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Thompson RS, Bowers SJ, Vargas F, Hopkins S, Kelley T, Gonzalez A, Lowry CA, Dorrestein PC, Vitaterna MH, Turek FW, Knight R, Wright KP, Fleshner M. A Prebiotic Diet Containing Galactooligosaccharides and Polydextrose Produces Dynamic and Reproducible Changes in the Gut Microbial Ecosystem in Male Rats. Nutrients 2024; 16:1790. [PMID: 38892722 PMCID: PMC11175065 DOI: 10.3390/nu16111790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 05/30/2024] [Accepted: 06/04/2024] [Indexed: 06/21/2024] Open
Abstract
Despite substantial evidence supporting the efficacy of prebiotics for promoting host health and stress resilience, few experiments present evidence documenting the dynamic changes in microbial ecology and fecal microbially modified metabolites over time. Furthermore, the literature reports a lack of reproducible effects of prebiotics on specific bacteria and bacterial-modified metabolites. The current experiments examined whether consumption of diets enriched in prebiotics (galactooligosaccharides (GOS) and polydextrose (PDX)), compared to a control diet, would consistently impact the gut microbiome and microbially modified bile acids over time and between two research sites. Male Sprague Dawley rats were fed control or prebiotic diets for several weeks, and their gut microbiomes and metabolomes were examined using 16S rRNA gene sequencing and untargeted LC-MS/MS analysis. Dietary prebiotics altered the beta diversity, relative abundance of bacterial genera, and microbially modified bile acids over time. PICRUSt2 analyses identified four inferred functional metabolic pathways modified by the prebiotic diet. Correlational network analyses between inferred metabolic pathways and microbially modified bile acids revealed deoxycholic acid as a potential network hub. All these reported effects were consistent between the two research sites, supporting the conclusion that dietary prebiotics robustly changed the gut microbial ecosystem. Consistent with our previous work demonstrating that GOS/PDX reduces the negative impacts of stressor exposure, we propose that ingesting a diet enriched in prebiotics facilitates the development of a health-promoting gut microbial ecosystem.
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Affiliation(s)
- Robert S. Thompson
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; (R.S.T.); (T.K.); (C.A.L.); (K.P.W.J.)
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Samuel J. Bowers
- Department of Neurobiology, Northwestern University, Center for Sleep and Circadian Biology, Evanston, IL 60208, USA; (S.J.B.); (M.H.V.); (F.W.T.)
| | - Fernando Vargas
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA 92093, USA (P.C.D.)
| | - Shelby Hopkins
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; (R.S.T.); (T.K.); (C.A.L.); (K.P.W.J.)
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Tel Kelley
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; (R.S.T.); (T.K.); (C.A.L.); (K.P.W.J.)
| | - Antonio Gonzalez
- Department of Pediatrics, University of California San Diego, San Diego, CA 92093, USA (R.K.)
| | - Christopher A. Lowry
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; (R.S.T.); (T.K.); (C.A.L.); (K.P.W.J.)
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Pieter C. Dorrestein
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA 92093, USA (P.C.D.)
| | - Martha Hotz Vitaterna
- Department of Neurobiology, Northwestern University, Center for Sleep and Circadian Biology, Evanston, IL 60208, USA; (S.J.B.); (M.H.V.); (F.W.T.)
| | - Fred W. Turek
- Department of Neurobiology, Northwestern University, Center for Sleep and Circadian Biology, Evanston, IL 60208, USA; (S.J.B.); (M.H.V.); (F.W.T.)
| | - Rob Knight
- Department of Pediatrics, University of California San Diego, San Diego, CA 92093, USA (R.K.)
- Department of Computer Science and Engineering, University of California San Diego, San Diego, CA 92093, USA
- Center for Microbiome Innovation, University of California San Diego, San Diego, CA 92093, USA
| | - Kenneth P. Wright
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; (R.S.T.); (T.K.); (C.A.L.); (K.P.W.J.)
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Monika Fleshner
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA; (R.S.T.); (T.K.); (C.A.L.); (K.P.W.J.)
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO 80309, USA
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Liu L, Li Y, Zheng X, Huang R, Huang X, Zhao Y, Liu W, Lei Y, Li Q, Zhong Z, Zhao Z. Natural polysaccharides regulate intestinal microbiota for inhibiting colorectal cancer. Heliyon 2024; 10:e31514. [PMID: 38818184 PMCID: PMC11137569 DOI: 10.1016/j.heliyon.2024.e31514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 05/11/2024] [Accepted: 05/16/2024] [Indexed: 06/01/2024] Open
Abstract
The gastrointestinal tract is an important part of the human immune system. The gut microbiome, which constitutes a major component of the gastrointestinal tract, plays a crucial role in maintaining normal physiological functions and influences the development, diagnosis, and immunotherapy of colorectal cancer (CRC). Natural polysaccharides can be extracted from animals, plants, and traditional Chinese medicines. They serve as an essential energy source for the gut microbiome, promoting probiotic proliferation and regulating the intestinal microecological balance. Moreover, polysaccharides exhibit anti-tumor effects due to their immune regulatory functions and low toxicity. This review focuses on discussing these anti-tumor effects in CRC, along with improving gut microbiome dysbiosis and regulating the tumor immune microenvironment, providing evidence for effective therapeutic strategies against CRC.
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Affiliation(s)
- Lili Liu
- University of Health and Rehabilitation Sciences (Qingdao Central Medical Group), Qingdao, 266000, China
| | - Yinan Li
- University of Health and Rehabilitation Sciences (Qingdao Central Medical Group), Qingdao, 266000, China
| | - Xiaoting Zheng
- Macao Centre for Research and Development in Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, 999078, China
| | - Rong Huang
- Macao Centre for Research and Development in Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, 999078, China
- College of Chemistry and Pharmaceutical Sciences, National Joint Local Engineering Laboratory of Agricultural Bio-Pharmaceutical Laboratory, Qingdao, Agricultural University, Qingdao, 266109, China
| | - Xiaoli Huang
- College of Chemistry and Pharmaceutical Sciences, National Joint Local Engineering Laboratory of Agricultural Bio-Pharmaceutical Laboratory, Qingdao, Agricultural University, Qingdao, 266109, China
| | - Yonghui Zhao
- University of Health and Rehabilitation Sciences (Qingdao Central Medical Group), Qingdao, 266000, China
| | - Wenjing Liu
- College of Chemistry and Pharmaceutical Sciences, National Joint Local Engineering Laboratory of Agricultural Bio-Pharmaceutical Laboratory, Qingdao, Agricultural University, Qingdao, 266109, China
| | - Yanli Lei
- College of Chemistry and Pharmaceutical Sciences, National Joint Local Engineering Laboratory of Agricultural Bio-Pharmaceutical Laboratory, Qingdao, Agricultural University, Qingdao, 266109, China
| | - Qiu Li
- College of Chemistry and Pharmaceutical Sciences, National Joint Local Engineering Laboratory of Agricultural Bio-Pharmaceutical Laboratory, Qingdao, Agricultural University, Qingdao, 266109, China
| | - Zhangfeng Zhong
- Macao Centre for Research and Development in Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, 999078, China
| | - Ziyun Zhao
- University of Health and Rehabilitation Sciences (Qingdao Central Medical Group), Qingdao, 266000, China
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Hosseini M, Holcombe AO, Kovacs M, Zwart H, Katz DS, Holmes K. Group authorship, an excellent opportunity laced with ethical, legal and technical challenges. Account Res 2024:1-23. [PMID: 38445637 DOI: 10.1080/08989621.2024.2322557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
Group authorship (also known as corporate authorship, team authorship, consortium authorship) refers to attribution practices that use the name of a collective (be it team, group, project, corporation, or consortium) in the authorship byline. Data shows that group authorships are on the rise but thus far, in scholarly discussions about authorship, they have not gained much specific attention. Group authorship can minimize tensions within the group about authorship order and the criteria used for inclusion/exclusion of individual authors. However, current use of group authorships has drawbacks, such as ethical challenges associated with the attribution of credit and responsibilities, legal challenges regarding how copyrights are handled, and technical challenges related to the lack of persistent identifiers (PIDs), such as ORCID, for groups. We offer two recommendations: 1) Journals should develop and share context-specific and unambiguous guidelines for group authorship, for which they can use the four baseline requirements offered in this paper; 2) Using persistent identifiers for groups and consistent reporting of members' contributions should be facilitated through devising PIDs for groups and linking these to the ORCIDs of their individual contributors and the Digital Object Identifier (DOI) of the published item.
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Affiliation(s)
- Mohammad Hosseini
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Galter Health Sciences Library and Learning Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Alex O Holcombe
- School of Psychology, University of Sydney, Sydney, Australia
| | - Marton Kovacs
- Institute of Psychology, ELTE Eotvos Lorand University, Budapest, Hungary
- MNB Institute, John von Neumann University, Kecskemét, Hungary
| | - Hub Zwart
- Erasmus School of Philosophy, Erasmus University, Rotterdam, the Netherlands
| | - Daniel S Katz
- National Center for Supercomputing Applications, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Computer Science, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Electrical & Computer Engineering, University of Illinois Urbana-Champaign, Urbana, IL, USA
- School of Information Sciences, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Kristi Holmes
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Galter Health Sciences Library and Learning Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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Liu H, Xu X, Liang J, Wang J, Li Y. The relationship between Clostridium butyricum and colorectal cancer. J Cancer Res Ther 2022; 18:1855-1859. [PMID: 36647942 DOI: 10.4103/jcrt.jcrt_1565_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Gut microbiota dysbiosis is involved in intestinal diseases. The resident microorganisms in the digestive tract contribute to maintenance of gut homeostasis. Some bacterial species have been identified and are suspected to play a role in colorectal cancer (CRC). Many studies have found that Clostridium butyricum has a close relationship with CRC, and the mechanism is becoming increasingly clear. This review discusses the possible relationship between C. butyricum and CRC.
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Affiliation(s)
- Hairong Liu
- Department of Oncology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Shandong Lung Cancer Institute, Jinan, Shandong, China
| | - Xin Xu
- Shandong First Medical University, Shandong, China
| | - Jing Liang
- Department of Oncology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Shandong Lung Cancer Institute, Jinan, Shandong, China
| | - Jun Wang
- Department of Oncology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Shandong Lung Cancer Institute, Jinan, Shandong, China
| | - Yan Li
- Department of Oncology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Shandong Lung Cancer Institute, Jinan, Shandong, China
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5
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Errington TM, Denis A, Perfito N, Iorns E, Nosek BA. Challenges for assessing replicability in preclinical cancer biology. eLife 2021. [DOI: 10.10.7554/elife.67995] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
We conducted the Reproducibility Project: Cancer Biology to investigate the replicability of preclinical research in cancer biology. The initial aim of the project was to repeat 193 experiments from 53 high-impact papers, using an approach in which the experimental protocols and plans for data analysis had to be peer reviewed and accepted for publication before experimental work could begin. However, the various barriers and challenges we encountered while designing and conducting the experiments meant that we were only able to repeat 50 experiments from 23 papers. Here we report these barriers and challenges. First, many original papers failed to report key descriptive and inferential statistics: the data needed to compute effect sizes and conduct power analyses was publicly accessible for just 4 of 193 experiments. Moreover, despite contacting the authors of the original papers, we were unable to obtain these data for 68% of the experiments. Second, none of the 193 experiments were described in sufficient detail in the original paper to enable us to design protocols to repeat the experiments, so we had to seek clarifications from the original authors. While authors were extremely or very helpful for 41% of experiments, they were minimally helpful for 9% of experiments, and not at all helpful (or did not respond to us) for 32% of experiments. Third, once experimental work started, 67% of the peer-reviewed protocols required modifications to complete the research and just 41% of those modifications could be implemented. Cumulatively, these three factors limited the number of experiments that could be repeated. This experience draws attention to a basic and fundamental concern about replication – it is hard to assess whether reported findings are credible.
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Errington TM, Denis A, Perfito N, Iorns E, Nosek BA. Challenges for assessing replicability in preclinical cancer biology. eLife 2021; 10:67995. [PMID: 34874008 PMCID: PMC8651289 DOI: 10.7554/elife.67995] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 07/20/2021] [Indexed: 02/07/2023] Open
Abstract
We conducted the Reproducibility Project: Cancer Biology to investigate the replicability of preclinical research in cancer biology. The initial aim of the project was to repeat 193 experiments from 53 high-impact papers, using an approach in which the experimental protocols and plans for data analysis had to be peer reviewed and accepted for publication before experimental work could begin. However, the various barriers and challenges we encountered while designing and conducting the experiments meant that we were only able to repeat 50 experiments from 23 papers. Here we report these barriers and challenges. First, many original papers failed to report key descriptive and inferential statistics: the data needed to compute effect sizes and conduct power analyses was publicly accessible for just 4 of 193 experiments. Moreover, despite contacting the authors of the original papers, we were unable to obtain these data for 68% of the experiments. Second, none of the 193 experiments were described in sufficient detail in the original paper to enable us to design protocols to repeat the experiments, so we had to seek clarifications from the original authors. While authors were extremely or very helpful for 41% of experiments, they were minimally helpful for 9% of experiments, and not at all helpful (or did not respond to us) for 32% of experiments. Third, once experimental work started, 67% of the peer-reviewed protocols required modifications to complete the research and just 41% of those modifications could be implemented. Cumulatively, these three factors limited the number of experiments that could be repeated. This experience draws attention to a basic and fundamental concern about replication - it is hard to assess whether reported findings are credible.
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Affiliation(s)
| | | | | | | | - Brian A Nosek
- Center for Open Science, Charlottesville, United States.,University of Virginia, Charlottesville, United States
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Yang X, Guo Y, Chen C, Shao B, Zhao L, Zhou Q, Liu J, Wang G, Yuan W, Sun Z. Interaction between intestinal microbiota and tumour immunity in the tumour microenvironment. Immunology 2021; 164:476-493. [PMID: 34322877 PMCID: PMC8517597 DOI: 10.1111/imm.13397] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 07/18/2021] [Accepted: 07/20/2021] [Indexed: 11/27/2022] Open
Abstract
In recent years, an increasing number of studies have reported that intestinal microbiota have an important effect on tumour immunity by affecting the tumour microenvironment (TME). The intestinal microbiota are closely associated with various immune cells, such as T lymphocytes, natural killer cells (NK cells) and macrophages. Some bacteria, such as Akkermansia muciniphila (A. muciniphila) and Lactobacillus reuteri (L. reuteri), have been shown to improve the effect of tumour immunity. Furthermore, microbial imbalance, such as the increased abundance of Fusobacterium nucleatum (F. nucleatum) and Helicobacter hepaticus (H. hepaticus), generally causes tumour formation and progression. In addition, some microbiota also play important roles in tumour immunotherapy, especially PD-L1-related therapies. Therefore, what is the relationship between these processes and how do they affect each other? In this review, we summarize the interactions and corresponding mechanisms among the intestinal microbiota, immune system and TME to facilitate the research and development of new targeted drugs and provide new approaches to tumour therapy.
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Affiliation(s)
- Xiuxiu Yang
- Department of Colorectal SurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
- School of MedicineZhengzhou UniversityZhengzhouChina
- Academy of Medical SciencesZhengzhou UniversityZhengzhouChina
| | - Yaxin Guo
- Academy of Medical SciencesZhengzhou UniversityZhengzhouChina
- Department of Basic MedicalAcademy of Medical Sciences of Zhengzhou UniversityZhengzhouChina
- Henan Academy of Medical and Pharmaceutical SciencesZhengzhou UniversityZhengzhouChina
| | - Chen Chen
- Academy of Medical SciencesZhengzhou UniversityZhengzhouChina
- School of Life SciencesZhengzhou UniversityZhengzhouChina
| | - Bo Shao
- Department of Colorectal SurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
- Academy of Medical SciencesZhengzhou UniversityZhengzhouChina
| | - Luyang Zhao
- Academy of Medical SciencesZhengzhou UniversityZhengzhouChina
- Department of Basic MedicalAcademy of Medical Sciences of Zhengzhou UniversityZhengzhouChina
- Henan Academy of Medical and Pharmaceutical SciencesZhengzhou UniversityZhengzhouChina
| | - Quanbo Zhou
- Department of Colorectal SurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Jinbo Liu
- Department of Colorectal SurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Guixian Wang
- Department of Colorectal SurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Weitang Yuan
- Department of Colorectal SurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Zhenqiang Sun
- Department of Colorectal SurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
- Academy of Medical SciencesZhengzhou UniversityZhengzhouChina
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Das N, Das S. 'Author Contribution Details' and not 'Authorship Sequence' as a merit to determine credit: A need to relook at the current Indian practice. NATIONAL MEDICAL JOURNAL OF INDIA 2021; 33:24-30. [PMID: 33565483 DOI: 10.4103/0970-258x.308238] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The Medical Council of India (MCI) has made research publications in indexed medical journals an obligatory requirement for promotion of medical teachers. In 2015, MCI guidelines said the first and the second author would receive credit for a research paper. In 2017, the amended guidelines provided credit to the first and the corresponding authors instead. We reviewed the common types of authorship order in medical publications from across the world and noted that before the 1990s, corresponding authors were rarely acknowledged and were not considered more important than any of the co-authors. By 2016, the corresponding author was usually the first or the last author. With an increase in collaborative research globally, more and more papers are published with multiple first, last or corresponding authors. Some journals have revised their Instructions to Authors to acknowledge co-first authors equally. Since 2017, PubMed also displays equal contributors in the author byline while still allowing searches for 'First author' and 'Last author' supporting the 'first and last author emphasis'. However, most guidelines mention that the authorship order is a collective decision of the authors. Any association between authorship sequence and credit for an article is debatable. Some journals allow or even insist on authorship statements to explain each contributor's role. Standardized vocabularies and taxonomies such as the Contributor Roles Taxonomy (CRediT) system can highlight contributions of individual authors. Some suggest doing away with the authorship order altogether. Readers and assessors should look at the 'author contribution details' rather than the 'authorship order' before drawing any conclusions about contributions of each author.
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Tian T, Zhao Y, Yang Y, Wang T, Jin S, Guo J, Liu Z. The protective role of short-chain fatty acids acting as signal molecules in chemotherapy- or radiation-induced intestinal inflammation. Am J Cancer Res 2020; 10:3508-3531. [PMID: 33294252 PMCID: PMC7716145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 10/13/2020] [Indexed: 06/12/2023] Open
Abstract
A compelling set of links between chemotherapy- or radiation-induced intestinal inflammation and microbial dysbiosis has emerged. It is the proportional imbalance between pathogenic and beneficial bacteria that aggravates intestinal mucositis. Bacteria that ferment fibers and produce short-chain fatty acids (SCFAs), (such as acetate, propionate, and butyrate) are typically reduced in the mucosa and feces of patients undergoing cancer therapy. In contrast, increasing lipopolysaccharide-producing bacteria result in proinflammatory events by interacting with Toll-like receptors. A collective acceptance is that bacterial metabolites are critical in recovering intestinal homeostasis. We herein review evidence supporting the positive roles carried out by SCFAs. SCFAs, acting as signaling molecules, directly activate G-coupled-receptors and inhibit histone deacetylases. Thus, SCFAs are able to strengthen the gut barrier and regulate immunomodulatory functions. Furthermore, it is possible to reverse intestinal microbial dysbiosis and subsequently suppress the secretion of proinflammatory cytokines by directly applying SCFA-producing bacteria. In addition, anticancer effects of SCFAs have proved in the colorectal cancer. In this review, we discuss microbial dysbiosis and its impact on chemotherapy- or radiation-induced intestinal mucositis. Moreover, we summarize the mechanisms of SCFA production and its effects on intestinal mucositis. This review suggests the therapeutic potential of SCFAs for the management of chemotherapy- or radiation-induced intestinal inflammation.
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Affiliation(s)
- Tian Tian
- Department of Radiation Oncology, The Second Affiliated Hospital of Jilin UniversityChangchun 130041, China
| | - Yangzhi Zhao
- Department of Hematology, The First Hospital of Jilin UniversityChangchun 130021, China
| | - Yi Yang
- Department of Radiation Oncology, The Second Affiliated Hospital of Jilin UniversityChangchun 130041, China
| | - Tiejun Wang
- Department of Radiation Oncology, The Second Affiliated Hospital of Jilin UniversityChangchun 130041, China
| | - Shunzi Jin
- NHC Key Laboratory of Radiobiology, Jilin UniversityChangchun 130021, China
| | - Jie Guo
- Department of Radiation Oncology, The Second Affiliated Hospital of Jilin UniversityChangchun 130041, China
| | - Zhongshan Liu
- Department of Radiation Oncology, The Second Affiliated Hospital of Jilin UniversityChangchun 130041, China
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10
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The microbiome in inflammatory bowel diseases: from pathogenesis to therapy. Protein Cell 2020; 12:331-345. [PMID: 32601832 PMCID: PMC8106558 DOI: 10.1007/s13238-020-00745-3] [Citation(s) in RCA: 121] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 05/30/2020] [Indexed: 02/08/2023] Open
Abstract
Inflammatory bowel disease (IBD) has become a global disease with accelerating incidence worldwide in the 21st century while its accurate etiology remains unclear. In the past decade, gut microbiota dysbiosis has consistently been associated with IBD. Although many IBD-associated dysbiosis have not been proven to be a cause or an effect of IBD, it is often hypothesized that at least some of alteration in microbiome is protective or causative. In this article, we selectively reviewed the hypothesis supported by both association studies in human and pathogenesis studies in biological models. Specifically, we reviewed the potential protective bacterial pathways and species against IBD, as well as the potential causative bacterial pathways and species of IBD. We also reviewed the potential roles of some members of mycobiome and virome in IBD. Lastly, we covered the current status of therapeutic approaches targeting microbiome, which is a promising strategy to alleviate and cure this inflammatory disease.
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11
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Wass MN, Ray L, Michaelis M. Understanding of researcher behavior is required to improve data reliability. Gigascience 2019; 8:giz017. [PMID: 30715291 PMCID: PMC6528747 DOI: 10.1093/gigascience/giz017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 01/20/2019] [Accepted: 01/25/2019] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND A lack of data reproducibility ("reproducibility crisis") has been extensively debated across many academic disciplines. RESULTS Although a reproducibility crisis is widely perceived, conclusive data on the scale of the problem and the underlying reasons are largely lacking. The debate is primarily focused on methodological issues. However, examples such as the use of misidentified cell lines illustrate that the availability of reliable methods does not guarantee good practice. Moreover, research is often characterized by a lack of established methods. Despite the crucial importance of researcher conduct, research and conclusive data on the determinants of researcher behavior are widely missing. CONCLUSION Meta-research that establishes an understanding of the factors that determine researcher behavior is urgently needed. This knowledge can then be used to implement and iteratively improve measures that incentivize researchers to apply the highest standards, resulting in high-quality data.
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Affiliation(s)
- Mark N Wass
- Industrial Biotechnology Centre and School of Biosciences, University of Kent, Canterbury, CT2 7NJ, UK
| | - Larry Ray
- School of Social Policy, Sociology and Social Research, University of Kent, Canterbury, CT2 7NJ, UK
| | - Martin Michaelis
- Industrial Biotechnology Centre and School of Biosciences, University of Kent, Canterbury, CT2 7NJ, UK
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