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Buduneli N, Bıyıkoğlu B, Kinane DF. Utility of gingival crevicular fluid components for periodontal diagnosis. Periodontol 2000 2024. [PMID: 39004819 DOI: 10.1111/prd.12595] [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: 02/09/2024] [Revised: 06/18/2024] [Accepted: 06/28/2024] [Indexed: 07/16/2024]
Abstract
Periodontal diseases are highly prevalent chronic diseases, and severe periodontitis creates functional and esthetic problems and decreases self-esteem for a large percentage of the older population worldwide. In many cases of periodontitis, there is no distinct tell-tale pain that motivates a patient to seek treatment, rather the signs become clinically detectable late, and typically when the disease has progressed to a problematic level for the life of the dentition. Early periodontal screening and diagnostics tools will provide early recognition of periodontal diseases and facilitate timely management of the disease to reduce tooth loss. To this goal, gingival crevicular fluid is easily sampled, can be repeatedly and non-invasively collected, and can be tested for potential biomarkers. Moreover, the site specificity of periodontal diseases enhances the usefulness of gingival crevicular fluid sampled from specific sites as a biofluid for diagnosis and longitudinal monitoring of periodontal diseases. The present review aimed to provide up-to-date information on potential diagnostic biomarkers with utility that can be assayed from gingival crevicular fluid samples, focusing on what is new and useful and providing only general historic background textually and in a tabulated format.
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Affiliation(s)
- Nurcan Buduneli
- Department of Periodontology, School of Dentistry, Ege University, Izmir, Turkey
| | - Başak Bıyıkoğlu
- Department of Periodontology, School Dentistry, Altinbas University, Istanbul, Turkey
| | - Denis F Kinane
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
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2
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Hix-Janssens T, Davies JR, Turner NW, Sellergren B, Sullivan MV. Molecularly imprinted nanogels as synthetic recognition materials for the ultrasensitive detection of periodontal disease biomarkers. Anal Bioanal Chem 2024:10.1007/s00216-024-05395-6. [PMID: 38898327 DOI: 10.1007/s00216-024-05395-6] [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: 04/04/2024] [Revised: 05/27/2024] [Accepted: 06/10/2024] [Indexed: 06/21/2024]
Abstract
Periodontal disease affects supporting dental structures and ranks among one of the top most expensive conditions to treat in the world. Moreover, in recent years, the disease has also been linked to cardiovascular and Alzheimer's diseases. At present, there is a serious lack of accurate diagnostic tools to identify people at severe risk of periodontal disease progression. Porphyromonas gingivalis is often considered one of the most contributing factors towards disease progression. It produces the Arg- and Lys-specific proteases Rgp and Kgp, respectively. Within this work, a short epitope sequence of these proteases is immobilised onto a magnetic nanoparticle platform. These are then used as a template to produce high-affinity, selective molecularly imprinted nanogels, using the common monomers N-tert-butylacrylamide (TBAM), N-isopropyl acrylamide (NIPAM), and N-(3-aminopropyl) methacrylamide hydrochloride (APMA). N,N-Methylene bis(acrylamide) (BIS) was used as a crosslinking monomer to form the interconnected polymeric network. The produced nanogels were immobilised onto a planar gold surface and characterised using the optical technique of surface plasmon resonance. They showed high selectivity and affinity towards their template, with affinity constants of 79.4 and 89.7 nM for the Rgp and Kgp epitope nanogels, respectively. From their calibration curves, the theoretical limit of detection was determined to be 1.27 nM for the Rgp nanogels and 2.00 nM for the Kgp nanogels. Furthermore, they also showed excellent selectivity against bacterial culture supernatants E8 (Rgp knockout), K1A (Kgp knockout), and W50-d (wild-type) strains in complex medium of brain heart infusion (BHI).
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Affiliation(s)
- Thomas Hix-Janssens
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06, Malmö, Sweden
| | - Julia R Davies
- Section for Oral Biology and Pathology, Faculty of Odontology, Malmö University, 205 06, Malmö, Sweden
| | - Nicholas W Turner
- Department of Chemistry, Dainton Building, University of Sheffield, Brook Hill, Sheffield, S3 7HF, UK
| | - Börje Sellergren
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, 205 06, Malmö, Sweden.
| | - Mark V Sullivan
- Department of Chemistry, Dainton Building, University of Sheffield, Brook Hill, Sheffield, S3 7HF, UK.
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3
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de Jongh CA, Bikker FJ, de Vries TJ, Werner A, Gibbs S, Krom BP. Porphyromonas gingivalis interaction with Candida albicans allows for aerobic escape, virulence and adherence. Biofilm 2024; 7:100172. [PMID: 38226024 PMCID: PMC10788424 DOI: 10.1016/j.bioflm.2023.100172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 12/12/2023] [Accepted: 12/12/2023] [Indexed: 01/17/2024] Open
Abstract
In the oral cavity Candida albicans interacts with many oral bacteria, including Porphyromonas gingivalis, both physically and metabolically. The aim of this in vitro study was to characterize these interactions and study their effects on the survival of P. gingivalis. First, metabolic interactions were evaluated by counting the colony forming units (CFU) after co-culturing. The results indicated that the anaerobic bacterium P. gingivalis survives under aerobic conditions when co-cultured with C. albicans. This is due to the oxygen consumption by C. albicans as determined by a reduction in survival upon the addition of Antimycin A. By measuring the protease activity, it was found that the presence of C. albicans induced gingipain activity by P. gingivalis, which is an important virulence factor. Adherence of P. gingivalis to hyphae of C. albicans was observed with a dynamic flow system. Using various C. albicans mutants, it was shown that the mechanism of adhesion was mediated by the cell wall adhesins, members of the agglutinin-like sequence (Als) family: Als3 and Als1. Furthermore, the two microorganisms could be co-cultured into forming a biofilm in which P. gingivalis can survive under aerobic culturing conditions, which was imaged using scanning electron microscopy. This study has further elucidated mechanisms of interaction, virulence acquisition and survival of P. gingivalis when co-cultured with C. albicans. Such survival could be essential for the pathogenicity of P. gingivalis in the oxygen-rich niches of the oral cavity. This study has emphasized the importance of interaction between different microbes in promoting survival, virulence and attachment of pathogens, which could be essential in facilitating penetration into the environment of the host.
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Affiliation(s)
- Caroline A. de Jongh
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
- Department of Periodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Floris J. Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Teun J. de Vries
- Department of Periodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Arie Werner
- Department of Dental Materials Science, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Susan Gibbs
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Bastiaan P. Krom
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
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4
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Hooshiar MH, Moghaddam MA, Kiarashi M, Al-Hijazi AY, Hussein AF, A Alrikabi H, Salari S, Esmaelian S, Mesgari H, Yasamineh S. Recent advances in nanomaterial-based biosensor for periodontitis detection. J Biol Eng 2024; 18:28. [PMID: 38637787 PMCID: PMC11027550 DOI: 10.1186/s13036-024-00423-6] [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: 02/24/2024] [Accepted: 04/05/2024] [Indexed: 04/20/2024] Open
Abstract
Periodontitis, a chronic inflammatory condition caused by bacteria, often causes gradual destruction of the components that support teeth, such as the alveolar bone, cementum, periodontal ligament, and gingiva. This ultimately results in teeth becoming loose and eventually falling out. Timely identification has a crucial role in preventing and controlling its progression. Clinical measures are used to diagnose periodontitis. However, now, there is a hunt for alternative diagnostic and monitoring methods due to the progress of technology. Various biomarkers have been assessed using multiple bodily fluids as sample sources. Furthermore, conventional periodontal categorization factors do not provide significant insights into the present disease activity, severity and amount of tissue damage, future development, and responsiveness to treatment. In recent times, there has been a growing utilization of nanoparticle (NP)-based detection strategies to create quick and efficient detection assays. Every single one of these platforms leverages the distinct characteristics of NPs to identify periodontitis. Plasmonic NPs include metal NPs, quantum dots (QDs), carbon base NPs, and nanozymes, exceptionally potent light absorbers and scatterers. These find application in labeling, surface-enhanced spectroscopy, and color-changing sensors. Fluorescent NPs function as photostable and sensitive instruments capable of labeling various biological targets. This article presents a comprehensive summary of the latest developments in the effective utilization of various NPs to detect periodontitis.
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Affiliation(s)
| | - Masoud Amiri Moghaddam
- Assistant Professor of Periodontics, Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Kiarashi
- College of Dentistry, Lorestan University of Medical Sciences, Khorramabad, Iran
| | | | | | - Hareth A Alrikabi
- Collage of Dentist, National University of Science and Technology, Dhi Qar, 64001, Iraq
| | - Sara Salari
- Doctor of Dental Surgery, Islamic Azad University of Medical Sciences, Esfahan, Iran
| | - Samar Esmaelian
- Faculty of Dentistry, Islamic Azad University, Tehran Branch, Tehran, Iran.
| | - Hassan Mesgari
- Department, Faculty of Dentistry Oral and Maxillofacial Surgery, Islamic Azad University, Tehran Branch, Tehran, Iran.
| | - Saman Yasamineh
- Young Researchers and Elite Club, Tabriz Branch, Islamic Azad University, Tabriz, Iran
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5
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Park SG, Lee HJ, Ji T, Kim K, Ohk SH. Aptamer Based SPREETA Sensor for the Detection of Porphyromonas gingivalis G-Protein. J Microbiol Biotechnol 2024; 34:289-295. [PMID: 38111313 PMCID: PMC10940744 DOI: 10.4014/jmb.2310.10042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/11/2023] [Accepted: 12/11/2023] [Indexed: 12/20/2023]
Abstract
We have developed an aptamer that specifically binds to Porphyromonas gingivalis to reduce the cellular damage caused by P. gingivalis infection and applied it as a biosensor. P. gingivalis is one of the major pathogens causing destructive periodontal disease among the periodontal microorganisms constituting complex biofilms. Porphyromonas gingivalis G-protein (PGP) known to play an important role in the transmission of germs was used as a target protein for the screening of aptamer. The aptamer that has binds to the G-protein of P. gingivalis, was screened and developed through the Systemic Evolution of Ligands by Exponential Energy (SELEX) method. Modified-Western blot analysis was performed with the aptamer which consisted of 38 single-stranded DNA to confirm the selectivity. ELONA (enzyme linked oligonucleotide assay) used to confirm that the aptamer was sensitive to PGP even at low concentration of 1 μg/ml. For the rapid detection of P. gingivalis, we constructed a surface plasmon resonance biosensor with SPREETA using the PGP aptamer. It was confirmed that PGP could be detected as low concentration as at 0.1 pM, which is the minimum concentration of aptamer sensor within 5 min. Based on these results, we have constructed a SPREETA biosensor based on aptamer that can bind to P. gingivalis G-protein. It can be used as an infection diagnosis system to rapidly diagnose and analyze oral diseases caused by P. gingivalis.
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Affiliation(s)
- Suk-Gyun Park
- Department of Oral Microbiology, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Hyun Ju Lee
- Department of Cosmetic Science, Kwangju Women’s University, Gwangju 62396, Republic of Korea
| | - Taeksoo Ji
- School of Electronics and Computer Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Kyungbaek Kim
- School of Electronics and Computer Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Seung-Ho Ohk
- Department of Oral Microbiology, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea
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6
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Cornejo Ulloa P, van der Veen MH, Brandt BW, Buijs MJ, Krom BP. The effect of sex steroid hormones on the ecology of in vitro oral biofilms. Biofilm 2023; 6:100139. [PMID: 37621393 PMCID: PMC10447177 DOI: 10.1016/j.bioflm.2023.100139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 06/27/2023] [Accepted: 06/27/2023] [Indexed: 08/26/2023] Open
Abstract
Sex steroid hormones (SSH) such as oestrogen, progesterone and testosterone are cholesterol derived molecules that regulate various physiological processes. They are present in both blood and saliva, where they come in contact with oral tissues and oral microorganisms. Several studies have confirmed the effect of these hormones on different periodontal-disease-associated bacteria, using single-species models. Bacteria can metabolize SSH, use them as alternative for vitamin K and also use them to induce the expression of virulence factors. However, it is still unclear what the effects of SSH are on the oral microbiome. In this study, we investigated the effects of four SSH on commensal in vitro oral biofilms. Saliva-derived oral biofilms were grown in Mc Bain medium without serum or menadione using the Amsterdam Active-Attachment model. After initial attachment in absence of SSH, the biofilms were grown in medium containing either oestradiol, oestriol, progesterone or testosterone at a 100-fold physiological concentration. Menadione or ethanol were included as positive control and negative control, respectively. After 12 days with daily medium refreshments, biofilm formation, biofilm red fluorescence and microbial composition were determined. The supernatants were tested for proteolytic activity using the Fluorescence Resonance Energy Transfer Analysis (FRET). No significant differences were found in biofilm formation, red fluorescence or microbial composition in any of the tested groups. Samples grown in presence of progesterone and oestradiol showed proteolytic activity comparable to biofilms supplemented with menadione. In contrast, testosterone and oestriol showed a decreased proteolytic activity compared to biofilms grown in presence of menadione. None of the tested SSH had large effects on the ecology of in vitro oral biofilms, therefore a direct translation of our results into in vivo effects is not possible. Future experiments should include other host factors such as oral tissues, immune cells and combinations of SSH as present in saliva, in order to have a more accurate picture of the phenomena taking place in both males and females.
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Affiliation(s)
- Pilar Cornejo Ulloa
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, the Netherlands
| | - Monique H. van der Veen
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, the Netherlands
| | - Bernd W. Brandt
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, the Netherlands
| | - Mark J. Buijs
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, the Netherlands
| | - Bastiaan P. Krom
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, the Netherlands
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7
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Haugsten HR, Kristoffersen AK, Haug TM, Søland TM, Øvstebø R, Aass HCD, Enersen M, Galtung HK. Isolation, characterization, and fibroblast uptake of bacterial extracellular vesicles from Porphyromonas gingivalis strains. Microbiologyopen 2023; 12:e1388. [PMID: 37877660 PMCID: PMC10579780 DOI: 10.1002/mbo3.1388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 10/04/2023] [Accepted: 10/06/2023] [Indexed: 10/26/2023] Open
Abstract
Periodontitis is an inflammatory condition caused by bacteria and represents a serious health problem worldwide as the inflammation damages the supporting tissues of the teeth and may predispose to systemic diseases. Porphyromonas gingivalis is considered a keystone periodontal pathogen that releases bacterial extracellular vesicles (bEVs) containing virulence factors, such as gingipains, that may contribute to the pathogenesis of periodontitis. This study aimed to isolate and characterize bEVs from three strains of P. gingivalis, investigate putative bEV uptake into human oral fibroblasts, and determine the gingipain activity of the bEVs. bEVs from three bacterial strains, ATCC 33277, A7A1-28, and W83, were isolated through ultrafiltration and size-exclusion chromatography. Vesicle size distribution was measured by nano-tracking analysis (NTA). Transmission electron microscopy was used for bEV visualization. Flow cytometry was used to detect bEVs and gingipain activity was measured with an enzyme assay using a substrate specific for arg-gingipain. The uptake of bEVs into oral fibroblasts was visualized using confocal microscopy. NTA showed bEV concentrations from 108 to 1011 particles/mL and bEV diameters from 42 to 356 nm. TEM pictures demonstrated vesicle-like structures. bEV-gingipains were detected both by flow cytometry and enzyme assay. Fibroblasts incubated with bEVs labeled with fluorescent dye displayed intracellular localization consistent with bEV internalization. In conclusion, bEVs from P. gingivalis were successfully isolated and characterized, and their uptake into human oral fibroblasts was documented. The bEVs displayed active gingipains demonstrating their origin from P. gingivalis and the potential role of bEVs in periodontitis.
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Affiliation(s)
- Helene R. Haugsten
- Institute of Oral Biology, Faculty of DentistryUniversity of OsloOsloNorway
| | | | - Trude M. Haug
- Institute of Oral Biology, Faculty of DentistryUniversity of OsloOsloNorway
| | - Tine M. Søland
- Institute of Oral Biology, Faculty of DentistryUniversity of OsloOsloNorway
- Department of PathologyOslo University HospitalOsloNorway
| | - Reidun Øvstebø
- The Blood Cell Research Group, Department of Medical BiochemistryOslo University HospitalUllevålNorway
| | - Hans C. D. Aass
- The Blood Cell Research Group, Department of Medical BiochemistryOslo University HospitalUllevålNorway
| | - Morten Enersen
- Institute of Oral Biology, Faculty of DentistryUniversity of OsloOsloNorway
| | - Hilde K. Galtung
- Institute of Oral Biology, Faculty of DentistryUniversity of OsloOsloNorway
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8
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Jin Z, Ling C, Yim W, Chang YC, He T, Li K, Zhou J, Cheng Y, Li Y, Yeung J, Wang R, Fajtová P, Amer L, Mattoussi H, O'Donoghue AJ, Jokerst JV. Endoproteolysis of Oligopeptide-Based Coacervates for Enzymatic Modeling. ACS NANO 2023; 17:16980-16992. [PMID: 37579082 PMCID: PMC10614163 DOI: 10.1021/acsnano.3c04259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
Better insights into the fate of membraneless organelles could strengthen the understanding of the transition from prebiotic components to multicellular organisms. Compartmentalized enzyme reactions in a synthetic coacervate have been investigated, yet there remains a gap in understanding the enzyme interactions with coacervate as a substrate hub. Here, we study how the molecularly crowded nature of the coacervate affects the interactions of the embedded substrate with a protease. We design oligopeptide-based coacervates that comprise an anionic Asp-peptide (D10) and a cationic Arg-peptide (R5R5) with a proteolytic cleavage site. The coacervates dissolve in the presence of the main protease (Mpro) implicated in the coronavirus lifecycle. We capitalize on the condensed structure, introduce a self-quenching mechanism, and model the enzyme kinetics by using Cy5.5-labeled peptides. The determined specificity constant (kcat/KM) is 5817 M-1 s-1 and is similar to that of the free substrate. We further show that the enzyme kinetics depend on the type and quantity of dye incorporated into the coacervates. Our work presents a simple design for enzyme-responsive coacervates and provides insights into the interactions between the enzyme and coacervates as a whole.
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Affiliation(s)
- Zhicheng Jin
- Department of NanoEngineering, University of California, San Diego, La Jolla 92093, California, United States
| | - Chuxuan Ling
- Department of NanoEngineering, University of California, San Diego, La Jolla 92093, California, United States
| | - Wonjun Yim
- Materials Science and Engineering Program, University of California, San Diego, La Jolla 92093, California, United States
| | - Yu-Ci Chang
- Materials Science and Engineering Program, University of California, San Diego, La Jolla 92093, California, United States
| | - Tengyu He
- Materials Science and Engineering Program, University of California, San Diego, La Jolla 92093, California, United States
| | - Ke Li
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis #08-03, Singapore 138634, Republic of Singapore
| | - Jiajing Zhou
- Department of NanoEngineering, University of California, San Diego, La Jolla 92093, California, United States
| | - Yong Cheng
- Department of NanoEngineering, University of California, San Diego, La Jolla 92093, California, United States
| | - Yi Li
- Department of NanoEngineering, University of California, San Diego, La Jolla 92093, California, United States
| | - Justin Yeung
- Department of Bioengineering, University of California, San Diego, La Jolla 92093, California, United States
| | - Ruijia Wang
- Department of Pediatrics, School of Medicine, University of California, San Diego, La Jolla 92093, California, United States
| | - Pavla Fajtová
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla 92093, California, United States
| | - Lubna Amer
- Materials Science and Engineering Program, University of California, San Diego, La Jolla 92093, California, United States
| | - Hedi Mattoussi
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee 32306, Florida, United States
| | - Anthony J O'Donoghue
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla 92093, California, United States
| | - Jesse V Jokerst
- Department of NanoEngineering, University of California, San Diego, La Jolla 92093, California, United States
- Materials Science and Engineering Program, University of California, San Diego, La Jolla 92093, California, United States
- Department of Radiology, University of California, San Diego, La Jolla 92093, California, United States
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9
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Claesson R, Johansson A, Belibasakis GN. Age-Related Subgingival Colonization of Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis and Parvimonas micra-A Pragmatic Microbiological Retrospective Report. Microorganisms 2023; 11:1434. [PMID: 37374936 DOI: 10.3390/microorganisms11061434] [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: 03/27/2023] [Revised: 05/25/2023] [Accepted: 05/27/2023] [Indexed: 06/29/2023] Open
Abstract
The aim of this study was to compare data about the prevalence and proportions of the bacterial species Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, and Parvimonas micra in periodontitis pocket samples collected from young, <35 years, and old, >35-year-old patients, YP and OP, respectively. The results from the analyses of a total of 3447 subgingival plaque samples analyzed for clinical diagnosis purposes by cultivation regarding the proportions of these species were collected from a database and elucidated. The prevalence of A. actinomycetemcomitans was found to be more than twice as high (OR = 2.96, 95% CI; 2.50-3.50) in samples from the younger (42.2%) than the older group (20.4%) (p < 0.001). The prevalence of P. micra was significantly lower in samples from the younger age group (OR = 0.43, 95%) (p < 0.001), whereas P. gingivalis was similarly distributed (OR = 0.78, 95%) in the two age groups (p = 0.006). A similar pattern was noticed for A. actinomycetemcomitans and P. gingivalis when high proportions (>50%) of the samples of these bacterial species were elucidated. In contrast, the proportion of samples containing >50% with P. micra was lower compared with the two other bacterial species. Furthermore, it was noted that the proportion of samples from old patients containing A. actinomycetemcomitans in combination with P. micra was almost three times higher than in samples when P. micra was replaced by P. gingivalis. In conclusion, A.actinomycetemcomitans showed an increased presence and proportion in samples from young patients compared with the old patients, while P. gingivalis was similarly distributed in the two age groups. P. micra showed an increased presence and proportion in samples from old patients compared with the young patients.
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Affiliation(s)
- Rolf Claesson
- Department of Odontology, Umeå University, 901 87 Umeå, Sweden
| | | | - Georgios N Belibasakis
- Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, 14152 Huddinge, Sweden
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10
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Jin Z, Yeung J, Zhou J, Retout M, Yim W, Fajtová P, Gosselin B, Jabin I, Bruylants G, Mattoussi H, O'Donoghue AJ, Jokerst JV. Empirical Optimization of Peptide Sequence and Nanoparticle Colloidal Stability: The Impact of Surface Ligands and Implications for Colorimetric Sensing. ACS APPLIED MATERIALS & INTERFACES 2023; 15:20483-20494. [PMID: 37058597 PMCID: PMC10614165 DOI: 10.1021/acsami.3c00862] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Surface ligands play a critical role in controlling and defining the properties of colloidal nanocrystals. These aspects have been exploited to design nanoparticle aggregation-based colorimetric sensors. Here, we coated 13-nm gold nanoparticles (AuNPs) with a large library of ligands (e.g., from labile monodentate monomers to multicoordinating macromolecules) and evaluated their aggregation propensity in the presence of three peptides containing charged, thiolate, or aromatic amino acids. Our results show that AuNPs coated with the polyphenols and sulfonated phosphine ligands were good choices for electrostatic-based aggregation. AuNPs capped with citrate and labile-binding polymers worked well for dithiol-bridging and π-π stacking-induced aggregation. In the example of electrostatic-based assays, we stress that good sensing performance requires aggregating peptides of low charge valence paired with charged NPs with weak stability and vice versa. We then present a modular peptide containing versatile aggregating residues to agglomerate a variety of ligated AuNPs for colorimetric detection of the coronavirus main protease. Enzymatic cleavage liberates the peptide segment, which in turn triggers NP agglomeration and thus rapid color changes in <10 min. The protease detection limit is 2.5 nM.
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Affiliation(s)
- Zhicheng Jin
- Department of NanoEngineering, University of California, San Diego, La Jolla, California 92093, United States
| | - Justin Yeung
- Department of Bioengineering, University of California San Diego, La Jolla, California 92093, United States
| | - Jiajing Zhou
- Department of NanoEngineering, University of California, San Diego, La Jolla, California 92093, United States
| | - Maurice Retout
- Department of NanoEngineering, University of California, San Diego, La Jolla, California 92093, United States
| | - Wonjun Yim
- Materials Science and Engineering Program, University of California, San Diego, La Jolla, California 92093, United States
| | - Pavla Fajtová
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, California 92093, United States
| | - Bryan Gosselin
- Laboratoire de Chimie Organique, Université libre de Bruxelles (ULB), avenue F. D. Roosevel 50, CP160/06, B-1050 Brussels, Belgium
- Engineering of Molecular NanoSystems, Ecole Polytechnique de Bruxelles, Université libre de Bruxelles (ULB), avenue F. D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium
| | - Ivan Jabin
- Laboratoire de Chimie Organique, Université libre de Bruxelles (ULB), avenue F. D. Roosevel 50, CP160/06, B-1050 Brussels, Belgium
| | - Gilles Bruylants
- Engineering of Molecular NanoSystems, Ecole Polytechnique de Bruxelles, Université libre de Bruxelles (ULB), avenue F. D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium
| | - Hedi Mattoussi
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Anthony J O'Donoghue
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, California 92093, United States
| | - Jesse V Jokerst
- Department of NanoEngineering, University of California, San Diego, La Jolla, California 92093, United States
- Materials Science and Engineering Program, University of California, San Diego, La Jolla, California 92093, United States
- Department of Radiology, University of California, San Diego, La Jolla, California 92093, United States
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11
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Bostanci N, Belibasakis GN. Precision periodontal care: from omics discoveries to chairside diagnostics. Clin Oral Investig 2023; 27:971-978. [PMID: 36723713 PMCID: PMC9985578 DOI: 10.1007/s00784-023-04878-7] [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: 08/18/2022] [Accepted: 01/22/2023] [Indexed: 02/02/2023]
Abstract
The interface of molecular science and technology is guiding the transformation of personalized to precision healthcare. The application of proteomics, genomics, transcriptomics, and metabolomics is shaping the suitability of biomarkers for disease. Prior validation of such biomarkers in large and diverse patient cohorts helps verify their clinical usability. Incorporation of molecular discoveries into routine clinical practice relies on the development of customized assays and devices that enable the rapid delivery of analytical data to the clinician, while the patient is still in session. The present perspective review addresses this topic under the prism of precision periodontal care. Selected promising research attempts to innovate technological platforms for oral diagnostics are brought forward. Focus is placed on (a) the suitability of saliva as a conveniently sampled biological specimen for assessing periodontal health, (b) proteomics as a high-throughput approach for periodontal disease biomarker identification, and (c) chairside molecular diagnostic assays as a technological funnel for transitioning from the laboratory benchtop to the clinical point-of-care.
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Affiliation(s)
- Nagihan Bostanci
- Section of Oral Health and Periodontology, Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Alfred Nobels alle 8, 141 52, Huddinge, Stockholm, Sweden.
| | - Georgios N Belibasakis
- Section of Oral Health and Periodontology, Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Alfred Nobels alle 8, 141 52, Huddinge, Stockholm, Sweden.
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12
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Moore C, Cheng Y, Tjokro N, Zhang B, Kerr M, Hayati M, Chang KCJ, Shah N, Chen C, Jokerst JV. A Photoacoustic-Fluorescent Imaging Probe for Proteolytic Gingipains Expressed by Porphyromonas gingivalis. Angew Chem Int Ed Engl 2022; 61:e202201843. [PMID: 35583940 PMCID: PMC9296565 DOI: 10.1002/anie.202201843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Indexed: 11/07/2022]
Abstract
Porphyromonas gingivalis is a keystone pathogen in periodontal disease. We herein report a dual-modal fluorescent and photoacoustic imaging probe for the detection of gingipain proteases secreted by P. gingivalis. Upon proteolytic cleavage by Arg-specific gingipain (RgpB), five-fold photoacoustic enhancement and >100-fold fluorescence activation was measured with detection limits of 1.1 nM RgpB and 5.0E4 CFU mL-1 bacteria in vitro. RgpB activity was imaged in porcine jaws with low-nanomolar sensitivity. Diagnostic efficacy was evaluated in gingival crevicular fluid samples from subjects with and without periodontal disease, wherein activation was correlated to qPCR-based detection of P. gingivalis (Pearson's r=0.71). Finally, photoacoustic imaging of RgpB-cleaved probe was achieved in murine brains ex vivo, with relevance and potential utility for disease models of general infection by P. gingivalis, motivated by the recent biological link between gingipain and Alzheimer's disease.
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Affiliation(s)
- Colman Moore
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093. USA
| | - Yong Cheng
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093. USA
| | - Natalia Tjokro
- Herman Ostrow School of Dentistry, University of Southern California, 925 West 34 Street, Los Angeles, CA 90089. USA
| | - Brendan Zhang
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093. USA
| | - Matthew Kerr
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093. USA
| | - Mohammed Hayati
- Herman Ostrow School of Dentistry, University of Southern California, 925 West 34 Street, Los Angeles, CA 90089. USA
| | - Kai Chiao Joe Chang
- Herman Ostrow School of Dentistry, University of Southern California, 925 West 34 Street, Los Angeles, CA 90089. USA
| | - Nisarg Shah
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093. USA
| | - Casey Chen
- Herman Ostrow School of Dentistry, University of Southern California, 925 West 34 Street, Los Angeles, CA 90089. USA
| | - Jesse V. Jokerst
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093. USA
- Materials Science Program, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093. USA
- Department of Radiology, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093. USA
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13
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Moore C, Cheng Y, Tjokro N, Zhang B, Kerr M, Hayati M, Chang KCJ, Shah N, Chen C, Jokerst JV. A Photoacoustic‐Fluorescent Imaging Probe for Proteolytic Gingipains Expressed by
Porphyromonas gingivalis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Colman Moore
- Department of NanoEngineering University of California, San Diego 9500 Gilman Dr. La Jolla CA 92093 USA
| | - Yong Cheng
- Department of NanoEngineering University of California, San Diego 9500 Gilman Dr. La Jolla CA 92093 USA
| | - Natalia Tjokro
- Herman Ostrow School of Dentistry University of Southern California 925 West 34th Street Los Angeles CA 90089 USA
| | - Brendan Zhang
- Department of NanoEngineering University of California, San Diego 9500 Gilman Dr. La Jolla CA 92093 USA
- Current address: Diazyme Laboratories Inc
| | - Matthew Kerr
- Department of NanoEngineering University of California, San Diego 9500 Gilman Dr. La Jolla CA 92093 USA
| | - Mohammed Hayati
- Herman Ostrow School of Dentistry University of Southern California 925 West 34th Street Los Angeles CA 90089 USA
| | - Kai Chiao Joe Chang
- Herman Ostrow School of Dentistry University of Southern California 925 West 34th Street Los Angeles CA 90089 USA
| | - Nisarg Shah
- Department of NanoEngineering University of California, San Diego 9500 Gilman Dr. La Jolla CA 92093 USA
| | - Casey Chen
- Herman Ostrow School of Dentistry University of Southern California 925 West 34th Street Los Angeles CA 90089 USA
| | - Jesse V. Jokerst
- Department of NanoEngineering University of California, San Diego 9500 Gilman Dr. La Jolla CA 92093 USA
- Materials Science Program University of California, San Diego 9500 Gilman Dr. La Jolla CA 92093 USA
- Department of Radiology University of California, San Diego 9500 Gilman Dr. La Jolla CA 92093 USA
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14
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Salivary Assessments in Post-Liver Transplantation Patients. J Clin Med 2022; 11:jcm11113152. [PMID: 35683539 PMCID: PMC9181838 DOI: 10.3390/jcm11113152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/29/2022] [Accepted: 05/30/2022] [Indexed: 02/04/2023] Open
Abstract
Saliva is in the first line of the body's defense mechanism. In order to better understand how liver transplantation impacts salivary biochemistry, the aim of this cross-sectional study was to explore variations of salivary markers for oral health in post-liver transplantation patients, as compared with systemically healthy dental outpatients (controls). In this case, 26 patients were enrolled in each group, with similar socio-demographic characteristics. Unstimulated whole saliva was collected; total protease activity and total protein content were measured. The oral health in both groups was assessed using a self-report oral health questionnaire. Data were analyzed using parametric and nonparametric tests. Comparable results were recorded in terms of salivary protein and protease activity assessments. In post-liver transplantation group, positive correlation was found between the salivary pH level and the salivary secretion rate (r = 0.39; p = 0.04). With respect to self-reported oral health, there were no significant differences between the two groups, except for dental and oral care habits, the controls reporting more frequently use of dental floss and mouthwash (p = 0.02, and p = 0.003, respectively). Considering the high risk for developing systemic complications after liver transplantation, oral health care is an important issue to be addressed, salivary investigations representing powerful tool for disease changes monitoring.
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15
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Ge D, Wang F, Hu Y, Wang B, Gao X, Chen Z. Fast, Simple, and Highly Specific Molecular Detection of Porphyromonas gingivalis Using Isothermal Amplification and Lateral Flow Strip Methods. Front Cell Infect Microbiol 2022; 12:895261. [PMID: 35694545 PMCID: PMC9174636 DOI: 10.3389/fcimb.2022.895261] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 04/27/2022] [Indexed: 12/16/2022] Open
Abstract
Porphyromonas gingivalis is an important oral pathogen that causes periodontal disease and is difficult to culture under conventional conditions. Therefore, a reliable technique for detecting this pathogenic bacterium is required. Here, isothermal recombinase polymerase amplification (RPA), a new nucleic acid amplification method, was combined with a visualization method based on nanoparticle-based lateral flow strips (LFS) for the rapid detection of P. gingivalis. The species-specific 16S rRNA sequence of P. gingivalis was used as the target for RPA, and a set of specific primer–probe combinations were designed and screened to amplify the target sequences. As a thermostatic amplification method, the RPA reaction, under optimized conditions, takes only 30 min to complete at a constant temperature (37°C). The amplification reaction products can be detected visually by LFS without any need for special equipment. The RPA-LFS method established for the detection of P. gingivalis was shown to be highly specific in distinguishing P. gingivalis from other pathogenic organisms by using 20 clinical isolates of P. gingivalis and 23 common pathogenic microorganisms. Susceptibility measurements and probit regression analysis were performed with gradient dilutions of P. gingivalis genomic DNA. The method was obtained to be highly sensitive, with a detection limit of 9.27 CFU per reaction at 95% probability. By analyzing the gingival sulcus fluid specimens from 130 patients with chronic periodontitis, the results showed that the RPA-LFS method detected 118 positive cases and 12 negative cases of P. gingivalis, and the results obtained were consistent with those of a conventional PCR assay. The RPA–LFS method is an efficient, rapid, and convenient diagnostic method that simplifies the tedious process of detecting P. gingivalis.
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Affiliation(s)
| | | | | | | | - Xuzhu Gao
- *Correspondence: Zhenxing Chen, ; Xuzhu Gao,
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16
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Jin Z, Mantri Y, Retout M, Cheng Y, Zhou J, Jorns A, Fajtova P, Yim W, Moore C, Xu M, Creyer MN, Borum RM, Zhou J, Wu Z, He T, Penny WF, O’Donoghue A, Jokerst JV. A Charge-Switchable Zwitterionic Peptide for Rapid Detection of SARS-CoV-2 Main Protease. Angew Chem Int Ed Engl 2022; 61:e202112995. [PMID: 34936725 PMCID: PMC8854333 DOI: 10.1002/anie.202112995] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Indexed: 11/06/2022]
Abstract
The transmission of SARS-CoV-2 coronavirus has led to the COVID-19 pandemic. Nucleic acid testing while specific has limitations for mass surveillance. One alternative is the main protease (Mpro ) due to its functional importance in mediating the viral life cycle. Here, we describe a combination of modular substrate and gold colloids to detect Mpro via visual readout. The strategy involves zwitterionic peptide that carries opposite charges at the C-/N-terminus to exploit the specific recognition by Mpro . Autolytic cleavage releases a positively charged moiety that assembles the nanoparticles with rapid color changes (t<10 min). We determine a limit of detection for Mpro in breath condensate matrices <10 nM. We further assayed ten COVID-negative subjects and found no false-positive result. In the light of simplicity, our test for viral protease is not limited to an equipped laboratory, but also is amenable to integrating as portable point-of-care devices including those on face-coverings.
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Affiliation(s)
- Zhicheng Jin
- Department of NanoEngineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Yash Mantri
- Department of Bioengineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA
| | - Maurice Retout
- Department of NanoEngineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Yong Cheng
- Department of NanoEngineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Jiajing Zhou
- Department of NanoEngineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Alec Jorns
- Department of NanoEngineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Pavla Fajtova
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA
| | - Wonjun Yim
- Materials Science and Engineering Program, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA
| | - Colman Moore
- Department of NanoEngineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Ming Xu
- Department of NanoEngineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Matthew N. Creyer
- Department of NanoEngineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Raina M. Borum
- Department of NanoEngineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Jingcheng Zhou
- Department of NanoEngineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Zhuohong Wu
- Department of NanoEngineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Tengyu He
- Materials Science and Engineering Program, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA
| | - William F. Penny
- Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA
| | - Anthony O’Donoghue
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA
| | - Jesse V. Jokerst
- Department of NanoEngineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
- Materials Science and Engineering Program, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA
- Department of Radiology, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA
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17
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Jin Z, Mantri Y, Retout M, Cheng Y, Zhou J, Jorns A, Fajtova P, Yim W, Moore C, Xu M, Creyer MN, Borum RM, Zhou J, Wu Z, He T, Penny WF, O'Donoghue AJ, Jokerst JV. A Charge‐Switchable Zwitterionic Peptide for Rapid Detection of SARS‐CoV‐2 Main Protease. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Zhicheng Jin
- Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA
| | - Yash Mantri
- Department of Bioengineering University of California San Diego 9500 Gilman Drive La Jolla California 92093 USA
| | - Maurice Retout
- Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA
| | - Yong Cheng
- Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA
| | - Jiajing Zhou
- Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA
| | - Alec Jorns
- Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA
| | - Pavla Fajtova
- Skaggs School of Pharmacy and Pharmaceutical Sciences University of California San Diego 9500 Gilman Drive La Jolla California 92093 USA
| | - Wonjun Yim
- Materials Science and Engineering Program University of California San Diego 9500 Gilman Drive La Jolla California 92093 USA
| | - Colman Moore
- Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA
| | - Ming Xu
- Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA
| | - Matthew N. Creyer
- Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA
| | - Raina M. Borum
- Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA
| | - Jingcheng Zhou
- Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA
| | - Zhuohong Wu
- Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA
| | - Tengyu He
- Materials Science and Engineering Program University of California San Diego 9500 Gilman Drive La Jolla California 92093 USA
| | - William F. Penny
- Department of Medicine University of California San Diego 9500 Gilman Drive La Jolla California 92093 USA
| | - Anthony J. O'Donoghue
- Skaggs School of Pharmacy and Pharmaceutical Sciences University of California San Diego 9500 Gilman Drive La Jolla California 92093 USA
| | - Jesse V. Jokerst
- Department of NanoEngineering University of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA
- Materials Science and Engineering Program University of California San Diego 9500 Gilman Drive La Jolla California 92093 USA
- Department of Radiology University of California San Diego 9500 Gilman Drive La Jolla California 92093 USA
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18
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Park S, Park K, Na HS, Chung J, Yang H. Washing- and Separation-Free Electrochemical Detection of Porphyromonas gingivalis in Saliva for Initial Diagnosis of Periodontitis. Anal Chem 2021; 93:5644-5650. [PMID: 33770438 DOI: 10.1021/acs.analchem.1c00572] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Indirect detection of Porphyromonas gingivalis in saliva, based on proteolytic cleavage by an Arg-specific gingipain (Arg-gingipain), has traditionally been used for simple, initial diagnosis of periodontitis. To accurately detect P. gingivalis using a point-of-care format, development of a simple biosensor that can measure the exact concentration of P. gingivalis is required. However, electrochemical detection in saliva is challenging due to the presence of various interfering electroactive species in different concentrations. Here, we report a washing- and separation-free electrochemical biosensor for sensitive detection of P. gingivalis in saliva. Glycine-proline-arginine conjugated with 4-aminophenol (AP) was used as an electrochemical substrate for a trypsin-like Arg-gingipain, and glycylglycine was used to increase the Arg-gingipain activity. The electrochemical signal of AP was increased using electrochemical-chemical (EC) redox cycling involving an electrode, AP, and tris(2-carboxyethyl)phosphine, and the electrochemical charge signal was corrected using the initial charge obtained before a 15 min incubation period. The EC redox cycling combined with the matrix-corrected signal facilitated a high and reproducible signal without requiring washing and separation steps. The proteolytic cleavage of the electrochemical substrate was specific to P. gingivalis. The calculated detection limit for P. gingivalis in artificial saliva was 5 × 105 colony-forming units/mL, and the concentration of P. gingivalis in human saliva could be measured. The developed biosensor can be used as an initial diagnosis method to distinguish between healthy people and patients with periodontal diseases.
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Affiliation(s)
- Seonhwa Park
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Kiryeon Park
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Hee Sam Na
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Gyeongsangnam-do 50612, Korea
| | - Jin Chung
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Gyeongsangnam-do 50612, Korea
| | - Haesik Yang
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
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19
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Liu H, Huang L, Cai Y, Bikker FJ, Wei X, Mei Deng D. A novel gingipain regulatory gene in Porphyromonas gingivalis mediates host cell detachment and inhibition of wound closure. Microbiologyopen 2020; 9:e1128. [PMID: 33047890 PMCID: PMC7755767 DOI: 10.1002/mbo3.1128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 09/14/2020] [Accepted: 09/18/2020] [Indexed: 11/09/2022] Open
Abstract
The black pigmentation-related genes in Porphyromonas gingivalis are primarily involved in regulating gingipain functions. In this study, we identified a pigmentation-related gene, designated as pgn_0361. To characterize the role of pgn_0361 in regulating P. gingivalis-mediated epithelial cell detachment and inhibition of wound closure, PgΔ0361, an isogenic pgn_0361-defective mutant strain, and PgΔ0361C, a complementation strain, were constructed using P. gingivalis ATCC 33277. The gingipain and hemagglutination activities, as well as biofilm formation, were examined in all three strains. The effect of P. gingivalis strains on epithelial cell detachment was investigated using the HO-1-N-1 and Ca9-22 epithelial cell lines. The inhibition of wound closure by heat-killed P. gingivalis cells and culture supernatant was analyzed using an in vitro wound closure assay. Compared to the wild-type strain, the PgΔ0361 strain did not exhibit gingipain or hemagglutination activity but exhibited enhanced biofilm formation. Additionally, the PgΔ0361 strain exhibited attenuated ability to detach the epithelial cells and to inhibit wound closure in vitro. Contrastingly, the culture supernatant of PgΔ0361 exhibited high gingipain activity and strong inhibition of wound closure. The characteristics of PgΔ0361C and wild-type strains were comparable. In conclusion, the pgn_0361 gene is involved in regulating gingipains. The PGN_0361-defective strain exhibited reduced virulence in terms of epithelial cell detachment and inhibition of wound closure. The culture supernatant of the mutant strain highly inhibited wound closure, which may be due to high gingipain activity.
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Affiliation(s)
- Hongyan Liu
- Department of Operative Dentistry and Endodontics, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Province Key Laboratory of Stomatology, Guangzhou, China
| | - Lijia Huang
- Department of Operative Dentistry and Endodontics, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Province Key Laboratory of Stomatology, Guangzhou, China
| | - Yanling Cai
- Department of Operative Dentistry and Endodontics, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Province Key Laboratory of Stomatology, Guangzhou, China
| | - Floris J Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, Free University and University of Amsterdam, Amsterdam, The Netherlands
| | - Xi Wei
- Department of Operative Dentistry and Endodontics, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Province Key Laboratory of Stomatology, Guangzhou, China
| | - Dong Mei Deng
- Department of Operative Dentistry and Endodontics, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Province Key Laboratory of Stomatology, Guangzhou, China
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20
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Gürsoy UK, Fteita D, Bikker FJ, Grande MA, Nazmi K, Gürsoy M, Könönen E, Belstrøm D. Elevated Baseline Salivary Protease Activity May Predict the Steadiness of Gingival Inflammation During Periodontal Healing: A 12-Week Follow-Up Study on Adults. Pathogens 2020; 9:pathogens9090751. [PMID: 32942694 PMCID: PMC7558121 DOI: 10.3390/pathogens9090751] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/08/2020] [Accepted: 09/11/2020] [Indexed: 12/26/2022] Open
Abstract
Aim was to profile salivary total protease, Porphyromonas gingivalis gingipain, and neutrophil elastase activities in relation to the resolution of periodontal inflammation, salivary macrophage-derived chemokine (MDC), and macrophage inflammatory protein-1α concentrations. Nonsurgical periodontal treatment was performed in 24 periodontitis patients in a prospective interventional study design. Periodontal clinical parameters were recorded, and stimulated saliva samples were collected at baseline and 2, 6, and 12 weeks after treatment. Salivary total protease and gingipain activities were determined using fluorogenic substrates, elastase activity by chromogenic substrates, and cytokine concentrations by Luminex immunoassay. For statistical analyses, generalized linear mixed models for repeated measures were used. Salivary total protease activity elevated, while gingival inflammation and plaque accumulation decreased 2 and 6 weeks after periodontal therapy. Salivary MDC concentration was elevated 12 weeks after periodontal treatment. Patients with elevated protease activities at baseline in comparison to patients with low baseline total protease activities, had higher levels of gingival inflammation before and after periodontal treatment. In conclusion, elevations in salivary total protease activity seem to be part of periodontal healing at its early phases. Higher levels of salivary total protease activities before periodontal treatment may predict the severity and steadiness of unresolved gingival inflammation.
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Affiliation(s)
- Ulvi Kahraman Gürsoy
- Department of Periodontology, Institute of Dentistry, University of Turku, 20520 Turku, Finland; (D.F.); (M.G.); (E.K.)
- Correspondence:
| | - Dareen Fteita
- Department of Periodontology, Institute of Dentistry, University of Turku, 20520 Turku, Finland; (D.F.); (M.G.); (E.K.)
| | - Floris J. Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, Free University and University of Amsterdam, 1081LA Amsterdam, The Netherlands; (F.J.B.); (K.N.)
| | - Maria Anastasia Grande
- Section for Clinical Oral Microbiology, Periodontology, Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark; (M.A.G.); (D.B.)
| | - Kamran Nazmi
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, Free University and University of Amsterdam, 1081LA Amsterdam, The Netherlands; (F.J.B.); (K.N.)
| | - Mervi Gürsoy
- Department of Periodontology, Institute of Dentistry, University of Turku, 20520 Turku, Finland; (D.F.); (M.G.); (E.K.)
| | - Eija Könönen
- Department of Periodontology, Institute of Dentistry, University of Turku, 20520 Turku, Finland; (D.F.); (M.G.); (E.K.)
| | - Daniel Belstrøm
- Section for Clinical Oral Microbiology, Periodontology, Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark; (M.A.G.); (D.B.)
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21
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Bikker FJ, Nascimento GG, Nazmi K, Silbereisen A, Belibasakis GN, Kaman WE, Lopez R, Bostanci N. Salivary Total Protease Activity Based on a Broad-Spectrum Fluorescence Resonance Energy Transfer Approach to Monitor Induction and Resolution of Gingival Inflammation. Mol Diagn Ther 2020; 23:667-676. [PMID: 31372941 PMCID: PMC6775538 DOI: 10.1007/s40291-019-00421-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Salivary total protease and chitinase activities were measured by a broad-spectrum fluorescence resonance energy transfer approach as predictors of induction and resolution of gingival inflammation in healthy individuals by applying an experimental human gingivitis model. METHODS Dental biofilm accumulated (21 days, Induction Phase) by omitting oral hygiene practices followed by a 2-week Resolution Phase to restore gingival health in an experimental gingivitis study. Plaque accumulation, as assessed by the Turesky Modification of the Quigley-Hein Plaque Index (TQHPI), and gingival inflammation, assessed using the Modified Gingival Index (MGI), scores were recorded and unstimulated saliva was collected weekly. Saliva was analysed for total protein, albumin, total protease activity and chitinase activity (n = 18). RESULTS The TQHPI and MGI scores, as well as total protease activity, increased until day 21. After re-establishment of oral hygiene, gingival inflammation levels returned to values similar to baseline (day 0). Levels of protease activity decreased significantly, but not to baseline values. Furthermore, 'fast' responders, who responded immediately to plaque, exhibited significantly higher proteolytic activity throughout the experimental course than 'slow' responders, who showed a lagged inflammatory response. CONCLUSION The results indicate that differential inflammatory responses encompass inherent variations in total salivary proteolytic activities, which could be further utilised in contemporary diagnostic, prognostic and treatment modalities for periodontal diseases.
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Affiliation(s)
- Floris J Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), Free University of Amsterdam and University of Amsterdam, Amsterdam, The Netherlands.
| | - Gustavo G Nascimento
- Section of Periodontology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Kamran Nazmi
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), Free University of Amsterdam and University of Amsterdam, Amsterdam, The Netherlands
| | - Angelika Silbereisen
- Section of Periodontology and Dental Prevention, Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Georgios N Belibasakis
- Section of Periodontology and Dental Prevention, Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Wendy E Kaman
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), Free University of Amsterdam and University of Amsterdam, Amsterdam, The Netherlands.,Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Rodrigo Lopez
- Section of Periodontology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Nagihan Bostanci
- Section of Periodontology and Dental Prevention, Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
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22
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Short-Chain N-Acylhomoserine Lactone Quorum-Sensing Molecules Promote Periodontal Pathogens in In Vitro Oral Biofilms. Appl Environ Microbiol 2020; 86:AEM.01941-19. [PMID: 31757829 DOI: 10.1128/aem.01941-19] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 11/11/2019] [Indexed: 12/14/2022] Open
Abstract
Acylhomoserine lactones (AHLs), the quorum-sensing (QS) signals produced by a range of Gram-negative bacteria, are involved in biofilm formation in many pathogenic and environmental bacteria. Nevertheless, the current paradigm excludes a role of AHLs in dental plaque formation, while other QS signals, such as AI-2 and autoinducer peptides, have been demonstrated to play an important role in biofilm formation and virulence-related gene expression in oral pathogens. In the present work, we have explored the effect of externally added AHLs on in vitro oral biofilm models for commensal, cariogenic, and periodontal dental plaque. While little effect on bacterial growth was observed, some AHLs specifically affected the lactic acid production and protease activity of the biofilms. Most importantly, the analysis of bacterial diversity in the biofilms showed that the addition of C6-homoserine lactone (C6-HSL) results in a shift toward a periodontal bacterial composition profile by increasing the relative presence of the orange-complex bacteria Peptostreptococcus and Prevotella These results point to a relevant role of AHL-mediated QS in dental plaque formation and might be involved in the development of dysbiosis, the mechanism of which should be further investigated. This finding potentially opens new opportunities for the prevention or treatment of the periodontal disease.IMPORTANCE Dental plaque is omnipresent in healthy oral cavities and part of our commensal microbial colonization. At the same time, dental plaque is the cause of the most common human diseases, caries and gum disease. Dental plaque consists of billions of microbes attached to the surface of your teeth. Communication among these microbes is pivotal for development of these complex communities yet poorly studied in dental plaque. In the present study, we show that a specific communication molecule induces changes within the community related to the development of gum disease. This finding suggests that interfering with microbial communication may represent an interesting novel strategy to prevent gum disease that should be further investigated.
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Özdemir M, Caglayan F, Bikker FJ, Pussinen P, Könönen E, Yamalik N, Gürsoy M, Fteita D, Nazmi K, Güncü GN, Pietiäinen M, Tolvanen M, Gürsoy UK. Gingival tissue human beta-defensin levels in relation to infection and inflammation. J Clin Periodontol 2020; 47:309-318. [PMID: 31799742 DOI: 10.1111/jcpe.13227] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 11/25/2019] [Accepted: 12/01/2019] [Indexed: 12/28/2022]
Abstract
AIM To profile gingival tissue levels of human beta-defensin (hBD)-2 and hBD-3 in relation to gingival inflammation, Th17-related cytokine concentrations, Porphyromonas gingivalis counts, and gingipain and total protease activities. MATERIALS AND METHODS Gingival tissue and subgingival plaque samples were collected from 21 periodontitis patients including 48 periodontal pocket sites with marginal, mild, or moderate to severe inflammation. hBD levels were determined by immunodetection, P. gingivalis counts with real-time polymerase chain reaction, protease activities with fluorogenic substrates, and cytokine concentrations with Luminex technique. Data were statistically analysed using Kruskal-Wallis and Mann-Whitney U tests and Spearman correlation coefficients. RESULTS Subgingival plaque counts of P. gingivalis (p = .001) and gingipain activity (p < .001), as well as interleukin (IL)-1β (p = .012), IL-10 (p = .024), IL-17A (p = .002), IL-17F (p = .006), and IL-23 (p = .036) concentrations were elevated in severely inflamed sites, whereas no change was observed in hBD-2 and hBD-3 levels. Negative correlations were found between protease activity and hBD-2 (p = .033) and hBD-3(p = .003) levels. CONCLUSIONS Shift in gingival inflammation from marginal to mild stage is related to elevations in subgingival plaque P. gingivalis counts and gingipain activity, but not to tissue hBD levels. Negative correlations between hBDs and total protease activity suggest the degradation of these antimicrobial peptides in progressed inflammation.
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Affiliation(s)
- Meltem Özdemir
- Department of Periodontology, Institute of Dentistry, University of Turku, Turku, Finland.,Department of Periodontology, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Feriha Caglayan
- Department of Periodontology, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Floris J Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, Free University and University of Amsterdam, Amsterdam, The Netherlands
| | - Pirkko Pussinen
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
| | - Eija Könönen
- Department of Periodontology, Institute of Dentistry, University of Turku, Turku, Finland.,Oral Health Care, Welfare Division, City of Turku, Turku, Finland
| | - Nermin Yamalik
- Department of Periodontology, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Mervi Gürsoy
- Department of Periodontology, Institute of Dentistry, University of Turku, Turku, Finland
| | - Dareen Fteita
- Department of Periodontology, Institute of Dentistry, University of Turku, Turku, Finland
| | - Kamran Nazmi
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, Free University and University of Amsterdam, Amsterdam, The Netherlands
| | - Güliz N Güncü
- Department of Periodontology, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Milla Pietiäinen
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
| | - Mimmi Tolvanen
- Department of Periodontology, Institute of Dentistry, University of Turku, Turku, Finland
| | - Ulvi Kahraman Gürsoy
- Department of Periodontology, Institute of Dentistry, University of Turku, Turku, Finland
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24
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Belibasakis GN, Bostanci N, Marsh PD, Zaura E. Applications of the oral microbiome in personalized dentistry. Arch Oral Biol 2019; 104:7-12. [PMID: 31153099 DOI: 10.1016/j.archoralbio.2019.05.023] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 04/15/2019] [Accepted: 05/21/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE In the era of personalized medicine, it is imperative that oral health is integrated into this concept. The oral cavity fosters a highly individualized microbiome that has evolved to promote oral health, and which exists in a dynamic balance with the host. Microecological changes to the biology of the mouth [e.g. in the host diet and lifestyle, or status of the immune system] may drive deleterious shifts in the composition or metabolic activity of the oral microbiome ['dysbiosis']. This review aims to explore how knowledge of the oral microbiome may be utilized for personalized dentistry at the point-of-care. DESIGN This is a comprehensive narrative review of the literature, summarizing the perspectives of the authors. RESULTS The huge increase in recent knowledge on the ecology and microbiology of the oral cavity generated by 'OMIC' technologies may indeed be clinically translated to support patient care, in terms of prevention, monitoring, risk classification or early diagnosis. The identified clinical applications may not only include dental caries and periodontal disease, but also dental implants and orthodontics. Population-based applications may include systemic health, pregnancy and elderly populations. CONCLUSIONS Applications of selected oral microbiome and host-related biochemical parameters [e.g. the saliva proteome] for personalized dentistry can be customized for different clinical applications or individual populations, at point-of-care hubs.
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Affiliation(s)
- Georgios N Belibasakis
- Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden.
| | - Nagihan Bostanci
- Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
| | - Philip D Marsh
- Department of Oral Biology, School of Dentistry, University of Leeds, UK
| | - Egija Zaura
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, the Netherlands
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25
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Neilands J, Davies JR, Bikker FJ, Svensäter G. Parvimonas micra stimulates expression of gingipains from Porphyromonas gingivalis in multi-species communities. Anaerobe 2019; 55:54-60. [DOI: 10.1016/j.anaerobe.2018.10.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 10/19/2018] [Accepted: 10/20/2018] [Indexed: 11/15/2022]
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26
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On site visual detection of Porphyromonas gingivalis related periodontitis by using a magnetic-nanobead based assay for gingipains protease biomarkers. Mikrochim Acta 2018; 185:149. [PMID: 29594603 DOI: 10.1007/s00604-018-2677-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 01/12/2018] [Indexed: 12/27/2022]
Abstract
Porphyromonas gingivalis (P. gingivalis) is a pathogen causing periodontitis. A rapid assay is described for the diagnosis of periodontal infections related to P. gingivalis. The method is making use of gingipains, a group of P. gingivalis specific proteases as a detection biomarker. Magnetic-nanobeads were labeled with gingipain-specific peptide substrates and immobilized on a gold biosensing platform via gold-thiol linkage. As a result of this, the color of the gold layer turns black. Upon cleavage of the immobilized substrates by gingipains, the magnetic-nanobeads-peptide fragments were attracted by a magnet so that the golden surface color becomes visible again. This assay is highly sensitive and specific. It is capable of detecting as little as 49 CFU·mL-1 of P. gingivalis within 30 s. Examination of periodontitis patients and healthy control saliva samples showed the potential of the assay. The simplicity and rapidity of the assay makes it an effective point-of-care device. Graphical abstract Schematic of the assay for the detection of P. gingivalis proteases as one of the promising biomarkers associated with periodontal diseases.
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27
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Janus MM, Volgenant CMC, Brandt BW, Buijs MJ, Keijser BJF, Crielaard W, Zaura E, Krom BP. Effect of erythritol on microbial ecology of in vitro gingivitis biofilms. J Oral Microbiol 2017; 9:1337477. [PMID: 28748040 PMCID: PMC5508376 DOI: 10.1080/20002297.2017.1337477] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Indexed: 01/01/2023] Open
Abstract
Gingivitis is one of the most common oral infections in humans. While sugar alcohols such as erythritol are suggested to have caries-preventive properties, it may also have beneficial effects in prevention of gingivitis by preventing maturation of oral biofilms. The aim of this study was to assess the effect of erythritol on the microbial ecology and the gingivitis phenotype of oral microcosms. Biofilms were inoculated with stimulated saliva from 20 healthy donors and grown in a gingivitis model in the continuous presence of 0 (control group), 5, and 10% erythritol. After 9 days of growth, biofilm formation, protease activity (gingivitis phenotype), and microbial profile analyses were performed. Biofilm growth was significantly reduced in the presence of erythritol, and this effect was dose dependent. Protease activity and the Shannon diversity index of the microbial profiles of the biofilms were significantly lower when erythritol was present. Microbial profile analysis revealed that presence of erythritol induced a compositional shift from periodontitis- and gingivitis-related taxa toward early colonizers. The results of this study suggest that erythritol suppresses maturation of the biofilms toward unhealthy composition. The gingivitis phenotype was suppressed and biofilm formation was reduced in the presence of erythritol. Therefore, it is concluded that erythritol may contribute to a healthy oral ecosystem in vitro.
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Affiliation(s)
- Marleen Marga Janus
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Top Institute Food and Nutrition, Wageningen, The Netherlands
| | - Catherine Minke Charlotte Volgenant
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Bernd Willem Brandt
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Top Institute Food and Nutrition, Wageningen, The Netherlands
| | - Mark Johannes Buijs
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Bart Jan Frederik Keijser
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Top Institute Food and Nutrition, Wageningen, The Netherlands.,Microbiology and Systems Biology, TNO Earth, Environmental and Life Sciences, Zeist, The Netherlands
| | - Wim Crielaard
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Top Institute Food and Nutrition, Wageningen, The Netherlands
| | - Egija Zaura
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Top Institute Food and Nutrition, Wageningen, The Netherlands
| | - Bastiaan Philip Krom
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Top Institute Food and Nutrition, Wageningen, The Netherlands
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28
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O'Brien-Simpson NM, Burgess K, Lenzo JC, Brammar GC, Darby IB, Reynolds EC. Rapid Chair-Side Test for Detection of Porphyromonas gingivalis. J Dent Res 2017; 96:618-625. [PMID: 28182517 DOI: 10.1177/0022034517691720] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Porphyromonas gingivalis is a keystone pathogen of chronic periodontitis, and its intraoral levels have been shown to predict disease progression (activity). An accurate and sensitive chair-side (point of care) test to determine disease activity is critical for early intervention and clinical management of disease. This study aimed to develop a rapid, chair-side, saliva-based detection of P. gingivalis. Monoclonal antibodies (mAbs) to the A1-adhesin domain of the P. gingivalis RgpA-Kgp proteinase-adhesin complex were screened by enzyme-linked immunosorbent assay and microbial flow cytometry, with 2 mAbs shown to recognize all laboratory and clinical strains tested, without significantly cross-reacting with other oral bacteria tested. With these mAbs, an immunochromatographic device was produced and shown in preclinical studies to detect, in inoculated saliva, all P. gingivalis laboratory strains and clinical isolates tested. The device was able to detect ≥1 × 105 P. gingivalis cells/mL. In a patient age- and sex-matched control clinical cohort, P. gingivalis levels in saliva-as measured by real-time polymerase chain reaction-positively correlated with P. gingivalis levels in subgingival plaque ( r = 0.819, P < 0.01) and clinical parameters of disease ( r = 0.633, P < 0.01). A positive device result strongly correlated with P. gingivalis levels >1 × 105 cells/mL in saliva ( r = 0.778, P < 0.001) and subgingival plaque ( r = 0.715, P < 0.001) with sensitivity, specificity, positive/negative predictive values, and accuracy levels of 95.0%, 93.3%, 90.5%, 96.6%, and 94.0%, respectively. The device result also positively correlated ( r = 0.695, P < 0.01) with disease severity as measured by probing depth. Detection of P. gingivalis in saliva was found to be rapid, taking 3 min from sample collection.
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Affiliation(s)
- N M O'Brien-Simpson
- 1 Oral Health Cooperative Research Centre, Melbourne Dental School, Bio21 Institute, The University of Melbourne, Victoria, Australia
| | - K Burgess
- 1 Oral Health Cooperative Research Centre, Melbourne Dental School, Bio21 Institute, The University of Melbourne, Victoria, Australia
| | - J C Lenzo
- 1 Oral Health Cooperative Research Centre, Melbourne Dental School, Bio21 Institute, The University of Melbourne, Victoria, Australia
| | - G C Brammar
- 1 Oral Health Cooperative Research Centre, Melbourne Dental School, Bio21 Institute, The University of Melbourne, Victoria, Australia
| | - I B Darby
- 1 Oral Health Cooperative Research Centre, Melbourne Dental School, Bio21 Institute, The University of Melbourne, Victoria, Australia
| | - E C Reynolds
- 1 Oral Health Cooperative Research Centre, Melbourne Dental School, Bio21 Institute, The University of Melbourne, Victoria, Australia
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29
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Janus MM, Crielaard W, Volgenant CMC, van der Veen MH, Brandt BW, Krom BP. Candida albicans alters the bacterial microbiome of early in vitro oral biofilms. J Oral Microbiol 2017; 9:1270613. [PMID: 28326152 PMCID: PMC5328388 DOI: 10.1080/20002297.2016.1270613] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 11/29/2016] [Accepted: 12/07/2016] [Indexed: 11/01/2022] Open
Abstract
The yeast Candida albicans is an oral commensal microorganism, occurring in the oral cavity of 50-70% of healthy individuals. Its effect on oral ecology has mostly been studied using dual-species models, which disregards the complex nature of oral biofilms. The aim of this study was to culture C. albicans in a complex model to study its effect on oral biofilms. Biofilms, inoculated using pooled stimulated saliva with or without addition of C. albicans, were grown under anaerobic, aerobic, or aerobic +5% CO2 conditions. Red autofluorescence was quantified using a spectrophotometer and visualized in fluorescence photographs. The microbiome of 5 h biofilms was determined using 16S rDNA sequencing. C. albicans was only able to proliferate in biofilms grown under aerobic conditions. After 48 h, C. albicans did not induce differences in total biofilm formation, lactic acid accumulation (cariogenic phenotype) or protease activity (periodontitis phenotype). In vitro, anaerobically grown biofilms developed red autofluorescence, irrespective of inoculum. However, under aerobic conditions, only C. albicans-containing biofilms showed red autofluorescence. Facultative or strict anaerobic Veillonella, Prevotella, Leptotrichia, and Fusobacterium genera were significantly more abundant in biofilms with C. albicans. Biofilms without C. albicans contained more of the aerobic and facultative anaerobic genera Neisseria, Rothia, and Streptococcus. The presence of C. albicans alters the bacterial microbiome in early in vitro oral biofilms, resulting in the presence of strictly anaerobic bacteria under oxygen-rich conditions. This in vitro study illustrates that C. albicans should not be disregarded in healthy oral ecosystems, as it has the potential to influence bacteria significantly.
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Affiliation(s)
- M M Janus
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands; Top Institute Food and Nutrition, Wageningen, The Netherlands
| | - W Crielaard
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands; Top Institute Food and Nutrition, Wageningen, The Netherlands
| | - C M C Volgenant
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam , Amsterdam , The Netherlands
| | - M H van der Veen
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam , Amsterdam , The Netherlands
| | - B W Brandt
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands; Top Institute Food and Nutrition, Wageningen, The Netherlands
| | - B P Krom
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands; Top Institute Food and Nutrition, Wageningen, The Netherlands
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30
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Neilands J, Bikker FJ, Kinnby B. PAI-2/SerpinB2 inhibits proteolytic activity in a P. gingivalis-dominated multispecies bacterial consortium. Arch Oral Biol 2016; 70:1-8. [PMID: 27295389 DOI: 10.1016/j.archoralbio.2016.05.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 04/19/2016] [Accepted: 05/25/2016] [Indexed: 01/24/2023]
Abstract
OBJECTIVE The aim of this study was to investigate the ability of the serine protease inhibitor plasminogen activator inhibitor type 2 (PAI-2/Serpin B2) to inhibit proteases produced by a multispecies bacterial consortium in vitro. BACKGROUND Gingival and periodontal inflammation is associated with an increased flow of protein-rich gingival fluid. This nutritional change in the microenvironment favors bacteria with a proteolytic phenotype, triggering inflammation and associated tissue breakdown. PAI-2 is produced by macrophages and keratinocytes and is present in very high concentrations in gingival crevicular fluid; the highest level in the body. DESIGN A multispecies bacterial consortium comprising nine bacterial strains, resembling the conditions in a periodontal pocket, was grown planktonically and as a biofilm. After seven days PAI-2 was added to the consortium and the proteolytic activity was assayed with fluorogenic protease substrates; FITC-labeled casein to detect global protease activity, fluorescent H-Gly-Pro-AMC for serine protease activity and fluorescent BIKKAM-10 for Porphyromonas gingivalis-associated protease activity. Protease activity associated with biofilm cells was examined by confocal scanning laser microscopy. RESULTS PAI-2 inhibited proteolytic activity of the bacterial consortium, as seen by decreased fluorescence of all substrates. PAI-2 specifically inhibited P. gingivalis proteolytic activity. CONCLUSION To our knowledge, this is the first time that PAI-2 has been shown to inhibit bacterial proteases. Given the high concentration of PAI-2 in the gingival region, our results indicate that PAI-2 might play a role for the integrity of the epithelial barrier.
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Affiliation(s)
- Jessica Neilands
- Department of Oral Biology, Faculty of Odontology, Malmö University College, Malmö, Sweden
| | - Floris J Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, Free University and University of Amsterdam, Amsterdam, The Netherlands
| | - Bertil Kinnby
- Department of Oral Biology, Faculty of Odontology, Malmö University College, Malmö, Sweden.
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31
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Neilands J, Wickström C, Kinnby B, Davies J, Hall J, Friberg B, Svensäter G. Bacterial profiles and proteolytic activity in peri-implantitis versus healthy sites. Anaerobe 2015; 35:28-34. [DOI: 10.1016/j.anaerobe.2015.04.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 04/03/2015] [Accepted: 04/08/2015] [Indexed: 12/25/2022]
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32
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Imamura K, Takayama S, Saito A, Inoue E, Nakayama Y, Ogata Y, Shirakawa S, Nagano T, Gomi K, Morozumi T, Akiishi K, Watanabe K, Yoshie H. Evaluation of a novel immunochromatographic device for rapid and accurate clinical detection of Porphyromonas gingivalis in subgingival plaque. J Microbiol Methods 2015; 117:4-10. [PMID: 26159910 DOI: 10.1016/j.mimet.2015.07.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 06/29/2015] [Accepted: 07/02/2015] [Indexed: 12/25/2022]
Abstract
UNLABELLED An important goal for the improved diagnosis and management of infectious and inflammatory diseases, such as periodontitis, is the development of rapid and accurate technologies for the decentralized detection of bacterial pathogens. The aim of this prospective multicenter study was to evaluate the clinical use of a novel immunochromatographic device with monoclonal antibodies for the rapid point-of-care detection and semi-quantification of Porphyromonas gingivalis in subgingival plaque. Sixty-three patients with chronic periodontitis and 28 periodontally healthy volunteers were subjected to clinical and microbiological examinations. Subgingival plaque samples were analyzed for the presence of P. gingivalis using a novel immunochromatography based device DK13-PG-001, designed to detect the 40k-outer membrane protein of P. gingivalis, and compared with a PCR-Invader method. In the periodontitis group, a significant strong positive correlation in detection results was found between the test device score and the PCR-Invader method (Spearman rank correlation, r=0.737, p<0.0001). The sensitivity, specificity, and positive and negative predictive values of the test device were 96.2%, 91.8%, 90.4% and 96.7%, respectively. The detection threshold of the test device was determined to be approximately 10(4) (per two paper points). There were significant differences in the bacterial counts by the PCR-Invader method among groups with different ranges of device scores. With a cut-off value of ≥0.25 in device score, none of periodontally healthy volunteers were tested positive for the subgingival presence of P. gingivalis, whereas 76% (n=48) of periodontitis subjects were tested positive. There was a significant positive correlation between device scores for P. gingivalis and periodontal parameters including probing pocket depth and clinical attachment level (r=0.317 and 0.281, respectively, p<0.01). The results suggested that the DK13-PG-001 device kit can be effectively used for rapid, chair-side detection and semi-quantification of P. gingivalis in subgingival plaque. TRIAL REGISTRATION UMIN Clinical Trials Registry (UMIN-CTR) UMIN000011943.
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Affiliation(s)
- K Imamura
- Department of Periodontology, Tokyo Dental College, 2-9-18 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - S Takayama
- Department of Periodontology, Tokyo Dental College, 2-9-18 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - A Saito
- Department of Periodontology, Tokyo Dental College, 2-9-18 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan.
| | - E Inoue
- Department of Periodontology, Nihon University School of Dentistry at Matsudo, 2-870-1 Sakaecho-nishi, Matsudo, Chiba 271-8587, Japan
| | - Y Nakayama
- Department of Periodontology, Nihon University School of Dentistry at Matsudo, 2-870-1 Sakaecho-nishi, Matsudo, Chiba 271-8587, Japan
| | - Y Ogata
- Department of Periodontology, Nihon University School of Dentistry at Matsudo, 2-870-1 Sakaecho-nishi, Matsudo, Chiba 271-8587, Japan
| | - S Shirakawa
- Department of Periodontology, Tsurumi University, School of Dental Medicine, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama 230-8501, Japan
| | - T Nagano
- Department of Periodontology, Tsurumi University, School of Dental Medicine, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama 230-8501, Japan
| | - K Gomi
- Department of Periodontology, Tsurumi University, School of Dental Medicine, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama 230-8501, Japan
| | - T Morozumi
- Division of Periodontology, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, 2-5274 Gakkocho-dori, Chuo-ku, Niigata 951-8514, Japan
| | - K Akiishi
- Reagent R&D Department, Denka Seiken Co., Ltd., 1359-1, Kagamida, Kigoshi, Gosen-shi, Niigata 959-1695, Japan
| | - K Watanabe
- Showa Yakuhin Kako Co., Ltd, 4-12-15-19F Ginza, Chuo-ku, Tokyo 104-0061, Japan
| | - H Yoshie
- Division of Periodontology, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, 2-5274 Gakkocho-dori, Chuo-ku, Niigata 951-8514, Japan
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Laheij AMGA, van Loveren C, Deng D, de Soet JJ. The impact of virulence factors of Porphyromonas gingivalis on wound healing in vitro. J Oral Microbiol 2015; 7:27543. [PMID: 26142460 PMCID: PMC4491305 DOI: 10.3402/jom.v7.27543] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 06/08/2015] [Accepted: 06/10/2015] [Indexed: 01/09/2023] Open
Abstract
Background Porphyromonas gingivalis inhibits oral epithelial wound healing in vitro more strongly than other oral bacteria, but it is unknown why P. gingivalis is such a potent inhibitor of wound healing. Objective Therefore, the aim of this study was to investigate the influence of major virulence factors of P. gingivalis on wound healing in an in vitro wound-healing model. The influence of the capsular polysaccharide, the Arg- and Lys- gingipains, the major fimbriae and lipopolysaccharide (LPS) was investigated. Design A standardized scratch was made in a confluent layer of human oral epithelial cells HO-1-N-1. The epithelial cells were then challenged with different concentrations of several P. gingivalis wild-type strains and knockout mutants. Closure of the scratch was determined after 17 h and compared to control conditions without bacteria. Results The P. gingivalis strains ATCC 33277, W83, and W50 significantly inhibited wound healing. The presence of a capsular polysaccharide lowered significantly the inhibition of epithelial cell migration, while gingipain activity significantly increased the inhibition of cell migration. LPS and the major fimbriae did not influence epithelial cell migration. None of the tested P. gingivalis strains completely prevented the inhibition of cell migration, suggesting that other characteristics of P. gingivalis also play a role in the inhibition of wound healing, and that further research is needed. Conclusions The capsular polysaccharide and the Arg- and Lys- gingipains of P. gingivalis influenced the capacity of P. gingivalis to hinder wound healing, while LPS and the major fimbriae had no effect.
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Affiliation(s)
- Alexa M G A Laheij
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands;
| | - Cor van Loveren
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
| | - Dongmei Deng
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
| | - Johannes J de Soet
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
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Secreted gingipains from Porphyromonas gingivalis colonies exert potent immunomodulatory effects on human gingival fibroblasts. Microbiol Res 2015; 178:18-26. [PMID: 26302843 DOI: 10.1016/j.micres.2015.05.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 05/05/2015] [Accepted: 05/28/2015] [Indexed: 11/23/2022]
Abstract
Periodontal pathogens, including Porphyromonas gingivalis, can form biofilms in dental pockets and cause inflammation, which is one of the underlying mechanisms involved in the development of periodontal disease, ultimately leading to tooth loss. Although P. gingivalis is protected in the biofilm, it can still cause damage and modulate inflammatory responses from the host, through secretion of microvesicles containing proteinases. The aim of this study was to evaluate the role of cysteine proteinases in P. gingivalis colony growth and development, and subsequent immunomodulatory effects on human gingival fibroblast. By comparing the wild type W50 with its gingipain deficient strains we show that cysteine proteinases are required by P. gingivalis to form morphologically normal colonies. The lysine-specific proteinase (Kgp), but not arginine-specific proteinases (Rgps), was associated with immunomodulation. P. gingivalis with Kgp affected the viability of gingival fibroblasts and modulated host inflammatory responses, including induction of TGF-β1 and suppression of CXCL8 and IL-6 accumulation. These results suggest that secreted products from P. gingivalis, including proteinases, are able to cause damage and significantly modulate the levels of inflammatory mediators, independent of a physical host-bacterial interaction. This study provides new insight of the pathogenesis of P. gingivalis and suggests gingipains as targets for diagnosis and treatment of periodontitis.
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Prodan A, Brand HS, Ligtenberg AJM, Imangaliyev S, Tsivtsivadze E, van der Weijden F, Crielaard W, Keijser BJF, Veerman ECI. Interindividual variation, correlations, and sex-related differences in the salivary biochemistry of young healthy adults. Eur J Oral Sci 2015; 123:149-57. [DOI: 10.1111/eos.12182] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/22/2015] [Indexed: 01/08/2023]
Affiliation(s)
- Andrei Prodan
- Top Institute Food and Nutrition; Wageningen The Netherlands
- Department of Oral Biochemistry; Academic Center for Dentistry Amsterdam (ACTA); University of Amsterdam and Free University Amsterdam; Amsterdam The Netherlands
| | - Henk S. Brand
- Department of Oral Biochemistry; Academic Center for Dentistry Amsterdam (ACTA); University of Amsterdam and Free University Amsterdam; Amsterdam The Netherlands
| | - Antoon J. M. Ligtenberg
- Department of Oral Biochemistry; Academic Center for Dentistry Amsterdam (ACTA); University of Amsterdam and Free University Amsterdam; Amsterdam The Netherlands
| | - Sultan Imangaliyev
- Top Institute Food and Nutrition; Wageningen The Netherlands
- MSB Group; the Netherlands Organization for Applied Scientific Research (TNO); Zeist The Netherlands
| | - Evgeni Tsivtsivadze
- MSB Group; the Netherlands Organization for Applied Scientific Research (TNO); Zeist The Netherlands
| | - Fridus van der Weijden
- Department of Periodontology; Academic Centre for Dentistry Amsterdam (ACTA); University of Amsterdam and Free University Amsterdam; Amsterdam The Netherlands
| | - Wim Crielaard
- Top Institute Food and Nutrition; Wageningen The Netherlands
- Department of Preventive Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); University of Amsterdam and Free University Amsterdam; Amsterdam the Netherlands
| | - Bart J. F. Keijser
- Top Institute Food and Nutrition; Wageningen The Netherlands
- MSB Group; the Netherlands Organization for Applied Scientific Research (TNO); Zeist The Netherlands
| | - Enno C. I. Veerman
- Department of Oral Biochemistry; Academic Center for Dentistry Amsterdam (ACTA); University of Amsterdam and Free University Amsterdam; Amsterdam The Netherlands
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Scheres N, Lamont RJ, Crielaard W, Krom BP. LuxS signaling in Porphyromonas gingivalis-host interactions. Anaerobe 2014; 35:3-9. [PMID: 25434960 DOI: 10.1016/j.anaerobe.2014.11.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 11/16/2014] [Accepted: 11/17/2014] [Indexed: 12/27/2022]
Abstract
Dental plaque is a multispecies biofilm in the oral cavity that significantly influences oral health. The presence of the oral anaerobic pathogen Porphyromonas gingivalis is an important determinant in the development of periodontitis. Direct and indirect interactions between P. gingivalis and the host play a major role in disease development. Transcriptome analysis recently revealed that P. gingivalis gene-expression is regulated by LuxS in both an AI-2-dependent and an AI-2 independent manner. However, little is known about the role of LuxS-signaling in P. gingivalis-host interactions. Here, we investigated the effect of a luxS mutation on the ability of P. gingivalis to induce an inflammatory response in human oral cells in vitro. Primary periodontal ligament (PDL) fibroblasts were challenged with P. gingivalis ΔluxS or the wild-type parental strain and gene-expression of pro-inflammatory mediators IL-1β, IL-6 and MCP-1 was determined by real-time PCR. The ability of P. gingivalis ΔluxS to induce an inflammatory response was severely impaired in PDL-fibroblasts. This phenotype could be restored by providing of LuxS in trans, but not by addition of the AI-2 precursor DPD. A similar phenomenon was observed in a previous transcriptome study showing that expression of PGN_0482 was reduced in the luxS mutant independently of AI-2. We therefore also analyzed the effect of a mutation in PGN_0482, which encodes an immuno-reactive, putative outer-membrane protein. Similar to P. gingivalis ΔluxS, the P. gingivalis Δ0482 mutant had an impaired ability to induce an inflammatory response in PDL fibroblasts. LuxS thus appears to influence the pro-inflammatory responses of host cells to P. gingivalis, likely through regulation of PGN_0482.
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Affiliation(s)
- Nina Scheres
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), VU Free University and the University of Amsterdam, Gustav Mahlerlaan 3004, 1081 BT Amsterdam, The Netherlands.
| | - Richard J Lamont
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY 40202, United States
| | - Wim Crielaard
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), VU Free University and the University of Amsterdam, Gustav Mahlerlaan 3004, 1081 BT Amsterdam, The Netherlands
| | - Bastiaan P Krom
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), VU Free University and the University of Amsterdam, Gustav Mahlerlaan 3004, 1081 BT Amsterdam, The Netherlands.
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Bikker FJ, Koop G, Leusink NB, Nazmi K, Kaman WE, Brand HS, Veerman ECI. Tailor made plasmin substrates as potential diagnostic tool to test for mastitis. Vet Res Commun 2014; 38:271-7. [DOI: 10.1007/s11259-014-9611-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/27/2014] [Indexed: 10/25/2022]
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Górniak MGV, Czernicka A, Młynarz P, Balcerzak W, Kafarski P. Synthesis of fluorescent (benzyloxycarbonylamino)(aryl)methylphosphonates. Beilstein J Org Chem 2014; 10:741-5. [PMID: 24778727 PMCID: PMC3999870 DOI: 10.3762/bjoc.10.68] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Accepted: 03/12/2014] [Indexed: 11/23/2022] Open
Abstract
The synthesis of a library of structurally variable aromatic esters of (benzyloxycarbonylamino)(aryl)methylphosphonic acids is described by means of the Oleksyszyn reaction. The library was enlarged by the application of a Suzuki–Miayra approach and by preparation of mixed esters.
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Affiliation(s)
- Michał Górny Vel Górniak
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland ; Department of Chemistry, University of Opole, pl. Kopernika 11a, 45-040 Opole, Poland
| | - Anna Czernicka
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Piotr Młynarz
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Waldemar Balcerzak
- First Department of General, Gastroenterological and Endocrinological Surgery, Wroclaw Medical University, ul. Marii Skłodowskiej-Curie 66, 50-369 Wrocław, Poland
| | - Paweł Kafarski
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland ; Department of Chemistry, University of Opole, pl. Kopernika 11a, 45-040 Opole, Poland
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Kaman WE, Hays JP, Endtz HP, Bikker FJ. Bacterial proteases: targets for diagnostics and therapy. Eur J Clin Microbiol Infect Dis 2014; 33:1081-7. [PMID: 24535571 DOI: 10.1007/s10096-014-2075-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 01/30/2014] [Indexed: 02/02/2023]
Abstract
Proteases are essential for the proliferation and growth of bacteria, and are also known to contribute to bacterial virulence. This makes them interesting candidates as diagnostic and therapeutic targets for infectious diseases. In this review, the authors discuss the most recent developments and potential applications for bacterial proteases in the diagnosis and treatment of bacterial infections. Current and future bacterial protease targets are described and their limitations outlined.
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Affiliation(s)
- W E Kaman
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC, 's-Gravendijkwal 230, 3015 CE, Rotterdam, The Netherlands,
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Kaman WE, Arkoubi-El Arkoubi NE, Roffel S, Endtz HP, van Belkum A, Bikker FJ, Hays JP. Evaluation of a FRET-peptide substrate to predict virulence in Pseudomonas aeruginosa. PLoS One 2013; 8:e81428. [PMID: 24303047 PMCID: PMC3841150 DOI: 10.1371/journal.pone.0081428] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 10/12/2013] [Indexed: 11/19/2022] Open
Abstract
Pseudomonas aeruginosa produces a number of proteases that are associated with virulence and disease progression. A substrate able to detect P. aeruginosa-specific proteolytic activity could help to rapidly alert clinicians to the virulence potential of individual P. aeruginosa strains. For this purpose we designed a set of P. aeruginosa-specific fluorogenic substrates, comprising fluorescence resonance energy transfer (FRET)-labeled peptides, and evaluated their applicability to P. aeruginosa virulence in a range of clinical isolates. A FRET-peptide comprising three glycines (3xGly) was found to be specific for the detection of P. aeruginosa proteases. Further screening of 97 P. aeruginosa clinical isolates showed a wide variation in 3xGly cleavage activity. The absence of 3xGly degradation by a lasI knock out strain indicated that 3xGly cleavage by P. aeruginosa could be quorum sensing (QS)-related, a hypothesis strengthened by the observation of a strong correlation between 3xGly cleavage, LasA staphylolytic activity and pyocyanin production. Additionally, isolates able to cleave 3xGly were more susceptible to the QS inhibiting antibiotic azithromycin (AZM). In conclusion, we designed and evaluated a 3xGly substrate possibly useful as a simple tool to predict virulence and AZM susceptibility.
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Affiliation(s)
- Wendy E. Kaman
- Department of Medical Microbiology and Infectious Diseases, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
- * E-mail:
| | - Nora El Arkoubi-El Arkoubi
- Department of Medical Microbiology and Infectious Diseases, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Sanne Roffel
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
| | - Hubert P. Endtz
- Department of Medical Microbiology and Infectious Diseases, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Alex van Belkum
- Department of Medical Microbiology and Infectious Diseases, Erasmus Medical Center, Rotterdam, The Netherlands
- Research & Development Microbiology, BioMérieux, La Balme les Grottes, France
| | - Floris J. Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
| | - John P. Hays
- Department of Medical Microbiology and Infectious Diseases, Erasmus Medical Center, Rotterdam, The Netherlands
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Bunschoten A, Welling MM, Termaat MF, Sathekge M, van Leeuwen FWB. Development and Prospects of Dedicated Tracers for the Molecular Imaging of Bacterial Infections. Bioconjug Chem 2013; 24:1971-89. [PMID: 24200346 DOI: 10.1021/bc4003037] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- A. Bunschoten
- Department
of Radiology, Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Leiden, The Netherlands
| | - M. M. Welling
- Department
of Radiology, Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Leiden, The Netherlands
| | - M. F. Termaat
- Department
of Trauma Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - M. Sathekge
- Department of Nuclear Medicine, University of Pretoria & Steve Biko Academic Hospital, Pretoria, South Africa
| | - F. W. B. van Leeuwen
- Department
of Radiology, Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Leiden, The Netherlands
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Evaluation of a D-amino-acid-containing fluorescence resonance energy transfer peptide library for profiling prokaryotic proteases. Anal Biochem 2013; 441:38-43. [DOI: 10.1016/j.ab.2013.06.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 06/25/2013] [Accepted: 06/27/2013] [Indexed: 02/02/2023]
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Scheres N, Crielaard W. Gingival fibroblast responsiveness is differentially affected by Porphyromonas gingivalis: implications for the pathogenesis of periodontitis. Mol Oral Microbiol 2012; 28:204-18. [PMID: 23279858 DOI: 10.1111/omi.12016] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/06/2012] [Indexed: 12/26/2022]
Abstract
In periodontitis, tissue damage results mainly from aberrant host responses to oral microorganisms. Fibroblasts can play an important role in this. Gingival fibroblasts do not develop tolerance against the lipopolysaccharide of Porphyromonas gingivalis, a keystone pathogen in periodontitis, which may partly explain the persistence of inflammation. However, besides lipopolysaccharide, live P. gingivalis possess numerous virulence traits to impair host-responses. We hypothesized that fibroblast-responsiveness to a bacterial challenge could be affected by live P. gingivalis. We investigated if inflammatory responses of gingival fibroblasts to P. gingivalis were altered, when the fibroblasts had encountered P. gingivalis previously. On consecutive days, primary human gingival fibroblasts were challenged twice for 6 h with live P. gingivalis, or fibroblasts were preincubated for 24 h with a lower concentration of live P. gingivalis and re-challenged for 6 h with a higher concentration. As the P. gingivalis capsule and proteases are involved in modulating host responses, we used encapsulated P. gingivalis W83 and a non-encapsulated mutant, and P. gingivalis ATCC33277 and a lys-gingipain and arg-gingipain mutant, to challenge fibroblasts. With all P. gingivalis-strains, interleukin-8 and monocyte chemoattractant protein-1 responses to the second challenge were less strong in fibroblasts that had been challenged with P. gingivalis before. These lower responses might correspond with higher interleukin-1 receptor agonist expression. Fibroblast responses to a second challenge were not influenced by 24 h preincubation. Reduced chemokine responses after consecutive potent P. gingivalis challenges indicate that gingival fibroblast responsiveness is affected by a previous bacterial encounter. In periodontitis, such reduced chemokine responses may impair chemotaxis and clearance of oral microorganisms, thereby leading to prolonged inflammatory responses and tissue damage.
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Affiliation(s)
- N Scheres
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam, VU University Amsterdam, Amsterdam, The Netherlands.
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van Belkum A, Durand G, Peyret M, Chatellier S, Zambardi G, Schrenzel J, Shortridge D, Engelhardt A, Dunne WM. Rapid clinical bacteriology and its future impact. Ann Lab Med 2012; 33:14-27. [PMID: 23301218 PMCID: PMC3535192 DOI: 10.3343/alm.2013.33.1.14] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Accepted: 10/10/2012] [Indexed: 02/01/2023] Open
Abstract
Clinical microbiology has always been a slowly evolving and conservative science. The sub-field of bacteriology has been and still is dominated for over a century by culture-based technologies. The integration of serological and molecular methodologies during the seventies and eighties of the previous century took place relatively slowly and in a cumbersome fashion. When nucleic acid amplification technologies became available in the early nineties, the predicted "revolution" was again slow but in the end a real paradigm shift did take place. Several of the culture-based technologies were successfully replaced by tests aimed at nucleic acid detection. More recently a second revolution occurred. Mass spectrometry was introduced and broadly accepted as a new diagnostic gold standard for microbial species identification. Apparently, the diagnostic landscape is changing, albeit slowly, and the combination of newly identified infectious etiologies and the availability of innovative technologies has now opened new avenues for modernizing clinical microbiology. However, the improvement of microbial antibiotic susceptibility testing is still lagging behind. In this review we aim to sketch the most recent developments in laboratory-based clinical bacteriology and to provide an overview of emerging novel diagnostic approaches.
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Affiliation(s)
- Alex van Belkum
- BioMérieux SA, Unit Microbiology, R&D Microbiology, La Balme Les Grottes, France
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Galassi F, Kaman WE, Anssari Moin D, van der Horst J, Wismeijer D, Crielaard W, Laine ML, Veerman ECI, Bikker FJ, Loos BG. Comparing culture, real-time PCR and fluorescence resonance energy transfer technology for detection of Porphyromonas gingivalis in patients with or without peri-implant infections. J Periodontal Res 2012; 47:616-25. [PMID: 22458637 DOI: 10.1111/j.1600-0765.2012.01474.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVE The aim of the study was to compare the detection of Porphyromonas gingivalis using a fluorescence resonance energy transfer (FRET) technology with commonly used diagnostic methods in salivary and subgingival plaque samples from subjects with dental implants. P. gingivalis was considered as a marker for a pathogenic microbiota. MATERIAL AND METHODS Ninety-seven adult subjects were recruited, including periodontally healthy controls with no dental implants, implant controls with no peri-implant disease and patients with peri-implant disease. Saliva and subgingival/submucosal plaque samples were collected from all subjects and were analyzed using culture, real-time PCR and FRET technology employing P. gingivalis-specific substrates. RESULTS It was found that the P. gingivalis-specific substrates were highly suitable for detecting the presence of P. gingivalis in saliva and in subgingival plaque samples, showing comparable specificity to culture and real-time PCR. CONCLUSION We applied the FRET technology to detect P. gingivalis in implant patients with or without an implant condition and in controls without implants. The technique seems suitable for detection of P. gingivalis in both plaque and saliva samples. However, with all three techniques, P. gingivalis was not very specific for peri-implantitis cases. Future work includes fine-tuning the FRET technology and also includes the development of a chair-side application.
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Affiliation(s)
- F Galassi
- Department of Periodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University, Amsterdam, The Netherlands
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