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Convergencia evolutiva de los circuitos sensoriales en el palio de los amniotas
Eneritz Rueda-Alaña1,2, Rodrigo Senovilla-Ganzo1,2, Marco Grillo3
1Achucarro Basque Center for Neuroscience, Scientific Park of the University of the Basque Country (UPV/EHU), Leioa, Spain.
Science (New York, N.Y.)
|February 13, 2025
Resumen
La comparación de los circuitos sensoriales en aves, lagartos y mamíferos revela distintas vías de desarrollo pero un procesamiento de alto orden similar. Esto sugiere la evolución convergente de los sistemas sensoriales a través de los amniotas.
Área de la Ciencia:
- La neurociencia
- Biología evolutiva
- Biología del desarrollo
Sus antecedentes:
- Los circuitos sensoriales del palio amniótico muestran equivalencia funcional y estructural entre especies.
- Los orígenes evolutivos y las trayectorias de desarrollo de estos circuitos siguen siendo en gran medida desconocidos.
Objetivo del estudio:
- Para comparar el desarrollo y la evolución de los circuitos sensoriales paliares en aves, lagartos y mamíferos.
- Investigar el tiempo de desarrollo, los orígenes regionales y los perfiles transcriptómicos de las neuronas en estos circuitos.
Principales métodos:
- Análisis de la fecha de nacimiento para determinar el tiempo de generación neuronal.
- ARN unicelular y transcriptómica espacial para el perfil celular y espacial.
- Modelado matemático para analizar patrones de desarrollo y evolución.
Principales resultados:
- Las neuronas en los circuitos sensoriales paliares se generan en diferentes momentos de desarrollo y regiones cerebrales en todas las especies.
- Se observó una divergencia temprana significativa en la progresión transcriptómica de las neuronas glutamatérgicas.
- Se identificaron distinciones de desarrollo y similitudes funcionales en los circuitos sensoriales entre las aves y los mamíferos.
Conclusiones:
- El procesamiento sensorial en el pálio amniótico exhibe funciones conservadas y estrategias de desarrollo divergentes.
- El procesamiento sensorial de alto orden parece haber convergido independientemente a través de diferentes linajes amnióticos.
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