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Differentiation and Imaging of Brown Adipocytes from the Stromal Vascular Fraction of Interscapular Adipose Tissue from Newborn Mice
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BMP-TAK1 (MAP3K7) Induces Adipocyte Differentiation Through PPARγ Signaling
Yongchun Zhang1,2,3, Regis J O'Keefe4, Jennifer H Jonason1,5
1Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, New York 14642.
Journal of Cellular Biochemistry
|June 14, 2016
Summary
Transforming Growth Factor-beta-activated kinase 1 (TAK1) is crucial for adipocyte differentiation. Inhibiting TAK1 reduces lipid accumulation and improves glucose tolerance, highlighting its role in fat cell development.
Area of Science:
- Cell Biology
- Biochemistry
- Metabolism
Background:
- Bone morphogenetic proteins (BMPs) promote adipocyte differentiation via SMAD signaling.
- The function of TGF-β-activated kinase 1 (TAK1) in non-canonical BMP signaling during adipogenesis is not well understood.
Purpose of the Study:
- To investigate the role of TAK1 in adipocyte differentiation and its potential therapeutic implications.
Main Methods:
- Utilized C3H10T1/2 mesenchymal stem cells (MSCs) and 3T3-L1 preadipocytes.
- Employed TAK1 inhibition and siRNA knockdown.
- Generated adipocyte-specific TAK1 knockout mice.
- Assessed lipid accumulation, adipogenesis, weight gain, and glucose tolerance.
Main Results:
- TAK1 inhibition decreased lipid accumulation in differentiating MSCs.
- TAK1 knockdown impaired both adipocyte commitment and terminal differentiation in MSCs and 3T3-L1 cells.
- Adipocyte-specific TAK1 ablation reduced diet-induced obesity and improved glucose tolerance.
- TAK1 is essential for PPARγ transactivation, working synergistically with TAB1.
Conclusions:
- TAK1 is a critical mediator in BMP-induced adipocyte differentiation.
- Targeting TAK1 may offer therapeutic strategies for metabolic disorders like obesity and type 2 diabetes.
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