2018 Fiscal Year Final Research Report
Specific detection of miRNA by mismatch-binding protein-mediated reverse transcription
Project/Area Number |
16K18680
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Applied microbiology
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Research Institution | Osaka Medical College |
Principal Investigator |
Fukui Kenji 大阪医科大学, 医学部, 助教 (00466038)
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Project Period (FY) |
2016-04-01 – 2019-03-31
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Keywords | ミスマッチ / タンパク質 / 逆転写 / miRNA |
Outline of Final Research Achievements |
Homologous miRNAs have only a few base differences to each other. Some of them control the expression of oncogenes; therefore, analyses of their expression profiles are important for cancer diagnosis and therapeutic strategies. In this study, we aimed to establish a simple method to identify expression patterns of homologous miRNAs by highly accurate reverse transcription using mismatch recognition proteins. From the group of functionally unknown proteins derived from extremely-thermophilic bacterium, we identified proteins capable of recognizing unpaired bases consisting of DNA / RNA hybrids. It was revealed that those proteins specifically suppress reverse transcription from mispaired primers and showed that they could be used for high-precision reverse transcription.
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Free Research Field |
蛋白質科学
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Academic Significance and Societal Importance of the Research Achievements |
癌の基礎研究、診断や治療戦略策定手順の改善は国民の福祉に関する大きな課題である。各種癌組織で特異的な発現パターンを示す相同miRNAの正確な解析は上記の課題にとって今後益々必要になると予想される。本研究では、ミスマッチ認識タンパク質を利用することで、相同miRNA発現パターンの簡便な解析方法の構築を目指した。まず、複数のミスマッチ認識タンパク質を新たに同定する事に成功した。さらに、これらのタンパク質が逆転写反応の高精度化に有効であることを示した。今後、この手法をさらに発展させることが出来れば癌に関する基礎研究や診断手法の前進に貢献できる可能性がある。
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