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Apoptotic cell-mimetic anti-inflammatory polymers for the treatment of spinal cord injury

Research Project

Project/Area Number 19H04476
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 90120:Biomaterials-related
Research InstitutionNational Institute for Materials Science

Principal Investigator

EBARA Mitsuhiro  国立研究開発法人物質・材料研究機構, 機能性材料研究拠点, グループリーダー (10452393)

Co-Investigator(Kenkyū-buntansha) 田中 啓之  大阪大学, 医学系研究科, 特任教授(常勤) (00432542)
飯島 道弘  小山工業高等専門学校, 物質工学科, 教授 (40331988)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2021: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2020: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2019: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
Keywords抗炎症 / 脊髄損傷 / アポトーシス細胞 / スマートポリマー / フォスファチジルセリン / アポトーシス / MPS / ポリマー
Outline of Research at the Start

脊髄損傷は時間経過とともに病態が複雑に変化するため、それぞれの時期・病態に即した適切な治療が求められる。特に重篤な後遺症に関しては、不適切な炎症反応による二次損傷の影響の方が多いといわれている。しかしその一方で、過度なステロイド投与による抗炎症治療の効果には疑問が持たれている。そこで本申請では、生体内で日々繰り返されているアポトーシス細胞の抗炎症メカニズムに着目し、アポトーシス細胞模倣型高分子の設計と、それを用いた免疫系細胞の抗炎症誘導による脊髄損傷の早期治療効果改善法の開発を目指す。

Outline of Final Research Achievements

Phosphatidylserine (PtdSer), one of the phospholipids that the apoptotic cell exposes, has emerged for anti-inflammatory therapy via polarizing inflammatory microglia (M1) to anti-inflammatory phenotype (M2). In this study, we report microglia polarization effect of PtdSer-exposing polymeric particles (PSPs). PSPs upregulated M2 microglia and suppressed Mi1 microglia through peroxisome proliferatoractivated receptor gamma upregulation in vitro and in vivo. This study highlights the potential of PSPs for anti-inflammatory therapy.

Academic Significance and Societal Importance of the Research Achievements

脊髄損傷の治療には、長年ステロイド剤などが用いられてきたが、近年その効果に疑問が持たれるようになってきている。実際に、脊髄損傷治療のゴールドスタンダードとされていたメチルプレドニゾロン投与は、2013年にはアメリカ神経外科医協会のガイドラインでもその使用停止が勧告されている。本研究で開発したアポトーシス細胞膜模倣高分子は、やみくもに炎症を抑えるだけでなく、炎症環境を整える効果があり、さらに脊髄損傷の組織治療促進効果に高い期待が持てるため、今までにない脊髄損傷の治療法としてその学術的意義および社会的意義は高い。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (17 results)

All 2022 2021 Other

All Journal Article (9 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 5 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Remarks (2 results)

  • [Journal Article] Microglial Immunoregulation by Apoptotic Cellular Membrane Mimetic Polymeric Particles2022

    • Author(s)
      Nakagawa Yasuhiro、Lee Jeonggyu、Liu Yihua、Abbasi Saed、Hong Taehun、Cabral Horacio、Uchida Satoshi、Ebara Mitsuhiro
    • Journal Title

      ACS Macro Letters

      Volume: 11 Issue: 2 Pages: 270-275

    • DOI

      10.1021/acsmacrolett.1c00643

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Efficacy of Nanofiber Sheets Incorporating Lenvatinib in a Hepatocellular Carcinoma Xenograft Model2022

    • Author(s)
      Yoshida Terufumi、Kaibori Masaki、Fujisawa Nanami、Ishizuka Mariko、Sumiyama Fusao、Hatta Masahiko、Kosaka Hisashi、Matsui Kosuke、Suzuki Kensuke、Akama Tomoya O.、Katano Tayo、Yoshii Kengo、Ebara Mitsuhiro、Sekimoto Mitsugu
    • Journal Title

      Nanomaterials

      Volume: 12 Issue: 8 Pages: 1364-1364

    • DOI

      10.3390/nano12081364

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Temperature Responsive Polymer Conjugate Prepared by “Grafting from” Proteins toward the Adsorption and Removal of Uremic Toxin2022

    • Author(s)
      Yoshihara Erika、Sasaki Makoto、Nabil Ahmed、Iijima Michihiro、Ebara Mitsuhiro
    • Journal Title

      Molecules

      Volume: 27 Issue: 3 Pages: 1051-1051

    • DOI

      10.3390/molecules27031051

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] アポトーシス細胞を模倣した抗炎症ポリマーの開発2022

    • Author(s)
      荏原 充宏 田崎 朱里
    • Journal Title

      Drug Delivery System

      Volume: 37-2 Pages: 149-158

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Development of a new poly-ε-caprolactone with low melting point for creating a thermoset mask used in radiation therapy2021

    • Author(s)
      Aoyama Takahiro、Uto Koichiro、Shimizu Hidetoshi、Ebara Mitsuhiro、Kitagawa Tomoki、Tachibana Hiroyuki、Suzuki Kojiro、Kodaira Takeshi
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 20409-20409

    • DOI

      10.1038/s41598-021-00005-2

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Shape-memory balloon offering simultaneous thermo/chemotherapies to improve anti-osteosarcoma efficacy2021

    • Author(s)
      Ouchi Sosuke、Niiyama Eri、Sugo Ken、Uto Koichiro、Takenaka Satoshi、Kikuchi Akihiko、Ebara Mitsuhiro
    • Journal Title

      Biomaterials Science

      Volume: 9 Issue: 20 Pages: 6957-6965

    • DOI

      10.1039/d1bm00780g

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Temperature responsive smart polymer for enabling affinity enrichment of current coronavirus (SARS-CoV-2) to improve its diagnostic sensitivity2021

    • Author(s)
      Nabil Ahmed、Yoshihara Erika、Hironaka Keita、Hassan Ayman A.、Shiha Gamal、Ebara Mitsuhiro
    • Journal Title

      Computational and Structural Biotechnology Journal

      Volume: 19 Pages: 3609-3617

    • DOI

      10.1016/j.csbj.2021.06.016

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Diels-Alder polymer platform for thermally enhanced drug release toward efficient local cancer chemotherapy2021

    • Author(s)
      Fujisawa Nanami、Takanohashi Masato、Chen Lili、Uto Koichiro、Matsumoto Yoshitaka、Takeuchi Masayuki、Ebara Mitsuhiro
    • Journal Title

      Science and Technology of Advanced Materials

      Volume: 22 Issue: 1 Pages: 522-531

    • DOI

      10.1080/14686996.2021.1939152

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 免疫反応を制御するバイオマテリアル ~死細胞から学ぶ巧みな免疫制御システム2021

    • Author(s)
      荏原 充宏 田崎 朱里
    • Journal Title

      オレオサイエンス

      Volume: 21 Pages: 447-453

    • NAID

      130008113753

    • Related Report
      2019 Annual Research Report
  • [Presentation] Apoptotic cell-inspired nanoparticle for anti-inflammation therapy2022

    • Author(s)
      劉 懿華 荏原 充宏
    • Organizer
      つくば医工連携フォーラム2022
    • Related Report
      2021 Annual Research Report
  • [Presentation] Design of Apoptotic Cell-inspired Anti-inflammatory Polymers to Control The Inflammatory Environment in Immune Cells2021

    • Author(s)
      田崎 朱里 劉 懿華 荏原 充宏
    • Organizer
      第8回アジアバイオマテリアル学会
    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 抗炎症MPSポリマーの構造制御とミクログリア細胞の炎症環境に与える影響2021

    • Author(s)
      田崎 朱里 劉 懿華 荏原 充宏
    • Organizer
      第70回高分子討論会
    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
  • [Presentation] 脊髄損傷におけるミクログリア細胞の炎症抑制を可能にするアポトーシス細胞模倣粒子の設計2021

    • Author(s)
      田崎 朱里 劉 懿華 荏原 充宏
    • Organizer
      第37回日本DDS学会学術集会
    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
  • [Presentation] 脊髄損傷部での免疫環境を制御可能なアポトーシス細胞膜模倣高分子の設計2021

    • Author(s)
      田崎 朱里 劉 懿華 荏原 充宏
    • Organizer
      第70回高分子学会年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Apoptotic cell-mimetic nanomaterials for anti-inflammation therapy2021

    • Author(s)
      劉 懿華 荏原 充宏
    • Organizer
      第8回アジアバイオマテリアル学会
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] 荏原研究室HP

    • URL

      https://www.nims.go.jp/bmc/group/smartbiomaterials/index.html

    • Related Report
      2021 Annual Research Report 2019 Annual Research Report
  • [Remarks] 荏原研究室Facebook

    • URL

      https://www.facebook.com/EBALab/

    • Related Report
      2021 Annual Research Report 2019 Annual Research Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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