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
Project/Area Number |
19K17457
|
Research Category |
Grant-in-Aid for Early-Career Scientists
|
Allocation Type | Multi-year Fund |
Review Section |
Basic Section 53010:Gastroenterology-related
|
Research Institution | Nagoya 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
|
Keywords | NASH / 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。
|