The similarity of simian immunodeficiency virus (SIV) to human immunodeficiency virus (HIV) in genomic organization, genetic sequence and biological properties suggests that SIV systems are highly suitable for study of the mechanisms and determinants of HIV-induced disease. The research described in this application examines molecular determinants of SIV persistence and AIDS pathogenesis. These studies utilize molecularly cloned SIV of defined sequence that has been shown to cause AIDS in rhesus monkeys. Specifically, cloned SIVs with alterations in the nef gene and in the NRE (negative regulatory element) will be tested for their properties in cultured cells and in rhesus monkeys. The role of the nef gene and the NRE in viral persistence, pathogenic potential, cell specificity and disease course will be analyzed. A requirement of nef or NRE for viral persistence and/or pathogenic potential will have important implications for therapy and vacine research. If nef is required for the pathogenic potential of the virus, the nef gene product will become an important target for drug development.

Agency
National Institute of Health (NIH)
Institute
National Institute of Allergy and Infectious Diseases (NIAID)
Type
Research Project (R01)
Project #
2R01AI025328-04
Application #
3138792
Study Section
AIDS and Related Research Study Section 3 (ARRC)
Project Start
1987-09-01
Project End
1995-11-30
Budget Start
1990-12-01
Budget End
1991-11-30
Support Year
4
Fiscal Year
1991
Total Cost
Indirect Cost
Name
Harvard University
Department
Type
Schools of Medicine
DUNS #
082359691
City
Boston
State
MA
Country
United States
Zip Code
02115
Termini, James M; Church, Elizabeth S; Silver, Zachary A et al. (2017) Human Immunodeficiency Virus and Simian Immunodeficiency Virus Maintain High Levels of Infectivity in the Complete Absence of Mucin-Type O-Glycosylation. J Virol 91:
Stansell, Elizabeth; Panico, Maria; Canis, Kevin et al. (2015) Gp120 on HIV-1 Virions Lacks O-Linked Carbohydrate. PLoS One 10:e0124784
Postler, Thomas S; Bixby, Jacqueline G; Desrosiers, Ronald C et al. (2014) Systematic analysis of intracellular trafficking motifs located within the cytoplasmic domain of simian immunodeficiency virus glycoprotein gp41. PLoS One 9:e114753
Westmoreland, Susan V; Converse, A Peter; Hrecka, Kasia et al. (2014) SIV vpx is essential for macrophage infection but not for development of AIDS. PLoS One 9:e84463
Postler, Thomas S; Desrosiers, Ronald C (2012) The cytoplasmic domain of the HIV-1 glycoprotein gp41 induces NF-?B activation through TGF-?-activated kinase 1. Cell Host Microbe 11:181-93
Postler, Thomas S; Martinez-Navio, José M; Yuste, Eloísa et al. (2012) Evidence against extracellular exposure of a highly immunogenic region in the C-terminal domain of the simian immunodeficiency virus gp41 transmembrane protein. J Virol 86:1145-57
Martinez-Navio, Jose M; Desrosiers, Ronald C (2012) Neutralizing capacity of monoclonal antibodies that recognize peptide sequences underlying the carbohydrates on gp41 of simian immunodeficiency virus. J Virol 86:12484-93
Stansell, Elizabeth; Canis, Kevin; Haslam, Stuart M et al. (2011) Simian immunodeficiency virus from the sooty mangabey and rhesus macaque is modified with O-linked carbohydrate. J Virol 85:582-95
Stansell, Elizabeth; Desrosiers, Ronald C (2010) Fundamental difference in the content of high-mannose carbohydrate in the HIV-1 and HIV-2 lineages. J Virol 84:8998-9009
Yuste, Eloisa; Bixby, Jacqueline; Lifson, Jeffrey et al. (2008) Glycosylation of gp41 of simian immunodeficiency virus shields epitopes that can be targets for neutralizing antibodies. J Virol 82:12472-86

Showing the most recent 10 out of 79 publications