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Simonetti O, Rizzetto G, Cirioni O, Molinelli E, Morroni G, Giacometti A, Offidani A. New insight into old and new antimicrobial molecules targeting quorum sensing for MRSA wound infection. Future Microbiol 2022; 17:177-183. [PMID: 35040689 DOI: 10.2217/fmb-2021-0120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
MRSA represents one of the largest problems in wound healing as a result of its increasing incidence and the complex therapeutic approach required to treat it. The need for new solutions to overcome antibiotic resistance led to the development of antimicrobial molecules that are effective at blocking quorum sensing. This special report provides an up-to-date review, based on the latest evidence in the literature, of old and new molecules that can positively influence the process of wound healing via their action on MRSA quorum sensing. Quorum sensing-inhibiting molecules, applied topically or injected in situ, have excellent potential to improve both MRSA eradication and quality of wound healing, especially when combined with conventional systemic MRSA therapy. Further human studies are needed to evaluate the efficacy of these molecules.
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Affiliation(s)
- Oriana Simonetti
- Clinic of Dermatology, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Ancona, 60121, Italy
| | - Giulio Rizzetto
- Clinic of Dermatology, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Ancona, 60121, Italy
| | - Oscar Cirioni
- Clinic of Infectious Diseases, Department of Biomedical Sciences and Public Health, Polytechnic University of Marche, Ancona, 60121, Italy
| | - Elisa Molinelli
- Clinic of Dermatology, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Ancona, 60121, Italy
| | - Gianluca Morroni
- Microbiology, Department of Biomedical Sciences and Public Health, Polytechnic University of Marche, Ancona, 60121, Italy
| | - Andrea Giacometti
- Clinic of Infectious Diseases, Department of Biomedical Sciences and Public Health, Polytechnic University of Marche, Ancona, 60121, Italy
| | - Annamaria Offidani
- Clinic of Dermatology, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Ancona, 60121, Italy
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Simonetti O, Rizzetto G, Radi G, Molinelli E, Cirioni O, Giacometti A, Offidani A. New Perspectives on Old and New Therapies of Staphylococcal Skin Infections: The Role of Biofilm Targeting in Wound Healing. Antibiotics (Basel) 2021; 10:antibiotics10111377. [PMID: 34827315 PMCID: PMC8615132 DOI: 10.3390/antibiotics10111377] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 11/06/2021] [Accepted: 11/07/2021] [Indexed: 12/31/2022] Open
Abstract
Among the most common complications of both chronic wound and surgical sites are staphylococcal skin infections, which slow down the wound healing process due to various virulence factors, including the ability to produce biofilms. Furthermore, staphylococcal skin infections are often caused by methicillin-resistant Staphylococcus aureus (MRSA) and become a therapeutic challenge. The aim of this narrative review is to collect the latest evidence on old and new anti-staphylococcal therapies, assessing their anti-biofilm properties and their effect on skin wound healing. We considered antibiotics, quorum sensing inhibitors, antimicrobial peptides, topical dressings, and antimicrobial photo-dynamic therapy. According to our review of the literature, targeting of biofilm is an important therapeutic choice in acute and chronic infected skin wounds both to overcome antibiotic resistance and to achieve better wound healing.
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Affiliation(s)
- Oriana Simonetti
- Department of Clinical and Molecular Sciences Clinic of Dermatology, Polytechnic University of Marche, 60020 Ancona, Italy; (G.R.); (G.R.); (E.M.); (A.O.)
- Correspondence: ; Tel.: +39-0-715-963-494
| | - Giulio Rizzetto
- Department of Clinical and Molecular Sciences Clinic of Dermatology, Polytechnic University of Marche, 60020 Ancona, Italy; (G.R.); (G.R.); (E.M.); (A.O.)
| | - Giulia Radi
- Department of Clinical and Molecular Sciences Clinic of Dermatology, Polytechnic University of Marche, 60020 Ancona, Italy; (G.R.); (G.R.); (E.M.); (A.O.)
| | - Elisa Molinelli
- Department of Clinical and Molecular Sciences Clinic of Dermatology, Polytechnic University of Marche, 60020 Ancona, Italy; (G.R.); (G.R.); (E.M.); (A.O.)
| | - Oscar Cirioni
- Department of Biomedical Sciences and Public Health Clinic of Infectious Diseases, Polytechnic University of Marche, 60020 Ancona, Italy; (O.C.); (A.G.)
| | - Andrea Giacometti
- Department of Biomedical Sciences and Public Health Clinic of Infectious Diseases, Polytechnic University of Marche, 60020 Ancona, Italy; (O.C.); (A.G.)
| | - Annamaria Offidani
- Department of Clinical and Molecular Sciences Clinic of Dermatology, Polytechnic University of Marche, 60020 Ancona, Italy; (G.R.); (G.R.); (E.M.); (A.O.)
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Simonetti O, Cirioni O, Cacciatore I, Baldassarre L, Orlando F, Pierpaoli E, Lucarini G, Orsetti E, Provinciali M, Fornasari E, Di Stefano A, Giacometti A, Offidani A. Efficacy of the Quorum Sensing Inhibitor FS10 Alone and in Combination with Tigecycline in an Animal Model of Staphylococcal Infected Wound. PLoS One 2016; 11:e0151956. [PMID: 27253706 PMCID: PMC4890846 DOI: 10.1371/journal.pone.0151956] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 03/06/2016] [Indexed: 11/18/2022] Open
Abstract
In staphylococci, quorum sensing regulates both biofilm formation and toxin production, moreover it has been demonstrated to be inhibited by RNAIII inhibiting peptide (RIP). Aim our study was to evaluate the in vitro activity and its in vivo efficacy of the combined administration of FS10, a novel RIP derivative, and tigecycline in an animal model of methicillin-resistant (MR) and methicillin-sensitive (MS) Staphylococcus aureus wound infection. Using a 1.x2 cm template, one full thickness wound was established through the panniculus carnosus on the back subcutaneous tissue of each animal. Infection was determined by inoculation of 5x107 CFU/ml of bacteria, that produced an abscess within 24 h, after this, treatment was initiated. The study included, for each strain, a control group without infection, a control infected group that did not receive any treatment and a control infected group with drug-free foam dressing, and three infected groups treated, respectively, with: FS10-soaked foam dressing (containing 20 μg FS10), daily intraperitoneal tigecycline (7 mg/Kg), FS10-soaked foam dressing (containing 20 μg FS10) and daily intraperitoneal injections of tigecycline (7 mg/Kg). The main outcome measures were quantitative culture and histological examination of tissue repair. The highest inhibition of infection was achieved in the group that received FS10-soaked and parenteral tigecycline reducing the bacterial load from 107 CFU/ml to about 103 CFU/g for MSSA and to about 104 CFU/g for MRSA. The group treated with FS10-soaked foam dressing associated with parenteral tigecycline showed, histologically, better overall healing with epithelialization and collagen scores significantly higher than those of the other groups in both strains. In conclusion, the combined use of topical FS10 with i.p. tigecycline induced positive interaction in vivo, resulting in an enhanced therapeutic benefit versus staphylococcal infections in murine wound models.
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Affiliation(s)
- Oriana Simonetti
- Clinic of Dermatology, Department of Clinical and Molecular Sciences; Università Politecnica delle Marche – Ospedali Riuniti, Ancona, Italy
- * E-mail:
| | - Oscar Cirioni
- Clinic of Infectious Diseases, Italy, Department of Biomedical Sciences and Public Health; Università Politecnica delle Marche – Ospedali Riuniti, Ancona, Italy
| | - Ivana Cacciatore
- Department of Pharmacy, Università degli Studi G. D’Annunzio, Chieti-Pescara, Italy
| | - Leonardo Baldassarre
- Department of Pharmacy, Università degli Studi G. D’Annunzio, Chieti-Pescara, Italy
| | - Fiorenza Orlando
- Experimental Animal Models for Aging Units, Research Department, I.N.R.C.A. I.R.R.C.S., Ancona, Italy
| | - Elisa Pierpaoli
- Experimental Animal Models for Aging Units, Research Department, I.N.R.C.A. I.R.R.C.S., Ancona, Italy
| | - Guendalina Lucarini
- Clinic of Dermatology, Department of Clinical and Molecular Sciences; Università Politecnica delle Marche, Ancona, Italy
| | - Elena Orsetti
- Clinic of Infectious Diseases, Italy, Department of Biomedical Sciences and Public Health; Università Politecnica delle Marche – Ospedali Riuniti, Ancona, Italy
| | - Mauro Provinciali
- Experimental Animal Models for Aging Units, Research Department, I.N.R.C.A. I.R.R.C.S., Ancona, Italy
| | - Erika Fornasari
- Department of Pharmacy, Università degli Studi G. D’Annunzio, Chieti-Pescara, Italy
| | - Antonio Di Stefano
- Department of Pharmacy, Università degli Studi G. D’Annunzio, Chieti-Pescara, Italy
| | - Andrea Giacometti
- Clinic of Infectious Diseases, Italy, Department of Biomedical Sciences and Public Health; Università Politecnica delle Marche – Ospedali Riuniti, Ancona, Italy
| | - Annamaria Offidani
- Clinic of Dermatology, Department of Clinical and Molecular Sciences; Università Politecnica delle Marche – Ospedali Riuniti, Ancona, Italy
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Appleby PA, Shabir S, Southgate J, Walker D. Sources of variability in cytosolic calcium transients triggered by stimulation of homogeneous uro-epithelial cell monolayers. J R Soc Interface 2015; 12:rsif.2014.1403. [PMID: 25694543 PMCID: PMC4387530 DOI: 10.1098/rsif.2014.1403] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Epithelial tissue structure is the emergent outcome of the interactions between large numbers of individual cells. Experimental cell biology offers an important tool to unravel these complex interactions, but current methods of analysis tend to be limited to mean field approaches or representation by selected subsets of cells. This may result in bias towards cells that respond in a particular way and/or neglect local, context-specific cell responses. Here, an automated algorithm was applied to examine in detail the individual calcium transients evoked in genetically homogeneous, but asynchronous populations of cultured non-immortalized normal human urothelial cells when subjected to either the global application of an external agonist or a localized scratch wound. The recorded calcium transients were classified automatically according to a set of defined metrics and distinct sub-populations of cells that responded in qualitatively different ways were observed. The nature of this variability in the homogeneous cell population was apportioned to two sources: intrinsic variation in individual cell responses and extrinsic variability due to context-specific factors of the environment, such as spatial heterogeneity. Statistically significant variation in the features of the calcium transients evoked by scratch wounding according to proximity to the wound edge was identified. The manifestation of distinct sub-populations of cells is considered central to the coordination of population-level response resulting in wound closure.
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Affiliation(s)
- Peter A Appleby
- Department of Computer Science/INSIGNEO Institute for In Silico Medicine, University of Sheffield, Sheffield, UK
| | - Saqib Shabir
- Jack Birch Unit for Molecular Carcinogenesis, Department of Biology, University of York, York, UK
| | - Jennifer Southgate
- Jack Birch Unit for Molecular Carcinogenesis, Department of Biology, University of York, York, UK
| | - Dawn Walker
- Department of Computer Science/INSIGNEO Institute for In Silico Medicine, University of Sheffield, Sheffield, UK
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Wu G, Wang X, Deng G, Wu L, Ju S, Teng G, Yao Y, Wang X, Liu N. Novel peptide targeting integrin αvβ3-rich tumor cells by magnetic resonance imaging. J Magn Reson Imaging 2012; 34:395-402. [PMID: 21780231 DOI: 10.1002/jmri.22620] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
PURPOSE To investigate the targeting activity of the peptide (named P1c) derived from connective tissue growth factor (CTGF) to αvβ3-rich tumor cells. MATERIALS AND METHODS P1c was synthesized and conjugated with ultrasuperparamagnetic iron oxide particles (USPIOs) coated with meso-2,3-dimercaptosuccinic acid (DMSA). The specific binding activity of P1c-USPIOs to αvβ3 was verified by solid phase binding assay. The combination of P1c-USPIOs with a human primary liver cancer cell (Bel 7402) with αvβ3-positive expression and uptake of P1c-USPIOs by cells was investigated by Prussian blue staining, transmission electron microscopy (TEM), and magnetic resonance imaging (MRI). The targeting activity of the probe in vivo was also evaluated using a small-animal tumor model by MRI. RESULTS The cell uptake of P1c-USPIOs was observed in a dose-dependent manner, whereas no significant particle uptake was found in the plain USPIOs group. The differences on T2*-weighted imaging were also found by MRI and the signal intensity (SI) was statistically reduced after coculture of Bel 7402 cells with P1c-USPIOs at a concentration of 20-80 μg/mL compared with plain USPIOs (P < 0.05). The in vivo study showed that the signal reduction was distributed mainly in the periphery and some central areas of the tumor. The tumor-to-muscle CNR (contrast-to-noise ratio) at 12 hours after the administration of the P1c-USPIOs was statistically significantly different compared to those at 0 hour, 1 hour, or the plain USPIO group (P < 0.05). CONCLUSION The peptide P1c might be a good candidate as a targeting carrier for drugs or tracers.
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Affiliation(s)
- Guoqiu Wu
- Center of Clinical Laboratory Medicine of Zhongda Hospital, Institute of Biotechnology and Clinical Pharmacy, Southeast University, Nanjing, China.
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Wu G, Wang S, Wang X, Li X, Deng X, Shen Z, Xi T. Determination of a new antibacterial peptide S-thanatin in rat plasma by an indirected-ELISA. Peptides 2011; 32:1484-7. [PMID: 21605610 DOI: 10.1016/j.peptides.2011.05.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Revised: 05/06/2011] [Accepted: 05/06/2011] [Indexed: 11/21/2022]
Abstract
In this study, antimicrobial peptide S-thanatin (Ts) was chemically synthesized and linked to keyhole limpet hemocyanin (KLH) and bovine serum albumin (BSA) by carbodiimide reagent. Rabbits were immunized with Ts-KLH and polyclonal antibody against Ts was purified by fractional precipitation of ammonium sulfate, coupled with anion-exchange chromatography. The purified antibody specifically binding to Ts residues but not BSA molecules was observed by Western-Blot analysis. Ts-BSA was selected as immobilized antigen and reacted with the residual antibody after the excess of anti-Ts antibody was combined with Ts in the sample. The binding antibody was recognized by HRP-conjugated secondary antibody. Finally, the horseradish peroxidase in the complex could catalyze the TMB substrate, resulting in color development. The method was evaluated by analysis of linearity, precision and accuracy and successfully applied in determination of Ts in rat plasma. The data of the pharmacokinetic parameters were also obtained. The proposed ELISA has a great value in routine analysis of Ts for its therapeutic monitoring and pharmacokinetic studies.
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Affiliation(s)
- Guoqiu Wu
- Center of Clinical Laboratory Medicine of Zhongda Hospital, Southeast University, Dingjiaqiao 87#, Nanjing 210009, PR China.
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