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Más allá de la proteína de espiga: firmas mutacionales en proteínas estructurales de SARS-CoV-2
Emil Tonon1,2, Riccardo Cecchetto1,2, Virginia Lotti1
1Department of Diagnostic and Public Health, Division of Microbiology, University of Verona, 37134 Verona, Italy.
Infectious disease reports
|December 24, 2025
Resumen
La vigilancia genómica de variantes de SARS-CoV-2 en Italia identificó 18 mutaciones clave en proteínas estructurales. Esta investigación destaca la importancia del monitoreo continuo para comprender la evolución viral y las amenazas a la salud pública.
Área de la Ciencia:
- Virología
- Genómica
- Salud Pública
Sus antecedentes:
- Las variantes emergentes de SARS-CoV-2 plantean importantes desafíos para la salud pública.
- La vigilancia genómica mediante secuenciación de próxima generación (NGS) es crucial para rastrear la evolución viral.
- Comprender las mutaciones en las proteínas estructurales (E, M, N) es clave para monitorear las variantes.
Objetivo del estudio:
- Analizar mutaciones en las proteínas estructurales de SARS-CoV-2 (E, M, N) durante la vigilancia genómica rutinaria.
- Identificar y caracterizar mutaciones con una prevalencia superior al 1% en la cohorte de estudio.
- Clasificar la dinámica de las mutaciones (fijas, emergentes, transitorias) y evaluar su significado.
Principales métodos:
- Análisis de genomas completos de SARS-CoV-2 de febrero de 2022 a marzo de 2024 en Verona, Italia.
- Enfoque en mutaciones dentro de las proteínas de envoltura (E), membrana (M) y nucleocápside (N).
- Criterios de inclusión: sustituciones con una prevalencia >1% en el conjunto de datos.
Principales resultados:
- Se identificaron 178 mutaciones en las proteínas E, M y N; 18 cumplieron el umbral de inclusión.
- Las mutaciones se categorizaron según la dinámica temporal: fijas, emergentes y transitorias.
- Varias mutaciones mostraron relevancia estructural/funcional potencial, mientras que otras permanecen sin caracterizar.
Conclusiones:
- Los patrones mutacionales detectados se alinean con las tendencias evolutivas globales de SARS-CoV-2.
- Enfatiza el papel crítico de la vigilancia genómica continua.
- Recomienda estudios experimentales integrados para dilucidar el impacto de las mutaciones novedosas.
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