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Biochem Biophys Res Commun ; 371(3): 420-4, 2008 Jul 04.
Artigo em Inglês | MEDLINE | ID: mdl-18448071

RESUMO

Fibromodulin is a small leucine-rich proteoglycan that has a central role in the maintenance of collagen fibrils structure, and in regulation of TGF-beta biological activity. Although, it is mainly found in cartilage and tendon, little is known regarding the expression of the fibromodulin gene in other cell types. By RT-PCR, real time PCR and immunohistochemistry, we describe the expression of the fibromodulin gene and the presence of the protein in human epidermal keratinocytes (HEK), both in culture and in normal human epidermis. Our results show, for the first time, that fibromodulin gene is constantly expressed in HEK during culture time. Immunostaining showed that fibromodulin is located intracytoplasmically in basal and stratified keratinocytes of the growing colonies, confluent cultures, and epidermis in vivo. The expression and intracellular localization of fibromodulin in HEK is a new finding and opens new possible biological roles for the SLRP family.


Assuntos
Epiderme/metabolismo , Proteínas da Matriz Extracelular/genética , Expressão Gênica , Proteínas/genética , Proteoglicanas/genética , Células Cultivadas , Citoplasma/química , Citoplasma/metabolismo , Células Epidérmicas , Epiderme/química , Proteínas da Matriz Extracelular/análise , Proteínas da Matriz Extracelular/metabolismo , Fibromodulina , Humanos , Imuno-Histoquímica , Queratinócitos/química , Queratinócitos/metabolismo , Proteínas de Repetições Ricas em Leucina , Proteínas/análise , Proteínas/metabolismo , Proteoglicanas/análise , Proteoglicanas/metabolismo
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