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El tropismo de la pleiotrofina: orquestación de la invasión cerebral del glioma
1Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, USA.
Cell
|August 26, 2017
Resumen
Los tumores cerebrales se diseminan preferentemente al ventrículo lateral (LV) debido a los progenitores neurales que secretan un complejo de pleiotrofina (PTN). Este complejo activa la señalización ROCK / Rho, atrayendo a las células de glioma a la LV.
Área de la Ciencia:
- La neurociencia
- En el campo de la oncología
- Biología celular
Sus antecedentes:
- El ventrículo lateral (LV) es un sitio común para la metástasis de tumores cerebrales.
- Los mecanismos moleculares específicos que impulsan este tropismo no se comprendieron bien.
Objetivo del estudio:
- Para identificar las señales instructivas responsables del tropismo de células de glioma en el ventrículo lateral.
- Para aclarar las vías de señalización involucradas en esta propagación preferencial del tumor.
Principales métodos:
- Investigó la composición molecular de los factores secretados de los progenitores neurales LV.
- Analizó el efecto de estos factores en la migración e invasión de células de glioma.
- Se examinó el papel de la señalización ROCK/Rho en la mediación del tropismo observado.
Principales resultados:
- Los progenitores neurales LV secretan un complejo que contiene pleiotropina (PTN).
- Este complejo que contiene PTN atrae significativamente las células de glioma.
- La atracción de las células de glioma se media a través de la activación de las vías de señalización ROCK/Rho.
Conclusiones:
- La pleiotropina (PTN) secretada por los progenitores neurales LV es un factor clave en el tropismo del tumor cerebral en el ventrículo lateral.
- La activación de ROCK/Rho es esencial para mediar la atracción de las células de glioma hacia el LV.
- Comprender este mecanismo puede ofrecer nuevas estrategias terapéuticas para los tumores cerebrales.
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