5):2416–2420. doi: 10.1128/jvi.64.5.2416-2420.1990. [DOI] [PMC free article] [PubMed] [Google Scholar]
  29. Helseth E., Olshevsky U., Furman C., Sodroski J. Human immunodeficiency virus type 1 gp120 envelope glycoprotein regions important for association with the gp41 transmembrane glycoprotein. J Virol. 1991 Apr;65(4):2119–2123. doi: 10.1128/jvi.65.4.2119-2123.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  30. Helseth E., Olshevsky U., Gabuzda D., Ardman B., Haseltine W., Sodroski J. Changes in the transmembrane region of the human immunodeficiency virus type 1 gp41 envelope glycoprotein affect membrane fusion. J Virol. 1990 Dec;64(12):6314–6318. doi: 10.1128/jvi.64.12.6314-6318.1990. [DOI] [PMC free article] [PubMed] [Google Scholar]
  31. Ho D. D., McKeating J. A., Li X. L., Moudgil T., Daar E. S., Sun N. C., Robinson J. E. Conformational epitope on gp120 important in CD4 binding and human immunodeficiency virus type 1 neutralization identified by a human monoclonal antibody. J Virol. 1991 Jan;65(1):489–493. doi: 10.1128/jvi.65.1.489-493.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  32. Hussey R. E., Richardson N. E., Kowalski M., Brown N. R., Chang H. C., Siliciano R. F., Dorfman T., Walker B., Sodroski J., Reinherz E. L. A soluble CD4 protein selectively inhibits HIV replication and syncytium formation. Nature. 1988 Jan 7;331(6151):78–81. doi: 10.1038/331078a0. [DOI] [PubMed] [Google Scholar]
  33. Ivanoff L. A., Looney D. J., McDanal C., Morris J. F., Wong-Staal F., Langlois A. J., Petteway S. R., Jr, Matthews T. J. Alteration of HIV-1 infectivity and neutralization by a single amino acid replacement in the V3 loop domain. AIDS Res Hum Retroviruses. 1991 Jul;7(7):595–603. doi: 10.1089/aid.1991.7.595. [DOI] [PubMed] [Google Scholar]
  34. Javaherian K., Langlois A. J., LaRosa G. J., Profy A. T., Bolognesi D. P., Herlihy W. C., Putney S. D., Matthews T. J. Broadly neutralizing antibodies elicited by the hypervariable neutralizing determinant of HIV-1. Science. 1990 Dec 14;250(4987):1590–1593. doi: 10.1126/science.1703322. [DOI] [PubMed] [Google Scholar]
  35. Javaherian K., Langlois A. J., McDanal C., Ross K. L., Eckler L. I., Jellis C. L., Profy A. T., Rusche J. R., Bolognesi D. P., Putney S. D. Principal neutralizing domain of the human immunodeficiency virus type 1 envelope protein. Proc Natl Acad Sci U S A. 1989 Sep;86(17):6768–6772. doi: 10.1073/pnas.86.17.6768. [DOI] [PMC free article] [PubMed] [Google Scholar]
  36. Kang C. Y., Nara P., Chamat S., Caralli V., Ryskamp T., Haigwood N., Newman R., Köhler H. Evidence for non-V3-specific neutralizing antibodies that interfere with gp120/CD4 binding in human immunodeficiency virus 1-infected humans. Proc Natl Acad Sci U S A. 1991 Jul 15;88(14):6171–6175. doi: 10.1073/pnas.88.14.6171. [DOI] [PMC free article] [PubMed] [Google Scholar]
  37. Karwowska S., Gorny M. K., Buchbinder A., Gianakakos V., Williams C., Fuerst T., Zolla-Pazner S. Production of human monoclonal antibodies specific for conformational and linear non-V3 epitopes of gp120. AIDS Res Hum Retroviruses. 1992 Jun;8(6):1099–1106. doi: 10.1089/aid.1992.8.1099. [DOI] [PubMed] [Google Scholar]
  38. Klatzmann D., Champagne E., Chamaret S., Gruest J., Guetard D., Hercend T., Gluckman J. C., Montagnier L. T-lymphocyte T4 molecule behaves as the receptor for human retrovirus LAV. Nature. 1984 Dec 20;312(5996):767–768. doi: 10.1038/312767a0. [DOI] [PubMed] [Google Scholar]
  39. Kowalski M., Bergeron L., Dorfman T., Haseltine W., Sodroski J. Attenuation of human immunodeficiency virus type 1 cytopathic effect by a mutation affecting the transmembrane envelope glycoprotein. J Virol. 1991 Jan;65(1):281–291. doi: 10.1128/jvi.65.1.281-291.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  40. Kowalski M., Potz J., Basiripour L., Dorfman T., Goh W. C., Terwilliger E., Dayton A., Rosen C., Haseltine W., Sodroski J. Functional regions of the envelope glycoprotein of human immunodeficiency virus type 1. Science. 1987 Sep 11;237(4820):1351–1355. doi: 10.1126/science.3629244. [DOI] [PubMed] [Google Scholar]
  41. LaRosa G. J., Davide J. P., Weinhold K., Waterbury J. A., Profy A. T., Lewis J. A., Langlois A. J., Dreesman G. R., Boswell R. N., Shadduck P. Conserved sequence and structural elements in the HIV-1 principal neutralizing determinant. Science. 1990 Aug 24;249(4971):932–935. doi: 10.1126/science.2392685. [DOI] [PubMed] [Google Scholar]
  42. Lane H. C., Depper J. M., Greene W. C., Whalen G., Waldmann T. A., Fauci A. S. Qualitative analysis of immune function in patients with the acquired immunodeficiency syndrome. Evidence for a selective defect in soluble antigen recognition. N Engl J Med. 1985 Jul 11;313(2):79–84. doi: 10.1056/NEJM198507113130204. [DOI] [PubMed] [Google Scholar]
  43. Lasky L. A., Nakamura G., Smith D. H., Fennie C., Shimasaki C., Patzer E., Berman P., Gregory T., Capon D. J. Delineation of a region of the human immunodeficiency virus type 1 gp120 glycoprotein critical for interaction with the CD4 receptor. Cell. 1987 Sep 11;50(6):975–985. doi: 10.1016/0092-8674(87)90524-1. [DOI] [PubMed] [Google Scholar]
  44. Leonard C. K., Spellman M. W., Riddle L., Harris R. J., Thomas J. N., Gregory T. J. Assignment of intrachain disulfide bonds and characterization of potential glycosylation sites of the type 1 recombinant human immunodeficiency virus envelope glycoprotein (gp120) expressed in Chinese hamster ovary cells. J Biol Chem. 1990 Jun 25;265(18):10373–10382. [PubMed] [Google Scholar]
  45. Linsley P. S., Ledbetter J. A., Kinney-Thomas E., Hu S. L. Effects of anti-gp120 monoclonal antibodies on CD4 receptor binding by the env protein of human immunodeficiency virus type 1. J Virol. 1988 Oct;62(10):3695–3702. doi: 10.1128/jvi.62.10.3695-3702.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
  46. Maddon P. J., Dalgleish A. G., McDougal J. S., Clapham P. R., Weiss R. A., Axel R. The T4 gene encodes the AIDS virus receptor and is expressed in the immune system and the brain. Cell. 1986 Nov 7;47(3):333–348. doi: 10.1016/0092-8674(86)90590-8. [DOI] [PubMed] [Google Scholar]
  47. Matsushita S., Robert-Guroff M., Rusche J., Koito A., Hattori T., Hoshino H., Javaherian K., Takatsuki K., Putney S. Characterization of a human immunodeficiency virus neutralizing monoclonal antibody and mapping of the neutralizing epitope. J Virol. 1988 Jun;62(6):2107–2114. doi: 10.1128/jvi.62.6.2107-2114.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
  48. Matthews T. J., Langlois A. J., Robey W. G., Chang N. T., Gallo R. C., Fischinger P. J., Bolognesi D. P. Restricted neutralization of divergent human T-lymphotropic virus type III isolates by antibodies to the major envelope glycoprotein. Proc Natl Acad Sci U S A. 1986 Dec;83(24):9709–9713. doi: 10.1073/pnas.83.24.9709. [DOI] [PMC free article] [PubMed] [Google Scholar]
  49. McDougal J. S., Kennedy M. S., Sligh J. M., Cort S. P., Mawle A., Nicholson J. K. Binding of HTLV-III/LAV to T4+ T cells by a complex of the 110K viral protein and the T4 molecule. Science. 1986 Jan 24;231(4736):382–385. doi: 10.1126/science.3001934. [DOI] [PubMed] [Google Scholar]
  50. McKeating J. A., Gow J., Goudsmit J., Pearl L. H., Mulder C., Weiss R. A. Characterization of HIV-1 neutralization escape mutants. AIDS. 1989 Dec;3(12):777–784. doi: 10.1097/00002030-198912000-00001. [DOI] [PubMed] [Google Scholar]
  51. McKeating J. A., Thali M., Furman C., Karwowska S., Gorny M. K., Cordell J., Zolla-Pazner S., Sodroski J., Weiss R. A. Amino acid residues of the human immunodeficiency virus type I gp120 critical for the binding of rat and human neutralizing antibodies that block the gp120-sCD4 interaction. Virology. 1992 Sep;190(1):134–142. doi: 10.1016/0042-6822(92)91199-5. [DOI] [PubMed] [Google Scholar]
  52. Moore J. P., Ho D. D. Antibodies to discontinuous or conformationally sensitive epitopes on the gp120 glycoprotein of human immunodeficiency virus type 1 are highly prevalent in sera of infected humans. J Virol. 1993 Feb;67(2):863–875. doi: 10.1128/jvi.67.2.863-875.1993. [DOI] [PMC free article] [PubMed] [Google Scholar]
  53. Moore J. P., Klasse P. J. Thermodynamic and kinetic analysis of sCD4 binding to HIV-1 virions and of gp120 dissociation. AIDS Res Hum Retroviruses. 1992 Apr;8(4):443–450. doi: 10.1089/aid.1992.8.443. [DOI] [PubMed] [Google Scholar]
  54. Moore J. P. Simple methods for monitoring HIV-1 and HIV-2 gp120 binding to soluble CD4 by enzyme-linked immunosorbent assay: HIV-2 has a 25-fold lower affinity than HIV-1 for soluble CD4. AIDS. 1990 Apr;4(4):297–305. doi: 10.1097/00002030-199004000-00003. [DOI] [PubMed] [Google Scholar]
  55. Nara P. L., Robey W. G., Arthur L. O., Asher D. M., Wolff A. V., Gibbs C. J., Jr, Gajdusek D. C., Fischinger P. J. Persistent infection of chimpanzees with human immunodeficiency virus: serological responses and properties of reisolated viruses. J Virol. 1987 Oct;61(10):3173–3180. doi: 10.1128/jvi.61.10.3173-3180.1987. [DOI] [PMC free article] [PubMed] [Google Scholar]
  56. Nara P. L., Robey W. G., Pyle S. W., Hatch W. C., Dunlop N. M., Bess J. W., Jr, Kelliher J. C., Arthur L. O., Fischinger P. J. Purified envelope glycoproteins from human immunodeficiency virus type 1 variants induce individual, type-specific neutralizing antibodies. J Virol. 1988 Aug;62(8):2622–2628. doi: 10.1128/jvi.62.8.2622-2628.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
  57. Nara P. L., Smit L., Dunlop N., Hatch W., Merges M., Waters D., Kelliher J., Gallo R. C., Fischinger P. J., Goudsmit J. Emergence of viruses resistant to neutralization by V3-specific antibodies in experimental human immunodeficiency virus type 1 IIIB infection of chimpanzees. J Virol. 1990 Aug;64(8):3779–3791. doi: 10.1128/jvi.64.8.3779-3791.1990. [DOI] [PMC free article] [PubMed] [Google Scholar]
  58. Ohno T., Terada M., Yoneda Y., Shea K. W., Chambers R. F., Stroka D. M., Nakamura M., Kufe D. W. A broadly neutralizing monoclonal antibody that recognizes the V3 region of human immunodeficiency virus type 1 glycoprotein gp120. Proc Natl Acad Sci U S A. 1991 Dec 1;88(23):10726–10729. doi: 10.1073/pnas.88.23.10726. [DOI] [PMC free article] [PubMed] [Google Scholar]
  59. Olshevsky U., Helseth E., Furman C., Li J., Haseltine W., Sodroski J. Identification of individual human immunodeficiency virus type 1 gp120 amino acids important for CD4 receptor binding. J Virol. 1990 Dec;64(12):5701–5707. doi: 10.1128/jvi.64.12.5701-5707.1990. [DOI] [PMC free article] [PubMed] [Google Scholar]
  60. Page K. A., Stearns S. M., Littman D. R. Analysis of mutations in the V3 domain of gp160 that affect fusion and infectivity. J Virol. 1992 Jan;66(1):524–533. doi: 10.1128/jvi.66.1.524-533.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]
  61. Palker T. J., Clark M. E., Langlois A. J., Matthews T. J., Weinhold K. J., Randall R. R., Bolognesi D. P., Haynes B. F. Type-specific neutralization of the human immunodeficiency virus with antibodies to env-encoded synthetic peptides. Proc Natl Acad Sci U S A. 1988 Mar;85(6):1932–1936. doi: 10.1073/pnas.85.6.1932. [DOI] [PMC free article] [PubMed] [Google Scholar]
  62. Posner M. R., Hideshima T., Cannon T., Mukherjee M., Mayer K. H., Byrn R. A. An IgG human monoclonal antibody that reacts with HIV-1/GP120, inhibits virus binding to cells, and neutralizes infection. J Immunol. 1991 Jun 15;146(12):4325–4332. [PubMed] [Google Scholar]
  63. Profy A. T., Salinas P. A., Eckler L. I., Dunlop N. M., Nara P. L., Putney S. D. Epitopes recognized by the neutralizing antibodies of an HIV-1-infected individual. J Immunol. 1990 Jun 15;144(12):4641–4647. [PubMed] [Google Scholar]
  64. Putney S. D., Matthews T. J., Robey W. G., Lynn D. L., Robert-Guroff M., Mueller W. T., Langlois A. J., Ghrayeb J., Petteway S. R., Jr, Weinhold K. J. HTLV-III/LAV-neutralizing antibodies to an E. coli-produced fragment of the virus envelope. Science. 1986 Dec 12;234(4782):1392–1395. doi: 10.1126/science.2431482. [DOI] [PubMed] [Google Scholar]
  65. Robey W. G., Arthur L. O., Matthews T. J., Langlois A., Copeland T. D., Lerche N. W., Oroszlan S., Bolognesi D. P., Gilden R. V., Fischinger P. J. Prospect for prevention of human immunodeficiency virus infection: purified 120-kDa envelope glycoprotein induces neutralizing antibody. Proc Natl Acad Sci U S A. 1986 Sep;83(18):7023–7027. doi: 10.1073/pnas.83.18.7023. [DOI] [PMC free article] [PubMed] [Google Scholar]
  66. Robey W. G., Safai B., Oroszlan S., Arthur L. O., Gonda M. A., Gallo R. C., Fischinger P. J. Characterization of envelope and core structural gene products of HTLV-III with sera from AIDS patients. Science. 1985 May 3;228(4699):593–595. doi: 10.1126/science.2984774. [DOI] [PubMed] [Google Scholar]
  67. Robinson J. E., Holton D., Pacheco-Morell S., Liu J., McMurdo H. Identification of conserved and variant epitopes of human immunodeficiency virus type 1 (HIV-1) gp120 by human monoclonal antibodies produced by EBV-transformed cell lines. AIDS Res Hum Retroviruses. 1990 May;6(5):567–579. doi: 10.1089/aid.1990.6.567. [DOI] [PubMed] [Google Scholar]
  68. Rusche J. R., Javaherian K., McDanal C., Petro J., Lynn D. L., Grimaila R., Langlois A., Gallo R. C., Arthur L. O., Fischinger P. J. Antibodies that inhibit fusion of human immunodeficiency virus-infected cells bind a 24-amino acid sequence of the viral envelope, gp120. Proc Natl Acad Sci U S A. 1988 May;85(9):3198–3202. doi: 10.1073/pnas.85.9.3198. [DOI] [PMC free article] [PubMed] [Google Scholar]
  69. Sattentau Q. J., Moore J. P. Conformational changes induced in the human immunodeficiency virus envelope glycoprotein by soluble CD4 binding. J Exp Med. 1991 Aug 1;174(2):407–415. doi: 10.1084/jem.174.2.407. [DOI] [PMC free article] [PubMed] [Google Scholar]
  70. Skinner M. A., Langlois A. J., McDanal C. B., McDougal J. S., Bolognesi D. P., Matthews T. J. Neutralizing antibodies to an immunodominant envelope sequence do not prevent gp120 binding to CD4. J Virol. 1988 Nov;62(11):4195–4200. doi: 10.1128/jvi.62.11.4195-4200.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
  71. Skinner M. A., Ting R., Langlois A. J., Weinhold K. J., Lyerly H. K., Javaherian K., Matthews T. J. Characteristics of a neutralizing monoclonal antibody to the HIV envelope glycoprotein. AIDS Res Hum Retroviruses. 1988 Jun;4(3):187–197. doi: 10.1089/aid.1988.4.187. [DOI] [PubMed] [Google Scholar]
  72. Smith D. H., Byrn R. A., Marsters S. A., Gregory T., Groopman J. E., Capon D. J. Blocking of HIV-1 infectivity by a soluble, secreted form of the CD4 antigen. Science. 1987 Dec 18;238(4834):1704–1707. doi: 10.1126/science.3500514. [DOI] [PubMed] [Google Scholar]
  73. Steimer K. S., Scandella C. J., Skiles P. V., Haigwood N. L. Neutralization of divergent HIV-1 isolates by conformation-dependent human antibodies to Gp120. Science. 1991 Oct 4;254(5028):105–108. doi: 10.1126/science.1718036. [DOI] [PubMed] [Google Scholar]
  74. Stein B. S., Gowda S. D., Lifson J. D., Penhallow R. C., Bensch K. G., Engleman E. G. pH-independent HIV entry into CD4-positive T cells via virus envelope fusion to the plasma membrane. Cell. 1987 Jun 5;49(5):659–668. doi: 10.1016/0092-8674(87)90542-3. [DOI] [PubMed] [Google Scholar]
  75. Sun N. C., Ho D. D., Sun C. R., Liou R. S., Gordon W., Fung M. S., Li X. L., Ting R. C., Lee T. H., Chang N. T. Generation and characterization of monoclonal antibodies to the putative CD4-binding domain of human immunodeficiency virus type 1 gp120. J Virol. 1989 Sep;63(9):3579–3585. doi: 10.1128/jvi.63.9.3579-3585.1989. [DOI] [PMC free article] [PubMed] [Google Scholar]
  76. Thali M., Furman C., Helseth E., Repke H., Sodroski J. Lack of correlation between soluble CD4-induced shedding of the human immunodeficiency virus type 1 exterior envelope glycoprotein and subsequent membrane fusion events. J Virol. 1992 Sep;66(9):5516–5524. doi: 10.1128/jvi.66.9.5516-5524.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]
  77. Thali M., Furman C., Ho D. D., Robinson J., Tilley S., Pinter A., Sodroski J. Discontinuous, conserved neutralization epitopes overlapping the CD4-binding region of human immunodeficiency virus type 1 gp120 envelope glycoprotein. J Virol. 1992 Sep;66(9):5635–5641. doi: 10.1128/jvi.66.9.5635-5641.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]
  78. Thali M., Furman C., Wahren B., Posner M., Ho D. D., Robinson J., Sodroski J. Cooperativity of neutralizing antibodies directed against the V3 and CD4 binding regions of the human immunodeficiency virus gp120 envelope glycoprotein. J Acquir Immune Defic Syndr. 1992;5(6):591–599. [PubMed] [Google Scholar]
  79. Thali M., Olshevsky U., Furman C., Gabuzda D., Posner M., Sodroski J. Characterization of a discontinuous human immunodeficiency virus type 1 gp120 epitope recognized by a broadly reactive neutralizing human monoclonal antibody. J Virol. 1991 Nov;65(11):6188–6193. doi: 10.1128/jvi.65.11.6188-6193.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  80. Tilley S. A., Honnen W. J., Racho M. E., Chou T. C., Pinter A. Synergistic neutralization of HIV-1 by human monoclonal antibodies against the V3 loop and the CD4-binding site of gp120. AIDS Res Hum Retroviruses. 1992 Apr;8(4):461–467. doi: 10.1089/aid.1992.8.461. [DOI] [PubMed] [Google Scholar]
  81. Tilley S. A., Honnen W. J., Racho M. E., Hilgartner M., Pinter A. A human monoclonal antibody against the CD4-binding site of HIV1 gp120 exhibits potent, broadly neutralizing activity. Res Virol. 1991 Jul-Aug;142(4):247–259. doi: 10.1016/0923-2516(91)90010-z. [DOI] [PubMed] [Google Scholar]
  82. Traunecker A., Lüke W., Karjalainen K. Soluble CD4 molecules neutralize human immunodeficiency virus type 1. Nature. 1988 Jan 7;331(6151):84–86. doi: 10.1038/331084a0. [DOI] [PubMed] [Google Scholar]
  83. Travis B. M., Dykers T. I., Hewgill D., Ledbetter J., Tsu T. T., Hu S. L., Lewis J. B. Functional roles of the V3 hypervariable region of HIV-1 gp160 in the processing of gp160 and in the formation of syncytia in CD4+ cells. Virology. 1992 Jan;186(1):313–317. doi: 10.1016/0042-6822(92)90088-7. [DOI] [PubMed] [Google Scholar]
  84. Von Gegerfelt A., Albert J., Morfeldt-Månson L., Broliden K., Fenyö E. M. Isolate-specific neutralizing antibodies in patients with progressive HIV-1-related disease. Virology. 1991 Nov;185(1):162–168. doi: 10.1016/0042-6822(91)90764-3. [DOI] [PubMed] [Google Scholar]
  85. Weiss R. A., Clapham P. R., Weber J. N., Dalgleish A. G., Lasky L. A., Berman P. W. Variable and conserved neutralization antigens of human immunodeficiency virus. Nature. 1986 Dec 11;324(6097):572–575. doi: 10.1038/324572a0. [DOI] [PubMed] [Google Scholar]
  86. Wyatt R., Thali M., Tilley S., Pinter A., Posner M., Ho D., Robinson J., Sodroski J. Relationship of the human immunodeficiency virus type 1 gp120 third variable loop to a component of the CD4 binding site in the fourth conserved region. J Virol. 1992 Dec;66(12):6997–7004. doi: 10.1128/jvi.66.12.6997-7004.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]

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