Molecular Oral Microbiology最新文献

{"title":"Suppressive Effects of Kouboku on Methyl Mercaptan Production and Biofilm Formation in Porphyromonas gingivalis.","authors":"Yuri Taniguchi, Kazuhisa Ouhara, Yoko Sato, Mikio Shoji, Yitong Hou, Ruoqi Zhai, Ryousuke Fujimori, Naoya Kuwahara, Tetsuya Tamura, Shinji Matsuda, Noriyoshi Mizuno","doi":"10.1111/omi.12493","DOIUrl":"10.1111/omi.12493","url":null,"abstract":"<p><p>Porphyromonas gingivalis, the bacterium responsible for periodontitis, produces several pathogenic factors, including methyl mercaptan, which contribute to the disease. Kouboku (Magnoliaceae), a Chinese herbal medicine, has been shown to suppress methyl mercaptan production from P. gingivalis. In this study, we investigated the inhibitory effect of Kouboku on methyl mercaptan production, biofilm formation, P. gingivalis-host cell interactions, and its potential synergistic antibacterial effect with antibiotics. Five standard and five clinically isolated P. gingivalis strains were evaluated. Methyl mercaptan production was measured using OralChroma. The mRNA expression of mgl and fimA, which are involved in methyl mercaptan synthesis and adhesion molecules, was assessed using quantitative PCR. Biofilm formation by P. gingivalis and epithelial cell adhesion were analyzed following treatment with or without Kouboku. Furthermore, the effects of the active ingredients of Kouboku, honokiol, and magnolol, on the minimum inhibitory concentrations (MICs) of antibiotics against P. gingivalis were determined. No significant differences were observed in the suppression of methyl mercaptan production among P. gingivalis strains with different FimA genotypes treated with Kouboku. Moreover, Kouboku inhibited biofilm formation in co-cultures of P. gingivalis and Fusobacterium nucleatum, as well as the adhesion of P. gingivalis to gingival epithelial cells through the downregulation of fimA. Treatment with honokiol and magnolol reduced the MICs of ampicillin, gentamicin, erythromycin, and tetracycline against P. gingivalis. These findings demonstrate that Kouboku affects P. gingivalis by modulating its adhesion to other bacteria and host cells, and enhances the antibacterial activity of certain antibiotics.</p>","PeriodicalId":18815,"journal":{"name":"Molecular Oral Microbiology","volume":" ","pages":"128-136"},"PeriodicalIF":2.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12000855/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143523905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of Periodontal Lipopolysaccharides on Systemic Health: Mechanisms, Clinical Implications, and Future Directions.","authors":"Wanderson S Santos, Isabelly G Solon, Luiz G S Branco","doi":"10.1111/omi.12490","DOIUrl":"10.1111/omi.12490","url":null,"abstract":"<p><p>Periodontal diseases, particularly periodontitis, are complex inflammatory conditions caused by interactions between oral microbiota and the host immune response. Lipopolysaccharides (LPSs) from Gram-negative bacteria like Tannerella forsythia, Treponema denticola, and Porphyromonas gingivalis are key in pathogenesis. This review examines how LPS impacts systemic health through direct invasion, compromised oral barriers, increased vascular permeability, and immune cell transport. LPS triggers inflammation in periodontal tissues, leading to tissue destruction and disease progression. In the bloodstream, LPS contributes to conditions, such as cardiovascular diseases, diabetes, respiratory diseases, and rheumatoid arthritis. Current treatments include mechanical debridement, antibiotics, antimicrobial mouthwashes, and anti-inflammatory therapies. Despite progress, gaps remain in understanding the molecular mechanisms of LPS in systemic diseases. Future research should focus on longitudinal studies, the gut-oral axis, biomarkers for early detection, and the lymphatic system's role in LPS dissemination. Maintaining periodontal health is crucial for overall systemic well-being.</p>","PeriodicalId":18815,"journal":{"name":"Molecular Oral Microbiology","volume":" ","pages":"117-127"},"PeriodicalIF":2.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142739631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Single-Cell RNA Sequencing Reveals Functional Exhaustion of T Cells in Oral Lichen Planus.","authors":"Xin Chen, Xin-Wen Wu, Ruo-Wen Zhao, Pan Xu, Ping-Yi Zhu, Kai-Lin Tang, Yuan He","doi":"10.1111/omi.12495","DOIUrl":"https://doi.org/10.1111/omi.12495","url":null,"abstract":"<p><strong>Background: </strong>Oral lichen planus (OLP) is a common T-cell-mediated chronic inflammatory disease of the oral mucosa. Different T-cell subsets play distinct roles in the pathogenesis of OLP. This study aims to reveal the composition and heterogeneity of T cells in the immune microenvironment of OLP using single-cell RNA sequencing (scRNA-seq), thus providing new insights into the pathogenesis of OLP.</p><p><strong>Materials and methods: </strong>Oral mucosal tissues were collected from three OLP patients and three healthy individuals for scRNA-seq. Data were processed using R software for dimensionality reduction, clustering, annotation, proportion analysis, gene expression visualization, and pseudotime analysis. A chronic inflammation model was established by injecting Prevotella melaninogenica bacteria solution into the buccal mucosa of mice. RT-qPCR was used to detect the expression levels of OLP-related inflammatory factors (Tnf-α, Il-1b, and Il-6) and the exhaustion marker Pd1. HE and immunofluorescence staining were employed to assess histopathological changes in oral mucosal tissues and the quantity of CD8⁺-exhausted T cells (CD8⁺Tex).</p><p><strong>Results: </strong>ScRNA-seq results showed a significant increase in T cell numbers in the oral mucosal tissues of OLP patients compared to healthy individuals. The average expression levels of effector molecules (GZMB, PRF1, TNFA, IL2, and IFNG) in CD8⁺ T cells were reduced. The number of CD8⁺Tex significantly increased, and these cells were in the terminal stage of CD8⁺ T-cell differentiation, thereby expressing high levels of terminal exhaustion-related genes (PDCD1, LAG3, and TIGIT). Compared to the control group, the P. melaninogenica chronic inflammation group exhibited epithelial thickening and inflammatory cell infiltration in the lamina propria, with significantly upregulated expression of OLP-related inflammatory factors and Pd1. Immunofluorescence staining revealed increased CD8⁺Tex in the oral mucosa of OLP patients and P. melaninogenica mice model.</p><p><strong>Conclusions: </strong>During the pathogenesis of OLP, the overall ability of T cells to clear antigens is decreased, leading to an inadequate ability to promptly eliminate pathogens and infected cells, which may cause the chronicity of OLP inflammation.</p>","PeriodicalId":18815,"journal":{"name":"Molecular Oral Microbiology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143990958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shining Light on Oral Biofilm Fluorescence In Situ Hybridization (FISH): Probing the Accuracy of In Situ Biogeography Studies.","authors":"Molly Burnside, Jonah Tang, Jonathon L Baker, Justin Merritt, Jens Kreth","doi":"10.1111/omi.12494","DOIUrl":"https://doi.org/10.1111/omi.12494","url":null,"abstract":"<p><p>The oral biofilm has been instrumental in advancing microbial research and enhancing our understanding of oral health and disease. Recent developments in next-generation sequencing have provided detailed insights into the microbial composition of the oral microbiome, enabling species-level analyses of biofilm interactions. Fluorescence in situ hybridization (FISH) has been especially valuable for studying the spatial organization of these microbes, revealing intricate arrangements such as \"corncob\" structures that highlight close bacterial interactions. As more genetic sequence data become available, the specificity and accuracy of existing FISH probes used in biogeographical studies require reevaluation. This study examines the performance of commonly used species-specific FISH probes, designed to differentiate oral microbes within in situ oral biofilms, when applied in vitro to an expanded set of bacterial strains. Our findings reveal that the specificity of several FISH probes is compromised, with cross-species hybridization being more common than previously assumed. Notably, we demonstrate that biogeographical associations within in situ oral biofilms, particularly involving Streptococcus and Corynebacterium, may need to be reassessed to align with the latest metagenomic data.</p>","PeriodicalId":18815,"journal":{"name":"Molecular Oral Microbiology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143982278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Environmental Factors on the Nitrate and Nitrite Metabolism of Oral Actinomyces and Schaalia Species.","authors":"Tomona Otake, Jumpei Washio, Kazuko Ezoe, Satoko Sato, Yuki Abiko, Kaoru Igarashi, Nobuhiro Takahashi","doi":"10.1111/omi.12492","DOIUrl":"10.1111/omi.12492","url":null,"abstract":"<p><p>Actinomyces naeslundii and Schaalia odontolytica belong to the most predominant nitrite-producing bacteria in the oral microbiome. Nitrite has antibacterial and vasodilatory effects that may contribute to maintaining oral and systemic health. We have previously elucidated the metabolic characteristics of the nitrite-producing activity of oral Veillonella species and the effects of oral environmental factors. However, this is still unknown for Actinomyces and Schaalia species. Furthermore, these bacteria are thought to degrade nitrite. Therefore, this study aimed to comprehensively elucidate the effects of environmental factors (pH, oxygen concentration, glucose, lactate, and the presence of nitrate/nitrite during growth) on nitrate and nitrite metabolism of these bacterial species using the type strains. Nitrite was quantified by Griess reagent, and final metabolites were analyzed by high-performance liquid chromatography (HPLC). The nitrite-producing activity of A. naeslundii and S. odontolytica was affected variously by environmental factors. Especially in A. naeslundii, under anaerobic conditions, the activity increased in a concentration-dependent manner with the addition of glucose or lactate and was higher at lower pH when lactate was added. The nitrite-degrading activity of both bacteria was lower than the nitrite-producing activity and was less affected by environmental factors. Metabolites from glucose by A. naeslundii were different with and without nitrate, suggesting that nitrate altered metabolic pathways. The growth was inhibited under anaerobic conditions but promoted under aerobic conditions. These results indicate that the nitrite-producing capacity of the oral microflora must take into account not only the composition and abundance of bacteria but also the variation in metabolic activity due to various environmental factors.</p>","PeriodicalId":18815,"journal":{"name":"Molecular Oral Microbiology","volume":" ","pages":"104-115"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11904265/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143256262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Decoding Adenine DNA Methylation Effects in Streptococcus Mutans: Insights Into Self-DNA Protection and Autoaggregation.","authors":"Haowei Zhao, Delphine Dufour, Jamie Zhong, Siew-Ging Gong, Paul H Roy, Céline M Lévesque","doi":"10.1111/omi.12489","DOIUrl":"10.1111/omi.12489","url":null,"abstract":"<p><p>Streptococcus mutans, a key player in dental caries, faces multiple environmental challenges within the oral cavity, including oxidative stress, nutrient scarcity, and acidic pH. To survive and thrive, S. mutans has evolved intricate mechanisms, including the CSP-ComDE quorum sensing system, which coordinates responses to environmental cues. The CSP-ComDE system enables S. mutans to communicate with neighboring cells via its CSP pheromone. Under stress conditions, the CSP pheromone production increases, triggering a cascade of events. Notably, our research demonstrated that the CSP pheromone activates the expression of a Type II restriction-modification (R-M) system. Type II R-M systems are well-known tools in molecular biology and genetic engineering and consist of two distinct enzymes: a restriction enzyme and a methyltransferase. An increasing number of studies have revealed that bacterial adenine methylation (Dam methylation) has a broader role beyond mere DNA protection. In fact, the marks introduced into the DNA provide signals for a variety of physiological processes. Our results highlight a conserved chromosomal locus in S. mutans encoding the DpnII R-M system. DpnII R-M methylates DNA at 5'-GATC target sites within the S. mutans genome and cleaves unmarked DNA. Furthermore, our findings suggest that Dam methylation significantly impacts foreign DNA acquisition via natural transformation and modulates mutanobactin expression-a secondary metabolite linked to oxidative stress tolerance. Collectively, our findings suggest that Dam methylation bridges epigenetics and bacterial fitness, potentially opening new avenues in bacterial epigenetics. As we explore this intricate biological process, we may uncover novel therapeutic strategies to combat bacterial infections.</p>","PeriodicalId":18815,"journal":{"name":"Molecular Oral Microbiology","volume":" ","pages":"82-93"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11904264/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142770423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From Teeth to Body: The Complex Role of Streptococcus mutans in Systemic Diseases.","authors":"Haowen Xiao, Yuqing Li","doi":"10.1111/omi.12491","DOIUrl":"10.1111/omi.12491","url":null,"abstract":"<p><p>Streptococcus mutans, the principal pathogen associated with dental caries, impacts individuals across all age groups and geographic regions. Beyond its role in compromising oral health, a growing body of research has established a link between S. mutans and various systemic diseases, including immunoglobulin A nephropathy (IgAN), nonalcoholic steatohepatitis (NASH), infective endocarditis (IE), ulcerative colitis (UC), cerebral hemorrhage, and tumors. The pathogenic mechanisms associated with S. mutans frequently involve collagen-binding proteins (CBPs) and protein antigens (PA) present on the bacterial surface. These components facilitate intricate interactions with the host immune system, thereby potentially contributing to various pathological processes. Specifically, CBP is implicated in the deposition of IgA and complement component C3, which exhibits characteristics reminiscent of IgAN-like lesions through animal models, recent clinical studies suggest a potential involvement of S. mutans in IgAN. In addition, CBP binds to complement component C1q, effectively inhibiting the classical activation pathway of the complement system. In addition, CBP promotes the induction of host cells to produce interferon-gamma (IFN-γ). Furthermore, CBP leads to direct inhibitory effects on platelets and the activation of matrix metalloproteinase-9 (MMP-9) at sites of vascular injury. Moreover, PA enhances the ability of S. mutans to invade hepatic tissue. Through utilization of its PAc, S. mutans excessively produces kynurenine (KYNA), which promotes the development and progression of oral squamous cell carcinoma (OSCC). This article synthesizes the latest advancements in understanding the mechanisms of intricate interactions between S. mutans and various systemic conditions in humans, expanding our perspective beyond the traditional focus on dental caries.</p>","PeriodicalId":18815,"journal":{"name":"Molecular Oral Microbiology","volume":" ","pages":"65-81"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143047252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Detection of Amyloid-β Peptides in Gingival Crevicular Fluid and Its Effect on Oral Pathogens.","authors":"Yue Liao, Hui-Wen Chen, Che Qiu, Hui Shen, Zhi-Yan He, Zhong-Chen Song, Wei Zhou","doi":"10.1111/omi.12488","DOIUrl":"10.1111/omi.12488","url":null,"abstract":"<p><p>Periodontitis is the most common oral inflammatory disease, contributing to the onset and progression of Alzheimer's disease. However, a full investigation has not been performed on the expression level of amyloid-β (Aβ) peptides in gingival crevicular fluid (GCF) and its effects on oral pathogens. This study aimed to analyze the expression level of Aβ peptides in GCF of patients with periodontitis and the effects of Aβ peptides against common oral pathogens. GCF samples were collected from patients with periodontitis (n = 15) and periodontally healthy people (n = 10). The antimicrobial effects of Aβ peptides were evaluated on four common oral pathogenic strains using an MTT assay, crystal violet staining, fluorescence microscope, and transmission electron microscope. The protein levels of Aβ40 and Aβ42 were upregulated in the GCF of periodontitis group compared with the healthy group. Both Aβ40 and Aβ42 exhibited antimicrobial effects on Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, and Lactobacillus acidophilus in both planktonic and biofilm conditions. Further, only Aβ40 showed an antimicrobial effect on the Fusobacterium nucleatum. The results of this study demonstrate that Aβ peptides in GCF may be a relevant indicator of periodontitis status. Besides, the antimicrobial peptides derived from Aβ peptides have great potential in periodontal therapy.</p>","PeriodicalId":18815,"journal":{"name":"Molecular Oral Microbiology","volume":" ","pages":"94-103"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142818506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of thioredoxin-thioredoxin reductase system in Filifactor alocis.","authors":"Arunima Mishra, Yuetan Dou, Hansel M Fletcher","doi":"10.1111/omi.12486","DOIUrl":"10.1111/omi.12486","url":null,"abstract":"<p><strong>Introduction: </strong>Filifactor alocis is a newly appreciated member of the periodontal community with a strong periodontal disease correlation. Little is known about the survival mechanisms by which F. alocis copes with oxidative stress and establishes the infection within the local inflammatory microenvironment of the periodontal pocket. The aim of this study is to investigate if F. alocis putative peroxiredoxin/AhpC protein FA768 may constitute an alkyl hydroperoxide reductase system utilizing putative thioredoxin reductase protein FA608, and putative thioredoxin/glutaredoxin homolog FA1411/FA455.</p><p><strong>Methods: </strong>FA768, FA608, FA1411 and FA455 proteins from F. alocis were expressed and purified from Escherichia coli. Insulin and 5,5-dithio-bis-2-nitrobenzoic acid (DTNB) reduction assays were performed to determine if purified FA1411 and FA455 proteins could be a substrate for FA608. The peroxidase activity of FA768 was examined by measuring its ability to reduce hydrogen peroxide (H₂O₂) with FA608 and FA1411/FA455 provided as the reducing systems. Further, the hydroperoxide substrate specificity of FA768 was analyzed by monitoring the NADPH oxidation in the presence of different peroxides, including H₂O₂, cumyl hydroperoxide (CHP), and tert-butyl hydroperoxide (t-BHP).</p><p><strong>Results: </strong>In this study, we have demonstrated the existence of a functioning thioredoxin-dependent alkyl hydroperoxide system in F. alocis. This system is comprised of a thioredoxin reductase (FA608), a thioredoxin/glutaredoxin homolog (FA1411/FA455), and a typical 2-cysteine peroxiredoxin/AhpC (FA768). FA608, together with FA1411/FA455, can function as a thioredoxin reductase system to reduce insulin, DTNB, and FA768. FA455 is a glutaredoxin-like protein with thioredoxin functions in F. alocis. Both the FA768/FA608/FA1411 and FA768/FA608/FA455 reductase systems were NADPH-dependent and exhibited specificity for broad hydroperoxide substrates H₂O₂, CHP, and t-BHP.</p><p><strong>Conclusions: </strong>This is the first study of a thioredoxin dependent alkyl hydroperoxide system from a periodontal pathogen. This system is proposed to protect F. alocis against oxidative stress due to the likely absence of a catalase or an additional peroxiredoxin homolog.</p>","PeriodicalId":18815,"journal":{"name":"Molecular Oral Microbiology","volume":" ","pages":"50-63"},"PeriodicalIF":2.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142470259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Role of CRISPR-Cas systems in periodontal disease pathogenesis and potential for periodontal therapy: A review.","authors":"Aditi Chopra, Geeta Bhuvanagiri, Kshitija Natu, Avneesh Chopra","doi":"10.1111/omi.12483","DOIUrl":"10.1111/omi.12483","url":null,"abstract":"<p><p>Clustered regularly interspaced short palindromic repeats (CRISPRs) are DNA sequences capable of editing a host genome sequence. CRISPR and its specific CRISPR-associated (Cas) protein complexes have been adapted for various applications. These include activating or inhibiting specific genetic sequences or acting as molecular scissors to cut and modify the host DNA precisely. CRISPR-Cas systems are also naturally present in many oral bacteria, where they aid in nutrition, biofilm formation, inter- and intraspecies communication (quorum sensing), horizontal gene transfer, virulence, inflammation modulation, coinfection, and immune response evasion. It even functions as an adaptive immune system, defending microbes against invading viruses and foreign genetic elements from other bacteria by targeting and degrading their DNA. Recently, CRISPR-Cas systems have been tested as molecular editing tools to manipulate specific genes linked with periodontal disease (such as periodontitis) and as novel methods of delivering antimicrobial agents to overcome antimicrobial resistance. With the rapidly increasing role of CRISPR in treating inflammatory diseases, its application in periodontal disease is also becoming popular. Therefore, this review aims to discuss the different types of CRISPR-Cas in oral microbes and their role in periodontal disease pathogenesis and precision periodontal therapy.</p>","PeriodicalId":18815,"journal":{"name":"Molecular Oral Microbiology","volume":" ","pages":"1-16"},"PeriodicalIF":2.8,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142120234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}