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2022 Fiscal Year Final Research Report

Development of a novel therapy for NASH focusing on the intestinal-liver organ correlation produced by factors form dental pulp stem cell

Research Project

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Project/Area Number 19K17457
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

ITO Takanori  名古屋大学, 医学部附属病院, 病院助教 (00827389)

Project Period (FY) 2019-04-01 – 2023-03-31
KeywordsNASH / SHED-CM / ヒト乳歯歯髄幹細胞 / 腸肝相関 / 脂肪肝 / マクロファージ
Outline of Final Research Achievements

Serum-free conditioned medium from stem cells derived from human exfoliated deciduous teeth (SHED-CM) contains numerous humoral factors, including proteins involved in suppressing inflammation and promoting regeneration. This study showed that SHED-CM improved liver fibrosis in a mouse model of NASH by protecting the tight junction of the intestinal epithelium and maintaining the intestinal barrier function. Furthermore, in vitro, SHED-CM treatment was shown to maintain the permeability function of the intestinal epithelium in the Caco-2 single-cell layer model. In addition to its hepato-protective effects and inhibition of inflammatory macrophage activation, SHED-CM can suppress fibrosis in the NASH model via the gut-liver axis.

Free Research Field

消化器内科

Academic Significance and Societal Importance of the Research Achievements

アジア、欧米諸国において肥満や2型糖尿病罹患頻度の増加とともにNAFLD/NASHが急速に増加している。しかし、NAFLD/NASHが強い炎症・線維化を来した場合、根本的な治療は現在存在しない。SHED-CM による様々な動物モデルに対する抗炎症・組織再生効果は、これまでマクロファージの極性転換が主な作用点だと考えられてきたが、本研究においてNASHマウスモデルにおいてはそれに加えて腸肝相関を介して炎症・線維化を抑制することを明らかとなった。NAFLD/NASHの病態は複雑であるが、SHED-CMはNASH に対して多面的な治療効果を発揮するため、有望な治療薬となり得る可能性がある。

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Published: 2024-01-30  

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