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Laboratory Techniques Used to Maintain and Differentiate Biotypes of Vibrio cholerae Clinical and Environmental Isolates
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Serotipo de Vibrio cholerae: impacto en la patogenicidad

Franz G Zingl1,2,3, Deborah R Leitner1,2,3, Bolutife Fakoya1,2,3

  • 1Division of Infectious Diseases, Brigham & Women's Hospital, Boston, MA.

bioRxiv : the preprint server for biology
|January 7, 2026
PubMed
Resumen
Este resumen es generado por máquina.

La metilación del antígeno O1 de Vibrio cholerae en cepas Ogawa mejora la colonización y la infectividad bacteriana. Este antígeno O1 metilado protege a la bacteria de los péptidos antimicrobianos, ayudando a la supervivencia en el intestino delgado.

Palabras clave:
Vibrio choleraeOgawaInabametilaciónantígeno O1patogenicidadcolonizacióninfectividadpéptidos antimicrobianosintestino delgado

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Área de la Ciencia:

  • Microbiología
  • Inmunología
  • Biología Molecular

Sus antecedentes:

  • Vibrio cholerae O1 causa pandemias de cólera.
  • Las cepas de V. cholerae O1 se caracterizan por los serotipos Ogawa e Inaba.
  • El cambio de serotipo está relacionado con la adaptación del patógeno y la presión inmunitaria.

Objetivo del estudio:

  • Investigar el impacto de la metilación del antígeno O1 en la patogenicidad de V. cholerae.
  • Comparar cepas clínicas isogénicas de V. cholerae O1 Ogawa e Inaba.
  • Elucidar el papel del serotipo en la colonización y la infectividad de V. cholerae.

Principales métodos:

  • Se utilizaron aislados clínicos isogénicos de V. cholerae O1 Ogawa e Inaba.
  • Se evaluó la colonización bacteriana, la infectividad y la resistencia a péptidos antimicrobianos.
  • Se examinó el efecto de la metilación del antígeno O1 en la supervivencia de V. cholerae.

Principales resultados:

  • La metilación del antígeno O1 en cepas Ogawa promueve significativamente la colonización de V. cholerae.
  • Las cepas Ogawa exhiben una mayor infectividad en comparación con las cepas Inaba.
  • La metilación confiere resistencia a los péptidos antimicrobianos catiónicos.

Conclusiones:

  • La metilación del antígeno O1 es crucial para la colonización y la infectividad de V. cholerae.
  • La metilación protege a V. cholerae de los péptidos antimicrobianos en el intestino delgado.
  • Estos hallazgos resaltan la importancia biológica de los serotipos O1 de V. cholerae.