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Updated: Aug 9, 2026
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Vaccinia Virus Infection & Temporal Analysis of Virus Gene Expression: Part 1
Published on: April 8, 2009
Determinantes potenciales de virulencia en regiones terminales del genoma del virus de la variola y la viruela
R F Massung1, J J Esposito, L I Liu
1Division of Viral and Rickettsial Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 30333.
Nature
|December 23, 1993
Resumen
Se determinó la secuencia completa del genoma del virus de la variola mayor (VAR-BSH), revelando 187 proteínas. La mayoría de las proteínas eran similares al virus de la vacuna, pero 37 mostraron diferencias específicas de la variola que contribuyen a la patogenicidad.
Área de la Ciencia:
- Virología Virología.
- La genómica es la genómica.
- Biología Molecular Biología Molecular
Sus antecedentes:
- La erradicación de la viruela representa un gran éxito en las campañas antimicrobianas.
- Comprender el genoma del virus de la variola mayor es crucial para estudiar la viruela.
- Estudios previos han secuenciado el virus de la vacuna, un poxvirus relacionado.
Objetivo del estudio:
- Para determinar la secuencia completa de nucleótidos del genoma del virus de la variola mayor (VAR-BSH).
- Para identificar proteínas virales potencialmente involucradas en la patogenicidad y el rango de huéspedes.
- Para comparar el genoma del virus de la variola con el del virus de la vacuna.
Principales métodos:
- Secuenciación del genoma completo del virus de la variola mayor, cepa Bangladesh-1975 (VAR-BSH).
- Análisis bioinformático para identificar marcos de lectura abiertos y predecir secuencias de proteínas.
- Genómica comparativa para analizar similitudes y diferencias con la cepa del virus de la vacuna Copenhague (VAC-CPN).
Principales resultados:
- Se determinó la secuencia completa del genoma de VAR-BSH (186.102 pares de bases).
- Se identificaron 187 proteínas putativas dentro del genoma viral.
- 150 proteínas mostraron una gran similitud con las proteínas del virus de la vacuna.
- 37 proteínas exhibieron secuencias específicas de variola o divergencias significativas.
Conclusiones:
- La secuenciación del genoma proporciona un recurso completo para la investigación del virus de la variola.
- Las proteínas específicas de la variola probablemente juegan un papel clave en la patogenicidad del virus y el tropismo del huésped.
- El análisis comparativo destaca las diferencias genéticas que contribuyen a la virulencia del virus de la variola en comparación con el virus de la vacuna.
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