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Sun Y, Xu W, Jiang C, Zhou T, Wang Q, A L. Gold nanoparticle decoration potentiate the antibacterial enhancement of TiO 2 nanotubes via sonodynamic therapy against peri-implant infections. Front Bioeng Biotechnol 2022; 10:1074083. [PMID: 36466357 PMCID: PMC9713247 DOI: 10.3389/fbioe.2022.1074083] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 11/07/2022] [Indexed: 09/22/2023] Open
Abstract
Inflammatory damage from bacterial biofilms usually causes the failure of tooth implantation. A promising solution for this challenge is to use an implant surface with a long-term, in-depth and efficient antibacterial feature. In this study, we developed an ultrasound-enhanced antibacterial implant surface based on Au nanoparticle modified TiO2 nanotubes (AuNPs-TNTs). As an artificial tooth surface, films based on AuNPs-TNTs showed excellent biocompatibility. Importantly, compared to bare titania surface, a larger amount of reactive oxygen radicals was generated on AuNPs-TNTs under an ultrasound treatment. For a proof-of-concept application, Porphyromonas gingivalis (P. gingivalis) was used as the model bacteria; the as-proposed AuNPs-TNTs exhibited significantly enhanced antibacterial activity under a simple ultrasound treatment. This antibacterial film offers a new way to design the surface of an artificial implant coating for resolving the bacterial infection induced failure of dental implants.
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Affiliation(s)
- Yue Sun
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Sciences and Technology for Stomatology Nanoengineering, Changchun, China
| | - Wenzhou Xu
- Department of Periodontology, School and Hospital of Stomatology, Jilin University, Changchun, China
| | - Cong Jiang
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, China
| | - Tianyu Zhou
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, China
| | - Qiqi Wang
- Department of Periodontology, School and Hospital of Stomatology, Jilin University, Changchun, China
| | - Lan A
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Sciences and Technology for Stomatology Nanoengineering, Changchun, China
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2
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He Y, Li Y, Zuo E, Chai S, Ren X, Fei T, Ma G, Wang X, Liu H. A Novel Antibacterial Titanium Modification with a Sustained Release of Pac-525. NANOMATERIALS 2021; 11:nano11123306. [PMID: 34947655 PMCID: PMC8704243 DOI: 10.3390/nano11123306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/26/2021] [Accepted: 11/26/2021] [Indexed: 12/12/2022]
Abstract
For the benefit of antibacterial Ti on orthopedic and dental implants, a bioactive coating (Pac@PLGA MS/HA coated Ti) was deposited on the surface of pure titanium (Ti), which included two layers: an acid-alkali heat pretreated biomimetic mineralization layer and an electrosprayed Poly (D,L-lactide-co- glycolic acid) (PLGA) microsphere layer as a sustained-release system. Hydroxyapatite (HA) in mineralization layer was primarily prepared on the Ti followed by the antibacterial coating of Pac-525 loaded by PLGA microspheres. After observing the antimicrobial peptides distributed uniformly on the titanium surface, the release assay showed that the release of Pac-525 from Pac@PLGA MS/HA coated Ti provided a large initial burst followed by a slow release at a flat rate. Pac@PLGA MS/HA coated Ti exhibited a strong cytotoxicity to both Gram-negative bacteria (Escherichia coli) and Gram-positive bacteria (Staphylococcus aureus). In addition, Pac@PLGA MS/HA coated Ti did not affect the growth and adhesion of the osteoblast-like cell line, MC3T3-E1. These data suggested that a bionic mineralized composite coating with long-term antimicrobial activity was successfully prepared.
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Affiliation(s)
- Yuzhu He
- School of Stomatology, Dalian Medical University, Dalian 116044, China; (Y.H.); (Y.L.); (E.Z.); (S.C.); (X.R.); (T.F.)
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Yuanyuan Li
- School of Stomatology, Dalian Medical University, Dalian 116044, China; (Y.H.); (Y.L.); (E.Z.); (S.C.); (X.R.); (T.F.)
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Enjun Zuo
- School of Stomatology, Dalian Medical University, Dalian 116044, China; (Y.H.); (Y.L.); (E.Z.); (S.C.); (X.R.); (T.F.)
| | - Songling Chai
- School of Stomatology, Dalian Medical University, Dalian 116044, China; (Y.H.); (Y.L.); (E.Z.); (S.C.); (X.R.); (T.F.)
| | - Xiang Ren
- School of Stomatology, Dalian Medical University, Dalian 116044, China; (Y.H.); (Y.L.); (E.Z.); (S.C.); (X.R.); (T.F.)
| | - Tao Fei
- School of Stomatology, Dalian Medical University, Dalian 116044, China; (Y.H.); (Y.L.); (E.Z.); (S.C.); (X.R.); (T.F.)
| | - Guowu Ma
- School of Stomatology, Dalian Medical University, Dalian 116044, China; (Y.H.); (Y.L.); (E.Z.); (S.C.); (X.R.); (T.F.)
- Correspondence: (G.M.); (X.W.); (H.L.); Tel.: +86-8611-0401 (G.M.); +86-1062-782-966 (X.W.); +86-8611-0404 (H.L.)
| | - Xiumei Wang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
- Correspondence: (G.M.); (X.W.); (H.L.); Tel.: +86-8611-0401 (G.M.); +86-1062-782-966 (X.W.); +86-8611-0404 (H.L.)
| | - Huiying Liu
- School of Stomatology, Dalian Medical University, Dalian 116044, China; (Y.H.); (Y.L.); (E.Z.); (S.C.); (X.R.); (T.F.)
- Correspondence: (G.M.); (X.W.); (H.L.); Tel.: +86-8611-0401 (G.M.); +86-1062-782-966 (X.W.); +86-8611-0404 (H.L.)
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3
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Improvisation and Evaluation of Laterosporulin Coated Titanium Surfaces for dental Applications: An In Vitro Investigation. Indian J Microbiol 2021; 61:203-211. [PMID: 33927461 DOI: 10.1007/s12088-021-00933-7] [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: 01/11/2021] [Accepted: 03/22/2021] [Indexed: 10/21/2022] Open
Abstract
Despite recent improvement in implant survival rates, there remains a significant demand for enhancing the long-term clinical efficacy of titanium (Ti) implants, particularly for the prevention of peri-implantitis. Bioactive substances such as antimicrobial peptides are emerging as effective alternatives for contemporary antimicrobial agents used in dental health care. Current research work was focused to use laterosporulins that are non-haemolytic cationic antimicrobial peptides from Brevibacillus spp. for coating commercially available Ti discs. The coated Ti surfaces were evaluated in vitro for biofilm formation by two dental plaque isolates Streptococcus gordonii strain DIGK25 and S. mutans strain DIGK119 as representatives of commensal and pathogenic streptococci respectively. The biofilm inhibition was ascertained with replicated experiments on hydroxyapatite discs and confirmed by florescence microscopy. The laterosporulin coated Ti discs showed significantly reduced biofilm formation by oral streptococci and displayed promising potential to enhance the antibacterial surface properties. Such improvised Ti surfaces may curb the menace of oral streptococcal biofilm formation on dental implants and the associated implant failures.
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Fouillen A, Mary C, Ponce KJ, Moffatt P, Nanci A. A proline rich protein from the gingival seal around teeth exhibits antimicrobial properties against Porphyromonas gingivalis. Sci Rep 2021; 11:2353. [PMID: 33504866 PMCID: PMC7840901 DOI: 10.1038/s41598-021-81791-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 01/08/2021] [Indexed: 12/22/2022] Open
Abstract
The gingival seal around teeth prevents bacteria from destroying the tooth-supporting tissues and disseminating throughout the body. Porphyromonas gingivalis, a major periodontopathogen, degrades components of the specialized extracellular matrix that mediates attachment of the gingiva to the tooth. Of these, secretory calcium-binding phosphoprotein proline-glutamine rich 1 (SCPPPQ1) protein has a distinctive resistance to degradation, suggesting that it may offer resistance to bacterial attack. In silico analysis of its amino acid sequence was used to explore its molecular characteristics and to predict its two- and three-dimensional structure. SCPPPQ1 exhibits similarities with both proline-rich and cationic antimicrobial proteins, suggesting a putative antimicrobial potential. A combination of imaging approaches showed that incubation with 20 μM of purified SCPPPQ1 decrease bacterial number (p < 0.01). Fluorescence intensity decreased by 70% following a 2 h incubation of Porphyromonas gingivalis with the protein. Electron microscopy analyses revealed that SCPPPQ1 induced bacterial membrane disruption and breaches. While SCPPPQ1 has no effect on mammalian cells, our results suggest that it is bactericidal to Porphyromonas gingivalis, and that this protein, normally present in the gingival seal, may be exploited to maintain a healthy seal and prevent systemic dissemination of bacteria.
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Affiliation(s)
- Aurélien Fouillen
- Laboratory for the Study of Calcified Tissues and Biomaterials, Faculty of Dental Medicine, Université de Montréal, Montreal, QC, Canada.,Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montreal, QC, Canada
| | - Charline Mary
- Laboratory for the Study of Calcified Tissues and Biomaterials, Faculty of Dental Medicine, Université de Montréal, Montreal, QC, Canada.,Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montreal, QC, Canada
| | - Katia Julissa Ponce
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montreal, QC, Canada
| | - Pierre Moffatt
- Department of Human Genetics, McGill University, Montreal, QC, Canada.,Shriners Hospitals for Children - Canada, Montreal, QC, Canada
| | - Antonio Nanci
- Laboratory for the Study of Calcified Tissues and Biomaterials, Faculty of Dental Medicine, Université de Montréal, Montreal, QC, Canada. .,Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montreal, QC, Canada.
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Abstract
Dental implants are widely used in the field of oral restoration, but there are still problems leading to implant failures in clinical application, such as failed osseointegration, marginal bone resorption, and peri-implantitis, which restrict the success rate of dental implants and patient satisfaction. Poor osseointegration and bacterial infection are the most essential reasons resulting in implant failure. To improve the clinical outcomes of implants, many scholars devoted to modifying the surface of implants, especially to preparing different physical and chemical modifications to improve the osseointegration between alveolar bone and implant surface. Besides, the bioactive-coatings to promote the adhesion and colonization of ossteointegration-related proteins and cells also aim to improve the osseointegration. Meanwhile, improving the anti-bacterial performance of the implant surface can obstruct the adhesion and activity of bacteria, avoiding the occurrence of inflammation related to implants. Therefore, this review comprehensively investigates and summarizes the modifying or coating methods of implant surfaces, and analyzes the ossteointegration ability and anti-bacterial characteristics of emerging functional coatings in published references.
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A Multifunctional Antibacterial and Osteogenic Nanomedicine: QAS-Modified Core-Shell Mesoporous Silica Containing Ag Nanoparticles. BIOMED RESEARCH INTERNATIONAL 2020; 2020:4567049. [PMID: 33015165 PMCID: PMC7520689 DOI: 10.1155/2020/4567049] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 08/21/2020] [Accepted: 09/04/2020] [Indexed: 12/16/2022]
Abstract
Treatments for infectious bone defects such as periodontitis require antibacterial and osteogenic differentiation capabilities. Nanotechnology has prompted the development of multifunctional material. In this research, we aim to synthesize a nanoparticle that can eliminate periodontal pathogenic microorganisms and simultaneously stimulate new bone tissue regeneration and mineralization. QAS-modified core-shell mesoporous silica containing Ag nanoparticles (Ag@QHMS) was successfully synthesized through the classic hydrothermal method and surface quaternary ammonium salt functionalization. The Ag@QHMS in vitro antibacterial activity was explored via coculture with Staphylococcus aureus, Escherichia coli, and Porphyromonas gingivalis biofilms. Bone mesenchymal stem cells (BMSCs) were selected for observing cytotoxicity, apoptosis, and osteogenic differentiation. Ag@QHMS showed a good sustained release profile of Ag+ and a QAS-grafted mesoporous structure. Compared with the single-contact antibacterial activity of QHMS, Ag@QHMS exhibited a more efficient and stable concentration-dependent antimicrobial efficacy; the minimum inhibitory concentration was within 100 μg/ml, which was below the BMSC biocompatibility concentration (200 μg/ml). Thus, apoptosis would not occur while promoting the increased expression of osteogenic-associated factors, such as runt-related transcription factor 2 (RUNX2), alkaline phosphatase (ALP), osteopontin (OPN), osteocalcin (OCN), bone sialoprotein (BSP), and collagen type 1 (COL-1). A safe concentration of particles can stimulate cell alkaline phosphatase and matrix calcium salt deposition. The dual antibacterial effect from the direct contact killing of QAS and the sustained release of Ag nanoparticles, along with the Ag-promoted osteogenic differentiation, had been verified and utilized in Ag@QHMS. This system demonstrates the potential for utilizing pluripotent biomaterials to treat complex lesions.
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7
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He Y, Jin Y, Ying X, Wu Q, Yao S, Li Y, Liu H, Ma G, Wang X. Development of an antimicrobial peptide-loaded mineralized collagen bone scaffold for infective bone defect repair. Regen Biomater 2020; 7:515-525. [PMID: 33149940 PMCID: PMC7597801 DOI: 10.1093/rb/rbaa015] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/21/2020] [Accepted: 03/17/2020] [Indexed: 12/11/2022] Open
Abstract
The repair of infective bone defects is a great challenge in clinical work. It is of vital importance to develop a kind of bone scaffold with good osteogenic properties and long-term antibacterial activity for local anti-infection and bone regeneration. A porous mineralized collagen (MC) scaffold containing poly(d,l-lactide-co-glycolic acid) (PLGA) microspheres loaded with two antibacterial synthetic peptides, Pac-525 or KSL-W was developed and characterized via scanning electron microscopy (SEM), porosity measurement, swelling and mechanical tests. The results showed that the MC scaffold embedded with smooth and compact PLGA microspheres had a positive effect on cell growth and also had antibacterial properties. Through toxicity analysis, cell morphology and proliferation analysis and alkaline phosphatase evaluation, the antibacterial scaffolds showed excellent biocompatibility and osteogenic activity. The antibacterial property evaluated with Staphylococcus aureus and Escherichia coli suggested that the sustained release of Pac-525 or KSL-W from the scaffolds could inhibit the bacterial growth aforementioned in the long term. Our results suggest that the antimicrobial peptides-loaded MC bone scaffold has good antibacterial and osteogenic activities, thus providing a great promise for the treatment of infective bone defects.
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Affiliation(s)
- Yuzhu He
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China.,Department of Oral Prosthodontics, School of Stomatology, Dalian Medical University, Lvshun South Road, Lushunkou District, Dalian 116044, China
| | - Yahui Jin
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China.,Department of Oral Prosthodontics, School of Stomatology, Dalian Medical University, Lvshun South Road, Lushunkou District, Dalian 116044, China.,Department of Stomatology, Zhejiang Provincial Hospital of Chinese Medicine, The 9th Street, Economic and Technological Development Zone, Hangzhou 310018, China
| | - Xiaoxia Ying
- Department of Oral Prosthodontics, School of Stomatology, Dalian Medical University, Lvshun South Road, Lushunkou District, Dalian 116044, China
| | - Qiong Wu
- School of Life Sciences, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China
| | - Shenglian Yao
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China
| | - Yuanyuan Li
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China.,Department of Oral Prosthodontics, School of Stomatology, Dalian Medical University, Lvshun South Road, Lushunkou District, Dalian 116044, China
| | - Huiying Liu
- Department of Oral Prosthodontics, School of Stomatology, Dalian Medical University, Lvshun South Road, Lushunkou District, Dalian 116044, China
| | - Guowu Ma
- Department of Oral Prosthodontics, School of Stomatology, Dalian Medical University, Lvshun South Road, Lushunkou District, Dalian 116044, China
| | - Xiumei Wang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China
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8
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He Y, Jin Y, Wang X, Yao S, Li Y, Wu Q, Ma G, Cui F, Liu H. An Antimicrobial Peptide-Loaded Gelatin/Chitosan Nanofibrous Membrane Fabricated by Sequential Layer-by-Layer Electrospinning and Electrospraying Techniques. NANOMATERIALS 2018; 8:nano8050327. [PMID: 29758001 PMCID: PMC5977341 DOI: 10.3390/nano8050327] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 04/22/2018] [Accepted: 05/04/2018] [Indexed: 12/16/2022]
Abstract
Guided bone regeneration (GBR) technique is widely used in the treatment of bone defects caused by peri-implantitis, periodontal disease, etc. However, the GBR membranes commonly used in clinical treatments currently have no antibacterial activity. Therefore, in this study, sequential layer-by-layer electrospinning and electrospraying techniques were utilized to prepare a gelatin (Gln) and chitosan (CS) composite GBR membrane containing hydroxyapatite nanoparticles (nHAp) and antimicrobial peptide (Pac-525)-loaded PLGA microspheres (AMP@PLGA-MS), which was supposed to have osteogenic and antibacterial activities. The scanning electron microscope (SEM) observation showed that the morphology of the nanofibers and microspheres could be successfully produced. The diameters of the electrospun fibers with and without nHAp were 359 ± 174 nm and 409 ± 197 nm, respectively, and the mechanical properties of the membrane were measured according to the tensile stress-strain curve. Both the involvement of nHAp and the chemical crosslinking were able to enhance their tensile strength. In vitro cell culture of rat bone marrow mesenchymal stem cells (rBMSCs) indicated that the Gln/CS composite membrane had an ideal biocompatibility with good cell adhesion, spreading, and proliferation. In addition, the Gln/CS membrane containing nHAp could promote osteogenic differentiation of rBMSCs. Furthermore, according to the in vitro drug release assay and antibacterial experiments, the composite GBR membrane containing AMP@PLGA-MS exhibited a long-term sustained release of Pac-525, which had bactericidal activity within one week and antibacterial activity for up to one month against two kinds of bacteria, S. aureus and E. coli. Our results suggest that the antimicrobial peptide-loaded Gln/CS composite membrane (AMP@PLGA-MS@Gln/CS/nHAp) has a great promise in bone generation-related applications for the unique functions of guiding bone regeneration and inhibiting bacterial infection as well.
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Affiliation(s)
- Yuzhu He
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Dalian Medical University, Dalian 116044, China.
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
| | - Yahui Jin
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Dalian Medical University, Dalian 116044, China.
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
- Zhejiang Provincial Hospital of Chinese Medicine, Hangzhou 310018, China.
| | - Xiumei Wang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
| | - Shenglian Yao
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
| | - Yuanyuan Li
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Dalian Medical University, Dalian 116044, China.
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
| | - Qiong Wu
- School of Life Sciences, Tsinghua University, Beijing 100084, China.
| | - Guowu Ma
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Dalian Medical University, Dalian 116044, China.
| | - Fuzhai Cui
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
| | - Huiying Liu
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Dalian Medical University, Dalian 116044, China.
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9
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Li Y, Na R, Wang X, Liu H, Zhao L, Sun X, Ma G, Cui F. Fabrication of Antimicrobial Peptide-Loaded PLGA/Chitosan Composite Microspheres for Long-Acting Bacterial Resistance. Molecules 2017; 22:molecules22101637. [PMID: 28961197 PMCID: PMC6151433 DOI: 10.3390/molecules22101637] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 09/23/2017] [Accepted: 09/25/2017] [Indexed: 11/16/2022] Open
Abstract
An antimicrobial decapeptide, KSL-W (KKVVFWVKFK-CONH₂), which could maintain stable antimicrobial activity in saliva, has therefore been widely used to inhibit biofilm formation on teeth and prevent the growth of oral microorganisms for related infectious diseases treatment. In order to control the release of KSL-W for long-term bacterial resistance, KSL-W-loaded PLGA/chitosan composite microspheres (KSL/PLGA/CS MSs) were prepared by electrospraying and combined crosslinking-emulsion methods. Different formulations of microspheres were characterized as to surface morphology, size distribution, encapsulation efficiency, in vitro drug release, and antimicrobial activity. Antibacterial experiment demonstrated the prolonged antimicrobial and inhibitory effects of KSL/PLGA/CS MSs on oral bacteria. Moreover, the cell proliferation assay proved that the released KSL-W antibacterial dosage had no cytotoxicity to the growth of osteoblast MC3T3-E1. Thus, our study suggested that the KSL-W-loaded PLGA/CS composite microspheres may have potentially therapeutic applications as an effective drug delivery system in the treatment of oral infectious diseases such as periodontitis and periodontitis, and also within bone graft substitutes for alveolar bone augmentation.
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Affiliation(s)
- Yuanyuan Li
- State Key Laboratory of New Ceramic & Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
- Department of Prosthodontics, School of Stomatology, Dalian Medical University, Dalian 116044, China.
- Department of Stomatology, Shengli Oil Field Central Hospital, Dongying 257034, China.
| | - Rongwei Na
- State Key Laboratory of New Ceramic & Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
- Department of Prosthodontics, School of Stomatology, Dalian Medical University, Dalian 116044, China.
| | - Xiumei Wang
- State Key Laboratory of New Ceramic & Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
| | - Huiying Liu
- Department of Prosthodontics, School of Stomatology, Dalian Medical University, Dalian 116044, China.
| | - Lingyun Zhao
- State Key Laboratory of New Ceramic & Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
| | - Xiaodan Sun
- State Key Laboratory of New Ceramic & Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
| | - Guowu Ma
- Department of Prosthodontics, School of Stomatology, Dalian Medical University, Dalian 116044, China.
| | - Fuzhai Cui
- State Key Laboratory of New Ceramic & Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
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10
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Gerits E, Verstraeten N, Michiels J. New approaches to combat Porphyromonas gingivalis biofilms. J Oral Microbiol 2017; 9:1300366. [PMID: 28473880 PMCID: PMC5405727 DOI: 10.1080/20002297.2017.1300366] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 03/01/2017] [Accepted: 02/22/2017] [Indexed: 12/14/2022] Open
Abstract
In nature, bacteria predominantly reside in structured, surface-attached communities embedded in a self-produced, extracellular matrix. These so-called biofilms play an important role in the development and pathogenesis of many infections, as they are difficult to eradicate due to their resistance to antimicrobials and host defense mechanisms. This review focusses on the biofilm-forming periodontal bacterium Porphyromonas gingivalis. Current knowledge on the virulence mechanisms underlying P. gingivalis biofilm formation is presented. In addition, oral infectious diseases in which P. gingivalis plays a key role are described, and an overview of conventional and new therapies for combating P. gingivalis biofilms is given. More insight into this intriguing pathogen might direct the development of better strategies to combat oral infections.
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Affiliation(s)
- Evelien Gerits
- Department of Microbial and Molecular Systems, KU Leuven, Centre of Microbial and Plant Genetics, Leuven, Belgium
| | - Natalie Verstraeten
- Department of Microbial and Molecular Systems, KU Leuven, Centre of Microbial and Plant Genetics, Leuven, Belgium
| | - Jan Michiels
- Department of Microbial and Molecular Systems, KU Leuven, Centre of Microbial and Plant Genetics, Leuven, Belgium
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11
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Zhou W, Zhang X, Zhu CL, He ZY, Liang JP, Song ZC. Melatonin Receptor Agonists as the "Perioceutics" Agents for Periodontal Disease through Modulation of Porphyromonas gingivalis Virulence and Inflammatory Response. PLoS One 2016; 11:e0166442. [PMID: 27832188 PMCID: PMC5104381 DOI: 10.1371/journal.pone.0166442] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 10/29/2016] [Indexed: 11/18/2022] Open
Abstract
Aim “Perioceutics” including antimicrobial therapy and host modulatory therapy has emerged as a vital adjunctive treatment of periodontal disease. Melatonin level was significantly reduced in patients with periodontal diseases suggesting melatonin could be applied as a potential “perioceutics” treatment of periodontal diseases. This study aims to investigate the effects of melatonin receptor agonists (melatonin and ramelteon) on Porphyromonas gingivalis virulence and Porphyromonas gingivalis-derived lipopolysaccharide (Pg-LPS)-induced inflammation. Methods Effects of melatonin receptor agonists on Porphyromonas gingivalis planktonic cultures were determined by microplate dilution assays. Formation, reduction, and viability of Porphyromonas gingivalis biofilms were detected by crystal violet staining and MTT assays, respectively. Meanwhile, biofilms formation was also observed by confocal laser scanning microscopy (CLSM). The effects on gingipains and hemolytic activities of Porphyromonas gingivalis were evaluated using chromogenic peptides and sheep erythrocytes. The mRNA expression of virulence and iron/heme utilization was assessed using RT-PCR. In addition, cell viability of melatonin receptor agonists on human gingival fibroblasts (HGFs) was evaluated by MTT assays. After pretreatment of melatonin receptor agonists, HGFs were stimulated with Pg-LPS and then release of cytokines (IL-6 and lL-8) was measured by enzyme-linked immunosorbent assay (ELISA). Results Melatonin and ramelteon did exhibit antimicrobial effects against planktonic culture. Importantly, they inhibited biofilm formation, reduced the established biofilms, and decreased biofilm viability of Porphyromonas gingivalis. Furthermore, they at sub-minimum inhibitory concentration (sub-MIC) concentrations markedly inhibited the proteinase activities of gingipains and hemolysis in a dose-dependent manner. They at sub-MIC concentrations significantly inhibited the mRNA expression of virulence factors (kgp, rgpA, rgpB, hagA, and ragA), while increasing the mRNA expression of ferritin (ftn) or hemolysin (hem). They did not show obvious cytotoxicity toward HGFs. They inhibited Pg-LPS-induced IL-6 and IL-8 secretion, which was reversed by luzindole, the melatonin receptor antagonist. Conclusion Melatonin receptor agonists can inhibit planktonic and biofilm growth of Porphyromonas gingivalis by affecting the virulent properties, as well as Pg-LPS-induced inflammatory response. Our study provides new evidence that melatonin receptor agonists might be useful as novel “perioceutics” agents to prevent and treat Porphyromonas gingivalis-associated periodontal diseases.
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Affiliation(s)
- Wei Zhou
- Department of Periodontology, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, 639 Zhi Zao Ju Road, Shanghai 200011, China
- Shanghai Research Institute of Stomatology, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, 639 Zhi Zao Ju Road, Shanghai 200011, China
| | - Xuan Zhang
- Department of Pharmacy, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhi Zao Ju Road, Shanghai 200011, China
| | - Cai-Lian Zhu
- Shanghai Research Institute of Stomatology, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, 639 Zhi Zao Ju Road, Shanghai 200011, China
| | - Zhi-Yan He
- Shanghai Research Institute of Stomatology, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, 639 Zhi Zao Ju Road, Shanghai 200011, China
| | - Jing-Ping Liang
- Shanghai Research Institute of Stomatology, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, 639 Zhi Zao Ju Road, Shanghai 200011, China
- * E-mail: (ZCS); (JPL)
| | - Zhong-Chen Song
- Department of Periodontology, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, 639 Zhi Zao Ju Road, Shanghai 200011, China
- * E-mail: (ZCS); (JPL)
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Ramesh S, Govender T, Kruger HG, de la Torre BG, Albericio F. Short AntiMicrobial Peptides (SAMPs) as a class of extraordinary promising therapeutic agents. J Pept Sci 2016; 22:438-51. [DOI: 10.1002/psc.2894] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 04/08/2016] [Accepted: 04/11/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Suhas Ramesh
- Catalysis and Peptide Research Unit, School of Health Sciences; University of KwaZulu-Natal; Durban 4001 South Africa
| | - Thavendran Govender
- Catalysis and Peptide Research Unit, School of Health Sciences; University of KwaZulu-Natal; Durban 4001 South Africa
| | - Hendrik G. Kruger
- Catalysis and Peptide Research Unit, School of Health Sciences; University of KwaZulu-Natal; Durban 4001 South Africa
| | - Beatriz G. de la Torre
- Catalysis and Peptide Research Unit, School of Health Sciences; University of KwaZulu-Natal; Durban 4001 South Africa
| | - Fernando Albericio
- Catalysis and Peptide Research Unit, School of Health Sciences; University of KwaZulu-Natal; Durban 4001 South Africa
- School of Chemistry and Physics; University of KwaZulu-Natal; Durban 4001 South Africa
- CIBER-BBN, Networking Centre on Bioengineering; Biomaterials and Nanomedicine; Barcelona Science Park 08028 Barcelona Spain
- Department of Chemistry, College of Science; King Saud University; P.O. Box 2455 Riyadh 11451 Saudi Arabia
- Department of Organic Chemistry; University of Barcelona; 08028 Barcelona Spain
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