Xiaowei Sun, Hua Zhang, Xiao Zhang, Pengfei Xin, Xue Gao, Hong Rui Li, Cai Yun Zhou, Wen Min Gao, Xuan Xuan Kou, Jian Gang Zhang
{"title":"Liver Microbiome in Healthy Rats: The Hidden Inhabitants of Hepatocytes","authors":"Xiaowei Sun, Hua Zhang, Xiao Zhang, Pengfei Xin, Xue Gao, Hong Rui Li, Cai Yun Zhou, Wen Min Gao, Xuan Xuan Kou, Jian Gang Zhang","doi":"10.1155/2023/7369034","DOIUrl":"https://doi.org/10.1155/2023/7369034","url":null,"abstract":"The tumor and tissue microbiota of human beings have recently been investigated. Gut permeability is known as a possible resource for the positive detection of tissue bacteria. Herein, we report that microbiota were detected in high abundance in the hepatocytes of healthy rats and that they were shared with the gut microbiota to an extent. We assessed male Sprague Dawley (SD) rats for the 16S ribosomal ribonucleic acid (rRNA) gene. After the rats were sacrificed by blood drainage from the portal vein, we extracted total deoxyribonucleic acid (DNA) from their ileal and colonic contents and liver tissues. The V3–V4 region of the 16S rRNA gene was amplified by polymerase chain reaction (PCR) and sequenced using an Illumina HiSeq 2500 platform. Sequences were assigned taxonomically by the SILVA database. We also detected bacterial lipopolysaccharide (LPS) and lipoteichoic acid (LTA) in situ using immunofluorescence (IF) and western blotting and the 16S rRNA gene using fluorescent in situ hybridization (FISH). In the livers of six rats, we detected \u0000 \u0000 54,867.50\u0000 ±\u0000 6450.03\u0000 \u0000 effective tags of the 16S rRNA gene and clustered them into 1003 kinds of operational taxonomic units (OTUs; \u0000 \u0000 805.67\u0000 ±\u0000 70.14\u0000 \u0000 , 729–893). Rats showed conservation of bacterial richness, abundance, and evenness. LPS and the 16S rRNA gene were detected in the nuclei of hepatocytes. The main function composition of the genomes of annotated bacteria was correlated with metabolism (\u0000 \u0000 79.92\u0000 ±\u0000 0.24\u0000 %\u0000 \u0000 ). Gram negativity was about 1.6 times higher than gram positivity. The liver microbiome was shared with both the small and large intestines but showed significantly higher richness and evenness than the gut microbiome, and the β-diversity results showed that the liver microbiome exhibited significantly higher similarity than the small and large intestines (\u0000 \u0000 P\u0000 <\u0000 0.05\u0000 \u0000 ). Our results suggest that the bacteria in the liver microbiome are hidden intracellular inhabitants in healthy rat livers.","PeriodicalId":9844,"journal":{"name":"Cellular Microbiology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45324244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Geunhye Hong, Cadi Davies, Zahra Omole, Janie Liaw, Anna D. Grabowska, Barbara Canonico, Nicolae Corcionivoschi, Brendan W. Wren, Nick Dorrell, Abdi Elmi, Ozan Gundogdu
{"title":"Campylobacter jejuni Modulates Reactive Oxygen Species Production and NADPH Oxidase 1 Expression in Human Intestinal Epithelial Cells","authors":"Geunhye Hong, Cadi Davies, Zahra Omole, Janie Liaw, Anna D. Grabowska, Barbara Canonico, Nicolae Corcionivoschi, Brendan W. Wren, Nick Dorrell, Abdi Elmi, Ozan Gundogdu","doi":"10.1155/2023/3286330","DOIUrl":"https://doi.org/10.1155/2023/3286330","url":null,"abstract":"Campylobacter jejuni is the major bacterial cause of foodborne gastroenteritis worldwide. Mechanistically, how this pathogen interacts with intrinsic defence machinery of human intestinal epithelial cells (IECs) remains elusive. To address this, we investigated how C. jejuni counteracts the intracellular and extracellular reactive oxygen species (ROS) in IECs. Our work shows that C. jejuni differentially regulates intracellular and extracellular ROS production in human T84 and Caco-2 cells. C. jejuni downregulates the transcription and translation of nicotinamide adenine dinucleotide phosphate (NAPDH) oxidase (NOX1), a key ROS-generating enzyme in IECs and antioxidant defence genes CAT and SOD1. Furthermore, inhibition of NOX1 by diphenylene iodonium (DPI) and siRNA reduced C. jejuni ability to interact, invade, and intracellularly survive within T84 and Caco-2 cells. Collectively, these findings provide mechanistic insight into how C. jejuni modulates the IEC defence machinery.","PeriodicalId":9844,"journal":{"name":"Cellular Microbiology","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135555374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ji-Seon Ahn, Enkhchimeg Lkhagva, Sunjun Jung, Hyeon-Jin Kim, Hea-Jong Chung, Seong-Tshool Hong
{"title":"Fecal Microbiome Does Not Represent Whole Gut Microbiome","authors":"Ji-Seon Ahn, Enkhchimeg Lkhagva, Sunjun Jung, Hyeon-Jin Kim, Hea-Jong Chung, Seong-Tshool Hong","doi":"10.1155/2023/6868417","DOIUrl":"https://doi.org/10.1155/2023/6868417","url":null,"abstract":"The current gut microbiome research relies on the fecal microbiome under the assumption that the fecal microbiome represents the microbiome of the entire gastrointestinal (GI) tract. However, there have been growing concerns about using feces as a proxy to study the gut microbiome. Here, we comprehensively analyzed the composition of microbiome and metabolites in the feces and at 14 different locations of GI tracts of genetically homogenous sibling pigs to evaluate the validity of using feces as a proxy to the whole gut microbiome. The composition of intestinal microbes constituting the gut microbiome at each intestinal content and feces and their metabolic compositions were thoroughly investigated through metagenome sequencing and an ultraperformance LC-MS/MS, respectively. The fluctuation in the composition of the microbiome in the stomach and the small intestine became stabilized from the large intestine to feces and was able to be categorized into 3 groups. The taxonomic α-diversities measured by ACE (abundance-based coverage estimator) richness and Shannon diversity indicated that the microbiome in the large intestine was much more diverse than those of the small intestine and feces. The highly independent intestinal microbes in the stomach and the small intestine became flourished in the large intestine and converged into a community with tightly connected networks. β-Diversity analyses by NMDS plots, PCA, and unsupervised hierarchical clustering all showed that the diversities of microbiome compositions were lowest in feces while highest in the large intestine. In accordance with fluctuation of the composition of gut microbiome along with the GI tract, the metabolic composition also completely differed in a location-specific manner along with the GI tract. Comparative analysis of the fecal microbiome and metabolites with those of the whole GI tract indicated that fecal microbiome is insufficient to represent the whole gut microbiome.","PeriodicalId":9844,"journal":{"name":"Cellular Microbiology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48341420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nasrin Rastegarvand, H. Soleimanjahi, E. Arefian, M. Pourkarim
{"title":"Application of Bioinformatics Tools for the Prediction of Helper MicroRNAs for Improvement of Oncolytic Virus Efficacy","authors":"Nasrin Rastegarvand, H. Soleimanjahi, E. Arefian, M. Pourkarim","doi":"10.1155/2022/5756131","DOIUrl":"https://doi.org/10.1155/2022/5756131","url":null,"abstract":"Purpose. Oncolytic Reoviruses, as a self-limiting virus, can be used in cancer treatment, because they have the ability to replicate in tumor cells selectively and destroy them. Studies show that some immune response proteins may interfere with the virus life cycle. So, the main aim of this bioinformatic study is to check which microRNA is able to target some reovirus inhibitory proteins. Experimental Design. By use of online bioinformatics software, the microRNAs that could target inhibitory genes were selected. Then, other features like content ++ score and cell type were checked and finally the eligible microRNAs were determined. Results. After choosing 15 inhibitory proteins, analysis was performed and finally 37 microRNAs which could target inhibitory proteins in colorectal cell lines were selected. In the end, by investigation of web-based tools, just two microRNAs were finalized. Conclusions and Clinical Relevance. This bioinformatic study shows that microRNA-140 and microRNA-92a have the potential to target some inhibitory proteins which interfere with oncolytic Reovirus replication and it may help in the optimal use of this virus as a cancer treatment. Because selective reproduction of Reovirus in tumor cells, as a nonchemical therapy, can be a good way to overcome this disease with broad advantages.","PeriodicalId":9844,"journal":{"name":"Cellular Microbiology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2022-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43769069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Status of COVID-19 Infection and Vaccination in People Aged 18 Years and over in a Town: A Cross-Sectional Study in Turkey","authors":"Volkan Medeni, İrem Medeni","doi":"10.1155/2022/9996615","DOIUrl":"https://doi.org/10.1155/2022/9996615","url":null,"abstract":"Objective. The objective of this study was to evaluate the cases of COVID-19 infection in people >18 years old and to investigate attitudes against vaccination and vaccine hesitancy and the factors affecting them. Methods. The data collection form used in the study was prepared by the researchers by screening the relevant literature. People over the age of 18 who agreed to participate in the study were invited to the family health center, and a questionnaire was applied by face-to-face interview method. The application time of a survey was 5-10 minutes. A total of 229 people were reached. Percentage of reaching was 95,4%. Results. The mean age of the participants was \u0000 \u0000 44\u0000 ,\u0000 13\u0000 ±\u0000 14\u0000 ,\u0000 18\u0000 \u0000 years. 31,9% of the participants in the study had COVID-19 infections. 69,9% of those who had COVID-19 infection caught the disease in the last year, and 93,2% were followed at home. Among the people with whom the participants lived, 21,6% of those who had COVID-19 infection were hospitalized and 5,7% died. Of the participants who expressed their opinion, 32,1% think that COVID-19 vaccines have serious side effects. Postvaccine side effects developed in 32,9% of the participants who had the COVID-19 vaccine, and 11,0% had a postvaccine infection. Conclusion. The results of our study revealed that the COVID-19 vaccine was highly accepted among the adult population in Turkey during the pandemic period. However, through this study, we found concerns about the side effects of the vaccine, the lack of confidence in the vaccine ingredient, and the effectiveness of the vaccine.","PeriodicalId":9844,"journal":{"name":"Cellular Microbiology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42766658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Severe Inflammation Caused by Coinfection of PCV2 and Glaesserella parasuis Is Associated with Pyroptosis via Noncanonical Inflammasome Pathway","authors":"Jiahui An, Chao Zhang, Jinshuang Cai, Yufeng Li","doi":"10.1155/2022/7227099","DOIUrl":"https://doi.org/10.1155/2022/7227099","url":null,"abstract":"Coinfections of porcine circovirus type 2 (PCV2) and Glaesserella parasuis (G. parasuis) are widely existing in the swine industry worldwide. However, the mechanisms for this coinfection remain unclear. The aim of this study is to assess whether the coinfection PCV2 and G. parasuis would affect the inflammatory response and related mechanisms. In this study, BALB/c mice and RAW264.7 cells were used to study the inflammation and related mechanism caused by the coinfection of PCV2 and G. parasuis. Coinfection with PCV2 and G. parasuis significantly increased the mortality of mice and led to the development of more severe lung and spleen lesions compared with single agent infection. Especially, coinfection significantly increased the bacterial loads in the lungs. Coinfection with PCV2 and G. parasuis can enhance RAW264.7 cell phagocytosis and elimination to G. parasuis. Cell death rate of cells increased in coinfection was measured with Flow cytometry. Moreover, coinfection led to the downregulation of the expression of TNFα and IL-8 in comparison with G. parasuis infection, but the maturation of interleukin-1β (IL-1β) was significantly upregulated. Our study firstly revealed that coinfection of PCV2 and G. parasuis can increase the phagocytosis of cells to G. parasuis, and LPS in the cytoplasm will induce the maturation of caspase-11 and lead to the cleavage of Gasdermin D (GSDMD) to cause pyroptosis by noncanonical pathway. The revealing of mechanisms associated with coinfection with PCV2 and G. parasuis will provide a scientific basis for investigating the synergistic infection mechanisms between viruses and bacteria.","PeriodicalId":9844,"journal":{"name":"Cellular Microbiology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2022-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48107098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Deletion of a Putative GPI-Anchored Protein-Encoding Gene Aog185 Impedes the Growth and Nematode-Trapping Efficiency of Arthrobotrys oligospora by Disrupting Transmembrane Transport Homeostasis","authors":"Hui Peng, Hengqian Lu, Xinyuan Dong, Xiao Liang, Kangliang Sheng, Jingmin Wang, X. Kong, X. Zha, Yongzhong Wang","doi":"10.1155/2022/8738290","DOIUrl":"https://doi.org/10.1155/2022/8738290","url":null,"abstract":"Nematode-trapping fungus (NTF) is a crucial predator of nematodes, which can capture nematodes by developing specific trapping devices. However, there is limited understanding of the role and mechanism of cell surface proteins attached to the surface of mycelia or trapping cells. Here, the effects of a putative GPI-anchored protein-encoding gene Aog185 on the growth and nematode-trapping efficiency of A. oligospora were investigated. Compared to the wild-type (WT) strain, the ΔAog185 mutant grew more slowly, exhibited a 20% decrease in conidiation, delayed conidial germination, generated fewer traps, attenuated nematode trapping efficiency, and was more sensitive to chemical stressors. Transcriptomic analysis indicated that a large number of transmembrane transport-related genes were differentially expressed between the WT and ΔAog185 mutant strains. Aog185 deletion could damage the intrinsic components of the membrane and cytoskeleton. Specifically, knockout of Aog185 disrupted transmembrane transport homeostasis during the phagocytosis, cell autophagy, and oxidative phosphorylation processes, which were associated with the fusion of cells and organelle membranes, transport of ions and substrates, and energy metabolism. Hence, the putative GPI-anchored protein-encoding gene Aog185 may contribute to the lifestyle switch of NTF and nematode capture, and the effect of Aog185 gene on cell transmembrane transport is considered key to this process. Our findings provide new insights into the mechanism of Aog185 gene during the process of nematode trapping by NTF.","PeriodicalId":9844,"journal":{"name":"Cellular Microbiology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46290763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dorota Satala, Magdalena Juszczak, Ewelina Wronowska, Magdalena Surowiec, Kamila Kulig, Andrzej Kozik, Maria Rapala-Kozik, Justyna Karkowska-Kuleta
{"title":"Similarities and Differences among Species Closely Related to Candida albicans: C. tropicalis, C. dubliniensis, and C. auris","authors":"Dorota Satala, Magdalena Juszczak, Ewelina Wronowska, Magdalena Surowiec, Kamila Kulig, Andrzej Kozik, Maria Rapala-Kozik, Justyna Karkowska-Kuleta","doi":"10.1155/2022/2599136","DOIUrl":"https://doi.org/10.1155/2022/2599136","url":null,"abstract":"Although <i>Candida</i> species are widespread commensals of the microflora of healthy individuals, they are also among the most important human fungal pathogens that under certain conditions can cause diseases (candidiases) of varying severity ranging from mild superficial infections of the mucous membranes to life-threatening systemic infections. So far, the vast majority of research aimed at understanding the molecular basis of pathogenesis has been focused on the most common species—<i>Candida albicans</i>. Meanwhile, other closely related species belonging to the CTG clade, namely, <i>Candida tropicalis</i> and <i>Candida dubliniensis</i>, are becoming more important in clinical practice, as well as a relatively newly identified species, <i>Candida auris</i>. Despite the close relationship of these microorganisms, it seems that in the course of evolution, they have developed distinct biochemical, metabolic, and physiological adaptations, which they use to fit to commensal niches and achieve full virulence. Therefore, in this review, we describe the current knowledge on <i>C. tropicalis</i>, <i>C. dubliniensis</i>, and <i>C. auris</i> virulence factors, the formation of a mixed species biofilm and mutual communication, the environmental stress response and related changes in fungal cell metabolism, and the effect of pathogens on host defense response and susceptibility to antifungal agents used, highlighting differences with respect to <i>C. albicans</i>. Special attention is paid to common diagnostic problems resulting from similarities between these species and the emergence of drug resistance mechanisms. Understanding the different strategies to achieve virulence, used by important opportunistic pathogens of the genus <i>Candida</i>, is essential for proper diagnosis and treatment.","PeriodicalId":9844,"journal":{"name":"Cellular Microbiology","volume":"58 218","pages":""},"PeriodicalIF":3.4,"publicationDate":"2022-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138518986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Ashrafuzzaman, M. H. Razu, N. Showva, T. A. Bondhon, M. Moniruzzaman, Sad Al Rezwan Rahman, Md. Raisul Islam Rabby, F. Akter, Mala Khan
{"title":"Biomolecules of the Horseshoe Crab’s Hemolymph: Components of an Ancient Defensive Mechanism and Its Impact on the Pharmaceutical and Biomedical Industry","authors":"M. Ashrafuzzaman, M. H. Razu, N. Showva, T. A. Bondhon, M. Moniruzzaman, Sad Al Rezwan Rahman, Md. Raisul Islam Rabby, F. Akter, Mala Khan","doi":"10.1155/2022/3381162","DOIUrl":"https://doi.org/10.1155/2022/3381162","url":null,"abstract":"Without adaptive immunity, invertebrates have evolved innate immune systems that react to antigens on the surfaces of pathogens. These defense mechanisms are included in horseshoe crab hemocytes’ cellular responses to pathogens. Secretory granules, large (L) and small (S), are found on hemocytes. Once the invasion of pathogens is present, these granules release their contents through exocytosis. Recent data in biochemistry and immunology on the granular constituents of granule-specific proteins are stored in large and small granules which are involved in the cell-mediated immune response. L-granules contain most clotting proteins, which are necessary for hemolymph coagulation. They also include tachylectins; protease inhibitors, such as cystatin and serpins; and anti-lipopolysaccharide (LPS) factors, which bind to LPS and agglutinate bacteria. Big defensin, tachycitin, tachystatin, and tachyplesins are some of the essential cysteine-rich proteins in S-granules. These granules also contain tachycitin and tachystatins, which can agglutinate bacteria. These proteins in granules and hemolymph act synergistically to fight infections. These biomolecules are antimicrobial and antibacterial, enabling them to be drug resistant. This review is aimed at explaining the biomolecules identified in the horseshoe crab’s hemolymph and their application scopes in the pharmaceutical and biotechnology sectors.","PeriodicalId":9844,"journal":{"name":"Cellular Microbiology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45041757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yineng Han, P. Gao, Qiaolin Yang, Yiping Huang, L. Jia, Yunfei Zheng, Weiran Li
{"title":"Pasteurella multocida Toxin Aggravates Ligatured-Induced Periodontal Bone Loss and Inflammation via NOD-Like Receptor Protein 3 Inflammasome","authors":"Yineng Han, P. Gao, Qiaolin Yang, Yiping Huang, L. Jia, Yunfei Zheng, Weiran Li","doi":"10.1155/2022/3305695","DOIUrl":"https://doi.org/10.1155/2022/3305695","url":null,"abstract":"NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome is reportedly involved in periodontal pathogenesis. Pasteurella multocida toxin (PMT) is the major virulence factor of Pasteurella multocida strains, which belongs to the nonoral gram-negative facultative rods (GNFR). The existence of GNFR and their toxin may aggravate periodontitis. Therefore, it is important to unclose the regulatory mechanisms of PMT in periodontitis. However, the involvement of NLRP3 inflammasome and PMT in periodontitis remain unclear. The results showed that NLRP3 expression was increased in periodontitis mice by immunohistochemical staining and quantitative reverse transcription polymerase chain reaction (qRT-PCR). Nlrp3-/- mice showed less periodontal bone loss and lower abundances of Pasteurella multocida by 16S rRNA sequencing. PMT promoted NLRP3 expressions by activating nuclear factor kappa light chain enhancer of B cells (NF-κB) pathway and activated NLRP3 inflammasome. This effect was reversed by NLRP3 inhibitor MCC950. Furthermore, PMT aggravated periodontal bone loss and inflammation in WT mice, while MCC950 attenuated periodontal bone loss and inflammation. The Nlrp3-/- periodontitis models with PMT local injection showed less bone loss and inflammation compared with WT periodontitis mice after PMT treatment. Taken together, our results showed that PMT aggravates periodontal response to the ligature by promoting NLRP3 expression and activating NLRP3 inflammasome, suggesting that NLRP3 may be an effective target for the treatment of periodontitis caused by GNFR and MCC950 may be a potential drug against this disease.","PeriodicalId":9844,"journal":{"name":"Cellular Microbiology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2022-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48645724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}