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Assessment of Immunologically Relevant Dynamic Tertiary Structural Features of the HIV-1 V3 Loop Crown R2 Sequence by ab initio Folding
Published on: September 16, 2010
Relación de la evolución del fenotipo del VIH-1 con la configuración de la envolvente V2
M Groenink1, R A Fouchier, S Broersen
1Department of Clinical Viro-Immunology, Central Laboratory of the Netherlands Red Cross Blood Transfusion Service, Amsterdam.
Science (New York, N.Y.)
|June 4, 1993
Resumen
La variabilidad del virus de la inmunodeficiencia humana tipo 1 (VIH-1) influye en la progresión del SIDA. La identificación de cambios específicos en la envoltura viral puede predecir la aparición del VIH-1 inducido por el sincito (SI), lo que ayuda al monitoreo clínico temprano.
Área de la Ciencia:
- Virología Virología.
- Inmunología Inmunología.
- Biología Molecular Biología Molecular
Sus antecedentes:
- La variabilidad biológica en el virus de la inmunodeficiencia humana tipo 1 (VIH-1) juega un papel crítico en la patogénesis del síndrome de inmunodeficiencia adquirida (SIDA).
- Las variantes del VIH-1 que inducen el sincito (SI) surgen en aproximadamente el 50% de los individuos infectados, lo que se correlaciona con la pérdida acelerada de células T CD4 + y la progresión rápida de la enfermedad.
Objetivo del estudio:
- Investigar los determinantes virales asociados con la aparición de las variantes del VIH-1 que inducen el sincito (SI).
- Para identificar marcadores predictivos para la evolución del fenotipo del VIH-1 durante la infección.
Principales métodos:
- Análisis de las regiones V1 a V2 y V3 de la envoltura viral glicoproteína gp120.
- Examen de un locus hipervariable dentro del dominio V2 para su papel en la conversión del fenotipo.
Principales resultados:
- Las regiones V1 a V2 y V3 de gp120 contienen los principales determinantes de la capacidad SI.
- Se encontró que la configuración específica de un locus hipervariable en el dominio V2 era predictiva de la conversión del fenotipo VIH-1 no SI a SI.
Conclusiones:
- La predicción temprana de la evolución del fenotipo del VIH-1, específicamente el cambio a las variantes SI, es posible.
- Los marcadores predictivos para la evolución del VIH-1 podrían mejorar el monitoreo clínico y las estrategias de tratamiento para la infección asintomática por VIH-1.
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