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Effect of peripheral blood-derived epidermal stem cells in diabetic wound repair and its underlying mechanism

Research Project

Project/Area Number 21K09801
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56070:Plastic and reconstructive surgery-related
Research InstitutionJuntendo University

Principal Investigator

Oomiri Ai  順天堂大学, 医学部, 助手 (60897156)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords表皮幹細胞 / 糖尿病性潰瘍 / 創傷治癒 / 皮膚再生 / 末梢血由来細胞 / 糖尿病
Outline of Research at the Start

本研究では健常者および糖尿病患者から採取した末梢血から表皮幹細胞を調製する方法を確立し、それぞれの移植成績を評価することで糖尿病における再生能力低下要因を特定する。本成果により、末梢血由来表皮幹細胞を用いた糖尿病性潰瘍治療の基盤が確立され、革新的皮膚再生治療法の樹立を目指す。

Outline of Final Research Achievements

Regenerative medicine is expected to play a key role in the treatment of diabetic leg ulcers. The applicant has devised a method to prepare epidermal stem cell marker-expressing (MNC-EK) cells by applying a proprietary ex vivo expansion and culture method to mononuclear cells (MNC) isolated from the peripheral blood of healthy humans. In this study, the aim is to elucidate the mechanism of epidermal stem cell supply in wounds for the treatment of diabetic skin ulcers. When MNC-EK cells were prepared from MNC collected from human peripheral blood and induced to differentiate into epidermal cells, the MNC-EK cells formed many epidermal cell colonies. When these MNC-EK cells were transplanted into immunodeficient diabetic ulcer model mice to examine the therapeutic effect, the ulcers shrank early after transplantation, and eventually healed to nearly 90%.

Academic Significance and Societal Importance of the Research Achievements

本研究成果より、皮膚再生には末梢血由来細胞が関与し糖尿病患者由来末梢血液細胞から再生能力の高い細胞を培養できる方法を確立したことは、皮膚潰瘍治療における革新的皮膚再生治療法へ期待が高まった。糖尿病患者由来末梢血液に含まれる血管再生や皮膚再生に関与する細胞は健常者よりもその機能や数が著しく低下していることが報告されている。この新しい培養法の確立により、少量の末梢血液から再生機能の高い細胞を生み出すため、患者に対しても低侵襲であることから下肢救済への躍進と患者QOL向上に繋がると考える。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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