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Kimijima M, Narisawa N, Hori E, Mandokoro K, Ito T, Ota Y, Sashida M, Kawai Y, Takenaga F. Nattokinase, a Subtilisin-like Alkaline-Serine Protease, Reduces Mutacin Activity by Inactivating the Competence-Stimulating Peptide in Streptococcus mutans. Pathogens 2024; 13:286. [PMID: 38668241 PMCID: PMC11054032 DOI: 10.3390/pathogens13040286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/22/2024] [Accepted: 03/25/2024] [Indexed: 04/29/2024] Open
Abstract
Streptococcus mutans is a major cariogenic organism because of its ability to form biofilms on tooth surfaces. Bacteriocins produced by S. mutans (known as mutacins) are indirect pathogenic factors that play a role in the persistence of this microbe in the oral environment. Nattokinase, a subtilisin-like alkaline serine protease, potently inhibits biofilm formation without affecting S. mutans growth. However, effective strategies utilizing nattokinase to control mutacin production by S. mutans are lacking. In this study, we evaluated the effect of nattokinase on mutacin activity in 46 strains of S. mutans with different mutacin genotypes isolated from the dental plaques of pediatric patients with caries. Nattokinase reduced the activity of mutacin against oral streptococci at a concentration of 1 mg/mL in all clinical isolates. Furthermore, nattokinase reduced the expression of non-lantibiotic mutacin structural genes (nlmABCD) and inactivated the extracellular competence-stimulating peptide involved in comDE activation, which regulates non-lantibiotic mutacin gene expression. These results suggest that nattokinase may reduce the virulence of S. mutans and could potentially be used as a new caries-preventive agent as an alternative to conventional drug treatments.
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Affiliation(s)
- Manami Kimijima
- Bioresource Utilization Sciences, Nihon University Graduate School of Bioresource Sciences, Fujisawa 252-0880, Kanagawa, Japan; (M.K.)
| | - Naoki Narisawa
- Bioresource Utilization Sciences, Nihon University Graduate School of Bioresource Sciences, Fujisawa 252-0880, Kanagawa, Japan; (M.K.)
| | - Eiji Hori
- Bioresource Utilization Sciences, Nihon University Graduate School of Bioresource Sciences, Fujisawa 252-0880, Kanagawa, Japan; (M.K.)
| | - Kengo Mandokoro
- Bioresource Utilization Sciences, Nihon University Graduate School of Bioresource Sciences, Fujisawa 252-0880, Kanagawa, Japan; (M.K.)
| | - Tatsuro Ito
- Department of Pediatric Dentistry, Nihon University School of Dentistry at Matsudo, Matsudo 271-8587, Chiba, Japan
- Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo, Matsudo 271-8587, Chiba, Japan
| | - Yukina Ota
- Nihon University Graduate School of Dentistry at Matsudo, Pediatric Dentistry, Matsudo 271-8587, Chiba, Japan
| | - Momoko Sashida
- Department of Pediatric Dentistry, Nihon University School of Dentistry at Matsudo, Matsudo 271-8587, Chiba, Japan
| | - Yasushi Kawai
- Bioresource Utilization Sciences, Nihon University Graduate School of Bioresource Sciences, Fujisawa 252-0880, Kanagawa, Japan; (M.K.)
| | - Fumio Takenaga
- Bioresource Utilization Sciences, Nihon University Graduate School of Bioresource Sciences, Fujisawa 252-0880, Kanagawa, Japan; (M.K.)
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Jamali N, Vahedi F, Soltani Fard E, Taheri-Anganeh M, Taghvimi S, Khatami SH, Ghasemi H, Movahedpour A. Nattokinase: Structure, applications and sources. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kimijima M, Mandokoro K, Ichikawa Y, Tokumaru M, Narisawa N, Takenaga F. Isolation and characterization of <i>Bacillus subtilis</i> from commercially available honey and its application in natto fermentation. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2022. [DOI: 10.3136/fstr.fstr-d-21-00312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Manami Kimijima
- Department of Food Bioscience and Biotechnology, College of Bioresource Sciences, Nihon University
| | - Kengo Mandokoro
- Department of Food Bioscience and Biotechnology, College of Bioresource Sciences, Nihon University
| | - Yuki Ichikawa
- Department of Food Bioscience and Biotechnology, College of Bioresource Sciences, Nihon University
| | - Mizuki Tokumaru
- Department of Food Bioscience and Biotechnology, College of Bioresource Sciences, Nihon University
| | - Naoki Narisawa
- Department of Food Bioscience and Biotechnology, College of Bioresource Sciences, Nihon University
| | - Fumio Takenaga
- Department of Food Bioscience and Biotechnology, College of Bioresource Sciences, Nihon University
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