1501
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Gagnaire A, Nadel B, Raoult D, Neefjes J, Gorvel JP. Collateral damage: insights into bacterial mechanisms that predispose host cells to cancer. Nat Rev Microbiol 2017; 15:109-128. [DOI: 10.1038/nrmicro.2016.171] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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1502
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Elliott DRF, Walker AW, O'Donovan M, Parkhill J, Fitzgerald RC. A non-endoscopic device to sample the oesophageal microbiota: a case-control study. Lancet Gastroenterol Hepatol 2017; 2:32-42. [PMID: 28404012 PMCID: PMC5656094 DOI: 10.1016/s2468-1253(16)30086-3] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 08/09/2016] [Accepted: 08/17/2016] [Indexed: 12/17/2022]
Abstract
BACKGROUND The strongest risk factor for oesophageal adenocarcinoma is reflux disease, and the rising incidence of this coincides with the eradication of Helicobacter pylori, both of which might alter the oesophageal microbiota. We aimed to profile the microbiota at different stages of Barrett's carcinogenesis and investigate the Cytosponge as a minimally invasive tool for sampling the oesophageal microbiota. METHODS In this case-control study, 16S rRNA gene amplicon sequencing was done on 210 oesophageal samples from 86 patients representing the Barrett's oesophagus progression sequence (normal squamous controls [n=20], non-dysplastic [n=24] and dysplastic Barrett's oesophagus [n=23], and oesophageal adenocarcinoma [n=19]), relevant negative controls, and replicates on the Illumina MiSeq platform. Samples were taken from patients enrolled in the BEST2 study at five UK hospitals and the OCCAMS study at six UK hospitals. We compared fresh frozen tissue, fresh frozen endoscopic brushings, and the Cytosponge device for microbial DNA yield (qPCR), diversity, and community composition. FINDINGS There was decreased microbial diversity in oesophageal adenocarcinoma tissue compared with tissue from healthy control patients as measured by the observed operational taxonomic unit (OTU) richness (p=0·0012), Chao estimated total richness (p=0·0004), and Shannon diversity index (p=0·0075). Lactobacillus fermentum was enriched in oesophageal adenocarcinoma (p=0·028), and lactic acid bacteria dominated the microenvironment in seven (47%) of 15 cases of oesophageal adenocarcinoma. Comparison of oesophageal sampling methods showed that the Cytosponge yielded more than ten-times higher quantities of microbial DNA than did endoscopic brushes or biopsies using quantitative PCR (p<0·0001). The Cytosponge samples contained the majority of taxa detected in biopsy and brush samples, but were enriched for genera from the oral cavity and stomach, including Fusobacterium, Megasphaera, Campylobacter, Capnocytophaga, and Dialister. The Cytosponge detected decreased microbial diversity in patients with high-grade dysplasia in comparison to control patients, as measured by the observed OTU richness (p=0·0147), Chao estimated total richness (p=0·023), and Shannon diversity index (p=0·0085). INTERPRETATION Alterations in microbial communities occur in the lower oesophagus in Barrett's carcinogenesis, which can be detected at the pre-invasive stage of high-grade dysplasia with the novel Cytosponge device. Our findings are potentially applicable to early disease detection, and future test development should focus on longitudinal sampling of the microbiota to monitor for changes in microbial diversity in a larger cohort of patients. FUNDING Cancer Research UK, National Institute for Health Research, Medical Research Council, Wellcome Trust, The Scottish Government (RESAS).
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Affiliation(s)
- Daffolyn R Fels Elliott
- Medical Research Centre Cancer Unit, Hutchison/MRC Research Centre, University of Cambridge, Cambridge, UK
| | - Alan W Walker
- Pathogen Genomics Group, Wellcome Trust Sanger Institute, Hinxton, UK; Rowett Institute of Nutrition and Health, University of Aberdeen, Aberdeen, UK
| | - Maria O'Donovan
- Department of Histopathology, Cambridge University Hospital NHS Trust, Cambridge, UK
| | - Julian Parkhill
- Pathogen Genomics Group, Wellcome Trust Sanger Institute, Hinxton, UK
| | - Rebecca C Fitzgerald
- Medical Research Centre Cancer Unit, Hutchison/MRC Research Centre, University of Cambridge, Cambridge, UK.
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1503
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Pope JL, Tomkovich S, Yang Y, Jobin C. Microbiota as a mediator of cancer progression and therapy. Transl Res 2017; 179:139-154. [PMID: 27554797 PMCID: PMC5674984 DOI: 10.1016/j.trsl.2016.07.021] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 07/18/2016] [Accepted: 07/20/2016] [Indexed: 12/19/2022]
Abstract
Complex and intricate circuitries regulate cellular proliferation, survival, and growth, and alterations of this network through genetic and epigenetic events result in aberrant cellular behaviors, often leading to carcinogenesis. Although specific germline mutations have been recognized as cancer inducers, the vast majority of neoplastic changes in humans occur through environmental exposure, lifestyle, and diet. An emerging concept in cancer biology implicates the microbiota as a powerful environmental factor modulating the carcinogenic process. For example, the intestinal microbiota influences cancer development or therapeutic responses through specific activities (immune responses, metabolites, microbial structures, and toxins). The numerous effects of microbiota on carcinogenesis, ranging from promoting, preventing, or even influencing therapeutic outcomes, highlight the complex relationship between the biota and the host. In this review, we discuss the latest findings on this complex microbial interaction with the host and highlight potential mechanisms by which the microbiota mediates such a wide impact on carcinogenesis.
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Affiliation(s)
- Jillian L Pope
- Department of Medicine, University of Florida, Gainesville, Fla
| | - Sarah Tomkovich
- Department of Medicine, University of Florida, Gainesville, Fla; Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Ye Yang
- Department of Medicine, University of Florida, Gainesville, Fla
| | - Christian Jobin
- Department of Medicine, University of Florida, Gainesville, Fla; Department of Infectious Diseases and Pathology, University of Florida, Gainesville, Fla.
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1504
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Yu J, Feng Q, Wong SH, Zhang D, Liang QY, Qin Y, Tang L, Zhao H, Stenvang J, Li Y, Wang X, Xu X, Chen N, Wu WKK, Al-Aama J, Nielsen HJ, Kiilerich P, Jensen BAH, Yau TO, Lan Z, Jia H, Li J, Xiao L, Lam TYT, Ng SC, Cheng ASL, Wong VWS, Chan FKL, Xu X, Yang H, Madsen L, Datz C, Tilg H, Wang J, Brünner N, Kristiansen K, Arumugam M, Sung JJY, Wang J. Metagenomic analysis of faecal microbiome as a tool towards targeted non-invasive biomarkers for colorectal cancer. Gut 2017; 66:70-78. [PMID: 26408641 DOI: 10.1136/gutjnl-2015-309800] [Citation(s) in RCA: 690] [Impact Index Per Article: 98.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 08/26/2015] [Accepted: 09/01/2015] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To evaluate the potential for diagnosing colorectal cancer (CRC) from faecal metagenomes. DESIGN We performed metagenome-wide association studies on faecal samples from 74 patients with CRC and 54 controls from China, and validated the results in 16 patients and 24 controls from Denmark. We further validated the biomarkers in two published cohorts from France and Austria. Finally, we employed targeted quantitative PCR (qPCR) assays to evaluate diagnostic potential of selected biomarkers in an independent Chinese cohort of 47 patients and 109 controls. RESULTS Besides confirming known associations of Fusobacterium nucleatum and Peptostreptococcus stomatis with CRC, we found significant associations with several species, including Parvimonas micra and Solobacterium moorei. We identified 20 microbial gene markers that differentiated CRC and control microbiomes, and validated 4 markers in the Danish cohort. In the French and Austrian cohorts, these four genes distinguished CRC metagenomes from controls with areas under the receiver-operating curve (AUC) of 0.72 and 0.77, respectively. qPCR measurements of two of these genes accurately classified patients with CRC in the independent Chinese cohort with AUC=0.84 and OR of 23. These genes were enriched in early-stage (I-II) patient microbiomes, highlighting the potential for using faecal metagenomic biomarkers for early diagnosis of CRC. CONCLUSIONS We present the first metagenomic profiling study of CRC faecal microbiomes to discover and validate microbial biomarkers in ethnically different cohorts, and to independently validate selected biomarkers using an affordable clinically relevant technology. Our study thus takes a step further towards affordable non-invasive early diagnostic biomarkers for CRC from faecal samples.
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Affiliation(s)
- Jun Yu
- Department of Medicine & Therapeutics, State Key Laboratory of Digestive Disease, Institute of Digestive Disease, LKS Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong
| | - Qiang Feng
- BGI-Shenzhen, Shenzhen, China.,Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Sunny Hei Wong
- Department of Medicine & Therapeutics, State Key Laboratory of Digestive Disease, Institute of Digestive Disease, LKS Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong
| | | | - Qiao Yi Liang
- Department of Medicine & Therapeutics, State Key Laboratory of Digestive Disease, Institute of Digestive Disease, LKS Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong
| | | | | | | | - Jan Stenvang
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | | | | | | | - William Ka Kei Wu
- Department of Medicine & Therapeutics, State Key Laboratory of Digestive Disease, Institute of Digestive Disease, LKS Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong
| | - Jumana Al-Aama
- BGI-Shenzhen, Shenzhen, China.,Princess Al Jawhara Center of Excellence in the Research of Hereditary Disorders, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hans Jørgen Nielsen
- Department of Surgical Gastroenterology, Hvidovre Hospital, Hvidovre, Denmark
| | - Pia Kiilerich
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | | | - Tung On Yau
- Department of Medicine & Therapeutics, State Key Laboratory of Digestive Disease, Institute of Digestive Disease, LKS Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong
| | | | | | | | | | - Thomas Yuen Tung Lam
- Department of Medicine & Therapeutics, State Key Laboratory of Digestive Disease, Institute of Digestive Disease, LKS Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong
| | - Siew Chien Ng
- Department of Medicine & Therapeutics, State Key Laboratory of Digestive Disease, Institute of Digestive Disease, LKS Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong
| | - Alfred Sze-Lok Cheng
- Department of Medicine & Therapeutics, State Key Laboratory of Digestive Disease, Institute of Digestive Disease, LKS Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong
| | - Vincent Wai-Sun Wong
- Department of Medicine & Therapeutics, State Key Laboratory of Digestive Disease, Institute of Digestive Disease, LKS Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong
| | - Francis Ka Leung Chan
- Department of Medicine & Therapeutics, State Key Laboratory of Digestive Disease, Institute of Digestive Disease, LKS Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong
| | - Xun Xu
- BGI-Shenzhen, Shenzhen, China
| | | | - Lise Madsen
- BGI-Shenzhen, Shenzhen, China.,Department of Biology, University of Copenhagen, Copenhagen, Denmark.,National Institute of Nutrition and Seafood Research, Bergen, Norway
| | - Christian Datz
- Department of Internal Medicine, Hospital Oberndorf, Q3 Teaching Hospital of the Paracelsus Private University of Salzburg, Oberndorf, Austria
| | - Herbert Tilg
- First Department of Internal Medicine, Medical University Innsbruck, Innsbruck, Austria
| | | | - Nils Brünner
- BGI-Shenzhen, Shenzhen, China.,Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Karsten Kristiansen
- BGI-Shenzhen, Shenzhen, China.,Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Manimozhiyan Arumugam
- BGI-Shenzhen, Shenzhen, China.,The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Joseph Jao-Yiu Sung
- Department of Medicine & Therapeutics, State Key Laboratory of Digestive Disease, Institute of Digestive Disease, LKS Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong
| | - Jun Wang
- BGI-Shenzhen, Shenzhen, China.,Department of Biology, University of Copenhagen, Copenhagen, Denmark.,Princess Al Jawhara Center of Excellence in the Research of Hereditary Disorders, King Abdulaziz University, Jeddah, Saudi Arabia.,Macau University of Science and Technology, Macau, China
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1505
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Habib AM, Islam MS, Sohel M, Mazumder MHH, Sikder MOF, Shahik SM. Mining the Proteome of Fusobacterium nucleatum subsp. nucleatum ATCC 25586 for Potential Therapeutics Discovery: An In Silico Approach. Genomics Inform 2016; 14:255-264. [PMID: 28154519 PMCID: PMC5287132 DOI: 10.5808/gi.2016.14.4.255] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 07/26/2016] [Accepted: 10/26/2016] [Indexed: 12/16/2022] Open
Abstract
The plethora of genome sequence information of bacteria in recent times has ushered in many novel strategies for antibacterial drug discovery and facilitated medical science to take up the challenge of the increasing resistance of pathogenic bacteria to current antibiotics. In this study, we adopted subtractive genomics approach to analyze the whole genome sequence of the Fusobacterium nucleatum, a human oral pathogen having association with colorectal cancer. Our study divulged 1,499 proteins of F. nucleatum, which have no homolog's in human genome. These proteins were subjected to screening further by using the Database of Essential Genes (DEG) that resulted in the identification of 32 vitally important proteins for the bacterium. Subsequent analysis of the identified pivotal proteins, using the Kyoto Encyclopedia of Genes and Genomes (KEGG) Automated Annotation Server (KAAS) resulted in sorting 3 key enzymes of F. nucleatum that may be good candidates as potential drug targets, since they are unique for the bacterium and absent in humans. In addition, we have demonstrated the three dimensional structure of these three proteins. Finally, determination of ligand binding sites of the 2 key proteins as well as screening for functional inhibitors that best fitted with the ligands sites were conducted to discover effective novel therapeutic compounds against F. nucleatum.
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Affiliation(s)
- Abdul Musaweer Habib
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chittagong 4331, Bangladesh
| | - Md Saiful Islam
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chittagong 4331, Bangladesh
| | - Md Sohel
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chittagong 4331, Bangladesh
| | - Md Habibul Hasan Mazumder
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chittagong 4331, Bangladesh
| | - Mohd Omar Faruk Sikder
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chittagong 4331, Bangladesh
| | - Shah Md Shahik
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chittagong 4331, Bangladesh
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1506
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Chhibber-Goel J, Singhal V, Bhowmik D, Vivek R, Parakh N, Bhargava B, Sharma A. Linkages between oral commensal bacteria and atherosclerotic plaques in coronary artery disease patients. NPJ Biofilms Microbiomes 2016. [PMID: 28649401 PMCID: PMC5460270 DOI: 10.1038/s41522-016-0009-7] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Coronary artery disease is an inflammatory disorder characterized by narrowing of coronary arteries due to atherosclerotic plaque formation. To date, the accumulated epidemiological evidence supports an association between oral bacterial diseases and coronary artery disease, but has failed to prove a causal link between the two. Due to the recent surge in microbial identification and analyses techniques, a number of bacteria have been independently found in atherosclerotic plaque samples from coronary artery disease patients. In this study, we present meta-analysis from published studies that have independently investigated the presence of bacteria within atherosclerotic plaque samples in coronary artery disease patients. Data were collated from 63 studies covering 1791 patients spread over a decade. Our analysis confirms the presence of 23 oral commensal bacteria, either individually or in co-existence, within atherosclerotic plaques in patients undergoing carotid endarterectomy, catheter-based atherectomy, or similar procedures. Of these 23 bacteria, 5 (Campylobacter rectus, Porphyromonas gingivalis, Porphyromonas endodontalis, Prevotella intermedia, Prevotella nigrescens) are unique to coronary plaques, while the other 18 are additionally present in non-cardiac organs, and associate with over 30 non-cardiac disorders. We have cataloged the wide spectrum of proteins secreted by above atherosclerotic plaque-associated bacteria, and discuss their possible roles during microbial migration via the bloodstream. We also highlight the prevalence of specific poly-microbial communities within atherosclerotic plaques. This work provides a resource whose immediate implication is the necessity to systematically catalog landscapes of atherosclerotic plaque-associated oral commensal bacteria in human patient populations. A review of bacterial populations in the mouth and in diseased arteries will help research into the role of bacteria in heart disease. Amit Sharma and colleagues at the International Centre for Genetic Engineering and Biotechnology, with co-workers at the All India Institute of Medical Sciences, both in New Delhi, India, analyzed 63 studies covering 1791 patients spread over a decade. They summarize evidence of 23 types of oral bacteria that are also found in atherosclerotic plaques in artery walls. The review also cataloged the proteins secreted by the bacteria and discussed possible involvement of these proteins in the migration of bacteria through the bloodstream. Full genetic details are available for 19 of the 23 bacterial species, which should greatly assist further investigations into the significance of bacteria in the onset of heart disease.
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Affiliation(s)
- Jyoti Chhibber-Goel
- Molecular Medicine Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Varsha Singhal
- Molecular Medicine Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Debaleena Bhowmik
- Molecular Medicine Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Rahul Vivek
- Molecular Medicine Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Neeraj Parakh
- Cardiothoracic Sciences Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Balram Bhargava
- Cardiothoracic Sciences Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Amit Sharma
- Molecular Medicine Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
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1507
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Bacterial Biofilms in Colorectal Cancer Initiation and Progression. Trends Mol Med 2016; 23:18-30. [PMID: 27986421 DOI: 10.1016/j.molmed.2016.11.004] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 11/15/2016] [Accepted: 11/16/2016] [Indexed: 02/06/2023]
Abstract
Intestinal microbiota have emerged as an important factor in colorectal cancer (CRC) initiation and progression. The currently prominent view on bacterial tumorigenesis is that CRC initiation is triggered by local mucosal colonization with specific pathogens (drivers), and that subsequent changes in the peritumoral environment allow colonization by opportunistic (passenger) microbes, further facilitating disease progression. Screening for CRC 'driver-passenger' microorganisms might thus allow early CRC diagnosis or preventive intervention. Such efforts are now being revolutionized by the notion that CRC initiation and progression require organization of bacterial communities into higher-order structures termed biofilms. We explore here the concept that a polymicrobial biofilm promotes pro-carcinogenic activities that may partially underlie progression along the adenoma-CRC axis.
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1508
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Contreras AV, Cocom-Chan B, Hernandez-Montes G, Portillo-Bobadilla T, Resendis-Antonio O. Host-Microbiome Interaction and Cancer: Potential Application in Precision Medicine. Front Physiol 2016; 7:606. [PMID: 28018236 PMCID: PMC5145879 DOI: 10.3389/fphys.2016.00606] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 11/21/2016] [Indexed: 12/19/2022] Open
Abstract
It has been experimentally shown that host-microbial interaction plays a major role in shaping the wellness or disease of the human body. Microorganisms coexisting in human tissues provide a variety of benefits that contribute to proper functional activity in the host through the modulation of fundamental processes such as signal transduction, immunity and metabolism. The unbalance of this microbial profile, or dysbiosis, has been correlated with the genesis and evolution of complex diseases such as cancer. Although this latter disease has been thoroughly studied using different high-throughput (HT) technologies, its heterogeneous nature makes its understanding and proper treatment in patients a remaining challenge in clinical settings. Notably, given the outstanding role of host-microbiome interactions, the ecological interactions with microorganisms have become a new significant aspect in the systems that can contribute to the diagnosis and potential treatment of solid cancers. As a part of expanding precision medicine in the area of cancer research, efforts aimed at effective treatments for various kinds of cancer based on the knowledge of genetics, biology of the disease and host-microbiome interactions might improve the prediction of disease risk and implement potential microbiota-directed therapeutics. In this review, we present the state of the art of sequencing and metabolome technologies, computational methods and schemes in systems biology that have addressed recent breakthroughs of uncovering relationships or associations between microorganisms and cancer. Together, microbiome studies extend the horizon of new personalized treatments against cancer from the perspective of precision medicine through a synergistic strategy integrating clinical knowledge, HT data, bioinformatics, and systems biology.
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Affiliation(s)
| | - Benjamin Cocom-Chan
- Instituto Nacional de Medicina GenómicaMexico City, Mexico; Human Systems Biology Laboratory, Instituto Nacional de Medicina GenómicaMexico City, Mexico
| | - Georgina Hernandez-Montes
- Coordinación de la Investigación Científica, Red de Apoyo a la Investigación-National Autonomous University of Mexico (UNAM) Mexico City, Mexico
| | - Tobias Portillo-Bobadilla
- Coordinación de la Investigación Científica, Red de Apoyo a la Investigación-National Autonomous University of Mexico (UNAM) Mexico City, Mexico
| | - Osbaldo Resendis-Antonio
- Instituto Nacional de Medicina GenómicaMexico City, Mexico; Human Systems Biology Laboratory, Instituto Nacional de Medicina GenómicaMexico City, Mexico; Coordinación de la Investigación Científica, Red de Apoyo a la Investigación-National Autonomous University of Mexico (UNAM)Mexico City, Mexico
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1509
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Thomas AM, Jesus EC, Lopes A, Aguiar S, Begnami MD, Rocha RM, Carpinetti PA, Camargo AA, Hoffmann C, Freitas HC, Silva IT, Nunes DN, Setubal JC, Dias-Neto E. Tissue-Associated Bacterial Alterations in Rectal Carcinoma Patients Revealed by 16S rRNA Community Profiling. Front Cell Infect Microbiol 2016; 6:179. [PMID: 28018861 PMCID: PMC5145865 DOI: 10.3389/fcimb.2016.00179] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 11/24/2016] [Indexed: 12/12/2022] Open
Abstract
Sporadic and inflammatory forms of colorectal cancer (CRC) account for more than 80% of cases. Recent publications have shown mechanistic evidence for the involvement of gut bacteria in the development of both CRC-forms. Whereas, colon and rectal cancer have been routinely studied together as CRC, increasing evidence show these to be distinct diseases. Also, the common use of fecal samples to study microbial communities may reflect disease state but possibly not the tumor microenvironment. We performed this study to evaluate differences in bacterial communities found in tissue samples of 18 rectal-cancer subjects when compared to 18 non-cancer controls. Samples were collected during exploratory colonoscopy (non-cancer group) or during surgery for tumor excision (rectal-cancer group). High throughput 16S rRNA amplicon sequencing of the V4-V5 region was conducted on the Ion PGM platform, reads were filtered using Qiime and clustered using UPARSE. We observed significant increases in species richness and diversity in rectal cancer samples, evidenced by the total number of OTUs and the Shannon and Simpson indexes. Enterotyping analysis divided our cohort into two groups, with the majority of rectal cancer samples clustering into one enterotype, characterized by a greater abundance of Bacteroides and Dorea. At the phylum level, rectal-cancer samples had increased abundance of candidate phylum OD1 (also known as Parcubacteria) whilst non-cancer samples had increased abundance of Planctomycetes. At the genera level, rectal-cancer samples had higher abundances of Bacteroides, Phascolarctobacterium, Parabacteroides, Desulfovibrio, and Odoribacter whereas non-cancer samples had higher abundances of Pseudomonas, Escherichia, Acinetobacter, Lactobacillus, and Bacillus. Two Bacteroides fragilis OTUs were more abundant among rectal-cancer patients seen through 16S rRNA amplicon sequencing, whose presence was confirmed by immunohistochemistry and enrichment verified by digital droplet PCR. Our findings point to increased bacterial richness and diversity in rectal cancer, along with several differences in microbial community composition. Our work is the first to present evidence for a possible role of bacteria such as B. fragilis and the phylum Parcubacteria in rectal cancer, emphasizing the need to study tissue-associated bacteria and specific regions of the gastrointestinal tract in order to better understand the possible links between the microbiota and rectal cancer.
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Affiliation(s)
- Andrew M Thomas
- Medical Genomics Laboratory, CIPE/A.C. Camargo Cancer CenterSão Paulo, Brazil; Departamento de Bioquímica, Instituto de Química, Universidade de São PauloSão Paulo, Brazil; Curso de Pós-Graduação em Bioinformática, Universidade de São PauloSão Paulo, Brazil
| | - Eliane C Jesus
- Medical Genomics Laboratory, CIPE/A.C. Camargo Cancer CenterSão Paulo, Brazil; Department of Pelvic Surgery, A.C. Camargo Cancer CenterSão Paulo, Brazil
| | - Ademar Lopes
- Department of Pelvic Surgery, A.C. Camargo Cancer Center São Paulo, Brazil
| | - Samuel Aguiar
- Department of Pelvic Surgery, A.C. Camargo Cancer Center São Paulo, Brazil
| | - Maria D Begnami
- Department of Pathology, A.C. Camargo Cancer Center São Paulo, Brazil
| | - Rafael M Rocha
- Laboratory of Molecular Gynecology, Department of Gynecology, Medicine College, Federal University of São Paulo São Paulo, Brazil
| | | | | | - Christian Hoffmann
- Departamento de Alimentos e Nutrição Experimental, Faculdade de Ciências Farmacêuticas, Food Research Center (FoRC), Universidade de São Paulo São Paulo, Brazil
| | - Helano C Freitas
- Medical Genomics Laboratory, CIPE/A.C. Camargo Cancer CenterSão Paulo, Brazil; Department of Clinical Oncology, A.C. Camargo Cancer CenterSão Paulo, Brazil
| | - Israel T Silva
- Laboratory of Computational Biology and Bioinformatics, A.C. Camargo Cancer Center São Paulo, Brazil
| | - Diana N Nunes
- Medical Genomics Laboratory, CIPE/A.C. Camargo Cancer Center São Paulo, Brazil
| | - João C Setubal
- Departamento de Bioquímica, Instituto de Química, Universidade de São PauloSão Paulo, Brazil; Biocomplexity Institute, Virginia TechBlacksburg, VA, USA
| | - Emmanuel Dias-Neto
- Medical Genomics Laboratory, CIPE/A.C. Camargo Cancer CenterSão Paulo, Brazil; Laboratory of Neurosciences (LIM-27) Alzira Denise Hertzog Silva, Institute of Psychiatry, Faculdade de Medicina, Universidade de São PauloSão Paulo, Brazil
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1510
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Sutton AO, Strickland D, Norris DR. Food storage in a changing world: implications of climate change for food-caching species. ACTA ACUST UNITED AC 2016. [DOI: 10.1186/s40665-016-0025-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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1511
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Bullman S, Meyerson M, Kostic AD. Emerging Concepts and Technologies for the Discovery of Microorganisms Involved in Human Disease. ANNUAL REVIEW OF PATHOLOGY-MECHANISMS OF DISEASE 2016; 12:217-244. [PMID: 27959634 DOI: 10.1146/annurev-pathol-012615-044305] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Established infectious agents continue to be a major cause of human morbidity and mortality worldwide. However, the causative agent remains unknown for a wide range of diseases; many of these are suspected to be attributable to yet undiscovered microorganisms. The advent of unbiased high-throughput sequencing and bioinformatics has enabled rapid identification and molecular characterization of known and novel infectious agents in human disease. An exciting era of microbe discovery, now under way, holds great promise for the improvement of global health via the development of antimicrobial therapies, vaccination strategies, targeted public health measures, and probiotic-based preventions and therapies. Here, we review the history of pathogen discovery, discuss improvements and clinical applications for the detection of microbially associated diseases, and explore the challenges and strategies for establishing causation in human disease.
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Affiliation(s)
- Susan Bullman
- Dana-Farber Cancer Institute, Boston, Massachusetts 02215; , .,Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142
| | - Matthew Meyerson
- Dana-Farber Cancer Institute, Boston, Massachusetts 02215; , .,Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142.,Harvard Medical School, Boston, Massachusetts 02115
| | - Aleksandar D Kostic
- Research Division, Joslin Diabetes Center, Boston, Massachusetts 02215; .,Department of Microbiology and Immunobiology, Harvard Medical School, Boston, Massachusetts 02115
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1512
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Sharma M, Shukla G. Metabiotics: One Step ahead of Probiotics; an Insight into Mechanisms Involved in Anticancerous Effect in Colorectal Cancer. Front Microbiol 2016; 7:1940. [PMID: 27994577 PMCID: PMC5133260 DOI: 10.3389/fmicb.2016.01940] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Accepted: 11/18/2016] [Indexed: 12/12/2022] Open
Abstract
Colorectal cancer is closely associated with environment, diet and lifestyle. Normally it is treated with surgery, radiotherapy or chemotherapy but increasing systemic toxicity, resistance and recurrence is prompting scientists to devise new potent and safer alternate prophylactic or therapeutic strategies. Among these, probiotics, prebiotics, synbiotics, and metabiotics are being considered as the promising candidates. Metabiotics or probiotic derived factors can optimize various physiological functions of the host and offer an additional advantage to be utilized even in immunosuppressed individuals. Interestingly, anti colon cancer potential of probiotic strains has been attributable to metabiotics that have epigenetic, antimutagenic, immunomodulatory, apoptotic, and antimetastatic effects. Thus, it's time to move one step further to utilize metabiotics more smartly by avoiding the risks associated with probiotics even in certain normal/or immuno compromised host. Here, an attempt is made to provide insight into the adverse effects associated with probiotics and beneficial aspects of metabiotics with main emphasis on the modulatory mechanisms involved in colon cancer.
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Affiliation(s)
- Mridul Sharma
- Department of Microbiology, Panjab University Chandigarh, India
| | - Geeta Shukla
- Department of Microbiology, Panjab University Chandigarh, India
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1513
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Mima K, Nishihara R, Qian ZR, Cao Y, Sukawa Y, Nowak JA, Yang J, Dou R, Masugi Y, Song M, Kostic AD, Giannakis M, Bullman S, Milner DA, Baba H, Giovannucci EL, Garraway LA, Freeman GJ, Dranoff G, Garrett WS, Huttenhower C, Meyerson M, Meyerhardt JA, Chan AT, Fuchs CS, Ogino S. Fusobacterium nucleatum in colorectal carcinoma tissue and patient prognosis. Gut 2016; 65:1973-1980. [PMID: 26311717 PMCID: PMC4769120 DOI: 10.1136/gutjnl-2015-310101] [Citation(s) in RCA: 659] [Impact Index Per Article: 82.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 07/27/2015] [Accepted: 08/08/2015] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Accumulating evidence links the intestinal microbiota and colorectal carcinogenesis. Fusobacterium nucleatum may promote colorectal tumour growth and inhibit T cell-mediated immune responses against colorectal tumours. Thus, we hypothesised that the amount of F. nucleatum in colorectal carcinoma might be associated with worse clinical outcome. DESIGN We used molecular pathological epidemiology database of 1069 rectal and colon cancer cases in the Nurses' Health Study and the Health Professionals Follow-up Study, and measured F. nucleatum DNA in carcinoma tissue. Cox proportional hazards model was used to compute hazard ratio (HR), controlling for potential confounders, including microsatellite instability (MSI, mismatch repair deficiency), CpG island methylator phenotype (CIMP), KRAS, BRAF, and PIK3CA mutations, and LINE-1 hypomethylation (low-level methylation). RESULTS Compared with F. nucleatum-negative cases, multivariable HRs (95% CI) for colorectal cancer-specific mortality in F. nucleatum-low cases and F. nucleatum-high cases were 1.25 (0.82 to 1.92) and 1.58 (1.04 to 2.39), respectively, (p for trend=0.020). The amount of F. nucleatum was associated with MSI-high (multivariable odd ratio (OR), 5.22; 95% CI 2.86 to 9.55) independent of CIMP and BRAF mutation status, whereas CIMP and BRAF mutation were associated with F. nucleatum only in univariate analyses (p<0.001) but not in multivariate analysis that adjusted for MSI status. CONCLUSIONS The amount of F. nucleatum DNA in colorectal cancer tissue is associated with shorter survival, and may potentially serve as a prognostic biomarker. Our data may have implications in developing cancer prevention and treatment strategies through targeting GI microflora by diet, probiotics and antibiotics.
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Affiliation(s)
- Kosuke Mima
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
| | - Reiko Nishihara
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA,Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA,Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Zhi Rong Qian
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
| | - Yin Cao
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Yasutaka Sukawa
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
| | - Jonathan A. Nowak
- Department of Pathology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - Juhong Yang
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA,Collaborative Innovation Center of Tianjin for Medical Epigenetics, Key Laboratory of Hormone and Development, Metabolic Disease Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - Ruoxu Dou
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
| | - Yohei Masugi
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
| | - Mingyang Song
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Aleksandar D. Kostic
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA,Center for Computational and Integrative Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Marios Giannakis
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA,Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - Susan Bullman
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA
| | - Danny A. Milner
- Department of Pathology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA,Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Hideo Baba
- Department of Gastroenterological Surgery, Graduate School of Medical Science, Kumamoto University, Kumamoto, Japan
| | - Edward L. Giovannucci
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA,Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - Levi A. Garraway
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA,Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - Gordon J. Freeman
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA,Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - Glenn Dranoff
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA,Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA,Cancer Vaccine Center, Dana-Farber Cancer Institute, Boston, MA
| | - Wendy S. Garrett
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA,Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Curtis Huttenhower
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA,Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Matthew Meyerson
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA,Department of Pathology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA
| | - Jeffrey A. Meyerhardt
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
| | - Andrew T. Chan
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA,Division of Gastroenterology, Massachusetts General Hospital, Boston, MA
| | - Charles S. Fuchs
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA,Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - Shuji Ogino
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA,Department of Pathology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
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1514
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Abstract
Colorectal cancer is one of the so-called westernized diseases and the second leading cause of cancer death worldwide. On the basis of global epidemiological and scientific studies, evidence suggests that the risk of colorectal cancer is increased by processed and unprocessed meat consumption but suppressed by fibre, and that food composition affects colonic health and cancer risk via its effects on colonic microbial metabolism. The gut microbiota can ferment complex dietary residues that are resistant to digestion by enteric enzymes. This process provides energy for the microbiota but culminates in the release of short-chain fatty acids including butyrate, which are utilized for the metabolic needs of the colon and the body. Butyrate has a remarkable array of colonic health-promoting and antineoplastic properties: it is the preferred energy source for colonocytes, it maintains mucosal integrity and it suppresses inflammation and carcinogenesis through effects on immunity, gene expression and epigenetic modulation. Protein residues and fat-stimulated bile acids are also metabolized by the microbiota to inflammatory and/or carcinogenic metabolites, which increase the risk of neoplastic progression. This Review will discuss the mechanisms behind these microbial metabolite effects, which could be modified by diet to achieve the objective of preventing colorectal cancer in Western societies.
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1515
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Watt E, Gemmell MR, Berry S, Glaire M, Farquharson F, Louis P, Murray GI, El-Omar E, Hold GL. Extending colonic mucosal microbiome analysis-assessment of colonic lavage as a proxy for endoscopic colonic biopsies. MICROBIOME 2016; 4:61. [PMID: 27884202 PMCID: PMC5123352 DOI: 10.1186/s40168-016-0207-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 11/07/2016] [Indexed: 05/11/2023]
Abstract
BACKGROUND Sequencing-based analysis has become a well-established approach to deciphering the composition of the gut microbiota. However, due to the complexity of accessing sufficient material from colonoscopic biopsy samples, most studies have focused on faecal microbiota analysis, even though it is recognised that differences exist between the microbial composition of colonic biopsies and faecal samples. We determined the suitability of colonic lavage samples to see if it had comparable microbial diversity composition to colonic biopsies as they are without the limitations associated with sample size. We collected paired colonic biopsies and lavage samples from subjects who were attending for colorectal cancer screening colonoscopy. RESULTS Next-generation sequencing and qPCR validation were performed with multiple bioinformatics analyses to determine the composition and predict function of the microbiota. Colonic lavage samples contained significantly higher numbers of operational taxonomic units (OTUs) compared to corresponding biopsy samples, however, diversity and evenness between lavage and biopsy samples were similar. The differences seen were driven by the presence of 12 OTUs which were in higher relative abundance in biopsies and were either not present or in low relative abundance in lavage samples, whilst a further 3 OTUs were present in higher amounts in the lavage samples compared to biopsy samples. However, predicted functional community profiling based on 16S ribosomal ribonucleic acid (rRNA) data indicated minimal differences between sample types. CONCLUSIONS We propose that colonic lavage samples provide a relatively accurate representation of biopsy microbiota composition and should be considered where biopsy size is an issue.
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Affiliation(s)
- Euan Watt
- Gastrointestinal Research Group, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, AB25 2ZD UK
| | - Matthew R. Gemmell
- Centre for Genome Enabled Biology and Medicine, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, AB25 2ZD UK
| | - Susan Berry
- Gastrointestinal Research Group, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, AB25 2ZD UK
| | - Mark Glaire
- Gastrointestinal Research Group, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, AB25 2ZD UK
| | - Freda Farquharson
- Rowett Institute of Nutrition and Health, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, AB25 2ZD UK
| | - Petra Louis
- Rowett Institute of Nutrition and Health, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, AB25 2ZD UK
| | - Graeme I. Murray
- Department of Pathology, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, AB25 2ZD UK
| | - Emad El-Omar
- Gastrointestinal Research Group, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, AB25 2ZD UK
- St George and Sutherland Clinical School, University of New South Wales, St George Hospital, Short Street, Kogarah, Sydney, NSW 2217 Australia
| | - Georgina L. Hold
- Gastrointestinal Research Group, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, AB25 2ZD UK
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1516
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Momen-Heravi F, Babic A, Tworoger SS, Zhang L, Wu K, Smith-Warner SA, Ogino S, Chan AT, Meyerhardt J, Giovannucci E, Fuchs C, Cho E, Michaud DS, Stampfer MJ, Yu YH, Kim D, Zhang X. Periodontal disease, tooth loss and colorectal cancer risk: Results from the Nurses' Health Study. Int J Cancer 2016; 140:646-652. [PMID: 27778343 DOI: 10.1002/ijc.30486] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 09/09/2016] [Accepted: 10/11/2016] [Indexed: 12/16/2022]
Abstract
Periodontal diseases including tooth loss might increase systemic inflammation, lead to immune dysregulation and alter gut microbiota, thereby possibly influencing colorectal carcinogenesis. Few epidemiological studies have examined the association between periodontal diseases and colorectal cancer (CRC) risk. We collected information on the periodontal disease (defined as history of periodontal bone loss) and number of natural teeth in the Nurses' Health Study. A total of 77,443 women were followed since 1992. We used Cox proportional hazard models to calculate multivariable hazard ratios (HRs) and 95% confidence intervals (95% CIs) after adjustment for smoking and other known risk factors for CRC. We documented 1,165 incident CRC through 2010. Compared to women with 25-32 teeth, the multivariable HR (95% CI) for CRC for women with <17 teeth was 1.20 (1.04-1.39). With regard to tumor site, the HRs (95% CIs) for the same comparison were 1.23 (1.01-1.51) for proximal colon cancer, 1.03 (0.76-1.38) for distal colon cancer and 1.48 (1.07-2.05) for rectal cancer. In addition, compared to those without periodontal disease, HRs for CRC were 0.91 (95% CI 0.74-1.12) for periodontal disease, and 1.22 (95% CI 0.91-1.63) when limited to moderate to severe periodontal disease. The results were not modified by smoking status, body mass index or alcohol consumption. Women with fewer teeth, possibly moderate or severe periodontal disease, might be at a modest increased risk of developing CRC, suggesting a potential role of oral health in colorectal carcinogenesis.
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Affiliation(s)
- Fatemeh Momen-Heravi
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA.,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA.,Division of Periodontics, Section of Oral and Diagnostic Sciences, Columbia University College of Dental Medicine, New York, NY
| | - Ana Babic
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA.,Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
| | - Shelley S Tworoger
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA.,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Libin Zhang
- Institute for Community Inclusion, University of Massachusetts, Boston, MA
| | - Kana Wu
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Stephanie A Smith-Warner
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA.,Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Shuji Ogino
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA.,Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA.,Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Andrew T Chan
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA.,Division of Gastroenterology, Massachusetts General Hospital, Boston, MA
| | - Jeffrey Meyerhardt
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
| | - Edward Giovannucci
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA.,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA.,Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Charles Fuchs
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
| | - Eunyoung Cho
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA.,Department of Dermatology, The Warren Alpert Medical School of Brown University, Providence, RI.,Department of Epidemiology, Brown University School of Public Health, Providence, RI
| | - Dominique S Michaud
- Department of Epidemiology, Brown University School of Public Health, Providence, RI.,Department of Public Health and Community Medicine, Tufts University School of Medicine, Boston, MA
| | - Meir J Stampfer
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA.,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA.,Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Yau-Hua Yu
- Harvard School of Dental Medicine, Boston, MA
| | - David Kim
- Harvard School of Dental Medicine, Boston, MA
| | - Xuehong Zhang
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
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1517
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Li H, Zhang P. Role of intestinal microecology in precision treatment of colorectal cancer. Shijie Huaren Xiaohua Zazhi 2016; 24:4354-4361. [DOI: 10.11569/wcjd.v24.i32.4354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Recently, the role of intestinal microecology in diseases has attracted increasing attention. Some progress has been achieved in the study of the colorectum, which is the carrier of intestinal microecology, and the role of intestinal microecology in colorectal cancer (CRC) formation and progression has been clarified gradually. More and more studies show that intestinal microecology plays a key role in CRC related precision treatments, such as tumor immunotherapy, chemotherapy and probiotic intervention, which have achieved certain curative effects in clinical treatment, although the mechanism still needs further study. This review briefly discusses the intestinal microecology related precision treatments for CRC and their potential mechanisms.
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1518
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Lennard KS, Goosen RW, Blackburn JM. Bacterially-Associated Transcriptional Remodelling in a Distinct Genomic Subtype of Colorectal Cancer Provides a Plausible Molecular Basis for Disease Development. PLoS One 2016; 11:e0166282. [PMID: 27846243 PMCID: PMC5112903 DOI: 10.1371/journal.pone.0166282] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 10/26/2016] [Indexed: 02/06/2023] Open
Abstract
The relevance of specific microbial colonisation to colorectal cancer (CRC) disease pathogenesis is increasingly recognised, but our understanding of possible underlying molecular mechanisms that may link colonisation to disease in vivo remains limited. Here, we investigate the relationships between the most commonly studied CRC-associated bacteria (Enterotoxigenic Bacteroides fragilis, pks+ Escherichia coli, Fusobacterium spp., afaC+ E. coli, Enterococcus faecalis & Enteropathogenic E. coli) and altered transcriptomic and methylation profiles of CRC patients, in order to gain insight into the potential contribution of these bacteria in the aetiopathogenesis of CRC. We show that colonisation by E. faecalis and high levels of Fusobacterium is associated with a specific transcriptomic subtype of CRC that is characterised by CpG island methylation, microsatellite instability and a significant increase in inflammatory and DNA damage pathways. Analysis of the significant, bacterially-associated changes in host gene expression, both at the level of individual genes as well as pathways, revealed a transcriptional remodeling that provides a plausible mechanistic link between specific bacterial colonisation and colorectal cancer disease development and progression in this subtype; these included upregulation of REG3A, REG1A and REG1P in the case of high-level colonization by Fusobacterium, and CXCL10 and BMI1 in the case of colonisation by E. faecalis. The enrichment of both E. faecalis and Fusobacterium in this CRC subtype suggests that polymicrobial colonisation of the colonic epithelium may well be an important aspect of colonic tumourigenesis.
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Affiliation(s)
- Katie S. Lennard
- Institute of Infectious Disease and Molecular Medicine & Department of Integrative Biomedical Sciences, University of Cape Town, Cape Town, South Africa
| | - Ryan W. Goosen
- Institute of Infectious Disease and Molecular Medicine & Department of Integrative Biomedical Sciences, University of Cape Town, Cape Town, South Africa
| | - Jonathan M. Blackburn
- Institute of Infectious Disease and Molecular Medicine & Department of Integrative Biomedical Sciences, University of Cape Town, Cape Town, South Africa
- * E-mail:
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1519
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Tang B, Wang K, Jia YP, Zhu P, Fang Y, Zhang ZJ, Mao XH, Li Q, Zeng DZ. Fusobacterium nucleatum-Induced Impairment of Autophagic Flux Enhances the Expression of Proinflammatory Cytokines via ROS in Caco-2 Cells. PLoS One 2016; 11:e0165701. [PMID: 27828984 PMCID: PMC5102440 DOI: 10.1371/journal.pone.0165701] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 10/17/2016] [Indexed: 12/16/2022] Open
Abstract
Fusobacterium nucleatum (F. nucleatum) plays a critical role in gastrointestinal inflammation. However, the exact mechanism by which F. nucleatum contributes to inflammation is unclear. In the present study, it was revealed that F. nucleatum could induce the production of proinflammatory cytokines (IL-8, IL-1β and TNF-α) and reactive oxygen species (ROS) in Caco-2 colorectal) adenocarcinoma cells. Furthermore, ROS scavengers (NAC or Tiron) could decrease the production of proinflammatory cytokines during F. nucleatum infection. In addition, we observed that autophagy is impaired in Caco-2 cells after F. nucleatum infection. The production of proinflammatory cytokines and ROS induced by F. nucleatum was enhanced with either autophagy pharmacologic inhibitors (3-methyladenine, bafilomycin A1) or RNA interference in essential autophagy genes (ATG5 or ATG12) in Caco-2 cells. Taken together, these results indicate that F. nucleatum-induced impairment of autophagic flux enhances the expression of proinflammatory cytokines via ROS in Caco-2 Cells.
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Affiliation(s)
- Bin Tang
- Department of Clinical Microbiology and Immunology, Southwest Hospital & College of Medical Laboratory Science, Third Military Medical University, Chongqing, China
- Emei Sanatorium of PLA Rocket Force, Emeishan, China
| | - Kun Wang
- Department of Clinical Microbiology and Immunology, Southwest Hospital & College of Medical Laboratory Science, Third Military Medical University, Chongqing, China
| | - Yin-ping Jia
- Department of Clinical Microbiology and Immunology, Southwest Hospital & College of Medical Laboratory Science, Third Military Medical University, Chongqing, China
| | - Pan Zhu
- Department of Clinical Microbiology and Immunology, Southwest Hospital & College of Medical Laboratory Science, Third Military Medical University, Chongqing, China
| | - Yao Fang
- Department of Clinical Microbiology and Immunology, Southwest Hospital & College of Medical Laboratory Science, Third Military Medical University, Chongqing, China
| | - Zhu-jun Zhang
- Department of Clinical Microbiology and Immunology, Southwest Hospital & College of Medical Laboratory Science, Third Military Medical University, Chongqing, China
| | - Xu-hu Mao
- Department of Clinical Microbiology and Immunology, Southwest Hospital & College of Medical Laboratory Science, Third Military Medical University, Chongqing, China
| | - Qian Li
- Department of Clinical Microbiology and Immunology, Southwest Hospital & College of Medical Laboratory Science, Third Military Medical University, Chongqing, China
- * E-mail: (DZZ); (QL)
| | - Dong-Zhu Zeng
- Department of General Surgery and Center of Minimal Invasive Gastrointestinal Surgery, Southwest Hospital, Third Military Medical University, Chongqing, China
- * E-mail: (DZZ); (QL)
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1520
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Mima K, Cao Y, Chan AT, Qian ZR, Nowak JA, Masugi Y, Shi Y, Song M, da Silva A, Gu M, Li W, Hamada T, Kosumi K, Hanyuda A, Liu L, Kostic AD, Giannakis M, Bullman S, Brennan CA, Milner DA, Baba H, Garraway LA, Meyerhardt JA, Garrett WS, Huttenhower C, Meyerson M, Giovannucci EL, Fuchs CS, Nishihara R, Ogino S. Fusobacterium nucleatum in Colorectal Carcinoma Tissue According to Tumor Location. Clin Transl Gastroenterol 2016; 7:e200. [PMID: 27811909 PMCID: PMC5543402 DOI: 10.1038/ctg.2016.53] [Citation(s) in RCA: 203] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Accepted: 09/13/2016] [Indexed: 02/06/2023] Open
Abstract
Objectives: Evidence suggests a possible role of Fusobacterium nucleatum in colorectal carcinogenesis, especially in right-sided proximal colorectum. Considering a change in bowel contents and microbiome from proximal to distal colorectal segments, we hypothesized that the proportion of colorectal carcinoma enriched with F. nucleatum might gradually increase along the bowel subsites from rectum to cecum. Methods: A retrospective, cross-sectional analysis was conducted on 1,102 colon and rectal carcinomas in molecular pathological epidemiology databases of the Nurses’ Health Study and the Health Professionals Follow-up Study. We measured the amount of F. nucleatum DNA in colorectal tumor tissue using a quantitative PCR assay and equally dichotomized F. nucleatum-positive cases (high vs. low). We used multivariable logistic regression analysis to examine the relationship of a bowel subsite variable (rectum, rectosigmoid junction, sigmoid colon, descending colon, splenic flexure, transverse colon, hepatic flexure, ascending colon, and cecum) with the amount of F. nucleatum. Results: The proportion of F. nucleatum-high colorectal cancers gradually increased from rectal cancers (2.5% 4/157) to cecal cancers (11% 19/178), with a statistically significant linear trend along all subsites (P<0.0001) and little evidence of non-linearity. The proportion of F. nucleatum-low cancers was higher in rectal, ascending colon, and cecal cancers than in cancers of middle segments. Conclusions: The proportion of F. nucleatum-high colorectal cancers gradually increases from rectum to cecum. Our data support the colorectal continuum model that reflects pathogenic influences of the gut microbiota on neoplastic and immune cells and challenges the prevailing two-colon (proximal vs. distal) dichotomy paradigm.
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Affiliation(s)
- Kosuke Mima
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA
| | - Yin Cao
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA.,Division of Gastroenterology, Massachusetts General Hospital, Boston, Massachusetts, USA.,Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Andrew T Chan
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA.,Division of Gastroenterology, Massachusetts General Hospital, Boston, Massachusetts, USA.,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Zhi Rong Qian
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA
| | - Jonathan A Nowak
- Division of MPE Molecular Pathological Epidemiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Yohei Masugi
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA
| | - Yan Shi
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA
| | - Mingyang Song
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA.,Division of Gastroenterology, Massachusetts General Hospital, Boston, Massachusetts, USA.,Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Annacarolina da Silva
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA
| | - Mancang Gu
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA
| | - Wanwan Li
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA
| | - Tsuyoshi Hamada
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA
| | - Keisuke Kosumi
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA
| | - Akiko Hanyuda
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA
| | - Li Liu
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA
| | - Aleksandar D Kostic
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts, USA.,Center for Computational and Integrative Biology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Marios Giannakis
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA.,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts, USA.,Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Susan Bullman
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA.,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts, USA
| | - Caitlin A Brennan
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Danny A Milner
- Division of MPE Molecular Pathological Epidemiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA.,Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Hideo Baba
- Department of Gastroenterological Surgery, Graduate School of Medical Science, Kumamoto University, Kumamoto, Japan
| | - Levi A Garraway
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA.,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts, USA.,Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Jeffrey A Meyerhardt
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA
| | - Wendy S Garrett
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA.,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts, USA.,Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Curtis Huttenhower
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts, USA.,Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Matthew Meyerson
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA.,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts, USA
| | - Edward L Giovannucci
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA.,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Charles S Fuchs
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA.,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Reiko Nishihara
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA.,Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.,Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Shuji Ogino
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, USA.,Division of MPE Molecular Pathological Epidemiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA.,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
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1521
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Mitra A, MacIntyre DA, Marchesi JR, Lee YS, Bennett PR, Kyrgiou M. The vaginal microbiota, human papillomavirus infection and cervical intraepithelial neoplasia: what do we know and where are we going next? MICROBIOME 2016; 4:58. [PMID: 27802830 PMCID: PMC5088670 DOI: 10.1186/s40168-016-0203-0] [Citation(s) in RCA: 255] [Impact Index Per Article: 31.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 10/12/2016] [Indexed: 05/02/2023]
Abstract
The vaginal microbiota plays a significant role in health and disease of the female reproductive tract. Next-generation sequencing techniques based upon the analysis of bacterial 16S rRNA genes permit in-depth study of vaginal microbial community structure to a level of detail not possible with standard culture-based microbiological techniques. The human papillomavirus (HPV) causes both cervical intraepithelial neoplasia (CIN) and cervical cancer. Although the virus is highly prevalent, only a small number of women have a persistent HPV infection and subsequently develop clinically significant disease. There is emerging evidence which leads us to conclude that increased diversity of vaginal microbiota combined with reduced relative abundance of Lactobacillus spp. is involved in HPV acquisition and persistence and the development of cervical precancer and cancer. In this review, we summarise the current literature and discuss potential mechanisms for the involvement of vaginal microbiota in the evolution of CIN and cervical cancer. The concept of manipulation of vaginal bacterial communities using pre- and probiotics is also discussed as an exciting prospect for the field of cervical pathology.
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Affiliation(s)
- Anita Mitra
- Institute of Reproductive and Developmental Biology, Hammersmith Hospital Campus, Department of Surgery and Cancer, Imperial College London, Du Cane Road, W120NN, London, UK
- Department of Obstetrics and Gynaecology, Queen Charlotte's and Chelsea-Hammersmith Hospital, Imperial Healthcare NHS Trust, London, UK
| | - David A MacIntyre
- Institute of Reproductive and Developmental Biology, Hammersmith Hospital Campus, Department of Surgery and Cancer, Imperial College London, Du Cane Road, W120NN, London, UK.
| | - Julian R Marchesi
- School of Biosciences, Cardiff University, Cardiff, UK
- Division of Digestive Diseases, St. Mary's Hospital, Imperial College London, South Wharf Road, London, UK
- Centre for Digestive and Gut Health, Imperial College London, London, UK
| | - Yun S Lee
- Institute of Reproductive and Developmental Biology, Hammersmith Hospital Campus, Department of Surgery and Cancer, Imperial College London, Du Cane Road, W120NN, London, UK
| | - Phillip R Bennett
- Institute of Reproductive and Developmental Biology, Hammersmith Hospital Campus, Department of Surgery and Cancer, Imperial College London, Du Cane Road, W120NN, London, UK
- Department of Obstetrics and Gynaecology, Queen Charlotte's and Chelsea-Hammersmith Hospital, Imperial Healthcare NHS Trust, London, UK
| | - Maria Kyrgiou
- Institute of Reproductive and Developmental Biology, Hammersmith Hospital Campus, Department of Surgery and Cancer, Imperial College London, Du Cane Road, W120NN, London, UK.
- Department of Obstetrics and Gynaecology, Queen Charlotte's and Chelsea-Hammersmith Hospital, Imperial Healthcare NHS Trust, London, UK.
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1522
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Hegarty JW, Guinane CM, Ross RP, Hill C, Cotter PD. Bacteriocin production: a relatively unharnessed probiotic trait? F1000Res 2016; 5:2587. [PMID: 27853525 PMCID: PMC5089130 DOI: 10.12688/f1000research.9615.1] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/20/2016] [Indexed: 01/09/2023] Open
Abstract
Probiotics are “live microorganisms which, when consumed in adequate amounts, confer a health benefit to the host”. A number of attributes are highly sought after among these microorganisms, including immunomodulation, epithelial barrier maintenance, competitive exclusion, production of short-chain fatty acids, and bile salt metabolism. Bacteriocin production is also generally regarded as a probiotic trait, but it can be argued that, in contrast to other traits, it is often considered a feature that is desirable, rather than a key probiotic trait. As such, the true potential of these antimicrobials has yet to be realised.
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Affiliation(s)
- James W Hegarty
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland; Department of Microbiology, University College Cork, Cork, Ireland
| | | | - R Paul Ross
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland; APC Microbiome Institute, University College Cork, Cork, Ireland
| | - Colin Hill
- Department of Microbiology, University College Cork, Cork, Ireland; APC Microbiome Institute, University College Cork, Cork, Ireland
| | - Paul D Cotter
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland; APC Microbiome Institute, University College Cork, Cork, Ireland
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1523
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Yamamura K, Baba Y, Nakagawa S, Mima K, Miyake K, Nakamura K, Sawayama H, Kinoshita K, Ishimoto T, Iwatsuki M, Sakamoto Y, Yamashita Y, Yoshida N, Watanabe M, Baba H. Human Microbiome Fusobacterium Nucleatum in Esophageal Cancer Tissue Is Associated with Prognosis. Clin Cancer Res 2016; 22:5574-5581. [PMID: 27769987 DOI: 10.1158/1078-0432.ccr-16-1786] [Citation(s) in RCA: 282] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 08/06/2016] [Accepted: 08/13/2016] [Indexed: 02/06/2023]
Abstract
PURPOSE Fusobacterium nucleatum (F. nucleatum) is a component of the human microbiome that primarily inhabits the oral cavity. It causes periodontal disease and has also been implicated in the development of human cancers. Although there are several reports of the relationship between F. nucleatum and the clinical outcome in human cancers, its prognostic significance in esophageal cancer remains unclear. EXPERIMENTAL DESIGN We quantified F. nucleatum DNA in 325 resected esophageal cancer specimens by qPCR. Significant pathways in F. nucleatum-positive esophageal cancer tissues were identified by Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis using microarray data. RESULTS Esophageal cancer tissues contained significantly more F. nucleatum DNA than matched normal esophageal mucosa (P = 0.021; n = 60). F. nucleatum DNA was detected in 74 of 325 cases (23%). F. nucleatum DNA positivity was significantly associated with tumor stage, but not with sex, age, performance status, tobacco use, alcohol use, histology, tumor location, or preoperative treatment. F. nucleatum DNA positivity was also significantly associated with cancer-specific survival [log-rank P = 0.0039; univariate HR = 2.01; 95% confidence interval (CI), 1.22-3.23; P = 0.0068; multivariate HR = 1.78; 95% CI, 1.06-2.94; P = 0.031]. The top-ranked KEGG pathway in F. nucleatum-positive tissues was "cytokine-cytokine receptor interaction." A significant relationship between F. nucleatum and the chemokine CCL20 was validated by IHC. CONCLUSIONS F. nucleatum in esophageal cancer tissues was associated with shorter survival, suggesting a potential role as a prognostic biomarker. F. nucleatum might also contribute to aggressive tumor behavior through activation of chemokines, such as CCL20. Clin Cancer Res; 22(22); 5574-81. ©2016 AACR.
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Affiliation(s)
- Kensuke Yamamura
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yoshifumi Baba
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Shigeki Nakagawa
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kosuke Mima
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Keisuke Miyake
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kenichi Nakamura
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Hiroshi Sawayama
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Koichi Kinoshita
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Takatsugu Ishimoto
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Masaaki Iwatsuki
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yasuo Sakamoto
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yoichi Yamashita
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Naoya Yoshida
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Masayuki Watanabe
- Department of Gastroenterological Surgery, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Hideo Baba
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
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1524
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Liang Q, Chiu J, Chen Y, Huang Y, Higashimori A, Fang J, Brim H, Ashktorab H, Ng SC, Ng SSM, Zheng S, Chan FKL, Sung JJY, Yu J. Fecal Bacteria Act as Novel Biomarkers for Noninvasive Diagnosis of Colorectal Cancer. Clin Cancer Res 2016; 23:2061-2070. [PMID: 27697996 DOI: 10.1158/1078-0432.ccr-16-1599] [Citation(s) in RCA: 210] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 09/01/2016] [Accepted: 09/14/2016] [Indexed: 02/06/2023]
Abstract
Purpose: Gut microbiota have been implicated in the development of colorectal cancer. We evaluated the utility of fecal bacterial marker candidates identified by our metagenome sequencing analysis for colorectal cancer diagnosis.Experimental Design: Subjects (total 439; 203 colorectal cancer and 236 healthy subjects) from two independent Asian cohorts were included. Probe-based duplex quantitative PCR (qPCR) assays were established for the quantification of bacterial marker candidates.Results: Candidates identified by metagenome sequencing, including Fusobacterium nucleatum (Fn), Bacteroides clarus (Bc), Roseburia intestinalis (Ri), Clostridium hathewayi (Ch), and one undefined species (labeled as m7), were examined in fecal samples of 203 colorectal cancer patients and 236 healthy controls by duplex-qPCR. Strong positive correlations were demonstrated between the quantification of each candidate by our qPCR assays and metagenomics approach (r = 0.801-0.934, all P < 0.0001). Fn was significantly more abundant in colorectal cancer than controls (P < 0.0001), with AUROC of 0.868 (P < 0.0001). At the best cut-off value maximizing sum of sensitivity and specificity, Fn discriminated colorectal cancer from controls with a sensitivity of 77.7%, and specificity of 79.5% in cohort I. A simple linear combination of four bacteria (Fn + Ch + m7-Bc) showed an improved diagnostic ability compared with Fn alone (AUROC = 0.886, P < 0.0001) in cohort I. These findings were further confirmed in an independent cohort II. In particular, improved diagnostic performances of Fn alone (sensitivity 92.8%, specificity 79.8%) and four bacteria (sensitivity 92.8%, specificity 81.5%) were achieved in combination with fecal immunochemical testing for the detection of colorectal cancer.Conclusions: Stool-based colorectal cancer-associated bacteria can serve as novel noninvasive diagnostic biomarkers for colorectal cancer. Clin Cancer Res; 23(8); 2061-70. ©2016 AACR.
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Affiliation(s)
- Qiaoyi Liang
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China.
| | - Jonathan Chiu
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China
| | - Yingxuan Chen
- Division of Gastroenterology & Hepatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Yanqin Huang
- Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences, Cancer Institute, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Akira Higashimori
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China.,Department of Gastroenterology, Osaka City University Graduate School of Medicine, Abeno-ku, Osaka, Japan
| | - Jingyuan Fang
- Division of Gastroenterology & Hepatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Hassan Brim
- Cancer Center and Pathology Department, Howard University College of Medicine, Washington, DC
| | - Hassan Ashktorab
- Cancer Center and Pathology Department, Howard University College of Medicine, Washington, DC
| | - Siew Chien Ng
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China
| | - Simon Siu Man Ng
- Department of Surgery, The Chinese University of Hong Kong, Hong Kong, China
| | - Shu Zheng
- Division of Gastroenterology & Hepatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Francis Ka Leung Chan
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China
| | - Joseph Jao Yiu Sung
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China
| | - Jun Yu
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China.
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1525
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Lagha AB, Grenier D. Tea polyphenols inhibit the activation of NF-κB and the secretion of cytokines and matrix metalloproteinases by macrophages stimulated with Fusobacterium nucleatum. Sci Rep 2016; 6:34520. [PMID: 27694921 PMCID: PMC5046134 DOI: 10.1038/srep34520] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 09/15/2016] [Indexed: 12/21/2022] Open
Abstract
Fusobacterium nucleatum has been associated with both periodontal disease and inflammatory bowel disease. This Gram-negative bacterium possesses a high inflammatory potential that may contribute to the disease process. We hypothesized that green and black tea polyphenols attenuate the inflammatory response of monocytes/macrophages mediated by F. nucleatum. We first showed that the tea extracts, EGCG and theaflavins reduce the NF-κB activation induced by F. nucleatum in monocytes. Since NF-κB is a key regulator of genes coding for inflammatory mediators, we tested the effects of tea polyphenols on secretion of IL-1β, IL-6, TNF-α, and CXCL8 by macrophages. A pre-treatment of macrophages with the tea extracts, EGCG, or theaflavins prior to a stimulation with F. nucleatum significantly inhibited the secretion of all four cytokines and reduced the secretion of MMP-3 and MMP-9, two tissue destructive enzymes. TREM-1 expressed by macrophages is a cell-surface receptor involved in the propagation of the inflammatory response to bacterial challenges. Interestingly, tea polyphenols inhibited the secretion/shedding of soluble TREM-1 induced by a stimulation of macrophages with F. nucleatum. The anti-inflammatory properties of tea polyphenols identified in the present study suggested that they may be promising agents for the prevention and/or treatment of periodontal disease and inflammatory bowel disease.
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Affiliation(s)
- Amel Ben Lagha
- Oral Ecology Research Group, Faculty of Dentistry, Université Laval, Quebec City, QC, Canada
| | - Daniel Grenier
- Oral Ecology Research Group, Faculty of Dentistry, Université Laval, Quebec City, QC, Canada
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1526
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Coleman OI, Nunes T. Role of the Microbiota in Colorectal Cancer: Updates on Microbial Associations and Therapeutic Implications. Biores Open Access 2016; 5:279-288. [PMID: 27790385 PMCID: PMC5076480 DOI: 10.1089/biores.2016.0028] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Genetic, environmental, and dietary factors have been found to influence the development and progression of colorectal cancer (CRC). More recently, accumulating evidence associates the intestinal microbiota with the initiation and progression of this disease. While studies have shown that individuals with CRC display alterations in gut bacterial composition, it remains somewhat unclear whether such differences drive cancer development or whether they are a response to tumorigenesis. In this review, the authors assess new evidence linking the community structure or specific bacterial factors of the intestinal microbiota to CRC development and progression, with insights into therapeutic implications.
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Affiliation(s)
- Olivia I Coleman
- Chair of Nutrition and Immunology, ZIEL-Research Center for Nutrition and Food Sciences, Technical University of Munich , Freising, Germany
| | - Tiago Nunes
- Chair of Nutrition and Immunology, ZIEL-Research Center for Nutrition and Food Sciences, Technical University of Munich , Freising, Germany
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1527
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1528
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Suehiro Y, Sakai K, Nishioka M, Hashimoto S, Takami T, Higaki S, Shindo Y, Hazama S, Oka M, Nagano H, Sakaida I, Yamasaki T. Highly sensitive stool DNA testing of Fusobacterium nucleatum as a marker for detection of colorectal tumours in a Japanese population. Ann Clin Biochem 2016; 54:86-91. [PMID: 27126270 DOI: 10.1177/0004563216643970] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Accumulating evidence shows an over-abundance of Fusobacterium nucleatum in colorectal tumour tissues. Although stool DNA testing of Fusobacterium nucleatum might be a potential marker for the detection of colorectal tumours, the difficulty in detecting Fusobacterium nucleatum in stool by conventional methods prevented further explorations. Therefore, we developed a droplet digital polymerase chain reaction (PCR) assay for detecting Fusobacterium nucleatum in stool and investigated its clinical utility in the management of colorectal tumours in a Japanese population. Methods Feces were collected from 60 healthy subjects (control group) and from 11 patients with colorectal non-advanced adenomas (non-advanced adenoma group), 19 patients with colorectal advanced adenoma/carcinoma in situ (advanced adenoma/carcinoma in situ (CIS) group) and 158 patients with colorectal cancer of stages I to IV (colorectal cancer group). Absolute copy numbers of Fusobacterium nucleatum were measured by droplet digital PCR. Results The median copy number of Fusobacterium nucleatum was 17.5 in the control group, 311 in the non-advanced adenoma group, 122 in the advanced adenoma/CIS group, and 317 in the colorectal cancer group. In comparison with that in the control group, the Fusobacterium nucleatum level was significantly higher in the non-advanced adenoma group, the advanced adenoma/CIS group and the colorectal cancer group. Conclusions This study illustrates the potential of stool DNA testing of Fusobacterium nucleatum by droplet digital PCR to detect individuals with colorectal tumours in a Japanese population.
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Affiliation(s)
- Yutaka Suehiro
- 1 Department of Oncology and Laboratory Medicine, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Kouhei Sakai
- 1 Department of Oncology and Laboratory Medicine, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Mitsuaki Nishioka
- 2 Division of Laboratory, Yamaguchi University Hospital, Ube, Yamaguchi, Japan
| | - Shinichi Hashimoto
- 3 Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Taro Takami
- 3 Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Shingo Higaki
- 4 Department of Gastroenterology, Sentohiru Hospital, Ube, Japan
| | - Yoshitaro Shindo
- 5 Department of Digestive Surgery and Surgical Oncology, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Shoichi Hazama
- 5 Department of Digestive Surgery and Surgical Oncology, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Masaaki Oka
- 5 Department of Digestive Surgery and Surgical Oncology, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Hiroaki Nagano
- 5 Department of Digestive Surgery and Surgical Oncology, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Isao Sakaida
- 2 Division of Laboratory, Yamaguchi University Hospital, Ube, Yamaguchi, Japan
| | - Takahiro Yamasaki
- 1 Department of Oncology and Laboratory Medicine, Yamaguchi University Graduate School of Medicine, Ube, Japan
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1529
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Binder Gallimidi A, Fischman S, Revach B, Bulvik R, Maliutina A, Rubinstein AM, Nussbaum G, Elkin M. Periodontal pathogens Porphyromonas gingivalis and Fusobacterium nucleatum promote tumor progression in an oral-specific chemical carcinogenesis model. Oncotarget 2016; 6:22613-23. [PMID: 26158901 PMCID: PMC4673186 DOI: 10.18632/oncotarget.4209] [Citation(s) in RCA: 254] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 05/26/2015] [Indexed: 02/06/2023] Open
Abstract
Oral squamous cell carcinoma (OSCC) is a lethal disease whose incidence is increasing. Epidemiologic studies demonstrate an association between periodontitis and oral cancer, and periodontal pathogens are implicated in the pathogenesis of numerous disorders, including rheumatoid arthritis, cardiovascular diseases, diabetes and gastrointestinal malignancies. Nevertheless, a causal role for periodontal pathogens in OSCC has not been shown, partly due to the lack of an appropriate animal model. Here, utilizing a newly-established murine model of periodontitis-associated oral tumorigenesis, we report that chronic bacterial infection promotes OSCC, and that augmented signaling along the IL-6-STAT3 axis underlies this effect. Our results indicate that periodontal pathogens P. gingivalis and F. nucleatum stimulate tumorigenesis via direct interaction with oral epithelial cells through Toll-like receptors. Furthermore, oral pathogens stimulate human OSCC proliferation and induce expression of key molecules implicated in tumorigenesis. To the best of our knowledge, these findings represent the first demonstration of a mechanistic role for oral bacteria in chemically induced OSCC tumorigenesis. These results are highly relevant for the design of effective prevention and treatment strategies for OSCC.
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Affiliation(s)
- Adi Binder Gallimidi
- Sharett Oncology Institute, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.,Institute of Dental Sciences, Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem, Israel
| | - Stuart Fischman
- Institute of Dental Sciences, Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem, Israel
| | - Brurya Revach
- Sharett Oncology Institute, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Raanan Bulvik
- Sharett Oncology Institute, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Alina Maliutina
- Institute of Dental Sciences, Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem, Israel
| | - Ariel M Rubinstein
- Sharett Oncology Institute, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Gabriel Nussbaum
- Institute of Dental Sciences, Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem, Israel
| | - Michael Elkin
- Sharett Oncology Institute, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
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1530
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Perera M, Al-Hebshi NN, Speicher DJ, Perera I, Johnson NW. Emerging role of bacteria in oral carcinogenesis: a review with special reference to perio-pathogenic bacteria. J Oral Microbiol 2016; 8:32762. [PMID: 27677454 PMCID: PMC5039235 DOI: 10.3402/jom.v8.32762] [Citation(s) in RCA: 137] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 08/23/2016] [Accepted: 08/25/2016] [Indexed: 12/16/2022] Open
Abstract
Oral cancer, primarily oral squamous cell carcinoma (OSCC), continues to be a major global health problem with high incidence and low survival rates. While the major risk factors for this malignancy, mostly lifestyle related, have been identified, around 15% of oral cancer cases remain unexplained. In light of evidence implicating bacteria in the aetiology of some cancer types, several epidemiological studies have been conducted in the last decade, employing methodologies ranging from traditional culture techniques to 16S rRNA metagenomics, to assess the possible role of bacteria in OSCC. While these studies have demonstrated differences in microbial composition between cancerous and healthy tissues, they have failed to agree on specific bacteria or patterns of oral microbial dysbiosis to implicate in OSCC. On the contrary, some oral taxa, particularly Porphyromonas gingivalis and Fusobacterium nucleatum, show strong oral carcinogenic potential in vitro and in animal studies. Bacteria are thought to contribute to oral carcinogenesis via inhibition of apoptosis, activation of cell proliferation, promotion of cellular invasion, induction of chronic inflammation, and production of carcinogens. This narrative review provides a critical analysis of and an update on the association between bacteria and oral carcinogenesis and the possible mechanisms underlying it.
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Affiliation(s)
- Manosha Perera
- School of Dentistry and Oral Health, Griffith University, Queensland, Southport, Australia;
| | - Nezar Noor Al-Hebshi
- Department of Preventive Dentistry, College of Dentistry, Jazan University, Jazan, Saudi Arabia; .,Kornberg School of Dentistry, Temple University, Philadelphia, USA
| | - David J Speicher
- Menzies Health Institute Queensland, Griffith University, Queensland, Southport, Australia
| | - Irosha Perera
- Community Dental Unit, Dental Institute, Colombo, Sri Lanka
| | - Newell W Johnson
- Menzies Health Institute Queensland, Griffith University, Queensland, Southport, Australia
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1531
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Goyal S, Nangia-Makker P, Farhana L, Yu Y, Majumdar APN. Racial disparity in colorectal cancer: Gut microbiome and cancer stem cells. World J Stem Cells 2016; 8:279-287. [PMID: 27679684 PMCID: PMC5031889 DOI: 10.4252/wjsc.v8.i9.279] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 06/28/2016] [Accepted: 07/22/2016] [Indexed: 02/06/2023] Open
Abstract
Over the past two decades there has been remarkable progress in cancer diagnosis, treatment and screening. The basic mechanisms leading to pathogenesis of various types of cancers are also understood better and some patients, if diagnosed at a particular stage go on to lead a normal pre-diagnosis life. Despite these achievements, racial disparity in some cancers remains a mystery. The higher incidence, aggressiveness and mortality of breast, prostate and colorectal cancers (CRCs) in African-Americans as compared to Caucasian-Americans are now well documented. The polyp-carcinoma sequence in CRC and easy access to colonic epithelia or colonic epithelial cells through colonoscopy/colonic effluent provides the opportunity to study colonic stem cells early in course of natural history of the disease. With the advent of metagenomic sequencing, uncultivable organisms can now be identified in stool and their numbers correlated with the effects on colonic epithelia. It would be expected that these techniques would revolutionize our understanding of the racial disparity in CRC and pave a way for the same in other cancers as well. Unfortunately, this has not happened. Our understanding of the underlying factors responsible in African-Americans for higher incidence and mortality from colorectal carcinoma remains minimal. In this review, we aim to summarize the available data on role of microbiome and cancer stem cells in racial disparity in CRC. This will provide a platform for further research on this topic.
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1532
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Current Hypothesis for the Relationship between Dietary Rice Bran Intake, the Intestinal Microbiota and Colorectal Cancer Prevention. Nutrients 2016; 8:nu8090569. [PMID: 27649240 PMCID: PMC5037554 DOI: 10.3390/nu8090569] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 09/07/2016] [Accepted: 09/08/2016] [Indexed: 12/17/2022] Open
Abstract
Globally, colorectal cancer (CRC) is the third most common form of cancer. The development of effective chemopreventive strategies to reduce CRC incidence is therefore of paramount importance. Over the past decade, research has indicated the potential of rice bran, a byproduct of rice milling, in CRC chemoprevention. This was recently suggested to be partly attributable to modification in the composition of intestinal microbiota when rice bran was ingested. Indeed, previous studies have reported changes in the population size of certain bacterial species, or microbial dysbiosis, in the intestines of CRC patients and animal models. Rice bran intake was shown to reverse such changes through the manipulation of the population of health-promoting bacteria in the intestine. The present review first provides an overview of evidence on the link between microbial dysbiosis and CRC carcinogenesis and describes the molecular events associated with that link. Thereafter, there is a summary of current data on the effect of rice bran intake on the composition of intestinal microbiota in human and animal models. The article also highlights the need for further studies on the inter-relationship between rice bran intake, the composition of intestinal microbiota and CRC prevention.
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1533
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Gorjifard S, Goldszmid RS. Microbiota-myeloid cell crosstalk beyond the gut. J Leukoc Biol 2016; 100:865-879. [PMID: 27605211 DOI: 10.1189/jlb.3ri0516-222r] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 07/11/2016] [Indexed: 02/06/2023] Open
Abstract
The gut microbiota is a complex and dynamic microbial ecosystem that plays a fundamental role in host physiology. Locally, the gut commensal microbes/host symbiotic relationship is vital for barrier fortification, nutrient absorption, resistance against intestinal pathogens, and the development and maintenance of the mucosal immune system. It is now clear that the effects of the indigenous intestinal flora extend beyond the gut, ranging from shaping systemic immune responses to metabolic and behavioral functions. However, the underlying mechanisms of the gut microbiota/systemic immune system interactions remain largely unknown. Myeloid cells respond to microbial signals, including those derived from commensals, and initiate innate and adaptive immune responses. In this review, we focus on the impact of the gut microbiota on myeloid cells at extraintestinal sites. In particular, we discuss how commensal-derived signals affect steady-state myelopoiesis and cellular function and how that influences the response to infection and cancer therapy.
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Affiliation(s)
- Sayeh Gorjifard
- Inflammatory Cell Dynamics Section, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Romina S Goldszmid
- Inflammatory Cell Dynamics Section, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
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1534
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Duranti S, Gaiani F, Mancabelli L, Milani C, Grandi A, Bolchi A, Santoni A, Lugli GA, Ferrario C, Mangifesta M, Viappiani A, Bertoni S, Vivo V, Serafini F, Barbaro MR, Fugazza A, Barbara G, Gioiosa L, Palanza P, Cantoni AM, de'Angelis GL, Barocelli E, de'Angelis N, van Sinderen D, Ventura M, Turroni F. Elucidating the gut microbiome of ulcerative colitis: bifidobacteria as novel microbial biomarkers. FEMS Microbiol Ecol 2016; 92:fiw191. [PMID: 27604252 DOI: 10.1093/femsec/fiw191] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/31/2016] [Indexed: 12/21/2022] Open
Abstract
Ulcerative colitis (UC) is associated with a substantial alteration of specific gut commensals, some of which may be involved in microbiota-mediated protection. In this study, microbiota cataloging of UC patients by 16S rRNA microbial profiling revealed a marked reduction of bifidobacteria, in particular the Bifidobacterium bifidum species, thus suggesting that this taxon plays a biological role in the aetiology of UC. We investigated this further through an in vivo trial by testing the effects of oral treatment with B. bifidum PRL2010 in a wild-type murine colitis model. TNBS-treated mice receiving 10(9) cells of B. bifidum PRL2010 showed a marked reduction of all colitis-associated histological indices as well as maintenance of mucosal integrity as it was shown by the increase in the expression of many tight junction-encoding genes. The protective role of B. bifidum PRL2010, as well as its sortase-dependent pili, appears to be established through the induction of an innate immune response of the host. These results highlight the importance of B. bifidum as a microbial biomarker for UC, revealing its role in protection against experimentally induced colitis.
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Affiliation(s)
- Sabrina Duranti
- Laboratory of Probiogenomics, Department of Life Sciences, University of Parma, Parco Area delle Scienze 11A, 43124 Parma, Italy
| | - Federica Gaiani
- Gastroenterology Unit, University Hospital of Parma, Via Gramsci 14, 43126 Parma, Italy
| | - Leonardo Mancabelli
- Laboratory of Probiogenomics, Department of Life Sciences, University of Parma, Parco Area delle Scienze 11A, 43124 Parma, Italy
| | - Christian Milani
- Laboratory of Probiogenomics, Department of Life Sciences, University of Parma, Parco Area delle Scienze 11A, 43124 Parma, Italy
| | - Andrea Grandi
- Department of Pharmacy, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - Angelo Bolchi
- Laboratory of Molecular Biology, Department of Life Sciences, University of Parma, Parco Area delle Scienze 11/A, 43124 Parma, Italy
| | - Andrea Santoni
- Laboratory of Molecular Biology, Department of Life Sciences, University of Parma, Parco Area delle Scienze 11/A, 43124 Parma, Italy
| | - Gabriele Andrea Lugli
- Laboratory of Probiogenomics, Department of Life Sciences, University of Parma, Parco Area delle Scienze 11A, 43124 Parma, Italy
| | - Chiara Ferrario
- Laboratory of Probiogenomics, Department of Life Sciences, University of Parma, Parco Area delle Scienze 11A, 43124 Parma, Italy
| | | | - Alice Viappiani
- GenProbio srl, Parco Area delle Scienze 11A, 43124 Parma, Italy
| | - Simona Bertoni
- Department of Pharmacy, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - Valentina Vivo
- Department of Pharmacy, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - Fausta Serafini
- Laboratory of Probiogenomics, Department of Life Sciences, University of Parma, Parco Area delle Scienze 11A, 43124 Parma, Italy
| | - Maria Raffaella Barbaro
- Department of Medical and Surgical Sciences and Center for Applied Biomedical Research (CRBA), University of Bologna, Via Massarenti 9, Bologna 40138, Italy
| | - Alessandro Fugazza
- Gastroenterology Unit, University Hospital of Parma, Via Gramsci 14, 43126 Parma, Italy
| | - Giovanni Barbara
- Department of Medical and Surgical Sciences and Center for Applied Biomedical Research (CRBA), University of Bologna, Via Massarenti 9, Bologna 40138, Italy
| | - Laura Gioiosa
- Department of Neurosciences, University of Parma, 43124 Parma, Italy
| | - Paola Palanza
- Department of Neurosciences, University of Parma, 43124 Parma, Italy
| | - Anna Maria Cantoni
- Department of Veterinary Science, University of Parma, Via del Taglio 10, 43126 Parma, Italy
| | - Gian Luigi de'Angelis
- Gastroenterology Unit, University Hospital of Parma, Via Gramsci 14, 43126 Parma, Italy
| | - Elisabetta Barocelli
- Department of Pharmacy, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - Nicola de'Angelis
- Unit of Digestive, Hepato-Pancreato-Biliary Surgery and Liver Transplantation, Henri Mondor Hospital, 51 Avenue du Maréchal de Lattre de Tassigny, Créteil 94010, France
| | - Douwe van Sinderen
- APC Microbiome Institute and School of Microbiology, National University of Ireland, Cork, Ireland
| | - Marco Ventura
- Laboratory of Probiogenomics, Department of Life Sciences, University of Parma, Parco Area delle Scienze 11A, 43124 Parma, Italy
| | - Francesca Turroni
- Laboratory of Probiogenomics, Department of Life Sciences, University of Parma, Parco Area delle Scienze 11A, 43124 Parma, Italy
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1535
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Montrose DC, Zhou XK, McNally EM, Sue E, Yantiss RK, Gross SS, Leve ND, Karoly ED, Suen CS, Ling L, Benezra R, Pamer EG, Dannenberg AJ. Celecoxib Alters the Intestinal Microbiota and Metabolome in Association with Reducing Polyp Burden. Cancer Prev Res (Phila) 2016; 9:721-31. [PMID: 27432344 PMCID: PMC5010963 DOI: 10.1158/1940-6207.capr-16-0095] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 07/12/2016] [Indexed: 12/14/2022]
Abstract
Treatment with celecoxib, a selective COX-2 inhibitor, reduces formation of premalignant adenomatous polyps in the gastrointestinal tracts of humans and mice. In addition to its chemopreventive activity, celecoxib can exhibit antimicrobial activity. Differing bacterial profiles have been found in feces from colon cancer patients compared with those of normal subjects. Moreover, preclinical studies suggest that bacteria can modulate intestinal tumorigenesis by secreting specific metabolites. In the current study, we determined whether celecoxib treatment altered the luminal microbiota and metabolome in association with reducing intestinal polyp burden in mice. Administration of celecoxib for 10 weeks markedly reduced intestinal polyp burden in APC(Min/+) mice. Treatment with celecoxib also altered select luminal bacterial populations in both APC(Min/+) and wild-type mice, including decreased Lactobacillaceae and Bifidobacteriaceae as well as increased Coriobacteriaceae Metabolomic analysis demonstrated that celecoxib caused a strong reduction in many fecal metabolites linked to carcinogenesis, including glucose, amino acids, nucleotides, and lipids. Ingenuity Pathway Analysis suggested that these changes in metabolites may contribute to reduced cell proliferation. To this end, we showed that celecoxib reduced cell proliferation in the base of normal appearing ileal and colonic crypts of APC(Min/+) mice. Consistent with this finding, lineage tracing indicated that celecoxib treatment reduced the rate at which Lgr5-positive stem cells gave rise to differentiated cell types in the crypts. Taken together, these results demonstrate that celecoxib alters the luminal microbiota and metabolome along with reducing epithelial cell proliferation in mice. We hypothesize that these actions contribute to its chemopreventive activity. Cancer Prev Res; 9(9); 721-31. ©2016 AACR.
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Affiliation(s)
- David C Montrose
- Department of Medicine, Weill Cornell Medical College, New York, New York
| | - Xi Kathy Zhou
- Department of Healthcare Policy and Research, Weill Cornell Medical College, New York, New York
| | - Erin M McNally
- Department of Medicine, Weill Cornell Medical College, New York, New York
| | - Erika Sue
- Department of Medicine, Weill Cornell Medical College, New York, New York
| | - Rhonda K Yantiss
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, New York
| | - Steven S Gross
- Department of Pharmacology, Weill Cornell Medical College, New York, New York
| | - Nitai D Leve
- Department of Healthcare Policy and Research, Weill Cornell Medical College, New York, New York
| | | | - Chen S Suen
- Division of Cancer Prevention, National Cancer Institute, Rockville, Maryland
| | - Lilan Ling
- Lucille Castori Center for Microbes, Inflammation and Cancer, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Robert Benezra
- Cancer Biology and Genetics Program, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Eric G Pamer
- Lucille Castori Center for Microbes, Inflammation and Cancer, Memorial Sloan Kettering Cancer Center, New York, New York. Immunology Program, Memorial Sloan Kettering Cancer Center, New York, New York. Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
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1536
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Yu YN, Yu TC, Zhao HJ, Sun TT, Chen HM, Chen HY, An HF, Weng YR, Yu J, Li M, Qin WX, Ma X, Shen N, Hong J, Fang JY. Berberine may rescue Fusobacterium nucleatum-induced colorectal tumorigenesis by modulating the tumor microenvironment. Oncotarget 2016; 6:32013-26. [PMID: 26397137 PMCID: PMC4741656 DOI: 10.18632/oncotarget.5166] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 08/31/2015] [Indexed: 12/18/2022] Open
Abstract
Background Accumulating evidence links colorectal cancer (CRC) with the intestinal microbiota. However, the disturbance of intestinal microbiota and the role of Fusobacterium nucleatum during the colorectal adenoma-carcinoma sequence have not yet been evaluated. Methods 454 FLX pyrosequencing was used to evaluate the disturbance of intestinal microbiota during the adenoma-carcinoma sequence pathway of CRC. Intestinal microbiota and mucosa tumor-immune cytokines were detected in mice after introducing 1,2-dimethylhydrazine (DMH), F. nucleatum or Berberine (BBR), using pyrosequencing and Bio-Plex Pro™ cytokine assays, respectively. Protein expressions were detected by western blotting. Results The levels of opportunistic pathogens, such as Fusobacterium, Streptococcus and Enterococcus spp. gradually increased during the colorectal adenoma-carcinoma sequence in human fecal and mucosal samples. F. nucleatum treatment significantly altered lumen microbial structures, with increased Tenericutes and Verrucomicrobia (opportunistic pathogens) (P < 0.05 = in wild-type C57BL/6 and mice with DMH treatment). BBR intervention reversed the F. nucleatum-mediated increase in opportunistic pathogens, and the secretion of IL-21/22/31, CD40L and the expression of p-STAT3, p-STAT5 and p-ERK1/2 in mice, compared with mice fed with F. nucleatum alone. Conclusions F. nucleatum colonization in the intestine may prompt colorectal tumorigenesis. BBR could rescue F. nucleatum-induced colorectal tumorigenesis by modulating the tumor microenvironment and blocking the activation of tumorigenesis-related pathways.
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Affiliation(s)
- Ya-Nan Yu
- State Key Laboratory of Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Shanghai, China.,Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Ta-Chung Yu
- State Key Laboratory of Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Hui-Jun Zhao
- State Key Laboratory of Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Tian-Tian Sun
- State Key Laboratory of Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Hui-Min Chen
- State Key Laboratory of Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Hao-Yan Chen
- State Key Laboratory of Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Hui-Fang An
- Shanghai Majorbio Bio-pharm Biotechnology Co. Ltd., Shanghai, China
| | - Yu-Rong Weng
- State Key Laboratory of Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Jun Yu
- Department of Medicine & Therapeutics, State Key Laboratory of Digestive Disease, Institute of Digestive Disease and LKS Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Min Li
- Department of Clinical Laboratory, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Wen-Xin Qin
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
| | - Xiong Ma
- State Key Laboratory of Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Nan Shen
- Department of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jie Hong
- State Key Laboratory of Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Jing-Yuan Fang
- State Key Laboratory of Oncogenes and Related Genes, Division of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Shanghai, China
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1537
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Hettmann A, Demcsák A, Decsi G, Bach Á, Pálinkó D, Rovó L, Nagy K, Takács M, Minarovits J. Infectious Agents Associated with Head and Neck Carcinomas. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 897:63-80. [PMID: 26563307 DOI: 10.1007/5584_2015_5005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In addition to traditional risk factors such as smoking habits and alcohol consumption, certain microbes also play an important role in the generation of head and neck carcinomas. Infection with high-risk human papillomavirus types is strongly associated with the development of oropharyngeal carcinoma, and Epstein-Barr virus appears to be indispensable for the development of non-keratinizing squamous cell carcinoma of the nasopharynx. Other viruses including torque teno virus and hepatitis C virus may act as co-carcinogens, increasing the risk of malignant transformation. A shift in the composition of the oral microbiome was associated with the development of oral squamous cell carcinoma, although the causal or casual role of oral bacteria remains to be clarified. Conversion of ethanol to acetaldehyde, a mutagenic compound, by members of the oral microflora as well as by fungi including Candida albicans and others is a potential mechanism that may increase oral cancer risk. In addition, distinct Candida spp. also produce NBMA (N-nitrosobenzylmethylamine), a potent carcinogen. Inflammatory processes elicited by microbes may also facilitate tumorigenesis in the head and neck region.
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Affiliation(s)
- Andrea Hettmann
- Division of Virology, National Center for Epidemiology, Albert F. ut 2-6, H-1097, Budapest, Hungary
| | - Anett Demcsák
- Faculty of Dentistry, Department of Oral Biology and Experimental Dental Research, University of Szeged, Szeged, Hungary
| | - Gábor Decsi
- Department of Oral Surgery, University of Szeged, Tisza Lajos krt. 64, H-6720, Szeged, Hungary
| | - Ádám Bach
- Faculty of Medicine, Department of Oto-Rhino-Laryngology and Head-Neck Surgery, University of Szeged, Tisza L. krt. 111, H-6725, Szeged, Hungary
| | - Dóra Pálinkó
- Faculty of Medicine, Department of Oto-Rhino-Laryngology and Head-Neck Surgery, University of Szeged, Tisza L. krt. 111, H-6725, Szeged, Hungary
| | - László Rovó
- Faculty of Medicine, Department of Oto-Rhino-Laryngology and Head-Neck Surgery, University of Szeged, Tisza L. krt. 111, H-6725, Szeged, Hungary
| | - Katalin Nagy
- Department of Oral Surgery, University of Szeged, Tisza Lajos krt. 64, H-6720, Szeged, Hungary
| | - Mária Takács
- Division of Virology, National Center for Epidemiology, Albert F. ut 2-6, H-1097, Budapest, Hungary
| | - Janos Minarovits
- Faculty of Dentistry, Department of Oral Biology and Experimental Dental Research, University of Szeged, Szeged, Hungary.
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1538
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Prevention of Colitis and Colitis-Associated Colorectal Cancer by a Novel Polypharmacological Histone Deacetylase Inhibitor. Clin Cancer Res 2016; 22:4158-69. [DOI: 10.1158/1078-0432.ccr-15-2379] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Accepted: 04/11/2016] [Indexed: 11/16/2022]
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1539
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Abstract
Precision medicine relies on validated biomarkers with which to better classify patients by their probable disease risk, prognosis and/or response to treatment. Although affordable 'omics'-based technology has enabled faster identification of putative biomarkers, the validation of biomarkers is still stymied by low statistical power and poor reproducibility of results. This Review summarizes the successes and challenges of using different types of molecule as biomarkers, using lung cancer as a key illustrative example. Efforts at the national level of several countries to tie molecular measurement of samples to patient data via electronic medical records are the future of precision medicine research.
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Affiliation(s)
- Ashley J Vargas
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Room 3068A, MSC 425, 837 Convent Drive, Bethesda, Maryland 20892-4258, USA
- Division of Cancer Prevention, National Cancer Institute, Rockville, Maryland 20850, USA
| | - Curtis C Harris
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Room 3068A, MSC 425, 837 Convent Drive, Bethesda, Maryland 20892-4258, USA
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1540
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Kudo Y, Tada H, Fujiwara N, Tada Y, Tsunematsu T, Miyake Y, Ishimaru N. Oral environment and cancer. Genes Environ 2016; 38:13. [PMID: 27482300 PMCID: PMC4968003 DOI: 10.1186/s41021-016-0042-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 04/19/2016] [Indexed: 01/10/2023] Open
Abstract
Cancer is now the leading cause of death in Japan. A rapid increase in cancer mortality is expected as Japan is facing a super-aged society. Many causes of cancer are known to be closely linked to life style factors, such as smoking, drinking, and diet. The oral environment is known to be involved in the pathogenesis and development of various diseases such as bronchitis, pneumonia, diabetes, heart disease, and dementia. Because the oral cavity acts as the bodily entrance for air and food, it is constantly exposed to foreign substances, including bacteria and viruses. A large number of bacteria are endemic to the oral cavity, and indigenous oral flora act to prevent the settlement of foreign bacteria. The oral environment is influenced by local factors, including dental plaque, tartar, teeth alignment, occlusion, an incompatible prosthesis, and bad lifestyle habits, and systemic factors, including smoking, consumption of alcohol, irregular lifestyle and eating habits, obesity, stress, hormones, and heredity. It has recently been revealed that the oral environment is associated with cancer. In particular, commensal bacteria in the oral cavity are involved in the development of cancer. Moreover, Candida, human papilloma virus and Epstein-Barr virus as well as commensal bacteria have been reported to be associated with the pathogenesis of cancer. In this review, we introduce recent findings of the correlation between the oral environment and cancer.
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Affiliation(s)
- Yasusei Kudo
- Department of Oral Molecular Pathology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Hidesuke Tada
- Department of Oral Molecular Pathology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan ; Tada Dental Clinic, Kakogawa, Japan
| | - Natsumi Fujiwara
- Department of Oral Healthcare Promotion, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | | | - Takaaki Tsunematsu
- Department of Oral Molecular Pathology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Yoichiro Miyake
- Department of Oral Microbiology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Naozumi Ishimaru
- Department of Oral Molecular Pathology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
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1541
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Shaw KA, Bertha M, Hofmekler T, Chopra P, Vatanen T, Srivatsa A, Prince J, Kumar A, Sauer C, Zwick ME, Satten GA, Kostic AD, Mulle JG, Xavier RJ, Kugathasan S. Dysbiosis, inflammation, and response to treatment: a longitudinal study of pediatric subjects with newly diagnosed inflammatory bowel disease. Genome Med 2016; 8:75. [PMID: 27412252 PMCID: PMC4944441 DOI: 10.1186/s13073-016-0331-y] [Citation(s) in RCA: 190] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 07/01/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Gut microbiome dysbiosis has been demonstrated in subjects with newly diagnosed and chronic inflammatory bowel disease (IBD). In this study we sought to explore longitudinal changes in dysbiosis and ascertain associations between dysbiosis and markers of disease activity and treatment outcome. METHODS We performed a prospective cohort study of 19 treatment-naïve pediatric IBD subjects and 10 healthy controls, measuring fecal calprotectin and assessing the gut microbiome via repeated stool samples. Associations between clinical characteristics and the microbiome were tested using generalized estimating equations. Random forest classification was used to predict ultimate treatment response (presence of mucosal healing at follow-up colonoscopy) or non-response using patients' pretreatment samples. RESULTS Patients with Crohn's disease had increased markers of inflammation and dysbiosis compared to controls. Patients with ulcerative colitis had even higher inflammation and dysbiosis compared to those with Crohn's disease. For all cases, the gut microbial dysbiosis index associated significantly with clinical and biological measures of disease severity, but did not associate with treatment response. We found differences in specific gut microbiome genera between cases/controls and responders/non-responders including Akkermansia, Coprococcus, Fusobacterium, Veillonella, Faecalibacterium, and Adlercreutzia. Using pretreatment microbiome data in a weighted random forest classifier, we were able to obtain 76.5 % accuracy for prediction of responder status. CONCLUSIONS Patient dysbiosis improved over time but persisted even among those who responded to treatment and achieved mucosal healing. Although dysbiosis index was not significantly different between responders and non-responders, we found specific genus-level differences. We found that pretreatment microbiome signatures are a promising avenue for prediction of remission and response to treatment.
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Affiliation(s)
- Kelly A Shaw
- Graduate Program in Genetics and Molecular Biology, Graduate Division of Biological and Biomedical Sciences, Emory University, Atlanta, GA, 30322, USA
| | - Madeline Bertha
- Department of Pediatrics, Emory University School of Medicine & Children's Healthcare of Atlanta, 2015 Uppergate Drive, room 248, Atlanta, GA, 30322, USA
| | - Tatyana Hofmekler
- Department of Pediatrics, Emory University School of Medicine & Children's Healthcare of Atlanta, 2015 Uppergate Drive, room 248, Atlanta, GA, 30322, USA
| | - Pankaj Chopra
- Department of Pediatrics, Emory University School of Medicine & Children's Healthcare of Atlanta, 2015 Uppergate Drive, room 248, Atlanta, GA, 30322, USA
| | - Tommi Vatanen
- Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
- Department of Computer Science, Aalto University School of Science, 02150, Espoo, Finland
| | - Abhiram Srivatsa
- Department of Pediatrics, Emory University School of Medicine & Children's Healthcare of Atlanta, 2015 Uppergate Drive, room 248, Atlanta, GA, 30322, USA
| | - Jarod Prince
- Department of Pediatrics, Emory University School of Medicine & Children's Healthcare of Atlanta, 2015 Uppergate Drive, room 248, Atlanta, GA, 30322, USA
| | - Archana Kumar
- Department of Pediatrics, Emory University School of Medicine & Children's Healthcare of Atlanta, 2015 Uppergate Drive, room 248, Atlanta, GA, 30322, USA
| | - Cary Sauer
- Department of Pediatrics, Emory University School of Medicine & Children's Healthcare of Atlanta, 2015 Uppergate Drive, room 248, Atlanta, GA, 30322, USA
| | - Michael E Zwick
- Department of Human Genetics, Emory University, Atlanta, GA, 30322, USA
| | - Glen A Satten
- Centers for Disease Control and Prevention, Atlanta, GA, 30341, USA
| | - Aleksandar D Kostic
- Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
- Center for Computational and Integrative Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
| | - Jennifer G Mulle
- Department of Human Genetics, Emory University, Atlanta, GA, 30322, USA
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, 30322, USA
| | - Ramnik J Xavier
- Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
- Center for Computational and Integrative Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
| | - Subra Kugathasan
- Department of Pediatrics, Emory University School of Medicine & Children's Healthcare of Atlanta, 2015 Uppergate Drive, room 248, Atlanta, GA, 30322, USA.
- Department of Human Genetics, Emory University, Atlanta, GA, 30322, USA.
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1542
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Wang J, Jia H. Metagenome-wide association studies: fine-mining the microbiome. Nat Rev Microbiol 2016; 14:508-22. [PMID: 27396567 DOI: 10.1038/nrmicro.2016.83] [Citation(s) in RCA: 261] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Metagenome-wide association studies (MWAS) have enabled the high-resolution investigation of associations between the human microbiome and several complex diseases, including type 2 diabetes, obesity, liver cirrhosis, colorectal cancer and rheumatoid arthritis. The associations that can be identified by MWAS are not limited to the identification of taxa that are more or less abundant, as is the case with taxonomic approaches, but additionally include the identification of microbial functions that are enriched or depleted. In this Review, we summarize recent findings from MWAS and discuss how these findings might inform the prevention, diagnosis and treatment of human disease in the future. Furthermore, we highlight the need to better characterize the biology of many of the bacteria that are found in the human microbiota as an essential step in understanding how bacterial strains that have been identified by MWAS are associated with disease.
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Affiliation(s)
- Jun Wang
- iCarbonX, Shahe Industrial Zone, No.4018 Qiaoxiang Road, Nanshan District, Shenzhen 518083, China.,Shenzhen Key Laboratory of Human Commensal Microorganisms and Health Research, BGI-Shenzhen, Shenzhen 518083, China
| | - Huijue Jia
- Shenzhen Key Laboratory of Human Commensal Microorganisms and Health Research, BGI-Shenzhen, Shenzhen 518083, China
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1543
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Ray D, Kidane D. Gut Microbiota Imbalance and Base Excision Repair Dynamics in Colon Cancer. J Cancer 2016; 7:1421-30. [PMID: 27471558 PMCID: PMC4964126 DOI: 10.7150/jca.15480] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 05/18/2016] [Indexed: 12/15/2022] Open
Abstract
Gut microbiota are required for host nutrition, energy balance, and regulating immune homeostasis, however, in some cases, this mutually beneficial relationship becomes twisted (dysbiosis), and the gut flora can incite pathological disorders including colon cancer. Microbial dysbiosis promotes the release of bacterial genotoxins, metabolites, and causes chronic inflammation, which promote oxidative DNA damage. Oxidized DNA base lesions are removed by base excision repair (BER), however, the role of this altered function of BER, as well as microbiota-mediated genomic instability and colon cancer development, is still poorly understood. In this review article, we will discuss how dysbiotic microbiota induce DNA damage, its impact on base excision repair capacity, the potential link of host BER gene polymorphism, and the risk of dysbiotic microbiota mediated genomic instability and colon cancer.
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Affiliation(s)
- Debolina Ray
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Dell Pediatric Research Institute, 1400 Barbara Jordan Blvd. R1800, Austin, TX 78723, United States
| | - Dawit Kidane
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Dell Pediatric Research Institute, 1400 Barbara Jordan Blvd. R1800, Austin, TX 78723, United States
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1544
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Russo E, Taddei A, Ringressi MN, Ricci F, Amedei A. The interplay between the microbiome and the adaptive immune response in cancer development. Therap Adv Gastroenterol 2016; 9:594-605. [PMID: 27366226 PMCID: PMC4913328 DOI: 10.1177/1756283x16635082] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The data from different studies suggest a bacterial role in cancer genesis/progression, often modulating the local immune response. This is particularly so at the mucosal level where the bacterial presence is strong and the immune system is highly reactive. The epithelial surfaces of the body, such as the skin and mucosa, are colonized by a vast number of microorganisms, which represent the so-called normal microbiome. Normally the microbiome does not cause a proinflammatory response because the immune system has developed different strategies for the tolerance of commensal bacteria, but when these mechanisms are impaired or new pathogenic bacteria are introduced into this balanced system, the immune system reacts to the microbiome and can trigger tumor growth in the intestine. In this review, we discuss the potential role of the bacterial microbiome in carcinogenesis, focusing on the direct and indirect immune adaptive mechanisms, that the bacteria can modulate in different ways.
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Affiliation(s)
- Edda Russo
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Antonio Taddei
- Department of Surgery and Translational Medicine (DCMT), University of Florence, Florence, Italy
| | - Maria Novella Ringressi
- Department of Surgery and Translational Medicine (DCMT), University of Florence, Florence, Italy
| | - Federica Ricci
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine – Section of Internal Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy
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1545
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Sivaprakasam S, Gurav A, Paschall AV, Coe GL, Chaudhary K, Cai Y, Kolhe R, Martin P, Browning D, Huang L, Shi H, Sifuentes H, Vijay-Kumar M, Thompson SA, Munn DH, Mellor A, McGaha TL, Shiao P, Cutler CW, Liu K, Ganapathy V, Li H, Singh N. An essential role of Ffar2 (Gpr43) in dietary fibre-mediated promotion of healthy composition of gut microbiota and suppression of intestinal carcinogenesis. Oncogenesis 2016; 5:e238. [PMID: 27348268 PMCID: PMC4945739 DOI: 10.1038/oncsis.2016.38] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 04/12/2016] [Accepted: 04/18/2016] [Indexed: 12/19/2022] Open
Abstract
Composition of the gut microbiota has profound effects on intestinal carcinogenesis. Diet and host genetics play critical roles in shaping the composition of gut microbiota. Whether diet and host genes interact with each other to bring specific changes in gut microbiota that affect intestinal carcinogenesis is unknown. Ability of dietary fibre to specifically increase beneficial gut microbiota at the expense of pathogenic bacteria in vivo via unknown mechanism is an important process that suppresses intestinal inflammation and carcinogenesis. Free fatty acid receptor 2 (FFAR2 or GPR43) is a receptor for short-chain fatty acids (acetate, propionate and butyrate), metabolites of dietary fibre fermentation by gut microbiota. Here, we show FFAR2 is down modulated in human colon cancers than matched adjacent healthy tissue. Consistent with this, Ffar2(-/-) mice are hypersusceptible to development of intestinal carcinogenesis. Dietary fibre suppressed colon carcinogenesis in an Ffar2-dependent manner. Ffar2 played an essential role in dietary fibre-mediated promotion of beneficial gut microbiota, Bifidobacterium species (spp) and suppression of Helicobacter hepaticus and Prevotellaceae. Moreover, numbers of Bifidobacterium is reduced, whereas those of Prevotellaceae are increased in human colon cancers than matched adjacent normal tissue. Administration of Bifidobacterium mitigated intestinal inflammation and carcinogenesis in Ffar2(-/-) mice. Taken together, these findings suggest that interplay between dietary fibre and Ffar2 play a key role in promoting healthy composition of gut microbiota that stimulates intestinal health.
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Affiliation(s)
- S Sivaprakasam
- Department of Biochemistry and Molecular Biology, Georgia Regents University, Augusta, GA, USA
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences, Lubbock, TX, USA
| | - A Gurav
- Department of Biochemistry and Molecular Biology, Georgia Regents University, Augusta, GA, USA
| | - A V Paschall
- Department of Biochemistry and Molecular Biology, Georgia Regents University, Augusta, GA, USA
| | - G L Coe
- Department of Biochemistry and Molecular Biology, Georgia Regents University, Augusta, GA, USA
| | - K Chaudhary
- Cancer Research Center, Georgia Regents University, Augusta, GA, USA
| | - Y Cai
- Department of Biochemistry and Molecular Biology, Georgia Regents University, Augusta, GA, USA
| | - R Kolhe
- Department of Pathology, Georgia Regents University, Augusta, GA, USA
| | - P Martin
- Department of Biochemistry and Molecular Biology, Georgia Regents University, Augusta, GA, USA
| | - D Browning
- Department of Biochemistry and Molecular Biology, Georgia Regents University, Augusta, GA, USA
| | - L Huang
- Cancer Research Center, Georgia Regents University, Augusta, GA, USA
| | - H Shi
- Department of Biochemistry and Molecular Biology, Georgia Regents University, Augusta, GA, USA
- Cancer Research Center, Georgia Regents University, Augusta, GA, USA
| | - H Sifuentes
- Department of Medicine, Georgia Regents University, Augusta, GA, USA
| | - M Vijay-Kumar
- Departments of Nutritional Sciences & Medicine, Pennsylvania State University, Medical Center, Hershey, PA, USA
| | - S A Thompson
- Department of Medicine, Georgia Regents University, Augusta, GA, USA
| | - D H Munn
- Cancer Research Center, Georgia Regents University, Augusta, GA, USA
- Department of Pediatrics, Georgia Regents University, Augusta, GA, USA
| | - A Mellor
- Institute of Cellular Medicine, Newcastle University, Newcastle-upon-Tyne, UK
| | - T L McGaha
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - P Shiao
- College of Nursing, Georgia Regents University, Augusta, GA, USA
| | - C W Cutler
- Department of Periodontics, Georgia Regents University, Augusta, GA, USA
| | - K Liu
- Department of Biochemistry and Molecular Biology, Georgia Regents University, Augusta, GA, USA
| | - V Ganapathy
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences, Lubbock, TX, USA
| | - H Li
- Department of Biochemistry and Molecular Biology, Georgia Regents University, Augusta, GA, USA
| | - N Singh
- Department of Biochemistry and Molecular Biology, Georgia Regents University, Augusta, GA, USA
- Cancer Research Center, Georgia Regents University, Augusta, GA, USA
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1546
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Huang S, Yang Z, Zou D, Dong D, Liu A, Liu W, Huang L. Rapid detection of nusG and fadA in Fusobacterium nucleatum by loop-mediated isothermal amplification. J Med Microbiol 2016; 65:760-769. [PMID: 27339262 DOI: 10.1099/jmm.0.000300] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Fusobacterium nucleatum is associated with various human diseases such as periodontal disease and colorectal cancer (CRC); thus, F. nucleatum detection might serve as a novel diagnostic tool. Here, we describe the development of a sensitive and rapid molecular method for detecting two F. nucleatum genes: the highly conserved nusG and fadA, which encode a critical host colonization factor. Loop-mediated isothermal amplification (LAMP) primer sets for the rapid detection of nusG and fadA were designed and optimized. The nusG primers yielded consistent negative results for 20 non-F. nucleatum bacterial strains, confirming the high specificity of the primers. LAMP reaction primer sensitivity was determined, and its detection rate in comparison to conventional PCR was assessed using 57 clinical stool samples. The LAMP detection limit for nusG and fadA was 22.5 and 0.225 pg µl-1, respectively, indicating that the sensitivity of this method was 10-fold higher than that of conventional PCR. These results suggest that the LAMP technique is able to effectively identify F. nucleatum via nusG as well as detect its virulence factor. To the best of our knowledge, this study is the first to report the application of LAMP for the detection of nusG and fadA in F. nucleatum. The LAMP method constitutes a sensitive and specific visual assay for the rapid detection of the pathogen F. nucleatum.
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Affiliation(s)
- Simo Huang
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, P. R. China
| | - Zhan Yang
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, P. R. China
| | - Dayang Zou
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, P. R. China
| | - Derong Dong
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, P. R. China
| | - Anheng Liu
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, P. R. China
| | - Wei Liu
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, P. R. China
| | - Liuyu Huang
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, P. R. China
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1547
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Chan AA, Bashir M, Rivas MN, Duvall K, Sieling PA, Pieber TR, Vaishampayan PA, Love SM, Lee DJ. Characterization of the microbiome of nipple aspirate fluid of breast cancer survivors. Sci Rep 2016; 6:28061. [PMID: 27324944 PMCID: PMC4914981 DOI: 10.1038/srep28061] [Citation(s) in RCA: 137] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 05/31/2016] [Indexed: 12/31/2022] Open
Abstract
The microbiome impacts human health and disease. Until recently, human breast tissue and milk were presumed to be sterile. Here, we investigated the presence of microbes in the nipple aspirate fluid (NAF) and their potential association with breast cancer. We compared the NAF microbiome between women with a history of breast cancer (BC) and healthy control women (HC) using 16S rRNA gene amplicon sequencing. The NAF microbiome from BC and HC showed significant differences in community composition. Two Operational Taxonomic Units (OTUs) showed differences in relative abundances between NAF collected from BC and HC. In NAF collected from BC, there was relatively higher incidence of the genus Alistipes. By contrast, an unclassified genus from the Sphingomonadaceae family was relatively more abundant in NAF from HC. These findings reflect the ductal source DNA since there were no differences between areolar skin samples collected from BC and HC. Furthermore, the microbes associated with BC share an enzymatic activity, Beta-Glucuronidase, which may promote breast cancer. This is the first report of bacterial DNA in human breast ductal fluid and the differences between NAF from HC and BC. Further investigation of the ductal microbiome and its potential role in breast cancer are warranted.
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Affiliation(s)
- Alfred A Chan
- Dirks/Dougherty Laboratory for Cancer Research, Department of Translational Immunology, John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA, USA
| | - Mina Bashir
- Biotechnology and Planetary Protection Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.,Division of Endocrinology and Metabolism, Medical University of Graz, Graz, Austria
| | - Magali N Rivas
- Dirks/Dougherty Laboratory for Cancer Research, Department of Translational Immunology, John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA, USA
| | - Karen Duvall
- Breast Center at the University of California Los Angeles (UCLA), Westwood, Los Angeles, CA, USA.,Dr. Susan Love Research Foundation, Encino, CA, USA
| | - Peter A Sieling
- Dirks/Dougherty Laboratory for Cancer Research, Department of Translational Immunology, John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA, USA
| | - Thomas R Pieber
- Division of Endocrinology and Metabolism, Medical University of Graz, Graz, Austria
| | - Parag A Vaishampayan
- Biotechnology and Planetary Protection Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - Susan M Love
- Dr. Susan Love Research Foundation, Encino, CA, USA
| | - Delphine J Lee
- Dirks/Dougherty Laboratory for Cancer Research, Department of Translational Immunology, John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA, USA
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1548
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Krezalek MA, Skowron KB, Guyton KL, Shakhsheer B, Hyoju S, Alverdy JC. The intestinal microbiome and surgical disease. Curr Probl Surg 2016; 53:257-93. [PMID: 27497246 DOI: 10.1067/j.cpsurg.2016.06.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 06/07/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Monika A Krezalek
- Department of Surgery, Center for Surgical Infection Research and Therapeutics, Pritzker School of Medicine, University of Chicago, Chicago, IL
| | - Kinga B Skowron
- Department of Surgery, Center for Surgical Infection Research and Therapeutics, Pritzker School of Medicine, University of Chicago, Chicago, IL
| | - Kristina L Guyton
- Department of Surgery, Center for Surgical Infection Research and Therapeutics, Pritzker School of Medicine, University of Chicago, Chicago, IL
| | - Baddr Shakhsheer
- Department of Surgery, Center for Surgical Infection Research and Therapeutics, Pritzker School of Medicine, University of Chicago, Chicago, IL
| | - Sanjiv Hyoju
- Department of Surgery, Center for Surgical Infection Research and Therapeutics, Pritzker School of Medicine, University of Chicago, Chicago, IL
| | - John C Alverdy
- Department of Surgery, Center for Surgical Infection Research and Therapeutics, Pritzker School of Medicine, University of Chicago, Chicago, IL.
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1549
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Zhou XY, Li M, Li X, Long X, Zuo XL, Hou XH, Cong YZ, Li YQ. Visceral hypersensitive rats share common dysbiosis features with irritable bowel syndrome patients. World J Gastroenterol 2016; 22:5211-5227. [PMID: 27298564 PMCID: PMC4893468 DOI: 10.3748/wjg.v22.i22.5211] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/01/2016] [Accepted: 03/18/2016] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate gut microbial dysbiosis in two visceral hypersensitive models in comparison with irritable bowel syndrome (IBS) patients and to explore the extent to which these models capture the dysbiosis of IBS patients.
METHODS: Visceral hypersensitivity was developed using the maternal separation (MS) rat model and post-inflammatory rat model. The visceral sensitivity of the model groups and control group was evaluated using the abdominal withdraw reflex score and electromyography in response to graded colorectal distention. The 16S ribosomal RNA gene from fecal samples was pyrosequenced and analyzed. The correlation between dysbiosis in the microbiota and visceral hypersensitivity was calculated. Positive findings were compared to sequencing data from a published human IBS cohort.
RESULTS: Dysbiosis triggered by neonatal maternal separation was lasting but not static. Both MS and post-inflammatory rat fecal microbiota deviated from that of the control rats to an extent that was larger than the co-housing effect. Two short chain fatty acid producing genera, Fusobacterium and Clostridium XI, were shared by the human IBS cohort and by the maternal separation rats and post-inflammatory rats, respectively, to different extents. Fusobacterium was significantly increased in the MS group, and its abundance positively correlated with the degree of visceral hypersensitivity. Porphyromonadaceae was a protective biomarker for both the rat control group and healthy human controls.
CONCLUSION: The dysbiosis MS rat model and the post-inflammatory rat model captured some of the dysbiosis features of IBS patients. Fusobacterium, Clostridium XI and Porphyromonadaceae were identified as targets for future mechanistic research.
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1550
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Ren HG, Luu HN, Cai H, Xiang YB, Steinwandel M, Gao YT, Hargreaves M, Zheng W, Blot WJ, Long JR, Shu XO. Oral health and risk of colorectal cancer: results from three cohort studies and a meta-analysis. Ann Oncol 2016; 27:1329-36. [PMID: 27217540 DOI: 10.1093/annonc/mdw172] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 03/31/2016] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND While studies have shown that poor oral health status may increase the risk of cancer, evidence of a specific association with the risk of colorectal cancer (CRC) is inconclusive. We evaluated the association between oral health and CRC risk using data from three large cohorts: the Shanghai Men's Health Study (SMHS), the Shanghai Women's Health Study (SWHS), and the Southern Community Cohort Study (SCCS), and carried out a meta-analysis of results from other relevant published studies. PATIENTS AND METHODS This study applied a nested case-control study design and included 825 cases/3298 controls from the SMHS/SWHS and 238 cases/2258 controls from the SCCS. The association between oral health status (i.e. tooth loss/tooth decay) and CRC risk was assessed using conditional logistic regression models. A meta-analysis was carried out based on results from the present study and three published studies. RESULTS We found that tooth loss was not associated with increased risk of CRC. ORs and respective 95% CIs associated with loss of 1-5, 6-10, and >10 teeth compared with those with full teeth are 0.87 (0.69-1.10), 0.93 (0.70-1.24), and 0.85 (0.66-1.11) among SMHS/SWHS participants; and 1.13 (0.72-1.79), 0.87 (0.52-1.43), and 1.00 (0.63-1.58) for those with loss of 1-4, 5-10, and >10 teeth among SCCS participants. Data regarding tooth decay were available in the SCCS, but were not associated with CRC risk. Meta-analysis confirmed the null association between tooth loss/periodontal disease and CRC risk (OR 1.05, 95% CI 0.86-1.29). CONCLUSION In this analysis of three cohorts and a meta-analysis, we found no evidence supporting an association between oral health and CRC risk.
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Affiliation(s)
- H G Ren
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, USA Institution of Hematology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - H N Luu
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, USA Department of Epidemiology and Biostatistics, College of Public Health, University of South Florida, Tampa, USA
| | - H Cai
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, USA
| | - Y B Xiang
- Department of Epidemiology, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong, University School of Medicine, Shanghai, China
| | | | - Y T Gao
- Department of Epidemiology, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong, University School of Medicine, Shanghai, China
| | - M Hargreaves
- Department of Internal Medicine, Meharry Medical College, Nashville, USA
| | - W Zheng
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, USA
| | - W J Blot
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, USA International Epidemiology Institute, Rockville
| | - J R Long
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, USA
| | - X O Shu
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, USA
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