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Heparan sulfate proteoglycans: structure, protein interactions and cell signaling Anais da ABC (AABC)
Dreyfuss,Juliana L.; Regatieri,Caio V.; Jarrouge,Thais R.; Cavalheiro,Renan P.; Sampaio,Lucia O.; Nader,Helena B..
Heparan sulfate proteoglycans are ubiquitously found at the cell surface and extracellular matrix in all the animal species. This review will focus on the structural characteristics of the heparan sulfate proteoglycans related to protein interactions leading to cell signaling. The heparan sulfate chains due to their vast structural diversity are able to bind and interact with a wide variety of proteins, such as growth factors, chemokines, morphogens, extracellular matrix components, enzymes, among others. There is a specificity directing the interactions of heparan sulfates and target proteins, regarding both the fine structure of the polysaccharide chain as well precise protein motifs. Heparan sulfates play a role in cellular signaling either as receptor...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycosaminoglycans and protein interactions; Growth factors; Focal adhesion; Extracellular matrix; Cell cycle; Cell proliferation.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000300007
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Signaling triggered by Thy-1 interaction with ß3 integrin on astrocytes is an essential step towards unraveling neuronal Thy-1 function Biol. Res.
AVALOS,ANA MARIA; LABRA,CECILIA V.; QUEST,ANDREW F.G.; LEYTON,LISSETTE.
Thy-1 is an abundant neuronal glycoprotein in mammals. Despite such prevalence, Thy-1 function remains largely obscure in the absence of a defined ligand. Recently described evidence that Thy-1 interacts with ß3 integrin on astrocytes will be discussed. Thy-1 binding to ß3 integrin triggers tyrosine phosphorylation of focal adhesion proteins in astrocytes, thereby promoting focal adhesion formation, cell attachment and spreading. Thy-1 has been reported to modulate neurite outgrowth by triggering a cellular response in neurons. However, our data indicate that Thy-1 can also initiate signaling events that promote adhesion of adjacent astrocytes to the underlying surface. Preliminary results suggest that morphological changes observed in the actin...
Tipo: Journal article Palavras-chave: Thy-1 ligand/integrins; GPI-anchored proteins; Strocytes; Focal adhesion.
Ano: 2002 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602002000200015
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