2013 Fiscal Year Final Research Report
Role of endoplasmic reticulum stress induced eIF2alpha phosphorylation in skeletal muscle after exercise
| Project/Area Number |
24700698
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Sports science
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| Research Institution | The University of Tokushima |
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Principal Investigator |
MIYAKE Masato 徳島大学, 疾患プロテオゲノム研究センター, 助教 (30588976)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 骨格筋 / 肥満 / 小胞体 / エネルギー消費 / 褐色脂肪 / ホルモン / 臓器連関 |
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| Research Abstract |
In skeletal muscle, some physiological stimulation, for example exercise activated PERK-eIF2alpha phosphorylation signal. Fv2E-PERK is artificial gene that is activated by ligand. We generated muscle-specific Fv2E-PERK expressing transgenic (TG) mice. Adiposity of TG mice fed high-fat diet was decreased compared from wild type. TG mice also improved insulin sensitivity and oxygen consumption. However, metabolic profile in skeletal muscle seemed to be same between wild type and TG mice. Surprisingly, gene expression related to energy expenditure was higher in brown adipose tissue of TG mice than in that of wild type mice. Some experiments showed that PERK-eIF2alpha phosphorylation single regulated anti obesity hormone FGF21 expression in skeletal muscle. Plasma concentration of FGF21 also increased in TG mice. These results suggest that FGF21 induced by eIF2alpha phosphorylation in skeletal muscle increases energy expenditure by affecting on brown adipose tissue.
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[Journal Article] Effect of myostatin on chemokine expression in regenerating skeletal muscle cells2013
Author(s)
Shunsuke Iwasaki, Masato Miyake, Shinichiro Hayashi, Hitoshi Watanabe, Yuya Nagasawa, Shunsuke Terada, Kouichi Watanabe, Shyuichi Ohwada, Haruki Kitazawa, Michael T. Rose, Hisashi Aso
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Journal Title
Cells Tissues Organ
Volume: 198
Pages: 66-74
DOI
Peer Reviewed
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[Presentation] eIF2αPhosphorylation in Skeletal Muscle Increases FGF21 Expression as a Myokine and Prevents Diet-Induced Obesity by Increasing Energy Expenditure2013
Author(s)
Masato Miyake, Akitoshi Nomura, Atsushi Ogura, Kazuna Takahara, Kiyoe Kurahashi, Ryosuke Sato, Miho Oyadomari, Hiroshi Inoue, Seiichi Oyadomari
Organizer
American Diabetes Association 73th Scientific Session
Place of Presentation
McCormick Place (Chicago, Illinois, USA)
Year and Date
2013-06-24
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