• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of airway epithelial keratinization and barrier function as a novel therapeutic target for asthma

Research Project

Project/Area Number 21K16308
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 54020:Connective tissue disease and allergy-related
Research InstitutionShowa University

Principal Investigator

Inoue Hideki  昭和大学, 医学部, 兼任講師 (80813162)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords気道上皮細胞 / 角層蛋白 / 気管支喘息 / 真菌 / アルテルナリア / 重症喘息 / 気道上皮 / 喘息 / アレルギー性喘息 / 喘息モデルマウス / 気道炎症 / 気道上皮バリアー
Outline of Research at the Start

重症喘息では気道上皮バリアー機能の低下が認められ慢性気道炎症の原因となる。本研究では、気道上皮細胞における気道上皮バリアー蛋白である角層蛋白発現と気道炎症との関与を明らかにし、気道上皮角層蛋白の補充が喘息の病態を改善するかを明らかにする。気道上皮細胞培養や喘息モデルマウスを用いた実験を行い、気道上皮角層蛋白と気道上皮バリアー機能や気道炎症の関連を明らかにする。

Outline of Final Research Achievements

Epithelial barrier dysfunction is implicated in asthma. We investigated the effects of fungal exposure on airway epithelial cells. Gene and protein expression were examined in the airway epithelial cell line 16HBE14o- after exposure to alternaria extract. RNA-Seq revealed upregulation of RNA regulation and transcription-related genes upon alternaria exposure. Downregulation of genes related to cell membrane function of intracellular organelles was observed. Alternaria exposure induced upregulation of the inflammatory cytokines IL-6 and IL-8, and downregulation of the filaggrin, a keratinocyte protein. Treatment with JTC-801 did not improve filaggrin expression. Control of fungal exposure-induced airway inflammation and maintenance of the keratinocyte protein barrier may be involved in the improvement of the pathophysiology of fungal sensitization asthma.

Academic Significance and Societal Importance of the Research Achievements

気管支喘息は成人の5-9%が罹患する疾患であり、コントロール不良は社会経済的な損失を招く。近年、真菌感作が喘息悪化に深く関与することが示唆されており、その病態解明が重要課題となっている。本研究では、真菌曝露が気道上皮細胞に及ぼす影響を網羅的に解析し、真菌感作喘息の病態解明に新たな視点を与えることを目的とした。気道上皮細胞株16HBE14o-にアルテルナリア抽出液を曝露し、遺伝子発現解析、炎症性サイトカイン測定、角層蛋白発現解析を行った。真菌曝露により、炎症性サイトカインの放出と角層蛋白の減少、細胞膜機能の低下が認められた。これらの異常は、気道炎症の悪化と気管支喘息の発症に寄与する可能性がある。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (2 results)

All 2022 2021

All Journal Article (2 results) (of which Peer Reviewed: 2 results)

  • [Journal Article] Fetal Lung Cells Transfer Improves Emphysematous Change in a Mouse Model of Neutrophil Elastase-Induced Lung Emphysema2022

    • Author(s)
      Ohta Shin、Tanaka Akihiko、Okazaki Tomoko、Mikuni Hatsuko、Uno Tomoki、Uchida Yoshitaka、Kimura Tomoyuki、Fukuda Yosuke、Jinno Megumi、Hirai Kuniaki、Miyata Yoshito、Inoue Hideki、Homma Tetsuya、Yamamoto Mayumi、Suzuki Shintaro、Sagara Hironori
    • Journal Title

      Current Issues in Molecular Biology

      Volume: 44 Issue: 9 Pages: 3923-3929

    • DOI

      10.3390/cimb44090269

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Comprehensive Gene Expression Signature Using RNA-Seq in Airways of Mouse Model of Severe Asthma with Fungal Sensitization2021

    • Author(s)
      Inoue Hideki、Akimoto Kaho、Ikeda Hitoshi、Sato Hiroki、Uno Tomoki、Uchida Yoshitaka、Kawahara Tomoko、Fukuda Yosuke、Hirai Kuniaki、Miyata Yoshito、Homma Tetsuya、Ohta Shin、Yamamoto Mayumi、Suzuki Shintaro、Tanaka Akihiko、Sagara Hironori
    • Journal Title

      International Archives of Allergy and Immunology

      Volume: 183 Issue: 2 Pages: 142-152

    • DOI

      10.1159/000519172

    • Related Report
      2021 Research-status Report
    • Peer Reviewed

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi