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Un programa de desarrollo multicelular en un pariente animal cercano

Marine Olivetta^1,2, Chandni Bhickta¹, Nicolas Chiaruttini³

¹Swiss Institute for Experimental Cancer Research, School of Life Sciences, Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland.

|November 7, 2024

Resumen

El desarrollo multicelular, esencial para los animales, puede haberse originado antes de lo que se pensaba. La investigación sobre Chromosphaera perkinsii revela un desarrollo temprano similar al animal en un pariente cercano, lo que sugiere orígenes antiguos o evolución convergente de este rasgo.

Área de la Ciencia:

Biología del desarrollo evolutivo
Biología celular y molecular
Protistología

Sus antecedentes:

Los animales se desarrollan a partir de cigotos unicelulares a través de la embriogénesis conservada.
El origen evolutivo de la multicelularidad animal sigue siendo en gran medida desconocido.

Objetivo del estudio:

Para investigar el programa de desarrollo de Chromosphaera perkinsii, un pariente de divergencia temprana de los animales.
Para obtener información sobre los orígenes evolutivos del desarrollo multicelular de los animales.

Principales métodos:

Imagen con resolución de tiempo del desarrollo de C. perkinsii.
Perfiles transcriptómicos para analizar la expresión génica durante el desarrollo.

Principales resultados:

C. perkinsii exhibe ruptura de simetría y divisiones de escisión desde una sola célula.
Este proceso da como resultado una colonia multicelular con tipos celulares distintos.
El programa de desarrollo es autónomo y palintómico.

Conclusiones:

El desarrollo multicelular en C. perkinsii sugiere que es mucho más antiguo de lo que se suponía anteriormente o evolucionó convergentemente en ictiosporeas.
Proporciona un modelo para comprender la evolución temprana del desarrollo animal.

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