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2021 Fiscal Year Final Research Report

Development of highly efficient hepatic regeneration and inhibition of carcinogenesis for NASH using CD34-positive cell therapy

Research Project

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Project/Area Number 19K08407
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionKurume University

Principal Investigator

NAKAMURA TORU  久留米大学, 医学部, 講師 (30341332)

Co-Investigator(Kenkyū-buntansha) 増田 篤高  久留米大学, 医学部, 助教 (40647872)
安倍 満彦  久留米大学, 医学部, 助教 (70624518)
鈴木 浩之  久留米大学, 医学部, 助教 (70817832)
Project Period (FY) 2019-04-01 – 2022-03-31
KeywordsNASH / 肝硬変 / CD34陽性細胞 / 細胞療法 / 肝線維症 / 肝再生
Outline of Final Research Achievements

We investigated whether transplantation of CD34-positive cells reduce liver fibrosis and promote hepatic regeneration in NASH model mice. We demonstrated that engrafted CD34-positive cells suppress liver injury and liver fibrogenesis, promote hepatocyte proliferation and show anti-apoptotic effects in a dose-dependent manner. The mechanism was thought to be that CD34-positive cells inhibit the migration of T lymphocytes, macrophages, and NK cells to the liver by suppressing CXCL10 via IFN-α, which is the inflammatory microenvironment.

Free Research Field

肝硬変

Academic Significance and Societal Importance of the Research Achievements

肝硬変の動向として、食生活の欧米化に伴い非アルコール性脂肪性肝炎(NASH)に伴う肝硬変が増加すると考えられている。本研究はNASHを誘導するモデルマウスを作製し、NASHモデルマウスに対しCD34陽性細胞を細胞移植し、現在進行中の臨床研究「C型肝硬変に対する肝再生医療」をNASH肝硬変患者にも適応拡大可能の可否について検討した。NASH肝硬変患者に対し、本邦においては間葉系幹細胞を用いた基礎及び臨床研究の報告が散見されるものの、CD34陽性細胞を用いた肝再生医療研究の報告は国内外になく、学術的・社会的意義は極めて高いものと考えられる。

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Published: 2023-01-30  

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