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Odoribacter splanchnicus inhibe la producción de toxinas en Clostridioides difficile: conocimientos de la correlación

Na Wang¹, Jing Fan¹, Xianbo Geng¹

¹Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China.

Frontiers in microbiology

|February 9, 2026

Resumen

Odoribacter splanchnicus reduce significativamente la gravedad de la infección por Clostridioides difficile (CDI) al suprimir la producción de toxinas y aumentar la esporulación. Este hallazgo apoya a O. splanchnicus como un potencial terapéutico para la ICD.

Área de la Ciencia:

Microbiología Microbiología.
Gastroenterología y Gastroenterología.
Ciencias Médicas Ciencias Médicas.

Sus antecedentes:

La infección por Clostridioides difficile (CDI) es una de las principales causas de diarrea adquirida en el hospital.
La disbiosis de la microbiota intestinal es clave en la CDI, pero las especies comensales protectoras siguen sin estar claras.

Objetivo del estudio:

Identificar las especies comensales protectoras contra la CDI.
Investigar el mecanismo por el cual Odoribacter splanchnicus tiene un impacto en C. difficile.

Principales métodos:

Secuenciación de ARNr 16S de muestras fecales de pacientes con ICD, pacientes con diarrea, portadores y controles.
Co-cultivo in vitro de O. splanchnicus y C. difficile. en el mismo cultivo.
Cuantificación de los niveles de toxinas (ELISA), la esporulación (resistencia al etanol) y la expresión génica de toxinas (qPCR).

Principales resultados:

La abundancia de O. splanchnicus se correlacionó negativamente con la gravedad de la ICD.
El alto nivel de O. splanchnicus suprimió la producción de toxinas de C. difficile y aumentó la regulación de la esporulación.
La supresión de la producción de toxinas se relacionó con la regulación a la baja de la expresión génica tcdB.

Conclusiones:

O. splanchnicus se muestra prometedor para el desarrollo de terapias microbianas definidas contra CDI.
Proporciona conocimientos mecanicistas para las estrategias anti-virulencia dirigidas a CDI.

Palabras clave:

El Clostridioides difficile es muy difícil de encontrar.El Odoribacter splanchnicuscus es también conocido como Odoribacter.las bacterias comensales comensales.El microbioma intestinal es el microbioma intestinal.La esporulación es la esporación.La inhibición de la toxina.

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