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Mejora de la neovascularización postnatal mediante células madre derivadas del tejido adiposo humano
A Miranville1, C Heeschen, C Sengenès
1Department of Cardiovascular Physiology, J-W Goethe University, Frankfurt, Germany.
Circulation
|July 9, 2004
Resumen
La fracción stroma-vascular del tejido adiposo contiene células CD34+/CD31- que actúan como células progenitoras endoteliales. Estas células pueden mejorar la formación de vasos sanguíneos y pueden ser valiosas para la terapia celular.
Área de la Ciencia:
- La Medicina Regenerativa es una Medicina Regenerativa.
- Biología celular Biología celular.
- Biología Vascular Biología Vascular
Sus antecedentes:
- Se sabe que la fracción estroma-vascular (SVF) del tejido adiposo (AT) contiene células madre.
- La caracterización de estas células madre es crucial para aplicaciones terapéuticas.
Objetivo del estudio:
- Para identificar y caracterizar las células madre y progenitoras dentro del tejido adiposo humano SVF.
- Evaluar el potencial terapéutico de estas células para promover la vasculogénesis.
Principales métodos:
- Análisis de clasificación celular activada por fluorescencia (FACS) utilizando anticuerpos para CD31, CD34, CD133 y ABCG2.
- Aislamiento de las células CD34+/CD31- a través de microperlas magnéticas.
- Ensayos de diferenciación in vitro y estudios in vivo en un modelo de extremidad trasera isquémica de ratón.
Principales resultados:
- Human AT SVF contiene células CD34+, incluyendo poblaciones que expresan CD133 y ABCG2.
- Se identificaron dos poblaciones de células CD34+ distintas basadas en la expresión de CD31.
- Las células CD34+/CD31- se diferenciaron en células endoteliales in vitro.
- La inyección intravenosa de células CD34+/CD31- mejoró el flujo sanguíneo y la densidad capilar en extremidades posteriores isquémicas.
Conclusiones:
- Una población distinta de células CD34+/CD31- en el SVF AT humano exhibe características de células progenitoras endoteliales.
- El tejido adiposo humano es una fuente potencial de células madre / progenitoras para la vasculogénesis terapéutica.
- Estos hallazgos apoyan el uso de células madre derivadas de la grasa para terapias regenerativas.
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