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BACKGROUND: Bone morphogenetic proteins (BMPs) regulate adipogenesis but it is not clear whether they influence regional adipose tissue (AT) development in humans. OBJECTIVE: To characterise BMP2 expression, BMP2-SMAD1/5/8 signalling, and BMP2's potential effect on proliferation and adipogenesis in human subcutaneous abdominal and gluteal AT and its constituent preadipocytes. METHODS: BMP2 expression was measured in whole AT and immortalised preadipocytes via qPCR and Western blot; secreted/circulating BMP2 was measured by ELISA. The effect of BMP2 on preadipocyte proliferation was evaluated using a fluorescent assay. BMP2's effect on adipogenesis in immortalised preadipocytes was determined via qPCR of adipogenic markers and cellular triacylglycerol (TAG) accumulation. BMP2-SMAD1/5/8 signalling was assessed in immortalised preadipocytes via Western blot and qPCR of ID1 expression. RESULTS: BMP2 was expressed and released by abdominal and gluteal AT and preadipocytes. Exogenous BMP2 dose dependently promoted adipogenesis in abdominal preadipocytes only; 50 ng/ml BMP2 increased PPARG2 expression (10-fold compared to vehicle, p 90% inhibition of TAG accumulation (p 

Original publication

DOI

10.1038/s41366-019-0421-1

Type

Journal article

Journal

Int J Obes (Lond)

Publication Date

12/2019

Volume

43

Pages

2458 - 2468

Keywords

Adipocytes, Adipogenesis, Adipose Tissue, Adult, Aged, Body Mass Index, Bone Morphogenetic Protein 2, Cell Proliferation, Cells, Cultured, Female, Humans, Male, Middle Aged, Signal Transduction, Smad Proteins, Receptor-Regulated