Hepatic SerpinA1 improves energy and glucose metabolism through regulation of preadipocyte proliferation and UCP1 expression
Journal Article
·
· Nature Communications
- Kumamoto University (Japan)
- Harvard Medical School, Boston, MA (United States)
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Lipodystrophy and obesity are associated with insulin resistance and metabolic syndrome accompanied by fat tissue dysregulation. Here, we show that serine protease inhibitor A1 (SerpinA1) expression in the liver is increased during recovery from lipodystrophy caused by the adipocyte-specific loss of insulin signaling in mice. SerpinA1 induces the proliferation of white and brown preadipocytes and increases the expression of uncoupling protein 1 (UCP1) to promote mitochondrial activation in mature white and brown adipocytes. Liver-specific SerpinA1 transgenic mice exhibit increased browning of adipose tissues, leading to increased energy expenditure, reduced adiposity and improved glucose tolerance. Conversely, SerpinA1 knockout mice exhibit decreased adipocyte mitochondrial function, impaired thermogenesis, obesity, and systemic insulin resistance. SerpinA1 forms a complex with the Eph receptor B2 and regulates its downstream signaling in adipocytes. These results demonstrate that SerpinA1 is an important hepatokine that improves obesity, energy expenditure and glucose metabolism by promoting preadipocyte proliferation and activating mitochondrial UCP1 expression in adipocytes.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- Japan Agency for Medical Research and Development (AMED); Japan Society for the Promotion of Science (JSPS) KAKENHI; National Institutes of Health (NIH); USDOE
- Grant/Contract Number:
- AC05-76RL01830
- OSTI ID:
- 2543014
- Report Number(s):
- PNNL-SA--193874
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 15; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Anti-obesity potential of Glycyrrhiza uralensis and licochalcone A through induction of adipocyte browning
HDAC6 regulates thermogenesis of brown adipocytes through activating PKA to induce UCP1 expression
The pesticide chlorpyrifos promotes obesity by inhibiting diet-induced thermogenesis in brown adipose tissue
Journal Article
·
Sat Sep 15 00:00:00 EDT 2018
· Biochemical and Biophysical Research Communications
·
OSTI ID:23105527
HDAC6 regulates thermogenesis of brown adipocytes through activating PKA to induce UCP1 expression
Journal Article
·
Sat Sep 15 00:00:00 EDT 2018
· Biochemical and Biophysical Research Communications
·
OSTI ID:23105708
The pesticide chlorpyrifos promotes obesity by inhibiting diet-induced thermogenesis in brown adipose tissue
Journal Article
·
Thu Aug 26 20:00:00 EDT 2021
· Nature Communications
·
OSTI ID:2469593