Development of a novel inhibitor cocktail targeting peptidases from sugar non-fermentative bacteria
Project/Area Number |
19H02876
|
Research Category |
Grant-in-Aid for Scientific Research (B)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 38020:Applied microbiology-related
|
Research Institution | Kitasato University (2020-2022) Showa University (2019) |
Principal Investigator |
|
Project Period (FY) |
2019-04-01 – 2023-03-31
|
Project Status |
Completed (Fiscal Year 2022)
|
Budget Amount *help |
¥13,520,000 (Direct Cost: ¥10,400,000、Indirect Cost: ¥3,120,000)
Fiscal Year 2022: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2021: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2020: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2019: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
|
Keywords | 糖非発酵性細菌 / ペプチダーゼ / 立体構造 / 抗菌剤 / ドラッグデザイン / 結晶構造解析 / 歯周病 / 多剤耐性菌 |
Outline of Research at the Start |
糖非発酵性グラム陰性細菌は、ブドウ糖ではなく、蛋白質やペプチドをエネルギー源とする。近年同定されたS46型ペプチダーゼ類は、ヒトに存在しないジペプチジルペプチダーゼであり、細菌ペリプラズムにおいて他のペプチダーゼ類と協調的に種々のペプチドを分解する。本研究では、新規作用機序の抗菌剤を開発するため、歯周病原因菌あるいは多剤耐性菌等の糖非発酵性細菌が持つS46ペプチダーゼ類に関する生化学的解析や立体構造解析、in silico, in vitro両面での阻害剤探索と酵素/阻害剤複合体の立体構造解析に基づく阻害剤の構造最適化研究を展開する。
|
Outline of Final Research Achievements |
Peptidases belonging to the S46 family are absent in humans and are ideal targets for novel antibiotics. In the case of dipeptidyl peptidase 11 (PgDPP11) from the periodontopathogen Porphyromonas gingivalis, we found a completely novel skeleton of PgDPP11 inhibitor based on a pharmacophore model of the binding mode of SH-5, a nonpeptidic PgDPP11 inhibitor found in our previous studies. For DPP7 from the multidrug-resistant Stenotrophomonas maltophilia, we elucidated the molecular mechanism of substrate preference at the S2 subsite by biochemical analyses and high-resolution crystal structure analyses of the complex with four kinds of dipeptides. SmDPP7 prefers more bulky amino acids as P2 residues, but exceptionally, it can successfully recognize asparagine side chains by a hydrogen bond network.
|
Academic Significance and Societal Importance of the Research Achievements |
歯周病原因菌Porphyromonas gingivalisや多剤耐性菌Stenotrophomonas maltophiliaは糖ではなく蛋白質やペプチドをエネルギー源とする「糖非発酵性細菌」である。従って、これらの菌のペプチド代謝経路を阻害するような化合物は新規抗生物質と成り得る。従って、本研究の学術的意義は、糖非発酵性細菌を標的とした新規抗生物質開発に繋がるものである。また、本研究の社会的意義として、製薬企業は感染症関連研究に対して消極的なため大学研究者による抗生物質開発に繋がる基盤研究は社会的に極めて重要であることを強調したい。
|
Report
(5 results)
Research Products
(32 results)
-
-
[Journal Article] Structural basis for an exceptionally strong preference for asparagine residue at the S2 subsite of Stenotrophomonas maltophilia dipeptidyl peptidase 72021
Author(s)
22)Akihiro Nakamura, Yoshiyuki Suzuki, Yasumitsu Sakamoto, Saori Roppongi, Chisato Kushibiki, Natsuri Yonezawa, Masato Takahashi, Yosuke Shida, Hiroaki Gouda, Takamasa Nonaka, Nobutada Tanaka, Wataru Ogasawara
-
Journal Title
scinentific reports
Volume: 11
Issue: 1
Pages: 7929-7929
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
-
-
[Journal Article] Fragment-based discovery of the first non-peptidyl inhibitor for dipeptidyl aminopeptidase with chymotrypsin-like domain from pathogens2020
Author(s)
Sakamoto, Y., Suzuki, Y., Nakamura, A., Sekiya, M., Ogasawara, W., & Tanaka, N.
-
Journal Title
Photon Factory Highlights 2019
Volume: -
Pages: 56-57
Related Report
Peer Reviewed
-
[Journal Article] Fragment-based discovery of the first nonpeptidyl inhibitor of an S46 family peptidase2019
Author(s)
YasumitsuSakamoto,YoshiyukiSuzuki,AkihiroNakamura,YurieWatanabe,MizukiSekiya,SaoriRoppongi,ChisatoKushibiki,IppeiIizuka,OsamuTani,HitoshiSakashita,KojiInaka,HiroakiTanaka,MitsuguYamada,KazunoriOhta,NobuyukiHonma,YosukeShida,WataruOgasawara,MayumiNakanishi-Matsui,TakamasaNonaka,HiroakiGouda & NobutadaTanaka
-
Journal Title
Scientific Reports
Volume: 9
Issue: 1
Pages: 13587-13587
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
-
-
-
-
[Presentation] 多剤耐性菌Stenotrophomonas maltophilia DPP7に対する抗菌薬開発に向けた阻害剤開発の構造基盤2022
Author(s)
阪本泰光, 中村彰宏, 鈴木義之, 六本木沙織, 櫛引千里, 米澤 夏里, 高橋聖人, 志田洋介, 合田浩明, 野中孝昌, 田中信忠, 小笠原渉
Organizer
日本薬学会第142年会
Related Report
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] Development of antimicrobial dipeptides targeting dipeptidyl peptidase 7 of Stenotrophomonas maltophilia2020
Author(s)
Koushi Hidaka, Taisei Hashimoto, Takumi Seki, Yuki Sakurai, Yasumitsu Sakamoto, Saori Roppongi, Mizuki Sekiya, Akihiro Nakamura, Wataru Ogasawara, Yoshiyuki Suzuki, Nobutada Tanaka, Anna Miyazaki, Keiko Hojo, & Yuko Tsuda
Organizer
第57回ペプチド討論会
Related Report
-
-
-
-
-
-