The antagonistic roles of PDGF and integrin αvß3 in regulating ROS production at focal adhesions.
Biomaterials
; 34(15): 3807-15, 2013 May.
Article
en En
| MEDLINE
| ID: mdl-23465490
ABSTRACT
Reactive oxygen species (ROS) have been shown to play crucial roles in regulating various cellular functions, e.g. focal adhesion (FA) dynamics and cell migration upon growth factor stimulation. However, it is not clear how ROS are regulated at subcellular FA sites to impact cell migration. We have developed a biosensor capable of monitoring ROS production at FA sites in live cells with high sensitivity and specificity, utilizing fluorescence resonance energy transfer (FRET). The results revealed that platelet derived growth factor (PDGF) can induce ROS production at FA sites, which is mediated by Rac1 activation. In contrast, integrins, specifically integrin αvß3, inhibits this local ROS production. The RhoA activity can mediate this inhibitory role of integrins in regulating ROS production. Therefore, PDGF and integrin αvß3 coordinate to have an antagonistic effect in the ROS production at FA sites to regulate cell adhesion and migration.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Factor de Crecimiento Derivado de Plaquetas
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Especies Reactivas de Oxígeno
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Adhesiones Focales
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Integrina alfaVbeta3
Tipo de estudio:
Prognostic_studies
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Biomaterials
Año:
2013
Tipo del documento:
Article
País de afiliación:
Estados Unidos