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Comunicación intercelular colectiva a través de ondas de activación hidrodinámicas ultrarrápidas

  • 0Department of Bioengineering, Stanford University, Stanford, CA, USA.
Nature +

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12 de julio de 2019

|

12 de julio de 2019

Ver abstracta en PubMed

Resumen

Este resumen es generado por máquina.

Los científicos descubrieron rápidamente

Área De La Ciencia

  • La biofísica
  • Biología celular
  • Dinámica de fluidos

Sus Antecedentes

  • Las relaciones biofísicas sensor-actuador son cruciales para la vida.
  • Los organismos acuáticos dependen de respuestas rápidas a los estímulos para sobrevivir.
  • Los protistas como Spirostomum ambiguum exhiben comportamientos complejos.

Objetivo Del Estudio

  • Descubrir y caracterizar nuevos mecanismos de señalización en las comunidades celulares.
  • Para investigar la rápida propagación de la información en Spirostomum ambiguum.
  • Para entender las bases biofísicas del comportamiento celular colectivo.

Principales Métodos

  • Observación de las contracciones y generación de flujo de Spirostomum ambiguum.
  • Desarrollo de un dispositivo de flujo de succión de alto rendimiento para la detección de la mecanicidad.
  • Modelado cuantitativo utilizando la teoría de la antena y la percolación.

Principales Resultados

  • Descubrimiento de "ondas gatillo hidrodinámicas" que se propagan mucho más rápido que la velocidad de natación celular.
  • Demostración de que las contracciones celulares generan flujos de vórtice de largo alcance que activan a los vecinos.
  • Identificación de una densidad crítica de la colonia para una comunicación colectiva sostenida mediante una transición de fase.

Conclusiones

  • Las ondas gatillo hidrodinámicas permiten una comunicación ultrarrápida en Spirostomum ambiguum.
  • Este mecanismo de señalización puede organizar comunidades e influir en el comportamiento.
  • Otros organismos acuáticos pueden emplear mecanismos similares.

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