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Las diferencias en la dinámica evolutiva de los coronavirus MERS y SARS

Yushan Ding^1,2, Jiameng Liu¹, Jamal S M Sabir^3,4

¹State Key Laboratory for Animal Disease Control and Prevention, Center for Emerging and Zoonotic Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.

|August 28, 2025

Resumen

El coronavirus del síndrome respiratorio agudo severo (SARS-CoV) y el coronavirus del síndrome respiratorio del Medio Oriente (MERS-CoV) muestran dinámicas evolutivas distintas. El MERS-CoV muestra una propagación más fácil de los animales a los humanos, lo que complica el control de la enfermedad debido a su reservorio de camellos dromedarios.

Área de la Ciencia:

Genómica comparativa y virología evolutiva
Una Perspectivas sanitarias sobre las enfermedades zoonóticas
Epidemiología de enfermedades infecciosas

Sus antecedentes:

El SARS-CoV y el MERS-CoV son coronavirus humanos altamente patógenos con una mortalidad significativa.
Comprender sus diferencias evolutivas es crucial para las estrategias efectivas de control de enfermedades.

Objetivo del estudio:

Para comparar la dinámica evolutiva del SARS-CoV y el MERS-CoV.
Proporcionar una perspectiva de "Una sola salud" sobre las diferencias que afectan al control de enfermedades.
Investigar las disparidades de prevalencia del MERS-CoV entre Oriente Medio y África.

Principales métodos:

Análisis de la red filogenética de los aislados de SARS-CoV y MERS-CoV.
Comparación de las interacciones huésped-patógeno del MERS-CoV.
Análisis de las secuencias del gen dipeptidilpeptidasa 4 (DPP4) en poblaciones humanas.

Principales resultados:

Los aislamientos humanos del SARS-CoV formaron un grupo distinto de 'súper propagación' separado de los aislamientos de civetas.
MERS-CoV de camellos dromedarios y humanos agrupados juntos, lo que indica un contagio frecuente.
Las secuencias de genes DPP4 mostraron una variación mínima en las poblaciones egipcias, sudanesas y saudíes.

Conclusiones:

El MERS-CoV demuestra una transmisión más fácil de animal a humano en comparación con el SARS-CoV.
El reservorio de camellos dromedarios para el MERS-CoV presenta desafíos significativos para el control de la enfermedad.
Es probable que las diferencias observadas en la prevalencia del MERS se deban a factores de vigilancia y transmisión, no a variaciones en el gen DPP4.

Palabras clave:

DPP4 (en inglés)En el caso del MERS-CoV:En el caso del SARS-CoV:Dinámica de la evolución

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