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Su L, Yang R, Sheng Y, Ullah S, Zhao Y, Shunjiayi H, Zhao Z, Wang Q. Insights into the oral microbiota in human systemic cancers. Front Microbiol 2024; 15:1369834. [PMID: 38756728 PMCID: PMC11098135 DOI: 10.3389/fmicb.2024.1369834] [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: 01/13/2024] [Accepted: 04/11/2024] [Indexed: 05/18/2024] Open
Abstract
The oral cavity stands as one of the pivotal interfaces facilitating the intricate interaction between the human body and the external environment. The impact of diverse oral microorganisms on the emergence and progression of various systemic cancers, typified by oral cancer, has garnered increasing attention. The potential pathogenicity of oral bacteria, notably the anaerobic Porphyromonas gingivalis and Fusobacterium nucleatum, has been extensively studied and exhibits obvious correlation with different carcinoma types. Furthermore, oral fungi and viruses are closely linked to oropharyngeal carcinoma. Multiple potential mechanisms of oral microbiota-induced carcinogenesis have been investigated, including heightened inflammatory responses, suppression of the host immune system, influence on the tumor microenvironment, anti-apoptotic activity, and promotion of malignant transformation. The disturbance of microbial equilibrium and the migration of oral microbiota play a pivotal role in facilitating oncogenic functions. This review aims to comprehensively outline the pathogenic mechanisms by which oral microbiota participate in carcinogenesis. Additionally, this review delves into their potential applications in cancer prevention, screening, and treatment. It proves to be a valuable resource for researchers investigating the intricate connection between oral microbiota and systemic cancers.
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Affiliation(s)
- Lan Su
- Key Laboratory of Artificial Organs and Computational Medicine in Zhejiang Province, Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang, China
| | - Rui Yang
- Key Laboratory of Artificial Organs and Computational Medicine in Zhejiang Province, Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang, China
| | - Yanan Sheng
- Key Laboratory of Artificial Organs and Computational Medicine in Zhejiang Province, Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang, China
| | - Saif Ullah
- Department of Microbiology School of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Yuheng Zhao
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou, Zhejiang, China
| | - Hu Shunjiayi
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Zhuo Zhao
- Department of Computer Science and Engineering, University of Notre Dame, Notre Dame, IN, United States
| | - Qingjing Wang
- Key Laboratory of Artificial Organs and Computational Medicine in Zhejiang Province, Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang, China
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Shi S, Liu Y, Wang Z, Jin X, Yan W, Guo X, Lin B, Wang H, Li B, Zheng J, Wei Y. Fusobacterium nucleatum induces colon anastomosis leak by activating epithelial cells to express MMP9. Front Microbiol 2022; 13:1031882. [PMID: 36590433 PMCID: PMC9794562 DOI: 10.3389/fmicb.2022.1031882] [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: 08/30/2022] [Accepted: 11/17/2022] [Indexed: 12/15/2022] Open
Abstract
Background Despite advances in anastomotic techniques and perioperative care, the incidence of anastomotic leak (AL) has not substantially decreased over time. Although it is known that AL etiology is multifactorial and the mechanisms involved remain unclear, there is accumulating evidence pointing at AL related to gut microbiota. Method We firstly performed a clinical study to analyze the gut microbiota between colorectal cancer patients who developed AL and those who did not (nAL) using 16S-rRNA sequencing and quantitative real-time PCR to identify AL risk bacterial taxa. Then we built a rat anastomosis model and performed a bacteria transplantation to ensure the cause-effect relationship. The anastomotic healing score was used to evaluate the healing of anastomosis. In addition, we assessed the adhesion ability of bacteria by staining with fluorescein isothiocyanate and attachment assay. The expression of matrix metalloproteinase 9 (MMP9) was detected by western blot, and the activity was detected by gelatin zymography. Results We found that the abundance and positive rate of Fusobacterium nucleatum (Fn) were higher in the AL patients. Exposure of the rat's colon anastomosis to Fn contributes to the loss of submucosa collagen I and III, leading to AL's pathogenesis. Fn can attach to the gut epithelial cells and stimulate intestinal MMP9 expression in vitro and in vivo. We further confirmed that these effects of Fn depended on the E-cadherin/β-catenin signaling pathway. Conclusion This work demonstrates that Fn attaches and then stimulates the expression of epithelial cells MMP9 by the E-cadherin/β-catenin signaling pathway. These effects contribute to collagen break down in the intestinal tissue, finally leading to AL.
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Affiliation(s)
- Shang Shi
- Oncology and Laparoscopy Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China,Pancreatic and Gastrointestinal Surgery Division, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China
| | - Yang Liu
- Pancreatic and Gastrointestinal Surgery Division, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China,Ningbo Clinical Research Center for Digestive System Tumors, Ningbo, China
| | - Zhiyue Wang
- Oncology and Laparoscopy Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xiangren Jin
- Oncology and Laparoscopy Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Wei Yan
- Oncology and Laparoscopy Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xiao Guo
- Oncology and Laparoscopy Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Baiqiang Lin
- Oncology and Laparoscopy Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Haoran Wang
- Oncology and Laparoscopy Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Bowen Li
- Oncology and Laparoscopy Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jianjun Zheng
- Imaging Center, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China,Ningbo Clinical Medical Research Center of Imaging Medicine, Ningbo, China,Jianjun Zheng,
| | - Yunwei Wei
- Pancreatic and Gastrointestinal Surgery Division, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China,Ningbo Clinical Research Center for Digestive System Tumors, Ningbo, China,*Correspondence: Yunwei Wei,
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Proinflammatory and Cancer-Promoting Pathobiont Fusobacterium nucleatum Directly Targets Colorectal Cancer Stem Cells. Biomolecules 2022; 12:biom12091256. [PMID: 36139097 PMCID: PMC9496236 DOI: 10.3390/biom12091256] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/30/2022] [Accepted: 09/05/2022] [Indexed: 11/24/2022] Open
Abstract
Intestinal bacterial communities participate in gut homeostasis and are recognized as crucial in bowel inflammation and colorectal cancer (CRC). Fusobacterium nucleatum (Fn), a pathobiont of the oral microflora, has recently emerged as a CRC-associated microbe linked to disease progression, metastasis, and a poor clinical outcome; however, the primary cellular and/or microenvironmental targets of this agent remain elusive. We report here that Fn directly targets putative colorectal cancer stem cells (CR-CSCs), a tumor cell subset endowed with cancer re-initiating capacity after surgery and chemotherapy. A patient-derived CSC line, highly enriched (70%) for the stem marker CD133, was expanded as tumor spheroids, dissociated, and exposed in vitro to varying amounts (range 100–500 MOI) of Fn. We found that Fn stably adheres to CSCs, likely by multiple interactions involving the tumor-associated Gal-GalNac disaccharide and the Fn-docking protein CEA-family cell adhesion molecule 1 (CEACAM-1), robustly expressed on CSCs. Importantly, Fn elicited innate immune responses in CSCs and triggered a growth factor-like, protein tyrosine phosphorylation cascade largely dependent on CEACAM-1 and culminating in the activation of p42/44 MAP kinase. Thus, the direct stimulation of CSCs by Fn may contribute to microbiota-driven colorectal carcinogenesis and represent a target for innovative therapies.
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Heusler M, Einenkel R, Ehrhardt J, Muzzio DO, Zygmunt M. Low Abundance Fusobacterium Nucleatum Supports Early Pregnancy Development - An In Vitro Study. Front Immunol 2021; 12:698045. [PMID: 34531854 PMCID: PMC8438310 DOI: 10.3389/fimmu.2021.698045] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 08/13/2021] [Indexed: 01/12/2023] Open
Abstract
Pregnancy success depends greatly on a balanced immune homeostasis. The detection of bacterial components in the upper reproductive tract in non-pregnant and pregnant women raised questions on its possible beneficial role in reproductive health. The local conditions that allow the presence of bacteria to harmonize with the establishment of pregnancy are still unknown. Among the described bacterial species in endometrial and placental samples, Fusobacterium nucleatum was found. It has been observed that F. nucleatum can induce tumorigenesis in colon carcinoma, a process that shares several features with embryo implantation. We propose that low concentrations of F. nucleatum may improve trophoblast function without exerting destructive responses. Inactivated F. nucleatum and E. coli were incubated with the trophoblastic cell lines HTR8/SVneo, BeWo, and JEG-3. Viability, proliferation, migratory capacity, invasiveness and the secretion of chemokines, other cytokines and matrix metalloproteinases were assessed. The presence of F. nucleatum significantly induced HTR8/SVneo invasion, accompanied by the secretion of soluble mediators (CXCL1, IL-6 and IL-8) and metalloproteinases (MMP-2 and MMP-9). However, as concentrations of F. nucleatum increased, these did not improve invasiveness, hindered migration, reduced cell viability and induced alterations in the cell cycle. Part of the F. nucleatum effects on cytokine release were reverted with the addition of a TLR4 blocking antibody. Other effects correlated with the level of expression of E-cadherin on the different cell lines tested. Low amounts of F. nucleatum promote invasion of HTR8/SVneo cells and induce the secretion of important mediators for pregnancy establishment. Some effects were independent of LPS and correlated with the expression of E-cadherin on trophoblasts.
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Affiliation(s)
- Martha Heusler
- Department of Obstetrics and Gynecology, University of Greifswald, Greifswald, Germany
| | - Rebekka Einenkel
- Department of Obstetrics and Gynecology, University of Greifswald, Greifswald, Germany
| | - Jens Ehrhardt
- Department of Obstetrics and Gynecology, University of Greifswald, Greifswald, Germany
| | - Damián Oscar Muzzio
- Department of Obstetrics and Gynecology, University of Greifswald, Greifswald, Germany
| | - Marek Zygmunt
- Department of Obstetrics and Gynecology, University of Greifswald, Greifswald, Germany
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Marre ATDO, Domingues RMCP, Lobo LA. Adhesion of anaerobic periodontal pathogens to extracellular matrix proteins. Braz J Microbiol 2020; 51:1483-1491. [PMID: 32557245 PMCID: PMC7688880 DOI: 10.1007/s42770-020-00312-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 05/29/2020] [Indexed: 02/06/2023] Open
Abstract
Extracellular matrix (ECM) proteins are highly abundant in the human body and can be found in various tissues, most prominently in connective tissue and basement membrane. For invasive bacterial pathogens, these structures function as physical barriers that block access to underlying tissues. The ability to bind and degrade these barriers is important for the establishment of infections and migration to other body sites. In the oral cavity, the ECM and the basement membrane (BM) are important components of the Junctional epithelium (JE) that closes the gap between the teeth surface and the mucosa. In periodontitis, the JE is breached by invading pathogenic bacteria, particularly strict anaerobic species. In periodontitis, invading microorganisms induce an unregulated and destructive host response through polymicrobial synergism and dysbiosis that attracts immune cells and contributes to the destruction of connective tissue and bone in the periodontal pocket. Colonization of the periodontal pocket is the first step to establish this infection, and binding to ECM is a major advantage in this site. Several species of strict anaerobic bacteria are implicated in acute and chronic periodontitis, and although binding to ECM proteins was studied in these species, few adhesins were identified so far, and the mechanisms involved in adhesion are largely unidentified. This review summarizes the data available on the interaction of strict anaerobic bacteria and components of the ECM.
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Affiliation(s)
- Andressa Temperine de Oliveira Marre
- Medical Microbiology Department, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro - UFRJ, CCS - Centro de Ciências da Saúde, 373 Avenida Carlos Chagas Filho, Bloco I - sala I2-06, Cidade Universitária, Rio de Janeiro, 21941-902, Brazil
| | - Regina M C P Domingues
- Medical Microbiology Department, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro - UFRJ, CCS - Centro de Ciências da Saúde, 373 Avenida Carlos Chagas Filho, Bloco I - sala I2-06, Cidade Universitária, Rio de Janeiro, 21941-902, Brazil
| | - Leandro A Lobo
- Medical Microbiology Department, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro - UFRJ, CCS - Centro de Ciências da Saúde, 373 Avenida Carlos Chagas Filho, Bloco I - sala I2-06, Cidade Universitária, Rio de Janeiro, 21941-902, Brazil.
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Wang Q, Yu C, Yue C, Liu X. Fusobacterium nucleatum produces cancer stem cell characteristics via EMT-resembling variations. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2020; 13:1819-1828. [PMID: 32782710 PMCID: PMC7414483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 04/28/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To explore the involvement of epithelial-mesenchymal transition (EMT) and cancer stem cell (CSC) characteristics induced by Fusobacterium nucleatum (Fn) in colorectal cancer (CRC) in vitro. METHODS SW480 and HCT116 cells were co-cultivated with Fn. Western blot (WB) and real-time PCR were used for detecting EMT markers' expression. CSC-resembling phenotypes were observed through migration, intrusion, and spherical colony formation assays. Flow cytometry was employed for sorting, based on the expression of CD44. RESULTS It was displayed that Fn infection was responsible for an EMT phenotype associated with an increase in mesenchymal markers (Snail1, Vimentin, and ZEB1) as well as CD44 expression. Fn treatment induced stronger expressions of such markers when MOI increased. Furthermore, infection resulted in augmented migration, intrusion, and tumorsphere formation capacities. Cell classification implicated that mere CD44high cells exhibited CSC characteristics and mesenchymal phenotype (MP) in vitro, accompanied with augmented tumor-causing capacity over CD44low cells. Finally, we demonstrated IL-6/STAT3 pathway was involved in EMT-CSC-resembling behavior of CRC cells. CONCLUSION All of these data suggest that Fn reveals CSC-resembling characteristics through activating IL-6/STAT3 and eliciting EMT-resembling variations in colorectal epithelial cells (CECs).
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Affiliation(s)
- Qin Wang
- Department of Clinical Medicine, Jiangsu Health Vocational CollegeNanjing, China
| | - Chen Yu
- Department of Integrated Traditional Chinese and Western Medicine, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical UniversityNanjing, China
| | - Chao Yue
- Department of General Surgery, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical UniversityNanjing, China
| | - Xin Liu
- Department of Prevention and Control for Occupational Disease, Jiangsu Provincial Center for Disease Prevention and ControlNanjing, China
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Ren Z, Dong Z, Xie P, Lv J, Hu Y, Guan Z, Zhang C, Yu W. PNU282987 inhibits amyloid‑β aggregation by upregulating astrocytic endogenous αB‑crystallin and HSP‑70 via regulation of the α7AChR, PI3K/Akt/HSF‑1 signaling axis. Mol Med Rep 2020; 22:201-208. [PMID: 32377707 PMCID: PMC7248489 DOI: 10.3892/mmr.2020.11132] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 03/23/2020] [Indexed: 01/04/2023] Open
Abstract
Alzheimer's disease (AD) is a chronic and irreversible neurodegenerative disorder. Abnormal aggregation of the neurotoxic amyloid-β (Aβ) peptide is an early event in AD. The activation of astrocytic α7 nicotinic acetylcholine receptor (α7 nAChR) can inhibit Aβ aggregation; thus, the molecular mechanism between α7 nAChR activation and Aβ aggregation warrants further investigation. In the present study, Aβ oligomer levels were assessed in astrocytic cell lysates after treatment with PNU282987 (a potent agonist of α7 nAChRs) or co-treatment with LY294002, a p-Akt inhibitor. The levels of heat shock factor-1 (HSF-1), heat shock protein 70 (HSP-70), and αB-crystallin (Cryab) in astrocytes treated with PNU282987 at various time-points or co-treated with methyllycaconitine (MLA), a selective α7 nAChR antagonist, as well as co-incubated with LY294002 were determined by western blotting. HSP-70 and Cryab levels were determined after HSF-1 knockdown (KD) in astrocytes. PNU282987 markedly inhibited Aβ aggregation and upregulated HSF-1, Cryab, and HSP-70 in primary astrocytes, while the PNU282987-mediated neuroprotective effect was reversed by pre-treatment with MLA or LY294002. Moreover, the HSF-1 KD in astrocytes effectively decreased Cryab, but not HSP-70 expression. HSF-1 is necessary for the upregulation of Cryab expression, but not for that of HSP-70. HSF-1 and HSP-70 have a neuroprotective effect. Furthermore, the neuroprotective effect of PNU282987 against Aβ aggregation was mediated by the canonical PI3K/Akt signaling pathway activation.
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Affiliation(s)
- Zhenkui Ren
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, College of Basic Medical Sciences, Guiyang, Guizhou 550004, P.R. China
| | - Zhihui Dong
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, College of Basic Medical Sciences, Guiyang, Guizhou 550004, P.R. China
| | - Peng Xie
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, College of Basic Medical Sciences, Guiyang, Guizhou 550004, P.R. China
| | - Ju Lv
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, College of Basic Medical Sciences, Guiyang, Guizhou 550004, P.R. China
| | - Yumei Hu
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, College of Basic Medical Sciences, Guiyang, Guizhou 550004, P.R. China
| | - Zhizhong Guan
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, College of Basic Medical Sciences, Guiyang, Guizhou 550004, P.R. China
| | - Chunlin Zhang
- College of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou 550025, P.R. China
| | - Wenfeng Yu
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, College of Basic Medical Sciences, Guiyang, Guizhou 550004, P.R. China
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Ren Z, Yang M, Guan Z, Yu W. Astrocytic α7 Nicotinic Receptor Activation Inhibits Amyloid-β Aggregation by Upregulating Endogenous αB-crystallin through the PI3K/Akt Signaling Pathway. Curr Alzheimer Res 2020; 16:39-48. [PMID: 30345917 DOI: 10.2174/1567205015666181022093359] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 08/26/2018] [Accepted: 10/15/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND β-amyloid (Aβ) aggregation plays an important role in the pathogenesis of Alzheimer's disease (AD), and astrocytes can significantly inhibit Aβ aggregation. Astrocytic α7 Neuronal Nicotinic Acetylcholine Receptor (nAChR) upregulation detected in the AD brains is closely associated with Aβ deposits. However, the relationships between the astrocytic α7 nAChRs and Aβ aggregation remain unclear. METHODS The Aβ oligomers levels in astrocytic cell lysates and culture medium were measured after treatment with nicotine or co-treatment with a Phosphatidylinositol 3-Kinase (PI3K)-protein kinase B (Akt) inhibitor. The level of αB-Crystallin (Cryab) in astrocytes treated with nicotine for different times or co-treated with α7 nAChR antagonists as well as co-incubated with a PI3K or mitogen-activated protein kinase kinase 1/2 (MEK1/2) inhibitor was determined by western blotting. RESULTS In this study, nicotine pre-treatment in primary astrocytes markedly inhibited Aβ aggregation and upregulated endogenous astrocytic Cryab, while the nicotine-mediated neuroprotective effect was reversed by pre-treatment with a selective α7 nAChR antagonist. Furthermore, this neuroprotection against Aβ aggregation was suppressed by LY294002, a PI3K inhibitor. Pre-treatment with nicotine significantly increased the levels of phosphorylated Akt, an effector of PI3K in astrocytes. CONCLUSION α7 nAChR activation and PI3K/Akt signaling transduction contributed to nicotinemediated neuroprotection against Aβ aggregation by modulating endogenous astrocytic Cryab.
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Affiliation(s)
- Zhenkui Ren
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guiyang 550004, China.,Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang 550004, China
| | - Mei Yang
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guiyang 550004, China.,Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang 550004, China
| | - Zhizhong Guan
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guiyang 550004, China.,Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang 550004, China.,Department of Pathology, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - Wenfeng Yu
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guiyang 550004, China.,Key Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang 550004, China
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Hirschfeld J, Howait M, Movila A, Parčina M, Bekeredjian-Ding I, Deschner J, Jepsen S, Kawai T. Assessment of the involvement of the macrophage migration inhibitory factor-glucocorticoid regulatory dyad in the expression of matrix metalloproteinase-2 during periodontitis. Eur J Oral Sci 2017; 125:345-354. [PMID: 28776753 DOI: 10.1111/eos.12363] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Macrophage migration inhibitory factor (MIF) is a proinflammatory cytokine and counter-regulator of endogenous glucocorticoids (GCs). It is implicated in acute and chronic inflammatory diseases. This study investigated the role of the MIF-GC regulatory dyad in the expression and release of matrix metalloproteinase-2 (MMP-2) during periodontitis, in vivo and in vitro. In a Mif-knockout (KO) mouse model of ligature-induced periodontitis, gingival tissues and blood were collected and analysed for levels of interleukin-6 (IL-6), MIF, MMP-2, and corticosterone. In addition, human gingival fibroblasts (HGFs) were tested for production of IL-6 and MMP-2 after stimulation with hydrocortisone (HC), MIF, tumour necrosis factor-alpha (TNF-α), or Fusobacterium nucleatum, a pathogen known to elicit immune responses during periodontitis. Wild-type (WT) mice showed a local and systemic increase of MIF levels during inflammation, which was confirmed by increased local IL-6 concentrations. Systemic GC levels were reduced in WT and Mif-KO mice during inflammation, with overall lower concentrations in Mif-KO mice. In vivo and in vitro, MMP-2 production was not dependent on MIF or inflammatory stimuli, but was inhibited by HC. Therefore, MIF does not appear to stimulate expression of MMP-2 in the gingival tissues, whereas GC upregulates MIF and downregulates MMP-2. Our findings further suggest that MIF may regulate systemic GC levels.
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Affiliation(s)
- Josefine Hirschfeld
- Department of Periodontology, Operative and Preventive Dentistry, University Hospital Bonn, Bonn, Germany.,Periodontal Research Group, Birmingham Dental School and Hospital, Birmingham, UK
| | - Mohammed Howait
- Faculty of Dentistry, Department of Endodontics, King AbdulAziz University, Jeddah, Saudi Arabia.,Department of Immunology and Infectious Diseases, The Forsyth Institute, Cambridge, MA, USA
| | - Alexandru Movila
- Department of Immunology and Infectious Diseases, The Forsyth Institute, Cambridge, MA, USA.,Harvard University School of Dental Medicine, Boston, MA, USA.,Academy of Sciences of Moldova, Institute of Zoology, Chisinau, Moldova
| | - Marijo Parčina
- Institute of Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany
| | - Isabelle Bekeredjian-Ding
- Institute of Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany.,Division of Microbiology, Paul-Ehrlich-Institut, Langen, Germany
| | - James Deschner
- Section Experimental Dento-Maxillo-Facial Medicine, University Hospital Bonn, Bonn, Germany
| | - Søren Jepsen
- Department of Periodontology, Operative and Preventive Dentistry, University Hospital Bonn, Bonn, Germany
| | - Toshihisa Kawai
- Department of Immunology and Infectious Diseases, The Forsyth Institute, Cambridge, MA, USA.,College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL, USA
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Singh B, Fleury C, Jalalvand F, Riesbeck K. Human pathogens utilize host extracellular matrix proteins laminin and collagen for adhesion and invasion of the host. FEMS Microbiol Rev 2012; 36:1122-80. [PMID: 22537156 DOI: 10.1111/j.1574-6976.2012.00340.x] [Citation(s) in RCA: 206] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2011] [Revised: 02/08/2012] [Accepted: 03/29/2012] [Indexed: 01/11/2023] Open
Abstract
Laminin (Ln) and collagen are multifunctional glycoproteins that play an important role in cellular morphogenesis, cell signalling, tissue repair and cell migration. These proteins are ubiquitously present in tissues as a part of the basement membrane (BM), constitute a protective layer around blood capillaries and are included in the extracellular matrix (ECM). As a component of BMs, both Lns and collagen(s), thus function as major mechanical containment molecules that protect tissues from pathogens. Invasive pathogens breach the basal lamina and degrade ECM proteins of interstitial spaces and connective tissues using various ECM-degrading proteases or surface-bound plasminogen and matrix metalloproteinases recruited from the host. Most pathogens associated with the respiratory, gastrointestinal, or urogenital tracts, as well as with the central nervous system or the skin, have the capacity to bind and degrade Lns and collagen(s) in order to adhere to and invade host tissues. In this review, we focus on the adaptability of various pathogens to utilize these ECM proteins as enhancers for adhesion to host tissues or as a targets for degradation in order to breach the cellular barriers. The major pathogens discussed are Streptococcus, Staphylococcus, Pseudomonas, Salmonella, Yersinia, Treponema, Mycobacterium, Clostridium, Listeria, Porphyromonas and Haemophilus; Candida, Aspergillus, Pneumocystis, Cryptococcus and Coccidioides; Acanthamoeba, Trypanosoma and Trichomonas; retrovirus and papilloma virus.
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Affiliation(s)
- Birendra Singh
- Medical Microbiology, Department of Laboratory Medicine Malmö, Skåne University Hospital, Lund University, Malmö, Sweden
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Nohrström E, Mattila T, Pettilä V, Kuusela P, Carlson P, Kentala E, Mattila PS. Clinical spectrum of bacteraemic Fusobacterium infections: from septic shock to nosocomial bacteraemia. ACTA ACUST UNITED AC 2011; 43:463-70. [PMID: 21391770 DOI: 10.3109/00365548.2011.565071] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Fusobacterium species are anaerobic bacteria that relatively rarely cause sepsis with a variable clinical presentation. METHODS We reviewed the records of 52 consecutive patients who had Fusobacterium bacteraemia over a 10-y period. RESULTS The clinical pictures could be classified into 4 groups: (1) patients who had Lemierre's syndrome with Fusobacterium necrophorum sepsis and internal jugular vein thrombosis, n = 5 (10%); (2) previously healthy patients who had F. necrophorum sepsis without any signs of macroscopic vascular thrombosis (but 5 of them had abscesses), n = 14 (27%); (3) women who had puerperal infections, n = 6 (12%); and (4) patients who were on average older than the patients in the previous groups, who had cardiovascular, pulmonary, neoplastic, or other underlying diseases, n = 27 (52%). Of these latter 27 patients, 23 had nosocomial Fusobacterium nucleatum bacteraemia presenting as a febrile illness associated with chemotherapy or instrumentation. CONCLUSIONS Patients with chronic underlying diseases are more likely to be infected with F. nucleatum than F. necrophorum. F. nucleatum bacteraemia may present as a febrile illness without severe symptoms. F. necrophorum caused sepsis mainly in previously healthy individuals. These infections may be accompanied with a jugular vein thrombosis characteristic of Lemierre's syndrome and septic shock. However, F. necrophorum infections present more frequently without any apparent venous thrombosis and may be accompanied by abscesses.
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Affiliation(s)
- Elina Nohrström
- Department of Otorhinolaryngology, Helsinki University Central Hospital, Haartmaninkatu, Helsinki, Finland
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Grenier D, Bouclin R. Contribution of proteases and plasmin-acquired activity in migration of Peptostreptococcus micros through a reconstituted basement membrane. ACTA ACUST UNITED AC 2006; 21:319-25. [PMID: 16922932 DOI: 10.1111/j.1399-302x.2006.00298.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND/AIMS Peptostreptococcus micros is a gram-positive bacterium that has been associated with chronic periodontitis and endodontic infections. The aims of this study were to investigate the production of proteases and the acquisition of plasmin activity by rough and smooth morphotypes of P. micros. The contribution of these properties in the migration of bacteria through a reconstituted basement membrane was also evaluated. METHODS Protease activities were determined using chromogenic and fluorogenic substrates as well as by zymography. Plasminogen binding activity was studied using an enzyme-linked immunosorbent assay. The role of proteases and plasmin-acquired activity in tissue penetration was investigated using Matrigel. RESULTS The rough morphotype strains of P. micros, but not the smooth morphotype strains, were found to possess chymotrypsin-like and gelatinase activities, both of which were inhibited by a serine protease inhibitor. By zymography, three gelatinase bands (165, 129, and 115 kDa) were identified. Both morphotypes of P. micros can bind human plasminogen on their cell surface. Once bound to P. micros, plasminogen activators of bacterial (streptokinase) and human (urokinase) origins were found to activate plasminogen into plasmin. Our results also showed that plasmin activity can be acquired by P. micros following co-incubation with human brain microvascular endothelial cells in culture. When non-coated cells were used, the rough morphotype strain (HG1262), which possesses chymotrypsin-like and gelatinase activities, showed a better capacity to penetrate a reconstituted basement membrane (Matrigel) than the smooth morphotype strain (HG1251). Penetration of the Matrigel by P. micros HG1262 was inhibited by the presence of a serine protease inhibitor. In addition, cells of P. micros with plasmin activity showed a significantly greater tissue penetration capacity. CONCLUSION Our study suggests that endogenous proteolytic activities of P. micros as well as plasmin-acquired activity, may facilitate dissemination of bacterial cells to surrounding periodontal tissues and blood vessels.
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Affiliation(s)
- D Grenier
- Groupe de Recherche en Ecologie Buccale, Faculté de Médecine Dentaire, Université Laval, Quebec City, Quebec, Canada.
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Grenier D, Grignon L. Response of human macrophage-like cells to stimulation by Fusobacterium nucleatum ssp. nucleatum lipopolysaccharide. ACTA ACUST UNITED AC 2006; 21:190-6. [PMID: 16626377 DOI: 10.1111/j.1399-302x.2006.00278.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Monocytes/macrophages are key members of the innate immune system and are present in higher numbers in active periodontal lesions than in inactive sites. The aim of this study was to characterize the response of human monocyte U937 cells, differentiated into adherent macrophages by treatment with phorbol-12-myristate 13-acetate, to stimulation by Fusobacterium nucleatum ssp. nucleatum lipopolysaccharide. Attachment of (3)H-lipopolysaccharide to macrophage-like cells was partially inhibited by anti-CD14 and anti-TLR4 polyclonal antibodies. Fusobacterial lipopolysaccharide did not cause cell apoptosis or block apoptosis induced by camptothecin. Lipopolysaccharide up-regulated the secretion of the pro-inflammatory cytokines interleukin-1beta, interleukin-6, and tumor necrosis factor-alpha as well as the chemokine interleukin-8 by macrophage-like cells. In addition, it increased phospholipase C and D activities, which likely contributed to the high levels of prostaglandin E(2) detected in the cell culture supernatant. Lastly, the amount of matrix metalloproteinase-9 produced by macrophage-like cells was significantly increased by the lipopolysaccharide treatment. Interestingly, fusobacterial cells acquired matrix metalloproteinase-9 activity following incubation in the presence of the culture supernatant of lipopolysaccharide-stimulated macrophage-like cells. In summary, the lipopolysaccharide of F. nucleatum ssp. nucleatum has a large array of biological effects on macrophage-like cells. This monocytic responsiveness to lipopolysaccharide may be a key regulator of periodontitis.
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Affiliation(s)
- D Grenier
- Groupe de Recherche en Ecologie Buccale, Faculté de Médecine Dentaire, Université Laval, Quebec City, Quebec, Canada.
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