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2021 Fiscal Year Final Research Report

A novel maker for pulmonary fibrosis using VEGFR-3-positive monocyte-lineage cells.

Research Project

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Project/Area Number 19K07894
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52010:General internal medicine-related
Research InstitutionIwate Medical University

Principal Investigator

YAMASHITA MASAHIRO  岩手医科大学, 医学部, 助教 (10606685)

Project Period (FY) 2019-04-01 – 2022-03-31
Keywordsマクロファージ / 肺傷害
Outline of Final Research Achievements

① In a bleomycin (BLM)-induced pulmonary fibrosis mouse model, using myeloid cell-specific VEGFR-3 depleted mice and the littermates, VEGFR-3 signaling functions to protect the fibrogenesis.
② In a lipopolysaccharide (LPS)-induced pulmonary fibrosis mouse model, VEGF-C/VEGFR-3 signaling ameliorates acute lung injury. In human acute respiratory distress syndrome, the ectodomain of VEGFR-3 on macrophage is interfered via post translational modification.

Free Research Field

呼吸器病学

Academic Significance and Societal Importance of the Research Achievements

特発性肺線維症あるいは急性呼吸窮迫症候群は予後が悪く前者は国の難病に指定されている。現時点のところ保険収載されている治療薬は、前者は抗線維治療薬であり後者は好中球エラスターゼ阻害剤であるが効果が充分ではなく予後の改善に寄与し得ていない。本研究の結果は肺内のマクロファージに発現するVEGFR-3シグナルを指標として肺線維症やヒト急性呼吸窮迫症候群など肺傷害の新たな治療戦略の考案に寄与すると考えられる。

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Published: 2023-01-30  

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