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Penarete-Acosta D, Stading R, Emerson L, Horn M, Chakraborty S, Han A, Jayaraman A. A microfluidic co-culture model for investigating colonocytes-microbiota interactions in colorectal cancer. LAB ON A CHIP 2024; 24:3690-3703. [PMID: 38973701 DOI: 10.1039/d4lc00013g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Changes in the abundance of certain bacterial species within the colorectal microbiota correlate with colorectal cancer (CRC) development. While carcinogenic mechanisms of single pathogenic bacteria have been characterized in vitro, limited tools are available to investigate interactions between pathogenic bacteria and both commensal microbiota and colonocytes in a physiologically relevant tumor microenvironment. To address this, we developed a microfluidic device that can be used to co-culture colonocyte spheroids and colorectal microbiota. The device was used to explore the effect of Fusobacterium nucleatum, an opportunistic pathogen associated with colorectal cancer development in humans, on colonocyte gene expression and microbiota composition. F. nucleatum altered the transcription of genes involved in cytokine production, epithelial-to-mesenchymal transition, and proliferation in colonocytes in a contact-independent manner; however, most of these effects were significantly diminished by the presence of commensal microbiota. Interestingly, F. nucleatum significantly altered the abundance of multiple bacterial clades associated with mucosal immune responses and cancer development in the colon. Our results highlight the importance of evaluating the potential carcinogenic activity of pathogens in the context of a commensal microbiota, and the potential to discover novel inter-species microbial interactions in the CRC microenvironment.
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Affiliation(s)
| | - Rachel Stading
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, USA
| | - Laura Emerson
- Department of Biomedical Engineering, Texas A&M University, USA.
| | - Mitchell Horn
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, USA
| | - Sanjukta Chakraborty
- Department of Medical Physiology, College of Medicine, Texas A&M University, USA
| | - Arum Han
- Department of Biomedical Engineering, Texas A&M University, USA.
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, USA
- Department of Electrical and Computer Engineering, Texas A&M University, USA
| | - Arul Jayaraman
- Department of Biomedical Engineering, Texas A&M University, USA.
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, USA
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Sayed IM, Vo DT, Alcantara J, Inouye KM, Pranadinata RF, Luo L, Boland CR, Goyal NP, Kuo DJ, Huang SC, Sahoo D, Ghosh P, Das S. Molecular Signatures for Microbe-Associated Colorectal Cancers. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.26.595902. [PMID: 38853996 PMCID: PMC11160670 DOI: 10.1101/2024.05.26.595902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Background Genetic factors and microbial imbalances play crucial roles in colorectal cancers (CRCs), yet the impact of infections on cancer initiation remains poorly understood. While bioinformatic approaches offer valuable insights, the rising incidence of CRCs creates a pressing need to precisely identify early CRC events. We constructed a network model to identify continuum states during CRC initiation spanning normal colonic tissue to pre-cancer lesions (adenomatous polyps) and examined the influence of microbes and host genetics. Methods A Boolean network was built using a publicly available transcriptomic dataset from healthy and adenoma affected patients to identify an invariant Microbe-Associated Colorectal Cancer Signature (MACS). We focused on Fusobacterium nucleatum ( Fn ), a CRC-associated microbe, as a model bacterium. MACS-associated genes and proteins were validated by RT-qPCR, RNA seq, ELISA, IF and IHCs in tissues and colon-derived organoids from genetically predisposed mice ( CPC-APC Min+/- ) and patients (FAP, Lynch Syndrome, PJS, and JPS). Results The MACS that is upregulated in adenomas consists of four core genes/proteins: CLDN2/Claudin-2 (leakiness), LGR5/leucine-rich repeat-containing receptor (stemness), CEMIP/cell migration-inducing and hyaluronan-binding protein (epithelial-mesenchymal transition) and IL8/Interleukin-8 (inflammation). MACS was induced upon Fn infection, but not in response to infection with other enteric bacteria or probiotics. MACS induction upon Fn infection was higher in CPC-APC Min+/- organoids compared to WT controls. The degree of MACS expression in the patient-derived organoids (PDOs) generally corresponded with the known lifetime risk of CRCs. Conclusions Computational prediction followed by validation in the organoid-based disease model identified the early events in CRC initiation. MACS reveals that the CRC-associated microbes induce a greater risk in the genetically predisposed hosts, suggesting its potential use for risk prediction and targeted cancer prevention.
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Pignatelli P, Nuccio F, Piattelli A, Curia MC. The Role of Fusobacterium nucleatum in Oral and Colorectal Carcinogenesis. Microorganisms 2023; 11:2358. [PMID: 37764202 PMCID: PMC10537357 DOI: 10.3390/microorganisms11092358] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/02/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023] Open
Abstract
In recent years, several studies have suggested a strong association of microorganisms with several human cancers. Two periodontopathogenic species in particular have been mentioned frequently: Fusobacterium nucleatum (F. nucleatum) and Porphyromonas gingivalis. Chronic periodontal disease has been reported to be a risk factor for oral squamous cell carcinoma (OSCC), colorectal cancer (CRC) and pancreatic cancer. F. nucleatum is a Gram-negative anaerobic bacterium that lives in the oral cavity, urogenital, intestinal and upper digestive tract. It plays a significant role as a co-aggregation factor, with almost all bacterial species that participate in oral plaque formation acting as a bridge between early and late colonizers. F. nucleatum, gives an important inflammatory contribution to tumorigenesis progression and is associated with epithelial-derived malignancies, such as OSCC and CRC. F. nucleatum produces an adhesion protein, FadA, which binds to VE-cadherin on endothelial cells and to E-cadherins on epithelial cells. The last binding activates oncogenic pathways, such as Wnt/βcatenin, in oral and colorectal carcinogenesis. F. nucleatum also affects immune response because its Fap2 protein interacts with an immune receptor named TIGIT present on some T cells and natural killer cells inhibiting immune cells activities. Morover, F. nucleatum release outer membrane vesicles (OMVs), which induce the production of proinflammatory cytokines and initiating inflammation. F. nucleatum migrates from the oral cavity and reaches the colon hematogenously but it is not known if in the bloodstream it reaches the CRC as free, erythrocyte-bound bacteria or in OMV. F. nucleatum abundance in CRC tissue has been inversely correlated with overall survival (OS). The prevention and treatment of periodontal disease through the improvement of oral hygiene should be included in cancer prevention protocols. FadA virulence factors may also serve as novel targets for therapeutic intervention of oral and colorectal cancer.
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Affiliation(s)
- Pamela Pignatelli
- COMDINAV DUE, Nave Cavour, Italian Navy, Stazione Navale Mar Grande, 74122 Taranto, Italy;
| | - Federica Nuccio
- MARICENSELEZ ANCONA, Centro di Selezione M.M., Italian Navy, 60127 Ancona, Italy;
| | - Adriano Piattelli
- School of Dentistry, Saint Camillus International University for Health Sciences, 00131 Rome, Italy;
- Facultad de Medicina, UCAM Universidad Católica San Antonio de Murcia, 30107 Murcia, Spain
| | - Maria Cristina Curia
- Department of Medical, Oral and Biotechnological Sciences, G. d’Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
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4
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Wilde J, Allen-Vercoe E. Characterizing prophages in the genus Fusobacterium. Anaerobe 2023; 80:102718. [PMID: 36801248 DOI: 10.1016/j.anaerobe.2023.102718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 02/11/2023] [Accepted: 02/13/2023] [Indexed: 02/17/2023]
Abstract
OBJECTIVES We set out to identify and characterize prophages within genomes of published Fusobacterium strains, and to develop qPCR-based methods to characterize intra- and extra-cellular induction of prophage replication in a variety of environmental contexts. METHODS Various in silico tools were used to predict prophage presence across 105 Fusobacterium spp. Genomes. Using the example of the model pathogen, Fusobacterium nucleatum subsp. animalis strain 7-1, qPCR was used with DNase I treatment to determine induction of its 3 predicted prophages ɸFunu1, ɸFunu2, and ɸFunu3, across several conditions. RESULTS 116 predicted prophage sequences were found and analyzed. An emerging association between the phylogenetic history of a Fusobacterium prophage and that of its host was detected, as was the presence of genes encoding putative host fitness factors (e.g. ADP-ribosyltransferases) in distinct subclusters of prophage genomes. For strain 7-1, a pattern of expression for ɸFunu1, ɸFunu2, and ɸFunu3 was established indicating that ɸFunu1 and ɸFunu2 are capable of spontaneous induction. I Salt and mitomycin C exposure were able to promote induction of ɸFunu2. A range of other biologically relevant stressors, including exposure to pH, mucin and human cytokines showed no or minimal induction of these same prophages. ɸFunu3 induction was not detected under tested conditions. CONCLUSION The heterogeneity of Fusobacterium strains is matched by their prophages. While the role of Fusobacterium prophages in host pathogenicity remains unclear, this work provides the first overview of clustered prophage distribution among this enigmatic genus and describes an effective assay for quantifying mixed samples of prophages that cannot be detected by plaque assay.
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Affiliation(s)
- Jacob Wilde
- Department of Molecular and Cellular Biology, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada
| | - Emma Allen-Vercoe
- Department of Molecular and Cellular Biology, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada.
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5
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Gaba FI, González RC, Martïnez RG. The Role of Oral Fusobacterium nucleatum in Female Breast Cancer: A Systematic Review and Meta-Analysis. Int J Dent 2022; 2022:1876275. [PMID: 36466367 PMCID: PMC9711985 DOI: 10.1155/2022/1876275] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 10/17/2022] [Accepted: 11/01/2022] [Indexed: 02/06/2024] Open
Abstract
INTRODUCTION Breast cancer is the world's most prevalent malignancy, with an increasing incidence and a predisposition for postpubertal females from all cultural and ethnic backgrounds. More recently, oral Fusobacterium nucleatum species have been observed in cancerous human breast tissue, drawing attention to the role of microbes in cancer pathogenesis. OBJECTIVES Investigating oral Fusobacterium nucleatum species as potential biomarkers for female-specific breast cancer. METHODS A systematic search in The Central Register of Controlled Trials, EMBASE, EBSCO, NCBI, and MEDLINE databases was undertaken from the 1st January, 1983-31st March, 2022. Articles included were in English and based on women between the ages of 18-96 years with confirmed gingivitis/periodontal disease and breast cancer diagnoses from registered specialists. Authors extracted data independently, and a meta-analysis of risk estimations measuring associations between oral Fusobacterium nucleatum species and female-specific breast cancer was elucidated via calculated relative risks and 95% confidence intervals. RESULTS AXIS tool analysis revealed 78.70% of articles with a positive correlation between oral Fusobacterium nucleatum and female-specific breast cancer. The risk of breast cancer development increased with significant levels of oral Fusobacterium nucleatum due to gingivitis/periodontitis (relative risk = 1.78, 95% confidence interval = 1.63-1.91). Low-moderate statistical heterogeneity was found (I 2 = 41.39%; P = 0.02), and the importance of periodontal status on breast cancer pathogenesis was determined (relative risk = 1.24, 95% confidence interval = 1.01-1.30). CONCLUSIONS Oral Fusobacterium nucleatum species are a risk factor for breast cancer development, thus elevating their biomarker potentiality.
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Affiliation(s)
- Fariah I. Gaba
- Mondzorg Scheveningen, Renbaanstraat 75, 2586 EZ, The Hague, Netherlands
| | - Raquel Carcelén González
- Faculty of Health and Science, CEU Cardenal Herrera University, Carrer Lluís Vives 1, 46115 Alfara del Patriarca, Valencia, Spain
| | - Raquel González Martïnez
- CIMEV Institute in Spain, Periodontics and Oral Surgery at the Faculty of Health and Science, CEU Cardenal Herrera University, Carrer Lluís Vives 1, 46115 Alfara del Patriarca, Valencia, Spain
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6
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Zhao T, Wang X, Fu L, Yang K. Fusobacterium nucleatum: a new player in regulation of cancer development and therapeutic response. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2022; 5:436-450. [PMID: 35800370 PMCID: PMC9255244 DOI: 10.20517/cdr.2021.144] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 03/08/2022] [Accepted: 03/17/2022] [Indexed: 12/15/2022]
Abstract
A dysbiosis in microbial diversity or functionality can promote disease development. Emerging preclinical and clinical evidence emphasizes the interplay between microbiota and both disease evolution and the treatment response of different cancers. One bacterium that has garnered much attention in a few cancer microbiota studies is Fusobacterium nucleaum (Fn). To provide updated knowledge of the functional role of Fn in cancer prevention and management, this review summarizes the relationship among Fn, cancer, and chemoimmunotherapy response, with the potential mechanisms of action also intensively discussed, which will benefit the development of strategies to prevent or treat cancer via Fn-based therapeutic interventions.
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Affiliation(s)
- Tengda Zhao
- Department of Oral and Maxillofacial Surgery, Department of Health Management Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong, China
| | - Xueping Wang
- Sun Yat-sen University Cancer center, State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, Guangdong, China
| | - Liwu Fu
- Sun Yat-sen University Cancer center, State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, Guangdong, China
| | - Ke Yang
- Department of Oral and Maxillofacial Surgery, Department of Health Management Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong, China
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7
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Gut Microbial Profile in Patients with Pancreatic Cancer. Jundishapur J Microbiol 2022. [DOI: 10.5812/jjm-122386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Background: Pancreatic cancer is a lethal tumor with a poor prognosis. The connection between pancreatic cancer and gut microbiota is less reported. Objectives: This study analyzed microbial characteristics in patients with pancreatic cancer from the tropical area of China and explored the potential impact of the characteristic microflora on pancreatic cancer. Methods: Stool samples and blood test indices of participants were collected in Hainan, China. Metagenomic sequencing was used to analyze the gut microbiota characteristics. The R corrplot package was used to analyze the correlation between gut microbiota and blood test indices. Results: The microbial community in pancreatic cancer were clustered together and significantly separated from controls. The Simpson index was increased significantly in pancreatic cancer compared to controls. The abundances of butyrate-producing bacteria (Anaerostipes hadrus, Lachnoclostridium phocaeense, and Romboutsia ilealis), Bifidobacteria, and [Eubacterium] eligens were significantly decreased, while Fusobacterium, Enterobacter, and Enterococcus were significantly increased in pancreatic cancer. Prevotella copri may have a vital role in the bacterial interaction network. Pathways connected to metabolism, environment (bacterial secretion system), genetic information (protein export and ribosome), and human diseases (infectious diseases and drug resistance) were increased in the pancreatic cancer group. Butyrate-producing bacteria (butyrate-producing bacterium SS3/4, A. hadrus, R. intestinalis, and Faecalibacterium prausnitzii) and Bifidobacteria were significantly negatively correlated with the neutrophil-to-lymphocyte ratio. Conclusions: The gut microbiome was distinct in patients with pancreatic cancer from the tropical area of China. Changes in intestinal flora abundance and metabolic pathways may play an essential role in the occurrence and development of pancreatic cancer.
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8
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Tortora SC, Bodiwala VM, Quinn A, Martello LA, Vignesh S. Microbiome and colorectal carcinogenesis: Linked mechanisms and racial differences. World J Gastrointest Oncol 2022; 14:375-395. [PMID: 35317317 PMCID: PMC8918999 DOI: 10.4251/wjgo.v14.i2.375] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/26/2021] [Accepted: 01/14/2022] [Indexed: 02/06/2023] Open
Abstract
Various studies have shown the interplay between the intestinal microbiome, environmental factors, and genetic changes in colorectal cancer (CRC) development. In this review, we highlight the various gut and oral microbiota associated with CRC and colorectal adenomas, and their proposed molecular mechanisms in relation to the processes of “the hallmarks of cancer”, and differences in microbial diversity and abundance between race/ethnicity. Patients with CRC showed increased levels of Bacteroides, Prevotella, Escherichia coli, enterotoxigenic Bacteroides fragilis, Streptococcus gallolyticus, Enterococcus faecalis, Fusobacterium nucleatum (F. nucleatum) and Clostridium difficile. Higher levels of Bacteroides have been found in African American (AA) compared to Caucasian American (CA) patients. Pro-inflammatory bacteria such as F. nucleatum and Enterobacter species were significantly higher in AAs. Also, AA patients have been shown to have decreased microbial diversity compared to CA patients. Some studies have shown that using microbiome profiles in conjunction with certain risk factors such as age, race and body mass index may help predict healthy colon vs one with adenomas or carcinomas. Periodontitis is one of the most common bacterial infections in humans and is more prevalent in Non-Hispanic-Blacks as compared to Non-Hispanic Whites. This condition causes increased systemic inflammation, immune dysregulation, gut microbiota dysbiosis and thereby possibly influencing colorectal carcinogenesis. Periodontal-associated bacteria such as Fusobacterium, Prevotella, Bacteroides and Porphyromonas have been found in CRC tissues and in feces of CRC patients. Therefore, a deeper understanding of the association between oral and gastrointestinal bacterial profile, in addition to identifying prevalent bacteria in patients with CRC and the differences observed in ethnicity/race, may play a pivotal role in predicting incidence, prognosis, and lead to the development of new treatments.
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Affiliation(s)
- Sofia C Tortora
- Department of Medicine and Division of Gastroenterology & Hepatology, SUNY Downstate Health Sciences University, Brooklyn, NY 11203, United States
| | - Vimal M Bodiwala
- Department of Medicine and Division of Gastroenterology & Hepatology, SUNY Downstate Health Sciences University, Brooklyn, NY 11203, United States
| | - Andrew Quinn
- Department of Medicine and Division of Gastroenterology & Hepatology, SUNY Downstate Health Sciences University, Brooklyn, NY 11203, United States
| | - Laura A Martello
- Department of Medicine and Division of Gastroenterology & Hepatology, SUNY Downstate Health Sciences University, Brooklyn, NY 11203, United States
| | - Shivakumar Vignesh
- Department of Medicine and Division of Gastroenterology & Hepatology, SUNY Downstate Health Sciences University, Brooklyn, NY 11203, United States
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9
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Kang X, Zhang R, Kwong TN, Lui RN, Wu WK, Sung JJ, Yu J, Wong SH. Serrated neoplasia in the colorectum: gut microbiota and molecular pathways. Gut Microbes 2022; 13:1-12. [PMID: 33382354 PMCID: PMC7781617 DOI: 10.1080/19490976.2020.1863135] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Colorectal cancer (CRC) is a heterogeneous disease with different gene expression patterns. There are two major colorectal carcinogenesis pathways: conventional adenoma-carcinoma pathway and alternative serrated neoplasia pathway. Apart from the conventional pathway that is typically initiated by characteristic APC mutation and chromosomal instability, the serrated neoplasia pathway is mainly characterized by mutations of BRAF or KRAS, microsatellite instability (MSI), and CpG island methylator phenotype (CIMP). Despite the malignant potential of serrated lesions, they can be easily overlooked during endoscopy screening and even in pathological assessment due to its anatomical location, morphology, and histological features. It has been shown that environmental factors especially the gut microbial composition play a key role in CRC pathogenesis. Thus, the preferential localization of serrated lesions in specific intestine areas suggest that niche-specific microbiota composition might intertwined with host genetic perturbations during the development of serrated lesions. Although serrated lesions and conventional adenomas are biologically different, most studies have focused on conventional adenomas, while the pathophysiology and role of microorganisms in the development of serrated lesions remain elusive. In this review, we discuss on the role of gut microbiota in the serrated neoplasia pathway of colorectal carcinogenesis and its specific clinical and molecular features, and summarize the potential mechanisms involved.
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Affiliation(s)
- Xing Kang
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China,State Key Laboratory of Digestive Disease, Institute of Digestive Disease, Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Ru Zhang
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China,Division of Gastroenterology, Department of Medicine, Shenzhen People’s Hospital, Shenzhen, China
| | - Thomas Ny Kwong
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China,State Key Laboratory of Digestive Disease, Institute of Digestive Disease, Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Rashid Ns Lui
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China,State Key Laboratory of Digestive Disease, Institute of Digestive Disease, Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - William Kk Wu
- State Key Laboratory of Digestive Disease, Institute of Digestive Disease, Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China,Department of Anaesthesia and Intensive Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Joseph Jy Sung
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China,State Key Laboratory of Digestive Disease, Institute of Digestive Disease, Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Jun Yu
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China,State Key Laboratory of Digestive Disease, Institute of Digestive Disease, Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China,Jun Yu Department of Medicine and Therapeutics, 9/F Lui Che Woo Clinical Sciences Building, Prince of Wales Hospital, 30-32 Ngan Shing Street, Shatin, Hong Kong
| | - Sunny H Wong
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China,State Key Laboratory of Digestive Disease, Institute of Digestive Disease, Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China,CONTACT Sunny H Wong
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10
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Tang YL, Sim TS, Tan KS. Oral streptococci subvert the host innate immune response through hydrogen peroxide. Sci Rep 2022; 12:656. [PMID: 35027607 PMCID: PMC8758666 DOI: 10.1038/s41598-021-04562-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 12/22/2021] [Indexed: 12/29/2022] Open
Abstract
In periodontal health, oral streptococci constitute up to 80% of the plaque biofilm. Yet, destructive inflammatory events of the periodontium are rare. This observation suggests that oral streptococci may possess mechanisms to co-exist with the host. However, the mechanisms employed by oral streptococci to modulate the innate immune response have not been well studied. One of the key virulence factors produced by oral streptococci is hydrogen peroxide (H2O2). In mammalian cells, H2O2 triggers the activation of nuclear factor erythroid 2-related factor 2 (Nrf2), a key pathway mediating antioxidant defence. This study aimed to determine (1) if H2O2 producing oral streptococci activated the Nrf2 pathway in macrophages, and (2) if the activation of Nrf2 influenced the innate immune response. We found that oral streptococci downregulated the innate immune response in a H2O2 dependent manner through the activation of the Nrf2. The activation of the Nrf2 signalling pathway led to the inhibition of nuclear factor kappa-light-chain-enhancer of activated B cells (NFĸB), the key transcription factor regulating pro-inflammatory response. This study showed for the first time that oral streptococci are unlikely passive bystanders but could play an active role in the maintenance of periodontal health by preventing overt inflammation.
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Affiliation(s)
- Yi Ling Tang
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | - Tiow Suan Sim
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Kai Soo Tan
- Faculty of Dentistry, National University of Singapore, Singapore, Singapore.
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11
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McIlvanna E, Linden GJ, Craig SG, Lundy FT, James JA. Fusobacterium nucleatum and oral cancer: a critical review. BMC Cancer 2021; 21:1212. [PMID: 34774023 PMCID: PMC8590362 DOI: 10.1186/s12885-021-08903-4] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 10/21/2021] [Indexed: 02/07/2023] Open
Abstract
There is a growing level of interest in the potential role inflammation has on the initiation and progression of malignancy. Notable examples include Helicobacter pylori-mediated inflammation in gastric cancer and more recently Fusobacterium nucleatum-mediated inflammation in colorectal cancer. Fusobacterium nucleatum is a Gram-negative anaerobic bacterium that was first isolated from the oral cavity and identified as a periodontal pathogen. Biofilms on oral squamous cell carcinomas are enriched with anaerobic periodontal pathogens, including F. nucleatum, which has prompted hypotheses that this bacterium could contribute to oral cancer development. Recent studies have demonstrated that F. nucleatum can promote cancer by several mechanisms; activation of cell proliferation, promotion of cellular invasion, induction of chronic inflammation and immune evasion. This review provides an update on the association between F. nucleatum and oral carcinogenesis, and provides insights into the possible mechanisms underlying it.
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Affiliation(s)
- Emily McIlvanna
- Patrick G Johnson Centre for Cancer Research, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Gerard J Linden
- Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Stephanie G Craig
- Patrick G Johnson Centre for Cancer Research, Queen's University Belfast, Belfast, Northern Ireland, UK.,Precision Medicine Centre of Excellence, Health Sciences Building, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Fionnuala T Lundy
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, Northern Ireland, UK.
| | - Jacqueline A James
- Patrick G Johnson Centre for Cancer Research, Queen's University Belfast, Belfast, Northern Ireland, UK. .,Precision Medicine Centre of Excellence, Health Sciences Building, Queen's University Belfast, Belfast, Northern Ireland, UK. .,Northern Ireland Biobank, Health Sciences Building, Queen's University Belfast, Belfast, Northern Ireland, UK.
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12
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Wang Y, Li J, Ma C, Jiang S, Li C, Zhang L, Zhang J. Lactiplantibacillus plantarum HNU082 inhibited the growth of Fusobacterium nucleatum and alleviated the inflammatory response introduced by F. nucleatum invasion. Food Funct 2021; 12:10728-10740. [PMID: 34608480 DOI: 10.1039/d1fo01388b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
As a potential biomarker, there is increasing evidence showing that Fusobacterium nucleatum is positively correlated with the occurrence and development of colorectal cancer. Although antibiotics were expected to eliminate F. nucleatum, the side effects associated with gut microbiotal disorders have to be considered. Here, by performing shotgun metagenomic and transcriptome sequencing, we systematically evaluated the antagonistic effects of probiotic Lactiplantibacillus plantarum HNU082 (Lp082) on F. nucleatum in vivo and in vitro. The results showed that the F. nucleatum invasion significantly altered the host intestinal microbiome including the microbial composition, specific species, metabolic pathways and metabolites, as well as impacted the transcriptome of the intestinal epithelial cells. Moreover, the F. nucleatum invasion triggered inflammatory cytokines and inflammatory responses in the intestine but did not develop into colorectal cancer. Excitingly, the Lp082 intervention inhibited the growth of F. nucleatum both in vivo and in vitro and alleviated the inflammatory response introduced by F. nucleatum invasion. Further network-based mechanism exploration demonstrated that Lp082, which negatively correlated to F. nucleatum, maintained the intestinal microbiome homeostasis and prompted the production of beneficial metabolites in the intestine which decreased the expression of inflammatory cytokines in a mouse model. The present research suggested a feasible probiotic intervention strategy for F. nucleatum antagonism in vivo, which may prevent colorectal cancer at the early stage.
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Affiliation(s)
- Yuanyuan Wang
- College of Food Science and Engineering, Hainan University, Haikou 570228, Hainan, China.
| | - Jiahe Li
- College of Food Science and Engineering, Hainan University, Haikou 570228, Hainan, China.
| | - Chenchen Ma
- College of Food Science and Engineering, Hainan University, Haikou 570228, Hainan, China.
| | - Shuaiming Jiang
- College of Food Science and Engineering, Hainan University, Haikou 570228, Hainan, China.
| | - Congfa Li
- College of Food Science and Engineering, Hainan University, Haikou 570228, Hainan, China.
| | - Lin Zhang
- College of Food Science and Engineering, Hainan University, Haikou 570228, Hainan, China.
| | - Jiachao Zhang
- College of Food Science and Engineering, Hainan University, Haikou 570228, Hainan, China.
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13
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Hanus M, Parada-Venegas D, Landskron G, Wielandt AM, Hurtado C, Alvarez K, Hermoso MA, López-Köstner F, De la Fuente M. Immune System, Microbiota, and Microbial Metabolites: The Unresolved Triad in Colorectal Cancer Microenvironment. Front Immunol 2021; 12:612826. [PMID: 33841394 PMCID: PMC8033001 DOI: 10.3389/fimmu.2021.612826] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 03/02/2021] [Indexed: 12/16/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most common cancers worldwide. As with other cancers, CRC is a multifactorial disease due to the combined effect of genetic and environmental factors. Most cases are sporadic, but a small proportion is hereditary, estimated at around 5-10%. In both, the tumor interacts with heterogeneous cell populations, such as endothelial, stromal, and immune cells, secreting different signals (cytokines, chemokines or growth factors) to generate a favorable tumor microenvironment for cancer cell invasion and metastasis. There is ample evidence that inflammatory processes have a role in carcinogenesis and tumor progression in CCR. Different profiles of cell activation of the tumor microenvironment can promote pro or anti-tumor pathways; hence they are studied as a key target for the control of cancer progression. Additionally, the intestinal mucosa is in close contact with a microorganism community, including bacteria, bacteriophages, viruses, archaea, and fungi composing the gut microbiota. Aberrant composition of this microbiota, together with alteration in the diet-derived microbial metabolites content (such as butyrate and polyamines) and environmental compounds has been related to CRC. Some bacteria, such as pks+ Escherichia coli or Fusobacterium nucleatum, are involved in colorectal carcinogenesis through different pathomechanisms including the induction of genetic mutations in epithelial cells and modulation of tumor microenvironment. Epithelial and immune cells from intestinal mucosa have Pattern-recognition receptors and G-protein coupled receptors (receptor of butyrate), suggesting that their activation can be regulated by intestinal microbiota and metabolites. In this review, we discuss how dynamics in the gut microbiota, their metabolites, and tumor microenvironment interplays in sporadic and hereditary CRC, modulating tumor progression.
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Affiliation(s)
- Michelle Hanus
- Laboratory of Innate Immunity, Program of Immunology, Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile
| | - Daniela Parada-Venegas
- Laboratory of Innate Immunity, Program of Immunology, Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile
| | - Glauben Landskron
- Laboratory of Innate Immunity, Program of Immunology, Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile
| | | | - Claudia Hurtado
- Research Core, Academic Department, Clínica Las Condes, Santiago, Chile
| | - Karin Alvarez
- Cancer Center, Clínica Universidad de los Andes, Santiago, Chile
| | - Marcela A. Hermoso
- Laboratory of Innate Immunity, Program of Immunology, Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile
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14
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Lim YRI, Preshaw PM, Lin H, Tan KS. Resveratrol and Its Analogs as Functional Foods in Periodontal Disease Management. FRONTIERS IN DENTAL MEDICINE 2021. [DOI: 10.3389/fdmed.2021.636423] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Periodontitis is a common chronic inflammatory disease driven by the interaction between a dysbiotic oral microbiome and the dysregulated host immune-inflammatory response. Naturally derived nutraceuticals, such as resveratrol and its analogs, are potential adjunctive therapies in periodontal treatment due to their antimicrobial and anti-inflammatory properties. Furthermore, different analogs of resveratrol and the choice of solvents used may lead to varying effects on therapeutic properties. This review presents the current findings and gaps in our understanding on the potential utility of resveratrol and its analogs in periodontal treatment.
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15
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Lawrence GW, Begley M, Cotter PD, Guinane CM. Potential Use of Biotherapeutic Bacteria to Target Colorectal Cancer-Associated Taxa. Int J Mol Sci 2020; 21:ijms21030924. [PMID: 32019270 PMCID: PMC7037558 DOI: 10.3390/ijms21030924] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/23/2020] [Accepted: 01/29/2020] [Indexed: 12/18/2022] Open
Abstract
The role of the gut microbiome in human health and disease is the focus of much attention. It has been widely agreed upon that our gut bacteria play a role in host immunity, nutrient absorption, digestion, metabolism, and other key drivers of health. Furthermore, certain microbial signatures and specific taxa have also been associated with the development of diseases, such as obesity; inflammatory bowel disease; and, indeed, colorectal cancer (CRC), which is the focus of this review. By extension, such taxa represent potential therapeutic targets. In particular, the emerging human pathogen Fusobacterium nucleatum represents an important agent in CRC development and its control within the gastrointestinal tract is desirable. This paper reviews the principal bacterial pathogens that have been associated with CRC to date and discusses the in vitro and human studies that have shown the potential use of biotherapeutic strains as a means of targeting CRC-associated bacteria.
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Affiliation(s)
- Garreth W. Lawrence
- Department of Biological Sciences, Cork Institute of Technology, Cork T12 P928, Ireland; (G.W.L.); (M.B.)
| | - Máire Begley
- Department of Biological Sciences, Cork Institute of Technology, Cork T12 P928, Ireland; (G.W.L.); (M.B.)
- APC Microbiome Ireland, University College Cork, Cork T12 YN60, Ireland;
| | - Paul D. Cotter
- APC Microbiome Ireland, University College Cork, Cork T12 YN60, Ireland;
- Teagasc Food Research Centre, Moorepark, Fermoy, Cork P61 C996, Ireland
| | - Caitriona M. Guinane
- Department of Biological Sciences, Cork Institute of Technology, Cork T12 P928, Ireland; (G.W.L.); (M.B.)
- Correspondence:
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16
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Lee SA, Liu F, Riordan SM, Lee CS, Zhang L. Global Investigations of Fusobacterium nucleatum in Human Colorectal Cancer. Front Oncol 2019; 9:566. [PMID: 31334107 PMCID: PMC6618585 DOI: 10.3389/fonc.2019.00566] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 06/11/2019] [Indexed: 12/24/2022] Open
Abstract
Colorectal cancer (CRC) is the third most prevalent cancer and second in terms of mortality. Emerging evidence from recent studies suggests a potential role of Fusobacterium nucleatum in the development of CRC. In this article, we review studies from different geographical regions examining the association between F. nucleatum and CRC, the detection methods and the tumorigenic mechanisms. Furthermore, we discuss the potential clinical impact of F. nucleatum in CRC and suggest future study directions.
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Affiliation(s)
- Seul A Lee
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Fang Liu
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Stephen M Riordan
- Gastrointestinal and Liver Unit, Prince of Wales Hospital, University of New South Wales, Sydney, NSW, Australia
| | - Cheok S Lee
- Discipline of Pathology, School of Medicine, Western Sydney University, Sydney, NSW, Australia.,Faculty of Medicine and Health, Central Clinical School, University of Sydney, Sydney, NSW, Australia.,Faculty of Medicine, South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia.,Department of Anatomical Pathology, Liverpool Hospital, Sydney, NSW, Australia
| | - Li Zhang
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia
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17
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Immunological Pathways Triggered by Porphyromonas gingivalis and Fusobacterium nucleatum: Therapeutic Possibilities? Mediators Inflamm 2019; 2019:7241312. [PMID: 31341421 PMCID: PMC6612971 DOI: 10.1155/2019/7241312] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/28/2019] [Accepted: 05/19/2019] [Indexed: 02/06/2023] Open
Abstract
Porphyromonas gingivalis (P. gingivalis) and Fusobacterium nucleatum (F. nucleatum) are Gram-negative anaerobic bacteria possessing several virulence factors that make them potential pathogens associated with periodontal disease. Periodontal diseases are chronic inflammatory diseases of the oral cavity, including gingivitis and periodontitis. Periodontitis can lead to tooth loss and is considered one of the most prevalent diseases worldwide. P. gingivalis and F. nucleatum possess virulence factors that allow them to survive in hostile environments by selectively modulating the host's immune-inflammatory response, thereby creating major challenges to host cell survival. Studies have demonstrated that bacterial infection and the host immune responses are involved in the induction of periodontitis. The NLRP3 inflammasome and its effector molecules (IL-1β and caspase-1) play roles in the development of periodontitis. We and others have reported that the purinergic P2X7 receptor plays a role in the modulation of periodontal disease and intracellular pathogen control. Caspase-4/5 (in humans) and caspase-11 (in mice) are important effectors for combating bacterial pathogens via mediation of cell death and IL-1β release. The exact molecular events of the host's response to these bacteria are not fully understood. Here, we review innate and adaptive immune responses induced by P. gingivalis and F. nucleatum infections and discuss the possibility of manipulations of the immune response as therapeutic strategies. Given the global burden of periodontitis, it is important to develop therapeutic targets for the prophylaxis of periodontopathogen infections.
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18
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Yang Z, Ji G. Fusobacterium nucleatum-positive colorectal cancer. Oncol Lett 2019; 18:975-982. [PMID: 31423156 PMCID: PMC6607099 DOI: 10.3892/ol.2019.10433] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Accepted: 05/17/2019] [Indexed: 02/06/2023] Open
Abstract
Colorectal cancer (CRC) is an important threat to human health and the fourth leading cause of mortality worldwide. Accumulating evidence indicates that the composition of the intestinal flora is associated with the occurrence of CRC. Fusobacterium nucleatum (Fn), one of the highly enriched bacteria in CRC tissues, invades the mucosa with adhesion factors and virulence proteins, interacts with the host immune system and promotes the occurrence and development of CRC and chemoresistance. Fn infection is prevalent in human colorectal carcinoma, although the infection rate varies in different regions. Fn may be used as a prognostic indicator of CRC. It is important to understand the multi-pathway carcinogenic mechanisms associated with CRC in order to develop novel antibacterial drugs against Fn. The current review summarizes the role of Fn and relevant research concerning CRC published in recent years, focusing on Fn infection in CRC, pathogenesis of Fn, Fn-positive CRC treatment, screening and prevention strategies against Fn-positive CRC.
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Affiliation(s)
- Zhenhua Yang
- Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, P.R. China.,Department of Digestive Endoscopy, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, P.R. China
| | - Guang Ji
- Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, P.R. China
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19
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Insights Into the Relationship Between Gut Microbiota and Colorectal Cancer. CURRENT COLORECTAL CANCER REPORTS 2018. [DOI: 10.1007/s11888-018-0419-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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20
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Gutmann JL, Manjarrés V. Historical and Contemporary Perspectives on the Microbiological Aspects of Endodontics. Dent J (Basel) 2018; 6:E49. [PMID: 30249009 PMCID: PMC6313668 DOI: 10.3390/dj6040049] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 09/20/2018] [Accepted: 09/20/2018] [Indexed: 12/27/2022] Open
Abstract
The microbiota of the oral cavity plays a significant role in pulpal and periapical diseases. Historically, 100 years ago little was known on microbiota, but after a century of investigations, only now can many of the intimate secrets of microbial growth, expansion, persistence, communal activities, and virulence be revealed. However, with the capabilities of the microbiota for mutation, quorum sensing, and information transference, researchers are hard-pressed to keep up with both the changes and challenges that an amazingly wide range of bacterial species pose for both the scientist and clinician. Fortunately, the development and expansion of a vast array of molecular biological investigative techniques have enabled dentistry and its associated medical fields to attempt to keep pace with the wide and fascinating world of oral microbiology.
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Affiliation(s)
- James L Gutmann
- Department of Endodontics, Texas A&M University College of Dentistry, Dallas, TX 75246, USA.
| | - Vivian Manjarrés
- Department of Endodontics, Nova Southeastern University, College of Dental Medicine, Davie, FL 33314, USA.
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21
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Johnson L, Almeida-da-Silva CLC, Takiya CM, Figliuolo V, Rocha GM, Weissmüller G, Scharfstein J, Coutinho-Silva R, Ojcius DM. Oral infection of mice with Fusobacterium nucleatum results in macrophage recruitment to the dental pulp and bone resorption. Biomed J 2018; 41:184-193. [PMID: 30080658 PMCID: PMC6138822 DOI: 10.1016/j.bj.2018.05.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Revised: 04/01/2018] [Accepted: 05/08/2018] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Fusobacterium nucleatum is a Gram-negative anaerobic bacterium associated with periodontal disease. Some oral bacteria, like Porphyromonas gingivalis, evade the host immune response by inhibiting inflammation. On the other hand, F. nucleatum triggers inflammasome activation and release of danger-associated molecular patterns (DAMPs) in infected gingival epithelial cells. METHODS In this study, we characterized the pro-inflammatory response to F. nucleatum oral infection in BALB/c mice. Western blots and ELISA were used to measure cytokine and DAMP (HMGB1) levels in the oral cavity after infection. Histology and flow cytometry were used to observe recruitment of immune cells to infected tissue and pathology. RESULTS Our results show increased expression and production of pro-inflammatory cytokines during infection. Furthermore, we observe that F. nucleatum infection leads to recruitment of macrophages in different tissues of the oral cavity. Infection also contributes to osteoclast recruitment, which could be involved in the observed bone resorption. CONCLUSIONS Overall, our findings suggest that F. nucleatum infection rapidly induces inflammation, release of DAMPs, and macrophage infiltration in gingival tissues and suggest that osteoclasts may drive bone resorption at early stages of the inflammatory process.
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Affiliation(s)
- Larry Johnson
- Department of Biomedical Sciences, University of the Pacific, Arthur Dugoni School of Dentistry, San Francisco, CA, USA; Immunobiology Program, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Cássio Luiz Coutinho Almeida-da-Silva
- Department of Biomedical Sciences, University of the Pacific, Arthur Dugoni School of Dentistry, San Francisco, CA, USA; Immunobiology Program, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Christina Maeda Takiya
- Immunobiology Program, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Vanessa Figliuolo
- Immunobiology Program, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gustavo Miranda Rocha
- Molecular and Structural Biology Program, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gilberto Weissmüller
- Molecular and Structural Biology Program, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Julio Scharfstein
- Immunobiology Program, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Robson Coutinho-Silva
- Immunobiology Program, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - David M Ojcius
- Department of Biomedical Sciences, University of the Pacific, Arthur Dugoni School of Dentistry, San Francisco, CA, USA; Immunobiology Program, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
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22
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Chen Y, Peng Y, Yu J, Chen T, Wu Y, Shi L, Li Q, Wu J, Fu X. Invasive Fusobacterium nucleatum activates beta-catenin signaling in colorectal cancer via a TLR4/P-PAK1 cascade. Oncotarget 2018; 8:31802-31814. [PMID: 28423670 PMCID: PMC5458249 DOI: 10.18632/oncotarget.15992] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 02/20/2017] [Indexed: 12/15/2022] Open
Abstract
The underlying mechanism of Fusobacterium nucleatum (Fn) in the carcinogenesis of colorectal cancer (CRC) is poorly understood. Here, we examined Fn abundance in CRC tissues, as well as β-catenin, TLR4 and PAK1 protein abundance in Fn positive and Fn negative CRCs. Furthermore, we isolated a strain of Fn (F01) from a CRC tissue and examined whether Fn (F01) infection of colon cancer cells activated β-catenin signaling via the TLR4/P-PAK1/P-β-catenin S675 cascade. Invasive Fn was abundant in 62.2% of CRC tissues. TLR4, PAK1 and nuclear β-catenin proteins were more abundant within Fn-positive over Fn-negative CRCs (P < 0.05). Fn and its lipopolysaccharide induced a significant increase in TLR4/P-PAK1/P-β-catenin S675/C-myc/CyclinD1 protein abundance, as well as in the nuclear translocation of β-catenin. Furthermore, inhibition of TLR4 or PAK1 prior to challenge with Fn significantly decreased protein abundance of P-β-catenin S675, C-myc and Cyclin D1, as well as nuclear β-catenin accumulation. Inhibition of TLR4 significantly decreased P-PAK1 protein abundance, and for the first time, we observed an interaction between TLR4 and P-PAK1 using immunoprecipitation. Our data suggest that invasive Fn activates β-catenin signaling via a TLR4/P-PAK1/P-β-catenin S675 cascade in CRC. Furthermore, TLR4 and PAK1 could be potential pharmaceutical targets for the treatment of Fn-related CRCs.
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Affiliation(s)
- Yongyu Chen
- Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Sichuan, 646000, China
| | - Yan Peng
- Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Sichuan, 646000, China
| | - Jiahui Yu
- Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Sichuan, 646000, China
| | - Ting Chen
- Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Sichuan, 646000, China
| | - Yaxin Wu
- Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Sichuan, 646000, China
| | - Lei Shi
- Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Sichuan, 646000, China
| | - Qing Li
- Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Sichuan, 646000, China
| | - Jiao Wu
- Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Sichuan, 646000, China
| | - Xiangsheng Fu
- Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Sichuan, 646000, China
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23
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Shang FM, Liu HL. Fusobacterium nucleatum and colorectal cancer: A review. World J Gastrointest Oncol 2018; 10:71-81. [PMID: 29564037 PMCID: PMC5852398 DOI: 10.4251/wjgo.v10.i3.71] [Citation(s) in RCA: 168] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 01/09/2018] [Accepted: 03/06/2018] [Indexed: 02/05/2023] Open
Abstract
Fusobacterium nucleatum (F. nucleatum) is a Gram-negative obligate anaerobe bacterium in the oral cavity and plays a role in several oral diseases, including periodontitis and gingivitis. Recently, several studies have reported that the level of F. nucleatum is significantly elevated in human colorectal adenomas and carcinomas compared to that in adjacent normal tissue. Several researchers have also demonstrated that F. nucleatum is obviously associated with colorectal cancer and promotes the development of colorectal neoplasms. In this review, we have summarized the recent reports on F. nucleatum and its role in colorectal cancer and have highlighted the methods of detecting F. nucleatum in colorectal cancer, the underlying mechanisms of pathogenesis, immunity status, and colorectal cancer prevention strategies that target F. nucleatum.
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Affiliation(s)
- Fu-Mei Shang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, China
| | - Hong-Li Liu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, China
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24
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Ghosh SK, Feng Z, Fujioka H, Lux R, McCormick TS, Weinberg A. Conceptual Perspectives: Bacterial Antimicrobial Peptide Induction as a Novel Strategy for Symbiosis with the Human Host. Front Microbiol 2018. [PMID: 29535688 PMCID: PMC5835341 DOI: 10.3389/fmicb.2018.00302] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Human beta defensins (hBDs) are small cationic peptides, expressed in mucosal epithelia and important agents of innate immunity, act as antimicrobial and chemotactic agents at mucosal barriers. In this perspective, we present evidence supporting a novel strategy by which the oral bacterium Fusobacterium nucleatum induces hBDs and other antimicrobial peptides (AMPs) in normal human oral epithelial cells (HOECs) and thereby protects them from other microbial pathogens. The findings stress (1) the physiological importance of hBDs, (2) that this strategy may be a mechanism that contributes to homeostasis and health in body sites constantly challenged with bacteria and (3) that novel properties identified in commensal bacteria could, one day, be harnessed as new probiotic strategies to combat colonization of opportunistic pathogens. With that in mind, we highlight and review the discovery and characterization of a novel lipo-protein, FAD-I (FusobacteriumAssociated Defensin Inducer) associated with the outer membrane of F. nucleatum that may act as a homeostatic agent by activating endogenous AMPs to re-equilibrate a dysregulated microenvironment. FAD-I has the potential to reduce dysbiosis-driven diseases at a time when resistance to antibiotics is increasing. We therefore postulate that FAD-I may offer a new paradigm in immunoregulatory therapeutics to bolster host innate defense of vulnerable mucosae, while maintaining physiologically responsive states of inflammation.
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Affiliation(s)
- Santosh K Ghosh
- Biological Sciences, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Zhimin Feng
- Biological Sciences, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Hisashi Fujioka
- Electron Microscopy Core, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Renate Lux
- School of Dentistry, University of California, Los Angeles, Los Angeles, CA, United States
| | - Thomas S McCormick
- Biological Sciences, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, United States.,Department of Dermatology, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Aaron Weinberg
- Biological Sciences, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, United States
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25
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NLRX1 modulates differentially NLRP3 inflammasome activation and NF-κB signaling during Fusobacterium nucleatum infection. Microbes Infect 2017; 20:615-625. [PMID: 29024797 DOI: 10.1016/j.micinf.2017.09.014] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 09/28/2017] [Indexed: 01/18/2023]
Abstract
NOD-like receptors (NLRs) play a large role in regulation of host innate immunity, yet their role in periodontitis remains to be defined. NLRX1, a member of the NLR family that localizes to mitochondria, enhances mitochondrial ROS (mROS) generation. mROS can activate the NLRP3 inflammasome, yet the role of NLRX1 in NLRP3 inflammasome activation has not been examined. In this study, we revealed the mechanism by which NLRX1 positively regulates ATP-induced NLRP3 inflammasome activation through mROS in gingival epithelial cells (GECs). We found that depletion of NLRX1 by shRNA attenuated ATP-induced mROS generation and redistribution of the NLRP3 inflammasome adaptor protein, ASC. Furthermore, depletion of NLRX1 inhibited Fusobacterium nucleatum infection-activated caspase-1, suggesting that it also inhibits the NLRP3 inflammasome. Conversely, NLRX1 also acted as a negative regulator of NF-κB signaling and IL-8 expression. Thus, NLRX1 stimulates detection of the pathogen F. nucleatum via the inflammasome, while dampening cytokine production. We expect that commensals should not activate the inflammasome, and NLRX1 should decrease their ability to stimulate expression of pro-inflammatory cytokines such as IL-8. Therefore, NLRX1 may act as a potential switch with regards to anti-microbial responses in healthy or diseased states in the oral cavity.
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26
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Zanzoni A, Spinelli L, Braham S, Brun C. Perturbed human sub-networks by Fusobacterium nucleatum candidate virulence proteins. MICROBIOME 2017; 5:89. [PMID: 28793925 PMCID: PMC5551000 DOI: 10.1186/s40168-017-0307-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 07/13/2017] [Indexed: 05/10/2023]
Abstract
BACKGROUND Fusobacterium nucleatum is a gram-negative anaerobic species residing in the oral cavity and implicated in several inflammatory processes in the human body. Although F. nucleatum abundance is increased in inflammatory bowel disease subjects and is prevalent in colorectal cancer patients, the causal role of the bacterium in gastrointestinal disorders and the mechanistic details of host cell functions subversion are not fully understood. RESULTS We devised a computational strategy to identify putative secreted F. nucleatum proteins (FusoSecretome) and to infer their interactions with human proteins based on the presence of host molecular mimicry elements. FusoSecretome proteins share similar features with known bacterial virulence factors thereby highlighting their pathogenic potential. We show that they interact with human proteins that participate in infection-related cellular processes and localize in established cellular districts of the host-pathogen interface. Our network-based analysis identified 31 functional modules in the human interactome preferentially targeted by 138 FusoSecretome proteins, among which we selected 26 as main candidate virulence proteins, representing both putative and known virulence proteins. Finally, six of the preferentially targeted functional modules are implicated in the onset and progression of inflammatory bowel diseases and colorectal cancer. CONCLUSIONS Overall, our computational analysis identified candidate virulence proteins potentially involved in the F. nucleatum-human cross-talk in the context of gastrointestinal diseases.
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Affiliation(s)
- Andreas Zanzoni
- Aix-Marseille Université, Inserm, TAGC UMR_S1090, Marseille, France.
| | - Lionel Spinelli
- Aix-Marseille Université, Inserm, TAGC UMR_S1090, Marseille, France
| | - Shérazade Braham
- Aix-Marseille Université, Inserm, TAGC UMR_S1090, Marseille, France
| | - Christine Brun
- Aix-Marseille Université, Inserm, TAGC UMR_S1090, Marseille, France
- CNRS, Marseille, France
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Lee SJ, Choi BK. Involvement of NLRP10 in IL-1α induction of oral epithelial cells by periodontal pathogens. Innate Immun 2017; 23:569-577. [PMID: 28766990 DOI: 10.1177/1753425917722610] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
This study investigated the pathogenesis of periodontitis and the role of nucleotide-binding oligomerization domain-like receptor protein 10 (NLRP10). The human oral epithelial cell line HOK-16B was infected with two periodontal pathogens, Tannerella forsythia and Fusobacterium nucleatum, at various MOIs. RT-PCR and immunoblotting demonstrated that infection increased mRNA and protein expression of NLRP10, respectively. The siRNA-mediated NLRP10 knockdown significantly reduced IL-1α expression and secretion. Both bacteria induced phosphorylation of ERK, JNK and p38 MAP kinases in HOK-16B cells. NLRP10 knockdown impaired ERK phosphorylation only. ERK inhibition significantly decreased the expression of T. forsythia- and F. nucleatum-induced IL-1α. Our data suggest that NLRP10 is involved in activating the ERK signalling pathway in HOK-16B cells infected with T. forsythia and F. nucleatum. This pathway likely augments the pro-inflammatory cytokine IL-1α levels, which may play a critical role in periodontitis.
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Affiliation(s)
- Seok-Joo Lee
- 1 Department of Oral Microbiology and Immunology, School of Dentistry, Seoul National University, Seoul, Korea
| | - Bong-Kyu Choi
- 1 Department of Oral Microbiology and Immunology, School of Dentistry, Seoul National University, Seoul, Korea
- 2 Dental Research Institute, Seoul National University, Seoul, Korea
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Holt RA, Cochrane K. Tumor Potentiating Mechanisms of Fusobacterium nucleatum, A Multifaceted Microbe. Gastroenterology 2017; 152:694-696. [PMID: 28143770 DOI: 10.1053/j.gastro.2017.01.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Robert A Holt
- British Columbia Cancer Agency Genome Sciences Centre, University of British Columbia Department of Medical Genetics, Simon Fraser University Department of Biochemistry & Molecular Biology
| | - Kyla Cochrane
- British Columbia Cancer Agency Genome Sciences Centre, University of British Columbia Department of Medical Genetics, Simon Fraser University Department of Biochemistry & Molecular Biology.
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Park JE, Sun Y, Lim SK, Tam JP, Dekker M, Chen H, Sze SK. Dietary phytochemical PEITC restricts tumor development via modulation of epigenetic writers and erasers. Sci Rep 2017; 7:40569. [PMID: 28079155 PMCID: PMC5228035 DOI: 10.1038/srep40569] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 12/01/2016] [Indexed: 12/21/2022] Open
Abstract
Dietary intake of bioactive phytochemicals including the cruciferous vegetable derivative phenethyl isothiocyanate (PEITC) can reduce risk of human cancers, but possible epigenetic mechanisms of these effects are yet unknown. We therefore sought to identify the molecular basis of PEITC-mediated epigenetic tumor restriction. Colon cancer cells treated with low-dose PEITC for >1 month exhibited stable alterations in expression profile of epigenetic writers/erasers and chromatin-binding of histone deacetylases (HDACs) and Polycomb-group (PcG) proteins. Sustained PEITC exposure not only blocked HDAC binding to euchromatin but was also associated with hypomethylation of PcG target genes that are typically hypermethylated in cancer. Furthermore, PEITC treatment induced expression of pro-apoptotic genes in tumor cells, which was partially reversed by overexpression of PcG member BMI-1, suggesting opposing roles for PEITC and PcG proteins in control of tumor progression. These data demonstrate that PEITC regulates chromatin binding of key epigenetic writers/erasers and PcG complexes to restrict tumor development.
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Affiliation(s)
- Jung Eun Park
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, 637551 Singapore
| | - Yang Sun
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, 637551 Singapore
| | - Sai Kiang Lim
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, #05-05 Immunos, 138648 Singapore
| | - James P Tam
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, 637551 Singapore
| | - Matthijs Dekker
- Food Quality and Design Group, Department of Agrotechnology and Food Sciences, Wageningen University, PO Box 8129, 6700 EV Wageningen, Netherlands
| | - Hong Chen
- Department of Food Science and Human Nutrition, University of Illinois, 472 Bevier Hall, 905 S. Goodwin, Urbana IL 61801, USA
| | - Siu Kwan Sze
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, 637551 Singapore
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Ding Q, Tan KS. The Danger Signal Extracellular ATP Is an Inducer of Fusobacterium nucleatum Biofilm Dispersal. Front Cell Infect Microbiol 2016; 6:155. [PMID: 27909688 PMCID: PMC5112537 DOI: 10.3389/fcimb.2016.00155] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 11/02/2016] [Indexed: 01/15/2023] Open
Abstract
Plaque biofilm is the primary etiological agent of periodontal disease. Biofilm formation progresses through multiple developmental stages beginning with bacterial attachment to a surface, followed by development of microcolonies and finally detachment and dispersal from a mature biofilm as free planktonic bacteria. Tissue damage arising from inflammatory response to biofilm is one of the hallmark features of periodontal disease. A consequence of tissue damage is the release of ATP from within the cell into the extracellular space. Extracellular ATP (eATP) is an example of a danger associated molecular pattern (DAMP) employed by mammalian cells to elicit inflammatory and damage healing responses. Although, the roles of eATP as a signaling molecule in multi-cellular organisms have been relatively well studied, exogenous ATP also influences bacteria biofilm formation. Since plaque biofilms are continuously exposed to various stresses including exposure to the host damage factors such as eATP, we hypothesized that eATP, in addition to eliciting inflammation could potentially influence the biofilm lifecycle of periodontal associated bacteria. We found that eATP rather than nutritional factors or oxidative stress induced dispersal of Fusobacterium nucleatum, an organism associated with periodontal disease. eATP induced biofilm dispersal through chelating metal ions present in biofilm. Dispersed F. nucleatum biofilm, regardless of natural or induced dispersal by exogenous ATP, were more adhesive and invasive compared to planktonic or biofilm counterparts, and correspondingly activated significantly more pro-inflammatory cytokine production in infected periodontal fibroblasts. Dispersed F. nucleatum also showed higher expression of fadA, a virulence factor implicated in adhesion and invasion, compared to planktonic or biofilm bacteria. This study revealed for the first time that periodontal bacterium is capable of co-opting eATP, a host danger signaling molecule to detach from biofilms. Our results further showed that dispersed F. nucleatum possessed distinct virulence characteristics compared to their biofilm and planktonic counterparts.
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Affiliation(s)
- Qinfeng Ding
- Faculty of Dentistry, National University of Singapore Singapore, Singapore
| | - Kai Soo Tan
- Faculty of Dentistry, National University of Singapore Singapore, Singapore
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O’Halloran S, O’Leary A, Kuijper T, Downer EJ. MyD88 acts as an adaptor protein for inflammatory signalling induced by amyloid-β in macrophages. Immunol Lett 2014; 162:109-18. [DOI: 10.1016/j.imlet.2014.08.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 07/18/2014] [Accepted: 08/03/2014] [Indexed: 10/24/2022]
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Fusobacterium and Enterobacteriaceae: important players for CRC? Immunol Lett 2014; 162:54-61. [PMID: 24972311 DOI: 10.1016/j.imlet.2014.05.014] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 05/16/2014] [Accepted: 05/19/2014] [Indexed: 12/13/2022]
Abstract
The gut microbiota plays an essential role in regulating intestinal homeostasis through its capacity to modulate various biological activities ranging from barrier, immunity and metabolic function. Not surprisingly, microbial dysbiosis is associated with numerous intestinal disorders including inflammatory bowel diseases (IBD) and colorectal cancer (CRC). In this piece, we will review recent evidence that gut microbial dysbiosis can influence intestinal disease, including colitis and CRC. We will discuss the biological events implicated in the development of microbial dysbiosis and the emergence of CRC-associated microorganisms, focusing on Escherichia coli and Fusobacterium nucleatum. Finally, the mechanisms by which E. coli and F. nucleatum exert potentially carcinogenic effects on the host will be reviewed.
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