MicroRNA associated with prognostic factor in glioma
Project/Area Number |
22591610
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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 |
Cerebral neurosurgery
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Research Institution | Kobe University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
NISHIHARA Masamitsu 神戸大学, 医学部, 医学研究員 (20452493)
|
Project Period (FY) |
2010 – 2012
|
Project Status |
Completed (Fiscal Year 2012)
|
Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
|
Keywords | グリオーマ / マイクロ RNA / マイクロRNA / miR-183 / マイクロRNA / イソクエン酸脱水素酵素 / 予後 |
Research Abstract |
MicroRNAs (miRs) are small, non-coding RNAs that regulate geneexpression and contribute to cell proliferation, differentiation and metabolism. Our previous study revealed the extensive modulation of a set of miRs in malignant glioma. In that study, miR microarray analysis demonstrated the upregulation of microRNA-183 (miR-183) in glioblastomas. Therefore, we examined the expression levels of miR-183 in various types of gliomas and the association of miR-183 with isocitrate dehydrogenase 2 (IDH2), which has complementary sequences to miR-183 in its 3’-untranslated region (3’UTR). In present study, we used real-time PCR analysis to demonstrate that miR-183 is upregulated in the majority of high-grade gliomas and glioma cell lines compared with peripheral, non-tumorous brain tissue. The mRNA and protein expression levels of IDH2 are downregulated via the overexpression of miR-183 mimic RNA in glioma cells. Additionally, IDH2 mRNA expression is upregulated in glioma cells expressing anti-miR-183. We verified that miR-183 directly affects IDH2 mRNA levels in glioma cells using luciferase assays. In malignant glioma specimens, the expression levels of IDH2 were lower in tumors than in the peripheral, non-tumorous brain tissues. HIF-1αlevels were upregulated in glioma cells following transfectionwith miR-183 mimic RNA or IDH2 siRNA. Moreover, vascular endothelial growth factor (VEGF) and glucose transporter 1 (GLUT1), which are downstream molecules of HIF-1α, were upregulated in cells transfected with miR-183 mimic RNA.These results suggest that miR-183 upregulation in malignant gliomas induces HIF-1αexpression by targeting IDH2 and may play a role in glioma biology.
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Report
(4 results)
Research Products
(23 results)
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[Journal Article]2013
Author(s)
Nakamizo S, Sasayama T, Shinohara M, Irino Y, Nishiumi S, Nishihara M, Tanaka H, Tanaka K, Mizukawa K, Itoh T, Taniguchi M, Hosoda K, Yoshida M, Kohmura E
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Journal Title
J Neurooncol
Volume: 113(1)
Issue: 1
Pages: 65-74
DOI
Related Report
Peer Reviewed
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[Journal Article]2013
Author(s)
Tanaka H, Sasayama T, Tanaka K, Nakamizo S, Nishihara M, Mizukawa K, Kohta M, Koyama J, Miyake S, Taniguchi M, Hosoda K, Kohmura E
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Journal Title
J Neurooncol
Volume: 111(3)
Issue: 3
Pages: 273-83
DOI
Related Report
Peer Reviewed
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[Journal Article]2013
Author(s)
Taniguchi M, Nishihara M, Sasayama T, Takahashi Y, Kohmura E
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Journal Title
Neuropathol Appl Neurobiol
Volume: 39(4)
Issue: 4
Pages: 445-8
DOI
Related Report
Peer Reviewed
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[Journal Article]2013
Author(s)
Akhavan D, Pourzia AL, Nourian AA, Williams KJ, Nathanson D, Babic I, Villa GR, Tanaka K, Nael A, Yang H, Dang J, Vinters HV, Yong WH, Flagg M, Tamanoi F, Sasayama T, James CD, Kornblum HI, Cloughesy TF, Cavenee WK, Bensinger SJ, Mischel PS
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Journal Title
Cancer Discov
Volume: 3(5)
Pages: 534-547
Related Report
Peer Reviewed
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[Journal Article]2013
Author(s)
Ishii T, Mizukawa K, Sasayama T, Sasaki H, Hayashi S, Nakamizo S, Tanaka H, Tanaka K, Hara S, Hirai C, Itoh T, Kohmura E
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Journal Title
Neuropathology
Volume: 33(3)
Issue: 3
Pages: 299-305
DOI
Related Report
Peer Reviewed
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[Journal Article]2012
Author(s)
Sasayama T, Nakamizo S, Nishihara M, Kawamura A, Tanaka H, Mizukawa K, Miyake S, Taniguchi M, Hosoda K, Kohmura E
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Journal Title
Neuro Oncol
Volume: 14(3)
Issue: 3
Pages: 368-80
DOI
Related Report
Peer Reviewed
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[Journal Article]2010
Author(s)
Ozawa T, Brennan CW, Wang L, Squatrito M, Sasayama T, Nakada M, Huse JT, Pedraza A, Utsuki S, Yasui Y, Tandon A, Fomchenko EI, Oka H, Levine RL, Fujii K, Ladanyi M, Holland EC
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Journal Title
Genes Dev
Volume: 24(19)
Issue: 19
Pages: 2205-18
DOI
Related Report
Peer Reviewed
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