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Investigation into degradation of extracellular peptides by Porphyromonas endodontalis

Research Project

Project/Area Number 17K17336
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Orthodontics/Pediatric dentistry
Research InstitutionNagasaki University

Principal Investigator

NISHIMATA Haruka  長崎大学, 医歯薬学総合研究科(歯学系), 助教 (10755755)

Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsPorphyromonas属 / ペプチダーゼ活性 / ジペプチジルペプチダーゼ / DPP / 歯周病原性菌 / Bacteroides門 / P. endodontalis / 菌体外多糖 / Bacteroidetes門 / 歯周病原細菌 / バクテロイデス科
Outline of Final Research Achievements

This study was biochemical analysis of dipeptidyl peptidase (DPP) produced by Porphyromonas gingivalis. Databases search revealed that the genus Porphyromonas and the genus Prevotella possess the dpp genes. These bacteria are anaerobic bacteria and grow in the subgingival plaque. The peptidase activity measurement of the human oral specimen suggested that this measurement should be utilized as the indexes of periodontal disease, because existence of periodontal disease pathogenic bacteria or not is expected by this result. Bacterial DPP4 degraded human and mouse incretin hormones and this activity was inhibited with human DPP4 inhibitor.

Academic Significance and Societal Importance of the Research Achievements

本研究での口腔サンプルを用いたDPP 活性測定により,歯周病原性菌の存在の有無が予測されたことから,DPP 活性測定は歯周病原性菌のバイオマーカーとして有用であることが示唆された.
また,我々の研究対象である dpp遺伝子の一部は,ヒトにも存在することが既知であり,ペプチド分解によって惹起される疾患の制御に繋がる可能性を持つ.本研究にて明らかとなったP. gingivalis dpp遺伝子オルソログを有する菌には,全身疾患との関連が示唆されるものが多数あるため,本研究成果は,歯周疾患だけでなくこれら全身疾患への疾患予防・治療法確立への将来的な寄与が期待される.

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (5 results)

All 2019 2018 2017

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (2 results)

  • [Journal Article] Distribution of dipeptidyl peptidase (DPP) 4, DPP5, DPP7, and DPP11 in human oral microbiota ? potent biomarkers indicating presence of periodontopathic bacteria2018

    • Author(s)
      Ohara-Nemoto Yuko、Shimoyama Yu、Nakasato Manami、Nishimata Haruka、Ishikawa Taichi、Sasaki Minoru、Kimura Shigenobu、Nemoto Takayuki K
    • Journal Title

      FEMS Microbiology Letters

      Volume: 365 Pages: 1-7

    • DOI

      10.1093/femsle/fny221

    • NAID

      120006987966

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identification of a new subtype of dipeptidyl peptidase 11 and a third group of the S46-family members specifically present in the genus Bacteroides.2018

    • Author(s)
      Nemoto TK, Bezerra GA, Ono T, Nishimata H, Fujiwara T, Ohara-Nemoto Y.
    • Journal Title

      Biochimie

      Volume: 147 Pages: 25-35

    • DOI

      10.1016/j.biochi.2017.10.015

    • NAID

      120006987398

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Draft Genome Sequence of a Clinical Isolate of Streptococcus mutans Strain HM2017

    • Author(s)
      Kondo Yoshio、Nishimata Haruka、Hidaka Kiyoshi、Hasuwa Tomoyuki、Moriuchi Hiroyuki、Fujiwara Taku、Hoshino Tomonori
    • Journal Title

      Genome Announcements

      Volume: 5 Issue: 33

    • DOI

      10.1128/genomea.00826-17

    • NAID

      120006987419

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 歯周病原性菌バイオマーカーとしてのジペプチジルペプチダーゼの有用性2019

    • Author(s)
      西俣はるか,藤原 卓
    • Organizer
      日本小児歯科学会
    • Related Report
      2019 Research-status Report
  • [Presentation] 根尖性歯周炎後にアペキソゲネシス様治癒機転となった根未完成歯2例2018

    • Author(s)
      福本志保, 今村圭吾, 有田幸太郎, 西俣はるか, 西口美由季, 釜崎陽子, 藤原卓
    • Organizer
      第36回日本小児歯科学会九州地方会大会および総会
    • Related Report
      2018 Research-status Report

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Published: 2017-04-28   Modified: 2022-01-27  

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