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Los genes de la colibactina son muy frecuentes en el microbioma intestinal del bebé en desarrollo
Shira Levy1, Kathryn E McCauley2, Rachel Strength1
1Clinical Microbiome Unit, Laboratory of Host Immunity and Microbiome, Division of Intramural Research, National Institute of Allergy and Infectious Disease, National Institute of Health, Bethesda, MD.
medRxiv : the preprint server for health sciences
|August 20, 2025
Resumen
Las bacterias intestinales productoras de colibactina (pks+) son comunes en los bebés, lo que sugiere que el transporte temprano es normal. Se necesita más investigación para comprender cómo esta bacteria puede aumentar el riesgo de cáncer colorrectal más adelante en la vida.
Área de la Ciencia:
- Microbiología
- Gastroenterología
- En el campo de la oncología
Sus antecedentes:
- Las bacterias productoras de colibactina que llevan la isla genómica *pks* están implicadas en el desarrollo del cáncer colorrectal.
- La composición del microbioma intestinal en los primeros años de vida es crítica para la salud a largo plazo.
- El papel de las bacterias * pks + * en la vida temprana y el riesgo de cáncer posterior sigue sin estar claro.
Objetivo del estudio:
- Investigar la prevalencia de bacterias productoras de colibactina (*pks+*) en los lactantes.
- Evaluar el vínculo potencial entre el transporte bacteriano de *pks+* en la vida temprana y el riesgo de cáncer colorrectal.
Principales métodos:
- Estudio de la prevalencia de las bacterias *pks+* en los microbiomas intestinales infantiles.
- Análisis del transporte bacteriano durante los dos primeros años de vida.
Principales resultados:
- Se observó una prevalencia extremadamente alta de bacterias *pks+* en más del 50% de los lactantes estudiados.
- El transporte de bacterias * pks + * parece ser una ocurrencia común durante el desarrollo temprano del microbioma.
Conclusiones:
- El transporte temprano de bacterias productoras de colibactina (*pks+*) es probablemente un aspecto normal del desarrollo del microbioma intestinal.
- Se requieren investigaciones adicionales para determinar las condiciones específicas en las que el transporte de *pks+* puede conducir a la mutagenesis y al aumento del riesgo de cáncer colorrectal.
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