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2019 Fiscal Year Final Research Report

The combined cancer therapy of drug delivery and boron neutron capture therapy by boron-containing nanoparticles

Research Project

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Project/Area Number 17H02738
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Nanomaterials chemistry
Research InstitutionKyoto University

Principal Investigator

Komatsu Naoki  京都大学, 人間・環境学研究科, 教授 (30253008)

Co-Investigator(Kenkyū-buntansha) 鈴木 実  京都大学, 複合原子力科学研究所, 教授 (00319724)
石川 善恵  国立研究開発法人産業技術総合研究所, 材料・化学領域, 主任研究員 (20509129)
天野 創  滋賀医科大学, 医学部, 助教 (20613467)
Project Period (FY) 2017-04-01 – 2020-03-31
Keywordsがん / ホウ素 / 中性子 / 治療 / ナノ粒子
Outline of Final Research Achievements

In the cancer therapy by boron neutron capture therapy (BNCT), we need to establish efficient and selective delivery of boron-based drug to tumor. The cancer treatment by BNCT reported so far is not so efficient because of low dispersibility and/or low selectivity. In our research, we successfully prepared boron-containing nanoparticles (B-NP) functionalized with polyglycerol; (PG), characterized structure of the resulting B-NP-PG, and found its high dispersibility. We then injected B-NP-PG to cancered mice, irradiated neutron, and monitored the tumor size for a month. We saw the clear inhibition of the tumor growth rate.

Free Research Field

材料化学

Academic Significance and Societal Importance of the Research Achievements

BNCT において、中性子は人体に取ってほとんど無害であり、また、ホウ素が崩壊して生成するα線やリチウム原子の飛程は、数十μmであり、腫瘍近傍の健全な細胞を殺傷することはない。したがって、今回、B-NP-PGを用いて得られた結果は、副作用のない、非侵襲的ながんの治療法としての BNCT のより効率的な治療に繋がる可能性があり、学術的のみならず、社会的にも大きな意義があると考えられる。

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Published: 2021-02-19   Modified: 2023-01-30  

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