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Functional analysis of Apaf-1 and Caspase-9 involvement in chlamydial infection

Research Project

Project/Area Number 17K07737
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Applied microbiology
Research InstitutionKindai University

Principal Investigator

Azuma Yoshinao  近畿大学, 生物理工学部, 教授 (90333509)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords宿主-寄生体相互作用 / Apaf-1 / 肺炎クラミジア / Caspase-9 / 宿主ー寄生体相互作用 / アポトーシス / caspase-9 / 動脈硬化
Outline of Final Research Achievements

Infection of Chlamydia pneumoniae involves the host proapoptotic factors, Apaf-1 and Caspase-9. As a result of screening of chlamydia factors that physically interact with Caspase-9, total 5 genes including 2 genes involved in glycogen synthesis and 2 outer membrane protein genes were isolated. It was confirmed that recombinant proteins of these factors were co-precipitated with Caspase-9. Furthermore, it was shown that the produced antibodies against these factors can neutralize Chlamydia pneumoniae infection.

Academic Significance and Societal Importance of the Research Achievements

肺炎クラミジアは流行性の風邪や肺炎の原因であり、その慢性感染は動脈硬化の発症・増悪の原因となる。この慢性感染の成立にはクラミジアによる宿主アポトーシスの制御が重要であることが示されている。我々は肺炎クラミジアが宿主アポトーシス促進因子であるcaspase-9をその感染・増殖に利用していること、またcaspase-9が肺炎クラミジアのグリコーゲンの合成に係わる因子や外膜タンパク質遺伝子と相互作用することを明らかにした。さらにその因子に対する抗体が肺炎クラミジアの感染を中和することから、クラミジアに起因する肺炎の治療や予防はもとより、動脈硬化症の予防の突破口とすべく研究を進めている。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (11 results)

All 2019 2018 2017

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (8 results) (of which Int'l Joint Research: 7 results) Book (1 results)

  • [Journal Article] Supplementation of pancreatic digestive enzymes alters the composition of intestinal microbiota in mice2018

    • Author(s)
      Hiroki Nishiyama, Tomoyuki Nagai, Masatoshi Kudo, Yoshihisa Okazaki, Yoshinao Azuma, Tomohiro Watanabe, Susumu Goto, Hiroyuki Ogata*, Toshiharu Sakurai
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 495 Pages: 273-279

    • NAID

      120006377721

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identification of Chlamydia pneumoniae candidate genes that interact with human apoptotic factor caspase-9.2018

    • Author(s)
      Md. Abdul Aziz, Rie Ushirokita, and Yoshinao Azuma
    • Journal Title

      Journal of General and Applied Microbiology

      Volume: 印刷中

    • NAID

      130007503357

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Preparation of fluoride-substituted apatite nanoparticles and evaluation of osteoblast proliferation2019

    • Author(s)
      Kazuna Umamoto, Yoshinao Azuma, Tsutomu Furuzono
    • Organizer
      The 19th Asian BioCeramics Symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Investigation of the anaphylactoid reaction using various antibacterial nanoparticles for coating materials2019

    • Author(s)
      Koji Umeda, Yoshinao Azuma, Tsutomu Furuzono
    • Organizer
      The 19th Asian BioCeramics Symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Preparation of Apatite Nanoparticles Suitable for Catheter Coating Material and Analysis of Antibacterial Mechanism2019

    • Author(s)
      Mari Oshita, Yoshinao Azuma, Tsutomu Furuzono
    • Organizer
      The 19th Asian BioCeramics Symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analysis of a Novel Plasmid of Halomonas sp. and Their Utilization2019

    • Author(s)
      Ayaka Tsuji, Taku Nishimura, Yoshinao Azuma
    • Organizer
      FEMS2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Identification of Chlamydial factors interacting with host apoptotic factor Caspase-92018

    • Author(s)
      Y. Azuma, M. A. Aziz, Y. Takei, T. Yamate, A. Tsuji, K. Okada
    • Organizer
      ASM Microbe 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 肺炎クラミジアの in vitro 感染を促進する宿主アポトーシス因子 caspase-9 が 相互作用するクラミジア因子の同定2018

    • Author(s)
      Md Abdul Aziz, 武井 靖子、山手 大士、東 慶直
    • Organizer
      第36回日本クラミジア研究会学術集会
    • Related Report
      2018 Research-status Report
  • [Presentation] Identification of Chlamydial factors interacting with host apoptotic factor Caspase-92018

    • Author(s)
      Yoshinao Azuma, MD Abdul Aziz, Yasuko Takei, Taishi Yamate, Ayaka Tsuji, Kaho Okada
    • Organizer
      ASM Microb2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] STUDY OF THE ROLE OF HOST APOPTOTIC FACTOR CASPASE-9 IN THE REGULATION OF INTRACELLULAR CHLAMYDIA INFECTION2017

    • Author(s)
      Md Abdul Aziz*, Rie Ushirokita, Yasuko Takei, Taishi Yamate, Kentaro Ogisu, Yoshinao Azuma
    • Organizer
      IUMS2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Book] 病原最近・ウイルス図鑑2017

    • Author(s)
      代表:新居 志郎, 倉田 毅, 林 英生, 本田 武司, 小田 紘, 松本 明(分担:東 慶直)
    • Total Pages
      916
    • Publisher
      北大出版
    • ISBN
      9784832982291
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2022-12-28  

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