A single gp120 residue can affect HIV-1 tropism in macaques.
PLoS Pathog
; 13(9): e1006572, 2017 Sep.
Article
en En
| MEDLINE
| ID: mdl-28945790
ABSTRACT
Species-dependent variation in proteins that aid or limit virus replication determines the ability of lentiviruses to jump between host species. Identifying and overcoming these differences facilitates the development of animal models for HIV-1, including models based on chimeric SIVs that express HIV-1 envelope (Env) glycoproteins, (SHIVs) and simian-tropic HIV-1 (stHIV) strains. Here, we demonstrate that the inherently poor ability of most HIV-1 Env proteins to use macaque CD4 as a receptor is improved during adaptation by virus passage in macaques. We identify a single amino acid, A281, in HIV-1 Env that consistently changes during adaptation in macaques and affects the ability of HIV-1 Env to use macaque CD4. Importantly, mutations at A281 do not markedly affect HIV-1 Env neutralization properties. Our findings should facilitate the design of HIV-1 Env proteins for use in non-human primate models and thus expedite the development of clinically relevant reagents for testing interventions against HIV-1.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Proteína gp120 de Envoltorio del VIH
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Infecciones por VIH
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VIH-1
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Tropismo Viral
Tipo de estudio:
Prognostic_studies
Límite:
Animals
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Female
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Humans
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Male
Idioma:
En
Revista:
PLoS Pathog
Año:
2017
Tipo del documento:
Article
País de afiliación:
Estados Unidos