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Study on a regeneration mechanism of corneal stroma in a decellularized scaffold and on the methods to construct corneal stromal like architecture

Research Project

Project/Area Number 19H04477
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 90120:Biomaterials-related
Research InstitutionTokyo Medical and Dental University (2020-2022)
National Institute for Materials Science (2019)

Principal Investigator

kobayashi hisatoshi  東京医科歯科大学, 生体材料工学研究所, 非常勤講師 (90354266)

Co-Investigator(Kenkyū-buntansha) 橋本 良秀  東京医科歯科大学, 生体材料工学研究所, 助教 (40638384)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000)
Fiscal Year 2021: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2020: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2019: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords脱細胞角膜足場 / 再生メカニズム / 上皮化 / 細胞浸潤 / 脱細胞足場 / 角膜実質再生 / メカニズム / 角膜再生
Outline of Research at the Start

脱細胞化角膜実質足場に関して、角膜上皮との相互作用を詳細に検討し、欠損部位へ組み込んでいく手法を確立することを目的とした。これまでの研究では、脱細胞化角膜実質足場を用いた再生では、上皮細胞との相互作用が角膜実質再生に大きな影響を与える可能性が示唆されている。本研究では、脱細胞角膜実質足場の上に、分散した上皮細胞とシート上皮をそれぞれ播種し、足場と上皮細胞の境界部分の構造の変化やメタロプロテアーゼの分布などを比較評価することで角膜実質再生のメカニズムを解明することを目標とした。更に、最適な適応法を探りながら角膜上皮シートを脱細胞化角膜実質足場と組み合わせて用いる手技の有用性を検討する。

Outline of Final Research Achievements

Epithelial cells were seeded on the decellularized tissue in a perfusion culture system, and the culture was continued. We investigated the epithelial regeneration mechanism by scratching the epithelial layer and breaking the continuity. It was observed that epithelial cells migrated from the tip of the epithelium to the defect site and re-epithelialization progressed. While re-epithelialization progressed, there were some cases where progress of epithelialization was slow and cell infiltration into the parenchyma occurred. As a result of examining the expression of MMP and keratin by immunostaining, the expression of keratin was weak in the multi-layered epithelial layer on the decellularized tissue, and the expression of MMP continued. Cells that infiltrated the parenchyma showed marked expression of MMP, but no expression of keratin. It suggested that the corneal epithelium infiltrated into the parenchyma, and epigenetically changed the state of cell differentiation.

Academic Significance and Societal Importance of the Research Achievements

角膜治療の第一選択肢は献眼によるアログラフトを使用するものであるが、献眼数が少なく輸入眼に頼るのが現状である。この状況を改善するために、豚角膜から細胞成分を除去して免疫拒絶反応を低減させて人角膜治療に用いる試みがなされている。この治療は、有望であるが、未だ詳細な再生メカニズムが分かっているわけではなく、これを解き明かすことがこの治療法の信頼性の向上につながる。脱細胞組織の上皮化、および、組織内への細胞浸潤のメカニズムなどの一部が本研究より明らかになり、今後の実用化に向けた医療デバイスとしての製品デザインに資する結果が得られたことは、学術的にも、実用上に於いても大きな意義を持つものと考えられた。

Report

(3 results)
  • 2022 Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (14 results)

All 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (9 results) (of which Int'l Joint Research: 2 results,  Invited: 4 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Int'l Joint Research] Biomedical Engineering Research Center/Faculty of Engineering/Chulalongkorn University(タイ)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Re-epithelialization and remodeling of decellularized corneal matrix in a rabbit corneal epithelial wound model2019

    • Author(s)
      Hashimoto Yoshihide、Funamoto Seiichi、Sasaki Shuji、Negishi Jun、Hattori Shinya、Honda Takako、Kimura Tsuyoshi、Kobayashi Hisatoshi、Kishida Akio
    • Journal Title

      Materials Science and Engineering: C

      Volume: 102 Pages: 238-246

    • DOI

      10.1016/j.msec.2019.04.024

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Characterization of <i>Antheraea pernyi</i> fibroin films from the aqueous solution prepared by an improved process2019

    • Author(s)
      Selene Rozet, Hisatoshi Kobayashi, Zenta Kajiura, Yasushi Tamada
    • Journal Title

      The Journal of Silk Science and Technology of Japan

      Volume: 27 Issue: 0 Pages: 33-42

    • DOI

      10.11417/silk.27.33

    • NAID

      130007610648

    • ISSN
      1880-8204, 1881-1698
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 超高圧処理により脱細胞化した透明豚由来角膜実質再生足場の開発2021

    • Author(s)
      小林尚俊, 橋本良秀, 根岸淳, 舩本誠一, 木村剛,岸田晶夫.
    • Organizer
      平成2年AMED成果事業化のためのシーズ相談会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 角膜実質組織の再構築を目指した透明脱細胞化角膜実質の開発2021

    • Author(s)
      橋本良秀, 根岸淳, 舩本誠一, 木村剛, 小林尚俊, 岸田晶夫.
    • Organizer
      第20回日本再生医療学会総会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 長期保存可能なヒト角膜移植代替脱細胞化豚角膜移植片2020

    • Author(s)
      小林尚俊, 橋本良秀, 根岸淳, 舩本誠一, 木村剛,岸田晶夫.
    • Organizer
      NIMS WEEK 2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] 長期保存可能なヒト角膜移植代替脱細胞化豚角膜移植片2020

    • Author(s)
      小林尚俊, 橋本良秀, 根岸淳, 舩本誠一, 木村剛,岸田晶夫.
    • Organizer
      産学連携オンラインEXPO
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Stability and shelf life improvement of the transpatent -treated decellularized cornea with ultrahigh hydrostatic pressure treatment2020

    • Author(s)
      Hisatoshi Kobayashi, Yoshihide Hashimoto, AkioKishida, Jun Negishi, Seiichi Funamoto, Toshiya Fujisato
    • Organizer
      Virtual World Biomaterials Congress 2020, 11-15 Dec 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 調製法が異なるシルクフィブロイン基材上でのP19CL6細胞の自発拍動挙動2019

    • Author(s)
      川久保 彩夏, 小橋尚教, 玉田 靖, 山岡哲二, 小林 尚俊
    • Organizer
      2019繊維学会年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] シルク上でのiPS細胞の長期培養挙動2019

    • Author(s)
      白川 美徳, 玉田 靖, 山岡哲二, 小林 尚俊
    • Organizer
      2019繊維学会年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Silk fibroin nanofiber based architecture for corneal stromal regeneration2019

    • Author(s)
      KOBAYASHI, Hisatoshi
    • Organizer
      biomaterial engineering unit seminor in Chulalongkorn university, Thailand
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 透明化脱細胞角膜実質足場の保存性と安定性2019

    • Author(s)
      小林尚俊、橋本良秀、岸田晶夫、根岸淳、舩本誠一、藤里俊哉
    • Organizer
      第41回バイオマテリアル学会年会
    • Related Report
      2019 Annual Research Report
  • [Remarks] Samurai

    • URL

      https://samurai.nims.go.jp/profiles/kobayashi_hisatoshi

    • Related Report
      2019 Annual Research Report
  • [Patent(Industrial Property Rights)] 乾燥脱細胞化組織の製造方法、脱細胞化組織の保存前処理法、及び、乾燥脱細胞化組織2020

    • Inventor(s)
      岸田晶夫, 橋本良秀, 舩本誠一, 根岸淳, 小林尚俊
    • Industrial Property Rights Holder
      岸田晶夫, 橋本良秀, 舩本誠一, 根岸淳, 小林尚俊
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-170530
    • Filing Date
      2020
    • Related Report
      2020 Annual Research Report

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Published: 2019-04-18   Modified: 2025-03-27  

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