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Bruggeling CE, te Groen M, Garza DR, van Heeckeren tot Overlaer F, Krekels JPM, Sulaiman BC, Karel D, Rulof A, Schaaphok AR, Hornikx DLAH, Nagtegaal ID, Dutilh BE, Hoentjen F, Boleij A. Bacterial Oncotraits Rather than Spatial Organization Are Associated with Dysplasia in Ulcerative Colitis. J Crohns Colitis 2023; 17:1870-1881. [PMID: 37243505 PMCID: PMC10673813 DOI: 10.1093/ecco-jcc/jjad092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 04/24/2023] [Accepted: 05/25/2023] [Indexed: 05/29/2023]
Abstract
BACKGROUND AND AIMS Colonic bacterial biofilms are frequently present in ulcerative colitis [UC] and may increase dysplasia risk through pathogens expressing oncotraits. This prospective cohort study aimed to determine [1] the association of oncotraits and longitudinal biofilm presence with dysplasia risk in UC, and [2] the relation of bacterial composition with biofilms and dysplasia risk. METHODS Faeces and left- and right-sided colonic biopsies were collected from 80 UC patients and 35 controls. Oncotraits [FadA of Fusobacterium, BFT of Bacteroides fragilis, colibactin [ClbB] and Intimin [Eae] of Escherichia coli] were assessed in faecal DNA with multiplex quantitative polymerase chain reaction [qPCR]. Biopsies were screened for biofilms [n = 873] with 16S rRNA fluorescent in situ hybridiation. Shotgun metagenomic sequencing [n = 265], and ki67-immunohistochemistry were performed. Associations were determined with a mixed-effects regression model. RESULTS Biofilms were highly prevalent in UC patients [90.8%] with a median persistence of 3 years (interquartile range [IQR] 2-5 years). Biofilm-positive biopsies showed increased epithelial hypertrophy [p = 0.025] and a reduced Shannon diversity independent of disease status [p = 0.015], but were not significantly associated with dysplasia in UC: adjusted odds ratio [aOR] 1.45, 95% confidence interval [CI] 0.63-3.40. In contrast, ClbB independently associated with dysplasia [aOR 7.16, 95% CI 1.75-29.28], and FadA and Fusobacteriales were associated with a decreased dysplasia risk in UC [aOR 0.23, 95% CI 0.06-0.83, p <0.01]. CONCLUSIONS Biofilms are a hallmark of UC; however, because of their high prevalence are a poor biomarker for dysplasia. In contrast, colibactin presence and FadA absence independently associate with dysplasia in UC and might therefore be valuable biomarkers for future risk stratification and intervention strategies.
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Affiliation(s)
- Carlijn E Bruggeling
- Department of Pathology, Radboud Institute for Molecular Life Sciences [RIMLS], Radboud University Medical Center, Nijmegen, The Netherlands
| | - Maarten te Groen
- Inflammatory Bowel Disease Center, Department of Gastroenterology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Daniel R Garza
- Center for Molecular and Biomolecular Informatics [CMBI], Radboud Institute for Molecular Life Sciences [RIMLS], Nijmegen, The Netherlands
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Molecular Bacteriology, Leuven, Belgium
| | - Famke van Heeckeren tot Overlaer
- Department of Pathology, Radboud Institute for Molecular Life Sciences [RIMLS], Radboud University Medical Center, Nijmegen, The Netherlands
| | - Joyce P M Krekels
- Department of Pathology, Radboud Institute for Molecular Life Sciences [RIMLS], Radboud University Medical Center, Nijmegen, The Netherlands
| | - Basma-Chick Sulaiman
- Department of Pathology, Radboud Institute for Molecular Life Sciences [RIMLS], Radboud University Medical Center, Nijmegen, The Netherlands
| | - Davy Karel
- Department of Pathology, Radboud Institute for Molecular Life Sciences [RIMLS], Radboud University Medical Center, Nijmegen, The Netherlands
| | - Athreyu Rulof
- Department of Pathology, Radboud Institute for Molecular Life Sciences [RIMLS], Radboud University Medical Center, Nijmegen, The Netherlands
| | - Anne R Schaaphok
- Department of Pathology, Radboud Institute for Molecular Life Sciences [RIMLS], Radboud University Medical Center, Nijmegen, The Netherlands
| | - Daniel L A H Hornikx
- Department of Pathology, Radboud Institute for Molecular Life Sciences [RIMLS], Radboud University Medical Center, Nijmegen, The Netherlands
| | - Iris D Nagtegaal
- Department of Pathology, Radboud Institute for Molecular Life Sciences [RIMLS], Radboud University Medical Center, Nijmegen, The Netherlands
| | - Bas E Dutilh
- Center for Molecular and Biomolecular Informatics [CMBI], Radboud Institute for Molecular Life Sciences [RIMLS], Nijmegen, The Netherlands
- Institute of Biodiversity, Faculty of Biological Sciences, Cluster of Excellence Balance of the Microverse, Friedrich Schiller University Jena, Jena, Germany
- Theoretical Biology and Bioinformatics, Science for Life, Utrecht University, Utrecht, The Netherlands
| | - Frank Hoentjen
- Inflammatory Bowel Disease Center, Department of Gastroenterology, Radboud University Medical Center, Nijmegen, The Netherlands
- Division of Gastroenterology, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Annemarie Boleij
- Department of Pathology, Radboud Institute for Molecular Life Sciences [RIMLS], Radboud University Medical Center, Nijmegen, The Netherlands
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Kok DE, Kers JG, Boshuizen HC, Klaassen N, van Halteren HK, Kruyt FM, Smidt ML, De Wilt JH, Boleij A, Kampman E, Zoetendal EG. Abstract 4380: Pre- and postoperative fecal microbiota and its association with complications after surgery in colon cancer patients. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-4380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
Introduction: Postoperative complications impact morbidity and mortality of colon cancer patients. Emerging evidence suggests that intestinal microbiota might play a critical role in the development of postoperative complications after gastrointestinal surgery. Here, we studied changes in fecal microbiota composition comparing samples collected before and after colon cancer surgery. Moreover, we examined whether the microbiota composition before surgery was associated with postoperative complications, and we explored potential determinants of the preoperative microbiota in colon cancer patients.
Methods: For this study, two fecal samples were provided by 78 patients with colon cancer. The first (preoperative) sample was collected shortly after diagnosis and before (median and interquartile (IQR) range of 4 (2-6) days) colon cancer surgery. The second (postoperative) sample was collected approximately 6 weeks (median and IQR of 42 (37-47) days) after surgery and before start of adjuvant chemotherapy (whenever applicable). Based on 16S ribosomal RNA gene amplicon sequencing, the fecal microbiota diversity and composition were determined. Preoperative microbiota composition of patients who developed postoperative complications in the 30 days following surgery (n=18, 23%) was compared to those who did not (n=60, 77%) using univariate and multivariate analyses. Explorative random forest analyses were conducted to identify predictors of complication status, with relative abundance of the core genera, sex, age, fecal calprotectin levels, dietary fiber intake, body mass index, smoking status, ASA classification, cancer stage and tumor location being considered as potential predictors.
Results: After surgery, microbial alpha diversity was reduced compared to the preoperative situation, whereas compositional changes over time only reached statistical significance for Lachnospiraceae NK4A136 and Coprococcus 1, which both decreased in relative abundance after surgery. Already before the start of surgery, relative abundance of the genera Bacteroides (10% vs 6%) and Lachnoclostridium (0.6% vs 0.2%) appeared to be higher in patients with complications versus those with uncomplicated recovery. In a prediction analysis, current smoking and relative abundance of Lachnoclostridium were identified as most profound predictors of complication status. Fecal calprotectin levels and current smoking status explained most (together 6%) of the overall variation in microbiota composition before surgery.
Conclusion: In this study, higher relative abundances of the genera Bacteroides and Lachnoclostridium before surgery were associated with postoperative complications in patients with colon cancer. Future studies should expand on the potential causal and pathogenic routes underlying these observations.
Citation Format: Dieuwertje E. Kok, Jannigje G. Kers, Hendriek C. Boshuizen, Niels Klaassen, Henk K. van Halteren, Flip M. Kruyt, Marjolein L. Smidt, Johannes H. De Wilt, Annemarie Boleij, Ellen Kampman, Erwin G. Zoetendal. Pre- and postoperative fecal microbiota and its association with complications after surgery in colon cancer patients. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 4380.
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Affiliation(s)
| | | | | | - Niels Klaassen
- 1Wageningen University & Research, Wageningen, Netherlands
| | | | | | - Marjolein L. Smidt
- 4Maastricht University Medical Center & GROW School for Oncology, Maastricht, Netherlands
| | | | | | - Ellen Kampman
- 1Wageningen University & Research, Wageningen, Netherlands
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Garza DR, von Meijenfeldt FAB, van Dijk B, Boleij A, Huynen MA, Dutilh BE. Nutrition or nature: using elementary flux modes to disentangle the complex forces shaping prokaryote pan-genomes. BMC Ecol Evol 2022; 22:101. [PMID: 35974327 PMCID: PMC9382767 DOI: 10.1186/s12862-022-02052-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 07/22/2022] [Indexed: 11/15/2022] Open
Abstract
Background Microbial pan-genomes are shaped by a complex combination of stochastic and deterministic forces. Even closely related genomes exhibit extensive variation in their gene content. Understanding what drives this variation requires exploring the interactions of gene products with each other and with the organism’s external environment. However, to date, conceptual models of pan-genome dynamics often represent genes as independent units and provide limited information about their mechanistic interactions. Results We simulated the stochastic process of gene-loss using the pooled genome-scale metabolic reaction networks of 46 taxonomically diverse bacterial and archaeal families as proxies for their pan-genomes. The frequency by which reactions are retained in functional networks when stochastic gene loss is simulated in diverse environments allowed us to disentangle the metabolic reactions whose presence depends on the metabolite composition of the external environment (constrained by “nutrition”) from those that are independent of the environment (constrained by “nature”). By comparing the frequency of reactions from the first group with their observed frequencies in bacterial and archaeal families, we predicted the metabolic niches that shaped the genomic composition of these lineages. Moreover, we found that the lineages that were shaped by a more diverse metabolic niche also occur in more diverse biomes as assessed by global environmental sequencing datasets. Conclusion We introduce a computational framework for analyzing and interpreting pan-reactomes that provides novel insights into the ecological and evolutionary drivers of pan-genome dynamics. Supplementary Information The online version contains supplementary material available at 10.1186/s12862-022-02052-3.
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Aarts E, Akkerman A, Altgassen M, Bartels R, Beckers D, Bevelander K, Bijleveld E, Davidson EB, Boleij A, Bralten J, Cillessen T, Claassen J, Cools R, Cornelissen I, Dresler M, Eijsvogels T, Faber M, Fernández G, Figner B, Fritsche M, Füllbrunn S, Gayet S, van Gelder MMHJ, Gerven MV, Geurts S, Greven CU, Groefsema M, Haak K, Hagoort P, Hartman Y, van der Heijden B, Hermans E, Heuvelmans V, Hintz F, Hollander JD, Hulsman AM, Idesis S, Jaeger M, Janse E, Janzing J, Kessels RPC, Karremans JC, Kleijn WD, Klein M, Klumpers F, Kohn N, Korzilius H, Krahmer B, Lange FD, Leeuwen JV, Liu H, Luijten M, Manders P, Manevska K, Marques JP, Matthews J, McQueen JM, Medendorp P, Melis R, Meyer A, Oosterman J, Overbeek L, Peelen M, Popma J, Postma G, Roelofs K, van Rossenberg YGT, Schaap G, Scheepers P, Selen L, Starren M, Swinkels DW, Tendolkar I, Thijssen D, Timmerman H, Tutunji R, Tuladhar A, Veling H, Verhagen M, Verkroost J, Vink J, Vriezekolk V, Vrijsen J, Vyrastekova J, Wal SVD, Willems R, Willemsen A. Correction: Protocol of the Healthy Brain Study: An accessible resource for understanding the human brain and how it dynamically and individually operates in its bio-social context. PLoS One 2022; 17:e0267071. [PMID: 35404975 PMCID: PMC9000123 DOI: 10.1371/journal.pone.0267071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Aarts E, Akkerman A, Altgassen M, Bartels R, Beckers D, Bevelander K, Bijleveld E, Blaney Davidson E, Boleij A, Bralten J, Cillessen T, Claassen J, Cools R, Cornelissen I, Dresler M, Eijsvogels T, Faber M, Fernández G, Figner B, Fritsche M, Füllbrunn S, Gayet S, van Gelder MMHJ, van Gerven M, Geurts S, Greven CU, Groefsema M, Haak K, Hagoort P, Hartman Y, van der Heijden B, Hermans E, Heuvelmans V, Hintz F, den Hollander J, Hulsman AM, Idesis S, Jaeger M, Janse E, Janzing J, Kessels RPC, Karremans JC, de Kleijn W, Klein M, Klumpers F, Kohn N, Korzilius H, Krahmer B, de Lange F, van Leeuwen J, Liu H, Luijten M, Manders P, Manevska K, Marques JP, Matthews J, McQueen JM, Medendorp P, Melis R, Meyer A, Oosterman J, Overbeek L, Peelen M, Popma J, Postma G, Roelofs K, van Rossenberg YGT, Schaap G, Scheepers P, Selen L, Starren M, Swinkels DW, Tendolkar I, Thijssen D, Timmerman H, Tutunji R, Tuladhar A, Veling H, Verhagen M, Verkroost J, Vink J, Vriezekolk V, Vrijsen J, Vyrastekova J, van der Wal S, Willems R, Willemsen A. Protocol of the Healthy Brain Study: An accessible resource for understanding the human brain and how it dynamically and individually operates in its bio-social context. PLoS One 2021; 16:e0260952. [PMID: 34965252 PMCID: PMC8716054 DOI: 10.1371/journal.pone.0260952] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 11/20/2021] [Indexed: 12/29/2022] Open
Abstract
The endeavor to understand the human brain has seen more progress in the last few decades than in the previous two millennia. Still, our understanding of how the human brain relates to behavior in the real world and how this link is modulated by biological, social, and environmental factors is limited. To address this, we designed the Healthy Brain Study (HBS), an interdisciplinary, longitudinal, cohort study based on multidimensional, dynamic assessments in both the laboratory and the real world. Here, we describe the rationale and design of the currently ongoing HBS. The HBS is examining a population-based sample of 1,000 healthy participants (age 30–39) who are thoroughly studied across an entire year. Data are collected through cognitive, affective, behavioral, and physiological testing, neuroimaging, bio-sampling, questionnaires, ecological momentary assessment, and real-world assessments using wearable devices. These data will become an accessible resource for the scientific community enabling the next step in understanding the human brain and how it dynamically and individually operates in its bio-social context. An access procedure to the collected data and bio-samples is in place and published on https://www.healthybrainstudy.nl/en/data-and-methods/access. Trail registration:https://www.trialregister.nl/trial/7955.
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Affiliation(s)
- Healthy Brain Study consortium
- Radboud University, Nijmegen, The Netherlands
- Radboud University Medical Center, Nijmegen, The Netherlands
- Max Planck Institute for Psycholinguistics, Nijmegen, The Netherlands
| | - Esther Aarts
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
| | - Agnes Akkerman
- Institute for Management Research, Radboud University, Nijmegen, The Netherlands
| | | | - Ronald Bartels
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - Debby Beckers
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | | | - Erik Bijleveld
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | | | | | - Janita Bralten
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - Toon Cillessen
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | - Jurgen Claassen
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - Roshan Cools
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Martin Dresler
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Myrthe Faber
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Guillén Fernández
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
- * E-mail:
| | - Bernd Figner
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | - Matthias Fritsche
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
| | - Sascha Füllbrunn
- Institute for Management Research, Radboud University, Nijmegen, The Netherlands
| | - Surya Gayet
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
| | | | - Marcel van Gerven
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
| | - Sabine Geurts
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | - Corina U. Greven
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Martine Groefsema
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | - Koen Haak
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Peter Hagoort
- Max Planck Institute for Psycholinguistics, Nijmegen, The Netherlands
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
| | - Yvonne Hartman
- Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Erno Hermans
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Florian Hintz
- Max Planck Institute for Psycholinguistics, Nijmegen, The Netherlands
| | | | - Anneloes M. Hulsman
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | - Sebastian Idesis
- Center for Brain and Cognition, University Pompeu Fabra, Barcelona, Spain
| | - Martin Jaeger
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - Esther Janse
- Centre for Language Studies, Radboud University, Nijmegen, The Netherlands
| | - Joost Janzing
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - Roy P. C. Kessels
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Johan C. Karremans
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | - Willemien de Kleijn
- School of Psychology and Artificial Intelligence, Radboud University, Nijmegen, The Netherlands
| | - Marieke Klein
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - Floris Klumpers
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | - Nils Kohn
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Hubert Korzilius
- Institute for Management Research, Radboud University, Nijmegen, The Netherlands
| | - Bas Krahmer
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - Floris de Lange
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
| | - Judith van Leeuwen
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Huaiyu Liu
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | - Maartje Luijten
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | - Peggy Manders
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - Katerina Manevska
- Institute for Management Research, Radboud University, Nijmegen, The Netherlands
| | - José P. Marques
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
| | - Jon Matthews
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - James M. McQueen
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
| | - Pieter Medendorp
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
| | - René Melis
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - Antje Meyer
- Max Planck Institute for Psycholinguistics, Nijmegen, The Netherlands
| | - Joukje Oosterman
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
| | - Lucy Overbeek
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - Marius Peelen
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
| | - Jean Popma
- Interdisciplinary Hub for Security, Privacy and Data Governance, Radboud University, Nijmegen, The Netherlands
| | - Geert Postma
- Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - Karin Roelofs
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | | | - Gabi Schaap
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | - Paul Scheepers
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - Luc Selen
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
| | - Marianne Starren
- Centre for Language Studies, Radboud University, Nijmegen, The Netherlands
| | | | - Indira Tendolkar
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Dick Thijssen
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - Hans Timmerman
- University Medical Center Groningen, Groningen, The Netherlands
| | - Rayyan Tutunji
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Anil Tuladhar
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Harm Veling
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | - Maaike Verhagen
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | | | - Jacqueline Vink
- Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
| | | | - Janna Vrijsen
- Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jana Vyrastekova
- Institute for Management Research, Radboud University, Nijmegen, The Netherlands
| | | | - Roel Willems
- Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands
- Centre for Language Studies, Radboud University, Nijmegen, The Netherlands
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Taddese R, Roelofs R, Draper D, Wu X, Wu S, Swinkels DW, Tjalsma H, Boleij A. Streptococcus gallolyticus Increases Expression and Activity of Aryl Hydrocarbon Receptor-Dependent CYP1 Biotransformation Capacity in Colorectal Epithelial Cells. Front Cell Infect Microbiol 2021; 11:740704. [PMID: 34778104 PMCID: PMC8579041 DOI: 10.3389/fcimb.2021.740704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 10/04/2021] [Indexed: 12/16/2022] Open
Abstract
Objective The opportunistic pathogen Streptococcus gallolyticus is one of the few intestinal bacteria that has been consistently linked to colorectal cancer (CRC). This study aimed to identify novel S. gallolyticus-induced pathways in colon epithelial cells that could further explain how S. gallolyticus contributes to CRC development. Design and Results Transcription profiling of in vitro cultured CRC cells that were exposed to S. gallolyticus revealed the specific induction of oxidoreductase pathways. Most prominently, CYP1A and ALDH1 genes that encode phase I biotransformation enzymes were responsible for the detoxification or bio-activation of toxic compounds. A common feature is that these enzymes are induced through the Aryl hydrocarbon receptor (AhR). Using the specific inhibitor CH223191, we showed that the induction of CYP1A was dependent on the AhR both in vitro using multiple CRC cell lines as in vivo using wild-type C57bl6 mice colonized with S. gallolyticus. Furthermore, we showed that CYP1 could also be induced by other intestinal bacteria and that a yet unidentified diffusible factor from the S. galloltyicus secretome (SGS) induces CYP1A enzyme activity in an AhR-dependent manner. Importantly, priming CRC cells with SGS increased the DNA damaging effect of the polycyclic aromatic hydrocarbon 3-methylcholanthrene. Conclusion This study shows that gut bacteria have the potential to modulate the expression of biotransformation pathways in colonic epithelial cells in an AhR-dependent manner. This offers a novel theory on the contribution of intestinal bacteria to the etiology of CRC by modifying the capacity of intestinal epithelial or (pre-)cancerous cells to (de)toxify dietary components, which could alter intestinal susceptibility to DNA damaging events.
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Affiliation(s)
- Rahwa Taddese
- Department of Pathology, Nijmegen Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Centre (Radboudumc), Nijmegen, Netherlands
| | - Rian Roelofs
- Laboratory Medicine, Nijmegen Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Centre (Radboudumc), Nijmegen, Netherlands
| | - Derk Draper
- Department of Pathology, Nijmegen Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Centre (Radboudumc), Nijmegen, Netherlands
| | - Xinqun Wu
- Department of Medicine, Division of Infectious Diseases, Johns Hopkins University, Baltimore, MD, United States
| | - Shaoguang Wu
- Department of Medicine, Division of Infectious Diseases, Johns Hopkins University, Baltimore, MD, United States
| | - Dorine W Swinkels
- Laboratory Medicine, Nijmegen Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Centre (Radboudumc), Nijmegen, Netherlands
| | - Harold Tjalsma
- Laboratory Medicine, Nijmegen Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Centre (Radboudumc), Nijmegen, Netherlands
| | - Annemarie Boleij
- Department of Pathology, Nijmegen Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Centre (Radboudumc), Nijmegen, Netherlands
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7
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Westdorp H, Sweep MWD, Gorris MAJ, Hoentjen F, Boers-Sonderen MJ, van der Post RS, van den Heuvel MM, Piet B, Boleij A, Bloemendal HJ, de Vries IJM. Mechanisms of Immune Checkpoint Inhibitor-Mediated Colitis. Front Immunol 2021; 12:768957. [PMID: 34777387 PMCID: PMC8586074 DOI: 10.3389/fimmu.2021.768957] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 10/11/2021] [Indexed: 12/12/2022] Open
Abstract
Immune checkpoint inhibitors (ICIs) have provided tremendous clinical benefit in several cancer types. However, systemic activation of the immune system also leads to several immune-related adverse events. Of these, ICI-mediated colitis (IMC) occurs frequently and is the one with the highest absolute fatality. To improve current treatment strategies, it is important to understand the cellular mechanisms that induce this form of colitis. In this review, we discuss important pathways that are altered in IMC in mouse models and in human colon biopsy samples. This reveals a complex interplay between several types of immune cells and the gut microbiome. In addition to a mechanistic understanding, patients at risk should be identifiable before ICI therapy. Here we propose to focus on T-cell subsets that interact with bacteria after inducing epithelial damage. Especially, intestinal resident immune cells are of interest. This may lead to a better understanding of IMC and provides opportunities for prevention and management.
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Affiliation(s)
- Harm Westdorp
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Nijmegen, Netherlands
- Department of Medical Oncology, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Mark W. D. Sweep
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Nijmegen, Netherlands
- Department of Medical Oncology, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Mark A. J. Gorris
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Nijmegen, Netherlands
- Oncode Institute, Nijmegen, Netherlands
| | - Frank Hoentjen
- Department of Gastroenterology, Radboud University Medical Centre, Nijmegen, Netherlands
- Division of Gastroenterology, University of Alberta, Edmonton, AB, Canada
| | | | - Rachel S. van der Post
- Department of Pathology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Nijmegen, Netherlands
| | | | - Berber Piet
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Nijmegen, Netherlands
- Department of Pulmonary Diseases, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Annemarie Boleij
- Department of Pathology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Haiko J. Bloemendal
- Department of Medical Oncology, Radboud University Medical Centre, Nijmegen, Netherlands
| | - I. Jolanda M. de Vries
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Nijmegen, Netherlands
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8
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Aarts J, Boleij A, Pieters BCH, Feitsma AL, van Neerven RJJ, Ten Klooster JP, M'Rabet L, Arntz OJ, Koenders MI, van de Loo FAJ. Flood Control: How Milk-Derived Extracellular Vesicles Can Help to Improve the Intestinal Barrier Function and Break the Gut-Joint Axis in Rheumatoid Arthritis. Front Immunol 2021; 12:703277. [PMID: 34394100 PMCID: PMC8356634 DOI: 10.3389/fimmu.2021.703277] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 07/06/2021] [Indexed: 12/12/2022] Open
Abstract
Many studies provided compelling evidence that extracellular vesicles (EVs) are involved in the regulation of the immune response, acting as both enhancers and dampeners of the immune system, depending on the source and type of vesicle. Research, including ours, has shown anti-inflammatory effects of milk-derived EVs, using human breast milk as well as bovine colostrum and store-bought pasteurized cow milk, in in vitro systems as well as therapeutically in animal models. Although it is not completely elucidated which proteins and miRNAs within the milk-derived EVs contribute to these immunosuppressive capacities, one proposed mechanism of action of the EVs is via the modulation of the crosstalk between the (intestinal) microbiome and their host health. There is increasing awareness that the gut plays an important role in many inflammatory diseases. Enhanced intestinal leakiness, dysbiosis of the gut microbiome, and bowel inflammation are not only associated with intestinal diseases like colitis and Crohn's disease, but also characteristic for systemic inflammatory diseases such as lupus, multiple sclerosis, and rheumatoid arthritis (RA). Strategies to target the gut, and especially its microbiome, are under investigation and hold a promise as a therapeutic intervention for these diseases. The use of milk-derived EVs, either as stand-alone drug or as a drug carrier, is often suggested in recent years. Several research groups have studied the tolerance and safety of using milk-derived EVs in animal models. Due to its composition, milk-derived EVs are highly biocompatible and have limited immunogenicity even cross species. Furthermore, it has been demonstrated that milk-derived EVs, when taken up in the gastro-intestinal tract, stay intact after absorption, indicating excellent stability. These characteristics make milk-derived EVs very suitable as drug carriers, but also by themselves, these EVs already have a substantial immunoregulatory function, and even without loading, these vesicles can act as therapeutics. In this review, we will address the immunomodulating capacity of milk-derived EVs and discuss their potential as therapy for RA patients. Review criteria The search terms "extracellular vesicles", "exosomes", "microvesicles", "rheumatoid arthritis", "gut-joint axis", "milk", and "experimental arthritis" were used. English-language full text papers (published between 1980 and 2021) were identified from PubMed and Google Scholar databases. The reference list for each paper was further searched to identify additional relevant articles.
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Affiliation(s)
- Joyce Aarts
- Department of Rheumatology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center (Radboudumc), Nijmegen, Netherlands
| | - Annemarie Boleij
- Department of Pathology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center (Radboudumc), Nijmegen, Netherlands
| | - Bartijn C H Pieters
- Department of Rheumatology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center (Radboudumc), Nijmegen, Netherlands
| | | | - R J Joost van Neerven
- FrieslandCampina, Amersfoort, Netherlands.,Cell Biology and Immunology, Wageningen University & Research, Wageningen, Netherlands
| | - Jean Paul Ten Klooster
- Research Centre for Healthy and Sustainable Living, Innovative Testing in Life Sciences and Chemistry, University of Applied Sciences, Utrecht, Netherlands
| | - Laura M'Rabet
- Research Centre for Healthy and Sustainable Living, Innovative Testing in Life Sciences and Chemistry, University of Applied Sciences, Utrecht, Netherlands
| | - Onno J Arntz
- Department of Rheumatology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center (Radboudumc), Nijmegen, Netherlands
| | - Marije I Koenders
- Department of Rheumatology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center (Radboudumc), Nijmegen, Netherlands
| | - Fons A J van de Loo
- Department of Rheumatology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center (Radboudumc), Nijmegen, Netherlands
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9
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Bruggeling CE, Garza DR, Achouiti S, Mes W, Dutilh BE, Boleij A. Optimized bacterial DNA isolation method for microbiome analysis of human tissues. Microbiologyopen 2021; 10:e1191. [PMID: 34180607 PMCID: PMC8208965 DOI: 10.1002/mbo3.1191] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 04/13/2021] [Accepted: 04/13/2021] [Indexed: 12/14/2022] Open
Abstract
Recent advances in microbiome sequencing have rendered new insights into the role of the microbiome in human health with potential clinical implications. Unfortunately, the presence of host DNA in tissue isolates has hampered the analysis of host‐associated bacteria. Here, we present a DNA isolation protocol for tissue, optimized on biopsies from resected human colons (~2–5 mm in size), which includes reduction of human DNA without distortion of relative bacterial abundance at the phylum level. We evaluated which concentrations of Triton and saponin lyse human cells and leave bacterial cells intact, in combination with DNAse treatment to deplete released human DNA. Saponin at a concentration of 0.0125% in PBS lysed host cells, resulting in a 4.5‐fold enrichment of bacterial DNA while preserving the relative abundance of Firmicutes, Bacteroidetes, γ‐Proteobacteria, and Actinobacteria assessed by qPCR. Our optimized protocol was validated in the setting of two large clinical studies on 521 in vivo acquired colon biopsies of 226 patients using shotgun metagenomics. The resulting bacterial profiles exhibited alpha and beta diversities that are similar to the diversities found by 16S rRNA amplicon sequencing. A direct comparison between shotgun metagenomics and 16S rRNA amplicon sequencing of 15 forceps tissue biopsies showed similar bacterial profiles and a similar Shannon diversity index between the sequencing methods. Hereby, we present the first protocol for enriching bacterial DNA from tissue biopsies that allows efficient isolation of all bacteria. Our protocol facilitates analysis of a wide spectrum of bacteria of clinical tissue samples improving their applicability for microbiome research.
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Affiliation(s)
- Carlijn E Bruggeling
- Department of Pathology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center (Radboudumc), Nijmegen, The Netherlands
| | - Daniel R Garza
- Radboud Institute for Molecular Life Sciences (RIMLS), Center for Molecular and Biomolecular Informatics (CMBI), Radboud University Medical Center (Radboudumc), Nijmegen, The Netherlands.,KU Leuven Department of Microbiology, Immunology and Transplantation, Laboratory of Molecular Bacteriology, Rega Institute, Leuven, Belgium
| | - Soumia Achouiti
- Department of Pathology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center (Radboudumc), Nijmegen, The Netherlands
| | - Wouter Mes
- Department of Animal Ecology & Physiology, Institute for Water and Wetland Research (IWWR), Radboud University, Nijmegen, The Netherlands.,Department of Microbiology, Institute for Water and Wetland Research (IWWR), Radboud University, Nijmegen, The Netherlands
| | - Bas E Dutilh
- Radboud Institute for Molecular Life Sciences (RIMLS), Center for Molecular and Biomolecular Informatics (CMBI), Radboud University Medical Center (Radboudumc), Nijmegen, The Netherlands.,Theoretical Biology and Bioinformatics, Science for Life, Utrecht University, Utrecht, The Netherlands
| | - Annemarie Boleij
- Department of Pathology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center (Radboudumc), Nijmegen, The Netherlands
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10
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Becker HEF, Jamin C, Bervoets L, Boleij A, Xu P, Pierik MJ, Stassen FRM, Savelkoul PHM, Penders J, Jonkers DMAE. Higher Prevalence of Bacteroides fragilis in Crohn's Disease Exacerbations and Strain-Dependent Increase of Epithelial Resistance. Front Microbiol 2021; 12:598232. [PMID: 34168621 PMCID: PMC8219053 DOI: 10.3389/fmicb.2021.598232] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 04/30/2021] [Indexed: 12/12/2022] Open
Abstract
Bacteroides fragilis has previously been linked to Crohn's disease (CD) exacerbations, but results are inconsistent and underlying mechanisms unknown. This study investigates the epidemiology of B. fragilis and its virulence factors bft (enterotoxin) and ubiquitin among 181 CD patients and the impact on the intestinal epithelial barrier in vitro. The prevalence of B. fragilis was significantly higher in active (n = 69/88, 78.4%) as compared to remissive (n = 58/93, 62.4%, p = 0.018) CD patients. Moreover, B. fragilis was associated with intestinal strictures. Interestingly, the intestinal barrier function, as examined by transepithelial electrical resistance (TEER) measurements of Caco-2 monolayers, increased when exposed to secretomes of bft-positive (bft-1 and bft-2 isotype; increased TEER ∼160%, p < 0.001) but not when exposed to bft-negative strains. Whole metagenome sequencing and metabolomics, respectively, identified nine coding sequences and two metabolites that discriminated TEER-increasing from non-TEER-increasing strains. This study revealed a higher B. fragilis prevalence during exacerbation. Surprisingly, bft-positive secretomes increased epithelial resistance, but we excluded Bft as the likely causative factor.
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Affiliation(s)
- Heike E. F. Becker
- Department of Medical Microbiology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands
- Division of Gastroenterology/Hepatology, Department of Internal Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands
| | - Casper Jamin
- Department of Medical Microbiology, Caphri School for Public Health and Primary Care, Maastricht University Medical Centre+, Maastricht, Netherlands
| | - Liene Bervoets
- Department of Medical Microbiology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands
| | - Annemarie Boleij
- Department of Pathology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, Netherlands
| | - Pan Xu
- Division of Gastroenterology/Hepatology, Department of Internal Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands
| | - Marie J. Pierik
- Division of Gastroenterology/Hepatology, Department of Internal Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands
| | - Frank R. M. Stassen
- Department of Medical Microbiology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands
| | - Paul H. M. Savelkoul
- Department of Medical Microbiology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands
- Department of Medical Microbiology and Infection Control, Amsterdam University Medical Center, Location VUMC, Amsterdam, Netherlands
| | - John Penders
- Department of Medical Microbiology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands
- Department of Medical Microbiology, Caphri School for Public Health and Primary Care, Maastricht University Medical Centre+, Maastricht, Netherlands
| | - Daisy M. A. E. Jonkers
- Division of Gastroenterology/Hepatology, Department of Internal Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands
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11
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Boleij A, Fathi P, Dalton W, Park B, Wu X, Huso D, Allen J, Besharati S, Anders RA, Housseau F, Mackenzie AE, Jenkins L, Milligan G, Wu S, Sears CL. G-protein coupled receptor 35 (GPR35) regulates the colonic epithelial cell response to enterotoxigenic Bacteroides fragilis. Commun Biol 2021; 4:585. [PMID: 33990686 PMCID: PMC8121840 DOI: 10.1038/s42003-021-02014-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 03/18/2021] [Indexed: 02/03/2023] Open
Abstract
G protein-coupled receptor (GPR)35 is highly expressed in the gastro-intestinal tract, predominantly in colon epithelial cells (CEC), and has been associated with inflammatory bowel diseases (IBD), suggesting a role in gastrointestinal inflammation. The enterotoxigenic Bacteroides fragilis (ETBF) toxin (BFT) is an important virulence factor causing gut inflammation in humans and animal models. We identified that BFT signals through GPR35. Blocking GPR35 function in CECs using the GPR35 antagonist ML145, in conjunction with shRNA knock-down and CRISPRcas-mediated knock-out, resulted in reduced CEC-response to BFT as measured by E-cadherin cleavage, beta-arrestin recruitment and IL-8 secretion. Importantly, GPR35 is required for the rapid onset of ETBF-induced colitis in mouse models. GPR35-deficient mice showed reduced death and disease severity compared to wild-type C57Bl6 mice. Our data support a role for GPR35 in the CEC and mucosal response to BFT and underscore the importance of this molecule for sensing ETBF in the colon.
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Affiliation(s)
- Annemarie Boleij
- Johns Hopkins University, Department of Medicine, Division of Infectious Diseases, Baltimore, MD, USA.
- Radboud University Medical Center (Radboudumc), Department of Pathology, Radboud Institute for Molecular Life sciences (RIMLS), Nijmegen, The Netherlands.
| | - Payam Fathi
- Johns Hopkins University, Department of Medicine, Division of Infectious Diseases, Baltimore, MD, USA
| | - William Dalton
- Johns Hopkins University, Department of Oncology Center-Hematologic Malignancies, Baltimore, MD, USA
| | - Ben Park
- Johns Hopkins University, Department of Oncology Center-Hematologic Malignancies, Baltimore, MD, USA
- Vanderbilt University Medical Center, Department of Medicine, Division of Hematology and Oncology, Nashville, Tenessee, USA
| | - Xinqun Wu
- Johns Hopkins University, Department of Medicine, Division of Infectious Diseases, Baltimore, MD, USA
| | - David Huso
- Johns Hopkins University, Department of Molecular and Comparative Pathobiology, Baltimore, MD, USA
| | - Jawara Allen
- Johns Hopkins University, Department of Medicine, Division of Infectious Diseases, Baltimore, MD, USA
| | - Sepideh Besharati
- Johns Hopkins University, Department of Pathobiology, Baltimore, MD, USA
| | - Robert A Anders
- Johns Hopkins University, Department of Pathobiology, Baltimore, MD, USA
| | - Franck Housseau
- Johns Hopkins University, Department of Oncology Sidney Kimmel Comprehensive Cancer Center, Baltimore, MD, USA
| | - Amanda E Mackenzie
- Centre for Translational Pharmacology, Institute of Molecular, Cell, and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland, UK
| | - Laura Jenkins
- Centre for Translational Pharmacology, Institute of Molecular, Cell, and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland, UK
| | - Graeme Milligan
- Centre for Translational Pharmacology, Institute of Molecular, Cell, and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland, UK
| | - Shaoguang Wu
- Johns Hopkins University, Department of Medicine, Division of Infectious Diseases, Baltimore, MD, USA
| | - Cynthia L Sears
- Johns Hopkins University, Department of Medicine, Division of Infectious Diseases, Baltimore, MD, USA
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12
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Taddese R, Belzer C, Aalvink S, de Jonge MI, Nagtegaal ID, Dutilh BE, Boleij A. Production of inactivated gram-positive and gram-negative species with preserved cellular morphology and integrity. J Microbiol Methods 2021; 184:106208. [PMID: 33766606 DOI: 10.1016/j.mimet.2021.106208] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/26/2021] [Accepted: 03/19/2021] [Indexed: 02/07/2023]
Abstract
There are many approaches available to produce inactive bacteria by termination of growth, each with a different efficacy, impact on cell integrity, and potential for application in standardized inactivation protocols. The aim of this study was to compare these approaches and develop a standardized protocol for generation of inactivated Gram-positive and Gram-negative bacteria, yielding cells that are metabolically dead with retained cellular integrity i.e., preserving the surface and limited leakage of intracellular proteins and DNA. These inactivated bacteria are required for various applications, for instance, when investigating receptor-triggered signaling or bacterial contact-dependent analysis of cell lines requiring long incubation times. We inactivated eight different bacterial strains of different species by treatment with beta-propiolactone, ethanol, formalin, sodium hydroxide, and pasteurization. Inactivation efficacy was determined by culturing, and cell wall integrity assessed by quantifying released DNA, bacterial membrane and intracellular DNA staining, and visualization by scanning electron microscopy. Based on these results, we discuss the bacterial inactivation methods, and their advantages and disadvantages to study host-microbe interactions with inactivated bacteria.
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Affiliation(s)
- Rahwa Taddese
- Department of Pathology, Radboud University Medical Center, Nijmegen, the Netherlands.
| | - Clara Belzer
- Laboratory of Microbiology, Wageningen University and Research, Wageningen, the Netherlands.
| | - Steven Aalvink
- Laboratory of Pediatric Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands.
| | - Marien I de Jonge
- Laboratory of Pediatric Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands.
| | - Iris D Nagtegaal
- Department of Pathology, Radboud University Medical Center, Nijmegen, the Netherlands.
| | - Bas E Dutilh
- Centre for Molecular and Biomolecular Informatics, Radboud University Medical Center, Nijmegen, the Netherlands; Theoretical Biology and Bioinformatics, Utrecht University, Utrecht, the Netherlands
| | - Annemarie Boleij
- Department of Pathology, Radboud University Medical Center, Nijmegen, the Netherlands.
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13
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Dieleman S, Aarnoutse R, Ziemons J, Kooreman L, Boleij A, Smidt M. Exploring the Potential of Breast Microbiota as Biomarker for Breast Cancer and Therapeutic Response. Am J Pathol 2021; 191:968-982. [PMID: 33713687 DOI: 10.1016/j.ajpath.2021.02.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 01/26/2021] [Accepted: 02/17/2021] [Indexed: 02/07/2023]
Abstract
Breast cancer tissue contains its own unique microbiota. Emerging preclinical data indicates that breast microbiota dysbiosis contributes to breast cancer initiation and progression. Furthermore, the breast microbiota may be a promising biomarker for treatment selection and prognosis. Differences in breast microbiota composition have been found between breast cancer subtypes and disease severities that may contribute to immunosuppression, enabling tumor cells to evade immune destruction. Interactions between breast microbiota, gut microbiota, and immune system are proposed, all forming potential targets to increase therapeutic efficacy. In addition, because the gut microbiota affects the host immune system and systemic availability of estrogen and bile acids known to influence tumor biology, gut microbiota modulation could be used to manipulate breast microbiota composition. Identifying breast and gut microbial compositions that respond positively to certain anticancer therapeutics could significantly reduce cancer burden. Additional research is needed to unravel the complexity of breast microbiota functioning and its interactions with the gut and the immune system. In this review, developments in the understanding of breast microbiota and its interaction with the immune system and the gut microbiota are discussed. Furthermore, the biomarker potential of breast microbiota is evaluated in conjunction with possible strategies to target microbiota in order to improve breast cancer treatment.
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Affiliation(s)
- Sabine Dieleman
- GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Surgery, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Romy Aarnoutse
- GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Surgery, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Janine Ziemons
- GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Surgery, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Loes Kooreman
- GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Pathology, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Annemarie Boleij
- Department of Pathology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences (RIMLS), Nijmegen, the Netherlands
| | - Marjolein Smidt
- GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Surgery, Maastricht University Medical Center+, Maastricht, the Netherlands.
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14
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Witjes VM, Boleij A, Halffman W. Reducing versus Embracing Variation as Strategies for Reproducibility: The Microbiome of Laboratory Mice. Animals (Basel) 2020; 10:E2415. [PMID: 33348632 PMCID: PMC7767075 DOI: 10.3390/ani10122415] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 12/10/2020] [Accepted: 12/15/2020] [Indexed: 12/12/2022] Open
Abstract
Irreproducibility is a well-recognized problem in biomedical animal experimentation. Phenotypic variation in animal models is one of the many challenging causes of irreproducibility. How to deal with phenotypic variation in experimental designs is a topic of debate. Both reducing and embracing variation are highlighted as strategies for reproducibility. In this theoretical review, we use variation in mouse microbiome composition as an example to analyze this ongoing discussion, drawing on both animal research and philosophy of science. We provide a conceptual explanation of reproducibility and analyze how the microbiome affects mouse phenotypes to demonstrate that the role of the microbiome in irreproducibility can be understood in two ways: (i) the microbiome can act as a confounding factor, and (ii) the result may not be generalizable to mice harboring a different microbiome composition. We elucidate that reducing variation minimizes confounding, whereas embracing variation ensures generalizability. These contrasting strategies make dealing with variation in experimental designs extremely complex. Here, we conclude that the most effective strategy depends on the specific research aim and question. The field of biomedical animal experimentation is too broad to identify a single optimal strategy. Thus, dealing with variation should be considered on a case-by-case basis, and awareness amongst researchers is essential.
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Affiliation(s)
- Vera M. Witjes
- Institute for Science in Society, Faculty of Science, Radboud University, 6500 GL Nijmegen, The Netherlands;
| | - Annemarie Boleij
- Department of Pathology, Radboud Institute for Molecular Life Science (RIMLS), Radboud University Medical Center, 6500 HB Nijmegen, The Netherlands;
| | - Willem Halffman
- Institute for Science in Society, Faculty of Science, Radboud University, 6500 GL Nijmegen, The Netherlands;
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15
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Taddese R, Garza DR, Ruiter LN, de Jonge MI, Belzer C, Aalvink S, Nagtegaal ID, Dutilh BE, Boleij A. Growth rate alterations of human colorectal cancer cells by 157 gut bacteria. Gut Microbes 2020; 12:1-20. [PMID: 32915102 PMCID: PMC7524400 DOI: 10.1080/19490976.2020.1799733] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Several bacteria in the human gut microbiome have been associated with colorectal cancer (CRC) by high-throughput screens. In some cases, molecular mechanisms have been elucidated that drive tumorigenesis, including bacterial membrane proteins or secreted molecules that interact with the human cancer cells. For most gut bacteria, however, it remains unknown if they enhance or inhibit cancer cell growth. Here, we screened bacteria-free supernatants (secretomes) and inactivated cells of over 150 cultured bacterial strains for their effects on cell growth. We observed family-level and strain-level effects that often differed between bacterial cells and secretomes, suggesting that different molecular mechanisms are at play. Secretomes of Bacteroidaceae, Enterobacteriaceae, and Erysipelotrichaceae bacteria enhanced cell growth, while most Fusobacteriaceae cells and secretomes inhibited growth, contrasting prior findings. In some bacteria, the presence of specific functional genes was associated with cell growth rates, including the virulence genes TcdA, TcdB in Clostridiales and FadA in Fusobacteriaceae, which both inhibited growth. Bacteroidaceae cells that enhanced growth were enriched for genes of the cobalamin synthesis pathway, while Fusobacteriaceae cells that inhibit growth were enriched for genes of the ethanolamine utilization pathway. Together, our results reveal how different gut bacteria have wide-ranging effects on cell growth, contribute a better understanding of the effects of the gut microbiome on host cells, and provide a valuable resource for identifying candidate target genes for potential microbiome-based diagnostics and treatment strategies.
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Affiliation(s)
- Rahwa Taddese
- Department of Pathology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Daniel R. Garza
- Centre for Molecular and Biomolecular Informatics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Lilian N. Ruiter
- Department of Pathology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Marien I. de Jonge
- Section Pediatric Infectious Diseases, Laboratory of Medical Immunology, Radboud Center for Infectious Diseases (RCI), Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Clara Belzer
- Laboratory of Microbiology, Wageningen University and Research, Wageningen, The Netherlands
| | - Steven Aalvink
- Laboratory of Microbiology, Wageningen University and Research, Wageningen, The Netherlands
| | - Iris D. Nagtegaal
- Department of Pathology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Bas E. Dutilh
- Centre for Molecular and Biomolecular Informatics, Radboud University Medical Center, Nijmegen, The Netherlands,Theoretical Biology and Bioinformatics, Utrecht University, Utrecht, The Netherlands,CONTACT Bas E.Dutilh Centre for Molecular and Biomolecular Informatics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Annemarie Boleij
- Department of Pathology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, The Netherlands,Annemarie Boleij Department of Pathology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, The Netherlands
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16
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Bruggeling C, Witjes V, Garza D, Fransen M, Krekels J, Bisseling T, van Kouwen M, Hoogerbrugge N, Lücker S, Dutilh B, Nagtegaal I, Boleij A. Abstract PR01: Right-sided colonic biofilms are associated with adenoma formation in patients with Lynch syndrome. Cancer Res 2020. [DOI: 10.1158/1538-7445.mvc2020-pr01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Colonic bacterial biofilms are an emerging manifestation in colorectal cancer (CRC); they exhibit carcinogenic properties and are frequently present on right-sided cancerous lesions. Whether bacterial biofilms propose a risk factor for early carcinogenesis in humans is yet unresolved. Therefore, we studied bacterial biofilms in tandem with adenoma formation in patients with Lynch syndrome (LS). LS patients carry a pathogenic germline variant in one of the DNA mismatch repair (MMR) genes, resulting in a variable predisposition to develop colonic cancerous lesions. A total of 100 LS patients were included in our study, consisting of 23 MLH1, 24 MSH2, 36 MSH6, and 17 PMS2 MMR variants. During regular screening colonoscopies, normal-appearing forceps biopsies were taken from colon ascendens (right colon) and descendens (left colon). Biopsies were screened for bacterial biofilms using fluorescent in situ hybridization by targeting bacterial 16s rRNA. The frequency of colorectal adenomas (tubular adenomas and [tubulo]villous adenomas) before and during colonoscopy was registered. Overall, 60% of patients presented with a biofilm, of which most were right-sided (right-sided: 25%, both sides: 21%, left-sided: 14%). Interestingly, adenomas were more frequently present in patients with a right-sided biofilm (right-sided: 64%, both sides: 58%) than in patients with a left-sided biofilm (29%) or no biofilm (38%). The occurrence of bacterial biofilms was not correlated with age, BMI, or MMR-variant. Statistical analysis revealed that right-sided bacterial biofilms correlated with right-sided adenomas (Pearson: 0.272, p=0.007) and left-sided adenomas (Pearson: 0.227, p=0.026), while left-sided biofilms were not correlated with left- or right-sided adenomas (Pearson: 0.037, p=0.718 and -.127, p=.213). To model the probability of right-sided adenoma formation, we performed a binary logistic regression analysis and found that age (odds ratio: 1.065 [CI: 1.024; 1.108, p=0.002]) and right-sided biofilms (odds ratio: 3.020 [CI: 1.151; 7.926, p=0.025]) significantly contributed. Our data suggest that right-sided bacterial biofilms are a hallmark for high-risk LS patients and may play a role in early carcinogenesis.
This abstract is also being presented as Poster A06.
Citation Format: Carlijn Bruggeling, Vera Witjes, Daniel Garza, Milou Fransen, Joyce Krekels, Tanya Bisseling, Mariëtte van Kouwen, Nicoline Hoogerbrugge, Sebastian Lücker, Bas Dutilh, Iris Nagtegaal, Annemarie Boleij. Right-sided colonic biofilms are associated with adenoma formation in patients with Lynch syndrome [abstract]. In: Proceedings of the AACR Special Conference on the Microbiome, Viruses, and Cancer; 2020 Feb 21-24; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2020;80(8 Suppl):Abstract nr PR01.
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17
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Garza DR, Taddese R, Wirbel J, Zeller G, Boleij A, Huynen MA, Dutilh BE. Metabolic models predict bacterial passengers in colorectal cancer. Cancer Metab 2020; 8:3. [PMID: 32055399 PMCID: PMC7008539 DOI: 10.1186/s40170-020-0208-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 01/07/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Colorectal cancer (CRC) is a complex multifactorial disease. Increasing evidence suggests that the microbiome is involved in different stages of CRC initiation and progression. Beyond specific pro-oncogenic mechanisms found in pathogens, metagenomic studies indicate the existence of a microbiome signature, where particular bacterial taxa are enriched in the metagenomes of CRC patients. Here, we investigate to what extent the abundance of bacterial taxa in CRC metagenomes can be explained by the growth advantage resulting from the presence of specific CRC metabolites in the tumor microenvironment. METHODS We composed lists of metabolites and bacteria that are enriched on CRC samples by reviewing metabolomics experimental literature and integrating data from metagenomic case-control studies. We computationally evaluated the growth effect of CRC enriched metabolites on over 1500 genome-based metabolic models of human microbiome bacteria. We integrated the metabolomics data and the mechanistic models by using scores that quantify the response of bacterial biomass production to CRC-enriched metabolites and used these scores to rank bacteria as potential CRC passengers. RESULTS We found that metabolic networks of bacteria that are significantly enriched in CRC metagenomic samples either depend on metabolites that are more abundant in CRC samples or specifically benefit from these metabolites for biomass production. This suggests that metabolic alterations in the cancer environment are a major component shaping the CRC microbiome. CONCLUSION Here, we show with in sillico models that supplementing the intestinal environment with CRC metabolites specifically predicts the outgrowth of CRC-associated bacteria. We thus mechanistically explain why a range of CRC passenger bacteria are associated with CRC, enhancing our understanding of this disease. Our methods are applicable to other microbial communities, since it allows the systematic investigation of how shifts in the microbiome can be explained from changes in the metabolome.
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Affiliation(s)
- Daniel R. Garza
- Centre for Molecular and Biomolecular Informatics, Radboud University Medical Centre, Postbus 9101, 6500 HB Nijmegen, The Netherlands
| | - Rahwa Taddese
- Department of Pathology, Radboud University Medical Center, Postbus 9101, 6500 Nijmegen, HB Netherlands
| | - Jakob Wirbel
- European Molecular Biology Laboratory, Structural and Computational Biology Unit, 69117 Heidelberg, Germany
| | - Georg Zeller
- European Molecular Biology Laboratory, Structural and Computational Biology Unit, 69117 Heidelberg, Germany
| | - Annemarie Boleij
- Department of Pathology, Radboud University Medical Center, Postbus 9101, 6500 Nijmegen, HB Netherlands
| | - Martijn A. Huynen
- Centre for Molecular and Biomolecular Informatics, Radboud University Medical Centre, Postbus 9101, 6500 HB Nijmegen, The Netherlands
| | - Bas E. Dutilh
- Centre for Molecular and Biomolecular Informatics, Radboud University Medical Centre, Postbus 9101, 6500 HB Nijmegen, The Netherlands
- Theoretical Biology and Bioinformatics, Sience4Life, Utrecht University, Hugo R. Kruytgebouw, Room Z-509, Padualaan 8, Utrecht, The Netherlands
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18
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Dabir PD, Bruggeling CE, van der Post RS, Dutilh BE, Hoogerbrugge N, Ligtenberg MJL, Boleij A, Nagtegaal ID. Microsatellite instability screening in colorectal adenomas to detect Lynch syndrome patients? A systematic review and meta-analysis. Eur J Hum Genet 2019; 28:277-286. [PMID: 31695176 DOI: 10.1038/s41431-019-0538-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 10/01/2019] [Accepted: 10/13/2019] [Indexed: 11/09/2022] Open
Abstract
The colorectal cancer spectrum has changed due to population screening programs, with a shift toward adenomas and early cancers. Whether it would be a feasible option to test these adenomas for detection of Lynch syndrome (LS) patients is unclear. Through meta-analysis and systematic review, risk factors for DNA mismatch repair deficiency (dMMR) and microsatellite instability (MSI) in adenomas were identified in LS and unselected patient cohorts. Data were extracted for patient age and MMR variant together with adenoma type, grade, size, and location. A total of 41 studies were included, and contained more than 519 LS patients and 1698 unselected patients with 1142 and 2213 adenomas respectively. dMMR/MSI was present in 69.5% of conventional adenomas in LS patients, compared with 2.8% in unselected patients. In the LS cohort, dMMR/MSI was more frequently present in patients older than 60 years (82% versus 54%). dMMR/MSI was also more common in villous adenomas (84%), adenomas over 1 cm (81%), and adenomas with high grade dysplasia (88%). No significant differences were observed for dMMR/MSI in relation to MMR variants and location of adenomas. In the context of screening, we conclude that detection of dMMR/MSI in conventional adenomas of unselected patients is uncommon and might be considered as indication for LS testing. Within the LS cohort, 69.5% of LS patients could have been detected through dMMR/MSI screening of their conventional adenomas.
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Affiliation(s)
- Parag D Dabir
- Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands.,Department of Pathology, Randers Regional Hospital, Randers, Denmark
| | - Carlijn E Bruggeling
- Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Rachel S van der Post
- Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Bas E Dutilh
- Theoretical Biology and Bioinformatics, Utrecht University, Utrecht, The Netherlands.,Centre for Molecular and Biomolecular Informatics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Nicoline Hoogerbrugge
- Department of Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Marjolijn J L Ligtenberg
- Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands.,Department of Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Annemarie Boleij
- Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Iris D Nagtegaal
- Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands.
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19
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Metz P, Tjan MJH, Wu S, Pervaiz M, Hermans S, Shettigar A, Sears CL, Ritschel T, Dutilh BE, Boleij A. Drug Discovery and Repurposing Inhibits a Major Gut Pathogen-Derived Oncogenic Toxin. Front Cell Infect Microbiol 2019; 9:364. [PMID: 31709196 PMCID: PMC6823872 DOI: 10.3389/fcimb.2019.00364] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 10/08/2019] [Indexed: 01/04/2023] Open
Abstract
Objective: The human intestinal microbiome plays an important role in inflammatory bowel disease (IBD) and colorectal cancer (CRC) development. One of the first discovered bacterial mediators involves Bacteroides fragilis toxin (BFT, also named as fragilysin), a metalloprotease encoded by enterotoxigenic Bacteroides fragilis (ETBF) that causes barrier disruption and inflammation of the colon, leads to tumorigenesis in susceptible mice, and is enriched in the mucosa of IBD and CRC patients. Thus, targeted inhibition of BFT may benefit ETBF carrying patients. Design: By applying two complementary in silico drug design techniques, drug repositioning and molecular docking, we predicted potential BFT inhibitory compounds. Top candidates were tested in vitro on the CRC epithelial cell line HT29/c1 for their potential to inhibit key aspects of BFT activity, being epithelial morphology changes, E-cadherin cleavage (a marker for barrier function) and increased IL-8 secretion. Results: The primary bile acid and existing drug chenodeoxycholic acid (CDCA), currently used for treating gallstones, cerebrotendinous xanthomatosis, and constipation, was found to significantly inhibit all evaluated cell responses to BFT exposure. The inhibition of BFT resulted from a direct interaction between CDCA and BFT, as confirmed by an increase in the melting temperature of the BFT protein in the presence of CDCA. Conclusion: Together, our results show the potential of in silico drug discovery to combat harmful human and microbiome-derived proteins and more specifically suggests a potential for retargeting CDCA to inhibit the pro-oncogenic toxin BFT.
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Affiliation(s)
- Paul Metz
- Centre for Molecular and Biomolecular Informatics, Radboud University Medical Center (Radboudumc), Nijmegen, Netherlands.,Department of Pathology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center (Radboudumc), Nijmegen, Netherlands.,Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Martijn J H Tjan
- Department of Pathology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center (Radboudumc), Nijmegen, Netherlands.,Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Shaoguang Wu
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Mehrosh Pervaiz
- Centre for Molecular and Biomolecular Informatics, Radboud University Medical Center (Radboudumc), Nijmegen, Netherlands
| | - Susanne Hermans
- Centre for Molecular and Biomolecular Informatics, Radboud University Medical Center (Radboudumc), Nijmegen, Netherlands
| | - Aishwarya Shettigar
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Cynthia L Sears
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Tina Ritschel
- Centre for Molecular and Biomolecular Informatics, Radboud University Medical Center (Radboudumc), Nijmegen, Netherlands
| | - Bas E Dutilh
- Centre for Molecular and Biomolecular Informatics, Radboud University Medical Center (Radboudumc), Nijmegen, Netherlands.,Theoretical Biology and Bioinformatics, Utrecht University, Utrecht, Netherlands
| | - Annemarie Boleij
- Department of Pathology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center (Radboudumc), Nijmegen, Netherlands
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20
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Butt J, Fernández de Larrea N, Tjalsma H, Roelofs R, Kato I, Martín V, Pérez-Gómez B, Moreno V, Dierssen-Sotos T, Castilla J, Fernández-Tardón G, Amiano P, Salas D, Alguacil J, Jiménez-Moleón JJ, Huerta JM, de Sanjosé S, Del Campo R, Kogevinas M, Pollán M, Pawlita M, Waterboer T, Boleij A, Aragonés N. Antibody responses to flagellin C and Streptococcus gallolyticus pilus proteins in colorectal cancer. Sci Rep 2019; 9:10847. [PMID: 31350458 PMCID: PMC6659640 DOI: 10.1038/s41598-019-47347-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 07/10/2019] [Indexed: 11/13/2022] Open
Abstract
Antibodies to Streptococcus gallolyticus subspecies gallolyticus (SGG) have been associated with colorectal cancer (CRC). Because SGG may correlate with impaired gut epithelia, we assessed the association of antibodies to bacterial flagellin C (FliC), a measure potentially related to this impairment, with CRC and the CRC-specific interaction with antibodies to SGG proteins. Antibodies to FliC and SGG pilus proteins Gallo2178 and Gallo2179 were measured in two independent studies, a combined study from Nijmegen and Detroit (93 CRC cases, 74 controls) and a replication data set including 576 cases and 576 controls from the Spanish multicenter multicase-control study (MCC-Spain). Logistic regression was applied to assess whether antibodies to FliC were associated with CRC and modified the association of antibodies to SGG proteins with CRC. Antibodies to FliC were associated with those to SGG Gallo2178 among CRC cases, resulting in an interaction in the association of antibodies to Gallo2178 with CRC (p = 0.007). This association was only present among individuals with high antibody responses to FliC (OR: 2.42, 95% CI: 1.45–4.06). In conclusion, our findings suggest that colorectal tumorigenesis could be accompanied by an impaired integrity of the epithelium that could result in associated increased antibody responses to bacterial proteins.
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Affiliation(s)
- Julia Butt
- Infection and Cancer Epidemiology Group, German Cancer Research Center (DKFZ), Heidelberg, Germany. .,Faculty of Biosciences, University of Heidelberg, Heidelberg, Germany.
| | - Nerea Fernández de Larrea
- Cancer and Environmental Epidemiology Unit, National Center for Epidemiology, Carlos III Institute of Health, Madrid, Spain.,Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Harold Tjalsma
- Independent researcher. Experimental work conducted at the Department of Laboratory Medicine, Radboud University Medical Centre (RadboudUMC), Nijmegen, The Netherlands
| | - Rian Roelofs
- Department of Laboratory Medicine, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud university medical centre (Radboudumc), Nijmegen, The Netherlands
| | - Ikuko Kato
- Departments of Oncology and Pathology, Wayne State University, Detroit, Michigan, USA
| | - Vicente Martín
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain.,The Research Group in Gene Environment and Health Interactions, University of León, León, Spain
| | - Beatriz Pérez-Gómez
- Cancer and Environmental Epidemiology Unit, National Center for Epidemiology, Carlos III Institute of Health, Madrid, Spain.,Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain.,Cardiovascular and Metabolic Diseases Unit, National Center for Epidemiology, Carlos III Institute of Health, Madrid, Spain
| | - Victor Moreno
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain.,Oncology Data Analytics Program, Catalan Institute of Oncology (ICO), Hospitalet de Llobregat, Barcelona, Spain.,Colorectal Cancer Group, ONCOBELL Program, Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain.,Department of Clinical Sciences, Faculty of Medicine, University of Barcelona, Barcelona, Spain
| | - Trinidad Dierssen-Sotos
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain.,University of Cantabria - IDIVAL, Santander, Spain
| | - Jesús Castilla
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain.,Public Health Institute of Navarra, IdiSNA- Navarra Institute for Health Research, Pamplona, Spain
| | - Guillermo Fernández-Tardón
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain.,IUOPA, University of Oviedo, Oviedo, Spain
| | - Pilar Amiano
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain.,Public Health Division of Gipuzkoa, BioDonostia Research institute, San Sebastian, Spain
| | - Dolores Salas
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain.,Cancer and Public Health Area, FISABIO - Public Health, Valencia, Spain.,General Directorate Public Health, Valencian Community, Valencia, Spain
| | - Juan Alguacil
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain.,Natural Resources, Health and Environment Research Center (RENSMA), University of Huelva, Huelva, Spain
| | - José Juan Jiménez-Moleón
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain.,Granada Health Research Institute (ibs.GRANADA), Granada, Spain.,Department of Preventive Medicine and Public Health, University of Granada, Granada, Spain
| | - José María Huerta
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain.,Department of Epidemiology, Murcia Regional Health Council, IMIB-Arrixaca, Murcia, Spain
| | - Silvia de Sanjosé
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain.,Cancer Epidemiology Research Program, Catalan Institute of Oncology-IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain.,PATH, Reproductive Health, Seattle, USA
| | - Rosa Del Campo
- Department of Microbiology, Ramón y Cajal Health Research Institute (IRYCIS), Hospital Universitario Ramón y Cajal, Madrid, Spain.,Spanish Network for Research in Infectious Diseases (REIPI), Madrid, Spain
| | - Manolis Kogevinas
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain.,ISGlobal, Barcelona, Spain.,IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain.,Pompeu Fabra University (UPF), Barcelona, Spain
| | - Marina Pollán
- Cancer and Environmental Epidemiology Unit, National Center for Epidemiology, Carlos III Institute of Health, Madrid, Spain.,Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Michael Pawlita
- Infection and Cancer Epidemiology Group, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Tim Waterboer
- Infection and Cancer Epidemiology Group, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Annemarie Boleij
- Department of Pathology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud university medical centre (Radboudumc), Nijmegen, The Netherlands
| | - Nuria Aragonés
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain.,Epidemiology Section, Public Health Division, Department of Health of Madrid, Madrid, Spain
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21
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Jans C, Boleij A. The Road to Infection: Host-Microbe Interactions Defining the Pathogenicity of Streptococcus bovis/Streptococcus equinus Complex Members. Front Microbiol 2018; 9:603. [PMID: 29692760 PMCID: PMC5902542 DOI: 10.3389/fmicb.2018.00603] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 03/15/2018] [Indexed: 12/17/2022] Open
Abstract
The Streptococcus bovis/Streptococcus equinus complex (SBSEC) comprises several species inhabiting the animal and human gastrointestinal tract (GIT). They match the pathobiont description, are potential zoonotic agents and technological organisms in fermented foods. SBSEC members are associated with multiple diseases in humans and animals including ruminal acidosis, infective endocarditis (IE) and colorectal cancer (CRC). Therefore, this review aims to re-evaluate adhesion and colonization abilities of SBSEC members of animal, human and food origin paired with genomic and functional host-microbe interaction data on their road from colonization to infection. SBSEC seem to be a marginal population during GIT symbiosis that can proliferate as opportunistic pathogens. Risk factors for human colonization are considered living in rural areas and animal-feces contact. Niche adaptation plays a pivotal role where Streptococcus gallolyticus subsp. gallolyticus (SGG) retained the ability to proliferate in various environments. Other SBSEC members have undergone genome reduction and niche-specific gene gain to yield important commensal, pathobiont and technological species. Selective colonization of CRC tissue is suggested for SGG, possibly related to increased adhesion to cancerous cell types featuring enhanced collagen IV accessibility. SGG can colonize, proliferate and may shape the tumor microenvironment to their benefit by tumor promotion upon initial neoplasia development. Bacteria cell surface structures including lipotheichoic acids, capsular polysaccharides and pilus loci (pil1, pil2, and pil3) govern adhesion. Only human blood-derived SGG contain complete pilus loci and other disease-associated surface proteins. Rumen or feces-derived SGG and other SBSEC members lack or harbor mutated pili. Pili also contribute to binding to fibrinogen upon invasion and translocation of cells from the GIT into the blood system, subsequent immune evasion, human contact system activation and collagen-I-binding on damaged heart valves. Only SGG carrying complete pilus loci seem to have highest IE potential in humans with significant links between SGG bacteremia/IE and underlying diseases including CRC. Other SBSEC host-microbe combinations might rely on currently unknown mechanisms. Comparative genome data of blood, commensal and food isolates are limited but required to elucidate the role of pili and other virulence factors, understand pathogenicity mechanisms, host specificity and estimate health risks for animals, humans and food alike.
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Affiliation(s)
- Christoph Jans
- Laboratory of Food Biotechnology, Institute of Food Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Annemarie Boleij
- Department of Pathology, Radboud Institute for Molecular Life Sciences, Radboudumc, Nijmegen, Netherlands
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22
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Dejea CM, Fathi P, Craig JM, Boleij A, Taddese R, Geis AL, Wu X, DeStefano Shields CE, Hechenbleikner EM, Huso DL, Anders RA, Giardiello FM, Wick EC, Wang H, Wu S, Pardoll DM, Housseau F, Sears CL. Patients with familial adenomatous polyposis harbor colonic biofilms containing tumorigenic bacteria. Science 2018; 359:592-597. [PMID: 29420293 PMCID: PMC5881113 DOI: 10.1126/science.aah3648] [Citation(s) in RCA: 627] [Impact Index Per Article: 104.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 09/28/2017] [Accepted: 12/28/2017] [Indexed: 12/23/2022]
Abstract
Individuals with sporadic colorectal cancer (CRC) frequently harbor abnormalities in the composition of the gut microbiome; however, the microbiota associated with precancerous lesions in hereditary CRC remains largely unknown. We studied colonic mucosa of patients with familial adenomatous polyposis (FAP), who develop benign precursor lesions (polyps) early in life. We identified patchy bacterial biofilms composed predominately of Escherichia coli and Bacteroides fragilis Genes for colibactin (clbB) and Bacteroides fragilis toxin (bft), encoding secreted oncotoxins, were highly enriched in FAP patients' colonic mucosa compared to healthy individuals. Tumor-prone mice cocolonized with E. coli (expressing colibactin), and enterotoxigenic B. fragilis showed increased interleukin-17 in the colon and DNA damage in colonic epithelium with faster tumor onset and greater mortality, compared to mice with either bacterial strain alone. These data suggest an unexpected link between early neoplasia of the colon and tumorigenic bacteria.
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Affiliation(s)
- Christine M Dejea
- Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University, Baltimore, MD, USA
- Department of Oncology, Johns Hopkins University, Baltimore, MD, USA
| | - Payam Fathi
- Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University, Baltimore, MD, USA
- Department of Oncology, Johns Hopkins University, Baltimore, MD, USA
- Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - John M Craig
- Department of Environmental Health Sciences, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - Annemarie Boleij
- Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University, Baltimore, MD, USA
- Department of Pathology, Radboud University Medical Center, Postbus 9101, 6500 HB Nijmegen, Netherlands
| | - Rahwa Taddese
- Department of Pathology, Radboud University Medical Center, Postbus 9101, 6500 HB Nijmegen, Netherlands
| | - Abby L Geis
- Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University, Baltimore, MD, USA
- Department of Oncology, Johns Hopkins University, Baltimore, MD, USA
| | - Xinqun Wu
- Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University, Baltimore, MD, USA
- Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Christina E DeStefano Shields
- Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University, Baltimore, MD, USA
- Department of Oncology, Johns Hopkins University, Baltimore, MD, USA
| | | | - David L Huso
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University, Baltimore, MD, USA
| | - Robert A Anders
- Department of Pathology, Johns Hopkins University, Baltimore, MD, USA
| | - Francis M Giardiello
- Department of Oncology, Johns Hopkins University, Baltimore, MD, USA
- Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Elizabeth C Wick
- Department of Surgery, Johns Hopkins University, Baltimore, MD, USA
| | - Hao Wang
- Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University, Baltimore, MD, USA
- Department of Oncology, Johns Hopkins University, Baltimore, MD, USA
| | - Shaoguang Wu
- Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University, Baltimore, MD, USA
- Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Drew M Pardoll
- Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University, Baltimore, MD, USA
- Department of Oncology, Johns Hopkins University, Baltimore, MD, USA
| | - Franck Housseau
- Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University, Baltimore, MD, USA
- Department of Oncology, Johns Hopkins University, Baltimore, MD, USA
| | - Cynthia L Sears
- Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University, Baltimore, MD, USA.
- Department of Oncology, Johns Hopkins University, Baltimore, MD, USA
- Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
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23
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Couto Furtado Albuquerque M, van Herwaarden Y, Kortman GAM, Dutilh BE, Bisseling T, Boleij A. Preservation of bacterial DNA in 10-year-old guaiac FOBT cards and FIT tubes. J Clin Pathol 2017; 70:994-996. [PMID: 28830908 PMCID: PMC5749348 DOI: 10.1136/jclinpath-2017-204592] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 08/02/2017] [Accepted: 08/03/2017] [Indexed: 11/03/2022]
Affiliation(s)
| | | | - Guus A M Kortman
- Department of Laboratory Medicine, Radboudumc, Nijmegen, The Netherlands
| | - Bas E Dutilh
- Department of Theoretical Biology and Bioinformatics, Utrecht University, Utrecht, The Netherlands.,Center for Molecular and Biomolecular Informatics (CMBI), Radboudumc, Nijmegen, The Netherlands
| | - Tanya Bisseling
- Department of Gastroenterology, Radboudumc, Nijmegen, The Netherlands
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Butt J, Werner S, Willhauck-Fleckenstein M, Michel A, Waterboer T, Zörnig I, Boleij A, Dramsi S, Brenner H, Pawlita M. Serology ofStreptococcus gallolyticussubspeciesgallolyticusand its association with colorectal cancer and precursors. Int J Cancer 2017; 141:897-904. [DOI: 10.1002/ijc.30765] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Accepted: 04/20/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Julia Butt
- Division of Molecular Diagnostics of Oncogenic Infections; German Cancer Research Center (DKFZ); Heidelberg Germany
| | - Simone Werner
- Division of Clinical Epidemiology and Aging Research; German Cancer Research Center (DKFZ); Heidelberg Germany
| | | | - Angelika Michel
- Division of Molecular Diagnostics of Oncogenic Infections; German Cancer Research Center (DKFZ); Heidelberg Germany
| | - Tim Waterboer
- Division of Molecular Diagnostics of Oncogenic Infections; German Cancer Research Center (DKFZ); Heidelberg Germany
| | - Inka Zörnig
- Department of Medical Oncology; National Center for Tumor Diseases (NCT) and Heidelberg University Hospital; Heidelberg Germany
| | - Annemarie Boleij
- Department of Pathology; Radboud University Medical Center; Nijmegen The Netherlands
| | | | - Hermann Brenner
- Division of Clinical Epidemiology and Aging Research; German Cancer Research Center (DKFZ); Heidelberg Germany
| | - Michael Pawlita
- Division of Molecular Diagnostics of Oncogenic Infections; German Cancer Research Center (DKFZ); Heidelberg Germany
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25
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Corredoira J, Grau I, Garcia-Rodriguez JF, García-País MJ, Rabuñal R, Ardanuy C, García-Garrote F, Coira A, Alonso MP, Boleij A, Pallares R. Colorectal neoplasm in cases of Clostridium septicum and Streptococcus gallolyticus subsp. gallolyticus bacteraemia. Eur J Intern Med 2017; 41:68-73. [PMID: 28236516 DOI: 10.1016/j.ejim.2017.02.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 02/12/2017] [Accepted: 02/14/2017] [Indexed: 01/25/2023]
Abstract
BACKGROUND Bacteremia with Clostridium septicum (CS) and Streptococcus gallolyticus subsp. gallolyticus (SGG) have both been associated with colorectal neoplasms (CRN) and colonoscopic examination is advised, however the differences and similarities in colorectal findings are not well known. METHODS This is a multicenter, comparative study of patients with CS bacteremia [44 of 664 cases (6.6%) of Clostridium spp.] and SGG bacteremia [257 of 596 cases (44.2%) of S. bovis group], carried out in three hospitals from Spain. Clinical findings related to bacteremia and associated CRN were collected. RESULTS The main sources of infection were abdominal (77.7%) for CS bacteremia and endovascular (75%) for SGG bacteremia. CS bacteremia was more often associated with malignancies, (72.6% vs. 19.4%) and neutropenia (29.5% vs. 3.1%), and was more acute, with shock at presentation (63.6% vs. 3.9%) and higher 30-day mortality (47.7% vs. 9.7%) compared to SGG (P<0.05 for all). Both, patients with CS and SGG bacteremia often had concomitant CRN (43.1% vs. 49.8%) and most of them presented as occult CRN (73.7% vs. 91.4%; P=0.02). CS cases more often had invasive carcinomas (94.7% vs. 19.5%), location of CRN in the right colon (73.7% vs. 23.4%), larger tumor size (median 7 vs. 1.5cm), and a higher overall CRN related mortality rate (68.4% vs. 7.8%) compared to SGG cases (P<0.05 for all). CONCLUSIONS Both, CS and SGG bacteremia are associated with occult CRN. CS cases more often had advanced carcinomas than SGG cases, suggesting a distinct temporal association with CRN.
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Affiliation(s)
- Juan Corredoira
- Infectious Disease Unit and Microbiology Departments, Hospital Universitario Lucus Augusti, Lugo, Spain.
| | - Imma Grau
- Infectious Disease and Microbiology Departments, Hospital Bellvitge, Ciberes, Idibell, University of Barcelona, L'Hospitalet, Barcelona, Spain.
| | | | - María Jose García-País
- Infectious Disease Unit and Microbiology Departments, Hospital Universitario Lucus Augusti, Lugo, Spain.
| | - Ramón Rabuñal
- Infectious Disease Unit and Microbiology Departments, Hospital Universitario Lucus Augusti, Lugo, Spain.
| | - Carmen Ardanuy
- Infectious Disease and Microbiology Departments, Hospital Bellvitge, Ciberes, Idibell, University of Barcelona, L'Hospitalet, Barcelona, Spain.
| | - Fernando García-Garrote
- Infectious Disease Unit and Microbiology Departments, Hospital Universitario Lucus Augusti, Lugo, Spain.
| | - Amparo Coira
- Infectious Disease Unit and Microbiology Departments, Hospital Universitario Lucus Augusti, Lugo, Spain.
| | - Maria Pilar Alonso
- Infectious Disease Unit and Microbiology Departments, Hospital Universitario Lucus Augusti, Lugo, Spain.
| | - Annemarie Boleij
- Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands.
| | - Roman Pallares
- Infectious Disease and Microbiology Departments, Hospital Bellvitge, Ciberes, Idibell, University of Barcelona, L'Hospitalet, Barcelona, Spain.
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26
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Boleij A, Tack V, Taylor A, Kafatos G, Jenkins-Anderson S, Tembuyser L, Dequeker E, van Krieken JH. RAS testing practices and RAS mutation prevalence among patients with metastatic colorectal cancer: results from a Europe-wide survey of pathology centres. BMC Cancer 2016; 16:825. [PMID: 27784278 PMCID: PMC5080758 DOI: 10.1186/s12885-016-2810-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 09/23/2016] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Treatment options for patients with metastatic colorectal cancer (mCRC) include anti-epithelial growth factor therapies, which, in Europe, are indicated in patients with RAS wild-type tumours only and require prior mutation testing of "hot-spot" codons in exons 2, 3 and 4 of KRAS and NRAS. The aim of this study was to evaluate the implementation of RAS testing methods and estimate the RAS mutation prevalence in mCRC patients. METHODS Overall, 194 pathology laboratories were invited to complete an online survey. Participating laboratories were asked to provide information on their testing practices and aggregated RAS mutation data from 20 to 30 recently tested patients with mCRC. RESULTS A total of 96 (49.5 %) laboratories across 24 European countries completed the survey. All participants tested KRAS exon 2, codons 12 and 13. Seventy (72.9 %) laboratories reported complete testing of all RAS hot-spot codons, and three (3.1 %) reported only testing KRAS exon 2. Sixty-nine (71.9 %) laboratories reported testing >80 patients yearly for RAS mutation status. Testing was typically performed within the reporting institution (93.8 %, n = 90), at the request of a treating oncologist (89.5 %, n = 85); testing methodology varied by laboratory and by individual codon tested. For laboratory RAS testing, turnaround times were ≤10 working days for the majority of institutions (90.6 %, n = 87). The overall crude RAS mutation prevalence was 48.5 % (95 % confidence interval: 46.4-50.6) for laboratories testing all RAS hot-spot codons. Prevalence estimates varied significantly by primary tumour location, approximate number of patients tested yearly and indication given for RAS testing. CONCLUSION Our findings indicate a rapid uptake of RAS testing in the majority of European pathology laboratories.
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Affiliation(s)
- Annemarie Boleij
- Department of Pathology, Radboud University Medical Centre, Geert Grooteplein-Zuid 10, 6525 GA, Nijmegen, The Netherlands
| | - Véronique Tack
- Department of Public Health and Primary Care, University of Leuven, Herestraat 49, Box 602, 3000, Leuven, Belgium
| | - Aliki Taylor
- Centre for Observational Research, Amgen Ltd, 1 Uxbridge Business Park, Uxbridge, UB8 1DH, UK
| | - George Kafatos
- Centre for Observational Research, Amgen Ltd, 1 Uxbridge Business Park, Uxbridge, UB8 1DH, UK
| | | | - Lien Tembuyser
- Department of Public Health and Primary Care, University of Leuven, Herestraat 49, Box 602, 3000, Leuven, Belgium
| | - Els Dequeker
- Department of Public Health and Primary Care, University of Leuven, Herestraat 49, Box 602, 3000, Leuven, Belgium.
| | - J Han van Krieken
- Department of Pathology, Radboud University Medical Centre, Geert Grooteplein-Zuid 10, 6525 GA, Nijmegen, The Netherlands
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27
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Boleij A, Tops BBJ, Rombout PDM, Dequeker EM, Ligtenberg MJL, van Krieken JH. RAS testing in metastatic colorectal cancer: excellent reproducibility amongst 17 Dutch pathology centers. Oncotarget 2016; 6:15681-9. [PMID: 25944693 PMCID: PMC4558179 DOI: 10.18632/oncotarget.3804] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 03/18/2015] [Indexed: 11/25/2022] Open
Abstract
In 2013 the European Medicine Agency (EMA) restricted the indication for anti-EGFR targeted therapy to metastatic colorectal cancer (mCRC) with a wild-type RAS gene, increasing the need for reliable RAS mutation testing. We evaluated the completeness and reproducibility of RAS-testing in the Netherlands. From 17 laboratories, tumor DNA of the first 10 CRC cases tested in 2014 in routine clinical practice was re-tested by a reference laboratory using a custom next generation sequencing panel. In total, 171 CRC cases were re-evaluated for hotspot mutations in KRAS, NRAS and BRAF. Most laboratories had introduced complete RAS-testing (65%) and BRAF-testing (71%) by January 2014. The most employed method for all hotspot regions was Sanger sequencing (range 35.7 - 49.2%). The reference laboratory detected all mutations that had been found in the participating laboratories (n = 92), plus 10 additional mutations. This concerned three RAS and seven BRAF mutations that were missed due to incomplete testing of the participating laboratory. Overall, the concordance of tests performed by both the reference and participating laboratory was 100% (163/163; κ-static 1.0) for RAS and 100% (144/144; κ-static 1.0) for BRAF. Our study shows that RAS and BRAF mutations can be reproducibly assessed using a variety of testing methods.
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Affiliation(s)
- Annemarie Boleij
- Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Bastiaan B J Tops
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Paul D M Rombout
- Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Elizabeth M Dequeker
- Department of Public Health and Primary Care, Biomedical Quality Assurance Research Unit, KU Leuven - University of Leuven, Leuven, Belgium
| | - Marjolijn J L Ligtenberg
- Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands.,Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - J Han van Krieken
- Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands
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- C.J.M. van Noesel, Academic Medical Center (AMC), Department of Pathology, Amsterdam.,C.C. Scheidel-Jacobse (Technical specialist), J.A. Kummer (Pathologist/KMBP), P. Roepman (KMBP in training), St. Antonius Ziekenhuis, Department of Pathology, Nieuwegein.,C.F.M. Prinsen (KMBP), S.H.M. van den Berg-van Erp (Pathologist), Canisius Wilhelmina Ziekenhuis (CWZ), Department of Pathology, Nijmegen.,J.M.H.H. van Gorp, Diakonessenhuis, Laboratory for Pathology, Utrecht.,P.M. Nederlof, Dutch Cancer Institute (NKI), Amsterdam.,E. Caspers, St. Elisabeth Ziekenhuis, Department of Molecular Pathology, Tilburg.,W.N.M. Dinjens, E.C.W. Beerens, Erasmus MC, Department of Pathology, Molecular Diagnostics, Rotterdam.,N.A. 't Hart, Isala, Department of Pathology, Zwolle.,A.J.C. van den Brule, Jeroen Bosch Ziekenhuis, Molecular Diagnostics, 's-Hertogenbosch.,R. van der Geize (KMBP), S.A. Riemersma (Pathologist), Laboratory for Pathology Oost-Nederland (LABPON), Hengelo.,T. van Wezel (KMBP), H. Morreau (Pathologist), R. van Eijk (Technical specialist), Leiden University Medical Center (LUMC), Department of Pathology, Leiden.,J.W.M. Jeuken, Laboratory for Pathology and Medical Microbiology (PAMM), Eindhoven.,A. Dirkx, Pathan B.V., Molecular Diagnostics, Rotterdam.,M. Klomp, Rijnstate Ziekenhuis, Department of Pathology, Arnhem.,W.T.M van Blokland, University Medical Center (UMC) Utrecht, Molecular Pathology, Utrecht.,A. ter Elst (Technical specialist/KMBP in training), E. Schuuring (KMBP), A. Diepstra (Pathologist), University Medical Center Groningen (UMCG), Department of Pathology, Groningen.,D.A.M. Heideman (KMBP), N.C.T. van Grieken (Pathologist), D. Sie (Technical specialist), VU-University Medical Center (VUMC), Department of Pathology, Amsterdam
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28
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Butt J, Romero-Hernández B, Pérez-Gómez B, Willhauck-Fleckenstein M, Holzinger D, Martin V, Moreno V, Linares C, Dierssen-Sotos T, Barricarte A, Tardón A, Altzibar JM, Moreno-Osset E, Franco F, Requena RO, Huerta JM, Michel A, Waterboer T, Castaño-Vinyals G, Kogevinas M, Pollán M, Boleij A, de Sanjosé S, Del Campo R, Tjalsma H, Aragonés N, Pawlita M. Association of Streptococcus gallolyticus subspecies gallolyticus with colorectal cancer: Serological evidence. Int J Cancer 2015; 138:1670-9. [PMID: 26537841 DOI: 10.1002/ijc.29914] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 10/08/2015] [Accepted: 10/21/2015] [Indexed: 01/25/2023]
Abstract
The colonic opportunist Streptococcus gallolyticus subspecies gallolyticus (SGG) is potentially associated with colorectal cancer (CRC). Large-scale seroepidemiological data for SGG antibodies and their possible association with CRC is currently missing. Associations between CRC and antibody responses to SGG were examined in 576 CRC cases and 576 controls matched by sex, age and province from a population-based multicase-control project (MCC-Spain). MCC-Spain was conducted between 2008 and 2013 in 12 Spanish provinces. Antibody responses to recombinant affinity-purified SGG pilus proteins Gallo1569, 2039, 2178 and 2179 were analysed by multiplex serology. Polyomavirus (PyV) JC VP1 and PyV 6 VP1 proteins served as disease-specificity controls. In the control population, antibody responses to pilus proteins were mostly weak. Antibody responses to individual pilus proteins Gallo2039 (OR: 1.58, 95% CI: 1.09-2.28), Gallo2178 (OR: 1.58, 95% CI: 1.09-2.30) and Gallo2179 (OR: 1.45, 95% CI: 1.00-2.11) were significantly associated with CRC risk. The association was stronger for positivity to two or more pilus proteins of Gallo1569, Gallo2178 and Gallo2179 (OR:1.93, 95% CI: 1.04-3.56) and for double-positivity to Gallo2178 and Gallo2179 (OR: 3.54, 95% CI: 1.49-8.44). The association between SGG infection and CRC risk was stronger among individuals younger than 65 years. For the first time we demonstrated a statistically significant association of exposure to SGG antigens and CRC in a large seroepidemiological study. These results should stimulate further studies on the role of SGG in CRC pathogenesis.
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Affiliation(s)
- Julia Butt
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Beatriz Romero-Hernández
- Servicio De Microbiología, Hospital Universitario Ramón Y Cajal and Instituto Ramón Y Cajal De Investigaciones Sanitarias (IRYCIS), Madrid, Spain.,Red Española De Investigación En Patología Infecciosa (REIPI), Madrid, Spain
| | - Beatriz Pérez-Gómez
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Environmental and Cancer Epidemiology Unit, National Center of Epidemiology, Instituto De Salud Carlos III, Madrid, Spain.,Oncology and Hematology Area, IIS Puerta De Hierro, Cancer Epidemiology Research Group, Madrid, Spain
| | - Martina Willhauck-Fleckenstein
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Dana Holzinger
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Vicente Martin
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Universidad De León, León, Spain
| | - Victor Moreno
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Cancer Epidemiology Research Programme, IDIBELL, Institut Català D'oncologica L'hospitalet De Llobregat, Barcelona, Spain.,Department of Clinical Sciences, Faculty of Medicine, University of Barcelona, Barcelona, Spain
| | - Cristina Linares
- National School of Public Health, Instituto De Salud Carlos III, Madrid, Spain
| | - Trinidad Dierssen-Sotos
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,IDIVAL-University of Cantabria, Santander, Spain
| | - Aurelio Barricarte
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Navarra Public Health Institute, Pamplona, Spain.,Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
| | - Adonina Tardón
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,IUOPA, Universidad De Oviedo, Asturias, Spain
| | - Jone M Altzibar
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Public Health Division of Gipuzkoa, Biodonostia Research Institute, San Sebastian, Spain
| | - Eduardo Moreno-Osset
- Servicio De Medicina Digestiva, Hospital Univesitario Dr. Peset, Universidad De Valencia, Valencia, Spain
| | - Francisco Franco
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Centro De Investigación En Salud Y Medio Ambiente (CYSMA), Universidad De Huelva, Huelva, Spain.,Hospital General De Riotinto, Huelva, Spain
| | - Rocío Olmedo Requena
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Instituto De Investigación Biosanitaria De Granada (Ibs.GRANADA), Hospitales Universitarios De Granada/Universidad De Granada, Granada, Spain
| | - José María Huerta
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Department of Epidemiology, Murcia Regional Health Council, IMIB-Arrixaca, Murcia, Spain
| | - Angelika Michel
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Tim Waterboer
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Gemma Castaño-Vinyals
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.,IMIM (Hospital Del Mar Medical Research Institute), Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Manolis Kogevinas
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.,IMIM (Hospital Del Mar Medical Research Institute), Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,School of Public Health, Athens, Greece
| | - Marina Pollán
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Environmental and Cancer Epidemiology Unit, National Center of Epidemiology, Instituto De Salud Carlos III, Madrid, Spain.,Oncology and Hematology Area, IIS Puerta De Hierro, Cancer Epidemiology Research Group, Madrid, Spain
| | - Annemarie Boleij
- Department of Pathology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Silvia de Sanjosé
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Cancer Epidemiology Research Programme, IDIBELL, Institut Català D'oncologica L'hospitalet De Llobregat, Barcelona, Spain
| | - Rosa Del Campo
- Servicio De Microbiología, Hospital Universitario Ramón Y Cajal and Instituto Ramón Y Cajal De Investigaciones Sanitarias (IRYCIS), Madrid, Spain.,Red Española De Investigación En Patología Infecciosa (REIPI), Madrid, Spain
| | - Harold Tjalsma
- Department of Laboratory Medicine, Nijmegen Institute for Infection, Inflammation and Immunity (N4i) & Radboud University Centre for Oncology (RUCO), Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Nuria Aragonés
- CIBER Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain.,Environmental and Cancer Epidemiology Unit, National Center of Epidemiology, Instituto De Salud Carlos III, Madrid, Spain.,Oncology and Hematology Area, IIS Puerta De Hierro, Cancer Epidemiology Research Group, Madrid, Spain
| | - Michael Pawlita
- Division of Molecular Diagnostics of Oncogenic Infections, Infection, Inflammation and Cancer Program, German Cancer Research Center (DKFZ), Heidelberg, Germany
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Boleij A, Tembuyser L, Taylor A, Kafatos G, Jenkins-Anderson S, Tack V, Dequeker E, van Krieken H. PD-015 A survey on current RAS-mutation testing practices in Europe. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv234.14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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30
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Boleij A, Hechenbleikner EM, Goodwin AC, Badani R, Stein EM, Lazarev MG, Ellis B, Carroll KC, Albesiano E, Wick EC, Platz EA, Pardoll DM, Sears CL. The Bacteroides fragilis toxin gene is prevalent in the colon mucosa of colorectal cancer patients. Clin Infect Dis 2014; 60:208-15. [PMID: 25305284 DOI: 10.1093/cid/ciu787] [Citation(s) in RCA: 379] [Impact Index Per Article: 37.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Enterotoxigenic Bacteroides fragilis (ETBF) produces the Bacteroides fragilis toxin, which has been associated with acute diarrheal disease, inflammatory bowel disease, and colorectal cancer (CRC). ETBF induces colon carcinogenesis in experimental models. Previous human studies have demonstrated frequent asymptomatic fecal colonization with ETBF, but no study has investigated mucosal colonization that is expected to impact colon carcinogenesis. METHODS We compared the presence of the bft gene in mucosal samples from colorectal neoplasia patients (cases, n = 49) to a control group undergoing outpatient colonoscopy for CRC screening or diagnostic workup (controls, n = 49). Single bacterial colonies isolated anaerobically from mucosal colon tissue were tested for the bft gene with touch-down polymerase chain reaction. RESULTS The mucosa of cases was significantly more often bft-positive on left (85.7%) and right (91.7%) tumor and/or paired normal tissues compared with left and right control biopsies (53.1%; P = .033 and 55.5%; P = .04, respectively). Detection of bft was concordant in most paired mucosal samples from individual cases or controls (75% cases; 67% controls). There was a trend toward increased bft positivity in mucosa from late- vs early-stage CRC patients (100% vs 72.7%, respectively; P = .093). In contrast to ETBF diarrheal disease where bft-1 detection dominates, bft-2 was the most frequent toxin isotype identified in both cases and controls, whereas multiple bft isotypes were detected more frequently in cases (P ≤ .02). CONCLUSIONS The bft gene is associated with colorectal neoplasia, especially in late-stage CRC. Our results suggest that mucosal bft exposure is common and may be a risk factor for developing CRC.
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Affiliation(s)
| | | | | | | | | | | | - Brandon Ellis
- Department of Pathology, Johns Hopkins University School of Medicine
| | - Karen C Carroll
- Department of Pathology, Johns Hopkins University School of Medicine
| | | | | | - Elizabeth A Platz
- Department of Oncology Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Drew M Pardoll
- Department of Medicine Department of Oncology Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Cynthia L Sears
- Department of Medicine Department of Oncology Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
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ElRakaiby M, Dutilh BE, Rizkallah MR, Boleij A, Cole JN, Aziz RK. Pharmacomicrobiomics: the impact of human microbiome variations on systems pharmacology and personalized therapeutics. OMICS 2014; 18:402-14. [PMID: 24785449 DOI: 10.1089/omi.2014.0018] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The Human Microbiome Project (HMP) is a global initiative undertaken to identify and characterize the collection of human-associated microorganisms at multiple anatomic sites (skin, mouth, nose, colon, vagina), and to determine how intra-individual and inter-individual alterations in the microbiome influence human health, immunity, and different disease states. In this review article, we summarize the key findings and applications of the HMP that may impact pharmacology and personalized therapeutics. We propose a microbiome cloud model, reflecting the temporal and spatial uncertainty of defining an individual's microbiome composition, with examples of how intra-individual variations (such as age and mode of delivery) shape the microbiome structure. Additionally, we discuss how this microbiome cloud concept explains the difficulty to define a core human microbiome and to classify individuals according to their biome types. Detailed examples are presented on microbiome changes related to colorectal cancer, antibiotic administration, and pharmacomicrobiomics, or drug-microbiome interactions, highlighting how an improved understanding of the human microbiome, and alterations thereof, may lead to the development of novel therapeutic agents, the modification of antibiotic policies and implementation, and improved health outcomes. Finally, the prospects of a collaborative computational microbiome research initiative in Africa are discussed.
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Affiliation(s)
- Marwa ElRakaiby
- 1 Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University , Cairo, Egypt
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Kato I, Boleij A, Kortman GAM, Roelofs R, Djuric Z, Severson RK, Tjalsma H. Partial associations of dietary iron, smoking and intestinal bacteria with colorectal cancer risk. Nutr Cancer 2013; 65:169-77. [PMID: 23441604 DOI: 10.1080/01635581.2013.748922] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Smoking and high red meat intake have been associated with colorectal cancer (CRC) risk. Increased iron exposure may be a common factor, favoring the colonization of certain bacterial pathogens that preferentially grow in an iron-rich luminal environment. We analyzed the data from a population-based case-control study of CRC and measured antibody levels against flagelin of Salmonella (FliC), one of the irontrophic bacteria, in 2 independent blood collections. The risk of CRC synergistically increased by combined exposures to heme iron intake and pack-yr (PY) of cigarette smoking (P value for the interaction = 0.039 on the continuous scale). There was a marginally significant interaction between heme iron intake and PY in increasing FliC antibody in the U.S. control subjects (P = 0.055), although no iron or smoking data were available for Dutch samples. Furthermore, FliC antibody levels were significantly higher in patients with colorectal polyps and cancer than in controls in both Dutch (3.93 vs. 2.23) (P = 0.014) and U.S. samples (6.65 vs. 4.37) (P < 0.001). Potential roles of iron from cigarette smoking and dietary heme in CRC through altering irontrophic luminal bacterial population may warrant further investigation.
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Affiliation(s)
- Ikuko Kato
- Karmanos Cancer Institute, and Department of Pathology, Wayne State University School of Medicine, Detroit, Michigan 48201, USA.
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Boleij A, Dutilh BE, Kortman GAM, Roelofs R, Laarakkers CM, Engelke UF, Tjalsma H. Bacterial responses to a simulated colon tumor microenvironment. Mol Cell Proteomics 2012; 11:851-62. [PMID: 22713208 DOI: 10.1074/mcp.m112.019315] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
One of the few bacteria that have been consistently linked to colorectal cancer (CRC) is the opportunistic pathogen Streptococcus gallolyticus. Infections with this bacterium are generally regarded as an indicator for colonic malignancy, while the carriage rate of this bacterium in the healthy large intestine is relatively low. We speculated that the physiological changes accompanying the development of CRC might favor the colonization of this bacterium. To investigate whether colon tumor cells can support the survival of S. gallolyticus, this bacterium was grown in spent medium of malignant colonocytes to simulate the altered metabolic conditions in the CRC microenvironment. These in vitro simulations indicated that S. gallolyticus had a significant growth advantage in these spent media, which was not observed for other intestinal bacteria. Under these conditions, bacterial responses were profiled by proteome analysis and metabolic shifts were analyzed by (1)H-NMR-spectroscopy. In silico pathway analysis of the differentially expressed proteins and metabolite analysis indicated that this advantage resulted from the increased utilization of glucose, glucose derivates, and alanine. Together, these data suggest that tumor cell metabolites facilitate the survival of S. gallolyticus, favoring its local outgrowth and providing a possible explanation for the specific association of S. gallolyticus with colonic malignancy.
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Affiliation(s)
- Annemarie Boleij
- Department of Laboratory Medicine/830, Radboud University Medical Centre, 6500 HB Nijmegen, the Netherlands
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Tjalsma H, Boleij A. Subtyping of Streptococcus bovis group bacteria is needed to fully understand the clinical value of Streptococcus gallolyticus (S. bovis biotype I) infection as early sign of colonic malignancy. Int J Clin Pract 2012; 66:326. [PMID: 22340452 DOI: 10.1111/j.1742-1241.2011.02873.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Boleij A, Tjalsma H. Gut bacteria in health and disease: a survey on the interface between intestinal microbiology and colorectal cancer. Biol Rev Camb Philos Soc 2012; 87:701-30. [PMID: 22296522 DOI: 10.1111/j.1469-185x.2012.00218.x] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A healthy human body contains at least tenfold more bacterial cells than human cells and the most abundant and diverse microbial community resides in the intestinal tract. Intestinal health is not only maintained by the human intestine itself and by dietary factors, but is also largely supported by this resident microbial community. Conversely, however, a large body of evidence supports a relationship between bacteria, bacterial activities and human colorectal cancer. Symbiosis in this multifaceted organ is thus crucial to maintain a healthy balance within the host-diet-microbiota triangle and accordingly, changes in any of these three factors may drive a healthy situation into a state of disease. In this review, the factors that sustain health or drive this complex intestinal system into dysbiosis are discussed. Emphasis is on the role of the intestinal microbiota and related mechanisms that can drive the initiation and progression of sporadic colorectal cancer (CRC). These mechanisms comprise the induction of pro-inflammatory and pro-carcinogenic pathways in epithelial cells as well as the production of (geno)toxins and the conversion of pro-carcinogenic dietary factors into carcinogens. A thorough understanding of these processes will provide leads for future research and may ultimately aid in development of new strategies for CRC diagnosis and prevention.
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Affiliation(s)
- Annemarie Boleij
- Department of Laboratory Medicine, Nijmegen Institute for Infection, Inflammation and Immunity (N4i) & Radboud University Centre for Oncology (RUCO) of the Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500 HB Nijmegen, the Netherlands
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Boleij A, Roelofs R, Danne C, Bellais S, Dramsi S, Kato I, Tjalsma H. Selective antibody response to Streptococcus gallolyticus pilus proteins in colorectal cancer patients. Cancer Prev Res (Phila) 2011; 5:260-5. [PMID: 22012878 DOI: 10.1158/1940-6207.capr-11-0321] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Streptococcus gallolyticus subsp. gallolyticus (previously called Streptococcus bovis biotype I) infections have long been associated with colorectal cancer (CRC). This work aimed to investigate the CRC-associated humoral immune response to four pilus proteins of this bacterium by newly developed ELISAs. Pilus proteins are interesting diagnostic targets as they are the building blocks of pilin-like structures that mediate bacterial virulence and are readily exposed to the host immune system upon infection. The presence of serum antibodies against these pilus proteins was evaluated in Dutch and American populations. These analyses showed that an immune response to these antigens was specific for clinical S. gallolyticus subsp. gallolyticus infections, but that increased serum antibody titers to multiple pilus proteins in single individuals were rarely observed. However, a multiplex approach based on antibody titers against any of these four antigens resulted in assay sensitivities between 16% and 43% for the detection of early-stage CRC. Together these findings underscore the potential of a multi-antigen approach to complement diagnosis of S. gallolyticus subsp. gallolyticus-associated CRC.
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Affiliation(s)
- Annemarie Boleij
- Department of Laboratory Medicine, Nijmegen Institute for Infection, Inflammation and Immunity (N4i), Nijmegen, the Netherlands
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Boleij A, van Gelder MMHJ, Swinkels DW, Tjalsma H. Clinical Importance of Streptococcus gallolyticus infection among colorectal cancer patients: systematic review and meta-analysis. Clin Infect Dis 2011; 53:870-8. [PMID: 21960713 DOI: 10.1093/cid/cir609] [Citation(s) in RCA: 243] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Streptococcus bovis has long been associated with colorectal cancer (CRC). However, not all genospecies are as closely related to CRC. With this systematic review, we aim to increase the awareness of the association between S. bovis biotype I (Streptococcus gallolyticus) and CRC and urge for uniform molecular microbiological classification. METHODS In January 2011, the PubMed database was searched for all studies that investigated the association between S. bovis, infective endocarditis (IE), and CRC. A total of 191 studies were screened for eligibility and yielded 52 case reports and 31 case series, of which 11 were used for meta-analysis on the association between S. bovis biotype, IE, and adenomas/carcinomas (CRC). RESULTS Among the S. bovis-infected patients who underwent colonic evaluation, the median percentage of patients who had concomitant adenomas/carcinomas was 60% (interquartile range, 22%), which largely exceeds the disease rate reported in the general asymptomatic population. Meta-analysis showed that patients with S. bovis biotype I infection had a strongly increased risk of having CRC (pooled odds ratio [OR], 7.26; 95% confidence interval [CI], 3.94-13.36) and IE (pooled OR, 16.61; 95% CI, 8.85-31.16), compared with S. bovis biotype II-infected patients. Notably, CRC occurred more often among patients with S. bovis IE than among patients with S. bovis infection at other sites (pooled OR, 3.72; 95% CI, 2.03-6.81). CONCLUSIONS Our meta-analysis clearly indicates that S. bovis should no longer be regarded as a single species in clinical practice, because S. gallolyticus (S. bovis biotype I) infection, in particular, has an unambiguous association with CRC.
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Affiliation(s)
- Annemarie Boleij
- Department of Laboratory Medicine/830, Nijmegen Institute for Infection, Inflammation and Immunity (N4i), The Netherlands.
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Boleij A, Muytjens CMJ, Bukhari SI, Cayet N, Glaser P, Hermans PWM, Swinkels DW, Bolhuis A, Tjalsma H. Novel clues on the specific association of Streptococcus gallolyticus subsp gallolyticus with colorectal cancer. J Infect Dis 2011; 203:1101-9. [PMID: 21451000 DOI: 10.1093/infdis/jiq169] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND The prevalence of Streptococcus gallolyticus subsp gallolyticus ( Streptococcus bovis biotype I) endocarditis is in general low but very often linked to colorectal cancer. Therefore, this study aimed to reveal the virulence characteristics that distinguish this opportunistic pathogen from a panel of (closely related) intestinal bacteria. METHODS The route of infection was reconstructed in vitro with adhesion, invasion, and translocation assays on differentiated Caco-2 cells. Furthermore, cellular immune responses upon infection and bacterial biofilm formation were analyzed in a comparative manner. RESULTS S. gallolyticus subsp gallolyticus strains were demonstrated to have a relative low adhesiveness and could not internalize epithelial cells. However, these bacteria were uniquely able to paracellularly cross a differentiated epithelium without inducing epithelial interleukin 8 or 1β responses. Importantly, they had an outstanding ability to form biofilms on collagen-rich surfaces, which in vivo are found at damaged heart valves and (pre)cancerous sites with a displaced epithelium. CONCLUSIONS Together, these data show that S. gallolyticus subsp gallolyticus has a unique repertoire of virulence factors that facilitate infection through (pre)malignant colonic lesions and subsequently can provide this bacterium with a competitive advantage in (1) evading the innate immune system and (2) forming resistant vegetations at collagen-rich sites in susceptible patients with colorectal cancer.
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Affiliation(s)
- Annemarie Boleij
- Department of Laboratory Medicine, Nijmegen Institute for Infection, Inflammation and Immunity, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
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Marchesi JR, Dutilh BE, Hall N, Peters WHM, Roelofs R, Boleij A, Tjalsma H. Towards the human colorectal cancer microbiome. PLoS One 2011; 6:e20447. [PMID: 21647227 PMCID: PMC3101260 DOI: 10.1371/journal.pone.0020447] [Citation(s) in RCA: 396] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Accepted: 04/22/2011] [Indexed: 12/12/2022] Open
Abstract
Multiple factors drive the progression from healthy mucosa towards sporadic colorectal carcinomas and accumulating evidence associates intestinal bacteria with disease initiation and progression. Therefore, the aim of this study was to provide a first high-resolution map of colonic dysbiosis that is associated with human colorectal cancer (CRC). To this purpose, the microbiomes colonizing colon tumor tissue and adjacent non-malignant mucosa were compared by deep rRNA sequencing. The results revealed striking differences in microbial colonization patterns between these two sites. Although inter-individual colonization in CRC patients was variable, tumors consistently formed a niche for Coriobacteria and other proposed probiotic bacterial species, while potentially pathogenic Enterobacteria were underrepresented in tumor tissue. As the intestinal microbiota is generally stable during adult life, these findings suggest that CRC-associated physiological and metabolic changes recruit tumor-foraging commensal-like bacteria. These microbes thus have an apparent competitive advantage in the tumor microenvironment and thereby seem to replace pathogenic bacteria that may be implicated in CRC etiology. This first glimpse of the CRC microbiome provides an important step towards full understanding of the dynamic interplay between intestinal microbial ecology and sporadic CRC, which may provide important leads towards novel microbiome-related diagnostic tools and therapeutic interventions.
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Affiliation(s)
| | - Bas E. Dutilh
- Centre for Molecular and Biomolecular Informatics, Nijmegen Centre for
Molecular Life Sciences, Radboud University Nijmegen Medical Centre, Nijmegen,
The Netherlands
- Departments of Computer Science and Biology, San Diego State University,
San Diego, California, United States of America
| | - Neil Hall
- Centre for Genomic Research, School of Biological Sciences, University of
Liverpool, Liverpool, United Kingdom
| | - Wilbert H. M. Peters
- Department of Gastroenterology, Nijmegen Institute for Infection,
Inflammation and Immunity (N4i) & Radboud University Centre for Oncology
(RUCO) of the Radboud University Nijmegen Medical Centre, Nijmegen, The
Netherlands
| | - Rian Roelofs
- Department of Laboratory Medicine, Nijmegen Institute for Infection,
Inflammation and Immunity (N4i) & Radboud University Centre for Oncology
(RUCO) of the Radboud University Nijmegen Medical Centre, Nijmegen, The
Netherlands
| | - Annemarie Boleij
- Department of Laboratory Medicine, Nijmegen Institute for Infection,
Inflammation and Immunity (N4i) & Radboud University Centre for Oncology
(RUCO) of the Radboud University Nijmegen Medical Centre, Nijmegen, The
Netherlands
| | - Harold Tjalsma
- Department of Laboratory Medicine, Nijmegen Institute for Infection,
Inflammation and Immunity (N4i) & Radboud University Centre for Oncology
(RUCO) of the Radboud University Nijmegen Medical Centre, Nijmegen, The
Netherlands
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Boleij A, Roelofs R, Schaeps RMJ, Schülin T, Glaser P, Swinkels DW, Kato I, Tjalsma H. Increased exposure to bacterial antigen RpL7/L12 in early stage colorectal cancer patients. Cancer 2010; 116:4014-22. [PMID: 20564125 DOI: 10.1002/cncr.25212] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND Cancer 2010. (c) 2010 American Cancer Society. : Intestinal bacteria have long been implicated in colorectal cancer pathology, and many reports point to a close linkage between Streptococcus bovis biotype I (recently renamed Streptococcus gallolyticus) infections and tumors of the human colon. This work aims to investigate the humoral immune response to this bacterium during different stages of colorectal cancer. METHODS The presence of serum antibodies against S. bovis antigen RpL7/L12, previously assigned as a potential diagnostic antigen, was evaluated in Dutch (n = 209) and American (n = 112) populations using a newly developed enzyme-linked immunosorbent assay. RESULTS The analyses consistently showed that an immune response against this bacterial antigen was increased in polyp patients and stage I/II colorectal cancer patients as compared with asymptomatic individuals. This was not paralleled by increased antibody production to endotoxin, an intrinsic cell wall component of the majority of intestinal bacteria, which implies that the humoral immune response against RpL7/L12 is not a general phenomenon induced by the loss of colonic barrier function. Notably, increased anti-RpL7/L12 levels were not or were only mildly detected in late stage colorectal cancer patients having lymph node or distant metastasis. CONCLUSIONS Cancer 2010. (c) 2010 American Cancer Society. : These findings are indicative of an increased exposure to antigen RpL7/L12 during early stages of colon carcinogenesis and suggest that intestinal bacteria such as S. bovis constitute a risk factor for the progression of premalignant lesions into early stage carcinomas. Clearly, the current findings emphasize the necessity for further studies on the possible etiologic relationship between intestinal bacteria and human colorectal cancer.
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Affiliation(s)
- Annemarie Boleij
- Department of Laboratory Medicine (Clinical Chemistry), Nijmegen Institute for Infection, Inflammation, and Immunity, Radboud University Center for Oncology of the Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands
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