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2020 Fiscal Year Final Research Report

Development of ultrasound-responsive nanobubbles containing genome editing tools and establishment of disease treatment system

Research Project

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Project/Area Number 18H03552
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 90130:Medical systems-related
Research InstitutionTokyo University of Pharmacy and Life Science

Principal Investigator

Negishi Yoichi  東京薬科大学, 薬学部, 教授 (50286978)

Co-Investigator(Kenkyū-buntansha) 吉川 大和  東京薬科大学, 薬学部, 准教授 (20274227)
丸山 一雄  帝京大学, 薬学部, 特任教授 (30130040)
高橋 葉子 (遠藤葉子)  東京薬科大学, 薬学部, 助教 (30453806)
Project Period (FY) 2018-04-01 – 2021-03-31
Keywordsナノバブル / 超音波 / ドラッグデリバリーシステム / ゲノム編集 / 筋ジストロフィー
Outline of Final Research Achievements

In the treatment of Duchenne muscular dystrophy (DMD) disease, methods of introducing genome-editing systems into muscle tissue that enable permanent gene editing are considered to be important. In this study, we successfully delivered and introduced the CRISPR-Cas9 system into the skeletal muscle tissue of a DMD model mouse using ultrasound-responsive nanobubbles. In fact, the CRISPR-Cas9 system restored the expression of the defective dystrophin protein not only as an expression plasmid vector but also when introduced as RNA molecules (Cas9mRNA/sgRNA). Therefore, this delivery system using nanobubble is expected to be a useful tool in DMD gene therapy based on genome editing.

Free Research Field

ドラッグデリバリーシステム

Academic Significance and Societal Importance of the Research Achievements

DMDモデルマウスを利用した治療研究において,超音波応答性ナノバブルにより,CRISPR/Cas9システムを細胞内送達させ,実際に機能発現した結果は,他の遺伝性疾患治療にも適用可能と考えられる.mRNA送達にも有用性を発揮できることから,がん治療や再生医療分野における新たな治療システム開発に繋がる可能性がある.本研究成果は,さらに標的リガンドを修飾したナノバブルを用いることで,疾患部位の診断と治療の一体化システム(セラノスティクス)の構築に繋がることから,学術的及び社会的にも大きな意義があると考えられる.

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Published: 2022-01-27  

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