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The role of KIAA1462 in chronic obstructive pulmonary disease (COPD)

Research Project

Project/Area Number 19K08651
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 InstitutionKobe University

Principal Investigator

Yamamoto Masatsugu  神戸大学, 医学部附属病院, 助教 (40542139)

Co-Investigator(Kenkyū-buntansha) 西村 善博  神戸大学, 医学部附属病院, 名誉教授 (20291453)
小林 和幸  神戸大学, 医学部附属病院, 特命教授 (50403275)
永野 達也  神戸大学, 医学研究科, 講師 (80624684)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
KeywordsKIAA1462 / COPD / JCAD
Outline of Research at the Start

慢性閉塞性肺疾患(COPD)は40歳以上の日本人の約9%程度が罹患している頻度の高い生活習慣病の一つである。近年行われたヒトゲノムワイド関連解析(GWAS)の結果、KIAA1462という遺伝子がCOPDと関連していることが報告された。本研究は、KIAA1462の遺伝子ノックアウト(KO)マウスを用いて、COPDにおけるKIAA1462の役割を明らかにするとともに、従来にない肺血管と肺胞壁構造を標的とした新規COPDの分子標的治療薬を開発することを目的としている。本研究は、COPDの分子生物学的病態のさらなる理解と、これら多くのCOPD患者の生命予後の改善に寄与することが期待される。

Outline of Final Research Achievements

The aim of this study is to clarify the role of KIAA1462 in COPD. Therefore, we administered elastase to KIAA1462 gene-modified mice trans airway to create COPD model mice, evaluated the difference in emphysema by phenotype with pathological specimens, and stained with anti-CD31 antibody to evaluate the difference in angiogenesis. We performed immunohistochemistry to evaluate the expression of VEGF and VEGFR-2 in lung tissue. There was no obvious difference in the degree of emphysema due to the difference in genotype in COPD model mice(Mean linear intercept(MLI) of knock out (KO) mice (51.0±6.13μm) vs wild type (WT) mice (56.0±12.71μm)(p=0.57)), but the microvessel density of KO mice (5.41±2.75vessels/mm2) tended to be lower than WT mice(10.91±2.27vessels/mm2)(p=0.056). In addition, there was no difference in the immunohistochemical expression of VEGF and VEGFR-2. These results suggested that KIAA1462 is involved in angiogenesis in COPD by a route unrelated to VEGF.

Academic Significance and Societal Importance of the Research Achievements

これまでに、COPDにおけるJCAD/KIAA1462の関与、作用機序を示す論文はなく、本研究はJCAD/KIAA1462とCOPDの直接的な関与を作用機序も含めて解析する世界で初めての研究であるとともに、肺血管と肺胞壁構造を標的とした新規治療薬の開発につながる世界で初めての研究である。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (1 results)

All 2021

All Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] The role of KIAA1462 in chronic obstructive pulmonary disease (COPD)2021

    • Author(s)
      Masako Yumura, Tatsuya Nagano, Kazuyuki Kobayashi, Daisuke Hazama, Masatsugu Yamamoto, Yoshihiro Nishimura
    • Organizer
      APSR2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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