MFAP5 is related to obesity-associated adipose tissue and extracellular matrix remodeling and inflammation.
Obesity (Silver Spring)
; 23(7): 1371-8, 2015 Jul.
Article
em En
| MEDLINE
| ID: mdl-26054006
ABSTRACT
OBJECTIVE:
Low-grade inflammation is involved in adipose tissue (AT) and extracellular matrix (ECM) remodeling and induces deposition of ECM proteins in AT. We have previously shown that MFAP5 (microfibrillar-associated protein 5) expression decreases in AT after weight loss. The aim of this study was to investigate MFAP5 localization in human AT and gene expression in adipocytes and the role of MFAP5 in adipocyte metabolism and inflammation.METHODS:
MFAP5 protein localization and gene expression were studied with immunohistochemistry and quantitative reverse transcriptase PCR (RT-qPCR) in human subcutaneous AT and cultured Simpson-Golabi-Behmel syndrome (SGBS) adipocytes, respectively. The effect of MFAP5 knock-down by siRNA on gene expression and insulin action was examined with RT-qPCR, western blot, and insulin-stimulated glucose uptake. The effect of different cytokines on MFAP5 gene and protein expression was investigated in cultured human SGBS preadipocytes.RESULTS:
MFAP5 protein was highly expressed in AT, and gene expression decreased during adipocyte differentiation in SGBS cells. Treatment of preadipocytes with TNFα and TGFß1 increased MFAP5 gene and protein expression. Furthermore, MFAP5 knock-down decreased the expression of genes involved in inflammation.CONCLUSIONS:
Our results demonstrate that factors involving low-grade inflammation modulate MFAP5 expression and that the modified expression of MFAP5 may further regulate AT inflammation.
Texto completo:
1
Coleções:
01-internacional
Temas:
Geral
Base de dados:
MEDLINE
Assunto principal:
Glicoproteínas
/
Tecido Adiposo
/
Proteínas Contráteis
/
Matriz Extracelular
/
Obesidade
Tipo de estudo:
Risk_factors_studies
Limite:
Adult
/
Aged
/
Humans
/
Middle aged
Idioma:
En
Revista:
Obesity (Silver Spring)
Assunto da revista:
CIENCIAS DA NUTRICAO
/
FISIOLOGIA
/
METABOLISMO
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Finlândia