1
|
Twomey E, O’Connor PM, Coffey A, Kiste M, Guinane CM, Hill C, Field D, Begley M. Inhibition of Clinical MRSA Isolates by Coagulase Negative Staphylococci of Human Origin. Antibiotics (Basel) 2024; 13:338. [PMID: 38667016 PMCID: PMC11047365 DOI: 10.3390/antibiotics13040338] [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: 03/05/2024] [Revised: 03/29/2024] [Accepted: 03/30/2024] [Indexed: 04/29/2024] Open
Abstract
Staphylococcus aureus is frequently highlighted as a priority for novel drug research due to its pathogenicity and ability to develop antibiotic resistance. Coagulase-negative staphylococci (CoNS) are resident flora of the skin and nares. Previous studies have confirmed their ability to kill and prevent colonization by S. aureus through the production of bioactive substances. This study screened a bank of 37 CoNS for their ability to inhibit the growth of methicillin-resistant S. aureus (MRSA). Deferred antagonism assays, growth curves, and antibiofilm testing performed with the cell-free supernatant derived from overnight CoNS cultures indicated antimicrobial and antibiofilm effects against MRSA indicators. Whole genome sequencing and BAGEL4 analysis of 11 CoNS isolates shortlisted for the inhibitory effects they displayed against MRSA led to the identification of two strains possessing complete putative bacteriocin operons. The operons were predicted to encode a nukacin variant and a novel epilancin variant. From this point, strains Staphylococcus hominis C14 and Staphylococcus epidermidis C33 became the focus of the investigation. Through HPLC, a peptide identical to previously characterized nukacin KQU-131 and a novel epilancin variant were isolated from cultures of C14 and C33, respectively. Mass spectrometry confirmed the presence of each peptide in the active fractions. Spot-on-lawn assays demonstrated both bacteriocins could inhibit the growth of an MRSA indicator. The identification of natural products with clinically relevant activity is important in today's climate of escalating antimicrobial resistance and a depleting antibiotic pipeline. These findings also highlight the prospective role CoNS may play as a source of bioactive substances with activity against critical pathogens.
Collapse
Affiliation(s)
- Ellen Twomey
- Department of Biological Sciences, Munster Technological University, T12 P928 Cork, Ireland; (E.T.); (A.C.); (C.M.G.)
- APC Microbiome Ireland, University College Cork, T12 YN60 Cork, Ireland;
| | | | - Aidan Coffey
- Department of Biological Sciences, Munster Technological University, T12 P928 Cork, Ireland; (E.T.); (A.C.); (C.M.G.)
- APC Microbiome Ireland, University College Cork, T12 YN60 Cork, Ireland;
| | - Maija Kiste
- Department of Biological Sciences, Munster Technological University, T12 P928 Cork, Ireland; (E.T.); (A.C.); (C.M.G.)
| | - Caitriona M. Guinane
- Department of Biological Sciences, Munster Technological University, T12 P928 Cork, Ireland; (E.T.); (A.C.); (C.M.G.)
| | - Colin Hill
- APC Microbiome Ireland, University College Cork, T12 YN60 Cork, Ireland;
- School of Microbiology, University College Cork, T12 YN60 Cork, Ireland
| | - Des Field
- APC Microbiome Ireland, University College Cork, T12 YN60 Cork, Ireland;
- School of Microbiology, University College Cork, T12 YN60 Cork, Ireland
| | - Máire Begley
- Department of Biological Sciences, Munster Technological University, T12 P928 Cork, Ireland; (E.T.); (A.C.); (C.M.G.)
| |
Collapse
|
2
|
Gori A, Lodigiani G, Colombarolli SG, Bergamaschi G, Vitali A. Cell Penetrating Peptides: Classification, Mechanisms, Methods of Study, and Applications. ChemMedChem 2023; 18:e202300236. [PMID: 37389978 DOI: 10.1002/cmdc.202300236] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/28/2023] [Accepted: 06/28/2023] [Indexed: 07/02/2023]
Abstract
Cell-penetrating peptides (CPPs) encompass a class of peptides that possess the remarkable ability to cross cell membranes and deliver various types of cargoes, including drugs, nucleic acids, and proteins, into cells. For this reason, CPPs are largely investigated in drug delivery applications in the context of many diseases, such as cancer, diabetes, and genetic disorders. While sharing this functionality and some common structural features, such as a high content of positively charged amino acids, CPPs represent an extremely diverse group of elements, which can differentiate under many aspects. In this review, we summarize the most common characteristics of CPPs, introduce their main distinctive features, mechanistic aspects that drive their function, and outline the most widely used techniques for their structural and functional studies. We highlight current gaps and future perspectives in this field, which have the potential to significantly impact the future field of drug delivery and therapeutics.
Collapse
Affiliation(s)
- Alessandro Gori
- SCITEC - Istituto di Scienze e Tecnologie Chimiche "Giulio Natta", National Research Council of Italy, Via Mario Bianco 9, 20131, Milano, Italy
| | - Giulia Lodigiani
- SCITEC - Istituto di Scienze e Tecnologie Chimiche "Giulio Natta", National Research Council of Italy, Via Mario Bianco 9, 20131, Milano, Italy
| | - Stella G Colombarolli
- Istituto di Scienze e Tecnologie Chimiche "Giulio Natta", National Research Council of Italy, L.go F. Vito 1, 00168, Roma, Italy
| | - Greta Bergamaschi
- SCITEC - Istituto di Scienze e Tecnologie Chimiche "Giulio Natta", National Research Council of Italy, Via Mario Bianco 9, 20131, Milano, Italy
| | - Alberto Vitali
- Istituto di Scienze e Tecnologie Chimiche "Giulio Natta", National Research Council of Italy, L.go F. Vito 1, 00168, Roma, Italy
| |
Collapse
|
3
|
Wang B, Wei PW, Yao Y, Song CR, Wang X, Yang YX, Long YH, Yang SW, Hu Y, Gai ZC, Wu JW, Liu HM. Functional and expression characteristics identification of Phormicins, novel AMPs from Musca domestica with anti-MRSA biofilm activity, in response to different stimuli. Int J Biol Macromol 2022; 209:299-314. [PMID: 35381282 DOI: 10.1016/j.ijbiomac.2022.03.204] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/28/2022] [Accepted: 03/29/2022] [Indexed: 12/26/2022]
Abstract
Antibiotic-resistant bacteria (including MRSA) in the clinic pose a growing threat to public health, and antimicrobial peptides (AMPs) have great potential as efficient treatment alternatives. Houseflies have evolved over long periods in complex, dirty environments, developing a special immune system to overcome challenges in harmful environments. AMPs are key innate immune molecules. Herein, two differentially expressed AMPs, Phormicins A and B, were identified by screening transcriptomic changes in response to microbial stimulation. Structural mimic assays indicated that these AMPs exhibited functional divergence due to their C-terminal features. Expression analysis showed that they had different expression patterns. Phormicin B had higher constitutive expression than Phormicin A. However, Phormicin B was sharply downregulated, whereas Phormicin A was highly upregulated, after microbial stimulation. The MIC, MBC and time-growth curves showed the antibacterial spectrum of these peptides. Crystal violet staining and SEM showed that Phormicin D inhibited MRSA biofilm formation. TEM suggested that Phormicin D disrupted the MRSA cell membrane. Furthermore, Phormicin D inhibited biofilm formation by downregulating the expression of biofilm-related genes, including altE and embp. Therefore, housefly Phormicins were functionally characterized as having differential expression patterns and antibacterial & antibiofilm activities. This study provides a new potential peptide for clinical MRSA therapy.
Collapse
Affiliation(s)
- Bing Wang
- Engineering Research Center of Medical Biotechnology, Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Immune Cells and Antibody Engineering Research Center of Guizhou Province, Guizhou Medical University, Guiyang 550025, Guizhou, China; School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, Guizhou, China; Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, Guizhou Medical University, Guiyang 550025, Guizhou, China; Key Laboratory of Environmental Pollution Monitoring and Disease Control, China Ministry of Education (Guizhou Medical University), Guiyang 550025, Guizhou, China.
| | - Peng-Wei Wei
- Engineering Research Center of Medical Biotechnology, Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Immune Cells and Antibody Engineering Research Center of Guizhou Province, Guizhou Medical University, Guiyang 550025, Guizhou, China
| | - Yang Yao
- Engineering Research Center of Medical Biotechnology, Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Immune Cells and Antibody Engineering Research Center of Guizhou Province, Guizhou Medical University, Guiyang 550025, Guizhou, China
| | - Chao-Rong Song
- Engineering Research Center of Medical Biotechnology, Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Immune Cells and Antibody Engineering Research Center of Guizhou Province, Guizhou Medical University, Guiyang 550025, Guizhou, China; School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, Guizhou, China
| | - Xu Wang
- Engineering Research Center of Medical Biotechnology, Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Immune Cells and Antibody Engineering Research Center of Guizhou Province, Guizhou Medical University, Guiyang 550025, Guizhou, China; School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, Guizhou, China
| | - Yong-Xin Yang
- Engineering Research Center of Medical Biotechnology, Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Immune Cells and Antibody Engineering Research Center of Guizhou Province, Guizhou Medical University, Guiyang 550025, Guizhou, China; School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, Guizhou, China
| | - Yao-Hang Long
- Engineering Research Center of Medical Biotechnology, Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Immune Cells and Antibody Engineering Research Center of Guizhou Province, Guizhou Medical University, Guiyang 550025, Guizhou, China; School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, Guizhou, China
| | - Su-Wen Yang
- Engineering Research Center of Medical Biotechnology, Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Immune Cells and Antibody Engineering Research Center of Guizhou Province, Guizhou Medical University, Guiyang 550025, Guizhou, China
| | - Yong Hu
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, China Ministry of Education (Guizhou Medical University), Guiyang 550025, Guizhou, China
| | - Zhong-Chao Gai
- Shaanxi University of Science and Technology, Xiaan, Shaanxi 710021, China.
| | - Jian-Wei Wu
- School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, Guizhou, China.
| | - Hong-Mei Liu
- Engineering Research Center of Medical Biotechnology, Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Immune Cells and Antibody Engineering Research Center of Guizhou Province, Guizhou Medical University, Guiyang 550025, Guizhou, China; School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, Guizhou, China; School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, Guizhou, China.
| |
Collapse
|