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Onishi-Sakamoto S, Fujii T, Watanabe K, Makida R, Iyori K, Toyoda Y, Tochio T, Nishifuji K. Erythritol alters phosphotransferase gene expression and inhibits the in vitro growth of Staphylococcus coagulans isolated from canines with pyoderma. Front Vet Sci 2024; 10:1272595. [PMID: 38239752 PMCID: PMC10794667 DOI: 10.3389/fvets.2023.1272595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 12/11/2023] [Indexed: 01/22/2024] Open
Abstract
Staphylococcus coagulans (SC) belongs to a group of coagulase-positive staphylococci occasionally isolated from the skin lesions of dogs with pyoderma. We recently revealed that erythritol, a sugar alcohol, inhibited the growth of SC strain JCM7470. This study investigated the molecular mechanisms involved in this growth inhibition of JCM7470 by erythritol, and determine whether erythritol inhibits the growth of SC isolated from the skin of dogs with pyoderma. Comprehensive analysis of the gene expression of JCM7470 in the presence of erythritol revealed that erythritol upregulated the expression of glcB and ptsG genes, both of which encode phosphotransferase system (PTS) glucoside- and glucose-specific permease C, B, and A domains (EIICBA), respectively, associated with sugar uptake. Moreover, erythritol suppressed in vitro growth of all 27 SC strains isolated from the skin lesions of canine pyoderma, including 13 mecA gene-positive and 14 mecA gene-negative strains. Finally, the growth inhibition of the SC clinical isolates by erythritol was restored by the addition of glucose. In summary, we revealed that erythritol promotes PTS gene expression and suppresses the in vitro growth of SC clinical isolates from dogs with pyoderma. Restoration of the erythritol-induced growth inhibition by glucose suggested that glucose starvation may contribute to the growth inhibition of SC.
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Affiliation(s)
- Saki Onishi-Sakamoto
- Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan
| | - Tadashi Fujii
- Department of Gastroenterology and Hepatology, Fujita Health University, Toyoake, Japan
- Department of Medical Research on Prebiotics and Probiotics, Fujita Health University, Toyoake, Japan
| | - Keito Watanabe
- Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan
| | - Reina Makida
- Research and Development Center, B Food Science Co., Ltd., Chita, Japan
| | - Keita Iyori
- Dermatological and Laboratory Service for Animals, Vet Derm Tokyo, Fujisawa, Japan
| | - Yoichi Toyoda
- Dermatological and Laboratory Service for Animals, Vet Derm Tokyo, Fujisawa, Japan
| | - Takumi Tochio
- Department of Gastroenterology and Hepatology, Fujita Health University, Toyoake, Japan
- Department of Medical Research on Prebiotics and Probiotics, Fujita Health University, Toyoake, Japan
| | - Koji Nishifuji
- Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan
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Fujii T, Tochio T, Nishifuji K. Erythritol alters gene transcriptome signatures, cell growth, and biofilm formation in Staphylococcus pseudintermedius. BMC Vet Res 2023; 19:146. [PMID: 37679756 PMCID: PMC10483758 DOI: 10.1186/s12917-023-03711-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 08/28/2023] [Indexed: 09/09/2023] Open
Abstract
BACKGROUND Erythritol was found to inhibit the growth of microorganisms. The present study aimed to demonstrate the growth inhibition of Staphylococcus pseudintermedius by erythritol and to define the changes in gene transcription signatures induced by erythritol. Changes in the gene transcription profiles were analysed by RNA sequencing and quantitative reverse transcription PCR. Gene ontology analysis was performed to assign functional descriptions to the genes. RESULTS Erythritol inhibited S. pseudintermedius growth in a dose-dependent manner. We then performed a transcriptome analysis of S. pseudintermedius with and without 5% (w/w) erythritol exposure to validate the mechanism of growth inhibition. We revealed that erythritol induced up-regulation of three genes (ptsG, ppdK, and ppdkR) that are related to the phosphoenolpyruvate-dependent sugar phosphotransferase system (PTS). Glucose supplementation restored the up-regulation of the PTS-related genes in response to erythritol. In addition, erythritol down-regulated eleven genes that are located in a single pur-operon and inhibited biofilm formation of S. pseudintermedius. CONCLUSIONS These findings indicated that erythritol antagonistically inhibits PTS-mediated glucose uptake, thereby exerting a growth inhibitory effect on S. pseudintermedius. Moreover, erythritol inhibits the 'de novo' IMP biosynthetic pathway that may contribute to biofilm synthesis in S. pseudintermedius.
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Affiliation(s)
- Tadashi Fujii
- Research & Development Center, B Food Science Co., Ltd., Aichi, Japan.
- Department of Gastroenterology and Hepatology, Fujita Health University, Aichi, Japan.
| | - Takumi Tochio
- Research & Development Center, B Food Science Co., Ltd., Aichi, Japan
- Department of Gastroenterology and Hepatology, Fujita Health University, Aichi, Japan
| | - Koji Nishifuji
- Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
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