2008 Fiscal Year Final Research Report
Effect of cPLA_2 inhibition on improvement of glucose tolerance through PPARγ activation
Project/Area Number |
19591056
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Metabolomics
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Research Institution | Kumamoto University |
Principal Investigator |
MATSUMURA Takeshi Kumamoto University, 医学部・附属病院, 医員 (20398192)
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Co-Investigator(Kenkyū-buntansha) |
MIYAMURA Nobuhiro 熊本大学, 医学部・附属病院, 講師 (40274716)
MOTOSHIMA Hiroyuki 熊本大学, 医学部・附属病院, 医員 (40398201)
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Co-Investigator(Renkei-kenkyūsha) |
NISHIKAWA Takeshi 熊本大学, 医学部・附属病院, 助教 (70336212)
|
Project Period (FY) |
2007 – 2008
|
Keywords | cPLA_2 / 脂肪細胞 / マクロファージ / インスリン抵抗性 / 糖尿病 / PPARγ |
Research Abstract |
本研究は、cytosolic phospholipase A_2(cPLA_2)の制御によるPPARγ活性化の機序を解明し、その効果を介したインスリン抵抗性改善作用の有無を探求することを目的とし検討を行った。その結果、cPLA_2の阻害がマクロファージあるいは脂肪細胞においてCOX-2産生増加を介してPPARγの活性化を誘導すること、脂肪細胞分化誘導を促進すること、さらに高脂肪食負荷マウスの耐糖能を改善することを見出した。これらの成果は、cPLA_2が2型糖尿病治療の標的分子であると共に、cPLA_2阻害剤が糖尿病治療に有益である可能性を示唆している。
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[Journal Article] Ox-LDL activates PPARα and PPARγ through MAPK-dependent COX-2 expression in macrophages2008
Author(s)
Taketa K, Matsumura T, Yano M, Ishii N, Senokuchi T, Motoshima H, Murata Y, Kim-Mitsuyama S, Kawada T, Itabe H, Takeya M, Nishikawa T, Tsuruzoe K, Araki E
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Journal Title
J Biol Chem 283
Pages: 9852-9862
Peer Reviewed
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[Journal Article] Endothelial MnSOD overexpression prevents retinal VEGF expression in diabetic mice2008
Author(s)
Goto H, Nishikawa T, Sonoda K, Kondo T, Kukidome D, Fujisawa K, Yamashiro T, Motoshima H, Matsumura T, Tsuruzoe K, Araki E
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Journal Title
Biochem Biophys Res Commun 366
Pages: 814-820
Peer Reviewed
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[Journal Article] Rottlerin activates AMPK possibly through LKB1 in vascular cells and tissues2008
Author(s)
Kojima K, Motoshima H, Tsutsumi A, Igata M, Matsumura T, Kondo T, Kawashima J, Ichinose K, Furukawa N, Inukai K, Katayama S, Goldstein BJ, Nishikawa T, Tsuruzoe K, Araki E
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Journal Title
Biochem Biophys Res Commun 376
Pages: 434-438
Peer Reviewed
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[Journal Article] Statins activate peroxisome proliferator-activated receptor-γ through extracellular signal-regulated kinase 1/2 and p38 mitogen-activated protein kinase-dependent cyclooxygenase-2 expression in macrophages2007
Author(s)
Yano M, Matsumura T, Senokuchi T, Ishii N, Murata Y, Taketa K, Motoshima H, Taguchi T, Sonoda K, Kukidome D, Takuwa Y, Kawada T, Brownlee M, Nishikawa T, Araki E
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Journal Title
Circ Res 100
Pages: 1442-1451
Peer Reviewed
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[Journal Article] Troglitazone inhibits oxidized low-density lipoprotein-induced macrophage proliferation : impact of the suppression of nuclear translocation of ERK1/22007
Author(s)
Yano M, Matsumura T, Senokuchi T, Ishii N, Motoshima H, Taguchi T, Matsuo T, Sonoda K, Kukidome D, Sakai M, Kawada T, Nishikawa N, Araki E
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Journal Title
Atherosclerosis 191
Pages: 22-32
Peer Reviewed
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[Journal Article] High glucose increases angiopoietin-2 transcription in microvascular endothelial cellsthrough methylglyoxal modification of mSin3A2007
Author(s)
Yao D, Taguchi T, Matsumura T, Pestell R, Edelstein D, Giardino I, Suske G, Rabbani N, Thornalley PJ, Sarthy VP, Hammes HP, Brownlee M
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Journal Title
J Biol Chem 282
Pages: 31038-31045
Peer Reviewed
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