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Development of highly functional microneedles composed of microparticles

Research Project

Project/Area Number 18K14109
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 28050:Nano/micro-systems-related
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Hirama Hirotada  国立研究開発法人産業技術総合研究所, 情報・人間工学領域, 主任研究員 (40748779)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsマイクロニードル / マイクロ流路 / 微粒子 / 液滴 / マイクロカプセル / ゲル微粒子 / マイクロ流体工学
Outline of Final Research Achievements

We have developed a highly functional dissolvable microneedle (MN) that can immobilize and sustain the release of highly concentrated drugs using drug-containing microparticles as a component material. In this study, we first prepared water-soluble (no gelation) and monodisperse sodium hyaluronate microparticles that encapsulate high concentrations of drugs by using a solvent removal method from droplets by osmotic pressure difference. Then, MNs were fabricated by adding the fabricated microparticles to a biodegradable polymer and molding it into a needle shape. The fabricated MNs were shown to have the ability to penetrate the stratum corneum and release drugs over time in a simulated biological environment.

Academic Significance and Societal Importance of the Research Achievements

作製したヒアルロン酸ナトリウム微粒子は、ゲル化せずに固化していることから、ゲル化剤由来の毒性を回避することができる。また、今回の作製手法を利用することで、飽和溶解度以上の濃度まで、希少サンプル(溶質)を含む水溶液(液滴)を濃縮し、微粒子に固定することができる。本研究で開発した微粒子および溶解性マイクロニードルは、ドラッグデリバリーシステムやコスメティクスなどにおいて、薬剤や化粧品成分を体内に効率よく導入する手段として応用されることが期待される。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (7 results)

All 2021 2020 2019 Other

All Presentation (5 results) (of which Int'l Joint Research: 2 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Presentation] MICROCAPSULES WITH CONCENTRATED DRUG FOR DISSOLVING MICRONEEDLES2021

    • Author(s)
      Hirotada Hirama, Yuya Ishikura, Masanori Hayase, Harutaka Mekaru
    • Organizer
      The 34th International Conference on Micro Electro Mechanical Systems
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 高濃縮カプセル内包生分解性マイクロニードルの特性評価2020

    • Author(s)
      石倉悠矢、早瀬仁則、平間宏忠
    • Organizer
      化学とマイクロ・ナノシステム学会 第42回研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Formation of high-concentration-drug-containing microcapsule for dissolving microneedles2019

    • Author(s)
      Yuya Ishikura, Masanori Hayase, and Hirotada Hirama
    • Organizer
      The 11th International Symposium on Microchemistry and Microsystems
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 粒子内包溶解性マイクロニードルの開発に向けた高濃度薬剤カプセルの作製2019

    • Author(s)
      石倉悠矢、早瀬仁則、平間宏忠
    • Organizer
      化学とマイクロ・ナノシステム学会 第39回研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] 粒子内包溶解性マイクロニードルの作製プロセス開発2019

    • Author(s)
      石倉悠矢、早瀬仁則、平間宏忠
    • Organizer
      化学とマイクロ・ナノシステム学会 第40回研究会
    • Related Report
      2019 Research-status Report
  • [Remarks] 国立研究開発法人産業技術総合研究所センシングシステム研究センターHP

    • URL

      https://unit.aist.go.jp/ssrc/index.html

    • Related Report
      2018 Research-status Report
  • [Patent(Industrial Property Rights)] マイクロニードルおよびその製造方法2019

    • Inventor(s)
      平間宏忠
    • Industrial Property Rights Holder
      国立研究開発法人産業技術総合研究所
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-089922
    • Filing Date
      2019
    • Related Report
      2019 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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