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DIGITAL.CSIC
Doctoral thesis . 2014 . Peer-reviewed
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Sparc (Osteonectin): new insight into the function and regulation

Authors: Torres-Núñez, Eva;

Sparc (Osteonectin): new insight into the function and regulation

Abstract

La matriz extracelular es una red compleja secretada por las células que sirve como un elemento estructural de los tejidos y que incluso interviene en su desarrollo y fisiología (Alberts et al., 2002). Concretamente ayuda a las células a unirse entre sí y también regula diversas funciones celulares tales como migración, proliferación y diferenciación (Teti, 1992). Está compuesta por factores de crecimiento, proteoglicanos, proteínas estructurales y proteínas matricelulares. Osteonectina, también llamada Sparc o BM-40, es una glicoproteína multifuncional que pertenece a la familia de las proteínas matricelulares. Este grupo de proteínas modula las interacciones entre la matriz y las células e interviene en múltiples funciones más que limitarse a jugar un papel meramente estructural (Brekken and Sage, 2000). Sparc tiene una alta afinidad por los iones calcio y fue descubierta por primera vez como el componente mayoritario de la matriz extracelular de tejidos mineralizados. Más tarde, se localizó en muchos otros tejidos. La expresión de Sparc es elevada durante el desarrollo temprano y disminuye durante la edad adulta. Sin embargo, su expresión aumenta en tejidos que requieren cierto grado de renovación, reparación o en tumorigénesis (Yan y Sage, 1999). Debido a que Sparc es capaz de interactuar con múltiples moléculas, se le han atribuido importantes funciones como antiadhesión, regulación del ciclo celular y actividad angiogénica (Yan y Sage, 1999).

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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