Analysis of gene expression mechanism regulated by nutrition signal using in vivo imaging
Project/Area Number |
17H05060
|
Research Category |
Grant-in-Aid for Young Scientists (A)
|
Allocation Type | Single-year Grants |
Research Field |
Environmental physiology(including physical medicine and nutritional physiology)
|
Research Institution | University of Tsukuba |
Principal Investigator |
|
Project Period (FY) |
2017-04-01 – 2020-03-31
|
Project Status |
Completed (Fiscal Year 2019)
|
Budget Amount *help |
¥19,890,000 (Direct Cost: ¥15,300,000、Indirect Cost: ¥4,590,000)
Fiscal Year 2019: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2018: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
Fiscal Year 2017: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
|
Keywords | 栄養代謝 / 脂質代謝 / 転写 |
Outline of Final Research Achievements |
In order to analyze the detailed mechanism of SREBP-1c gene regulation in vivo, which is important for the regulation of lipid synthesis in liver, I developed the cis sequence identification method using adenovirus reporter vector and in vivo imaging system (in vivo Ad-Luc). Simultaneously, I also applied the trans factor identification method through Transcription Factor Expression plasmid Library "TFEL" (TFEL scan) and found that KLF15 is important for the regulation of SREBP-1c expression in liver. It is known that KLF15 expression is upregulated during fasting, however, its regulatory mechanism has not yet been revealed. Therefore I investigated the regulatory mechanism of hepatic KLF15 gene expression by in vivo Ad-luc method and TFEL, and found new genomic region that important for KLF15 gene regulation during fasting and an important transcription factors binding to the region.
|
Academic Significance and Societal Importance of the Research Achievements |
本研究において、研究代表者が独自に開発した、生体での遺伝子発現調節機構の網羅的解析手法にて、肝臓において栄養状態により発現が変動するKLF15遺伝子の新たな調節機構を世界で初めて明らかにすることに成功した。現在、その研究結果をまとめ国際的な学術雑誌に論文として投稿する準備を進めている。肝臓でのKLF15は糖代謝や脂質代謝異常に関する治療のターゲットとなりうることが示されているため、本研究によって見出されたKLF15遺伝子の新たな発現調節機構を軸として、画期的な生活習慣病の治療法が確立されることが期待できる。
|
Report
(4 results)
Research Products
(40 results)
-
-
-
-
-
-
-
-
[Journal Article] Transgenic Mice Overexpressing SREBP-1a in Male ob/ob Mice Exhibit Lipodystrophy and Exacerbate Insulin Resistance.2018
Author(s)
Ohno H, Matsuzaka T, Tang N, Sharma R, Motomura K, Shimura T, Satoh A, Han SI, Takeuchi Y, Aita Y, Iwasaki H, Yatoh S, Suzuki H, Sekiya M, Nakagawa Y, Sone H, Yahagi N, Yamada N, Higami Y, Shimano H.
-
Journal Title
Endocrinology.
Volume: 159(6)
Issue: 6
Pages: 2308-2323
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
-
[Journal Article] A candidate functional SNP rs7074440 in TCF7L2 alters gene expression through C-FOS in hepatocytes.2018
Author(s)
Piao X, Yahagi N, Takeuchi Y, Aita Y, Murayama Y, Sawada Y, Shikama A, Masuda Y, Nishi-Tatsumi M, Kubota M, Izumida Y, Sekiya M, Matsuzaka T, Nakagawa Y, Sugano Y, Iwasaki H, Kobayashi K, Yatoh S, Suzuki H, Yagyu H, Kawakami Y, Shimano H.
-
Journal Title
FEBS Lett.
Volume: 592(3)
Issue: 3
Pages: 422-433
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
-
-
-
[Journal Article] A key role of nuclear factor Y in the refeeding response of fatty acid synthase in adipocytes.2017
Author(s)
Nishi-Tatsumi M, Yahagi N, Takeuchi Y, Toya N, Takarada A, Murayama Y, Aita Y, Sawada Y, Piao X, Oya Y, Shikama A, Masuda Y, Kubota M, Izumida Y, Matsuzaka T, Nakagawa Y, Sekiya M, Iizuka Y, Kawakami Y, Kadowaki T, Yamada N, Shimano H.
-
Journal Title
FEBS Lett
Volume: 591
Issue: 7
Pages: 965-978
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
-
[Presentation] Hepatic KLF15 is involved in lipogenesis via inhibitory effect on SREBP-1c promoter during fasting.2019
Author(s)
Yoshinori Takeuchi, Naoya Yahagi, Yuichi Aita, Yuki Murayama, Mehrazad Saber Zahra, Ho Man Hei, Nobuhiro Wada, EnXu Li, Yiren Huyan, Yukari Masuda, Yoshihiko Izumida, Hitoshi Shimano
Organizer
IDF Congress 2019
Related Report
Int'l Joint Research
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-