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2019 Fiscal Year Final Research Report

Development of a novel therapy for chronic GVHD targeting a macrophage-myofibroblast axis in fibrotic process

Research Project

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Project/Area Number 17K09945
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Hematology
Research InstitutionHokkaido University

Principal Investigator

Hashimoto Daigo  北海道大学, 医学研究院, 准教授 (20419576)

Project Period (FY) 2017-04-01 – 2020-03-31
Keywords慢性移植片対宿主病 / 線維化 / マクロファージ / ドライアイ / 筋線維芽細胞 / HSP47 / GVHD
Outline of Final Research Achievements

In the current study, we developed a novel anti-fibrotic therapy for chronic GVHD using murine model of allogeneic bone marrow transplantation. We found that macrophage depletion using anti-CSF1R antibody ameliorated skin fibrosis in chronic GVHD. We also found that systemic administration of vitamin A coupled liposomes containing siRNA against HSP47 (VA-lip HSP47) could ameliorate fibrosis in the skin, lacrimal gland, and salivary gland in chronic GVHD. Finally, we found that ocular instillation of VA-lip HSP47 ameliorate lacrimal grand fibrosis and dry eye syndrome in chronic GVHD.

Free Research Field

Hematopoietic stem cell transplantation

Academic Significance and Societal Importance of the Research Achievements

同種造血幹細胞移植の技術の進歩により, より多く移植が行われるようになり, より多くの移植患者の長期生存が可能となっている。そのため慢性GVHDによる生活の質の低下を防ぐことはより重要になっている。本研究では, 免疫抑制剤を使用せず線維化のメカニズムを標的にした新しい慢性GVHD治療法を開発した。これにより, 感染症や腫瘍の再発を増加させずに, 慢性GVHDの治療を行える可能性がある。

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Published: 2021-02-19  

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