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Li DH, Li ZW, Sun Q, Wang L, Ning SB. Lower fecal microbiota transplantation ameliorates ulcerative colitis by eliminating oral-derived Fusobacterium nucleatum and virulence factor. Gut Pathog 2024; 16:42. [PMID: 39118149 PMCID: PMC11311926 DOI: 10.1186/s13099-024-00633-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 07/17/2024] [Indexed: 08/10/2024] Open
Abstract
BACKGROUND Recently, the oral oncobacterium Fusobacterium nucleatum (F. nucleatum), has been linked with ulcerative colitis (UC). Here, we aim to investigate whether Fecal Microbiota Transplantation (FMT) can alleviate UC by restoring gut microbiota and eliminating oral-derived F. nucleatum and virulence factor fadA. METHOD C57BL/6J mice were randomly divided into a healthy control group (HC), Dextran Sulfate Sodium group (DSS), oral inoculation group (OR), upper FMT group (UFMT), and lower FMT group (LFMT). Disease activity index, body weight, survival rate, and histopathological scores were used to measure the severity of colitis. The function of the intestinal mucosal barrier was evaluated by performing immunohistochemical staining of the tight junction protein Occludin. Real-time PCR was used to assess the relative abundance of the nusG gene and the virulence gene fadA. Cytokine levels were detected by ELISA. Full-length sequencing of 16S rRNA was used to analyze the changes and composition of gut microbiota. FINDINGS Oral incubation of F. nucleatum further exacerbated the severity of colitis and gut dysbiosis. Peptostreptococcaceae, Enterococcaceae, and Escherichia coli were significantly enriched in OR mice. However, LFMT mice showed an obvious decrease in disease activity and were more effective in restoring gut microbiota and eliminating F. nucleatum than UFMT mice. Bacteroidota, Lachnospiraceae, and Prevotellaceae were mainly enriched bacteria in LFMT mice. In addition, Genera such as Lactobacillus, Allobaculum, and Bacteroidales were found negative correlation with TNF-α, IL-1β, and IL-6. Genera like Romboutsia, Escherichia Shigella, Enterococcus, and Clostridium were found positively correlated with TNF-α, IL-1β, and IL-6. CONCLUSIONS Oral incubation of F. nucleatum further exacerbates the severity and dysbiosis in DSS-induced colitis mice. Besides, lower tract FMT can ameliorate colitis by restoring the gut microbiota diversity and eliminating F. nucleatum and virulence factor fadA.
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Affiliation(s)
- Dong-Hao Li
- Department of Gastroenterology, Air Force Medical Center of Chinese People's Liberation Army, Beijing, China
| | - Zong-Wei Li
- Department of Gastroenterology, Air Force Medical Center of Chinese People's Liberation Army, Beijing, China
| | - Qi Sun
- Department of Gastroenterology, Air Force Medical Center of Chinese People's Liberation Army, Beijing, China
| | - Lei Wang
- Department of Gastroenterology, Air Force Medical Center of Chinese People's Liberation Army, Beijing, China
| | - Shou-Bin Ning
- Department of Gastroenterology, Air Force Medical Center of Chinese People's Liberation Army, Beijing, China.
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2
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Kunath BJ, De Rudder C, Laczny CC, Letellier E, Wilmes P. The oral-gut microbiome axis in health and disease. Nat Rev Microbiol 2024:10.1038/s41579-024-01075-5. [PMID: 39039286 DOI: 10.1038/s41579-024-01075-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/25/2024] [Indexed: 07/24/2024]
Abstract
The human body hosts trillions of microorganisms throughout many diverse habitats with different physico-chemical characteristics. Among them, the oral cavity and the gut harbour some of the most dense and diverse microbial communities. Although these two sites are physiologically distinct, they are directly connected and can influence each other in several ways. For example, oral microorganisms can reach and colonize the gastrointestinal tract, particularly in the context of gut dysbiosis. However, the mechanisms of colonization and the role that the oral microbiome plays in causing or exacerbating diseases in other organs have not yet been fully elucidated. Here, we describe recent advances in our understanding of how the oral and intestinal microbiota interplay in relation to their impact on human health and disease.
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Affiliation(s)
- Benoit J Kunath
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg.
| | - Charlotte De Rudder
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Cedric C Laczny
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Elisabeth Letellier
- Department of Life Sciences and Medicine, Faculty of Science, Technology and Medicine, University of Luxembourg, Belvaux, Luxembourg
| | - Paul Wilmes
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg.
- Department of Life Sciences and Medicine, Faculty of Science, Technology and Medicine, University of Luxembourg, Belvaux, Luxembourg.
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3
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Montrose JA, Kurada S, Fischer M. Current and future microbiome-based therapies in inflammatory bowel disease. Curr Opin Gastroenterol 2024; 40:258-267. [PMID: 38841848 DOI: 10.1097/mog.0000000000001027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
PURPOSE OF REVIEW The role of the microbiome and dysbiosis is increasingly recognized in the pathogenesis of inflammatory bowel disease (IBD). Intestinal microbiota transplant (IMT), previously termed fecal microbiota transplant has demonstrated efficacy in restoring a healthy microbiome and promoting gut health in recurrent Clostridioides difficile infection. Several randomized trials (RCTs) highlighted IMT's potential in treating ulcerative colitis, while smaller studies reported on its application in managing Crohn's disease and pouchitis. RECENT FINDINGS This review delves into the current understanding of dysbiosis in IBD, highlighting the distinctions in the microbiota of patients with IBD compared to healthy controls. It explores the mechanisms by which IMT can restore a healthy microbiome and provides a focused analysis of recent RCTs using IMT for inducing and maintaining remission in IBD. Lastly, we discuss the current knowledge gaps that limit its widespread use. SUMMARY The body of evidence supporting the use of IMT in IBD is growing. The lack of a standardized protocol impedes its application beyond clinical trials. Further research is needed to identify patient profile and disease phenotypes that benefit from IMT, to delineate key donor characteristics, optimize the delivery route, dosage, and frequency.
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Affiliation(s)
| | - Satya Kurada
- Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Monika Fischer
- Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, Indiana, USA
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Chen M, Wei S, Wu X, Xiang Z, Li X, He H, Liao F, Wang X, Zhang J, Yu B, Dong W. 2'-Hydroxycinnamaldehyde Alleviates Intestinal Inflammation by Attenuating Intestinal Mucosal Barrier Damage Via Directly Inhibiting STAT3. Inflamm Bowel Dis 2024; 30:992-1008. [PMID: 38422244 PMCID: PMC11144992 DOI: 10.1093/ibd/izad283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Indexed: 03/02/2024]
Abstract
BACKGROUND The currently available clinical therapeutic drugs for ulcerative colitis (UC) are considered inadequate owing to certain limitations. There have been reports on the anti-inflammatory effects of 2'-hydroxycinnamaldehyde (HCA). However, whether HCA can improve UC is still unclear. Here, we aimed to investigate the pharmacological effects of HCA on UC and its underlying molecular mechanisms. METHODS The pharmacological effects of HCA were comprehensively investigated in 2 experimental setups: mice with dextran sulfate sodium (DSS)-induced colitis and lipopolysaccharide (LPS)-treated fetal human colon (FHC) cells. Furthermore, the interaction between HCA and signal transducer and activator of transcription 3 (STAT3) was investigated using molecular docking. The FHC cells with STAT3 knockdown or overexpression and mice with intestinal epithelium-specific STAT3 deletion (STAT3ΔIEC) were used to evaluate whether STAT3 mediated the pharmacological effects of HCA. RESULTS 2'-Hydroxycinnamaldehyde attenuated dysregulated expression of inflammatory cytokines in a dose-dependent manner while increasing the expression of tight junction proteins, reducing the apoptosis of intestinal epithelial cells, and effectively alleviating inflammation both in vivo and in vitro. 2'-Hydroxycinnamaldehyde bound directly to STAT3 and inhibited its activation. The modulation of STAT3 activation levels due to STAT3 knockdown or overexpression influenced the mitigating effects of HCA on colitis. Further analysis indicated that the remission effect of HCA was not observed in STAT3ΔIEC mice, indicating that STAT3 mediated the anti-inflammatory effects of HCA. CONCLUSIONS We present a novel finding that HCA reduces colitis severity by attenuating intestinal mucosal barrier damage via STAT3. This discovery holds promise as a potential new strategy to alleviate UC.
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Affiliation(s)
- Meilin Chen
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
- Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, China
| | - Shuchun Wei
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
- Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xiaohan Wu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
- Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zixuan Xiang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
- Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xiangyun Li
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
- Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, China
| | - Haodong He
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
- Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, China
| | - Fei Liao
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xiaoli Wang
- Department of Plastic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jixiang Zhang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Baoping Yu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Weiguo Dong
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
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Foppa C, Rizkala T, Repici A, Hassan C, Spinelli A. Microbiota and IBD: Current knowledge and future perspectives. Dig Liver Dis 2024; 56:911-922. [PMID: 38008696 DOI: 10.1016/j.dld.2023.11.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 10/18/2023] [Accepted: 11/09/2023] [Indexed: 11/28/2023]
Abstract
Inflammatory Bowel Disease (IBD) is a chronic relapsing-remitting disease with a remarkable increase in incidence worldwide and a substantial disease burden. Although the pathophysiology is not fully elucidated yet an aberrant immune reaction against the intestinal microbiota and the gut microbial dysbiosis have been identified to play a major role. The composition of gut microbiota in IBD patients is distinct from that of healthy individuals, with certain organisms predominating over others. Differences in the microbial dysbiosis have been also observed between Crohn Disease (CD) and Ulcerative Colitis (UC). A disruption of the microbiota's balance can lead to inflammation and intestinal damage. Microbiota composition in IBD can be affected both by endogenous (i.e., interaction with the immune system and intestinal epithelial cells) and exogenous (i.e., medications, surgery, diet) factors. The complex interplay between the gut microbiota and IBD is an area of great interest for understanding disease pathogenesis and developing new treatments. The purpose of this review is to summarize the latest evidence on the role of microbiota in IBD pathogenesis and to explore possible future areas of research.
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Affiliation(s)
- Caterina Foppa
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, 20090, Milan, Italy; IRCCS Humanitas Research Hospital, Division of Colon and Rectal Surgery, via Manzoni 56, Rozzano, 20089, Milan, Italy
| | - Tommy Rizkala
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, 20090, Milan, Italy
| | - Alessandro Repici
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, 20090, Milan, Italy; IRCCS Humanitas Research Hospital, Division of Gastroenterology and Digestive Endoscopy Unit, via Manzoni 56, Rozzano, 20089, Milan, Italy
| | - Cesare Hassan
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, 20090, Milan, Italy; IRCCS Humanitas Research Hospital, Division of Gastroenterology and Digestive Endoscopy Unit, via Manzoni 56, Rozzano, 20089, Milan, Italy
| | - Antonino Spinelli
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, 20090, Milan, Italy; IRCCS Humanitas Research Hospital, Division of Colon and Rectal Surgery, via Manzoni 56, Rozzano, 20089, Milan, Italy.
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Wu P, Bie M, Zhou J, Wang J, Zhao L. Periodontal pathogen Fusobacterium nucleatum infection accelerates hepatic steatosis in high-fat diet-fed ApoE knockout mice by inhibiting Nrf2/Keap1 signaling. J Periodontal Res 2024. [PMID: 38795023 DOI: 10.1111/jre.13278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 03/31/2024] [Accepted: 04/12/2024] [Indexed: 05/27/2024]
Abstract
AIMS This study sought to explore the impact of Fusobacterium nucleatum on hepatic steatosis in apolipoprotein E (ApoE) knockout (KO) mice induced by a high-fat diet (HFD) and elucidate the underlying mechanism. METHODS ApoE KO mice, on a HFD, received F. nucleatum oral inoculation every other day. After 24 weeks, body weight, liver weight, and liver index were assessed. Serum biochemistry and pro-inflammatory factors in serum and liver were analyzed. The histopathology of right maxilla and live were performed. Oil red O, immunohistochemistry, and immunofluorescence staining for the liver were conducted. Myeloperoxidase (MPO) activity, apoptosis, lipid reactive oxygen species (ROS), ROS, lipid peroxides, and hepatic lipids were also evaluated. Liver inflammation, fibrosis, de novo lipogenesis (DNL)-related molecule, and Nrf2/Keap1-related signaling molecule gene/protein expression were determined by real-time PCR (RT-PCR) and/or Western blot (WB) analysis. RESULTS HFD-fed ApoE KO mice infected by F. nucleatum demonstrated significant changes, including increased body and liver weight, elevated proinflammatory factors and lipids in serum and liver, as well as neutrophil infiltration, fibrosis, apoptosis, oxidative stress, and lipid peroxidation in the liver. Additionally, F. nucleatum stimulates hepatic lipid accumulation and activates de novo lipogenesis (DNL), while simultaneously suppressing the Nrf2/Keap1 antioxidant pathway. CONCLUSION In conclusion, our study reveals that oral inoculation of F. nucleatum might promote hepatic steatosis by inhibiting Nrf2/Keap1 pathway.
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Affiliation(s)
- Peiyao Wu
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Periodontics, West China School & Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Mengyao Bie
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Periodontics, West China School & Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jieyu Zhou
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Periodontics, West China School & Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jun Wang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Periodontics, West China School & Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Lei Zhao
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Periodontics, West China School & Hospital of Stomatology, Sichuan University, Chengdu, China
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7
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Williams SC, Garcet S, Hur H, Miura S, Gonzalez J, Navrazhina K, Yamamura-Murai M, Yamamura K, Li X, Frew J, Fischetti VA, Sela U, Krueger JG. Gram-negative anaerobes elicit a robust keratinocytes immune response with potential insights into HS pathogenesis. Exp Dermatol 2024; 33:e15087. [PMID: 38685821 DOI: 10.1111/exd.15087] [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: 01/11/2024] [Revised: 04/02/2024] [Accepted: 04/11/2024] [Indexed: 05/02/2024]
Abstract
Hidradenitis Suppurativa (HS) is a chronic autoinflammatory skin disease with activated keratinocytes, tunnel formation and a complex immune infiltrate in tissue. The HS microbiome is polymicrobial with an abundance of commensal gram-positive facultative (GPs) Staphylococcus species and gram-negative anaerobic (GNA) bacteria like Prevotella, Fusobacterium and Porphyromonas with increasing predominance of GNAs with disease severity. We sought to define the keratinocyte response to bacteria commonly isolated from HS lesions to probe pathogenic relationships between HS and the microbiome. Type strains of Prevotella nigrescens, Prevotella melaninogenica, Prevotella intermedia, Prevotella asaccharolytica, Fusobacterium nucleatum, as well as Staphylococcus aureus and the normal skin commensal Staphylococcus epidermidis were heat-killed and co-incubated with normal human keratinocytes. RNA was collected and analysed using RNAseq and RT-qPCR. The supernatant was collected from cell culture for protein quantification. Transcriptomic profiles between HS clinical samples and stimulated keratinocytes were compared. Co-staining of patient HS frozen sections was used to localize bacteria in lesions. A mouse intradermal injection model was used to investigate early immune recruitment. TLR4 and JAK inhibitors were used to investigate mechanistic avenues of bacterial response inhibition. GNAs, especially F. nucleatum, stimulated vastly higher CXCL8, IL17C, CCL20, IL6, TNF and IL36γ transcription in normal skin keratinocytes than the GPs S. epidermidis and S. aureus. Using RNAseq, we found that F. nucleatum (and Prevotella) strongly induced the IL-17 pathway in keratinocytes and overlapped with transcriptome profiles of HS patient clinical samples. Bacteria were juxtaposed to activated keratinocytes in vivo, and F. nucleatum strongly recruited murine neutrophil and macrophage migration. Both the TLR4 and pan-JAK inhibitors reduced cytokine production. Detailed transcriptomic profiling of healthy skin keratinocytes exposed to GNAs prevalent in HS revealed a potent, extensive inflammatory response vastly stronger than GPs. GNAs stimulated HS-relevant genes, including many genes in the IL-17 response pathway, and were significantly associated with HS tissue transcriptomes. The close association of activated keratinocytes with bacteria in HS lesions and innate infiltration in murine skin cemented GNA pathogenic potential. These novel mechanistic insights could drive future targeted therapies.
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Affiliation(s)
- Samuel C Williams
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, New York, USA
- The Rockefeller University-Memorial Sloan Kettering-Weill Cornell Medicine Tri-Institutional MD-PhD Program, New York, New York, USA
| | - Sandra Garcet
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, New York, USA
| | - Hong Hur
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, New York, USA
| | - Shunsuke Miura
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, New York, USA
| | - Juana Gonzalez
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, New York, USA
| | - Kristina Navrazhina
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, New York, USA
- The Rockefeller University-Memorial Sloan Kettering-Weill Cornell Medicine Tri-Institutional MD-PhD Program, New York, New York, USA
| | - Mika Yamamura-Murai
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, New York, USA
| | - Kazuhiko Yamamura
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, New York, USA
| | - Xuan Li
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, New York, USA
| | - John Frew
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, New York, USA
- Department of Dermatology, Liverpool Hospital, University of New South Wales, Sydney, New South Wales, Australia
| | - Vincent A Fischetti
- Laboratory of Bacterial Pathogenesis and Immunology, The Rockefeller University, New York, New York, USA
| | - Uri Sela
- Laboratory of Bacterial Pathogenesis and Immunology, The Rockefeller University, New York, New York, USA
| | - James G Krueger
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, New York, USA
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Liu Z, Zhang D, Chen S. Unveiling the gastric microbiota: implications for gastric carcinogenesis, immune responses, and clinical prospects. J Exp Clin Cancer Res 2024; 43:118. [PMID: 38641815 PMCID: PMC11027554 DOI: 10.1186/s13046-024-03034-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 03/29/2024] [Indexed: 04/21/2024] Open
Abstract
High-throughput sequencing has ushered in a paradigm shift in gastric microbiota, breaking the stereotype that the stomach is hostile to microorganisms beyond H. pylori. Recent attention directed toward the composition and functionality of this 'community' has shed light on its potential relevance in cancer. The microbial composition in the stomach of health displays host specificity which changes throughout a person's lifespan and is subject to both external and internal factors. Distinctive alterations in gastric microbiome signature are discernible at different stages of gastric precancerous lesions and malignancy. The robust microbes that dominate in gastric malignant tissue are intricately implicated in gastric cancer susceptibility, carcinogenesis, and the modulation of immunosurveillance and immune escape. These revelations offer fresh avenues for utilizing gastric microbiota as predictive biomarkers in clinical settings. Furthermore, inter-individual microbiota variations partially account for differential responses to cancer immunotherapy. In this review, we summarize current literature on the influence of the gastric microbiota on gastric carcinogenesis, anti-tumor immunity and immunotherapy, providing insights into potential clinical applications.
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Affiliation(s)
- Zhiyi Liu
- Department of Oncology, Xin Hua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092, China
| | - Dachuan Zhang
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of the Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Siyu Chen
- Department of Oncology, Xin Hua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092, China.
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9
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Li O, Li X, He J. Knockdown of TOP2A suppresses IL-17 signaling pathway and alleviates the progression of ulcerative colitis. Immun Inflamm Dis 2024; 12:e1207. [PMID: 38661103 PMCID: PMC11044219 DOI: 10.1002/iid3.1207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 02/05/2024] [Accepted: 02/15/2024] [Indexed: 04/26/2024] Open
Abstract
BACKGROUND Ulcerative colitis (UC) is a chronic inflammatory disease of the colonic mucosa, with a gradually increasing incidence. Therefore, it is necessary to actively seek targets for the treatment of UC. METHODS Common differentially expressed genes (DEGs) were screened from two microarray data sets related to UC. Protein-protein interaction network was constructed to find the hub genes. The UC mouse model and cell model were induced by dextran sulfate sodium (DSS). The pathological changes of colon tissue were observed by hematoxylin-eosin staining. Immunohistochemistry and immunofluorescence were performed to detect the expressions of Ki67 and Claudin-1. The performance of mice was observed by disease activity index (DAI). The effect of TOP2A on proliferation, inflammation, oxidative stress, and interleukin-17 (IL-17) signaling pathway in UC model was measured by cell counting kit-8, enzyme-linked immunosorbent assay, and western blot. RESULTS Through bioinformatics analysis, 295 common DEGs were screened, and the hub gene TOP2A was selected. In UC model, there was obvious inflammatory cell infiltration in the colon and less goblet cells, while si-TOP2A lessened it. More Ki67 positive cells and less Claudin-1 positive cells were observed in UC model mice. Furthermore, knockdown of TOP2A increased the body weight and colon length of UC mice, while the DAI was decreased. Through in vivo and in vitro experiments, knockdown of TOP2A also inhibited inflammation and IL-17 signaling pathway, and promoted proliferation in DSS-induced NCM460 cells. CONCLUSION Knockdown of TOP2A alleviated the progression of UC by suppressing inflammation and inhibited IL-17 signaling pathway.
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Affiliation(s)
- Ou Li
- Department of ProctologyZhuJiang Hospital of Southern Medical UniversityGuangzhouGuangdongChina
| | - Xuexiao Li
- Department of ProctologyZhuJiang Hospital of Southern Medical UniversityGuangzhouGuangdongChina
| | - Jianping He
- Department of ProctologyZhuJiang Hospital of Southern Medical UniversityGuangzhouGuangdongChina
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10
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Zeng X, Li J, Wang X, Liu L, Shen S, Li N, Wang Z, Yuan Y, Yue T. Regulation of Gut Microbiota and Microbial Metabolome of Kefir Supernatant against Fusobacterium nucleatum and DSS-Coinduced Colitis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:3536-3548. [PMID: 38346349 DOI: 10.1021/acs.jafc.3c08050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
The aim of this study was to investigate the intervention effect of kefir supernatant (KS) on the initiation and progression of an ulcerative colitis (UC) murine model. We established an UC murine model by orally administrating with 109 CFUs of Fusobacterium nucleatum for 3 weeks and 3% dextran sulfate sodium (DSS) treatment in the third week. KS was used to intervene in this colitis model. Our results showed that KS supplementation ameliorated the symptoms, restrained the secretion of pro-inflammatory cytokines (TNF-α, IL-6, and IL-17F), promoted the release of anti-inflammatory cytokines (IL-4 and IL-10), and ameliorated oxidative stress. Furthermore, the increased number of goblet cells and upregulated expression of MUC2, occludin and claudin-1 indicated that the colon barrier was protected by KS. Additionally, KS supplementation mitigated gut microbiota dysbiosis in the UC murine model, leading to an increase in the abundance of Blautia and Akkermansia and a decrease in the level of Bacteroides. The altered gut microbiota also affected colon metabolism, with differential metabolites mainly associated with the biosynthesis of the l-arginine pathway. This study revealed that KS supplementation restored the community structure of gut microbiota, altered the biosynthesis of l-arginine, and thereby modulated the process of colonic inflammation.
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Affiliation(s)
- Xuejun Zeng
- College of Food Science and Technology, Northwest University, Xi'an 710069, China
- College of Food Science and Engineering, Northwest A & F University, Yangling, Xianyang 712100, China
| | - Jiahui Li
- College of Food Science and Engineering, Northwest A & F University, Yangling, Xianyang 712100, China
| | - Xin Wang
- College of Health Management, Shangluo University, Shangluo 726000, China
| | - Ling Liu
- College of Food Science and Engineering, Northwest A & F University, Yangling, Xianyang 712100, China
| | - Shiqi Shen
- College of Food Science and Engineering, Northwest A & F University, Yangling, Xianyang 712100, China
| | - Nanyang Li
- College of Food Science and Engineering, Northwest A & F University, Yangling, Xianyang 712100, China
| | - Zhouli Wang
- College of Food Science and Engineering, Northwest A & F University, Yangling, Xianyang 712100, China
| | - Yahong Yuan
- College of Food Science and Technology, Northwest University, Xi'an 710069, China
- College of Food Science and Engineering, Northwest A & F University, Yangling, Xianyang 712100, China
| | - Tianli Yue
- College of Food Science and Technology, Northwest University, Xi'an 710069, China
- College of Food Science and Engineering, Northwest A & F University, Yangling, Xianyang 712100, China
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Yamazaki K, Kamada N. Exploring the oral-gut linkage: Interrelationship between oral and systemic diseases. Mucosal Immunol 2024; 17:147-153. [PMID: 38007003 PMCID: PMC11222583 DOI: 10.1016/j.mucimm.2023.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 11/08/2023] [Accepted: 11/20/2023] [Indexed: 11/27/2023]
Abstract
The oral cavity harbors a diverse microbiota that plays a significant role in maintaining homeostasis. Disruption of this balance can lead to various oral diseases, including periodontitis. Accumulating evidence suggests a connection between periodontitis and extra-oral diseases such as cardiovascular disease, rheumatoid arthritis, obesity, and diabetes. During periodontitis, oral bacteria enter the bloodstream directly, impacting extra-oral organs. Furthermore, recent studies have uncovered another pathway, the direct oral-gut axis, where oral bacteria translocate to the gut through an enteral route, influencing gut microbiota and metabolism. Oral pathobionts associated with exacerbation of periodontal disease are implicated in gut pathology, including inflammatory bowel disease and colorectal cancer through ectopic gut colonization. Furthermore, oral bacteria can provoke host immune responses, leading to colitis and other inflammatory diseases. Conversely, mechanisms by which extra-oral conditions exacerbate oral diseases, such as periodontitis, are also beginning to be elucidated. This review discusses the bidirectional interrelationship between oral and systemic diseases based on the oral-gut linkage.
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Affiliation(s)
- Kyoko Yamazaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan, Ann Arbor, USA
| | - Nobuhiko Kamada
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan, Ann Arbor, USA; Department of Pathology, University of Michigan, Ann Arbor, USA; WPI Immunology Frontier Research Center, Osaka University, Suita, Japan.
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12
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He F, Yu X, Zhang J, Cui J, Tang L, Zou S, Pu J, Ran P. Biomass-related PM 2.5 induced inflammatory microenvironment via IL-17F/IL-17RC axis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 342:123048. [PMID: 38036089 DOI: 10.1016/j.envpol.2023.123048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 10/13/2023] [Accepted: 11/23/2023] [Indexed: 12/02/2023]
Abstract
Biomass exposure is a significant environmental risk factor for COPD, but the underlying mechanisms have not yet been fully elucidated. Inflammatory microenvironment has been shown to drive the development of many chronic diseases. Pollution exposure can cause increased levels of inflammatory factors in the lungs, leading to an inflammatory microenvironment which is prevalent in COPD. Our findings revealed that IL-17F was elevated in COPD, while exposure to biomass led to increased expression of IL-17F in both alveolar epithelial and macrophage cells in mice. Blocking IL-17F could alleviate the lung inflammation induced by seven days of biomass exposure in mice. We employed a transwell co-culture system to simulate the microenvironment and investigate the interactions between MLE-12 and MH-S cells. We demonstrated that anti-IL-17F antibody attenuated the inflammatory responses induced by BRPM2.5 in MLE-12 and MH-S co-cultured with BRPM2.5-MLE-12, which reduced inflammatory changes in microenvironment. We found that IL-17RC, an important receptor for IL-17F, played a key role in the interactions. Knockout of IL-17RC in MH-S resulted in inhibited IL-17F signaling and attenuated inflammatory response after MH-S co-culture with BRPM2.5-MLE-12. Our investigation suggests that BRPM2.5 induces lung epithelial-macrophage interactions via IL-17F/IL-17RC axis regulating the inflammatory response. These results may provide a novel strategy for effective prevention and treatment of biomass-related COPD.
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Affiliation(s)
- Fang He
- School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong, 510000, China; State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510000, China
| | - Xiaoyuan Yu
- School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong, 510000, China
| | - Jiahuan Zhang
- State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510000, China
| | - Jieda Cui
- State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510000, China; Guangzhou National Laboratory, No.9 XingDaoHuanBei Road, Guangzhou International BioIsland, Guangzhou, Guangdong, 510000, China
| | - Lei Tang
- School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong, 510000, China
| | - Siqi Zou
- School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong, 510000, China
| | - Jinding Pu
- Department of Pulmonary and Critical Care Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510000, China
| | - Pixin Ran
- State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510000, China; Guangzhou National Laboratory, No.9 XingDaoHuanBei Road, Guangzhou International BioIsland, Guangzhou, Guangdong, 510000, China.
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Wen Y, Wang X, Si K, Xu L, Huang S, Zhan Y. Exploring the Mechanisms of Self-made Kuiyu Pingchang Recipe for the Treatment of Ulcerative Colitis and Irritable Bowel Syndrome using a Network Pharmacology-based Approach and Molecular Docking. Curr Comput Aided Drug Des 2024; 20:534-550. [PMID: 37190808 DOI: 10.2174/1573409919666230515103224] [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: 08/13/2022] [Revised: 03/24/2023] [Accepted: 04/12/2023] [Indexed: 05/17/2023]
Abstract
BACKGROUND Ulcerative colitis (UC) and irritable bowel syndrome (IBS) are common intestinal diseases. According to the clinical experience and curative effect, the authors formulated Kuiyu Pingchang Decoction (KYPCD) comprised of Paeoniae radix alba, Aurantii Fructus, Herba euphorbiae humifusae, Lasiosphaera seu Calvatia, Angelicae sinensis radix, Panax ginseng C.A. Mey., Platycodon grandiforus and Allium azureum Ledeb. OBJECTIVE The aim of the present study was to explore the mechanisms of KYPCD in the treatment of UC and IBS following the Traditional Chinese Medicine (TCM) theory of "Treating different diseases with the same treatment". METHODS The chemical ingredients and targets of KYPCD were obtained using the Traditional Chinese Medicine Systems Pharmacology database and analysis platform (TCMSP). The targets of UC and IBS were extracted using the DisGeNET, GeneCards, DrugBANK, OMIM and TTD databases. The "TCM-component-target" network and the "TCM-shared target-disease" network were imaged using Cytoscape software. The protein-protein interaction (PPI) network was built using the STRING database. The DAVID platform was used to analyze the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. Using Autodock Tools software, the main active components of KYPCD were molecularly docked with their targets and visualized using PyMOL. RESULTS A total of 46 active ingredients of KYPCD corresponding to 243 potential targets, 1,565 targets of UC and 1,062 targets of IBS, and 70 targets among active ingredients and two diseases were screened. Core targets in the PPI network included IL6, TNF, AKT1, IL1B, TP53, EGFR and VEGFA. GO and KEGG enrichment analysis demonstrated 563 biological processes, 48 cellular components, 82 molecular functions and 144 signaling pathways. KEGG enrichment results revealed that the regulated pathways were mainly related to the PI3K-AKT, MAPK, HIF-1 and IL-17 pathways. The results of molecular docking analysis indicated that the core active ingredients of KYPCD had optimal binding activity to their corresponding targets. CONCLUSION KYPCD may use IL6, TNF, AKT1, IL1B, TP53, EGFR and VEGFA as the key targets to achieve the treatment of UC and IBS through the PI3K-AKT, MAPK, HIF-1 and IL-17 pathways.
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Affiliation(s)
- Yong Wen
- Department of Traditional Chinese Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
- Department of Anorectal Integration of Traditional Chinese and Western Medicine, The Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, China
| | - Xiaoxiang Wang
- Gastroenterology Department, Chengdu First People's Hospital, Chengdu, 610000, China
| | - Ke Si
- Gastroenterology Department, Chengdu First People's Hospital, Chengdu, 610000, China
| | - Ling Xu
- Anorectal Department, Luzhou Hospital of Traditional Chinese Medicine, Luzhou, 646000, China
| | - Shuoyang Huang
- Gastrointestinal Surgery Department, Chengdu Second People's Hospital, Chengdu, 610017, China
| | - Yu Zhan
- Gastroenterology Department, Chengdu First People's Hospital, Chengdu, 610000, China
- Anorectal Department, Chengdu First People's Hospital, Chengdu, 610000, China
- Anorectal Department, Affiliated Hospital of Integrative Chinese Medicine and Western Medicine of Chengdu University of TCM, Chengdu 610041, China
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Liu XY, Wu SD. Fecal microbiota transplantation for treatment of irritable bowel syndrome: Current advances and future perspectives. Shijie Huaren Xiaohua Zazhi 2023; 31:922-932. [DOI: 10.11569/wcjd.v31.i22.922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 10/27/2023] [Accepted: 11/19/2023] [Indexed: 11/28/2023] Open
Abstract
Irritable bowel syndrome (IBS) is a kind of functional gastroin-testinal disorder, characterized by recurrent abdominal pain and altered bowel habits. IBS adversely affects the quality of life of patients for the lack of effective treatment. The etiology of IBS remains poorly known. Previous studies suggested a possible role of gut dysbiosis in IBS pathogenesis. Fecal microbiota transplantation (FMT), which aims to reverse the gut dysbiosis, is a promising strategy in IBS management. In this review, we summarize the role of the gut microbiota in IBS pathogenesis from different aspects. We also review recent studies on efficacy evaluation of FMT in IBS. Besides, we discuss factors affecting the efficacy of FMT, hoping to provide a reference for future IBS treatment strategies targeting the gut microbiota.
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Affiliation(s)
- Xin-Yi Liu
- Department of Gastroenterology and Hepatology, Zhongshan Hospital of Fudan University, Shanghai 200032, China
| | - Sheng-Di Wu
- Department of Gastroenterology and Hepatology, Zhongshan Hospital of Fudan University, Shanghai 200032, China
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Świrkosz G, Szczygieł A, Logoń K, Wrześniewska M, Gomułka K. The Role of the Microbiome in the Pathogenesis and Treatment of Ulcerative Colitis-A Literature Review. Biomedicines 2023; 11:3144. [PMID: 38137365 PMCID: PMC10740415 DOI: 10.3390/biomedicines11123144] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/21/2023] [Accepted: 11/23/2023] [Indexed: 12/24/2023] Open
Abstract
Ulcerative colitis (UC) is a chronic inflammatory bowel disease affecting the colon and rectum. UC's pathogenesis involves colonic epithelial cell abnormalities and mucosal barrier dysfunction, leading to recurrent mucosal inflammation. The purpose of the article is to show the complex interplay between ulcerative colitis and the microbiome. The literature search was conducted using the PubMed database. After a screening process of studies published before October 2023, a total of 136 articles were selected. It has been discovered that there is a fundamental correlation of a robust intestinal microbiota and the preservation of gastrointestinal health. Dysbiosis poses a grave risk to the host organism. It renders the host susceptible to infections and has been linked to the pathogenesis of chronic diseases, with particular relevance to conditions such as ulcerative colitis. Current therapeutic strategies for UC involve medications such as aminosalicylic acids, glucocorticoids, and immunosuppressive agents, although recent breakthroughs in monoclonal antibody therapies have significantly improved UC treatment. Furthermore, modulating the gut microbiome with specific compounds and probiotics holds potential for inflammation reduction, while fecal microbiota transplantation shows promise for alleviating UC symptoms. This review provides an overview of the gut microbiome's role in UC pathogenesis and treatment, emphasizing areas for further research.
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Affiliation(s)
- Gabriela Świrkosz
- Student Scientific Group of Adult Allergology, Wroclaw Medical University, 50-369 Wrocław, Poland; (G.Ś.); (K.L.)
| | - Aleksandra Szczygieł
- Student Scientific Group of Adult Allergology, Wroclaw Medical University, 50-369 Wrocław, Poland; (G.Ś.); (K.L.)
| | - Katarzyna Logoń
- Student Scientific Group of Adult Allergology, Wroclaw Medical University, 50-369 Wrocław, Poland; (G.Ś.); (K.L.)
| | - Martyna Wrześniewska
- Student Scientific Group of Adult Allergology, Wroclaw Medical University, 50-369 Wrocław, Poland; (G.Ś.); (K.L.)
| | - Krzysztof Gomułka
- Clinical Department of Internal Medicine, Pneumology and Allergology, Wroclaw Medical University, 50-369 Wrocław, Poland;
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Tortora SC, Agurto MG, Martello LA. The oral-gut-circulatory axis: from homeostasis to colon cancer. Front Cell Infect Microbiol 2023; 13:1289452. [PMID: 38029267 PMCID: PMC10663299 DOI: 10.3389/fcimb.2023.1289452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
The human microbiota is widely recognized as providing crucial health benefits to its host, specifically by modulating immune homeostasis. Microbial imbalance, known as dysbiosis, is linked to several conditions in the body. The oral cavity and gut host the two largest microbial communities playing a major role in microbial-associated diseases. While the oral-gut axis has been previously explored, our review uniquely highlights the significance of incorporating the circulatory system into this axis. The interaction between immune cells, inflammatory factors, circulating bacteria, and microbial metabolites influences the homeostasis of both the oral and gut microbiota in a bidirectional manner. In this comprehensive review, we aim to describe the bacterial components of the oral-gut-circulatory axis in both health and disease, with a specific focus on colon cancer.
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Affiliation(s)
- Sofia C. Tortora
- Department of Medicine and Division of Gastroenterology & Hepatology, SUNY Downstate Health Sciences University, Brooklyn, NY, United States
| | - Maria Gonzalez Agurto
- Departamento de Rehabilitación Craneofacial Integral, Universidad de Los Andes, Santiago, Chile
| | - Laura A. Martello
- Department of Medicine and Division of Gastroenterology & Hepatology, SUNY Downstate Health Sciences University, Brooklyn, NY, United States
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Boonyaleka K, Okano T, Iida T, Leewananthawet A, Sasai M, Yamamoto M, Ashida H, Suzuki T. Fusobacterium nucleatum infection activates the noncanonical inflammasome and exacerbates inflammatory response in DSS-induced colitis. Eur J Immunol 2023; 53:e2350455. [PMID: 37471504 DOI: 10.1002/eji.202350455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/22/2023]
Abstract
Caspase activation results in pyroptosis, an inflammatory cell death that contributes to several inflammatory diseases by releasing inflammatory cytokines and cellular contents. Fusobacterium nucleatum is a periodontal pathogen frequently detected in human cancer and inflammatory bowel diseases. Studies have reported that F. nucleatum infection leads to NLRP3 activation and pyroptosis, but the precise activation process and disease association remain poorly understood. This study demonstrated that F. nucleatum infection exacerbates acute colitis in mice and activates pyroptosis through caspase-11-mediated gasdermin D cleavage in macrophages. Furthermore, F. nucleatum infection in colitis mice induces the enhancement of IL-1⍺ secretion from the colon, affecting weight loss and severe disease activities. Neutralization of IL-1⍺ protects F. nucleatum infected mice from severe colitis. Therefore, F. nucleatum infection facilitates inflammation in acute colitis with IL-1⍺ from colon tissue by activating noncanonical inflammasome through gasdermin D cleavage.
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Affiliation(s)
- Kotchakorn Boonyaleka
- Department of Bacterial pathogenesis, Infection, and Host Response, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tokuju Okano
- Department of Bacterial pathogenesis, Infection, and Host Response, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tamako Iida
- Department of Bacterial pathogenesis, Infection, and Host Response, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Anongwee Leewananthawet
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
- Department of Restorative Dentistry and Periodontology, Specialized Dental Center of Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Miwa Sasai
- Department of Immunoparasitology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Masahiro Yamamoto
- Department of Immunoparasitology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Hiroshi Ashida
- Department of Bacterial pathogenesis, Infection, and Host Response, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Toshihiko Suzuki
- Department of Bacterial pathogenesis, Infection, and Host Response, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Zhou Y, Yu S, Zhang W. NOD-like Receptor Signaling Pathway in Gastrointestinal Inflammatory Diseases and Cancers. Int J Mol Sci 2023; 24:14511. [PMID: 37833958 PMCID: PMC10572711 DOI: 10.3390/ijms241914511] [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: 08/23/2023] [Revised: 09/15/2023] [Accepted: 09/23/2023] [Indexed: 10/15/2023] Open
Abstract
Nucleotide-binding and oligomerization domain (NOD)-like receptors (NLRs) are intracellular proteins with a central role in innate and adaptive immunity. As a member of pattern recognition receptors (PRRs), NLRs sense specific pathogen-associated molecular patterns, trigger numerous signaling pathways and lead to the secretion of various cytokines. In recent years, cumulative studies have revealed the significant impacts of NLRs in gastrointestinal (GI) inflammatory diseases and cancers. Deciphering the role and molecular mechanism of the NLR signaling pathways may provide new opportunities for the development of therapeutic strategies related to GI inflammatory diseases and GI cancers. This review presents the structures and signaling pathways of NLRs, summarizes the recent advances regarding NLR signaling in GI inflammatory diseases and GI cancers and describes comprehensive therapeutic strategies based on this signaling pathway.
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Affiliation(s)
- Yujie Zhou
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China; (Y.Z.); (S.Y.)
| | - Songyan Yu
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China; (Y.Z.); (S.Y.)
| | - Wenyong Zhang
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China; (Y.Z.); (S.Y.)
- Key University Laboratory of Metabolism and Health of Guangdong, Southern University of Science and Technology, Shenzhen 518055, China
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He H, Liu C, Chen M, Guo X, Li X, Xiang Z, Liao F, Dong W. Effect of Dietary Patterns on Inflammatory Bowel Disease: A Machine Learning Bibliometric and Visualization Analysis. Nutrients 2023; 15:3442. [PMID: 37571379 PMCID: PMC10420952 DOI: 10.3390/nu15153442] [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: 07/10/2023] [Revised: 07/27/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
AIMS This study aimed to analyze the related research on the influence of dietary patterns on IBD carried out over the past 30 years to obtain the context of the research field and to provide a scientific basis and guidance for the prevention and treatment of IBD. METHODS The literature on the effects of dietary patterns on inflammatory bowel disease published over the past three decades was retrieved from the Web of Science Core Collection (WoSCC) database. CiteSpace, VOSviewer, the R software (version 4.3.0) bibliometrix package, the OALM platform, and other tools were used for the analyses. RESULTS The growth of scientific papers related to this topic can be divided into two stages: before and after 2006. Overall, the growth of the relevant literature was in line with Price's literature growth curve. Subrata Ghosh and Antonio Gasbarrini are the authors with the highest academic influence in the field, and Lee D.'s research results are widely recognized by researchers in this field. Among the 72 countries involved in the study, the United States contributed the most, while China developed rapidly with regard to research being carried out in this area. From a regional perspective, countries and institutions in North America, Europe, and East Asia have made the most significant contributions to this field and have the closest cooperation. Among the 1074 articles included in the study, the most influential ones tended to consider the mechanism of the effect of dietary patterns on IBD from the perspective of the microbiome. Multiple tools were used for keyword analysis and mutual verification. The results showed that NF-κB, the Mediterranean diet, fatty acids, fecal microbiota, etc., are the focus and trends of current research. CONCLUSIONS A Mediterranean-like dietary pattern may be a good dietary habit for IBD patients. Carbohydrates, fatty acids, and inulin-type fructans are closely related to IBD. Fatty acid, gut microbiota, NF-κB, oxidative stress, and endoplasmic reticulum stress are the hot topics in the study of the effects of dietary patterns on IBD and will be emerging research trends.
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Affiliation(s)
- Haodong He
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, China; (H.H.); (C.L.); (M.C.); (X.G.); (X.L.); (Z.X.)
| | - Chuan Liu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, China; (H.H.); (C.L.); (M.C.); (X.G.); (X.L.); (Z.X.)
| | - Meilin Chen
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, China; (H.H.); (C.L.); (M.C.); (X.G.); (X.L.); (Z.X.)
| | - Xingzhou Guo
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, China; (H.H.); (C.L.); (M.C.); (X.G.); (X.L.); (Z.X.)
| | - Xiangyun Li
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, China; (H.H.); (C.L.); (M.C.); (X.G.); (X.L.); (Z.X.)
| | - Zixuan Xiang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, China; (H.H.); (C.L.); (M.C.); (X.G.); (X.L.); (Z.X.)
| | - Fei Liao
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, China; (H.H.); (C.L.); (M.C.); (X.G.); (X.L.); (Z.X.)
- Wuhan University Shenzhen Research Institute, Wuhan 430060, China
| | - Weiguo Dong
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, China; (H.H.); (C.L.); (M.C.); (X.G.); (X.L.); (Z.X.)
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20
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Xia Z, Sun G. Blocking RIPK2 Function Alleviates Myocardial Ischemia/Reperfusion Injury by Regulating the AKT and NF-κB Pathways. Immunol Invest 2023:1-17. [PMID: 37128885 DOI: 10.1080/08820139.2023.2203715] [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: 05/03/2023]
Abstract
OBJECTIVE Inflammation and oxidation brought on by myocardial ischemia-reperfusion (MI/R) injury lead to cardiomyocyte apoptosis and necrosis. The receptor interacting serine/threonine kinase 2 (RIPK2) plays significant roles in oxidative stress and excessive inflammation. The purpose of this research is to examine the roles of RIPK2 in MI/R injury. METHODS The in vivo animal model was constructed by acute coronary I/R, and the in vitro cell model was established by oxygen and glucose deprivation/reperfusion (OGD/R)-stimulated cardiomyocyte injury. RIPK2 expression was examined using qRT-PCR and Western blot. CCK-8 was proposed as a method for detecting cell proliferation. ELISA was utilized to measure inflammatory cytokines (TNF-α, IL-6, and IL-1β) and myocardial injury indicators (CK-MB, Mb, cTnI, and LDH). The levels of MDA and ROS were determined by the kit and fluorescent probe. H&E was conducted to assess MI/R injury after silencing of RIPK2. RESULTS In MI/R rats and OGD/R-treated H9C2 cardiomyocytes, RIPK2 was overexpressed at both the mRNA and protein levels. RIPK2 inhibition promoted cell proliferation while inhibiting apoptosis, as evidenced by decreased TUNEL-positive cells and cleaved caspase-3. RIPK2 inhibition reduced MDA and ROS levels, as well as the contents of inflammatory factors. RIPK2 silencing reduced CK-MB, Mb, cTnI, and LDH levels in rat serum and alleviated MI/R injury. Furthermore, RIPK2 inhibition increased p-AKT while decreasing NF-B p-p65 expression. CONCLUSION Silencing of RIPK2 reduced apoptosis, proinflammatory factors, and oxidative stress in MI/R by activating AKT and suppressing NF-κB signals, suggesting a potential therapeutic strategy for MI/R injury.
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Affiliation(s)
- Zhen Xia
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, P.R. china
| | - Guofang Sun
- Department of Electrocardiogram Diagnosis, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, P.R. china
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Huang X, Huang X, Huang Y, Zheng J, Lu Y, Mai Z, Zhao X, Cui L, Huang S. The oral microbiome in autoimmune diseases: friend or foe? J Transl Med 2023; 21:211. [PMID: 36949458 PMCID: PMC10031900 DOI: 10.1186/s12967-023-03995-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 02/15/2023] [Indexed: 03/24/2023] Open
Abstract
The human body is colonized by abundant and diverse microorganisms, collectively known as the microbiome. The oral cavity has more than 700 species of bacteria and consists of unique microbiome niches on mucosal surfaces, on tooth hard tissue, and in saliva. The homeostatic balance between the oral microbiota and the immune system plays an indispensable role in maintaining the well-being and health status of the human host. Growing evidence has demonstrated that oral microbiota dysbiosis is actively involved in regulating the initiation and progression of an array of autoimmune diseases.Oral microbiota dysbiosis is driven by multiple factors, such as host genetic factors, dietary habits, stress, smoking, administration of antibiotics, tissue injury and infection. The dysregulation in the oral microbiome plays a crucial role in triggering and promoting autoimmune diseases via several mechanisms, including microbial translocation, molecular mimicry, autoantigen overproduction, and amplification of autoimmune responses by cytokines. Good oral hygiene behaviors, low carbohydrate diets, healthy lifestyles, usage of prebiotics, probiotics or synbiotics, oral microbiota transplantation and nanomedicine-based therapeutics are promising avenues for maintaining a balanced oral microbiome and treating oral microbiota-mediated autoimmune diseases. Thus, a comprehensive understanding of the relationship between oral microbiota dysbiosis and autoimmune diseases is critical for providing novel insights into the development of oral microbiota-based therapeutic approaches for combating these refractory diseases.
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Affiliation(s)
- Xiaoyan Huang
- Department of Preventive Dentistry, Stomatological Hospital, School of Stomatology, Southern Medical University, Haizhu District, No.366 Jiangnan Da Dao Nan, Guangzhou, 510280, China
| | - Xiangyu Huang
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Haizhu District, No.366 Jiangnan Da Dao Nan, Guangzhou, 510280, China
| | - Yi Huang
- Department of Preventive Dentistry, Stomatological Hospital, School of Stomatology, Southern Medical University, Haizhu District, No.366 Jiangnan Da Dao Nan, Guangzhou, 510280, China
| | - Jiarong Zheng
- Department of Dentistry, The First Affiliated Hospital, Sun Yat-Sen University, Zhongshan 2nd Road, Guangzhou, 510080, China
| | - Ye Lu
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, Haizhu District, Guangzhou, 510280, China
| | - Zizhao Mai
- Department of Dentistry, The First Affiliated Hospital, Sun Yat-Sen University, Zhongshan 2nd Road, Guangzhou, 510080, China
| | - Xinyuan Zhao
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Haizhu District, No.366 Jiangnan Da Dao Nan, Guangzhou, 510280, China.
| | - Li Cui
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, Haizhu District, Guangzhou, 510280, China.
- Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles, CA, 90095, USA.
| | - Shaohong Huang
- Department of Preventive Dentistry, Stomatological Hospital, School of Stomatology, Southern Medical University, Haizhu District, No.366 Jiangnan Da Dao Nan, Guangzhou, 510280, China.
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Lu Y, Li Z, Peng X. Regulatory effects of oral microbe on intestinal microbiota and the illness. Front Cell Infect Microbiol 2023; 13:1093967. [PMID: 36816583 PMCID: PMC9928999 DOI: 10.3389/fcimb.2023.1093967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/16/2023] [Indexed: 02/04/2023] Open
Abstract
Over the past decade, the association between oral health, intestinal microbiota, and systemic diseases has been further validated. Some oral microbial species have been isolated from pathological intestine mucosa or feces and identified as biomarkers for intestinal diseases. A small proportion of oral microbiome passes through or colonizes the lower gastrointestinal tract, even in healthy individuals. Opportunistic pathogens from the oral cavity may expand and participate in the occurrence and progression of intestinal diseases when the anatomical barrier is disrupted. These disruptors interact with the intestinal microbiota, disturbing indigenous microorganisms, and mucosal barriers through direct colonization, blood circulation, or derived metabolite pathways. While interacting with the host's immune system, oral-derived pathogens stimulate inflammation responses and guide the transition of the intestinal microenvironment from a healthy state to a pre-disease state. Therefore, the oral-gut microbiome axis sheds light on new clinical therapy options, and gastrointestinal tract ecology balance necessitates simultaneous consideration of both oral and gut microbiomes. This review summarizes possible routes of oral microbes entering the intestine and the effects of certain oral bacteria on intestinal microbiota and the host's immune responses.
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Wu X, Xu J, Yang X, Wang D, Xu X. Integrating Transcriptomics and Metabolomics to Explore the Novel Pathway of Fusobacterium nucleatum Invading Colon Cancer Cells. Pathogens 2023; 12:pathogens12020201. [PMID: 36839472 PMCID: PMC9967813 DOI: 10.3390/pathogens12020201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/18/2023] [Accepted: 01/27/2023] [Indexed: 01/31/2023] Open
Abstract
Colorectal cancer (CRC) is a malignancy with a very high incidence and mortality rate worldwide. Fusobacterium nucleatum bacteria and their metabolites play a role in inducing and promoting CRC; however, no studies on the exchange of information between Fusobacterium nucleatum extracellular vesicles (Fnevs) and CRC cells have been reported. Our research shows that Fusobacterium nucleatum ATCC25586 secretes extracellular vesicles carrying active substances from parental bacteria which are endocytosed by colon cancer cells. Moreover, Fnevs promote the proliferation, migration, and invasion of CRC cells and inhibit apoptosis; they also improve the ability of CRC cells to resist oxidative stress and SOD enzyme activity. The genes differentially expressed after transcriptome sequencing are mostly involved in the positive regulation of tumor cell proliferation. After detecting differential metabolites using liquid chromatography-tandem mass spectrometry, Fnevs were found to promote cell proliferation by regulating amino acid biosynthesis in CRC cells and metabolic pathways such as central carbon metabolism, protein digestion, and uptake in cancer. In summary, this study not only found new evidence of the synergistic effect of pathogenic bacteria and colon cancer tumor cells, but also provides a new direction for the early diagnosis and targeted treatment of colon cancer.
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Affiliation(s)
- Xinyu Wu
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Jinzhao Xu
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Xiaoying Yang
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Danping Wang
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Xiaoxi Xu
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
- Correspondence: ; Tel.: +86-0451-55191827
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Wei S, Zhang J, Wu X, Chen M, Huang H, Zeng S, Xiang Z, Li X, Dong W. Fusobacterium nucleatum Extracellular Vesicles Promote Experimental Colitis by Modulating Autophagy via the miR-574-5p/CARD3 Axis. Inflamm Bowel Dis 2023; 29:9-26. [PMID: 35998069 DOI: 10.1093/ibd/izac177] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Indexed: 02/06/2023]
Abstract
BACKGROUND Ulcerative colitis (UC) may be exacerbated by Fusobacterium nucleatum (Fn) infection. However, the mechanism underlying Fn-mediated progression of UC has yet to be established. Here, we aimed to establish whether and how Fn-derived extracellular vesicles (Fn-EVs) participate in the development of experimental colitis through microRNAs (miRNAs). METHODS EVs were isolated and purified by ultracentrifugation from Fn and Escherichia coli culture supernatants. Differentially expressed miRNAs in control intestinal epithelial cells (IECs) and Fn-EV-treated IECs were identified by miRNA sequencing. EVs were cocultured with IECs or administered to CARD3wt/CARD3-/- mice by gavage to assess inflammatory responses to and the mechanism of action of Fn-EVs. RESULTS Fn-EVs promoted upregulation of proinflammatory cytokines (interleukin [IL]-1β, IL-6, tumor necrosis factor α), downregulation of anti-inflammatory IL-10 and intercellular tight junction proteins ZO-1 and occludin, and epithelial barrier dysfunction in IECs. Fn-EVs significantly aggravated experimental colitis in mice associated with Fn-EV-mediated downregulation of miR-574-5p expression and autophagy activation. Blockade of autophagy using chloroquine alleviates barrier damage exacerbated by Fn-EVs in vitro and in vivo. Inhibition of the miR-574-5p/CARD3 axis reduced the severity of colitis, epithelial barrier damage, and autophagy activation induced by Fn-EVs. CONCLUSIONS Here, we describe a new mechanism by which Fn-EVs mediate experimental colitis severity through miR-574-5p/CARD3-dependent autophagy activation, providing a novel target for UC monitoring and targeted therapy.
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Affiliation(s)
- Shuchun Wei
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Digestive System Disease, Wuhan, China
| | - Jixiang Zhang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xiaohan Wu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Digestive System Disease, Wuhan, China
| | - Meilin Chen
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Digestive System Disease, Wuhan, China
| | - Hancheng Huang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Digestive System Disease, Wuhan, China
| | - Suqi Zeng
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Digestive System Disease, Wuhan, China
| | - Zixuan Xiang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Digestive System Disease, Wuhan, China
| | - Xiangyun Li
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Digestive System Disease, Wuhan, China
| | - Weiguo Dong
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
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Duan C, Hou L, Deng X, Wu J, Qian W, Han C, Hou X. Fucose ameliorates the proinflammatory property of Fusobacterium nucleatum in colitis via altering its metabolism. Front Cell Infect Microbiol 2023; 13:1190602. [PMID: 37197204 PMCID: PMC10183584 DOI: 10.3389/fcimb.2023.1190602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 04/19/2023] [Indexed: 05/19/2023] Open
Abstract
Introduction Previous studies reported that fucose plays a protective role in inhibiting pathogens. Fusobacterium nucleatum (Fn) was recently found to promote the progression of colitis. However, the effects of fucose on Fn are poorly understood. This study aimed to explore whether fucose could ameliorate the proinflammatory property of Fn in colitis and the underlying mechanisms. Methods To validate our hypothesis, mice were administrated with Fn and fucose-treated Fn (Fnf) before dextran sulfate sodium (DSS) treatment to establish Fn related colitis model. The metabolism variation of Fn was detected by metabolomic analysis. To verify the effects of bacterial metabolites on intestinal epithelial cells (IECs), Caco-2 cells were treated with bacterial supernatant. Results More severe inflammation, intestinal barrier damage, autophagy block, and apoptosis in the colon were noted in DSS mice that were administrated with Fn or Fnf. However, the severity degree in Fnf+DSS group was less compared to Fn+DSS group. Metabolic pathways of Fn were altered after fucose treatment and proinflammatory metabolites were decreased. The supernatant of Fnf induced a lower level of inflammation than Fn in Caco-2 cells. One of the decreased metabolites, homocysteine thiolactone (HT), was proven to induce inflammatory effects in Caco-2 cells. Discussion In conclusion, fucose ameliorates the proinflammatory property of Fn via altering its metabolism and these findings provide evidence for the application of fucose as functional food or prebiotic in the treatment of Fn related colitis.
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Affiliation(s)
- Caihan Duan
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lingzhi Hou
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaohua Deng
- Hubei Center of Industrial Culture Collection and Research, Wuhan, China
| | - Junhao Wu
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wei Qian
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chaoqun Han
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Chaoqun Han, ; Xiaohua Hou,
| | - Xiaohua Hou
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Chaoqun Han, ; Xiaohua Hou,
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26
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Wei S, Wu X, Chen M, Xiang Z, Li X, Zhang J, Dong W. Exosomal-miR-129-2-3p derived from Fusobacterium nucleatum-infected intestinal epithelial cells promotes experimental colitis through regulating TIMELESS-mediated cellular senescence pathway. Gut Microbes 2023; 15:2240035. [PMID: 37550944 PMCID: PMC10411316 DOI: 10.1080/19490976.2023.2240035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 07/14/2023] [Accepted: 07/19/2023] [Indexed: 08/09/2023] Open
Abstract
Fusobacterium nucleatum (Fn) infection is known to exacerbate ulcerative colitis (UC). However, the link between Fn-infected intestinal epithelial cell (IEC)-derived exosomes (Fn-Exo) and UC progression has not been investigated. Differentially expressed miRNAs in Fn-Exo and non-infected IECs-derived exosomes (Con-Exo) were identified by miRNA sequencing. Then, the biological role and mechanism of Fn-Exo in UC development were determined in vitro and in vivo. We found that exosomes delivered miR-129-2-3p from Fn-infected IECs into non-infected IECs, exacerbating epithelial barrier dysfunction and experimental colitis. Mechanically, Fn-Exo induces DNA damage via the miR-129-2-3p/TIMELESS axis and subsequently activates the ATM/ATR/p53 pathway, ultimately promoting cellular senescence and colonic inflammation. In conclusion, Exo-miR-129-2-3p/TIMELESS/ATM/ATR/p53 pathway aggravates cellular senescence, barrier damage, and experimental colitis. The current study revealed a previously unknown regulatory pathway in the progression of Fn-infectious UC. Furthermore, Exosomal-miR-129-2-3p in serum and TIMELESS may function as novel potential diagnostic biomarkers for UC and Fn-high-UC.
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Affiliation(s)
- Shuchun Wei
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Xiaohan Wu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Meilin Chen
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Zixuan Xiang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Xiangyun Li
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Jixiang Zhang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Weiguo Dong
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
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27
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Wang G, Lyu Q, Yang T, Cui S, Niu K, Gu R, Li Y, Li J, Xing W, Li L. Association of intestinal microbiota markers and dietary pattern in Chinese patients with type 2 diabetes: The Henan rural cohort study. Front Public Health 2022; 10:1046333. [PMID: 36466492 PMCID: PMC9709334 DOI: 10.3389/fpubh.2022.1046333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 10/31/2022] [Indexed: 11/17/2022] Open
Abstract
Studies on intestinal microbiota in Chinese type 2 diabetes mellitus (T2DM) patients are scarce and correlation studies with dietary intake are lacking. The case-control study included 150 participants (74 T2DM patients and 76 controls) and microbiome analysis was performed using 16S rDNA sequencing. Principal component analysis was used to determine dietary patterns and correlation analysis was used to evaluate the associations between microbiota diversity, T2DM indicators and dietary variables. Compared to controls, the T2DM group had different gut flora characteristics, including lower alpha diversity, higher Firmicutes/Bacteroidetes ratios, statistically significant beta diversity and other specific bacterial species differences. Gut microbiota was associated with several diabetes-related metabolic markers including HOMA2-β, fasting plasma glucose, HbA1c and fasting insulin. Significant associations were also observed between dietary intake pattern and gut flora. The animal foods pattern scores were positively correlated with the relative abundance of the phylum Fusobacteria, and the vegetarian diet pattern scores were positively correlated with the relative abundance of the phylum Actinobacteria. Phylum Actinobacteria mediated the association of vegetarian diet pattern with fasting insulin and HOMA2-β (all P < 0.05). Composition of intestinal microbiota in Chinese T2DM patients differs from that of control population, and the intestinal flora is affected by dietary intake while being associated with several diabetes-related metabolic markers. The gut microbiota may play an important role in linking dietary intake and the etiology of T2DM.
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Affiliation(s)
- Guanjun Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Weifang Medical University, Weifang, China
| | - Quanjun Lyu
- Department of Nutrition, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Tianyu Yang
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Songyang Cui
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Kailin Niu
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Ruohua Gu
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Yan Li
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Jia Li
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Wenguo Xing
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Linlin Li
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China,*Correspondence: Linlin Li
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28
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Zeng X, Li X, Yue Y, Wang X, Chen H, Gu Y, Jia H, He Y, Yuan Y, Yue T. Ameliorative Effect of Saccharomyces cerevisiae JKSP39 on Fusobacterium nucleatum and Dextran Sulfate Sodium-Induced Colitis Mouse Model. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:14179-14192. [PMID: 36260319 DOI: 10.1021/acs.jafc.2c05338] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The aim of this study was to evaluate the ability of the Saccharomyces cerevisiae strain with probiotic properties isolated from Tibetan kefir grains to ameliorate Fusobacterium nucleatum (Fn) infection and dextran sulfate sodium (DSS) treatment-induced murine model of colitis. The tolerance to simulated gastrointestinal conditions, hydrophobicity test, autoaggregation assay, and the antioxidant effect of strains was used to screen one strain with colonization and probiotic potential. The murine model of colitis was established by giving 109 cfu Fn 3 weeks by intragastric administration and 3% DSS in water 1 week before sacrifice. The results indicated that S. cerevisiae JKSP39 (SC) possessed optimal probiotic characteristics in vitro. Supplementation with SC increased the body weight and the expression of anti-inflammatory cytokines (IL-4 and IL-10), while decreasing the disease activity index score and expression of proinflammatory cytokines (TNF-α, IL-6, and IL-17F) in mice undergoing experimental colitis as compared with the colitis model group. Additionally, tight junction proteins and the number of goblet cells per crypt were significantly increased in the SC group, which indicated that the gut barrier was well repaired. The mechanism of SC ameliorating Fn-DSS-induced colitis could be related to the decreased levels of reactive oxygen species (myeloperoxidase, total superoxide dismutase, catalase, H2O2, and malondialdehyde) in the colon, the inhibition of endoplasmic reticulum stress, and the regulation of gut microbiota.
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Affiliation(s)
- Xuejun Zeng
- College of Food Science and Engineering, Northwest A & F University, Yangling712100, China
- Laboratory of Quality & Safety Risk Assessment for Agri-Products (Yangling), Ministry of Agriculture, Yangling712100, China
| | - Xuejiao Li
- College of Food Science and Engineering, Northwest A & F University, Yangling712100, China
- Laboratory of Quality & Safety Risk Assessment for Agri-Products (Yangling), Ministry of Agriculture, Yangling712100, China
| | - Yuan Yue
- Xi'an Gaoxin No.1 High School, Xi'an710065, China
| | - Xin Wang
- College of Food Science and Engineering, Northwest A & F University, Yangling712100, China
- Laboratory of Quality & Safety Risk Assessment for Agri-Products (Yangling), Ministry of Agriculture, Yangling712100, China
| | - Hong Chen
- College of Food Science and Engineering, Northwest A & F University, Yangling712100, China
- Laboratory of Quality & Safety Risk Assessment for Agri-Products (Yangling), Ministry of Agriculture, Yangling712100, China
| | - Yuanyuan Gu
- College of Food Science and Engineering, Northwest A & F University, Yangling712100, China
| | - Hang Jia
- College of Food Science and Engineering, Northwest A & F University, Yangling712100, China
- Laboratory of Quality & Safety Risk Assessment for Agri-Products (Yangling), Ministry of Agriculture, Yangling712100, China
| | - Yining He
- School of Agriculture and Food Sciences, The University of Queensland, Brisbane, QLD4072, Australia
| | - Yahong Yuan
- College of Food Science and Engineering, Northwest A & F University, Yangling712100, China
- Laboratory of Quality & Safety Risk Assessment for Agri-Products (Yangling), Ministry of Agriculture, Yangling712100, China
- College of Food Science and Technology, Northwest University, Xi'an710069, China
| | - Tianli Yue
- College of Food Science and Engineering, Northwest A & F University, Yangling712100, China
- Laboratory of Quality & Safety Risk Assessment for Agri-Products (Yangling), Ministry of Agriculture, Yangling712100, China
- College of Food Science and Technology, Northwest University, Xi'an710069, China
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[NLRC4 plays a regulatory role in F. nucleatum-induced pyroptosis in macrophages]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2022; 42:1560-1565. [PMID: 36329592 PMCID: PMC9637494 DOI: 10.12122/j.issn.1673-4254.2022.10.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
OBJECTIVE To explore the mechanism of F.nucleatum-induced pyroptosis in macrophages and the regulatory role of inflammasomes. METHODS Lactate dehydrogenase (LDH) cytotoxicity assay and Hoechst 33342/PI double fluorescence staining were used to analyze cytolysis in F.nucleatum-infected macrophage RAW264.7 cells.The expressions of pyroptosis-related proteins caspase-1, GSDMD and IL-1β were determined using Western blotting.Inflammasome activation in the cells was analyzed by detecting the mRNA expressions of NLRP3, NLRC4, AIM2, and NLRP1 with qRT-PCR.RNA interference technique was used to knock down the key molecules involved in pyroptosis regulation in the macrophages, and the pyroptosis and necrosis rates of the cells following F.nucleatum infection were examined. RESULTS The results of LDH cytotoxicity assay and double-fluorescence staining showed that F.nucleatum infection caused swelling and lytic cell death in RAW264.7 cells.F.nucleatum infection resulted in the activation of caspase-1 and GSDMD and upregulated IL-1β expression in a multiplicity of infection (MOI)-and time-dependent manner (P < 0.05).qRT-PCR revealed significantly increased expression of NLRC4 mRNA in the macrophages after F.nucleatum infection (P < 0.05).NLRC4 silencing by siRNA strongly inhibited the activation of caspase-1/GSDMD pathway and reduced cell death (P < 0.05) and IL-1β expression in F.nucleatum-infected cells. CONCLUSION NLRC4 inflammasome drives caspase-1/GSDMD-mediated pyroptosis and inflammatory signaling in F.nucleatum-infected macrophages, suggesting the potential of NLRC4 inflammasome as a therapeutic target for F.nucleatum infections.
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Insight into the Relationship between Oral Microbiota and the Inflammatory Bowel Disease. Microorganisms 2022; 10:microorganisms10091868. [PMID: 36144470 PMCID: PMC9505529 DOI: 10.3390/microorganisms10091868] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/03/2022] [Accepted: 09/09/2022] [Indexed: 11/17/2022] Open
Abstract
Inflammatory bowel disease has been a growing concern of lots of people globally, including both adults and children. As a chronic inflammatory disease of the intestine, even though the etiology of inflammatory bowel disease is still unclear, the available evidence from clinic observations has suggested a close association with microorganisms. The oral microbiota possesses the characteristics of a large number and abundant species, second only to the intestinal microbiota in the human body; as a result, it successfully attracts the attention of researchers. The highly diverse commensal oral microbiota is not only a normal part of the oral cavity but also has a pronounced impact on the pathophysiology of general health. Numerous studies have shown the potential associations between the oral microbiota and inflammatory bowel disease. Inflammatory bowel disease can affect the composition of the oral microbiota and lead to a range of oral pathologies. In turn, there are a variety of oral microorganisms involved in the development and progression of inflammatory bowel disease, including Streptococcus spp., Fusobacterium nucleatum, Porphyromonas gingivalis, Campylobacter concisus, Klebsiella pneumoniae, Saccharibacteria (TM7), and Candida albicans. Based on the above analysis, the purpose of this review is to summarize this relationship of mutual influence and give further insight into the detection of flora as a target for the diagnosis and treatment of inflammatory bowel disease to open up a novel approach in future clinical practice.
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The protective effects of natural product tunicatachalcone against neuroinflammation via targeting RIPK2 in microglia BV-2 cells stimulated by LPS. Bioorg Med Chem 2022; 69:116916. [DOI: 10.1016/j.bmc.2022.116916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 06/24/2022] [Accepted: 06/29/2022] [Indexed: 11/19/2022]
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Inflammatory Bowel Disease: A Review of Pre-Clinical Murine Models of Human Disease. Int J Mol Sci 2022; 23:ijms23169344. [PMID: 36012618 PMCID: PMC9409205 DOI: 10.3390/ijms23169344] [Citation(s) in RCA: 52] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/15/2022] [Accepted: 08/17/2022] [Indexed: 12/11/2022] Open
Abstract
Crohn’s disease (CD) and ulcerative colitis (UC) are both highly inflammatory diseases of the gastrointestinal tract, collectively known as inflammatory bowel disease (IBD). Although the cause of IBD is still unclear, several experimental IBD murine models have enabled researchers to make great inroads into understanding human IBD pathology. Here, we discuss the current pre-clinical experimental murine models for human IBD, including the chemical-induced trinitrobenzene sulfonic acid (TNBS) model, oxazolone and dextran sulphate sodium (DSS) models, the gene-deficient I-kappa-B kinase gamma (Iκκ-γ) and interleukin(IL)-10 models, and the CD4+ T-cell transfer model. We offer a comprehensive review of how these models have been used to dissect the etiopathogenesis of disease, alongside their limitations. Furthermore, the way in which this knowledge has led to the translation of experimental findings into novel clinical therapeutics is also discussed.
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Fu Q, Song T, Ma X, Cui J. Research progress on the relationship between intestinal microecology and intestinal bowel disease. Animal Model Exp Med 2022; 5:297-310. [PMID: 35962562 PMCID: PMC9434592 DOI: 10.1002/ame2.12262] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 06/21/2022] [Indexed: 12/02/2022] Open
Abstract
Intestinal microecology is the main component of human microecology. Intestinal microecology consists of intestinal microbiota, intestinal epithelial cells, and intestinal mucosal immune system. These components are interdependent and establish a complex interaction network that restricts each other. According to the impact on the human body, there are three categories of symbiotic bacteria, opportunistic pathogens, and pathogenic bacteria. The intestinal microecology participates in digestion and absorption, and material metabolism, and inhibits the growth of pathogenic microorganisms. It also acts as the body's natural immune barrier, regulates the innate immunity of the intestine, controls the mucosal barrier function, and also participates in the intestinal epithelial cells' physiological activities such as hyperplasia or apoptosis. When the steady‐state balance of the intestinal microecology is disturbed, the existing core intestinal microbiota network changes and leads to obesity, diabetes, and many other diseases, especially irritable bowel syndrome, inflammatory bowel disease (IBD), and colorectal malignancy. Intestinal diseases, including tumors, are particularly closely related to intestinal microecology. This article systematically discusses the research progress on the relationship between IBD and intestinal microecology from the pathogenesis, treatment methods of IBD, and the changes in intestinal microbiota.
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Affiliation(s)
- Qianhui Fu
- School of Pharmacy, Minzu University of China, Beijing, China.,Ministry of Education, Key Laboratory of Ethnomedicine, Minzu University of China, Beijing, China
| | - Tianyuan Song
- School of Pharmacy, Minzu University of China, Beijing, China.,Ministry of Education, Key Laboratory of Ethnomedicine, Minzu University of China, Beijing, China
| | - Xiaoqin Ma
- School of Pharmacy, Minzu University of China, Beijing, China.,Ministry of Education, Key Laboratory of Ethnomedicine, Minzu University of China, Beijing, China
| | - Jian Cui
- School of Pharmacy, Minzu University of China, Beijing, China.,Ministry of Education, Key Laboratory of Ethnomedicine, Minzu University of China, Beijing, China
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Cao P, Chen Q, Shi C, Wang L, Gong Z. Fusobacterium nucleatum promotes the development of acute liver failure by inhibiting the NAD + salvage metabolic pathway. Gut Pathog 2022; 14:29. [PMID: 35765030 PMCID: PMC9238040 DOI: 10.1186/s13099-022-00503-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 06/01/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Acute liver failure (ALF) patients are often accompanied by severe energy metabolism abnormalities and intestinal microecological imbalance. The intestinal mucosal barrier is severely damaged. Intestinal endotoxin can induce intestinal endotoxemia through the "Gut-Liver axis". More and more evidence shows that members of the gut microbiota, especially Fusobacterium nucleatum (F. nucleatum), are related to inflammatory bowel disease, but whether F. nucleatum is involved in the development of ALF and whether it affects the liver energy metabolism is unclear. METHODS This study first detected the abundance of F. nucleatum and its effect on ALF disease, and explored whether F. nucleatum aggravated liver inflammation in vitro and in vivo. RESULTS Our data showed that liver tissues of ALF patients contained different abundances of F. nucleatum, which were related to the degree of liver inflammation. In addition, we found that F. nucleatum infection affected the energy metabolism of the liver during the development of ALF, inhibited the synthesis pathway of nicotinamide adenine dinucleotide (NAD+)'s salvage metabolism, and promoted inflammatory damage in the liver. In terms of mechanism, F. nucleatum inhibited NAD+ and the NAD+-dependent SIRT1/AMPK signaling pathway, and promoted liver damage of ALF. CONCLUSIONS Fusobacterium nucleatum coordinates a molecular network including NAD+ and SIRT1 to control the progress of ALF. Detection and targeting of F. nucleatum and its related pathways may provide valuable insights for the treatment of ALF.
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Affiliation(s)
- Pan Cao
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, 238 Jie Fang Road, Wuhan, 430060, People's Republic of China
| | - Qian Chen
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, 238 Jie Fang Road, Wuhan, 430060, People's Republic of China
| | - Chunxia Shi
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, 238 Jie Fang Road, Wuhan, 430060, People's Republic of China
| | - Luwen Wang
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, 238 Jie Fang Road, Wuhan, 430060, People's Republic of China
| | - Zuojiong Gong
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, 238 Jie Fang Road, Wuhan, 430060, People's Republic of China.
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35
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Kitamoto S, Kamada N. Periodontal connection with intestinal inflammation: Microbiological and immunological mechanisms. Periodontol 2000 2022; 89:142-153. [PMID: 35244953 PMCID: PMC9018512 DOI: 10.1111/prd.12424] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Humans have coevolved with the trillions of resident microbes that populate every nook and cranny of the body. At each site, the resident microbiota creates a unique ecosystem specialized to its environment, benefiting the development and maintenance of human physiology through harmonious symbiotic relationships with the host. However, when the resident microbiota is perturbed, significant complications may arise with disastrous consequences that affect the local and distant ecosystems. In this context, periodontal disease results in inflammation beyond the oral cavity, such as in the gastrointestinal tract. Accumulating evidence indicates that potentially harmful oral resident bacteria (referred to as pathobionts) and pathogenic immune cells in the oral mucosa can migrate to the lower gastrointestinal tract and contribute to intestinal inflammation. We will review the most recent advances concerning the periodontal connection with intestinal inflammation from microbiological and immunological perspectives. Potential therapeutic approaches that target the connection between the mouth and the gut to treat gastrointestinal diseases, such as inflammatory bowel disease, will be examined. Deciphering the complex interplay between microbes and immunity along the mouth-gut axis will provide a better understanding of the pathogenesis of both oral and gut pathologies and present therapeutic opportunities.
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Affiliation(s)
- Sho Kitamoto
- Division of Gastroenterology and HepatologyDepartment of Internal MedicineUniversity of MichiganAnn ArborMichiganUSA
| | - Nobuhiko Kamada
- Division of Gastroenterology and HepatologyDepartment of Internal MedicineUniversity of MichiganAnn ArborMichiganUSA
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Liu H, Du J, Chao S, Li S, Cai H, Zhang H, Chen G, Liu P, Bu P. Fusobacterium nucleatum Promotes Colorectal Cancer Cell to Acquire Stem Cell-Like Features by Manipulating Lipid Droplet-Mediated Numb Degradation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2105222. [PMID: 35170250 PMCID: PMC9035998 DOI: 10.1002/advs.202105222] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/19/2021] [Indexed: 05/26/2023]
Abstract
Fusobacterium nucleatum is a critical microbe that contributes to colorectal cancer progression and chemoresistance. However, whether and how F. nucleatum regulates colorectal cancer stem-like cells (CCSCs) remains unknown. Here, the authors show that F. nucleatum promotes CCSC self-renewal, and non-CCSCs to acquire CCSC features by manipulating cellular lipid accumulation. F. nucleatum infection decreases lipid accumulation in CCSCs by enhancing fatty acid oxidation, thus promoting CCSC self-renewal. In contrast, F. nucleatum increases lipid accumulation in non-CCSCs by promoting fatty acid formation. Lipids are deposited as lipid droplets, which recruits Numb, a key cell fate regulator, through the AP2A/ACSL3 complex, and MDM2, an E3 ubiquitin ligase, though VCP and UBXD8. On lipid droplets, Numb is degraded by MDM2, activating Notch signaling, thus promoting gain of stem-like cell features. Their findings demonstrate that F. nucleatum directly manipulates colorectal cancer cell fate and reveal the mechanism of lipid droplet-mediated Numb degradation for activating Notch signaling.
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Affiliation(s)
- Haiyang Liu
- Key Laboratory of RNA BiologyKey Laboratory of Protein and Peptide PharmaceuticalInstitute of BiophysicsChinese Academy of SciencesBeijing100101China
| | - Junfeng Du
- Department of General Surgerythe 7th Medical CenterChinese PLA General HospitalBeijing100700China
- The 2nd School of Clinical MedicineSouthern Medical UniversityGuangdong510515China
- Medical Department of General Surgerythe 1st Medical CenterChinese PLA General HospitalBeijing100853China
| | - Shanshan Chao
- Key Laboratory of RNA BiologyKey Laboratory of Protein and Peptide PharmaceuticalInstitute of BiophysicsChinese Academy of SciencesBeijing100101China
- College of Life SciencesUniversity of Chinese Academy of SciencesBeijing100049China
| | - Shuoguo Li
- Center for Biological ImagingInstitute of BiophysicsChinese Academy of SciencesBeijing100101China
| | - Huiyun Cai
- Department of General Surgerythe 7th Medical CenterChinese PLA General HospitalBeijing100700China
| | - Hongjie Zhang
- The core facilityInstitute of BiophysicsChinese Academy of SciencesBeijing100101China
| | - Gang Chen
- Department of General Surgerythe 7th Medical CenterChinese PLA General HospitalBeijing100700China
- Medical Department of General Surgerythe 1st Medical CenterChinese PLA General HospitalBeijing100853China
| | - Pingsheng Liu
- National Laboratory of BiomacromoleculesInstitute of BiophysicsChinese Academy of SciencesBeijing100101China
- Center for Excellence in BiomacromoleculesChinese Academy of SciencesBeijing100101China
| | - Pengcheng Bu
- Key Laboratory of RNA BiologyKey Laboratory of Protein and Peptide PharmaceuticalInstitute of BiophysicsChinese Academy of SciencesBeijing100101China
- College of Life SciencesUniversity of Chinese Academy of SciencesBeijing100049China
- Center for Excellence in BiomacromoleculesChinese Academy of SciencesBeijing100101China
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Molinero N, Taladrid D, Zorraquín-Peña I, de Celis M, Belda I, Mira A, Bartolomé B, Moreno-Arribas MV. Ulcerative Colitis Seems to Imply Oral Microbiome Dysbiosis. Curr Issues Mol Biol 2022; 44:1513-1527. [PMID: 35723361 PMCID: PMC9164047 DOI: 10.3390/cimb44040103] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/19/2022] [Accepted: 03/29/2022] [Indexed: 12/12/2022] Open
Abstract
Ulcerative colitis (UC) is a recurrent pathology of complex etiology that has been occasionally associated with oral lesions, but the overall composition of the oral microbiome in UC patients and its role in the pathogenesis of the disease are still poorly understood. In this study, the oral microbiome of UC patients and healthy individuals was compared to ascertain the possible changes in the oral microbial communities associated with UC. For this, the salivary microbiota of 10 patients diagnosed with an active phase of UC and 11 healthy controls was analyzed by 16S rRNA gene sequencing (trial ref. ISRCTN39987). Metataxonomic analysis revealed a decrease in the alpha diversity and an imbalance in the relative proportions of some key members of the oral core microbiome in UC patients. Additionally, Staphylococcus members and four differential species or phylotypes were only present in UC patients, not being detected in healthy subjects. This study provides a global snapshot of the existence of oral dysbiosis associated with UC, and the possible presence of potential oral biomarkers.
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Affiliation(s)
- Natalia Molinero
- Institute of Food Science Research (CIAL), CSIC-UAM, Campus de Cantoblanco, Nicolás Cabrera 9, 28049 Madrid, Spain; (N.M.); (D.T.); (I.Z.-P.); (B.B.)
| | - Diego Taladrid
- Institute of Food Science Research (CIAL), CSIC-UAM, Campus de Cantoblanco, Nicolás Cabrera 9, 28049 Madrid, Spain; (N.M.); (D.T.); (I.Z.-P.); (B.B.)
| | - Irene Zorraquín-Peña
- Institute of Food Science Research (CIAL), CSIC-UAM, Campus de Cantoblanco, Nicolás Cabrera 9, 28049 Madrid, Spain; (N.M.); (D.T.); (I.Z.-P.); (B.B.)
| | - Miguel de Celis
- Department of Genetics, Physiology and Microbiology, Complutense University of Madrid, 28040 Madrid, Spain; (M.d.C.); (I.B.)
| | - Ignacio Belda
- Department of Genetics, Physiology and Microbiology, Complutense University of Madrid, 28040 Madrid, Spain; (M.d.C.); (I.B.)
| | - Alex Mira
- Center for Advanced Research in Public Health, Department of Health and Genomics, FISABIO Foundation, 46020 Valencia, Spain;
| | - Begoña Bartolomé
- Institute of Food Science Research (CIAL), CSIC-UAM, Campus de Cantoblanco, Nicolás Cabrera 9, 28049 Madrid, Spain; (N.M.); (D.T.); (I.Z.-P.); (B.B.)
| | - M. Victoria Moreno-Arribas
- Institute of Food Science Research (CIAL), CSIC-UAM, Campus de Cantoblanco, Nicolás Cabrera 9, 28049 Madrid, Spain; (N.M.); (D.T.); (I.Z.-P.); (B.B.)
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Qiu P, Ishimoto T, Fu L, Zhang J, Zhang Z, Liu Y. The Gut Microbiota in Inflammatory Bowel Disease. Front Cell Infect Microbiol 2022; 12:733992. [PMID: 35273921 PMCID: PMC8902753 DOI: 10.3389/fcimb.2022.733992] [Citation(s) in RCA: 118] [Impact Index Per Article: 59.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 01/24/2022] [Indexed: 12/16/2022] Open
Abstract
Epidemiological surveys indicate that the incidence of inflammatory bowel disease (IBD) is increasing rapidly with the continuous growth of the economy. A large number of studies have investigated the relationship between the genetic factors related to the susceptibility to IBD and the gut microbiota of patients by using high-throughput sequencing. IBD is considered the outcome of the interaction between host and microorganisms, including intestinal microbial factors, abnormal immune response, and a damaged intestinal mucosal barrier. The imbalance of microbial homeostasis leads to the colonization and invasion of opportunistic pathogens in the gut, which increases the risk of the host immune response and promotes the development of IBD. It is critical to identify the specific pathogens related to the pathogenesis of IBD. An in-depth understanding of various pathogenic factors is of great significance for the early detection of IBD. This review highlights the role of gut microbiota in the pathogenesis of IBD and provides a theoretical basis for the personalized approaches that modulate the gut microbiota to treat IBD.
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Affiliation(s)
- Peng Qiu
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Takatsugu Ishimoto
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
- Gastrointestinal Cancer Biology, International Research Center for Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Lingfeng Fu
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
- Gastrointestinal Cancer Biology, International Research Center for Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Jun Zhang
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
- Gastrointestinal Cancer Biology, International Research Center for Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Zhenyong Zhang
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yang Liu
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
- *Correspondence: Yang Liu, ; orcid.org/0000-0002-2129-9086
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Zhang Z, Yu PF, Gu GL, Zhang YH, Wang YM, Dong ZW, Yang HR. Diffuse invasive signet ring cell carcinoma in total colorectum caused by ulcerative colitis: A case report and review of literature. World J Clin Cases 2022; 10:1729-1737. [PMID: 35211616 PMCID: PMC8855258 DOI: 10.12998/wjcc.v10.i5.1729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 12/05/2021] [Accepted: 12/28/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Diffuse invasive signet ring cell carcinoma of the colorectum is extremely rare clinically. This type of colorectal cancer has certain clinical, pathological and biological characteristics that are different from ordinary colorectal cancer.
CASE SUMMARY A 31-year-old young woman was admitted to the hospital for nearly 1 wk due to recurrent symptoms of mucopurulent bloody stools and abdominal distension. Preoperative colonoscopy showed a ring-shaped intestinal wall mass 10 cm from the rectum to the anus. Three pieces of tumor tissue were removed for examination. The pathological results showed rectal mucinous adenocarcinoma. The patient underwent laparoscopic exploration under general anesthesia, and then laparoscopic total colorectal resection, ileal pouch–anal anastomosis and ileostomy were performed. The patient was switched to a FOLFOX + cetuximab regimen. After the fifth cycle, the patient was unable to tolerate further treatment due to tumor progression and multiple organ dysfunction, and died at the end of May 2020. Overall survival was 7 mo.
CONCLUSION Carcinogenesis of ulcerative colitis is different from sporadic colon cancer, and the overall prognosis is extremely poor.
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Affiliation(s)
- Zhi Zhang
- Department of General Surgery, Air Force Medical Center, Chinese People's Liberation Army, Beijing 100142, China
| | - Peng-Fei Yu
- Department of General Surgery, Air Force Medical Center, Chinese People's Liberation Army, Beijing 100142, China
| | - Guo-Li Gu
- Department of General Surgery, Air Force Medical Center, Chinese People's Liberation Army, Beijing 100142, China
| | - Yu-Hui Zhang
- Department of General Surgery, Air Force Medical Center, Chinese People's Liberation Army, Beijing 100142, China
- Graduate School, Hebei North University, Zhangjiakou 075000, Hebei Province, China
| | - Yu-Ming Wang
- Health Team, 93656 Troop of Chinese People's Liberation Army, Beijing 101113, China
| | - Zhi-Wei Dong
- Department of General Surgery, Air Force Medical Center, Chinese People's Liberation Army, Beijing 100142, China
| | - Hai-Rui Yang
- Department of General Surgery, Air Force Medical Center, Chinese People's Liberation Army, Beijing 100142, China
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Sirven MA, Venancio VP, Shankar S, Klemashevich C, Castellón-Chicas MJ, Fang C, Mertens-Talcott SU, Talcott ST. Ulcerative colitis results in differential metabolism of cranberry polyphenols by the colon microbiome in vitro. Food Funct 2021; 12:12751-12764. [PMID: 34847216 DOI: 10.1039/d1fo03047g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The microbiome plays a major role in polyphenol metabolism, producing metabolites that are bioavailable and potentially more bioactive than the compounds from which they are derived. However, the microbiome can vary among individuals, and especially for those with co-morbidities, such as ulcerative colitis. In subjects with ulcerative colitis, the consequence of a 'dysbiotic' microbiome is characterized by decreased diversity of microbiota that may impact their capability to metabolize polyphenols into bioavailable metabolites. On this premise, the microbiome metabolism of cranberry polyphenols between healthy individuals and those with ulcerative colitis was compared in vitro. Fecal samples from volunteers, with or without diagnosed ulcerative colitis, were cultured anaerobically in the presence of cranberry polyphenols. The resulting metabolites were then quantified via LC-ESI-MS/MS. 16S rRNA metagenomics analysis was also utilized to assess differences in microbiota composition between healthy and ulcerative colitis microbiomes and the modulatory effects of cranberry polyphenols on microbiota composition. Healthy microbiomes produced higher (p < 0.05) concentrations of 5-(3',4'-dihydroxyphenyl)-gamma-valerolactone and 3-hydroxyphenylacetic acid in comparison to ulcerative colitis microbiomes. Additionally, healthy microbiomes contained a higher (p < 0.05) abundance of Ruminococcaceae, which could explain their ability to produce higher concentrations of cranberry polyphenol metabolites. Health status and the presence of cranberry polyphenols also significantly impacted the production of several short-chain and branched-chain fatty acids. These results suggest that efficiency of polyphenol metabolism is dependent on microbiota composition and future works should include metabolite data to account for inter-individual differences in polyphenol metabolism.
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Affiliation(s)
- Maritza Ashton Sirven
- Department of Nutrition and Food Science, Texas A&M University, College Station, Texas, USA.
| | - Vinicius Paula Venancio
- Department of Nutrition and Food Science, Texas A&M University, College Station, Texas, USA.
| | - Smriti Shankar
- Integrated Metabolomics Analysis Core, Texas A&M University, College Station, TX, USA
| | - Cory Klemashevich
- Integrated Metabolomics Analysis Core, Texas A&M University, College Station, TX, USA
| | | | - Chuo Fang
- Department of Nutrition and Food Science, Texas A&M University, College Station, Texas, USA.
| | | | - Stephen T Talcott
- Department of Nutrition and Food Science, Texas A&M University, College Station, Texas, USA.
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A prospective interventional trial on the effect of periodontal treatment on Fusobacterium nucleatum abundance in patients with colorectal tumours. Sci Rep 2021; 11:23719. [PMID: 34887459 PMCID: PMC8660914 DOI: 10.1038/s41598-021-03083-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 11/26/2021] [Indexed: 12/09/2022] Open
Abstract
Fusobacterium nucleatum is associated with the progression of colorectal cancer. Thus, the possibility of preventing colorectal cancer or its progression by targeting F. nucleatum has been explored. As F. nucleatum is associated with periodontitis, we analysed whether treating periodontitis could influence F. nucleatum abundance in the colon. Patients with colorectal tumours who underwent colonoscopy were recruited. Patients diagnosed with periodontitis by a dentist were treated for approximately 3 months. Endoscopic resection of colorectal tumours was performed after periodontitis treatment, and resected tumours were pathologically classified as high-(HGD) or low-grade dysplasia (LGD). Saliva and stool samples were collected before and after the treatment. Of the 58 patients with colorectal tumours, 31 were included in the study, 16 showed improvement in periodontitis, and 11 showed no improvement. Stool F. nucleatum levels before treatment were significantly lower in the LGD group than in the HGD group. A significant decrease in faecal F. nucleatum levels was observed in patients who underwent successful treatment but not in those whose treatment failed. Salivary F. nucleatum levels were not altered in patients despite periodontal treatment. Thus, successful periodontitis treatment reduces stool F. nucleatum levels and may aid research on periodontitis and suppression of colorectal cancer development.
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Shao HQ, Tan ZJ. Microbiota-targeted therapeutics in gastrointestinal diseases. Shijie Huaren Xiaohua Zazhi 2021; 29:841-848. [DOI: 10.11569/wcjd.v29.i15.841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
In recent years, more and more diseases have been found to be related to dysbiosis. In particular, some disruptive discoveries in the past five years have made gut microbiota a hot topic in the field of health and diseases. As an important coordinator of biological processes and a common participant in the occurrence and development of multiple diseases, coupled with the plasticity of its composition and function, the gut microbiota has gradually become an attractive target for the intervention and management of diseases, arousing great attention of researchers. In this paper, we summarize the relationship between gut microbiota and irritable bowel syndrome, inflammatory bowel disease, and colorectal cancer. Then, we introduce the current status of microbiota-targeted therapeutics in gastrointestinal diseases.
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Affiliation(s)
- Hao-Qing Shao
- Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
| | - Zhou-Jin Tan
- Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
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Liu Y, Huang W, Wang J, Ma J, Zhang M, Lu X, Liu J, Kou Y. Multifaceted Impacts of Periodontal Pathogens in Disorders of the Intestinal Barrier. Front Immunol 2021; 12:693479. [PMID: 34386004 PMCID: PMC8353228 DOI: 10.3389/fimmu.2021.693479] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 07/12/2021] [Indexed: 12/12/2022] Open
Abstract
Periodontal disease, a common inflammatory disease, is considered a hazardous factor that contributes to the development of diseases of the digestive system as well as other systems. The bridge between periodontitis and systemic diseases is believed to be periodontal pathogens. The intestine, as part of the lower gastrointestinal tract, has a close connection with the oral cavity. Within the intestine, the intestinal barrier acts as a multifunctional system including microbial, mucous, physical and immune barrier. The intestinal barrier forms the body's first line of defense against external pathogens; its breakdown can lead to pathological changes in the gut and other organs or systems. Reports in the literature have described how oral periodontal pathogens and pathobiont-reactive immune cells can transmigrate to the intestinal mucosa, causing the destruction of intestinal barrier homeostasis. Such findings might lead to novel ideas for investigating the relationship between periodontal disease and other systemic diseases. This review summarizes studies on the effects of periodontal pathogens on the intestinal barrier, which might contribute to understanding the link between periodontitis and gastrointestinal diseases.
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Affiliation(s)
- Yingman Liu
- Department of Periodontics, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - Wenxuan Huang
- School of Stomatology, Shenyang Medical College, Shenyang, China
| | - Jiaqi Wang
- Department of Periodontics, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - Jiaojiao Ma
- Department of Periodontics, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - Manman Zhang
- Department of Oral Biology, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - Xiaoying Lu
- Department of Oral Biology, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - Jie Liu
- Science Experiment Center, China Medical University, Shenyang, China
| | - Yurong Kou
- Department of Periodontics, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
- Department of Oral Biology, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
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Hashimoto-Hill S, Alenghat T. Inflammation-Associated Microbiota Composition Across Domestic Animals. Front Genet 2021; 12:649599. [PMID: 34239536 PMCID: PMC8257562 DOI: 10.3389/fgene.2021.649599] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 05/27/2021] [Indexed: 12/26/2022] Open
Abstract
Domestic animals represent important resources for understanding shared mechanisms underlying complex natural diseases that arise due to both genetic and environmental factors. Intestinal inflammation, particularly inflammatory bowel disease (IBD), is a significant health challenge in humans and domestic animals. While the etiology of IBD is multifactorial, imbalance of symbiotic gut microbiota has been hypothesized to play a central role in disease pathophysiology. Advances in genomic sequencing and analytical pipelines have enabled researchers to decipher the composition of the intestinal microbiota during health and in the context of naturally occurring diseases. This review compiles microbiome genomic data across domestic species and highlights a common occurrence of gut microbiome dysbiosis during idiopathic intestinal inflammation in multiple species, including dogs, cats, horses, cows, and pigs. Current microbiome data obtained from animals with intestinal inflammation are mostly limited to taxonomical analyses in association with broad clinical phenotype. In general, a pathogen or pathosymbiont were not detected. Rather, functional potential of the altered microbiota has been suggested to be one of the key etiologic factors. Among the domestic species studied, canine analyses are currently the most advanced with incorporation of functional profiling of microbiota. Canine IBD parallels features of the disease in humans, thus canines represent a strong natural model for human IBD. While deeper analyses of metagenomic data, coupled with host molecular analyses are needed, comparative studies across domestic species can reveal shared microbial alterations and regulatory mechanisms that will improve our understanding of intestinal inflammation in both animals and humans.
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Affiliation(s)
| | - Theresa Alenghat
- Division of Immunobiology and Center for Inflammation and Tolerance, Cincinnati Children’s Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
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Liu Z, Liao W, Zhang Z, Sun R, Luo Y, Chen Q, Li X, Lu R, Ying Y. Metformin Affects Gut Microbiota Composition and Diversity Associated with Amelioration of Dextran Sulfate Sodium-Induced Colitis in Mice. Front Pharmacol 2021; 12:640347. [PMID: 34122067 PMCID: PMC8191634 DOI: 10.3389/fphar.2021.640347] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 05/10/2021] [Indexed: 01/04/2023] Open
Abstract
Background: Inflammatory bowel disease (IBD) is an increasingly common and globally emergent immune-mediated disorder. The etiology of IBD is complex, involving multiple factors such as immune dysregulation, environmental factors, genetic mutations, and microbiota dysbiosis, exacerbated by a lack of effective clinical therapies. Recently, studies hypothesized that dysbiosis of intestinal flora might participate in the onset of IBD. Metformin is widely used to treat type 2 diabetes and has shown beneficial effects in mouse models of IBD, although its underlying mechanisms remain poorly understood. Accumulating studies found that metformin shows beneficial effects for diabetes by affecting microbiota composition. This study explores possible regulatory effects of metformin on intestinal microecology during treatment for IBD. Methods: Inflammation was induced using 3% Dextran Sulfate Sodium (DSS) solution to generate mice models of IBD. Metformin treatments were assayed by measuring body weights and colon lengths of mice and H&E staining to observe histological effects on colon tissue structures. Changes in bacterial community composition and diversity-related to IBD and metformin treatment were assessed by high-throughput metagenomic sequencing analysis. Results: Metformin administration significantly ameliorated body weight loss, inhibited colon shrinking, and contributed to preserving the integrity of colon histological structures. The gut microbiota profiles revealed that the biodiversity of intestinal flora lost during inflammation was restored under metformin treatment. Metformin administration was also associated with decreased pathogenic Escherichia shigella and increased abundance of Lactobacillus and Akkermansia. Conclusion: Metformin appears to induce anti-inflammatory effects, thus ameliorating colitis symptoms, concurrent with enrichment for beneficial taxa and restored microbial diversity, suggesting a viable strategy against IBD.
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Affiliation(s)
- Zhiyi Liu
- Jiangxi Institute of Respiratory Disease, The First Affiliated Hospital of Nanchang University, Nanchang, China.,Queen Mary School, Nanchang University, Nanchang, China
| | - Wangdi Liao
- Departments of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zihan Zhang
- Jiangxi Institute of Respiratory Disease, The First Affiliated Hospital of Nanchang University, Nanchang, China.,Queen Mary School, Nanchang University, Nanchang, China
| | - Ruipu Sun
- Jiangxi Institute of Respiratory Disease, The First Affiliated Hospital of Nanchang University, Nanchang, China.,Queen Mary School, Nanchang University, Nanchang, China
| | - Yunfei Luo
- Department of Pathophysiology, Schools of Basic Medical Sciences, Nanchang University, Nanchang, China
| | - Qiongfeng Chen
- Department of Pathophysiology, Schools of Basic Medical Sciences, Nanchang University, Nanchang, China
| | - Xin Li
- Departments of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Ruiling Lu
- Departments of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Ying Ying
- Jiangxi Institute of Respiratory Disease, The First Affiliated Hospital of Nanchang University, Nanchang, China.,Department of Pathophysiology, Schools of Basic Medical Sciences, Nanchang University, Nanchang, China.,The Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
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46
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Li DH, Li ZP, Yan Zhang, Zhou GZ, Ren RR, Zhao HJ, Zhang NN, Li JF, Peng LH, Yang YS. Fecal Fusobacterium nucleatum harbored virulence gene fadA are associated with ulcerative colitis and clinical outcomes. Microb Pathog 2021; 157:104964. [PMID: 34022363 DOI: 10.1016/j.micpath.2021.104964] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 04/25/2021] [Accepted: 05/14/2021] [Indexed: 12/12/2022]
Abstract
OBJECT Fusobacterium nucleatum (F.nucleatum), a gram-negative, obligately anaerobe of oral commensal,has been regarded as culprit of periodontal diseases previously and is being unveiled as possible pathogen of gastrointestinal disorders. The key virulence factor of F.nucleatum is FadA adhesin for binding and invading of the host's epithelial cells. Here, we detected fecal F.nucleatum and virulence gene fadA in patients with ulcerative colitis(UC) and evaluated the clinical relevance with UC. METHODS AND SUBJECTS A total of 310 subjects were enrolled including 100 patients with UC, 70 healthy controls (HC), 70 patients with irritable bowel syndrome subtype diarrhea(IBS-D), and 70 colorectal cancer patients(CRC). Stool samples of UC patients compared with healthy controls as well as IBS-D and CRC patients were collected for Polymerase Chain Reaction(PCR) detection of F.nucleatum (based on 16s rRNA) and virulence gene fadA. RESULTS The detection rate of 16s rRNA based PCR for F.nucleatum of UC patients(39/100, 39.00%) and CRC(26/70, 37.14%) patients are significantly higher than HC (12/70, 17.14%, P < 0.01) and IBS-D patients (14/70, 20.00%, P < 0.01). Moreover, 19 samples were detected fadA positive from 39 F.nucleatum positive samples of UC patients (19/39, 48.72%), which is significantly higher than HC(2/12, 16.66%, P < 0.05). There were 3 samples detected fadA positive from 14 F.nucleatum positive samples of IBS-D patients(3/14, 21.43%) and 13 out of 26(50.00%) of CRC patients, which were both no significant differences compared with UC patients(21.4% vs 48.72%, P > 0.05; 50.00% vs 48.72%, P > 0.05). For both F.nucleatum and fadA gene positive patients, there were no statistical significances between erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), white blood cells(WBC), and hemoglobin compared with negative patients(defined by either F.nucleatum or fadA negative, or both negative). However, it is worth noting that detection rate of F.nucleatum with virulence gene fadA in patients of severe ulcerative colitis was significantly higher than patients with mild and moderate colitis(28.89% vs 10.91%, P < 0.05). In addition, the fecal F.nucleatum and fadA gene positive patients were more likely to have pancolitis other than left-sided colitis(pancolitis/left-sided colitis: 26.92% vs 10.42%, P < 0.05). CONCLUSIONS The presence of F.nucleatum and fadA gene increased in UC patients, especially in patients with severe colitis and pancolitis. Strains of F.nucleatum harbored virulence gene fadA are suggested to play a role in the pathogenesis of UC.
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Affiliation(s)
- Dong-Hao Li
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Zheng-Peng Li
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Yan Zhang
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Guan-Zhou Zhou
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Rong-Rong Ren
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Hui-Jun Zhao
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Na-Na Zhang
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Jian-Feng Li
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Li-Hua Peng
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese People's Liberation Army General Hospital, Beijing, China.
| | - Yun-Sheng Yang
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese People's Liberation Army General Hospital, Beijing, China.
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47
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Maldonado-Arriaga B, Sandoval-Jiménez S, Rodríguez-Silverio J, Lizeth Alcaráz-Estrada S, Cortés-Espinosa T, Pérez-Cabeza de Vaca R, Licona-Cassani C, Gámez-Valdez JS, Shaw J, Mondragón-Terán P, Hernández-Cortez C, Suárez-Cuenca JA, Castro-Escarpulli G. Gut dysbiosis and clinical phases of pancolitis in patients with ulcerative colitis. Microbiologyopen 2021; 10:e1181. [PMID: 33970546 PMCID: PMC8087925 DOI: 10.1002/mbo3.1181] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 02/27/2021] [Accepted: 03/03/2021] [Indexed: 12/22/2022] Open
Abstract
Ulcerative colitis (UC) is a frequent type of inflammatory bowel disease, characterized by periods of remission and exacerbation. Gut dysbiosis may influence pathophysiology and clinical response in UC. The purpose of this study was to evaluate whether gut microbiota is related to the active and remission phases of pancolitis in patients with UC as well as in healthy participants. Fecal samples were obtained from 18 patients with UC and clinical‐endoscopic evidenced pancolitis (active phase n = 9 and remission phase n = 9), as well as 15 healthy participants. After fecal DNA extraction, the 16S rRNA gene was amplified and sequenced (Illumina MiSeq), operational taxonomic units were analyzed with the QIIME software. Gut microbiota composition revealed a higher abundance of the phyla Proteobacteria and Fusobacteria in active pancolitis, as compared with remission and healthy participants. Likewise, a marked abundance of the genus Bilophila and Fusobacteria were present in active pancolitis, whereas a higher abundance of Faecalibacterium characterized both remission and healthy participants. LEfSe analysis showed that the genus Roseburia and Faecalibacterium were enriched in remission pancolitis, and genera Bilophila and Fusobacterium were enriched in active pancolitis. The relative abundance of Fecalibacterium and Roseburia showed a higher correlation with fecal calprotectin, while Bilophila and Fusobacterium showed AUCs (area under the curve) of 0.917 and 0.988 for active vs. remission pancolitis. The results of our study highlight the relation of gut dysbiosis with clinically relevant phases of pancolitis in patients with UC. Particularly, Fecalibacterium, Roseburia, Bilophila, and Fusobacterium were identified as genera highly related to the different clinical phases of pancolitis.
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Affiliation(s)
- Brenda Maldonado-Arriaga
- Laboratorio de Metabolismo Experimental e Investigación Clínica, División de Investigación Clínica, C.M.N. "20 de Noviembre", ISSSTE and Hospital General de 2A Troncoso, Instituto Mexicano del Seguro Social, Ciudad de México, México.,Laboratorio de Investigación Clínica y Ambiental, Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, México
| | - Sergio Sandoval-Jiménez
- Laboratorio de Metabolismo Experimental e Investigación Clínica, División de Investigación Clínica, C.M.N. "20 de Noviembre", ISSSTE and Hospital General de 2A Troncoso, Instituto Mexicano del Seguro Social, Ciudad de México, México
| | | | | | - Tomás Cortés-Espinosa
- Clínica de Enfermedad Inflamatoria Intestinal, Servicio de Gastroenterología, C.M.N. "20 de Noviembre", ISSSTE, Ciudad de México, México
| | - Rebeca Pérez-Cabeza de Vaca
- Coordinación de Investigación y División de Investigación Biomédica, C.M.N. "20 de Noviembre", ISSSTE, Ciudad de México, México
| | - Cuauhtémoc Licona-Cassani
- Laboratorio de Genómica Industrial, Centro de Biotecnología FEMSA, Tecnológico de Monterrey, Monterrey, NL, Mexico
| | - July Stephany Gámez-Valdez
- Laboratorio de Genómica Industrial, Centro de Biotecnología FEMSA, Tecnológico de Monterrey, Monterrey, NL, Mexico
| | - Jonathan Shaw
- Department of Infection, Immunity & Cardiovascular Disease, University of Sheffield Medical School, Sheffield, UK
| | - Paul Mondragón-Terán
- Coordinación de Investigación y División de Investigación Biomédica, C.M.N. "20 de Noviembre", ISSSTE, Ciudad de México, México
| | - Cecilia Hernández-Cortez
- Laboratorio de Bioquímica Microbiana, Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, México
| | - Juan Antonio Suárez-Cuenca
- Laboratorio de Metabolismo Experimental e Investigación Clínica, División de Investigación Clínica, C.M.N. "20 de Noviembre", ISSSTE and Hospital General de 2A Troncoso, Instituto Mexicano del Seguro Social, Ciudad de México, México
| | - Graciela Castro-Escarpulli
- Laboratorio de Investigación Clínica y Ambiental, Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, México
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48
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Yang Q, Tian S, Liu Z, Dong W. Knockdown of RIPK2 Inhibits Proliferation and Migration, and Induces Apoptosis via the NF-κB Signaling Pathway in Gastric Cancer. Front Genet 2021; 12:627464. [PMID: 33633788 PMCID: PMC7900563 DOI: 10.3389/fgene.2021.627464] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 01/13/2021] [Indexed: 01/17/2023] Open
Abstract
RIPK2 is a 62 kDa protein and a member of the receptor interacting protein kinases (RIPK) family. It was previously demonstrated that RIPK2 might play a role in promoting malignant tumor progression; however, the precise function of RIPK2 in the onset and progression of gastric cancer (GC) remains unclear. In the current study, we investigated the role of RIPK2 in GC. First, we explored the expression levels of RIPK2 in multiple cancers, including GC, using a bioinformatics approach. We constructed the RIPK2-associated protein-protein interaction network using the search tool for the retrieval of interacting genes/proteins for gene ontology and Kyoto encyclopedia of genes and genomes analysis. Next, we compared the RIPK2 expression levels between GC cells and normal gastric mucosal epithelial cell (GES-1) using reverse transcription quantitative PCR analysis. We downregulated the expression of RIPK2 in GC cells to determine the effects of RIPK2 on cell growth, migration, and apoptosis. Finally, we used western blotting to investigate the RIPK2 downstream signaling pathway involved in the regulation of GC progression. Our results showed that RIPK2 was overexpressed in various tumor tissues, including GC, compared to non-cancer tissues. Moreover, RIPK2 expression was significantly upregulated in all four GC cell lines (MGC-803,SGC-7901, HGC-27 and AGS) comparing the GES-1 cells. Silencing of RIPK2 suppressed GC cell growth by inhibiting migration, and inducing apoptosis through the nuclear factor-κB (NF-κB) signaling pathway. In summary, we demonstrate that RIPK2 plays an important role in modulating GC cell proliferation, migration, and apoptosis through the NF-κB signaling pathway. Therefore, RIPK2 functions as a potential oncogene. We believe that RIPK2 can be used as a candidate biomarker, as well as a diagnostic tool, and the therapeutic target for GC.
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Affiliation(s)
- Qian Yang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.,Key Laboratory of Hubei Province for Digestive System Disease, Wuhan, China.,Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Shan Tian
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhengru Liu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.,Key Laboratory of Hubei Province for Digestive System Disease, Wuhan, China.,Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Weiguo Dong
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.,Key Laboratory of Hubei Province for Digestive System Disease, Wuhan, China
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49
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Brennan CA, Clay SL, Lavoie SL, Bae S, Lang JK, Fonseca-Pereira D, Rosinski KG, Ou N, Glickman JN, Garrett WS. Fusobacterium nucleatum drives a pro-inflammatory intestinal microenvironment through metabolite receptor-dependent modulation of IL-17 expression. Gut Microbes 2021; 13:1987780. [PMID: 34781821 PMCID: PMC8604392 DOI: 10.1080/19490976.2021.1987780] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/17/2021] [Accepted: 09/16/2021] [Indexed: 02/04/2023] Open
Abstract
The colorectal cancer (CRC)-associated microbiota creates a pro-tumorigenic intestinal milieu and shapes immune responses within the tumor microenvironment. However, how oncomicrobes - like Fusobacterium nucleatum, found in the oral cavity and associated with CRC tissues- affect these distinct aspects of tumorigenesis is difficult to parse. Herein, we found that neonatal inoculation of ApcMin/+ mice with F. nucleatum strain Fn7-1 circumvents technical barriers preventing its intestinal colonization, drives colonic Il17a expression prior to tumor formation, and potentiates intestinal tumorigenesis. Using gnotobiotic mice colonized with a minimal complexity microbiota (the altered Schaedler's flora), we observed that intestinal Fn7-1 colonization increases colonic Th17 cell frequency and their IL-17A and IL-17F expression, along with a concurrent increase in colonic lamina propria Il23p19 expression. As Fn7-1 stably colonizes the intestinal tract in our models, we posited that microbial metabolites, specifically short-chain fatty acids (SCFA) that F. nucleatum abundantly produces in culture and, as we demonstrate, in the intestinal tract, might mediate part of its immunomodulatory effects in vivo. Supporting this hypothesis, we found that Fn7-1 did not alter RORγt+ CD4+T cell frequency in the absence of the SCFA receptor FFAR2. Taken together, our work suggests that F. nucleatum influences intestinal immunity by shaping Th17 responses in an FFAR2-dependent manner, although further studies are necessary to clarify the precise and multifaceted roles of FFAR2. The potential to increase intestinal Th17 responses is shared by another oncomicrobe, enterotoxigenic Bacteroides fragilis, highlighting a conserved pathway that could potentially be targeted to slow oncomicrobe-mediated CRC.
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Affiliation(s)
- Caitlin A. Brennan
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Harvard T. H. Chan Microbiome in Public Health Center, Boston, Massachusetts
| | - Slater L. Clay
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Harvard T. H. Chan Microbiome in Public Health Center, Boston, Massachusetts
| | - Sydney L. Lavoie
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Harvard T. H. Chan Microbiome in Public Health Center, Boston, Massachusetts
| | - Sena Bae
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Harvard T. H. Chan Microbiome in Public Health Center, Boston, Massachusetts
| | - Jessica K. Lang
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Harvard T. H. Chan Microbiome in Public Health Center, Boston, Massachusetts
| | - Diogo Fonseca-Pereira
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Harvard T. H. Chan Microbiome in Public Health Center, Boston, Massachusetts
| | - Kathryn G. Rosinski
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Harvard T. H. Chan Microbiome in Public Health Center, Boston, Massachusetts
| | - Nora Ou
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Harvard T. H. Chan Microbiome in Public Health Center, Boston, Massachusetts
| | - Jonathan N. Glickman
- Department of Pathology, Harvard Medical School, Boston, Massachusetts
- Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Wendy S. Garrett
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Harvard T. H. Chan Microbiome in Public Health Center, Boston, Massachusetts
- Broad Institute of Harvard and MIT, Cambridge, Massachusetts
- Department and Division of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
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50
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Zhuang X, Liu C, Zhan S, Tian Z, Li N, Mao R, Zeng Z, Chen M. Gut Microbiota Profile in Pediatric Patients With Inflammatory Bowel Disease: A Systematic Review. Front Pediatr 2021; 9:626232. [PMID: 33604319 PMCID: PMC7884334 DOI: 10.3389/fped.2021.626232] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 01/05/2021] [Indexed: 12/12/2022] Open
Abstract
Background and Aim: Accumulating evidence have implicated gut microbiota alterations in pediatric and adult patients with inflammatory bowel disease (IBD); however, the results of different studies are often inconsistent and even contradictory. It is believed that early changes in new-onset and treatment-naïve pediatric patients are more informative. We performed a systematic review to investigate the gut microbiota profiles in pediatric IBD and identify specific microbiota biomarkers associated with this disorder. Methods: Electronic databases were searched from inception to 31 July 2020 for studies that observed gut microbiota alterations in pediatric patients with IBD. Study quality was assessed using the Newcastle-Ottawa scale. Results: A total of 41 original studies investigating gut microbiota profiles in pediatric patients with IBD were included in this review. Several studies have reported a decrease in α-diversity and an overall difference in β-diversity. Although no specific gut microbiota alterations were consistently reported, a gain in Enterococcus and a significant decrease in Anaerostipes, Blautia, Coprococcus, Faecalibacterium, Roseburia, Ruminococcus, and Lachnospira were found in the majority of the included articles. Moreover, there is insufficient data to show specific microbiota bacteria associated with disease activity, location, and behavior in pediatric IBD. Conclusions: This systematic review identified evidence for differences in the abundance of some bacteria in pediatric patients with IBD when compared to patients without IBD; however, no clear overall conclusion could be drawn from the included studies due to inconsistent results and heterogeneous methodologies. Further studies with large samples that follow more rigorous and standardized methodologies are needed.
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Affiliation(s)
- Xiaojun Zhuang
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Caiguang Liu
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shukai Zhan
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhenyi Tian
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Na Li
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ren Mao
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhirong Zeng
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Minhu Chen
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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