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Replicación y entrega en un solo ciclo de réplicas del SARS-CoV-2
Inna Ricardo-Lax1, Joseph M Luna1, Tran Thi Nhu Thao2,3,4
1Laboratory of Virology and Infectious Disease, The Rockefeller University, New York, NY 10065, USA.
Science (New York, N.Y.)
|October 14, 2021
Resumen
Los investigadores desarrollaron un nuevo sistema basado en levaduras para crear ARN no infecciosos y autorreplicantes del SARS-CoV-2. Esta plataforma permite la investigación segura en el síndrome respiratorio agudo severo coronavirus 2 (SARS-CoV-2) y el desarrollo antiviral en laboratorios de menor contención.
Área de la Ciencia:
- Virología molecular
- La genética
- Enfermedades infecciosas
Sus antecedentes:
- Las herramientas de virología molecular son esenciales para estudiar el coronavirus 2 del síndrome respiratorio agudo severo (SARS-CoV-2) y desarrollar terapias.
- Se necesitan sistemas experimentales que no requieran virus infecciosos y propagables, especialmente para su uso en entornos de laboratorio de menor contención.
Objetivo del estudio:
- Desarrollar un sistema experimental seguro y versátil para la investigación del SARS-CoV-2.
- Para crear construcciones de ARN no infecciosas y autorreplicantes para estudios de SARS-CoV-2.
- Establecer una plataforma para el cribado de medicamentos antivirales y la caracterización de las variantes virales.
Principales métodos:
- Utilizó un sistema de genética inversa basado en levadura.
- Los ARN autoreplicantes (replicantes) del SARS-CoV-2 eliminados por la ingeniería.
- Se utiliza la transcomplementación con glicoproteínas virales para generar partículas de entrega de réplicas para la entrada celular de un solo ciclo.
Principales resultados:
- Se han desarrollado con éxito réplicas no infecciosas del SARS-CoV-2.
- Demostró la capacidad de generar partículas de entrega de réplicas para la entrada versátil en la célula.
- Estableció un sistema para la administración de un solo ciclo en varios tipos de células.
Conclusiones:
- El sistema de réplicas de SARS-CoV-2 desarrollado es una plataforma conveniente y versátil.
- Este sistema facilita el cribado de medicamentos antivirales, los ensayos de neutralización y la validación del factor huésped.
- También es valioso para caracterizar las variantes emergentes de SARS-CoV-2 de manera segura.
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