Video Experimental Relacionado
Updated: Jul 17, 2026
10:13
Modeling Astrocytoma Pathogenesis In Vitro and In Vivo Using Cortical Astrocytes or Neural Stem Cells from Conditional, Genetically Engineered Mice
Published on: August 12, 2014
13.9K
Eje PGC-1α de direccionamiento para rescatar el desarrollo aberrante del defecto de hormona tiroidea en organoides
Emanuela Bottani1, Francesca Ciarpella1, Benedetta Lucidi1
1Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, Italy.
Pharmacological research
|December 19, 2025
Resumen
La deficiencia de hormona tiroidea (T3) altera el desarrollo cerebral al alterar la función mitocondrial. La estimulación de la vía PGC-1α con compuestos específicos ofrece un tratamiento potencial para estos graves trastornos del neurodesarrollo.
Área de la Ciencia:
- Neurociencia
- Biología del Desarrollo
- Biología Mitocondrial
Sus antecedentes:
- La hormona tiroidea (T3) es crucial para el desarrollo del sistema nervioso central.
- La deficiencia de T3 causa graves patologías del neurodesarrollo, como discapacidad intelectual y disfunción motora.
- No se comprenden completamente los mecanismos precisos por los cuales la T3 apoya el neurodesarrollo.
Objetivo del estudio:
- Elucidar el papel de la T3 en el desarrollo neuronal y la función mitocondrial.
- Identificar los mediadores moleculares clave de los efectos de la T3 en el cerebro en desarrollo.
- Explorar estrategias terapéuticas para los trastornos del neurodesarrollo relacionados con la deficiencia de T3.
Principales métodos:
- Se utilizaron organoides del prosencéfalo dorsal murino para modelar la deficiencia de T3.
- Se evaluó la beta-oxidación mitocondrial y la biogénesis de la fosforilación oxidativa (OXPHOS).
- Se investigó el papel del coactivador transcripcional PGC-1α.
- Se emplearon intervenciones farmacológicas dirigidas a la beta-oxidación y al eje PGC-1α.
Principales resultados:
- La deficiencia de T3 alteró gravemente la maduración neuronal, aumentó la gliosis y redujo la actividad neuronal en organoides cerebrales.
- La T3 activa la beta-oxidación mitocondrial y la biogénesis de OXPHOS, esenciales para el desarrollo neuronal.
- El PGC-1α actúa como mediador central de los efectos de la T3; su aumento rescató el desarrollo en condiciones de privación de T3.
- La activación farmacológica del eje PGC-1α (usando Nicotinamida Ribósido o Bezafibrato) rescató la función mitocondrial y corrigió los defectos del neurodesarrollo a pesar de la deficiencia de T3.
Conclusiones:
- La T3 es esencial para activar la bioenergética mitocondrial, específicamente la beta-oxidación y la OXPHOS, para apoyar el neurodesarrollo.
- La vía PGC-1α es un mediador crítico de las funciones neurodesarrolladoras de la T3.
- La focalización del eje PGC-1α presenta una estrategia terapéutica prometedora para los trastornos del neurodesarrollo causados por la deficiencia de hormona tiroidea.
Palabras clave:
Organoides cerebralesOxidación de ácidos grasosMitocondriasNeurodesarrolloHormona tiroideaMás Videos Relacionados
Videos de Conceptos Relacionados
01:20The Retinoblastoma Gene
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
01:20The Retinoblastoma Gene
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
01:22Target Cell Response to Hormones
Hormones intricately bind to receptors on the surface or within target cells, initiating a cascade of cellular responses.
Notably, the cellular response can be regulated by altering the number of receptors expressed in the cell. For example, prolonged exposure to elevated hormone levels results in a gradual decline or down-regulation in the number of receptors for that specific hormone on the cell surface. Conversely, in response to low hormone levels, cells may use up-regulation, producing an...
Notably, the cellular response can be regulated by altering the number of receptors expressed in the cell. For example, prolonged exposure to elevated hormone levels results in a gradual decline or down-regulation in the number of receptors for that specific hormone on the cell surface. Conversely, in response to low hormone levels, cells may use up-regulation, producing an...
01:20Folliculogenesis
Folliculogenesis is the development of ovarian follicles, the specialized structures within the ovarian cortex where oogenesis, or egg development, occurs. This process is essential for female reproductive health and begins during fetal development when primordial follicles are formed. Each primordial follicle comprises a primary oocyte in the center, surrounded by a single layer of squamous pre-granulosa cells. These follicles remain dormant in late prophase I of meiosis until triggered by...