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Costa B, Alves PM, Fonseca DR, Campos F, Monteiro AC, Shahrour H, Gomes A, Costa F, Gomes P, Martínez-de-Tejada G, Monteiro C, Martins MCL. Dhvar5-chitosan nanogels and their potential to improve antibiotics activity. Int J Biol Macromol 2024; 277:134059. [PMID: 39038581 DOI: 10.1016/j.ijbiomac.2024.134059] [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: 01/22/2024] [Revised: 06/28/2024] [Accepted: 07/19/2024] [Indexed: 07/24/2024]
Abstract
Infection is one of the main causes of orthopedic implants failure, with antibiotic-resistant bacteria playing a crucial role in this outcome. In this work, antimicrobial nanogels were developed to be applied in situ as implant coating to prevent orthopedic-device-related infections. To that regard, a broad-spectrum antimicrobial peptide, Dhvar5, was grafted onto chitosan via thiol-norbornene "photoclick" chemistry. Dhvar5-chitosan nanogels (Dhvar5-NG) were then produced using a microfluidic system. Dhvar5-NG (1010 nanogels (NG)/mL) with a Dhvar5 concentration of 6 μg/mL reduced the burden of the most critical bacteria in orthopedic infections - methicillin-resistant Staphylococcus aureus (MRSA) - after 24 h in medium supplemented with human plasma proteins. Transmission electron microscopy showed that Dhvar5-NG killed bacteria by membrane disruption and cytoplasm release. No signs of cytotoxicity against a pre-osteoblast cell line were verified upon incubation with Dhvar5-NG. To further explore therapeutic alternatives, the potential synergistic effect of Dhvar5-NG with antibiotics was evaluated against MRSA. Dhvar5-NG at a sub-minimal inhibitory concentration (109 NG/mL) demonstrated synergistic effect with oxacillin (4-fold reduction: from 2 to 0.5 μg/mL) and piperacillin (2-fold reduction: from 2 to 1 μg/mL). This work supports the use of Dhvar5-NG as adjuvant of antibiotics to the prevention of orthopedic devices-related infections.
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Affiliation(s)
- B Costa
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal; FEUP-Faculdade de Engenharia, Universidade do Porto, Porto, Portugal
| | - P M Alves
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal; FEUP-Faculdade de Engenharia, Universidade do Porto, Porto, Portugal
| | - D R Fonseca
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal; FEUP-Faculdade de Engenharia, Universidade do Porto, Porto, Portugal
| | - F Campos
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal; ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - A C Monteiro
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal; ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - H Shahrour
- Department of Microbiology and Parasitology, University of Navarra, Pamplona, Spain; Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
| | - A Gomes
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - F Costa
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | - P Gomes
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - G Martínez-de-Tejada
- Department of Microbiology and Parasitology, University of Navarra, Pamplona, Spain; Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
| | - C Monteiro
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | - M C L Martins
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal; ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal.
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2
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Malhotra K, Buznyk O, Islam MM, Edin E, Basu S, Groleau M, Dégué DS, Fagerholm P, Fois A, Lesage S, Jangamreddy JR, Šimoliūnas E, Liszka A, Patra HK, Griffith M. Phosphorylcholine and KR12-Containing Corneal Implants in HSV-1-Infected Rabbit Corneas. Pharmaceutics 2023; 15:1658. [PMID: 37376106 DOI: 10.3390/pharmaceutics15061658] [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: 04/12/2023] [Revised: 05/29/2023] [Accepted: 05/29/2023] [Indexed: 06/29/2023] Open
Abstract
Severe HSV-1 infection can cause blindness due to tissue damage from severe inflammation. Due to the high risk of graft failure in HSV-1-infected individuals, cornea transplantation to restore vision is often contraindicated. We tested the capacity for cell-free biosynthetic implants made from recombinant human collagen type III and 2-methacryloyloxyethyl phosphorylcholine (RHCIII-MPC) to suppress inflammation and promote tissue regeneration in the damaged corneas. To block viral reactivation, we incorporated silica dioxide nanoparticles releasing KR12, the small bioactive core fragment of LL37, an innate cationic host defense peptide produced by corneal cells. KR12 is more reactive and smaller than LL37, so more KR12 molecules can be incorporated into nanoparticles for delivery. Unlike LL37, which was cytotoxic, KR12 was cell-friendly and showed little cytotoxicity at doses that blocked HSV-1 activity in vitro, instead enabling rapid wound closure in cultures of human epithelial cells. Composite implants released KR12 for up to 3 weeks in vitro. The implant was also tested in vivo on HSV-1-infected rabbit corneas where it was grafted by anterior lamellar keratoplasty. Adding KR12 to RHCIII-MPC did not reduce HSV-1 viral loads or the inflammation resulting in neovascularization. Nevertheless, the composite implants reduced viral spread sufficiently to allow stable corneal epithelium, stroma, and nerve regeneration over a 6-month observation period.
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Affiliation(s)
- Kamal Malhotra
- Department of Ophthalmology, Université de Montréal, Montreal, QC H3C 3J7, Canada
- Maisonneuve-Rosemont Hospital Research Centre, Montreal, QC H1T 2M4, Canada
| | - Oleksiy Buznyk
- Department of Clinical and Experimental Medicine, Linköping University, 58183 Linköping, Sweden
- Filatov Institute of Eye Diseases and Tissue Therapy of the NAMS of Ukraine, 65061 Odessa, Ukraine
| | - Mohammad Mirazul Islam
- Department of Clinical and Experimental Medicine, Linköping University, 58183 Linköping, Sweden
| | - Elle Edin
- Department of Ophthalmology, Université de Montréal, Montreal, QC H3C 3J7, Canada
- Maisonneuve-Rosemont Hospital Research Centre, Montreal, QC H1T 2M4, Canada
- Department of Clinical and Experimental Medicine, Linköping University, 58183 Linköping, Sweden
- Institute of Biomedical Engineering, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Sankar Basu
- Department of Microbiology, Asutosh College, Affiliated with University of Calcutta, Kolkata 700026, India
| | - Marc Groleau
- Department of Ophthalmology, Université de Montréal, Montreal, QC H3C 3J7, Canada
- Maisonneuve-Rosemont Hospital Research Centre, Montreal, QC H1T 2M4, Canada
- Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Delali Shana Dégué
- Department of Ophthalmology, Université de Montréal, Montreal, QC H3C 3J7, Canada
- Maisonneuve-Rosemont Hospital Research Centre, Montreal, QC H1T 2M4, Canada
- Institute of Biomedical Engineering, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Per Fagerholm
- Department of Clinical and Experimental Medicine, Linköping University, 58183 Linköping, Sweden
| | - Adrien Fois
- Maisonneuve-Rosemont Hospital Research Centre, Montreal, QC H1T 2M4, Canada
- Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | - Sylvie Lesage
- Maisonneuve-Rosemont Hospital Research Centre, Montreal, QC H1T 2M4, Canada
- Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montreal, QC H3T 1J4, Canada
| | | | - Egidijus Šimoliūnas
- Department of Biological Models, Institute of Biochemistry, Life Sciences Center, Vilnius University, 01513 Vilnius, Lithuania
| | - Aneta Liszka
- Department of Clinical and Experimental Medicine, Linköping University, 58183 Linköping, Sweden
| | - Hirak K Patra
- Department of Clinical and Experimental Medicine, Linköping University, 58183 Linköping, Sweden
- Department of Surgical Biotechnology, UCL Division of Surgery and Interventional Science, University College London, London WC1E 6BT, UK
| | - May Griffith
- Department of Ophthalmology, Université de Montréal, Montreal, QC H3C 3J7, Canada
- Maisonneuve-Rosemont Hospital Research Centre, Montreal, QC H1T 2M4, Canada
- Department of Clinical and Experimental Medicine, Linköping University, 58183 Linköping, Sweden
- Institute of Biomedical Engineering, Université de Montréal, Montreal, QC H3T 1J4, Canada
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3
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Wang G, Cui Y, Liu H, Tian Y, Li S, Fan Y, Sun S, Wu D, Peng C. Antibacterial peptides-loaded bioactive materials for the treatment of bone infection. Colloids Surf B Biointerfaces 2023; 225:113255. [PMID: 36924650 DOI: 10.1016/j.colsurfb.2023.113255] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 02/20/2023] [Accepted: 03/06/2023] [Indexed: 03/13/2023]
Abstract
Bacterial bone infection in open fractures is an urgent problem to solve in orthopedics. Antimicrobial peptides (AMPs), as a part of innate immune defense, have good biocompatibility. Their antibacterial mechanism and therapeutic application against bacteria have been widely studied. Compared with traditional antibiotics, AMPs do not easily cause bacterial resistance and can be a reliable substitute for antibiotics in the future. Therefore, various physical and chemical strategies have been developed for the combined application of AMPs and bioactive materials to infected sites, which are conducive to maintaining the local stability of AMPs, reducing many complications, and facilitating bone infection resolution. This review explored the molecular structure, function, and direct and indirect antibacterial mechanisms of AMPs, introduced two important AMPs (LL-37 and β-defensins) in bone tissues, and reviewed advanced AMP loading strategies and different bioactive materials. Finally, the latest progress and future development of AMPs-loaded bioactive materials for the promotion of bone infection repair were discussed. This study provided a theoretical basis and application strategy for the treatment of bone infection with AMP-loaded bioactive materials.
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Affiliation(s)
- Gan Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, PR China
| | - Yutao Cui
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, PR China
| | - He Liu
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, PR China
| | - Yuhang Tian
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, PR China
| | - Shaorong Li
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, PR China
| | - Yi Fan
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, PR China
| | - Shouye Sun
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, PR China
| | - Dankai Wu
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, PR China.
| | - Chuangang Peng
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, PR China.
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The Potential of Surface-Immobilized Antimicrobial Peptides for the Enhancement of Orthopaedic Medical Devices: A Review. Antibiotics (Basel) 2023; 12:antibiotics12020211. [PMID: 36830122 PMCID: PMC9952162 DOI: 10.3390/antibiotics12020211] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/16/2023] [Accepted: 01/17/2023] [Indexed: 01/21/2023] Open
Abstract
Due to the well-known phenomenon of antibiotic resistance, there is a constant need for antibiotics with novel mechanisms and different targets respect to those currently in use. In this regard, the antimicrobial peptides (AMPs) seem very promising by virtue of their bactericidal action, based on membrane permeabilization of susceptible microbes. Thanks to this feature, AMPs have a broad activity spectrum, including antibiotic-resistant strains, and microbial biofilms. Additionally, several AMPs display properties that can help tissue regeneration. A possible interesting field of application for AMPs is the development of antimicrobial coatings for implantable medical devices (e.g., orthopaedic prostheses) to prevent device-related infection. In this review, we will take note of the state of the art of AMP-based coatings for orthopaedic prostheses. We will review the most recent studies by focusing on covalently linked AMPs to titanium, their antimicrobial efficacy and plausible mode of action, and cytocompatibility. We will try to extrapolate some general rules for structure-activity (orientation, density) relationships, in order to identify the most suitable physical and chemical features of peptide candidates, and to optimize the coupling strategies to obtain antimicrobial surfaces with improved biological performance.
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Ma L, Zong J, Xun X, Hu X, Chen Z, Zhang Q, Peng M, Song B, Ao H. Fabrication of gentamicin loaded Col-I/HA multilayers modified titanium coatings for prevention of implant infection. Front Chem 2022; 10:1019332. [DOI: 10.3389/fchem.2022.1019332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 11/10/2022] [Indexed: 11/23/2022] Open
Abstract
In this study, gentamicin loaded collagen I/hyaluronic acid multilayers modified titanium coating (TC-AA(C/H)6-G) was fabricated via a layer-by-layer (LBL) covalent immobilization method. The drug releasing properties of collagen I/Hyaluronic acid (Col-I/HA) multilayers and the effect of loaded gentamicin on the antibacterial properties and cytocompatibility of modified TC were investigated. The gentamicin release assay indicated that the Col-I/HA multilayers modified TC exhibited agreeable drug-loading amount (537.22 ± 29.66 µg of gentamicin) and controlled-release performance (240 h of sustained release time). TC-AA(C/H)6-G revealed satisfactory antibacterial activity and inhibited the colonization and biofilm formation of S. aureus. Fortunately, the functions of hMSCs on TC-AA(C/H)6-G did not affected by the loaded gentamicin, and TC-AA(C/H)6-G could improve the adhesion, proliferation and osteogenic differentiation of cells, as well as TC-AA(C/H)6. In vivo animal study indicated that TC-AA(C/H)6-G could effectively control intramedullary cavity infection caused by S. aureus and prevent bone destruction.
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De novo strategy with engineering a multifunctional bacterial cellulose-based dressing for rapid healing of infected wounds. Bioact Mater 2022; 13:212-222. [PMID: 35224303 PMCID: PMC8844193 DOI: 10.1016/j.bioactmat.2021.10.043] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 10/26/2021] [Accepted: 10/28/2021] [Indexed: 11/27/2022] Open
Abstract
The treatment and healing of infected skin lesions is one of the major challenges in surgery. To solve this problem, collagen I (Col-I) and the antibacterial agent hydroxypropyltrimethyl ammonium chloride chitosan (HACC) were composited into the bacterial cellulose (BC) three-dimensional network structure by a novel membrane–liquid interface (MLI) culture, and a Col-I/HACC/BC (CHBC) multifunctional dressing was designed. The water absorption rate and water vapor transmission rate of the obtained CHBC dressing were 35.78 ± 2.45 g/g and 3084 ± 56 g m−2·day−1, respectively. The water retention of the CHBC dressing was significantly improved compared with the BC caused by the introduced Col-I and HACC. In vitro results indicated that the combined advantages of HACC and Col-I confer on CHBC dressings not only have outstanding antibacterial properties against Staphylococcus aureus (S. aureus) compared with BC and CBC, but also exhibit better cytocompatibility than BC and HBC to promote the proliferation and spread of NIH3T3 cells and HUVECs. Most importantly, the results of in vivo animal tests demonstrated that the CHBC dressings fully promoted wound healing for 8 days and exhibited shorter healing times, especially in the case of wound infection. Excellent skin regeneration effects and higher expression levels of collagen during infection were also shown in the CHBC group. We believe that CHBC composites with favorable multifunctionality have potential applications as wound dressings to treat infected wounds. The antibacterial agent HACC and collagen I were introduced into BC structure by a novel membrane–liquid interface culture. CHBC dressing has favorable thermostability, water absorption, water retention rate and WVTRs. CHBC dressing has outstanding antibacterial properties against S. aureus. CHBC dressing promoted the proliferation and spread of NIH3T3 cells and HUVECs. CHBC dressing prevented wound infection caused by S. aureus and accelerated wound healing.
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7
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Rai A, Ferrão R, Palma P, Patricio T, Parreira P, Anes E, Tonda-Turo C, Martins C, Alves N, Ferreira L. Antimicrobial peptide-based materials: opportunities and challenges. J Mater Chem B 2022; 10:2384-2429. [DOI: 10.1039/d1tb02617h] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The multifunctional properties of antimicrobial peptides (AMPs) make them attractive candidates for the treatment of various diseases. AMPs are considered alternatives to antibiotics due to the rising number of multidrug-resistant...
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Costa B, Martínez-de-Tejada G, Gomes PAC, L. Martins MC, Costa F. Antimicrobial Peptides in the Battle against Orthopedic Implant-Related Infections: A Review. Pharmaceutics 2021; 13:1918. [PMID: 34834333 PMCID: PMC8625235 DOI: 10.3390/pharmaceutics13111918] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/04/2021] [Accepted: 11/05/2021] [Indexed: 02/06/2023] Open
Abstract
Prevention of orthopedic implant-related infections is a major medical challenge, particularly due to the involvement of biofilm-encased and multidrug-resistant bacteria. Current therapies, based on antibiotic administration, have proven to be insufficient, and infection prevalence may rise due to the dissemination of antibiotic resistance. Antimicrobial peptides (AMPs) have attracted attention as promising substitutes of conventional antibiotics, owing to their broad-spectrum of activity, high efficacy at very low concentrations, and, importantly, low propensity for inducing resistance. The aim of this review is to offer an updated perspective of the development of AMPs-based preventive strategies for orthopedic and dental implant-related infections. In this regard, two major research strategies are herein addressed, namely (i) AMP-releasing systems from titanium-modified surfaces and from bone cements or beads; and (ii) AMP immobilization strategies used to graft AMPs onto titanium or other model surfaces with potential translation as coatings. In overview, releasing strategies have evolved to guarantee higher loadings, prolonged and targeted delivery periods upon infection. In addition, avant-garde self-assembling strategies or polymer brushes allowed higher immobilized peptide surface densities, overcoming bioavailability issues. Future research efforts should focus on the regulatory demands for pre-clinical and clinical validation towards clinical translation.
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Affiliation(s)
- Bruna Costa
- i3S–Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal; (B.C.); (F.C.)
- INEB–Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- FEUP–Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Guillermo Martínez-de-Tejada
- Department of Microbiology and Parasitology, University of Navarra, Irunlarrea, 1, 31008 Pamplona, Spain;
- Navarra Institute for Health Research (IdiSNA), 31008 Pamplona, Spain
| | - Paula A. C. Gomes
- CIQ-UP e Centro de Investigação em Química da Universidade do Porto, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal;
| | - M. Cristina L. Martins
- i3S–Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal; (B.C.); (F.C.)
- INEB–Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- ICBAS–Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge de Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Fabíola Costa
- i3S–Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal; (B.C.); (F.C.)
- INEB–Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
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9
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Physical behavior of KR-12 peptide on solid surfaces and Langmuir-Blodgett lipid films: Complementary approaches to its antimicrobial mode against S. aureus. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2021; 1864:183779. [PMID: 34560046 DOI: 10.1016/j.bbamem.2021.183779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 08/13/2021] [Accepted: 09/13/2021] [Indexed: 11/22/2022]
Abstract
Biophysical characterization of antimicrobial peptides helps to understand the mechanistic aspects of their action. The physical behavior of the KR-12 antimicrobial peptide (e.g. orientation and changes in secondary structure), was analyzed after interactions with a Staphylococcus aureus membrane model and solid surfaces. We performed antimicrobial tests using Gram-positive S. aureus (ATCC 25923) bacteria. Moreover, Langmuir-Blodgett experiments showed that the synthetic peptide can disturb the lipidic membrane at a concentration lower than the Minimum Inhibitory Concentration, thus confirming that KR-12/lipid interactions are involved. Partially- and fully-deactivated KR-12 hybrid samples were obtained by physisorption and covalent immobilization in chitosan/silica and glyoxal-rich solid supports. The correlation of Langmuir-Blodgett data with the α-helix formation, followed by FTIR-ATR in a frozen-like state, and the antimicrobial activity showed the importance of these interactions and conformation changes on the first step action mode of this peptide. This is the first time that material science (immobilization in solid surfaces assisted by FTIR-ATR analysis in frozen-like state) and physical (Langmuir-Blodgett/Schaefer) approaches are combined for exploring mechanistic aspects of the primary action mode of the KR-12 antimicrobial peptide against S. aureus.
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Amin Yavari S, Castenmiller SM, van Strijp JAG, Croes M. Combating Implant Infections: Shifting Focus from Bacteria to Host. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2002962. [PMID: 32914481 DOI: 10.1002/adma.202002962] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/28/2020] [Indexed: 05/06/2023]
Abstract
The widespread use of biomaterials to support or replace body parts is increasingly threatened by the risk of implant-associated infections. In the quest for finding novel anti-infective biomaterials, there generally has been a one-sided focus on biomaterials with direct antibacterial properties, which leads to excessive use of antibacterial agents, compromised host responses, and unpredictable effectiveness in vivo. This review sheds light on how host immunomodulation, rather than only targeting bacteria, can endow biomaterials with improved anti-infective properties. How antibacterial surface treatments are at risk to be undermined by biomaterial features that dysregulate the protection normally provided by critical immune cell subsets, namely, neutrophils and macrophages, is discussed. Accordingly, how the precise modification of biomaterial surface biophysical cues, or the incorporation of immunomodulatory drug delivery systems, can render biomaterials with the necessary immune-compatible and immune-protective properties to potentiate the host defense mechanisms is reviewed. Within this context, the protective role of host defense peptides, metallic particles, quorum sensing inhibitors, and therapeutic adjuvants is discussed. The highlighted immunomodulatory strategies may lay a foundation to develop anti-infective biomaterials, while mitigating the increasing threat of antibacterial drug resistance.
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Affiliation(s)
- Saber Amin Yavari
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, 3508GA, The Netherlands
| | - Suzanne M Castenmiller
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, 3508GA, The Netherlands
| | - Jos A G van Strijp
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, 3508GA, The Netherlands
| | - Michiel Croes
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, 3508GA, The Netherlands
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11
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Meng X, Zhang J, Chen J, Nie B, Yue B, Zhang W, Lyu Z, Long T, Wang Y. KR-12 coating of polyetheretherketone (PEEK) surface via polydopamine improves osteointegration and antibacterial activity in vivo. J Mater Chem B 2020; 8:10190-10204. [DOI: 10.1039/d0tb01899f] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
KR-12 was grafted onto the surface of PEEK, which improved the hydrophilicity of the material surface, promoted cell adhesion, osteogenic differentiation and osseointegration, while also endowing the appreciable antibacterial activity on the material surface.
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Affiliation(s)
- Xiangchao Meng
- Department of Bone and Joint Surgery
- Renji Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai
| | - Jue Zhang
- Department of Bone and Joint Surgery
- Renji Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai
| | - Jun Chen
- Department of Head and Neck Surgery
- Renji Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai
| | - Binen Nie
- Department of Bone and Joint Surgery
- Renji Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai
| | - Bing Yue
- Department of Bone and Joint Surgery
- Renji Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai
| | - Wei Zhang
- Department of Bone and Joint Surgery
- Renji Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai
| | - Zhuocheng Lyu
- Department of Bone and Joint Surgery
- Renji Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai
| | - Teng Long
- Department of Bone and Joint Surgery
- Renji Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai
| | - You Wang
- Department of Bone and Joint Surgery
- Renji Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai
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Boix-Lemonche G, Guillem-Marti J, D’Este F, Manero JM, Skerlavaj B. Covalent grafting of titanium with a cathelicidin peptide produces an osteoblast compatible surface with antistaphylococcal activity. Colloids Surf B Biointerfaces 2020; 185:110586. [DOI: 10.1016/j.colsurfb.2019.110586] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 10/04/2019] [Accepted: 10/14/2019] [Indexed: 12/26/2022]
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13
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Qin S, Xu K, Nie B, Ji F, Zhang H. Approaches based on passive and active antibacterial coating on titanium to achieve antibacterial activity. J Biomed Mater Res A 2019; 106:2531-2539. [PMID: 29603857 DOI: 10.1002/jbm.a.36413] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 03/02/2018] [Accepted: 03/15/2018] [Indexed: 12/26/2022]
Abstract
Titanium (Ti) and its alloys are widely applied as orthopedic implants for hip and knee prosthesis, fixation, and dental implants. However, Ti and its alloys are bioinert and susceptible to bacteria and biofilm formation. Strategies for improving the antibacterial properties of Ti can be divided into two approaches, namely, passive coating and active coating on the Ti surface. Passive coating on Ti mainly kills the bacteria in contact but does not kill plankton or bacteria dwell in the bone tissue around the Ti implant. Active coating mainly involves the release of antibacterial agents to kill the bacteria, but this may result in the development of bacterial resistance. Both strategies include advantages and disadvantages. This article reviews the current and potential future approaches for improving antibacterial activity on Ti. We mainly focus on current approaches for fabricating antibacterial Ti and its limitations and countermeasures, and provide direction for further studies of biofunctionalization of Ti with antibacterial properties. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A:2531-2539, 2018.
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Affiliation(s)
- Sheng Qin
- Department of Orthopedics, Changhai hospital Affiliated to the Navy Military Medical University, Shanghai, People's Republic of China
| | - Kaihang Xu
- Department of Orthopedics, Changhai hospital Affiliated to the Navy Military Medical University, Shanghai, People's Republic of China
| | - Binen Nie
- Department of Bone and Joint Surgery, Renji Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Fang Ji
- Department of Orthopedics, Changhai hospital Affiliated to the Navy Military Medical University, Shanghai, People's Republic of China
| | - Hao Zhang
- Department of Orthopedics, Changhai hospital Affiliated to the Navy Military Medical University, Shanghai, People's Republic of China
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14
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Pinto IB, dos Santos Machado L, Meneguetti BT, Nogueira ML, Espínola Carvalho CM, Roel AR, Franco OL. Utilization of antimicrobial peptides, analogues and mimics in creating antimicrobial surfaces and bio-materials. Biochem Eng J 2019. [DOI: 10.1016/j.bej.2019.107237] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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15
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Aboltins CA, Antoci V, Bhattacharyya S, Cross M, Ducheyne P, Freiberg AA, Hailer N, Kay P, Ketonis C, Klement MR, Köse N, Lee M, Mitchell P, Nandi S, Palacio JC, Perry K, Prieto H, Shahi A, Trebše R, Turner D, Wu CT, Yazdi H. Hip and Knee Section, Prevention, Prosthesis Factors: Proceedings of International Consensus on Orthopedic Infections. J Arthroplasty 2019; 34:S309-S320. [PMID: 30348551 DOI: 10.1016/j.arth.2018.09.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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Design of Antimicrobial Peptides: Progress Made with Human Cathelicidin LL-37. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1117:215-240. [PMID: 30980360 DOI: 10.1007/978-981-13-3588-4_12] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The incorporation of the innate immune system into humans is essential for survival and health due to the rapid replication of invading microbes and the delayed action of the adaptive immune system. Antimicrobial peptides are important components of human innate immunity. Over 100 such peptides have been identified in various human tissues. Human cathelicidin LL-37 is best studied, and there has been a growing interest in designing new peptides based on LL-37. This chapter describes the alternative processing of the human cathelicidin precursor, protease digestion, and lab cutting of LL-37. Both a synthetic peptide library and structure-based design are utilized to identify the active regions. Although challenging, the determination of the 3D structure of LL-37 enabled the identification of the core antimicrobial region. The minimal region of LL-37 can be function-dependent. We discuss the design and potential applications of LL-37 into antibacterial, antibiofilm, antiviral, antifungal, immune modulating, and anticancer peptides. LL-37 has been engineered into 17BIPHE2, a stable, selective, and potent antimicrobial, antibiofilm, and anticancer peptide. Both 17BIPHE2 and SAAP-148 can eliminate the ESKAPE pathogens and show topical in vivo antibiofilm efficacy. Also discussed are other application strategies, including peptide formulation, antimicrobial implants, and peptide-inducing factors such as vitamin D and sunlight. Finally, we summarize what we learned from peptide design based on human LL-37.
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17
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Self-assembling antimicrobial peptides on nanotubular titanium surfaces coated with calcium phosphate for local therapy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:333-343. [PMID: 30423715 DOI: 10.1016/j.msec.2018.09.030] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 08/17/2018] [Accepted: 09/10/2018] [Indexed: 12/31/2022]
Abstract
Bacterial infection is a serious medical problem leading to implant failure. The current antibiotic based therapies rise concerns due to bacterial resistance. The family of antimicrobial peptides (AMP) is one of the promising candidates as local therapy agents due to their broad-spectrum activity. Despite AMPs receive increasing attention to treat infection, their effective delivery to the implantation site has been limited. Here, we developed an engineered dual functional peptide which delivers AMP as a biomolecular therapeutic agent onto calcium phosphate (Ca-P) deposited nanotubular titanium surfaces. Dual functionality of the peptide was achieved by combining a hydroxyapatite binding peptide-1 (HABP1) with an AMP using a flexible linker. HABP functionality of the peptide provided a self-coating property onto the nano-topographies that are designed to improve osteointegration capability, while AMP offered an antimicrobial protection onto the implant surface. We successfully deposited calcium phosphate minerals on nanotubular titanium oxide surface using pulse electrochemical deposition (PECD) and characterized the minerals by XRD, FT-IR, FE-SEM. Antimicrobial activity of the engineered peptide was tested against S. mutans (gram- positive) and E. coli (gram-negative) both in solution and on the Ca-P coated nanotubular titanium surface. In solution activity of AMP and dual functional peptide have the same Minimum Inhibitory Concentration (MIC) (32 mg/mL). The peptide also resulted in the reduction of the number of bacteria both for E.coli and S. mutans compare to control groups on the surface. Antimicrobial features of dual functional peptides are strongly correlated with their structures suggesting tunability in design through linkers regions. The dual-function peptide offers single-step solution for implant surface functionalization that could be applicable to any implant surface having different topographies.
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18
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Macrophage polarization, inflammatory signaling, and NF-κB activation in response to chemically modified titanium surfaces. Colloids Surf B Biointerfaces 2018; 166:269-276. [PMID: 29604569 DOI: 10.1016/j.colsurfb.2018.03.029] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 03/12/2018] [Accepted: 03/20/2018] [Indexed: 11/23/2022]
Abstract
Functionalization of titanium devices with various bioactive molecules enhances many of their properties as implants, including biocompatibility, which is typically assessed by macrophage activation and inflammation. However, functionalization requires prior introduction of reactive groups, to which bioactive agents can then be grafted. Thus, we investigated the inflammatory properties of titanium pretreated with NaOH, titanium pretreated with NaOH and then with 3-aminopropyl triethoxysilane, and titanium pretreated with dopamine. Inflammation, macrophage polarization, and activation of NF-κB signaling were assessed by real-time PCR and western blotting. The data demonstrate that silanized titanium is the least inflammatory, and promotes macrophage M2 polarization with modest engagement of the NF-κB signaling pathway. Importantly, silanization introduces a reactive amino group, providing more opportunities for further functionalization.
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Li H, Zhang S, Nie B, Du Z, Long T, Yue B. The antimicrobial peptide KR-12 promotes the osteogenic differentiation of human bone marrow stem cells by stimulating BMP/SMAD signaling. RSC Adv 2018; 8:15547-15557. [PMID: 35539499 PMCID: PMC9080063 DOI: 10.1039/c8ra00750k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 04/11/2018] [Indexed: 12/28/2022] Open
Abstract
KR-12 is the smallest fragment of human antimicrobial peptide cathelicidin (LL-37), and could play key roles in the treatment of multiple infections, including osteomyelitis. Our preliminary work found that KR-12 enhances the osteogenic differentiation of human bone marrow mesenchymal stem cells (HBMSCs). The present study investigated whether KR-12 affects HBMSC osteogenic differentiation, as well as the molecular mechanisms involved. HBMSC proliferation in the presence of KR-12 was observed with a cell counting 8 assay, and its effects on HBMSC cell cycle progression and apoptosis were examined by flow cytometry. Alkaline phosphatase, Sirius Red, and Alizarin Red staining and quantitative assays were used to study the osteogenic differentiation of HBMSCs. The expression of osteogenic differentiation markers was detected by real-time quantitative PCR analysis. The activation of potentially related pathways was examined by luciferase reporter assay and western blot analysis. KR-12 treatment increased the osteogenic differentiation of HBMSCs without cytotoxicity and did not influence the cell cycle or induce apoptosis. Luciferase reporter assays showed that KR-12 activated the transcription of bone morphogenetic protein 2 (BMP2), a key gene in the BMP/SMAD pathway. Western blot analysis indicated that BMP/SMAD signaling was markedly activated by KR-12 stimulation in osteogenic induction conditions. SMAD phosphorylation was activated by KR-12 treatment, and was inhibited by both a transforming growth factor-β/SMAD inhibitor (LDN-193189 HCL) and BMP2 small interfering RNA (si-BMP2). LDN-193189 HCL and si-BMP2 treatment also abolished the KR-12-induced osteogenic differentiation of HBMSCs. In conclusion, our results suggest that KR-12 promotes HBMSC osteogenesis through the activation of BMP/SMAD signaling. KR-12 is the smallest fragment of human antimicrobial peptide cathelicidin (LL-37), and could play key roles in the treatment of multiple infections, including osteomyelitis.![]()
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Affiliation(s)
- Hui Li
- Department of Bone and Joint Surgery
- Renji Hospital
- Shanghai Jiaotong University School of Medicine
- Shanghai
- China
| | - Shutao Zhang
- Department of Bone and Joint Surgery
- Renji Hospital
- Shanghai Jiaotong University School of Medicine
- Shanghai
- China
| | - Bin'en Nie
- Department of Bone and Joint Surgery
- Renji Hospital
- Shanghai Jiaotong University School of Medicine
- Shanghai
- China
| | - Zhe Du
- Department of Bone and Joint Surgery
- Renji Hospital
- Shanghai Jiaotong University School of Medicine
- Shanghai
- China
| | - Teng Long
- Department of Bone and Joint Surgery
- Renji Hospital
- Shanghai Jiaotong University School of Medicine
- Shanghai
- China
| | - Bing Yue
- Department of Bone and Joint Surgery
- Renji Hospital
- Shanghai Jiaotong University School of Medicine
- Shanghai
- China
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20
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Zhang H, Wang G, Liu P, Tong D, Ding C, Zhang Z, Xie Y, Tang H, Ji F. Vancomycin-loaded titanium coatings with an interconnected micro-patterned structure for prophylaxis of infections: an in vivo study. RSC Adv 2018; 8:9223-9231. [PMID: 35541855 PMCID: PMC9078646 DOI: 10.1039/c7ra12347g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Accepted: 02/21/2018] [Indexed: 11/21/2022] Open
Abstract
Vancomycin-loaded titanium coatings with an interconnected micro-patterned structure for prophylaxis of titanium implant associated infection.
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Affiliation(s)
- Hao Zhang
- Department of Orthopedics
- Changhai Hospital
- The Second Military Medical University
- Shanghai
- China
| | - Guangchao Wang
- Department of Orthopedics
- Changhai Hospital
- The Second Military Medical University
- Shanghai
- China
| | - Peizhao Liu
- Department of Orthopedics
- Changhai Hospital
- The Second Military Medical University
- Shanghai
- China
| | - Dake Tong
- Department of Orthopedics
- Changhai Hospital
- The Second Military Medical University
- Shanghai
- China
| | - Chen Ding
- Department of Orthopedics
- Changhai Hospital
- The Second Military Medical University
- Shanghai
- China
| | - Zequan Zhang
- Key Laboratory of Inorganic Coating Materials
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai
- China
| | - Youtao Xie
- Key Laboratory of Inorganic Coating Materials
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai
- China
| | - Hao Tang
- Department of Orthopedics
- Changhai Hospital
- The Second Military Medical University
- Shanghai
- China
| | - Fang Ji
- Department of Orthopedics
- Changhai Hospital
- The Second Military Medical University
- Shanghai
- China
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21
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Mishra B, Wang G. Titanium surfaces immobilized with the major antimicrobial fragment FK-16 of human cathelicidin LL-37 are potent against multiple antibiotic-resistant bacteria. BIOFOULING 2017; 33:544-555. [PMID: 28675109 PMCID: PMC5610571 DOI: 10.1080/08927014.2017.1332186] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 05/12/2017] [Indexed: 05/23/2023]
Abstract
Infections on implanted medical devices are a challenging problem, especially when bacteria form difficult-to-treat biofilms. Antimicrobial peptides are considered to be a solution due to their potency against antibiotic-resistant superbugs. Previously, the authors' laboratory demonstrated the prevention of staphylococcal biofilm formation in an animal catheter model by injecting merecidin (formerly known as 17BIPHE2), a peptide engineered based on the only human cathelicidin. This study documents an alternative solution via covalent immobilization of FK-16, amino acid sequence FKRIVQRIKDFLRNLV-amide, which corresponds to the major antimicrobial region (residues 17-32) of LL-37. FK-16 is superior to the longer peptide LL-37 in terms of synthesis cost and the shorter peptide KR-12 in terms of activity spectrum. Indeed, the FK16-coated titanium surface showed a broad-spectrum activity against the ESKAPE pathogens, including Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species. It also demonstrated anti-adhesion and biofilm inhibition capabilities against both S. aureus and E. coli.
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Affiliation(s)
- Biswajit Mishra
- Department of Pathology and Microbiology, College of Medicine, University of Nebraska Medical Center, 986495 Nebraska Medical Center, Omaha, NE 68198-6495, USA
| | - Guangshun Wang
- Department of Pathology and Microbiology, College of Medicine, University of Nebraska Medical Center, 986495 Nebraska Medical Center, Omaha, NE 68198-6495, USA
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22
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Nie B, Long T, Li H, Wang X, Yue B. A comparative analysis of antibacterial properties and inflammatory responses for the KR-12 peptide on titanium and PEGylated titanium surfaces. RSC Adv 2017. [DOI: 10.1039/c7ra05538b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Covalent KR-12 peptide immobilisation on the Ti surface with a grafted PEG spacer showed remarkable antibacterial properties and reduced macrophage inflammatory responses.
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Affiliation(s)
- Bin'en Nie
- Department of Bone and Joint Surgery
- Renji Hospital
- Shanghai Jiaotong University School of Medicine
- P. R. China
| | - Teng Long
- Department of Bone and Joint Surgery
- Renji Hospital
- Shanghai Jiaotong University School of Medicine
- P. R. China
| | - Hui Li
- Department of Bone and Joint Surgery
- Renji Hospital
- Shanghai Jiaotong University School of Medicine
- P. R. China
| | - Xiaojie Wang
- Department of General Dentistry
- Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai Key Laboratory of Stomatology
- Shanghai 200011
| | - Bing Yue
- Department of Bone and Joint Surgery
- Renji Hospital
- Shanghai Jiaotong University School of Medicine
- P. R. China
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23
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Wang G, Zhang H, He Q, Tong D, Ding C, Liu P, Zhang Z, Xie Y, Ji F. Micro-patterned titanium coatings with a grid-like structure doped with vancomycin against bacteria and affecting osteogenic differentiation. RSC Adv 2017. [DOI: 10.1039/c6ra27996a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The present study aimed to investigate the effects of micro-patterned titanium coatings doped with vancomycin on antibacterial activity and osteogenic differentiation and to improve the bioactivity of the inert titanium..
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Affiliation(s)
- Guangchao Wang
- Department of Orthopedics
- Changhai Hospital
- The Second Military Medical University
- Shanghai 200433
- China
| | - Hao Zhang
- Department of Orthopedics
- Changhai Hospital
- The Second Military Medical University
- Shanghai 200433
- China
| | - Qianyun He
- Department of Orthopedics
- Changhai Hospital
- The Second Military Medical University
- Shanghai 200433
- China
| | - Dake Tong
- Department of Orthopedics
- Changhai Hospital
- The Second Military Medical University
- Shanghai 200433
- China
| | - Chen Ding
- Department of Orthopedics
- Changhai Hospital
- The Second Military Medical University
- Shanghai 200433
- China
| | - Peizhao Liu
- Department of Orthopedics
- Changhai Hospital
- The Second Military Medical University
- Shanghai 200433
- China
| | - Zequan Zhang
- Key Laboratory of Inorganic Coating Materials
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Youtao Xie
- Key Laboratory of Inorganic Coating Materials
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Fang Ji
- Department of Orthopedics
- Changhai Hospital
- The Second Military Medical University
- Shanghai 200433
- China
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24
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Covalent Immobilization of Enoxacin onto Titanium Implant Surfaces for Inhibiting Multiple Bacterial Species Infection and In Vivo Methicillin-Resistant Staphylococcus aureus Infection Prophylaxis. Antimicrob Agents Chemother 2016; 61:AAC.01766-16. [PMID: 27799220 DOI: 10.1128/aac.01766-16] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 10/25/2016] [Indexed: 12/19/2022] Open
Abstract
Infection is one of the most important causes of titanium implant failure in vivo A developing prophylactic method involves the immobilization of antibiotics, especially vancomycin, onto the surface of the titanium implant. However, these methods have a limited effect in curbing multiple bacterial infections due to antibiotic specificity. In the current study, enoxacin was covalently bound to an amine-functionalized Ti surface by use of a polyethylene glycol (PEG) spacer, and the bactericidal effectiveness was investigated in vitro and in vivo The titanium surface was amine functionalized with 3-aminopropyltriethoxysilane (APTES), through which PEG spacer molecules were covalently immobilized onto the titanium, and then the enoxacin was covalently bound to the PEG, which was confirmed by X-ray photoelectron spectrometry (XPS). A spread plate assay, confocal laser scanning microscopy (CLSM), and scanning electron microscopy (SEM) were used to characterize the antimicrobial activity. For the in vivo study, Ti implants were inoculated with methicillin-resistant Staphylococcus aureus (MRSA) and implanted into the femoral medullary cavity of rats. The degree of infection was assessed by radiography, micro-computed tomography, and determination of the counts of adherent bacteria 3 weeks after surgery. Our data demonstrate that the enoxacin-modified PEGylated Ti surface effectively prevented bacterial colonization without compromising cell viability, adhesion, or proliferation in vitro Furthermore, it prevented MRSA infection of the Ti implants in vivo Taken together, our results demonstrate that the use of enoxacin-modified Ti is a potential approach to the alleviation of infections of Ti implants by multiple bacterial species.
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Nie B, Ao H, Long T, Zhou J, Tang T, Yue B. Immobilizing bacitracin on titanium for prophylaxis of infections and for improving osteoinductivity: An in vivo study. Colloids Surf B Biointerfaces 2016; 150:183-191. [PMID: 27914255 DOI: 10.1016/j.colsurfb.2016.11.034] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 11/07/2016] [Accepted: 11/25/2016] [Indexed: 11/16/2022]
Abstract
Bacitracin immobilized on the titanium (Ti) surface significantly improves anti-bacterial activity and biocompatibility in vitro. In the current study, we investigated the biologic performance (bactericidal effect and bone-implant integration) of bacitracin-modified Ti in vivo. A rat osteomyelitis model with femoral medullary cavity placement of Ti rods was employed to analyze the prophylactic effect of bacitracin-modified Ti (Ti-BC). Thirty-six female Sprague Dawley (SD) rats were used to establish the Ti implant-associated infection. The Ti and Ti-BC rods were incubated with and without Staphylococcus aureus to mimic the contaminated Ti rod and were implanted into the medullary cavity of the left femur, and sterile Ti rods were used as the blank control. After 3 weeks, the bone pathology was evaluated using X-ray and micro-computed tomography (micro-CT) analysis. For the investigation of the Ti-BC implant osseointegration in vivo, fifteen SD rats were divided into three groups (N=5), namely Ti, Ti-dopamine immobilized (Ti-DOPA), and Ti-BC. Ti rods were implanted into the left femoral cavity and micro-CT and histological evaluation was conducted after 12 weeks. The in vivo study indicated that Ti-immobilized bacitracin owned the prophylaxis potential for the infection associated with the Ti implants and allowed for the osseointegration. Thus, the multiple biofunctionalized Ti implants could be realized via immobilization of bacitracin, making them promising candidates for preventing the Ti implant-associated infections while retaining the osseointegration effects.
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Affiliation(s)
- Bin'en Nie
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, PR China
| | - Haiyong Ao
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, PR China
| | - Teng Long
- Department of Joint Surgery and Sports Medicine, Shanghai Renji Hospital, Shanghai Jiao Tong University School of Medicine, PR China
| | - Jianliang Zhou
- Department of Cardiothoracic Surgery, the Second Affiliated Hospital of Nanchang University, PR China
| | - Tingting Tang
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, PR China
| | - Bing Yue
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, PR China; Department of Joint Surgery and Sports Medicine, Shanghai Renji Hospital, Shanghai Jiao Tong University School of Medicine, PR China.
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