Activin E enhances insulin sensitivity and thermogenesis by activating brown/beige adipocytes. 2019

Kazunari Sekiyama, and Yuuki Ushiro, and Akira Kurisaki, and Masayuki Funaba, and Osamu Hashimoto
Faculty of Veterinary Medicine, Kitasato University, School of Veterinary Medicine, Towada, Aomori 034-8628, Japan.

Activin E, a secreted peptide encoded by the inhibin/activin βE subunit gene, is a member of the transforming growth factor-β superfamily, which is predominantly expressed in the liver. Recent reports have suggested that activin E plays a role in energy homeostasis as a hepatokine. Here, using transgenic mice overexpressing activin E under the control of the β-actin promoter, we demonstrate that activin E controls energy metabolism through brown/beige adipocytes. The glucose tolerance test and insulin tolerance test showed that the insulin sensitivity was improved in the transgenic mice. Furthermore, the mice had a high body temperature compared with wild-type mice. The transgenic brown adipose tissue and mesenteric white adipose tissue showed upregulation of uncoupling protein 1, which enables energy dissipation as heat by uncoupling oxidative phosphorylation from ATP production. Present results indicate that activin E activates energy expenditure through brown/beige adipocyte activation, suggesting that activin E has high potential for obesity therapy.

UI MeSH Term Description Entries
D007333 Insulin Resistance Diminished effectiveness of INSULIN in lowering blood sugar levels: requiring the use of 200 units or more of insulin per day to prevent HYPERGLYCEMIA or KETOSIS. Insulin Sensitivity,Resistance, Insulin,Sensitivity, Insulin
D008810 Mice, Inbred C57BL One of the first INBRED MOUSE STRAINS to be sequenced. This strain is commonly used as genetic background for transgenic mouse models. Refractory to many tumors, this strain is also preferred model for studying role of genetic variations in development of diseases. Mice, C57BL,Mouse, C57BL,Mouse, Inbred C57BL,C57BL Mice,C57BL Mice, Inbred,C57BL Mouse,C57BL Mouse, Inbred,Inbred C57BL Mice,Inbred C57BL Mouse
D008822 Mice, Transgenic Laboratory mice that have been produced from a genetically manipulated EGG or EMBRYO, MAMMALIAN. Transgenic Mice,Founder Mice, Transgenic,Mouse, Founder, Transgenic,Mouse, Transgenic,Mice, Transgenic Founder,Transgenic Founder Mice,Transgenic Mouse
D001831 Body Temperature The measure of the level of heat of a human or animal. Organ Temperature,Body Temperatures,Organ Temperatures,Temperature, Body,Temperature, Organ,Temperatures, Body,Temperatures, Organ
D002001 Adipose Tissue, Brown A thermogenic form of adipose tissue composed of BROWN ADIPOCYTES. It is found in newborns of many species including humans, and in hibernating mammals. Brown fat is richly vascularized, innervated, and densely packed with MITOCHONDRIA which can generate heat directly from the stored lipids. Brown Fat,Hibernating Gland,Brown Adipose Tissue,Fat, Brown,Tissue, Brown Adipose
D004734 Energy Metabolism The chemical reactions involved in the production and utilization of various forms of energy in cells. Bioenergetics,Energy Expenditure,Bioenergetic,Energy Expenditures,Energy Metabolisms,Expenditure, Energy,Expenditures, Energy,Metabolism, Energy,Metabolisms, Energy
D000069797 Adipocytes, Beige Brown fat-like cells that develop in the WHITE FAT from non-MYOGENIC REGULATORY FACTOR 5 expressing CELL LINEAGE. Adipocytes, Brite,Beige Brite Adipocytes,Beige Brite Cells,Beige Fat Cells,Brite Fat Cells,Adipocyte, Beige,Adipocyte, Beige Brite,Adipocyte, Brite,Adipocytes, Beige Brite,Beige Adipocyte,Beige Adipocytes,Beige Brite Adipocyte,Beige Brite Cell,Beige Fat Cell,Brite Adipocyte,Brite Adipocyte, Beige,Brite Adipocytes,Brite Adipocytes, Beige,Brite Cell, Beige,Brite Cells, Beige,Brite Fat Cell,Cell, Beige Brite,Cell, Beige Fat,Cell, Brite Fat,Cells, Beige Brite,Cells, Beige Fat,Cells, Brite Fat,Fat Cell, Beige,Fat Cell, Brite,Fat Cells, Beige,Fat Cells, Brite
D000071256 Uncoupling Protein 1 A mitochondrial uncoupling protein that is expressed in BROWN ADIPOSE TISSUE. It is critical for NONSHIVERING THERMOGENESIS to prevent heat loss in NEONATES. BAT Uncoupling Protein,Brown Adipose Tissue Uncoupling Protein,Mitochondrial Brown Fat Uncoupling Protein 1,Mitochondrial Uncoupling Protein,SLC25A7 Protein,Solute Carrier Family 25 Member 7,Thermogenin,UCP1 Protein,Uncoupling Protein 1a,Uncoupling Protein, Mitochondrial Membrane,Uncoupling Protein, BAT,Uncoupling Protein, Mitochondrial
D000199 Actins Filamentous proteins that are the main constituent of the thin filaments of muscle fibers. The filaments (known also as filamentous or F-actin) can be dissociated into their globular subunits; each subunit is composed of a single polypeptide 375 amino acids long. This is known as globular or G-actin. In conjunction with MYOSINS, actin is responsible for the contraction and relaxation of muscle. F-Actin,G-Actin,Actin,Isoactin,N-Actin,alpha-Actin,alpha-Isoactin,beta-Actin,gamma-Actin,F Actin,G Actin,N Actin,alpha Actin,alpha Isoactin,beta Actin,gamma Actin
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

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