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2015 Fiscal Year Annual Research Report

ピロリ菌感染症による胃腫瘍発症機構の解明

Research Project

Project/Area Number 25293104
Research InstitutionOita University

Principal Investigator

山岡 吉生  大分大学, 医学部, 教授 (00544248)

Project Period (FY) 2013-04-01 – 2016-03-31
Keywordsヘリコバクター・ピロリ / 胃がん / 病原因子 / 動物モデル
Outline of Annual Research Achievements

Helicobacter pylori(ピロリ菌)のOuter inflammatory protein (OipA)とCytotoxin associated gene product (CagA)は重要な病原因子であり、OipAは私のグループが発見・命名した。胃上皮細胞を用いたin vitroの系ではOipAはSTAT1/3経路およびERK経路の活性化に関与し、CagAはSHP-2への結合を介してERK経路に関与する。しかしOipAとCagAのin vivoでの役割は確定されていない。
本研究では、IL-6ファミリーのレセプターであるgp130上のSHP-2結合部位が欠損したノックインマウス(SHP-2→ERK経路は欠落し、STAT1/3経路は過剰活性化)にoipAおよびcagA遺伝子を変異させたピロリ菌を感染させて、腫瘍形成を観察し、さらに分子生物学的手法を用いて、OipAとCagAのin vivoでの役割を探求することを目標とする。
感染実験では、各種ノックアウト菌が感染成立しないという結果に終わってしまったため、OipAの生成に方向転換をすることとした。一般的に膜タンパク質の精製は困難を極めるが、様々な条件を駆使して、大腸菌を用いて全長のrecombinant OipA (rOipA)の精製に成功しOipAを含む病原因子群が、ピロリ菌の細胞膜上において複合体を形成していることを見出した。これらのデータをもとに新たな研究費獲得にも挑戦し、今年度から、ピロリ菌病原因子複合体による疾患発症機構というタイトルで、新たに基盤(B)を獲得することができた。

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Causes of Carryover

27年度が最終年度であるため、記入しない。

Expenditure Plan for Carryover Budget

27年度が最終年度であるため、記入しない。

  • Research Products

    (52 results)

All 2016 2015 Other

All Int'l Joint Research (6 results) Journal Article (31 results) (of which Int'l Joint Research: 17 results,  Peer Reviewed: 18 results,  Open Access: 10 results,  Acknowledgement Compliant: 12 results) Presentation (14 results) (of which Int'l Joint Research: 12 results,  Invited: 3 results) Remarks (1 results)

  • [Int'l Joint Research] ベイラー医科大学(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      ベイラー医科大学
    • # of Other Institutions
      1
  • [Int'l Joint Research] インドネシア大学/アイルランガ大学(インドネシア)

    • Country Name
      INDONESIA
    • Counterpart Institution
      インドネシア大学/アイルランガ大学
    • # of Other Institutions
      5
  • [Int'l Joint Research] モンゴル健康科学大学/ウランバートル第3病院(モンゴル)

    • Country Name
      MONGOLIA
    • Counterpart Institution
      モンゴル健康科学大学/ウランバートル第3病院
    • # of Other Institutions
      3
  • [Int'l Joint Research] チュラロンコン大学/タマサート大学(タイ)

    • Country Name
      THAILAND
    • Counterpart Institution
      チュラロンコン大学/タマサート大学
    • # of Other Institutions
      3
  • [Int'l Joint Research] チョーライ病院/108病院(ベトナム)

    • Country Name
      VIET NAM
    • Counterpart Institution
      チョーライ病院/108病院
    • # of Other Institutions
      3
  • [Int'l Joint Research]

    • # of Other Countries
      11
  • [Journal Article] Extremely High Prevalence of Metronidazole-Resistant Helicobacter pylori Strains in Mountain People (Karen and Hmong) in Thailand.2016

    • Author(s)
      Vilaichone RK, Ratanachu-Ek T, Gamnarai P, Chaithongrat S, Uchida T, Yamaoka Y, Mahachai V.
    • Journal Title

      Am J Trop Med Hyg

      Volume: 94 Pages: 717-720

    • DOI

      10.4269/ajtmh.15-0449

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Helicobacter pylori antibiotic susceptibility patterns in Bangladesh: Emerging levofloxacin resistance2016

    • Author(s)
      Aftab H, Miftahussurur M, Subsomwong P, Ahmed F, Khan AA, Yamaoka Y
    • Journal Title

      J Infect Dev Ctries

      Volume: 10 Pages: 245-253

    • DOI

      10.3855/jidc.7713

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Rare Helicobacter pylori Virulence Genotypes in Bhutan2016

    • Author(s)
      Matsunari O, Miftahussurur M, Shiota S, Suzuki R, Vilaichone RK, Uchida T, Ratanachu-Ek T, Tshering L, Mahachai V, Yamaoka Y
    • Journal Title

      Sci Rep

      Volume: 6 Pages: 22584

    • DOI

      10.1038/srep22584

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Characterisation of worldwide Helicobacter pylori strains reveals genetic conservation and essentiality of serine protease HtrA2016

    • Author(s)
      Tegtmeyer N, Moodley Y, Yamaoka Y, Pernitzsch SR, Schmidt V, Traverso FR, Schmidt TP, Rad R, Yeoh KG, Bow H, Torres J, Gerhard M, Schneider G, Wessler S, Backert S.
    • Journal Title

      Mol Microbiol

      Volume: 99 Pages: 925-944

    • DOI

      10.1111/mmi.13276

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Antibiotic Resistant Pattern of Helicobacter Pylori Infection Based on Molecular Tests in Laos2016

    • Author(s)
      Vannarath S, Vilaichone RK, Rasachak B, Mairiang P, Yamaoka Y, Mahachai V
    • Journal Title

      Asian Pac J Cancer Prev

      Volume: 17 Pages: 285-287

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Diagnostic Methods of Helicobacter pylori Infection for Epidemiological Studies: Critical Importance of Indirect Test Validation2016

    • Author(s)
      Miftahussurur M, Yamaoka Y
    • Journal Title

      Biomed Res Int

      Volume: 2016 Pages: 1-14

    • DOI

      10.1155/2016/4819423

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] RAD51 G135C genetic polymorphism and their potential role in gastric cancer induced by Helicobacter pylori infection in Bhutan2016

    • Author(s)
      Trang TT, Nagashima H, Uchida T, Mahachai V, Vilaichone RK, Tshering L, Binh TT, Yamaoka Y
    • Journal Title

      Epidemiol Infect

      Volume: 144 Pages: 234-240

    • DOI

      10.1017/S0950268815001430

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Food Allergy and Helicobacter pylori Infection: A Systematic Review2016

    • Author(s)
      Ma ZF, Majid NA, Yamaoka Y, Lee YY
    • Journal Title

      Front Microbiol

      Volume: 7 Pages: 368

    • DOI

      10.3389/fmicb.2016.00368

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Prostate stem cell antigen gene TT genotype and development of intestinal metaplasia in Helicobacter pylori infection2016

    • Author(s)
      Uotani T, Sugimoto M, Ichikawa H, Tanaka S, Nagashima H, Uchida T, Graham DY, Yamaoka Y
    • Journal Title

      J Dig Dis

      Volume: 17 Pages: 20-27

    • DOI

      10.1111/1751-2980.12309

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] 第6回 インドネシアでの疫学調査 - その3 -2016

    • Author(s)
      山岡吉生
    • Journal Title

      Helicobacter Research

      Volume: 20 Pages: 5-17

  • [Journal Article] XXVIIIth International Workshop on Helicobacter and Microbiota in Inflammation and Cancer (欧州ヘリコバクター学会)2016

    • Author(s)
      山岡吉生
    • Journal Title

      Helicobacter Research

      Volume: 20 Pages: 68-73

  • [Journal Article] Toll-like Receptor 10 in Helicobacter pylori Infection2015

    • Author(s)
      Nagashima H, Iwatani S, Cruz M, Jiménez Abreu JA, Uchida T, Mahachai V, Vilaichone RK, Graham DY, Yamaoka Y
    • Journal Title

      J Infect Dis

      Volume: 212 Pages: 1666-1676

    • DOI

      10.1093/infdis/jiv270

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Geographical distribution of the incidence of gastric cancer in Bhutan2015

    • Author(s)
      Dendup T, Richter JM, Yamaoka Y, Wangchuk K, Malaty HM
    • Journal Title

      World J Gastroenterol

      Volume: 21 Pages: 10883-10889

    • DOI

      10.3748/wjg.v21.i38.10883

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Pathogenesis of Helicobacter pylori Infection2015

    • Author(s)
      Sgouras DN, Trang TT, Yamaoka Y
    • Journal Title

      Helicobacter

      Volume: Suppl1 Pages: 8-16

    • DOI

      10.1111/hel.12251

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Gastric mucosa in Mongolian and Japanese patients with gastric cancer and Helicobacter pylori infection2015

    • Author(s)
      Matsuhisa T, Yamaoka Y, Uchida T, Duger D, Adiyasuren B, Khasag O, Tegshee T, Tsogt-Ochir B
    • Journal Title

      World J Gastroenterol

      Volume: 21 Pages: 8408-8417

    • DOI

      10.3748/wjg.v21.i27.8408

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Helicobacter pylori dupA and smoking are associated with increased levels of interleukin-8 in gastric mucosa in Iraq-reply2015

    • Author(s)
      Nagashima H, Yamaoka Y
    • Journal Title

      Hum Pathol

      Volume: 46 Pages: 931

    • DOI

      10.1016/j.humpath.2015.01.022

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Appropriate first-line regimens to combat Helicobacter pylori antibiotic resistance: an Asian perspective2015

    • Author(s)
      Miftahussurur M, Yamaoka Y
    • Journal Title

      Molecules

      Volume: 20 Pages: 6068-6092

    • DOI

      10.3390/molecules20046068

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Search for novel candidate mutations for metronidazole resistance in Helicobacter pylori using next-generation sequencing2015

    • Author(s)
      Binh TT, Suzuki R, Trang TT, Kwon DH, Yamaoka Y.
    • Journal Title

      Antimicrob Agents Chemother

      Volume: 59 Pages: 2343-2348

    • DOI

      10.1128/AAC.04852-14

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Identification of Helicobacter pylori infection in symptomatic patients in Surabaya, Indonesia, using five diagnostic tests2015

    • Author(s)
      Miftahussurur M, Shiota S, Suzuki R, Matsuda M, Uchida T, Kido Y, Kawamoto F, Maimunah U, Adi P, Rezkitha Y, Nasronudin, Nusi I, Yamaoka Y
    • Journal Title

      Epidemiol Infect

      Volume: 143 Pages: 986-996

    • DOI

      10.1017/S095026881400154X

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Influence of prostate stem cell antigen gene polymorphisms on susceptibility to Helicobacter pylori-associated diseases: a case-control study2015

    • Author(s)
      Ichikawa H, Sugimoto M, Uotani T, Sahara S, Yamade M, Iwaizumi M, Yamada T, Osawa S, Sugimoto K, Miyajima H, Yamaoka Y, Furuta T
    • Journal Title

      Helicobacter

      Volume: 20 Pages: 106-113

    • DOI

      10.1111/hel.12183

    • Peer Reviewed
  • [Journal Article] 第1回 ブータンでの疫学調査2015

    • Author(s)
      山岡吉生
    • Journal Title

      Helicobacter Research

      Volume: 19 Pages: 197-204

  • [Journal Article] 第2回 ブータンでの疫学調査 - その2 -2015

    • Author(s)
      山岡吉生
    • Journal Title

      Helicobacter Research

      Volume: 19 Pages: 229-236

  • [Journal Article] 第3回 ミャンマーでの疫学調査2015

    • Author(s)
      山岡吉生
    • Journal Title

      Helicobacter Research

      Volume: 19 Pages: 324-332

  • [Journal Article] 第4回 インドネシアでの疫学調査 - その1 -2015

    • Author(s)
      山岡吉生
    • Journal Title

      Helicobacter Research

      Volume: 19 Pages: 424-435

  • [Journal Article] 第5回 インドネシアでの疫学調査 - その2 -2015

    • Author(s)
      山岡吉生
    • Journal Title

      Helicobacter Research

      Volume: 19 Pages: 528-536

  • [Journal Article] CagAの差異で, 胃癌の発症率の地域差を説明することは本当にできるのか?2015

    • Author(s)
      山岡吉生, 松久威史, Subsomwong Phawinee, 鈴木留美子, 内田智久, Byambajav Tsogt-Ochir, Oyuntsetseg Khasag, Davaadorj Duger, Battulga Adiyasuren, Tserentogtoh Tegshee
    • Journal Title

      日本ヘリコバクター学会誌

      Volume: 16 Pages: 16-17

  • [Journal Article] Current Topics (現在のトピックス)2015

    • Author(s)
      山岡吉生
    • Journal Title

      日本ヘリコバクター学会誌

      Volume: 16 Pages: 63

  • [Journal Article] H.pyloriの細菌学的性状, ゲノム構造2015

    • Author(s)
      山岡吉生
    • Journal Title

      臨床と微生物

      Volume: 42 Pages: 105-111

  • [Journal Article] Asia Pacific Digestive Week (APDW) 20142015

    • Author(s)
      山岡吉生
    • Journal Title

      Helicobacter Research

      Volume: 19 Pages: 185-188

  • [Journal Article] わが国の地域によるHelicobacter pylori菌株の差異2015

    • Author(s)
      塩田星児, 鈴木留美子, 山岡吉生
    • Journal Title

      Helicobacter Research

      Volume: 19 Pages: 450-457

  • [Journal Article] アジア地域 (人種) による菌株の差異2015

    • Author(s)
      鈴木留美子, 山岡吉生
    • Journal Title

      Helicobacter Research

      Volume: 19 Pages: 481-488

  • [Presentation] Commensal bacteriaとしてのH. pylori感染症におけるToll-like receptor 10の役割2015

    • Author(s)
      永島裕之, 山岡吉生
    • Organizer
      日本消化器病学会
    • Place of Presentation
      グランドプリンスホテル(東京都港区)
    • Year and Date
      2015-10-08 – 2015-10-10
  • [Presentation] The difference of cagA genotype of Helicobacter pylori alone cannot explain the geographic differences in gastric cancer incidence in Mongolia2015

    • Author(s)
      Yoshio Yamaoka
    • Organizer
      XXVIIIth International Workshop on Helicobacter and Microbiota in Inflammation and Cancer
    • Place of Presentation
      ニコシア(キプロス共和国)
    • Year and Date
      2015-09-24 – 2015-09-26
    • Int'l Joint Research
  • [Presentation] Molecular epidemiology of Helicobacter pylori in ASEAN countries: Focused in Indonesia2015

    • Author(s)
      Yoshio Yamaoka
    • Organizer
      KONKERPAS PPHI-PGI-PEGI2015
    • Place of Presentation
      マラン(インドネシア)
    • Year and Date
      2015-08-15 – 2015-08-16
    • Int'l Joint Research / Invited
  • [Presentation] ヘリコバクター・ピロリゲノムの地理的多様性と人類の移動2015

    • Author(s)
      鈴木留美子、山岡吉生
    • Organizer
      第21回日本ヘリコバクター学会
    • Place of Presentation
      神戸ポートピアホテル(兵庫県神戸市)
    • Year and Date
      2015-06-26 – 2015-06-27
  • [Presentation] Molecular epidemiology of Helicobacter pylori: association between H. pylori and disease outcomes2015

    • Author(s)
      Yoshio Yamaoka, Jimenez A Joze, Modesto Cruz
    • Organizer
      XII Congreso Centroamericano y del Caribe de parasitologia y Medicina Tropical
    • Place of Presentation
      プンタカナ(ドミニカ共和国)
    • Year and Date
      2015-06-13 – 2015-06-14
    • Int'l Joint Research / Invited
  • [Presentation] Self-organizing mini-guts from a single intestinal stem cell: the organoids2015

    • Author(s)
      Yoshio Yamaoka
    • Organizer
      XI Congreso INternacional de Investigacion cientifica
    • Place of Presentation
      サントドミンゴ(ドミニカ共和国)
    • Year and Date
      2015-06-10 – 2015-06-12
    • Int'l Joint Research / Invited
  • [Presentation] Molecular epidemiology of Helicobacter pylori infection in Nepal: the mountains people could be a high-risk population2015

    • Author(s)
      Muhammad Miftahussurur, Sharma RP, Shrestha PK, Suzuki R, Shiota S, Uchida T, Yamaoka Y
    • Organizer
      Digestive Disease Week 2015
    • Place of Presentation
      ワシントンDC(アメリカ合衆国)
    • Year and Date
      2015-05-16 – 2015-05-19
    • Int'l Joint Research
  • [Presentation] Prevalence and virulence factors characteristics of Helicobacter pylori infection in five largest islands in Indonesia2015

    • Author(s)
      Muhammad Miftahussurur, Shym AF, Makmun D, Nusi A, Uchida T, Suzuki R, Yamaoka Y
    • Organizer
      Digestive Disease Week 2015
    • Place of Presentation
      ワシントンDC(アメリカ合衆国)
    • Year and Date
      2015-05-16 – 2015-05-19
    • Int'l Joint Research
  • [Presentation] Hiroyuki Nagashima, Iwatani S, Tanaka S, Uotani T, Cruz M, Jimenez JA, Uchida T, Mahachai V, Vilaichone R, Graham DY,, Yamaoka Y.2015

    • Author(s)
      Toll-like receptor10 in Helicobacter pylori infection
    • Organizer
      Digestive Disease Week 2015
    • Place of Presentation
      ワシントンDC(アメリカ合衆国)
    • Year and Date
      2015-05-16 – 2015-05-19
    • Int'l Joint Research
  • [Presentation] Analysis of autophagy related genes in patients with Helicobacter pylori infection2015

    • Author(s)
      Shingo Tanaka, Nagashima H, Uotani T, Cruz M, Graham DY,, Yamaoka Y.
    • Organizer
      Digestive Disease Week 2015
    • Place of Presentation
      ワシントンDC(アメリカ合衆国)
    • Year and Date
      2015-05-16 – 2015-05-19
    • Int'l Joint Research
  • [Presentation] Prostate stem cell antigen gene polymorphisms as a predictive factor for Helicobacter pylori infection associated intestinal metaplasia2015

    • Author(s)
      Takahiko Uotani, Sugumoto M, Ichikawa H, Tanaka S, Nagashima H, Uchida T, Furuta T, Graham DY,, Yamaoka Y
    • Organizer
      Digestive Disease Week 2015
    • Place of Presentation
      ワシントンDC(アメリカ合衆国)
    • Year and Date
      2015-05-16 – 2015-05-19
    • Int'l Joint Research
  • [Presentation] RAD51 G135C genetic polymorphism and potential role in gastric cancer induced Helicobacter pylori2015

    • Author(s)
      Tran Huyen Trang, Yoshio Yamaoka
    • Organizer
      The 3rd JSGE International Topic Conference
    • Place of Presentation
      仙台国際センター(宮城県仙台市)
    • Year and Date
      2015-04-25 – 2015-04-25
    • Int'l Joint Research
  • [Presentation] Prevalence of H.pylori infection in different ethnic groups in Maesot, Thailand2015

    • Author(s)
      Phawinee Subsomwong, Muhammad Miftahussurur, Tomohisa Uchida, Varocha Mahachai, Ratha-korn Vilaichone, Yoshio Yamaoka
    • Organizer
      The 3rd JSGE International Topic Conference
    • Place of Presentation
      仙台国際センター(宮城県仙台市)
    • Year and Date
      2015-04-25 – 2015-04-25
    • Int'l Joint Research
  • [Presentation] Helicobacter pylori infection and gastric mucosal atrophy in two ethnics group in Nepal2015

    • Author(s)
      Muhammad Miftahussurur, Rabi Prakash Sharma, Seiji Shiota, Rumiko Suzuki, Tomohisa Uchida, Miyuki Matsuda, Yoshio Yamaoka
    • Organizer
      The 3rd JSGE International Topic Conference
    • Place of Presentation
      仙台国際センター(宮城県仙台市)
    • Year and Date
      2015-04-25 – 2015-04-25
    • Int'l Joint Research
  • [Remarks] http://www.med.oita-u.ac.jp/phealth2/index.html

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Published: 2017-01-06   Modified: 2022-01-27  

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