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2021 Fiscal Year Final Research Report

Study on collagen dipeptides on growth of mesenchymal stem cells

Research Project

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Project/Area Number 19H02911
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 38050:Food sciences-related
Research InstitutionKyoto University

Principal Investigator

Sato Kenji  京都大学, 農学研究科, 教授 (00202094)

Co-Investigator(Kenkyū-buntansha) 重村 泰毅  東京家政大学短期大学部, 短期大学部, 准教授 (20373178)
自見 至郎  福岡大学, 公私立大学の部局等, 研究特任教授 (30226360)
淺井 智子  奈良女子大学, 生活環境科学系, 助教 (50832036)
Project Period (FY) 2019-04-01 – 2022-03-31
Keywordsコラーゲン / 線維芽細胞 / Pro-Hyp / 創傷治癒 / 瘢痕化
Outline of Final Research Achievements

Pro-Hyp increases in human blood after oral administration of collagen peptide. The present study revealed that primary cultured fibroblasts migrated from mouse skin expressed mesenchymal stem cell marker (p75NTR) at first day but its expression decreased after growth. Fluorophore (FITC)-labeled Pro-Hyp was specifically incorporated into p75NTR-positive fibroblasts but not into the p75NTR negative ones. Pro-Hyp enhanced growth of the p75NTR-positive fibroblasts but not the p75NTR-negative ones. These facts indicate that food-derived Pro-Hyp can enhance growth of the p75NTR positive fibroblasts accumulating to wound healing sites but exert little effect on resident fibroblasts in normal tissues. In animal models, Pro-Hyp can enhance wound healing and suppress scarring.

Free Research Field

食品科学

Academic Significance and Societal Importance of the Research Achievements

コラーゲンペプチドの摂取により血中で増加するPro-Hypは正常組織の成熟した線維芽細胞には影響することなく、創傷治癒部位に集積する分化直後の線維芽細胞の増殖を促進することが明らかにした。この結果は、コラーゲンペプチドの摂取は正常組織に過剰な線維化を起こすことなく、創傷治癒を促進することを説明できる。さらに動物モデルにおいてもコラーゲンペプチド由来のPro-Hypは真皮の創傷治癒を促進することを確認した。さらに筋膜切除後の治癒においての瘢痕化も抑制した。

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Published: 2023-01-30  

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