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Infección por Campylobacter jejuni: impacto de las miRNAs de origen del huésped dirigidas a genes bacterianos y del
Siddhi Chitre1, Raad Z Gharaibeh1,2, Rachel C Newsome1
1Department of Medicine, University of Florida College of Medicine, Gainesville, Florida, USA.
Microbiology spectrum
|January 22, 2026
Resumen
La infección por Campylobacter jejuni altera los perfiles de microARNs derivados de vesículas extracelulares (VE) del huésped en ratones. Estos ARNm alterados pueden dirigirse a genes de virulencia bacteriana, influyendo en las interacciones huésped-patógeno y la homeostasis intestinal.
Área de la Ciencia:
- Microbiología
- Genética
- Inmunología
Sus antecedentes:
- Los microARNs (miARNs) derivados del huésped regulan la expresión génica y la homeostasis intestinal.
- Las vesículas extracelulares (VE) están implicadas en la comunicación intercelular.
- Se desconoce en gran medida el papel de las especies bacterianas en la modulación de los perfiles de miARNs de VE del huésped.
Objetivo del estudio:
- Investigar cómo la infección por Campylobacter jejuni altera los perfiles de miARNs derivados de VE en el intestino.
- Determinar si estos miARNs pueden dirigirse a genes de virulencia bacteriana.
- Explorar el impacto de estos cambios en la comunicación huésped-microbio y la salud intestinal.
Principales métodos:
- Comparación de perfiles de miARNs fecales de ratones germ-free, ratones colonizados con un consorcio bacteriano (C13) y ratones colonizados con C13 más C. jejuni.
- Perfilado de miARNs y análisis de expresión diferencial.
- Integración con transcriptómica espacial del colon de ratón.
Principales resultados:
- La infección por C. jejuni alteró significativamente el panorama de miARNs derivados de VE del huésped.
- Se observó un aumento en la expresión de miARNs predichos para dirigirse a genes de virulencia bacteriana.
- Se encontró que EV-miARNs específicos se dirigen a genes epiteliales del huésped involucrados en la regulación inmune, la inflamación y la función de barrera.
Conclusiones:
- La infección por C. jejuni modifica la expresión de miARNs derivados de VE del huésped.
- Los miARNs empaquetados en VE pueden representar un mecanismo de defensa del huésped contra patógenos bacterianos.
- Estos hallazgos ofrecen información sobre la comunicación huésped-microbio y su papel en la salud y la enfermedad intestinal.
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