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Molecular mechanisms on how alveolar epithelial cells respond to exogenous stress in COPD

Research Project

Project/Area Number 20K08558
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53030:Respiratory medicine-related
Research InstitutionTohoku University

Principal Investigator

Fujino Naoya  東北大学, 大学病院, 助教 (10633670)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords慢性閉塞性肺疾患 / 肺胞上皮細胞 / 組織幹細胞 / COPD / 肺胞II型上皮細胞 / 幹細胞 / 肺胞上皮II型細胞 / ストレス応答機構 / 細胞間相互作用 / クロスプレゼンテーション
Outline of Research at the Start

独自に開発したヒト肺構築細胞分離法を用いて、COPD肺より肺胞上皮幹細胞である肺胞II型上皮細胞を分離し、ストレス環境下における増殖能・分化能を解析する。
II型細胞のniche細胞として知られる肺線維芽細胞、血管内皮細胞の疾患肺における幹細胞支持機能を解析する。
II型細胞のMHC class I依存性cross-presentationによる細胞傷害性T細胞活性化を解析する。

Outline of Final Research Achievements

Chronic Obstructive Pulmonary Disease (COPD) is an intractable respiratory disease that causes progressive airflow limitation due to the destruction of airways and alveolar structures caused by long-term inhalation of toxic substances, mainly tobacco smoke. In this study, we isolated alveolar epithelial type II cells (type II cells), which are known as stem cells of alveolar epithelial cells, and aimed to establish a three-dimensional culture system. A co-culture system with fibroblasts was performed, and the sphere-forming ability of type II cells was improved by the use of a Rho kinase inhibitor. Immunohistochemical studies were performed using healthy and COPD lung tissue, and the percentage of stem cell type II cells was decreased in COPD lung tissue.

Academic Significance and Societal Importance of the Research Achievements

本研究の独自性は、新規開発したヒト肺組織細胞分離法を用い、これまで明らかにされていなかったヒト疾患肺組織におけるII型細胞の幹細胞性維持機構を分子レベルで解明できることが期待される点にある。さらに、II型細胞と線維芽細胞との共培養や、遺伝子発現解析を通して、COPD病態における多様な肺細胞ネットワークの一部が解明され、これまでの研究とは次元の違う精度の機能解析が期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (7 results)

All 2022 2021 2020

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (4 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Decreased expression of airway epithelial Axl is associated with eosinophilic inflammation in severe asthma2022

    • Author(s)
      Itakura Koji、Fujino Naoya、Kamide Yosuke、Saito Ikuo、Yamada Mitsuhiro、Okutomo Koji、Tsukita Yoko、Saito Takuya、Ichikawa Tomohiro、Numakura Tadahisa、Kyogoku Yorihiko、Aizawa Hiroyuki、Ono Yoshinao、Matsumoto Shuichiro、Hussell Tracy、Taniguchi Masami、Ichinose Masakazu、Sugiura Hisatoshi
    • Journal Title

      Allergology International

      Volume: 71 Issue: 3 Pages: 383-394

    • DOI

      10.1016/j.alit.2022.02.010

    • ISSN
      1323-8930, 1440-1592
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Increased  LHX9 expression in alveolar epitherial type 2 cells of patients with chronic obstructive pulmonary disease.2022

    • Author(s)
      Okutomo K. Fujino N, Yamada M, Saito T,Ono Y,Okada Y, Ichinose M, Sugiura H
    • Journal Title

      Respir Investig.

      Volume: 60 Issue: 1 Pages: 119-128

    • DOI

      10.1016/j.resinv.2021.08.007

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Triple versus LAMA/LABA combination therapy for Japanese patients with COPD: A systematic review and meta-analysis2022

    • Author(s)
      Koarai Akira、Yamada Mitsuhiro、Ichikawa Tomohiro、Fujino Naoya、Kawayama Tomotaka、Sugiura Hisatoshi
    • Journal Title

      Respiratory Investigation

      Volume: 60 Issue: 1 Pages: 90-98

    • DOI

      10.1016/j.resinv.2021.04.007

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] dsDNA刺激誘導性インターフェロン産生に与えるタバコ煙の影響の検討2022

    • Author(s)
      相澤 洋之, 小荒井 晃, 沼倉 忠久, 市川 朋宏, 藤野 直也, 山田 充啓, 杉浦 久敏
    • Organizer
      第62回 日本呼吸器学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Siglec-1-negative Alveolar Macrophages May Represent Pro-inflammatory Phenotypes And Are Associated With COPD Exacerbation2021

    • Author(s)
      Takuya Saito, Naoya Fujino, Yorihiko Kyogoku, Koji Okutomo, Mitsuhiro Yamada, Hisatoshi Sugiura
    • Organizer
      ATS 2021 International Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 慢性閉塞性肺疾患の増悪における肺胞マクロファージのSiglec-1発現低下2021

    • Author(s)
      齋藤拓矢,藤野直也,京極自彦,山田充啓,杉浦久敏
    • Organizer
      第61回 日本呼吸器学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] Sialic Acid-binding Immunoglobulin-type Lectin1 (Siglec1) Is Important For Bacterial Engulfment By Alveolar Macrophages And Is Down- regulated In COPD Patients2020

    • Author(s)
      N. Fujino, A. Tanno, M. Yamada, H. Sugiura, T. Hirano, R. Tanaka, H. Sano, M. Ichinose
    • Organizer
      American Thoracic Society 2020 International Conference
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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