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Updated: Jun 6, 2025

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Efficient Differentiation of Postganglionic Sympathetic Neurons using Human Pluripotent Stem Cells under Feeder-free and Chemically Defined Culture Conditions
Published on: May 24, 2020
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La inervación simpática específica del órgano define las funciones viscerales
Tongtong Wang1, Bochuan Teng1, Dickson R Yao2
1Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA.
Nature
|November 28, 2024
Resumen
El sistema nervioso simpático
Área de la Ciencia:
- La neurociencia
- Biología molecular
- Fisiología
Sus antecedentes:
- El sistema nervioso autónomo regula las funciones corporales a través de vías simpáticas y parasimpáticas.
- La comprensión del sistema nervioso simpático a nivel celular y molecular es limitada.
- Los ganglios mesentéricos celiaco-superiores (CG-SMG) son los principales grupos de nervios simpáticos abdominales.
Objetivo del estudio:
- Para mapear las proyecciones del nervio simpático a los órganos viscerales.
- Identificar poblaciones de neuronas simpáticas molecularmente distintas dentro del CG-SMG.
- Investigar las funciones funcionales de estas distintas poblaciones simpáticas.
Principales métodos:
- Análisis transcriptómico multimodal de CG-SMG.
- Mapa topológico de la inervación simpática hacia los órganos viscerales.
- Experimentos de perturbación neuronal para evaluar las funciones.
Principales resultados:
- Se identificaron poblaciones de neuronas simpáticas molecularmente distintas en el CG-SMG.
- Proyecciones axonales selectivas y exclusivas demostradas de poblaciones de CG-SMG a órganos viscerales específicos.
- Se muestra segregación funcional: una población regula el tránsito gastrointestinal, otra controla la digestión y la secreción de glucagón de forma independiente.
Conclusiones:
- El sistema nervioso simpático exhibe diversidad molecular dentro del CG-SMG.
- El control simpático de los órganos viscerales es modular, con poblaciones distintas que regulan diferentes funciones.
- Esto proporciona un marco para comprender la regulación compleja de la función del órgano por el sistema nervioso simpático.
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