| Item type |
文献 / Documents(1) |
| 公開日 |
2024-06-11 |
| アクセス権 |
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アクセス権 |
open access |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版社版DOI |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.1074/jbc.M115.698191 |
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|
言語 |
ja |
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|
関連名称 |
10.1074/jbc.M115.698191 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| タイトル |
|
|
タイトル |
Transcriptional and Translational Modulation of myo-Inositol Oxygenase (Miox) by Fatty Acids : IMPLICATIONS IN RENAL TUBULAR INJURY INDUCED IN OBESITY AND DIABETES |
|
言語 |
en |
| タイトル別表記 |
|
|
その他のタイトル |
Miox in Obesity |
|
言語 |
en |
| 著者 |
冨永, 辰也
Dutta, Rajesh K.
Joladarashi, Darukeshwara
土井, 俊夫
Reddy, Janardan K.
Kanwar, Yashpal S.
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| 抄録 |
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|
内容記述タイプ |
Abstract |
|
内容記述 |
The kidney is one of the target organs for various metabolic diseases, including diabetes, metabolic syndrome, and obesity. Most of the metabolic studies underscore glomerular pathobiology, although the tubulo-interstitial compartment has been underemphasized. This study highlights mechanisms concerning the pathobiology of tubular injury in the context of myoinositol oxygenase (Miox), a tubular enzyme. The kidneys of mice fed a high fat diet (HFD) had increased Miox expression and activity, and the latter was related to phosphorylation of serine/threonine residues. Also, expression of sterol regulatory element-binding protein1 (Srebp1) and markers of cellular/nuclear damage was increased along with accentuated apoptosis and loss of tubular brush border. Similar results were observed in cells treated with palmitate/BSA. Multiple sterol-response elements and E-box motifs were found in the miox promoter, and its activity was modulated by palmitate/BSA. Electrophoretic mobility and ChIP assays confirmed binding of Srebp to consensus sequences of the miox promoter. Exposure of palmitate/BSA-treated cells to rapamycin normalized Miox expression and prevented Srebp1 nuclear translocation. In addition, rapamycin treatment reduced p53 expression and apoptosis. Like rapamycin, srebp siRNA reduced Miox expression. Increased expression of Miox was associated with the generation of reactive oxygen species (ROS) in kidney tubules of mice fed an HFD and cell exposed to palmitate/BSA. Both miox and srebp1 siRNAs reduced generation of ROS. Collectively, these findings suggest that HFD or fatty acids modulate transcriptional, translational, and post-translational regulation of Miox expression/activity and underscore Miox being a novel target of the transcription factor Srebp1. Conceivably, activation of the mTORC1/Srebp1/Miox pathway leads to the generation of ROS culminating into tubulo-interstitial injury in states of obesity. |
|
言語 |
en |
| 書誌情報 |
en : Journal of Biological Chemistry
巻 291,
号 3,
p. 1348-1367,
発行日 2015-11-17
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| 収録物ID |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
00219258 |
| 収録物ID |
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1083351X |
| 収録物ID |
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収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA1202441X |
| 出版者 |
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|
出版者 |
American Society for Biochemistry and Molecular Biology |
|
言語 |
en |
| 出版者 |
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|
出版者 |
Elsevier |
|
言語 |
en |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
This is an open access article under the CC BY license. |
| EID |
|
|
識別子 |
311048 |
|
識別子タイプ |
URI |
| 言語 |
|
|
言語 |
eng |
jbc_291_3_1348.pdf (11.4 MB)
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