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2020 Fiscal Year Final Research Report

Development of microRNA to eat: Nucleic acid as a supplement food

Research Project

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Project/Area Number 19K22287
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 38:Agricultural chemistry and related fields
Research InstitutionThe University of Tokushima

Principal Investigator

MINAKAWA Noriaki  徳島大学, 大学院医歯薬学研究部(薬学域), 教授 (40209820)

Co-Investigator(Kenkyū-buntansha) 小暮 健太朗  徳島大学, 大学院医歯薬学研究部(薬学域), 教授 (70262540)
田良島 典子  徳島大学, 大学院医歯薬学研究部(薬学域), 講師 (90755183)
Project Period (FY) 2019-06-28 – 2021-03-31
KeywordsマイクロRNA / 4'-チオRNA / 4'-セレノRNA / 機能性食品
Outline of Final Research Achievements

In this work, we examined a challenging research project of eating functional nucleic acid molecules. Although the biological evaluation was delayed due to the influence of COVID-19, we succeeded to develop two artificial RNAs (4'-selenoRNA and 4'-thioLNA/BNA) showing higher stability than 4'-thioRNA, which is originally planned to use in this project. Furthermore, we showed that 4'-selenoRNA is effective as a chemically-modified siRNA. By combining these artificial RNAs with exosome encapsulation technology, we expect to be able to create edible nucleic acid molecules.

Free Research Field

核酸化学

Academic Significance and Societal Importance of the Research Achievements

近年、低分子化合物にかわる医薬品として核酸が注目されている。本研究では、この核酸を食べることで健康寿命を延長させるという非常に挑戦的な研究を目指した。その結果、食することが可能と予想される安定性をもった核酸分子の創製に成功した。
またこの人工核酸は、遺伝子の発現を制御するポテンシャルを有していることも明らかとなった。

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Published: 2022-01-27  

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