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Mantenerse en contacto mientras viaja

Kerwyn Casey Huang1

  • 1Department of Bioengineering, Stanford University, Stanford, CA 94305, USA; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA.

Cell
|January 14, 2017
PubMed
Resumen
Este resumen es generado por máquina.

Las biopelículas bacterianas usan señales eléctricas, específicamente la producción de iones de potasio, para comunicarse. Esta señalización eléctrica atrae a células bacterianas móviles distantes, incluso de diferentes especies, destacando una nueva vía de comunicación.

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Área de la Ciencia:

  • Microbiología
  • Biología celular
  • La bioelectricidad

Sus antecedentes:

  • La señalización química es un mecanismo bien establecido para la comunicación entre células bacterianas y la coordinación de la población.
  • La señalización eléctrica en las poblaciones bacterianas sigue siendo en gran medida inexplorada y subestimada.

Objetivo del estudio:

  • Investigar el papel de la señalización eléctrica en la comunicación bacteriana dentro de las biopelículas de Bacillus subtilis.
  • Para determinar si las biopelículas de Bacillus subtilis pueden atraer a las células bacterianas móviles distantes utilizando señales eléctricas.

Principales métodos:

  • Utilizó la producción de potasio como un mecanismo para la señalización eléctrica.
  • Cambios medidos en el potencial de la membrana para evaluar la comunicación eléctrica.
  • Se observó la atracción de las células bacterianas móviles a las biopelículas de Bacillus subtilis.

Principales resultados:

  • Las biopelículas de Bacillus subtilis generan señales eléctricas a través de la producción de potasio.
  • Estas señales eléctricas alteran el potencial de la membrana de las células cercanas.
  • La señalización eléctrica inducida por el potasio atrae eficazmente a las células bacterianas móviles distantes, incluidas las de especies filogenéticamente diversas.

Conclusiones:

  • La señalización eléctrica, mediada por la producción de potasio y los cambios en el potencial de la membrana, representa un modo significativo de comunicación bacteriana.
  • Este mecanismo facilita la atracción de células móviles conspecíficas y heterospecíficas a las biofilms establecidas.
  • Los hallazgos amplían nuestra comprensión de la coordinación bacteriana más allá de las vías de señalización química tradicionales.