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Regulation of intestinal microenvironment networks by polyamine nanoparticles and its application to the treatment of inflammatory bowel disease

Research Project

Project/Area Number 22K19947
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 90:Biomedical engineering and related fields
Research InstitutionNational Institute for Materials Science

Principal Investigator

NISHIGUCHI Akihiro  国立研究開発法人物質・材料研究機構, 高分子・バイオ材料研究センター, 主幹研究員 (10784944)

Project Period (FY) 2022-06-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2023: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2022: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywordsポリアミン / 免疫制御 / 炎症性疾患 / ナノ粒子 / 生体適合性
Outline of Research at the Start

炎症性腸疾患は、腸管免疫の異常亢進によって下痢や血便を引き起こす難治性の自己免疫疾患であるが、既存の薬物療法は治療効果が不十分であり、全身性の副作用が問題である。本研究では、粘膜・免疫細胞・腸内細菌叢・神経が織りなす腸管微小環境ネットワークを制御するポリアミンナノ粒子を開発し、炎症性腸疾患治療へ応用する。ポリアミンをナノ粒子化することで、酵素耐性および大腸集積性を向上させ、原因物質である酸化ストレスを除去し、炎症性疾患の治癒に向けた基盤技術を確立する。

Outline of Final Research Achievements

Inflammatory bowel diseases including ulcerative colitis and Crohn's disease are intractable autoimmune diseases causing diarrhea and bloody stools due to abnormal enhancement of intestinal immunity. Conventional drug therapies have systemic side effects. We aimed to develop polyamine nanoparticles that regulate the intestinal microenvironmental networks and apply them to the treatment of inflammatory bowel disease. Polyamine nanoparticles composed of polyamine and hyaluronic acid with anti-inflammatory functions were developed. The relationship between molecular structure and ROS scavenging function was clarified to develop nanoparticles that control the intestinal microenvironmental networks.

Academic Significance and Societal Importance of the Research Achievements

本研究では、潰瘍性大腸炎の治療薬として経口投与可能な抗炎症性ポリアミンナノ粒子を開発した。高い生体適合性と活性酸素消去活性を持つポリアミンをベースとしたナノメディンは、炎症性疾患の治療のための抗炎症薬として有用であると期待される。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (2 results)

All 2023

All Journal Article (2 results) (of which Peer Reviewed: 1 results)

  • [Journal Article] Inflammation-targeting polyamine nanomedicines for the treatment of ulcerative colitis2023

    • Author(s)
      Nishiguchi Akihiro、Taguchi Tetsushi
    • Journal Title

      Journal of Materials Chemistry B

      Volume: 11 Issue: 18 Pages: 4005-4013

    • DOI

      10.1039/d3tb00424d

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 生体機能化ポリマーによる免疫細胞機能制御2023

    • Author(s)
      西口昭広、田口哲志
    • Journal Title

      Drug Delivery System

      Volume: 38 Pages: 379-387

    • Related Report
      2023 Annual Research Report

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Published: 2022-07-05   Modified: 2025-01-30  

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