Publication Date:
2015-02-25
Description:
Long-term in vivo expression of a broad and potent entry inhibitor could circumvent the need for a conventional vaccine for HIV-1. Adeno-associated virus (AAV) vectors can stably express HIV-1 broadly neutralizing antibodies (bNAbs). However, even the best bNAbs neutralize 10-50% of HIV-1 isolates inefficiently (80% inhibitory concentration (IC80) 〉 5 mug ml(-1)), suggesting that high concentrations of these antibodies would be necessary to achieve general protection. Here we show that eCD4-Ig, a fusion of CD4-Ig with a small CCR5-mimetic sulfopeptide, binds avidly and cooperatively to the HIV-1 envelope glycoprotein (Env) and is more potent than the best bNAbs (geometric mean half-maximum inhibitory concentration (IC50) 〈 0.05 mug ml(-1)). Because eCD4-Ig binds only conserved regions of Env, it is also much broader than any bNAb. For example, eCD4-Ig efficiently neutralized 100% of a diverse panel of neutralization-resistant HIV-1, HIV-2 and simian immunodeficiency virus isolates, including a comprehensive set of isolates resistant to the CD4-binding site bNAbs VRC01, NIH45-46 and 3BNC117. Rhesus macaques inoculated with an AAV vector stably expressed 17-77 mug ml(-1) of fully functional rhesus eCD4-Ig for more than 40 weeks, and these macaques were protected from several infectious challenges with SHIV-AD8. Rhesus eCD4-Ig was also markedly less immunogenic than rhesus forms of four well-characterized bNAbs. Our data suggest that AAV-delivered eCD4-Ig can function like an effective HIV-1 vaccine.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4352131/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉 〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4352131/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gardner, Matthew R -- Kattenhorn, Lisa M -- Kondur, Hema R -- von Schaewen, Markus -- Dorfman, Tatyana -- Chiang, Jessica J -- Haworth, Kevin G -- Decker, Julie M -- Alpert, Michael D -- Bailey, Charles C -- Neale, Ernest S Jr -- Fellinger, Christoph H -- Joshi, Vinita R -- Fuchs, Sebastian P -- Martinez-Navio, Jose M -- Quinlan, Brian D -- Yao, Annie Y -- Mouquet, Hugo -- Gorman, Jason -- Zhang, Baoshan -- Poignard, Pascal -- Nussenzweig, Michel C -- Burton, Dennis R -- Kwong, Peter D -- Piatak, Michael Jr -- Lifson, Jeffrey D -- Gao, Guangping -- Desrosiers, Ronald C -- Evans, David T -- Hahn, Beatrice H -- Ploss, Alexander -- Cannon, Paula M -- Seaman, Michael S -- Farzan, Michael -- HHSN261200800001E/PHS HHS/ -- P01 AI100263/AI/NIAID NIH HHS/ -- P30 AI045008/AI/NIAID NIH HHS/ -- R01 AI058715/AI/NIAID NIH HHS/ -- R01 AI080324/AI/NIAID NIH HHS/ -- R01 AI091476/AI/NIAID NIH HHS/ -- R01 AI095098/AI/NIAID NIH HHS/ -- R01 AI098485/AI/NIAID NIH HHS/ -- RR000168/RR/NCRR NIH HHS/ -- UM1 AI100663/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- Intramural NIH HHS/ -- England -- Nature. 2015 Mar 5;519(7541):87-91. doi: 10.1038/nature14264. Epub 2015 Feb 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Infectious Diseases, The Scripps Research Institute, Jupiter, Florida 33458, USA. ; Department of Comparative Pathology, Harvard Medical School, New England Primate Research Center, Southborough, Massachusetts 01772, USA. ; Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA. ; Department of Molecular Microbiology and Immunology, Keck School of Medicine of the University of Southern California, Los Angeles, California 90033, USA. ; Departments of Medicine and Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; 1] Department of Comparative Pathology, Harvard Medical School, New England Primate Research Center, Southborough, Massachusetts 01772, USA [2] Immunathon Inc., Cambridge, Massachusetts 02141, USA. ; Department of Pathology, University of Miami Miller School of Medicine, Miami, Florida 33136, USA. ; 1] Laboratory of Molecular Immunology, The Rockefeller University, New York, New York 10065, USA [2] Department of Immunology, Institut Pasteur, Paris, 75015, France. ; Vaccine Research Center, National Institutes of Health, Bethesda, Maryland 20892, USA. ; Department of Immunology and Microbial Science, IAVI Neutralizing Antibody Center, and Center for HIV/AIDS Vaccine Immunology and Immunogen Discovery, The Scripps Research Institute, La Jolla, California 92037, USA. ; 1] Laboratory of Molecular Immunology, The Rockefeller University, New York, New York 10065, USA [2] Howard Hughes Medical Institute, New York, New York 10065, USA. ; 1] Department of Immunology and Microbial Science, IAVI Neutralizing Antibody Center, and Center for HIV/AIDS Vaccine Immunology and Immunogen Discovery, The Scripps Research Institute, La Jolla, California 92037, USA [2] Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts 02139, USA. ; AIDS and Cancer Virus Program, Leidos Biomedical Research, Incorporated, Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, USA. ; Gene Therapy Center, University of Massachusetts Medical School, Worcester, Massachusetts 01655, USA. ; 1] Department of Comparative Pathology, Harvard Medical School, New England Primate Research Center, Southborough, Massachusetts 01772, USA [2] Department of Pathology, University of Miami Miller School of Medicine, Miami, Florida 33136, USA. ; Department of Pathology and Laboratory Medicine, University of Wisconsin, Madison, Wisconsin 53711, USA. ; Beth Israel Deaconess Medical Center, Boston, Massachusetts 02215, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25707797" target="_blank"〉PubMed〈/a〉
Keywords:
AIDS Vaccines/genetics/immunology
;
Animals
;
Antibodies, Neutralizing/immunology
;
Antigens, CD4/genetics/*immunology
;
CCR5 Receptor Antagonists/immunology
;
Dependovirus/*genetics
;
Female
;
Genetic Therapy
;
HIV Antibodies/immunology
;
HIV-1/immunology
;
HIV-2/immunology
;
Immunoglobulins/genetics/*immunology
;
Macaca mulatta
;
Male
;
Neutralization Tests
;
Receptors, CCR5/metabolism
;
Simian Acquired Immunodeficiency Syndrome/*immunology/*prevention &
;
control/virology
;
Simian Immunodeficiency Virus/*immunology
;
*Virus Internalization
Print ISSN:
0028-0836
Electronic ISSN:
1476-4687
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Permalink
