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Analysis of gastrointestinal autoimmune diseases onset and the diversity of HLA antigen expression.

Research Project

Project/Area Number 20K17019
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionShinshu University

Principal Investigator

YAMAZAKI TOMOO  信州大学, 医学部附属病院, 助教(診療) (90795684)

Project Period (FY) 2020-04-01 – 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: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords自己免疫疾患 / 炎症性腸疾患 / HLA / eQTL / eQLT / IBD / UC / CD / 消化器自己免疫疾患 / 自己免疫性肝炎 / 原発性胆汁性胆管炎
Outline of Research at the Start

消化器自己免疫疾患は何らかの機序により免疫学的寛容が破綻することで発症するが、その病因は不明である。近年、末梢血リンパ球表面上に発現しているHuman leukocyte antigen(HLA)分子量の違いが自己免疫性疾患発症に影響することが報告されている。またHLA分子の発現量に影響を与える遺伝子座expression quantitative trait loci(eQTL)はHLA遺伝子の多型・変異と関連することが明らかとなってきた。本研究では消化器領域の自己免疫疾患患者のeQTLにおける遺伝子多型と実際のHLA発現量を検討し、疾患発症及び病態との関連を明らかにすることを目的とする。

Outline of Final Research Achievements

Inflammatory bowel disease (IBD) is known as a typical disease caused by some immunological mechanism in the gastrointestinal tract. In this study, we focused on human leukocyte antigen (HLA), which shows remarkable polymorphism, and expression quantitative trait loci (eQTL), which are chromosomal loci that regulate the expression level of HLA. We found that a specific single nucleotide polymorphism, rs9264942, on the eQTL is involved in disease pathogenesis and regulates HLA-C expression in peripheral blood lymphocytes. This polymorphism may be useful for predicting future disease onset.

Academic Significance and Societal Importance of the Research Achievements

炎症性腸疾患は1990年代以降、本邦で急激に患者数が増え続けている消化管領域の自己免疫疾患である。その代表疾患である潰瘍性大腸炎は20万人、クローン病は7万人の患者が存在すると言われている。その明らかな原因や根本的治療は確立されておらず、潰瘍性大腸炎、クローン病ともに難病指定をうけている。今回我々は免疫遺伝学的アプローチでヒト白血球型抗原とその発現量に着目し、疾患発症との関連を見出した。今回検討した遺伝子多型が疾患発症リスクや重症化予測因子となる可能性を秘めており、臨床的にも重要な知見であると考えている。

Report

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

    (13 results)

All 2021 2020 2019

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (7 results)

  • [Journal Article] Investigation of the Effect of KIR-HLA Pairs on Hepatocellular Carcinoma in Hepatitis C Virus Cirrhotic Patients2021

    • Author(s)
      Umemura T, Joshita S, Saito H, Wakabayashi SI, Kobayashi H, Yamashita Y, Sugiura A, Yamazaki T, Ota M
    • Journal Title

      Cancers (Basel)

      Volume: 29;13(13) Issue: 13 Pages: 3267-3267

    • DOI

      10.3390/cancers13133267

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Association analysis of KIR/HLA genotype with liver cirrhosis, hepatocellular carcinoma, and NUC freedom in chronic hepatitis B patients2021

    • Author(s)
      Joshita S, Ota M, Kobayashi H, Wakabayashi SI, Yamashita Y, Sugiura A, Yamazaki T, Tanaka E, Umemura T.
    • Journal Title

      Scientific Reports

      Volume: 11(1) Issue: 1

    • DOI

      10.1038/s41598-021-01014-x

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Serum thrombospondin 2 is a novel predictor for the severity in the patients with NAFLD2021

    • Author(s)
      Kimura T, Tanaka N, Fujimori N, Yamazaki T, Katsuyama T, Iwashita Y, Pham J, Joshita S, Pydi SP, Umemura T.
    • Journal Title

      Liver International

      Volume: 41(3) Issue: 3 Pages: 505-514

    • DOI

      10.1111/liv.14776

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Quantitative and qualitative lipid improvement with chronic hepatitis C virus eradication using direct-acting antivirals2021

    • Author(s)
      Joshita S, Yamashita Y, Okamoto T, Usami Y, Sugiura A, Yamazaki T, Kakino A, Ota M, Sawamura T, Umemura T.
    • Journal Title

      Hepatology Research

      Volume: 51(7) Issue: 7 Pages: 758-766

    • DOI

      10.1111/hepr.13666

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Polymorphism at rs9264942 is associated with HLA-C expression and inflammatory bowel disease in the Japanese2020

    • Author(s)
      Suzuki Hiroshi、Joshita Satoru、Hirayama Atsuhiro、Shinji Akihiro、Mukawa Kenji、Sako Minako、Yoshimura Naoki、Suga Tomoaki、Umemura Takeji、Ashihara Norihiro、Yamazaki Tomoo、Ota Masao
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 12424-12424

    • DOI

      10.1038/s41598-020-69370-8

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Clinical utility of FibroScan as a non‐invasive diagnostic test for primary biliary cholangitis2019

    • Author(s)
      Joshita Satoru、Yamashita Yuki、Sugiura Ayumi、Uehara Takeshi、Usami Yoko、Yamazaki Tomoo、Fujimori Naoyuki、Matsumoto Akihiro、Tanaka Eiji、Umemura Takeji
    • Journal Title

      Journal of Gastroenterology and Hepatology

      Volume: - Issue: 7 Pages: 1208-1214

    • DOI

      10.1111/jgh.14929

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 薬物性肝障害生検例におけるM2BPGiの意義と可溶性IL2受容体との関連2021

    • Author(s)
      山崎智生, 城下智, 梅村武司
    • Organizer
      第57回日本肝臓学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 急性肝不全におけるM2BPGiの臨床的意義と経時的変化の検討2021

    • Author(s)
      山崎智生, 城下智, 梅村武司
    • Organizer
      第107回日本消化器病学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 薬物性肝障害生検例におけるM2BPGiを中心とした肝線維化マーカーの意義2021

    • Author(s)
      山崎智生, 城下智, 梅村武司
    • Organizer
      Japan Digestive Disease Week 2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] 原発性胆汁性胆管炎の非侵襲的病期診断法の臨床的有用性2020

    • Author(s)
      城下智、山下裕騎、杉浦亜弓、山崎智生、梅村武司
    • Organizer
      第117 回日本内科学会総会・講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] M2BPGiおよびAutotaxinは薬物性肝障害における組織学的炎症を反映し得るか2020

    • Author(s)
      山崎智生、城下智、梅村武司
    • Organizer
      第56回日本肝臓学会総会
    • Related Report
      2020 Research-status Report
  • [Presentation] Liver injury mechanism and histological findings at onset of drug-induced liver injury using cytokeratin-18-related cell death markers, JDDW 2020, Kobe, Japan.2020

    • Author(s)
      Tomoo Yamazaki, Satoru Joshita, Takeji Umemura
    • Organizer
      Japan Digestive Disease Week 2020
    • Related Report
      2020 Research-status Report
  • [Presentation] 予後・病型・成因ごとにみた急性肝不全におけるM2BPGiの臨床的意義の検討2020

    • Author(s)
      山崎智生、城下智、梅村武司
    • Organizer
      第43回日本肝臓学会東部会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2023-01-30  

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