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Yamada T, Yamamori Y, Matsuda N, Nagamune H, Ohkura K, Tomoyasu T, Tabata A. Streptolysin S induces pronounced calcium-ion influx-dependent expression of immediate early genes encoding transcription factors. Sci Rep 2023; 13:13720. [PMID: 37608082 PMCID: PMC10444759 DOI: 10.1038/s41598-023-40981-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 08/19/2023] [Indexed: 08/24/2023] Open
Abstract
Anginosus group streptococci (AGS) are opportunistic human pathogens of the oral cavity. The β-hemolytic subgroup of Streptococcus anginosus subsp. anginosus secretes streptolysin S (SLS) and exhibits not only hemolytic activity but also cytotoxicity toward cultured human cell lines. However, the detailed mechanism of action of SLS and the cellular responses of host cells have not yet been fully clarified. To determine the pathogenic potential of SLS-producing β-hemolytic S. anginosus subsp. anginosus, the SLS-dependent response induced in the human oral squamous cell carcinoma HSC-2 cells was investigated to determine the pathogenic potential of SLS-producing β-hemolytic S. anginosus subsp. anginosus. This study revealed that the Ca2+ influx and the expression of immediate early genes (IEGs) encoding transcription factors such as early growth responses (EGRs) and activator protein-1 (AP-1) were greatly increased in HSC-2 cells incubated with the culture supernatant of SLS-producing β-hemolytic S. anginosus subsp. anginosus. Moreover, this SLS-dependent increase in expression was significantly suppressed by Ca2+ chelation, except for jun. These results suggest that SLS caused Ca2+ influx into the cells following greatly enhanced expression of IEG-encoding transcription factors. The results of this study may help in understanding the pathogenicity of SLS-producing AGS.
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Affiliation(s)
- Takuya Yamada
- Department of Biological Science and Technology, Life System, Institute of Technology and Science, Tokushima University Graduate School, 2-1 Minamijousanjima-Cho, Tokushima, Tokushima, 770-8506, Japan
| | - Yugo Yamamori
- Faculty of Bioscience and Bioindustry, Bioengineering Course, Tokushima University, 2-1 Minamijousanjima-Cho, Tokushima, Tokushima, 770-8513, Japan
| | - Nanami Matsuda
- Faculty of Bioscience and Bioindustry, Bioengineering Course, Tokushima University, 2-1 Minamijousanjima-Cho, Tokushima, Tokushima, 770-8513, Japan
| | - Hideaki Nagamune
- Department of Biological Science and Technology, Life System, Institute of Technology and Science, Tokushima University Graduate School, 2-1 Minamijousanjima-Cho, Tokushima, Tokushima, 770-8506, Japan
- Faculty of Bioscience and Bioindustry, Bioengineering Course, Tokushima University, 2-1 Minamijousanjima-Cho, Tokushima, Tokushima, 770-8513, Japan
- Department of Bioengineering, Division of Bioscience and Bioindustry, Graduate School of Technology, Industrial and Social Sciences, Tokushima University Graduate School, 2-1 Minamijousanjima-Cho, Tokushima, Tokushima, 770-8513, Japan
| | - Kazuto Ohkura
- Division of Clinical Pharmacy and Pharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Suzuka University of Medical Science, 3500-3 Minamitamagaki-Cho, Suzuka, Mie, 513-8670, Japan
| | - Toshifumi Tomoyasu
- Department of Biological Science and Technology, Life System, Institute of Technology and Science, Tokushima University Graduate School, 2-1 Minamijousanjima-Cho, Tokushima, Tokushima, 770-8506, Japan
- Faculty of Bioscience and Bioindustry, Bioengineering Course, Tokushima University, 2-1 Minamijousanjima-Cho, Tokushima, Tokushima, 770-8513, Japan
- Department of Bioengineering, Division of Bioscience and Bioindustry, Graduate School of Technology, Industrial and Social Sciences, Tokushima University Graduate School, 2-1 Minamijousanjima-Cho, Tokushima, Tokushima, 770-8513, Japan
| | - Atsushi Tabata
- Department of Biological Science and Technology, Life System, Institute of Technology and Science, Tokushima University Graduate School, 2-1 Minamijousanjima-Cho, Tokushima, Tokushima, 770-8506, Japan.
- Faculty of Bioscience and Bioindustry, Bioengineering Course, Tokushima University, 2-1 Minamijousanjima-Cho, Tokushima, Tokushima, 770-8513, Japan.
- Department of Bioengineering, Division of Bioscience and Bioindustry, Graduate School of Technology, Industrial and Social Sciences, Tokushima University Graduate School, 2-1 Minamijousanjima-Cho, Tokushima, Tokushima, 770-8513, Japan.
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2
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Yokohata S, Ohkura K, Nagamune H, Tomoyasu T, Tabata A. Human serum albumin stabilizes streptolysin S activity secreted in the extracellular milieu by streptolysin S-producing streptococci. Microbiol Immunol 2023; 67:58-68. [PMID: 36478453 DOI: 10.1111/1348-0421.13042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 12/03/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022]
Abstract
Anginosus group streptococci (AGS) are opportunistic pathogens of the human oral cavity; however, their pathogenicity has not been discussed in detail. Oral streptococci live in the gingival sulcus, from where they can easily translocate into the bloodstream due to periodontal diseases and dental treatment and cause hazardous effects on the host through their virulence factors. Streptolysin S (SLS), a pathogenic factor produced by β-hemolytic species/strains belonging to AGS, plays an important role in damaging host cells. Therefore, we investigated the SLS-dependent cytotoxicity of β-hemolytic Streptococcus anginosus subsp. anginosus (SAA), focusing on different growth conditions such as in the bloodstream. Consequently, SLS-dependent hemolytic activity/cytotoxicity in the culture supernatant of β-hemolytic SAA was stabilized by blood components, particularly human serum albumin (HSA). The present study suggests that the secreted SLS, not only from β-hemolytic SAA, but also from other SLS-producing streptococci, is stabilized by HSA. As HSA is the most abundant protein in human plasma, the results of this study provide new insights into the risk of SLS-producing streptococci which can translocate into the bloodstream.
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Affiliation(s)
- Shuto Yokohata
- Division of Bioresource Science, Graduate School of Sciences and Technology for Innovation, Tokushima University Graduate School, Tokushima, Japan
| | - Kazuto Ohkura
- Division of Clinical Pharmacy and Pharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka, Mie, Japan
| | - Hideaki Nagamune
- Division of Bioresource Science, Graduate School of Sciences and Technology for Innovation, Tokushima University Graduate School, Tokushima, Japan.,Department of Bioengineering, Division of Bioscience and Bioindustry, Graduate School of Technology, Industrial and Social Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Toshifumi Tomoyasu
- Division of Bioresource Science, Graduate School of Sciences and Technology for Innovation, Tokushima University Graduate School, Tokushima, Japan.,Department of Bioengineering, Division of Bioscience and Bioindustry, Graduate School of Technology, Industrial and Social Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Atsushi Tabata
- Division of Bioresource Science, Graduate School of Sciences and Technology for Innovation, Tokushima University Graduate School, Tokushima, Japan.,Department of Bioengineering, Division of Bioscience and Bioindustry, Graduate School of Technology, Industrial and Social Sciences, Tokushima University Graduate School, Tokushima, Japan
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3
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Kuryłek A, Stasiak M, Kern-Zdanowicz I. Virulence factors of Streptococcus anginosus - a molecular perspective. Front Microbiol 2022; 13:1025136. [PMID: 36386673 PMCID: PMC9643698 DOI: 10.3389/fmicb.2022.1025136] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 10/10/2022] [Indexed: 07/21/2023] Open
Abstract
Streptococcus anginosus together with S. constellatus and S. intermedius constitute the Streptococcus anginosus group (SAG), until recently considered to be benign commensals of the human mucosa isolated predominantly from oral cavity, but also from upper respiratory, intestinal, and urogenital tracts. For years the virulence potential of SAG was underestimated, mainly due to complications in correct species identification and their assignment to the physiological microbiota. Still, SAG representatives have been associated with purulent infections at oral and non-oral sites resulting in abscesses formation and empyema. Also, life threatening blood infections caused by SAG have been reported. However, the understanding of SAG as potential pathogen is only fragmentary, albeit certain aspects of SAG infection seem sufficiently well described to deserve a systematic overview. In this review we summarize the current state of knowledge of the S. anginosus pathogenicity factors and their mechanisms of action.
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Pilarczyk-Zurek M, Sitkiewicz I, Koziel J. The Clinical View on Streptococcus anginosus Group – Opportunistic Pathogens Coming Out of Hiding. Front Microbiol 2022; 13:956677. [PMID: 35898914 PMCID: PMC9309248 DOI: 10.3389/fmicb.2022.956677] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 06/17/2022] [Indexed: 11/13/2022] Open
Abstract
Three distinct streptococcal species: Streptococcus anginosus, Streptococcus intermedius, and Streptococcus constellatus, belonging to the Streptococcus anginosus group (SAG), also known as Streptococcus milleri group, have been attracting clinicians and microbiologists, not only as oral commensals but also as opportunistic pathogens. For years they have been simply classified as so called viridans streptococci, and distinct species were not associated with particular clinical manifestations. Therefore, description of SAG members are clearly underrepresented in the literature, compared to other medically relevant streptococci. However, the increasing number of reports of life-threatening infections caused by SAG indicates their emerging pathogenicity. The improved clinical data generated with the application of modern molecular diagnostic techniques allow for precise identification of individual species belonging to SAG. This review summarizes clinical reports on SAG infections and systematizes data on the occurrence of individual species at the site of infection. We also discuss the issue of proper microbiological diagnostics, which is crucial for further clinical treatment.
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Affiliation(s)
- Magdalena Pilarczyk-Zurek
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Izabela Sitkiewicz
- Center for Translational Medicine, Warsaw University of Life Sciences (SGGW), Warszawa, Poland
| | - Joanna Koziel
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
- *Correspondence: Joanna Koziel,
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Sukhikh S, Asyakina L, Korobenkov M, Skrypnik L, Pungin A, Ivanova S, Larichev T, Larina V, Krol O, Ulrikh E, Chupakhin E, Babich O. Chemical Composition and Content of Biologically Active Substances Found in Cotinus coggygria, Dactylorhiza maculata, Platanthera chlorantha Growing in Various Territories. PLANTS 2021; 10:plants10122806. [PMID: 34961277 PMCID: PMC8707839 DOI: 10.3390/plants10122806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/14/2021] [Accepted: 12/15/2021] [Indexed: 11/16/2022]
Abstract
Medicinal plants (Cotinus coggygria, Dactylorhiza maculata, Platanthera chlorantha) growing in various territories (Kaliningrad, Moscow, and Minsk regions) were the objects of research. This paper presents a study of the chemical composition of these plants. To analyze the qualitative and quantitative composition of biologically active substances, the method of high-performance liquid chromatography was used. Atomic absorption spectrometry was used to study the content of trace elements. The content of organic acids and vitamins was determined by capillary electrophoresis using the Kapel-105/105M capillary electrophoresis system with high negative polarity. Extracts of medicinal plants were obtained on a Soxhlet apparatus using 70% ethanol as an extractant. It was found that among the biologically active substances in the plants under discussion, hyperoside, rutin (C. coggygria), Ferulic acid and Gallic acid (D. maculata), triene hydrocarbon (3,7-Dimethyl-1,3,6-octatriene), unsaturated alcohol (3,7-Dimethyl-2,6-octadien-1-ol), and benzyl acetate (P. chlorantha) prevailed. Samples of these medicinal plants contained trace elements (phosphorus, potassium, calcium, sodium, magnesium, and sulfur) and many aliphatic organic acids (succinic acid, benzoic acid, fumaric acid, citric acid, oxalic acid, and tartaric acid). The largest amount of biologically active substances and secondary metabolites of the studied plants from the Eastern Baltic is associated with climatic and ecological differences from other regions. The composition of these plants determines the potential of their use in feed additives for livestock and poultry as part of measures to improve the quality of livestock products. The use of medicinal plants for the production of feed additives is relevant in terms of improving regional economies, as well as improving the quality of life and nation’s health by providing ecologically clean livestock products.
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Affiliation(s)
- Stanislav Sukhikh
- Institute of Living Systems, Immanuel Kant Baltic Federal University, A. Nevskogo Street 14, 236016 Kaliningrad, Russia; (S.S.); (L.S.); (A.P.); (V.L.); (O.K.); (E.C.); (O.B.)
| | - Lyudmila Asyakina
- International Research Center “X-ray Coherent Optics”, Immanuel Kant Baltic Federal University, A. Nevskogo Street 14, 236016 Kaliningrad, Russia; (L.A.); (M.K.)
- Department of Bionanotechnology, Kemerovo State University, Krasnaya Street 6, 650043 Kemerovo, Russia
| | - Maxim Korobenkov
- International Research Center “X-ray Coherent Optics”, Immanuel Kant Baltic Federal University, A. Nevskogo Street 14, 236016 Kaliningrad, Russia; (L.A.); (M.K.)
| | - Liubov Skrypnik
- Institute of Living Systems, Immanuel Kant Baltic Federal University, A. Nevskogo Street 14, 236016 Kaliningrad, Russia; (S.S.); (L.S.); (A.P.); (V.L.); (O.K.); (E.C.); (O.B.)
| | - Artem Pungin
- Institute of Living Systems, Immanuel Kant Baltic Federal University, A. Nevskogo Street 14, 236016 Kaliningrad, Russia; (S.S.); (L.S.); (A.P.); (V.L.); (O.K.); (E.C.); (O.B.)
| | - Svetlana Ivanova
- Natural Nutraceutical Biotesting Laboratory, Kemerovo State University, Krasnaya Street 6, 650043 Kemerovo, Russia
- Department of General Mathematics and Informatics, Kemerovo State University, Krasnaya Street 6, 650043 Kemerovo, Russia
- Correspondence: ; Tel.: +7-384-239-6832
| | - Timothy Larichev
- Department of Fundamental and Applied Chemistry, Kemerovo State University, Krasnaya Street, 6, 650043 Kemerovo, Russia;
| | - Viktoria Larina
- Institute of Living Systems, Immanuel Kant Baltic Federal University, A. Nevskogo Street 14, 236016 Kaliningrad, Russia; (S.S.); (L.S.); (A.P.); (V.L.); (O.K.); (E.C.); (O.B.)
| | - Olesia Krol
- Institute of Living Systems, Immanuel Kant Baltic Federal University, A. Nevskogo Street 14, 236016 Kaliningrad, Russia; (S.S.); (L.S.); (A.P.); (V.L.); (O.K.); (E.C.); (O.B.)
| | - Elena Ulrikh
- Institute of Agroengineering and Food System, Kaliningrad State Technical University, Soviet Avenue, 1, 236022 Kaliningrad, Russia;
| | - Evgeny Chupakhin
- Institute of Living Systems, Immanuel Kant Baltic Federal University, A. Nevskogo Street 14, 236016 Kaliningrad, Russia; (S.S.); (L.S.); (A.P.); (V.L.); (O.K.); (E.C.); (O.B.)
| | - Olga Babich
- Institute of Living Systems, Immanuel Kant Baltic Federal University, A. Nevskogo Street 14, 236016 Kaliningrad, Russia; (S.S.); (L.S.); (A.P.); (V.L.); (O.K.); (E.C.); (O.B.)
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6
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Tabata A, Nagamune H. Diversity of β-hemolysins produced by the human opportunistic streptococci. Microbiol Immunol 2021; 65:512-529. [PMID: 34591320 DOI: 10.1111/1348-0421.12936] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 11/28/2022]
Abstract
The genus Streptococcus infects a broad range of hosts, including humans. Some species, such as S. pyogenes, S. agalactiae, S. pneumoniae, and S. mutans, are recognized as the major human pathogens, and their pathogenicity toward humans has been investigated. However, many of other streptococcal species have been recognized as opportunistic pathogens in humans, and their clinical importance has been underestimated. In our previous study, the Anginosus group streptococci (AGS) and Mitis group streptococci (MGS) showed clear β-hemolysis on blood agar, and the factors responsible for the hemolysis were homologs of two types of β-hemolysins, cholesterol-dependent cytolysin (CDC) and streptolysin S (SLS). In contrast to the regular β-hemolysins produced by streptococci (typical CDCs and SLSs), genetically, structurally, and functionally atypical β-hemolysins have been observed in AGS and MGS. These atypical β-hemolysins are thought to affect and contribute to the pathogenic potential of opportunistic streptococci mainly inhabiting the human oral cavity. In this review, we introduce the diverse characteristics of β-hemolysin produced by opportunistic streptococci, focusing on the species/strains belonging to AGS and MGS, and discuss their pathogenic potential.
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Affiliation(s)
- Atsushi Tabata
- Department of Bioengineering, Division of Bioscience and Bioindustry, Graduate School of Technology, Industrial and Social Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Hideaki Nagamune
- Department of Bioengineering, Division of Bioscience and Bioindustry, Graduate School of Technology, Industrial and Social Sciences, Tokushima University Graduate School, Tokushima, Japan
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7
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Bacteriocins in the Era of Antibiotic Resistance: Rising to the Challenge. Pharmaceutics 2021; 13:pharmaceutics13020196. [PMID: 33540560 PMCID: PMC7912925 DOI: 10.3390/pharmaceutics13020196] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 01/28/2021] [Accepted: 01/29/2021] [Indexed: 02/07/2023] Open
Abstract
Decades of antibiotic misuse in clinical settings, animal feed, and within the food industry have led to a concerning rise in antibiotic-resistant bacteria. Every year, antimicrobial-resistant infections cause 700,000 deaths, with 10 million casualties expected by 2050, if this trend continues. Hence, innovative solutions are imperative to curb antibiotic resistance. Bacteria produce a potent arsenal of drugs with remarkable diversity that are all distinct from those of current antibiotics. Bacteriocins are potent small antimicrobial peptides synthetized by certain bacteria that may be appointed as alternatives to traditional antibiotics. These molecules are strategically employed by commensals, mostly Firmicutes, to colonize and persist in the human gut. Bacteriocins form channels in the target cell membrane, leading to leakage of low-molecular-weight, causing the disruption of the proton motive force. The objective of this review was to list and discuss the potential of bacteriocins as antimicrobial therapeutics for infections produced mainly by resistant pathogens.
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Zhang X, Gu S, You L, Xu Y, Zhou D, Chen Y, Yan R, Jiang H, Li Y, Lv L, Qian W. Gut Microbiome and Metabolome Were Altered and Strongly Associated With Platelet Count in Adult Patients With Primary Immune Thrombocytopenia. Front Microbiol 2020; 11:1550. [PMID: 32733424 PMCID: PMC7360729 DOI: 10.3389/fmicb.2020.01550] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 06/16/2020] [Indexed: 12/12/2022] Open
Abstract
Gut microbiota has been implicated in the pathogenesis of many autoimmune diseases. This is still an area of active research given that the role of gut microbiota on the primary immune thrombocytopenia (ITP) remains unclear. In this study, fecal samples of 30 untreated adult primary ITP patients and 29 healthy controls (HCs) were used to investigate the gut microbial community and metabolite profiles. Our results show that fecal bacteria such as Blautia, Streptococcus, and Lactobacillus are enriched, whereas bacteria such as Bacteroides are depleted in ITP patients. Notably, fecal metabolites such as fatty acyls and glycerophospholipids are enriched and strongly correlate with discrepant gut microbiota. Furthermore, combinations of Weissella and Streptococcus anginosus, or Cer (t18:0/16:0), Cer (d18:1/17:0), and 13-hydroxyoctadecanoic acid could provide good diagnostic markers for ITP. Moreover, a strong negative correlation was found between platelet count and altered gut microbiota such as S. anginosus and gut metabolites such as Cer (t18:0/16:0) in ITP. In conclusion, dysbiosis of both gut microbiota and metabolome develops in ITP patients compared to HCs. Several ITP-altered gut bacteria and metabolites can be diagnostic biomarkers for ITP, and are highly correlated with platelet count, suggesting that they may also play a role in ITP pathogenesis.
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Affiliation(s)
- Xuewu Zhang
- Department of Hematology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Hematopoietic Malignancies in Zhejiang Province, Hangzhou, China.,Institute of Hematology, Zhejiang University, Hangzhou, China
| | - Silan Gu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Liangshun You
- Department of Hematology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Hematopoietic Malignancies in Zhejiang Province, Hangzhou, China.,Institute of Hematology, Zhejiang University, Hangzhou, China
| | - Yu Xu
- Department of Hematology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Hematopoietic Malignancies in Zhejiang Province, Hangzhou, China.,Institute of Hematology, Zhejiang University, Hangzhou, China
| | - De Zhou
- Department of Hematology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Hematopoietic Malignancies in Zhejiang Province, Hangzhou, China.,Institute of Hematology, Zhejiang University, Hangzhou, China
| | - Yunbo Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Ren Yan
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Huiyong Jiang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Yating Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Longxian Lv
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Wenbin Qian
- Institute of Hematology, Zhejiang University, Hangzhou, China.,Department of Hematology, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Meade E, Slattery MA, Garvey M. Bacteriocins, Potent Antimicrobial Peptides and the Fight against Multi Drug Resistant Species: Resistance Is Futile? Antibiotics (Basel) 2020; 9:antibiotics9010032. [PMID: 31963311 PMCID: PMC7168330 DOI: 10.3390/antibiotics9010032] [Citation(s) in RCA: 144] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 01/10/2020] [Accepted: 01/13/2020] [Indexed: 12/12/2022] Open
Abstract
Despite highly specialized international interventions and policies in place today, the rapid emergence and dissemination of resistant bacterial species continue to occur globally, threatening the longevity of antibiotics in the medical sector. In particular, problematic nosocomial infections caused by multidrug resistant Gram-negative pathogens present as a major burden to both patients and healthcare systems, with annual mortality rates incrementally rising. Bacteriocins, peptidic toxins produced by bacteria, offer promising potential as substitutes or conjugates to current therapeutic compounds. These non-toxic peptides exhibit significant potency against certain bacteria (including multidrug-resistant species), while producer strains remain insusceptible to the bactericidal peptides. The selectivity and safety profile of bacteriocins have been highlighted as superior advantages over traditional antibiotics; however, many aspects regarding their efficacy are still unknown. Although active at low concentrations, bacteriocins typically have low in vivo stability, being susceptible to degradation by proteolytic enzymes. Another major drawback lies in the feasibility of large-scale production, with these key features collectively limiting their current clinical application. Though such limitations require extensive research, the concept of expanding bacteriocins from food preservation to human health opens many fascinating doors, including novel drug delivery systems and anticancer treatment applications.
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Affiliation(s)
- Elaine Meade
- Department of Life Science, Sligo Institute of Technology, F91 YW50 Sligo, Ireland;
| | - Mark Anthony Slattery
- Mark Anthony Slattery MVB, Veterinary Practice, Manorhamilton, F91 DP62 Leitrim, Ireland;
| | - Mary Garvey
- Department of Life Science, Sligo Institute of Technology, F91 YW50 Sligo, Ireland;
- Mark Anthony Slattery MVB, Veterinary Practice, Manorhamilton, F91 DP62 Leitrim, Ireland;
- Correspondence: ; Tel.: +353-071-9305529
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