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Exploring critical factors responsible for regulating the survival of Chlamydia trachomatis into cervical mucosa

Research Project

Project/Area Number 16H05225
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Laboratory medicine
Research InstitutionHokkaido University

Principal Investigator

Yamaguchi Hiroyuki  北海道大学, 保健科学研究院, 教授 (40221650)

Co-Investigator(Kenkyū-buntansha) 中村 眞二  順天堂大学, 医学(系)研究科(研究院), 助教 (40207882)
松尾 淳司  北海道医療大学, その他, 教授 (50359486)
大久保 寅彦  北海道大学, 保健科学研究院, 講師 (90762196)
岩破 一博  京都府立医科大学, 医学部, 教授 (30223390)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2018: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2017: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Keywordsクラミジア / 性感染症 / 腟粘膜面 / 菌叢解析 / インドール / アポトーシス / 低酸素環境 / Chlamydia trachomatis / 腟粘膜面菌叢 / IFNγ / ルシフェラーゼ / 低酸素 / 不妊 / メタボローム / 膣スワブ / 腸内細菌科細菌 / 菌叢 / 生殖器 / メタボローム解析 / 臨床細菌 / 膣検体
Outline of Final Research Achievements

Chlamydia trachomatis is the leading cause of bacterial sexually transmitted infections, with an estimated 131 million new cases annually worldwide. Although IFN-γ is a critical defense factor against C. trachomatis genital infection that acts by depleting host cellular tryptophan pool, the presence of indole, which is a precursor for tryptophan, can rescue genital chlamydiae despite depletion of tryptophan in IFN-γ-exposed cells in vitro, presumably, the higher vaginal indole amount prolongs the survival of C. trachomatis in the vaginal tract. Here, using the 554 cervical swabs with the prevalence of C. trachomatis infection, we indicated that the flow of bacteria through the anogenital route along with gut indole, had a strong impact on the prevalence of C. trachomatis in the cervicogenital tract of women. We also established a standardized chlamydial culture method in hypoxia and the detection system of apoptosis with caspase-3 expressing HEp-2 cells into chlamydia-infecte cells.

Academic Significance and Societal Importance of the Research Achievements

本邦における健康女性のクラミジア感染者の多くが無症候性であり(感染頻度は10%程度)、治療をせずに放置するとPID(骨盤内炎症性疾患)を介して不妊となる。一方、腟粘膜面においてクラミジア感染を規定する要因は不明であり、クラミジア感染症は十分にコントロールされていない。それ故に本研究で得られた研究成果から、クラミジアの感染リスクを予測することができるようになり、クラミジア感染症の予防が格段に促進されるものと確信している。さらにクラミジア感染が慢性化した際に起こるPIDや不妊の予防、少子化問題の解決にも寄与する社会的に見ても極めて意義深い研究成果である。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (38 results)

All 2019 2018 2017 2016 Other

All Journal Article (17 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 17 results,  Open Access: 5 results) Presentation (20 results) (of which Int'l Joint Research: 9 results,  Invited: 1 results) Remarks (1 results)

  • [Journal Article] Chlamydia pneumoniae enhances Interleukin 8 (IL-8) production with reduced azithromycin sensitivity under hypoxia2019

    • Author(s)
      Matsuo Junji、Sakai Kohei、Okubo Torahiko、Yamaguchi Hiroyuki
    • Journal Title

      APMIS

      Volume: 127 Issue: 3 Pages: 131-138

    • DOI

      10.1111/apm.12924

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A simple and short microbiology practical improves undergraduate nursing students’ awareness of bacterial traits and ability to avoid spreading infections2019

    • Author(s)
      Yano Rika、Okubo Torahiko、Shimoda Tomoko、Matsuo Junji、Yamaguchi Hiroyuki
    • Journal Title

      BMC Medical Education

      Volume: 19 Issue: 1 Pages: 1-7

    • DOI

      10.1186/s12909-019-1483-4

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Activation of caspase-3 during Chlamydia trachomatis-induced apoptosis at a late stage2019

    • Author(s)
      Matsuo Junji、Haga Sanae、Hashimoto Kent、Okubo Torahiko、Ozawa Takeaki、Ozaki Michitaka、Yamaguchi Hiroyuki
    • Journal Title

      Canadian Journal of Microbiology

      Volume: 65 Issue: 2 Pages: 135-143

    • DOI

      10.1139/cjm-2018-0408

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Tetrahymena promotes interactive transfer of carbapenemase gene encoded in plasmid between fecal Escherichia coli and environmental Aeromonas caviae2018

    • Author(s)
      Matsushita Mizue、Okubo Torahiko、Hasegawa Takaki、Matsuo Junji、Watanabe Takanori、Iwasaki Sumio、Fukumoto Tatsuya、Hayasaka Kasumi、Akizawa Kozi、Shimizu Chikara、Yamaguchi Hiroyuki
    • Journal Title

      Microbiology and Immunology

      Volume: 62 Issue: 11 Pages: 720-728

    • DOI

      10.1111/1348-0421.12656

    • NAID

      120006769953

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Analysis of adult damselfly fecal material aids in the estimation of antibiotic-resistant Enterobacterales contamination of the local environment2018

    • Author(s)
      Yamaguchi Yuyu、Okubo Torahiko、Matsushita Mizue、Wataji Masashi、Iwasaki Sumio、Hayasaka Kasumi、Akizawa Kouzi、Matsuo Junji、Shimizu Chikara、Yamaguchi Hiroyuki
    • Journal Title

      PeerJ

      Volume: 6 Pages: e5755-e5755

    • DOI

      10.7717/peerj.5755

    • NAID

      120006540071

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Subtle changes in host cell density cause a serious error in monitoring of the intracellular growth of Chlamydia trachomatis in a low-oxygen environment: Proposal for a standardized culture method2018

    • Author(s)
      Sakai Kouhei、Matsuo Junji、Watanabe Takanori、Okubo Torahiko、Nakamura Shinji、Yamaguchi Hiroyuki
    • Journal Title

      Journal of Microbiological Methods

      Volume: 153 Pages: 84-91

    • DOI

      10.1016/j.mimet.2018.09.007

    • NAID

      120006734162

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Impact of bacterial traces belonging to the Enterobacteriaceae on the prevalence of Chlamydia trachomatis in women visiting a community hospital in Japan2018

    • Author(s)
      Taki Keisuke、Watanabe Takanori、Matsuo Junji、Sakai Kouhei、Okubo Torahiko、Matsushita Mizue、Abe Kiyotaka、Minami Kunihiro、Yamaguchi Hiroyuki
    • Journal Title

      Journal of Infection and Chemotherapy

      Volume: 24 Issue: 10 Pages: 815-821

    • DOI

      10.1016/j.jiac.2018.06.011

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Lateral Gene Transfer Between Protozoa-Related Giant Viruses of Family Mimiviridae and Chlamydiae2018

    • Author(s)
      Watanabe Takanori、Yamazaki Sumire、Maita Chinatsu、Matushita Mizue、Matsuo Junji、Okubo Torahiko、Yamaguchi Hiroyuki
    • Journal Title

      Evolutionary Bioinformatics

      Volume: 14 Pages: 1-19

    • DOI

      10.1177/1176934318788337

    • NAID

      120006491545

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Acanthamoeba S13WT relies on its bacterial endosymbiont to backpack human pathogenic bacteria and resist Legionella infection on solid media.2018

    • Author(s)
      Okubo T, Matsushita M, Nakamura S, Matsuo J, Nagai H, Yamaguchi H.
    • Journal Title

      Environ Microbiol Rep

      Volume: - Issue: 3 Pages: 344-354

    • DOI

      10.1111/1758-2229.12645

    • NAID

      120006649176

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Long-term survival of Naegleria polaris from Antarctica after 10 years of storage at 4°C2018

    • Author(s)
      Matsuo Junji、Nakamura Shinji、Okubo Torahiko、Fukui Manabu、Yamaguchi Hiroyuki
    • Journal Title

      Parasitol Res

      Volume: 117 Issue: 3 Pages: 937-941

    • DOI

      10.1007/s00436-018-5779-9

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Amoebal endosymbiont Neochlamydia protects host amoebae against Legionella pneumophila infection by preventing Legionella entry2018

    • Author(s)
      Maita Chinatsu、Matsushita Mizue、Miyoshi Masahiro、Okubo Torahiko、Nakamura Shinji、Matsuo Junji、Takemura Masaharu、Miyake Masaki、Nagai Hiroki、Yamaguchi Hiroyuki
    • Journal Title

      Microbes Infect

      Volume: - Issue: 4 Pages: 236-244

    • DOI

      10.1016/j.micinf.2017.12.012

    • NAID

      120006626558

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Impact of capsaicin, an active component of chili pepper, on pathogenic chlamydial growth ( Chlamydia trachomatis and Chlamydia pneumoniae ) in immortal human epithelial HeLa cells2018

    • Author(s)
      Yamakawa Kazuya、Matsuo Junji、Okubo Torahiko、Nakamura Shinji、Yamaguchi Hiroyuki
    • Journal Title

      J Infect Chemother

      Volume: 24 Issue: 2 Pages: 130-137

    • DOI

      10.1016/j.jiac.2017.10.007

    • NAID

      120006558989

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Walker occupancy has an impact on changing airborne bacterial communities in an underground pedestrian space, as small-dust particles increased with raising both temperature and humidity2017

    • Author(s)
      Okubo Torahiko、Osaki Takako、Nozaki Eriko、Uemura Akira、Sakai Kouhei、Matushita Mizue、Matsuo Junji、Nakamura Shinji、Kamiya Shigeru、Yamaguchi Hiroyuki
    • Journal Title

      PLOS ONE

      Volume: 12 Issue: 9 Pages: e0184980-e0184980

    • DOI

      10.1371/journal.pone.0184980

    • NAID

      120006347218

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Diversity changes of microbial communities into hospital surface environments2017

    • Author(s)
      Yano Rika、Shimoda Tomoko、Watanabe Reina、Kuroki Yasutoshi、Okubo Torahiko、Nakamura Shinji、Matsuo Junji、Yoshimura Sadako、Yamaguchi Hiroyuki
    • Journal Title

      J Infect Chemother

      Volume: 23 Issue: 7 Pages: 439-445

    • DOI

      10.1016/j.jiac.2017.03.016

    • NAID

      120006491481

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 13. Ciliates promote the transfer of a plasmid encoding blaNDM-5 from Escherichia coli, isolated from a hospital in Japan, to other human pathogens.2017

    • Author(s)
      Okubo T, Matushita M, Ohara Y, Matsuo J, Oguri S, Fukumoto T, Hayasaka K, Akizawa K, Shibuya H, Shimizu C, Yamaguchi H.
    • Journal Title

      Int J Antimicrob Agents

      Volume: 49 Issue: 3 Pages: 387-388

    • DOI

      10.1016/j.ijantimicag.2017.01.003

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Draft Genome Sequences of Legionella pneumophila JR32 and Lp01 Laboratory Strains Domesticated in Japan2016

    • Author(s)
      Maita C, Matushita M, Okubo T, Matsuo J, Miyake M, Nagai H, Yamaguchi H
    • Journal Title

      Genome Announc

      Volume: 4 Issue: 4

    • DOI

      10.1128/genomea.00791-16

    • NAID

      120005955459

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Acanthamoeba containing endosymbiotic chlamydia isolated from hospital environments and its potential role in inflammatory exacerbation2016

    • Author(s)
      Fukumoto T, Matsuo J, Okubo T, Nakamura S, Miyamoto K, Oka K, Takahashi M, Akizawa K, Shibuya H, Shimizu C, Yamaguchi H
    • Journal Title

      BMC Microbiol

      Volume: 16 Pages: 292-292

    • NAID

      120005905631

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Presentation] Staphylococcus aureus prompts Escherichia coli survival under dry conditions: A potential threat from the viewpoint of nosocomial infection2018

    • Author(s)
      T. Okubo, T. Shimoda, R. Yano, S. Nakamura, J. Matsuo, H. Yamaguchi
    • Organizer
      ASM Microbe 2018(Atlanta, USA)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ciliates promote the interactive transfer of plasmid encoding blaNDM-5 between human pathogenic Escherichia coli and environmental Aeromonas caviae.2018

    • Author(s)
      M. Matsushita, T. Okubo, J. Matsuo, S. Nakamura, H. Yamaguchi
    • Organizer
      ASM Microbe 2018(Atlanta, USA)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Subtle change of host-cell density causes fatal error on monitoring the intracellular growth of Chlamydia trachomatis in a low-oxygen environment.2018

    • Author(s)
      K. Sakai, J. Matsuo, T. Okubo, S. Nakamura, H. Yamaguchi
    • Organizer
      ASM Microbe 2018(Atlanta, USA)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cyclic Luciferase Probe Reveals Caspase-3 Activation in Chlamydia-Infected Cells At Late Times During Infection.2018

    • Author(s)
      J. Matsuo, S. Haga, T. Okubo, S. Nakamura, T. Ozawa, M. Ozaki, H. Yamaguchi
    • Organizer
      ASM Microbe 2018(Atlanta, USA)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 低酸素環境においてChlamydia trachomatisの感染動態を修飾する要因: 感染実験の成否を握る鍵は何か.2018

    • Author(s)
      酒井昂平、松尾淳司、渡辺宜典、大久保寅彦、中村眞二、山口博之
    • Organizer
      第91回日本細菌学会総会. 福岡
    • Related Report
      2018 Annual Research Report
  • [Presentation] 繊毛虫はヒト病原細菌と水系環境細菌を双方向的な薬剤耐性プラスミドの接合伝達の促進作用を介して結ぶ.2018

    • Author(s)
      松下瑞江、松尾淳司、大久保寅彦、山口博之
    • Organizer
      第91回日本細菌学会総会. 福岡
    • Related Report
      2018 Annual Research Report
  • [Presentation] Chlamydia trachomatisは、感染後期に宿主細胞のカスパーゼ3を活性化する.2018

    • Author(s)
      松尾淳司、大久保寅彦、中村眞二、山口博之
    • Organizer
      第91回日本細菌学会総会. 福岡
    • Related Report
      2018 Annual Research Report
  • [Presentation] 病院で用いられる乾燥床材上における細菌間の鬩ぎ合い: 残存生菌数とATP量のギャップから紐解く細菌の生存戦略.2018

    • Author(s)
      大久保寅彦、中村眞二、松尾淳司、山口博之
    • Organizer
      第91回日本細菌学会総会. 福岡
    • Related Report
      2018 Annual Research Report
  • [Presentation] 札幌地下歩行空間における空気中浮遊細菌叢の解析: 通行人は浮遊菌叢に影響を与える.2018

    • Author(s)
      渡辺宜典、大久保寅彦、大崎敬子、松尾淳司、神谷茂、山口博之
    • Organizer
      第91回日本細菌学会総会. 福岡
    • Related Report
      2018 Annual Research Report
  • [Presentation] 低酸素環境における Chlamydia trachomatis 感染細胞 の遺伝子発現解析2017

    • Author(s)
      ○酒井 昂平,松尾 淳司,山川 和也,大久保 寅彦,中村 眞二,山口 博 之
    • Organizer
      第90回日本細菌学会総会
    • Place of Presentation
      仙台国際センター展示棟(宮城県仙台市)
    • Year and Date
      2017-03-19
    • Related Report
      2016 Annual Research Report
  • [Presentation] Endosymbiotic bacterium Neochlamydia restricts host amoebal phagocytosis via actin stabilization, resulting in the defense of the host amoebae against Legionella infection2017

    • Author(s)
      M. Matsushita, C. Maita, T. Okubo, J. Matsuo, S. Nakamura, H. Nagai, H. Yamaguchi
    • Organizer
      ASM microbe 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Amoebae backpack human pathogenic bacteria on solid-agar plate, depending upon the amoebal endosymbiont, Neochlamydia2017

    • Author(s)
      T. Okubo, M. Matsushita, J. Matsuo, S. Nakamura, H. Yamaguchi
    • Organizer
      ASM microbe 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Synergistic effect of walkers with other factors on changing airborne bacterial communities in a built environment, Sapporo underground pedestrian space2017

    • Author(s)
      K. Sakai, T. Okubo, J. Matsuo, S. Nakamura, H. Yamaguchi
    • Organizer
      ASM microbe 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Impact of Protozoa-related Giant Viruses on Environmental Chlamydial Evolution with Divergent in the Amoebal Niche2017

    • Author(s)
      Hiroyuki Yamaguchi, Sumire Yamazaki, Junji Matsuo, Torahiko Okubo
    • Organizer
      ASM microbe 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 繊毛虫はヒト病原細菌と水系環境細菌をによる水系環境菌への双方向的な薬剤耐性プラスミドの接合伝達の促進作用を介して結ぶ2017

    • Author(s)
      松下瑞江、松尾淳司、大久保寅彦、山口博之
    • Organizer
      第91回日本細菌学会総会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 病院で用いられる乾燥床材上における細菌間の鬩ぎ合い: 残存生菌数とATP量のギャップから紐解く細菌の生存戦略2017

    • Author(s)
      大久保寅彦、中村眞二、松尾淳司、山口博之
    • Organizer
      第91回日本細菌学会総
    • Related Report
      2017 Annual Research Report
  • [Presentation] 札幌地下歩行空間における空気中浮遊細菌叢の解析: 通行人は浮遊菌叢に影響を与える2017

    • Author(s)
      渡辺宜典、大久保寅彦、大崎敬子、松尾淳司、神谷茂、山口博之
    • Organizer
      第91回日本細菌学会総
    • Related Report
      2017 Annual Research Report
  • [Presentation] 繊毛虫やアメーバと細菌(環境クラミジアを含む)との鬩ぎ合いから紐解く微生物間相互作用2017

    • Author(s)
      山口博之、大久保寅彦、松尾淳司
    • Organizer
      第35回日本クラミジア研究会
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Chlamydia trachomatisは感染後期に宿主細胞のカスパーゼ3を活性化する2017

    • Author(s)
      松尾淳司、大久保寅彦、中村眞二、山口博之
    • Organizer
      第91回日本細菌学会総
    • Related Report
      2017 Annual Research Report
  • [Presentation] Degree of virginal inflammation has minimal impact on the prevalence of Chlamydia trachomatis infection on female genital tract2017

    • Author(s)
      J. Matsuo, K. Taki, T. Okubo, K. Abe, K. Minami, H. Yamaguchi
    • Organizer
      ASM microbe 2017
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Remarks]

    • URL

      https://www.hs.hokudai.ac.jp/yamaguchi/

    • Related Report
      2017 Annual Research Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

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