Examination of the persistent infection mechanism of Helicobacter pylori by phage lysogenization
Project/Area Number |
18K07127
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 49050:Bacteriology-related
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Research Institution | Azabu University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
松崎 茂展 高知大学, 医学部, 客員教授 (00190439)
林 俊治 北里大学, 医学部, 教授 (40260765)
阪口 義彦 北里大学, 医学部, 講師 (70403491)
三室 仁美 大阪大学, 微生物病研究所, 准教授 (80396887)
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Project Period (FY) |
2018-04-01 – 2021-03-31
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Project Status |
Completed (Fiscal Year 2020)
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Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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Keywords | ファージ / ピロリ菌 / 溶原化 / 慢性感染 |
Outline of Final Research Achievements |
Helicobacter pylori is a pathogenic bacterium involved in diseases, for example, chronic gastritis, gastric ulcer, and gastric cancer. Since phages often have useful genes for host bacteria, phage lysogenization to bacteria can confer the bacteria the traits such as survival strategy in the environment and pathogenicity. In recent years, lysogenic phage infecting H. pylori has been discovered. Since many defective phages have been often found In the H. pylori genomes, the traits are expected to be conferred to H. pylori by phage infections. However, the traits of H. pylori by phage lysogenization are hardly understood. In this study, lysogenization of H. pylori phages was clarified to improve the bacterial mobility.
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Academic Significance and Societal Importance of the Research Achievements |
申請者は、ピロリ菌ファージの発見者であり、ピロリ菌の内在化に関する研究を世界に先駆けて行った。その成果として、ファージの内在化によりピロリ菌の運動性を向上させることを明らかにし、その活性が慢性感染の要因となっている可能性に着目した。本研究は学術的に新規であり、本現象は、2018年にはMicrobiology誌に報告することができた。現在、研究を継続しており、今後、更なる研究成果が期待される。また、本研究の成果は、ピロリ菌で問題となる慢性感染を引き起こす要因となる可能性があるため、今後、創薬の標的となる可能性もあり社会的な意義も高いものと考えらる。
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Report
(4 results)
Research Products
(106 results)
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[Journal Article] In Vitro and In Vivo Evaluation of Three Newly Isolated Bacteriophage Candidates, phiEF7H, phiEF14H1, phiEF19G, for Treatment of Enterococcus faecalis Endophthalmitis2021
Author(s)
Kishimoto T, Ishida W, Nasukawa T, Ujihara T, Nakajima I, Suzuki T, Uchiyama J, Todokoro D, Daibata M, Fukushima A, Matsuzaki S, Fukuda K.
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Journal Title
Microorganisms
Volume: 9
Issue: 2
Pages: 212-212
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Analysis of a plasmid encoding botulinum neurotoxin type G gene in Clostridium argentinense2020
Author(s)
Sakaguchi, Y., Uchiyama, J., Take, A., Gotoh, K., Sakaguchi, M., Suzuki, T., Yamamoto, Y., Hosomi, K., Kohda, T., Mukamoto, M., Kozaki, S., Hayashi, S., Oguma, K.
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Journal Title
Anaerobe
Volume: 66
Pages: 102281-102281
DOI
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Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Taxonomy of prokaryotic viruses: 2018-2019 update from the ICTV Bacterial and Archaeal Viruses Subcommittee2020
Author(s)
Adriaenssens EM, Sullivan MB, Knezevic P, van Zyl LJ, Sarkar BL, Dutilh BE, Alfenas-Zerbini P, Lobocka M, Tong Y, Brister JR, Moreno Switt AI, Klumpp J, Aziz RK, Barylski J, Uchiyama J, et al.
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Journal Title
Arch Virol
Volume: 165
Issue: 5
Pages: 1253-1260
DOI
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Peer Reviewed / Int'l Joint Research
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[Journal Article] Piperacillin and ceftazidime produce the strongest synergistic phage-antibiotic effect in Pseudomonas aeruginosa.2018
Author(s)
Uchiyama J, Shigehisa R, Nasukawa T, Mizukami K, Takemura-Uchiyama I, Ujihara T, Murakami H, Imanishi I, Nishifuji K, Sakaguchi M, Matsuzaki S.
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Journal Title
Archives of Virology
Volume: in press
Issue: 7
Pages: 1-8
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Recovery of mycobacteriophages from archival stocks stored for approximately 50 years in Japan.2018
Author(s)
Ujihara T, Uchiyama J, Nasukawa T, Ando H, Murakami H, Ohara N, Ogawa M, Yamazaki T, Daibata M, Sakaguchi M, Matsuzaki S.
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Journal Title
Archives of Virology
Volume: in press
Issue: 7
Pages: 1-5
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Taxonomy of prokaryotic viruses: 2017 update from the ICTV Bacterial and Archaeal Viruses Subcommittee2018
Author(s)
Adriaenssens EM, Wittmann J, Kuhn JH, Turner D, Sullivan MB, Dutilh BE, Jang HB, van Zyl LJ, Klumpp J, Lobocka M, Moreno Switt AI, Rumnieks J, Edwards RA, Uchiyama J, et al.
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Journal Title
Archives of Virology
Volume: 163
Issue: 4
Pages: 1125-1129
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] IgE reactivity to allergens isolated from Pacific cod (Gadus macrocephalus) fish in dogs with canine atopic dermatitis2019
Author(s)
Imanishi I, Uchiyama J, Matsuda T, Mizukami K, Shimakura H, Nasukawa T, Kamiie J, Kurata K, Fujimura M, Shimakura K, Nishifuj K, Sakaguchi M
Organizer
American Academy of Allergy Asthma and Immunology 2019 Annual Meeting
Related Report
Int'l Joint Research
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[Presentation] Recovery of mycobacteriophages from archival stocks stored for approximately 50 years in Japan2018
Author(s)
Uchiyama J, Mizukami K, Yahara K, Kato S, Murakami H, Nasukawa T, Ohara N, Ogawa M, Yamazaki T, Matsuzaki S, Sakaguchi M
Organizer
EMBO Workshop, Viruses of Microbes
Related Report
Int'l Joint Research
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[Presentation] Recovery of mycobacteriophages from archival stocks stored for approximately 50 years in Japan2018
Author(s)
Jumpei Uchiyama, Keijiro Mizukami, Koji Yahara, Shinichiro Kato, Hironobu Murakami, Tadahiro Nasukawa, Naoya Ohara, Midori Ogawa, Toshio Yamazaki, Shigenobu Matsuzaki, Masahiro Sakaguchi
Organizer
第7回ファージ研究会・2018年日本細菌学会関東支部インターラボセミナー合同大会
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