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Mo C, Bi J, Li S, Lin Y, Yuan P, Liu Z, Jia B, Xu S. The influence and therapeutic effect of microbiota in systemic lupus erythematosus. Microbiol Res 2024; 281:127613. [PMID: 38232494 DOI: 10.1016/j.micres.2024.127613] [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: 09/14/2023] [Revised: 12/18/2023] [Accepted: 01/09/2024] [Indexed: 01/19/2024]
Abstract
Systemic erythematosus lupus (SLE) is an autoimmune disease involving multiple organs that poses a serious risk to the health and life of patients. A growing number of studies have shown that commensals from different parts of the body and exogenous pathogens are involved in SLE progression, causing barrier disruption and immune dysregulation through multiple mechanisms. However, they sometimes alleviate the symptoms of SLE. Many factors, such as genetic susceptibility, metabolism, impaired barriers, food, and sex hormones, are involved in SLE, and the microbiota drives the development of SLE either by depending on or interacting with these factors. Among these, the crosstalk between genetic susceptibility, metabolism, and microbiota is a hot topic of research and is expected to lay the groundwork for the amelioration of the mechanism, diagnosis, and treatment of SLE. Furthermore, the microbiota has great potential for the treatment of SLE. Ideally, personalised therapeutic approaches should be developed in combination with more specific diagnostic methods. Herein, we provide a comprehensive overview of the role and mechanism of microbiota in lupus of the intestine, oral cavity, skin, and kidney, as well as the therapeutic potential of the microbiota.
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Affiliation(s)
- Chuzi Mo
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, China
| | - Jiaming Bi
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, China
| | - Siwei Li
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, China
| | - Yunhe Lin
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, China
| | - Peiyan Yuan
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, China
| | - Zhongjun Liu
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, China.
| | - Bo Jia
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, China.
| | - Shuaimei Xu
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, China.
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Dai J, Jiang M, Wang X, Lang T, Wan L, Wang J. Human-derived bacterial strains mitigate colitis via modulating gut microbiota and repairing intestinal barrier function in mice. BMC Microbiol 2024; 24:96. [PMID: 38521930 PMCID: PMC10960398 DOI: 10.1186/s12866-024-03216-5] [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: 07/12/2023] [Accepted: 02/07/2024] [Indexed: 03/25/2024] Open
Abstract
BACKGROUND Unbalanced gut microbiota is considered as a pivotal etiological factor in colitis. Nevertheless, the precise influence of the endogenous gut microbiota composition on the therapeutic efficacy of probiotics in colitis remains largely unexplored. RESULTS In this study, we isolated bacteria from fecal samples of a healthy donor and a patient with ulcerative colitis in remission. Subsequently, we identified three bacterial strains that exhibited a notable ability to ameliorate dextran sulfate sodium (DSS)-induced colitis, as evidenced by increased colon length, reduced disease activity index, and improved histological score. Further analysis revealed that each of Pediococcus acidilactici CGMCC NO.17,943, Enterococcus faecium CGMCC NO.17,944 and Escherichia coli CGMCC NO.17,945 significantly attenuated inflammatory responses and restored gut barrier dysfunction in mice. Mechanistically, bacterial 16S rRNA gene sequencing indicated that these three strains partially restored the overall structure of the gut microbiota disrupted by DSS. Specially, they promoted the growth of Faecalibaculum and Lactobacillus murinus, which were positively correlated with gut barrier function, while suppressing Odoribacter, Rikenella, Oscillibacter and Parasutterella, which were related to inflammation. Additionally, these strains modulated the composition of short chain fatty acids (SCFAs) in the cecal content, leading to an increase in acetate and a decrease in butyrate. Furthermore, the expression of metabolites related receptors, such as receptor G Protein-coupled receptor (GPR) 43, were also affected. Notably, the depletion of endogenous gut microbiota using broad-spectrum antibiotics completely abrogated these protective effects. CONCLUSIONS Our findings suggest that selected human-derived bacterial strains alleviate experimental colitis and intestinal barrier dysfunction through mediating resident gut microbiota and their metabolites in mice. This study provides valuable insights into the potential therapeutic application of probiotics in the treatment of colitis.
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Affiliation(s)
- Juanjuan Dai
- Department of Intensive Care Unit, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, P.R. China
| | - Mingjie Jiang
- Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, P.R. China
| | - Xiaoxin Wang
- Shanghai Key Laboratory of Pancreatic Diseases, Institute of Translational Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tao Lang
- Shanghai Key Laboratory of Pancreatic Diseases, Institute of Translational Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Leilei Wan
- Department of Stomatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Jingjing Wang
- Shanghai Key Laboratory of Pancreatic Diseases, Institute of Translational Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Delaroque C, Chassaing B. Dietary emulsifier consumption accelerates type 1 diabetes development in NOD mice. NPJ Biofilms Microbiomes 2024; 10:1. [PMID: 38182615 PMCID: PMC10770373 DOI: 10.1038/s41522-023-00475-4] [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: 06/15/2023] [Accepted: 12/15/2023] [Indexed: 01/07/2024] Open
Abstract
The rapidly increasing prevalence of type 1 diabetes (T1D) underscores the role of environmental (i.e. non-genetic) determinants of T1D development. Such factors include industrialized diets as well as the intestinal microbiota with which they interact. One component of industrialized diets that deleteriously impact gut microbiota is dietary emulsifiers, which perturb intestinal microbiota to encroach upon their host promoting chronic low-grade intestinal inflammation and metabolic syndrome. Hence, we investigated whether 2 dietary emulsifiers, carboxymethylcellulose (CMC) and polysorbate-80 (P80), might influence the development of T1D in NOD mice, which spontaneously develop this disorder. We observed that chronic emulsifier exposure accelerated T1D development in NOD mice, which was associated with increased insulin autoantibody levels. Such accelerated T1D development was accompanied by compositional and functional alterations of the intestinal microbiota as well as low-grade intestinal inflammation. Moreover, machine learning found that the severity of emulsifier-induced microbiota disruption had partial power to predict subsequent disease development, suggesting that complex interactions occur between the host, dietary factors, and the intestinal microbiota. Thus, perturbation of host-microbiota homeostasis by dietary emulsifiers may have contributed to the post-mid-20th-century increase in T1D.
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Affiliation(s)
- Clara Delaroque
- INSERM U1016, team "Mucosal microbiota in chronic inflammatory diseases", CNRS UMR 8104, Université Paris Cité, Paris, France
| | - Benoit Chassaing
- INSERM U1016, team "Mucosal microbiota in chronic inflammatory diseases", CNRS UMR 8104, Université Paris Cité, Paris, France.
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Xie R, Gu Y, Li M, Li L, Yang Y, Sun Y, Zhou B, Liu T, Wang S, Liu W, Yang R, Su X, Zhong W, Wang B, Cao H. Desulfovibrio vulgaris interacts with novel gut epithelial immune receptor LRRC19 and exacerbates colitis. MICROBIOME 2024; 12:4. [PMID: 38172943 PMCID: PMC10763354 DOI: 10.1186/s40168-023-01722-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 11/15/2023] [Indexed: 01/05/2024]
Abstract
BACKGROUND The overgrowth of Desulfovibrio, an inflammation promoting flagellated bacteria, has been found in ulcerative colitis (UC) patients. However, the molecular mechanism in promoting colitis remains unestablished. METHODS The relative abundance Desulfovibrio vulgaris (D. vulgaris) in stool samples of UC patients was detected. Mice were treated with dextran sulfate sodium to induce colitis with or without administration of D. vulgaris or D. vulgaris flagellin (DVF), and the severity of colitis and the leucine-rich repeat containing 19 (LRRC19) signaling were assessed. The interaction between DVF and LRRC19 was identified by surface plasmon resonance and intestinal organoid culture. Lrrc19-/- and Tlr5-/- mice were used to investigate the indispensable role of LRRC19. Finally, the blockade of DVF-LRRC19 interaction was selected through virtual screening and the efficacy in colitis was assessed. RESULTS D. vulgaris was enriched in fecal samples of UC patients and was correlated with the disease severity. D. vulgaris or DVF treatment significantly exacerbated colitis in germ-free mice and conventional mice. Mechanistically, DVF could interact with LRRC19 (rather than TLR5) in colitis mice and organoids, and then induce the production of pro-inflammatory cytokines. Lrrc19 knockdown blunted the severity of colitis. Furthermore, typhaneoside, a blockade of binding interfaces, blocked DVF-LRRC19 interaction and dramatically ameliorated DVF-induced colitis. CONCLUSIONS D. vulgaris could promote colitis through DVF-LRRC19 interaction. Targeting DVF-LRRC19 interaction might be a new therapeutic strategy for UC therapy. Video Abstract.
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Affiliation(s)
- Runxiang Xie
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Yu Gu
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Mengfan Li
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Lingfeng Li
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Yunwei Yang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Yue Sun
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Bingqian Zhou
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Tianyu Liu
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Sinan Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Wentian Liu
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Rongcun Yang
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Xiaomin Su
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China.
| | - Weilong Zhong
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China.
| | - Bangmao Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China.
| | - Hailong Cao
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China.
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DiMattia Z, Damani JJ, Van Syoc E, Rogers CJ. Effect of Probiotic Supplementation on Intestinal Permeability in Overweight and Obesity: A Systematic Review of Randomized Controlled Trials and Animal Studies. Adv Nutr 2024; 15:100162. [PMID: 38072119 PMCID: PMC10771892 DOI: 10.1016/j.advnut.2023.100162] [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: 08/29/2023] [Revised: 11/27/2023] [Accepted: 12/05/2023] [Indexed: 12/27/2023] Open
Abstract
Overweight and obesity are associated with increased intestinal permeability, characterized by loss of gut epithelial integrity, resulting in unregulated passage of lipopolysaccharide (LPS) and other inflammatory triggers into circulation, i.e., metabolic endotoxemia. In obesity, shifts in the gut microbiome negatively impact intestinal permeability. Probiotics are an intervention that can target the gut microbiome by introducing beneficial microbial species, potentially restoring gut barrier integrity. Currently, the role of probiotic supplementation in ameliorating obesity- and overweight-associated increases in gut permeability has not been reviewed. This systematic review aimed to summarize findings from both animal and clinical studies that evaluated the effect of probiotic supplementation on obesity-induced impairment in intestinal permeability (International Prospective Register of Systematic Reviews, CRD42022363538). A literature search was conducted using PubMed (Medline), Web of Science, and CAB Direct from origin until August 2023 using keywords of intestinal permeability, overweight or obesity, and probiotic supplementation. Of 920 records, 26 eligible records were included, comprising 12 animal and 14 clinical studies. Clinical trials ranged from 3 to 26 wk and were mostly parallel-arm (n = 13) or crossover (n = 1) design. In both animal and clinical studies, plasma/serum LPS was the most common measure of intestinal permeability. Eleven of 12 animal studies reported a positive effect of probiotic supplementation in reducing intestinal permeability. However, results from clinical trials were inconsistent, with half reporting reductions in serum LPS and half reporting no differences after probiotic supplementation. Bifidobacterium, Lactobacillus, and Akkermansia emerged as the most common genera in probiotic formulations among the animal and clinical studies that yielded positive results, suggesting that specific bacteria may be more effective at reducing intestinal permeability and improving gut barrier function. However, better standardization of strain use, dosage, duration, and the delivery matrix is needed to fully understand the probiotic impact on intestinal permeability in individuals with overweight and obesity.
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Affiliation(s)
- Zachary DiMattia
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, United States
| | - Janhavi J Damani
- The Intercollege Graduate Degree Program in Integrative and Biomedical Physiology, Huck Institutes of Life Sciences, The Pennsylvania State University, University Park, PA, United States
| | - Emily Van Syoc
- Integrative and Biomedical Physiology and Clinical and Translational Science, The Pennsylvania State University, University Park, PA, United States; Department of Animal Science, The Pennsylvania State University, University Park, PA, United States; The Microbiome Center, The Pennsylvania State University, University Park, PA, United States
| | - Connie J Rogers
- Department of Nutritional Sciences, College of Family and Consumer Sciences, University of Georgia, Athens, GA, United States.
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Zhang P, Wang X, Li S, Cao X, Zou J, Fang Y, Shi Y, Xiang F, Shen B, Li Y, Fang B, Zhang Y, Guo R, Lv Q, Zhang L, Lu Y, Wang Y, Yu J, Xie Y, Wang R, Chen X, Yu J, Zhang Z, He J, Zhan J, Lv W, Nie Y, Cai J, Xu X, Hu J, Zhang Q, Gao T, Jiang X, Tan X, Xue N, Wang Y, Ren Y, Wang L, Zhang H, Ning Y, Chen J, Zhang L, Jin S, Ren F, Ehrlich SD, Zhao L, Ding X. Metagenome-wide analysis uncovers gut microbial signatures and implicates taxon-specific functions in end-stage renal disease. Genome Biol 2023; 24:226. [PMID: 37828586 PMCID: PMC10571392 DOI: 10.1186/s13059-023-03056-y] [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: 09/28/2022] [Accepted: 09/08/2023] [Indexed: 10/14/2023] Open
Abstract
BACKGROUND The gut microbiota plays a crucial role in regulating host metabolism and producing uremic toxins in patients with end-stage renal disease (ESRD). Our objective is to advance toward a holistic understanding of the gut ecosystem and its functional capacity in such patients, which is still lacking. RESULTS Herein, we explore the gut microbiome of 378 hemodialytic ESRD patients and 290 healthy volunteers from two independent cohorts via deep metagenomic sequencing and metagenome-assembled-genome-based characterization of their feces. Our findings reveal fundamental alterations in the ESRD microbiome, characterized by a panel of 348 differentially abundant species, including ESRD-elevated representatives of Blautia spp., Dorea spp., and Eggerthellaceae, and ESRD-depleted Prevotella and Roseburia species. Through functional annotation of the ESRD-associated species, we uncover various taxon-specific functions linked to the disease, such as antimicrobial resistance, aromatic compound degradation, and biosynthesis of small bioactive molecules. Additionally, we show that the gut microbial composition can be utilized to predict serum uremic toxin concentrations, and based on this, we identify the key toxin-contributing species. Furthermore, our investigation extended to 47 additional non-dialyzed chronic kidney disease (CKD) patients, revealing a significant correlation between the abundance of ESRD-associated microbial signatures and CKD progression. CONCLUSION This study delineates the taxonomic and functional landscapes and biomarkers of the ESRD microbiome. Understanding the role of gut microbiota in ESRD could open new avenues for therapeutic interventions and personalized treatment approaches in patients with this condition.
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Affiliation(s)
- Pan Zhang
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Xifan Wang
- Key Laboratory of Functional Dairy, Department of Nutrition and Health, China Agricultural University, Beijing, 100190, China
| | - Shenghui Li
- Puensum Genetech Institute, Wuhan, 430076, China
| | - Xuesen Cao
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Jianzhou Zou
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Yi Fang
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Yiqin Shi
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Fangfang Xiang
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Bo Shen
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Yixuan Li
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100190, China
| | - Bing Fang
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100190, China
| | - Yue Zhang
- Puensum Genetech Institute, Wuhan, 430076, China
| | - Ruochun Guo
- Puensum Genetech Institute, Wuhan, 430076, China
| | - Qingbo Lv
- Puensum Genetech Institute, Wuhan, 430076, China
| | - Liwen Zhang
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Yufei Lu
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Yaqiong Wang
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Jinbo Yu
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Yeqing Xie
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Ran Wang
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100190, China
| | - Xiaohong Chen
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Jiawei Yu
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Zhen Zhang
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Jingjing He
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100190, China
| | - Jing Zhan
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100190, China
| | - Wenlv Lv
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Yuxin Nie
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Jieru Cai
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Xialian Xu
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Jiachang Hu
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Qi Zhang
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100190, China
| | - Ting Gao
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100190, China
| | - Xiaotian Jiang
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Xiao Tan
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Ning Xue
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Yimei Wang
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Yimei Ren
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100190, China
| | - Li Wang
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Han Zhang
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Yichun Ning
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Jing Chen
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Lin Zhang
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Shi Jin
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China
| | - Fazheng Ren
- Key Laboratory of Functional Dairy, Department of Nutrition and Health, China Agricultural University, Beijing, 100190, China
| | - Stanislav Dusko Ehrlich
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, Queen Square, London, WC1N 3RX, UK.
| | - Liang Zhao
- Key Laboratory of Functional Dairy, Department of Nutrition and Health, China Agricultural University, Beijing, 100190, China.
| | - Xiaoqiang Ding
- Department of Nephrology, Zhongshan Hospital, Fudan University; Hemodialysis Quality Control Center of Shanghai; Shanghai Key Laboratory of Kidney and Blood Purification; Shanghai Institute for Kidney and Dialysis; Shanghai Clinical Medical Center for Kidney Disease, Shanghai, 200032, China.
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7
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An Y, Zhai Z, Wang X, Ding Y, He L, Li L, Mo Q, Mu C, Xie R, Liu T, Zhong W, Wang B, Cao H. Targeting Desulfovibrio vulgaris flagellin-induced NAIP/NLRC4 inflammasome activation in macrophages attenuates ulcerative colitis. J Adv Res 2023; 52:219-232. [PMID: 37586642 PMCID: PMC10555950 DOI: 10.1016/j.jare.2023.08.008] [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: 12/15/2022] [Revised: 08/11/2023] [Accepted: 08/13/2023] [Indexed: 08/18/2023] Open
Abstract
INTRODUCTION The perturbations of gut microbiota could interact with excessively activated immune responses and play key roles in the etiopathogenesis of ulcerative colitis (UC). Desulfovibrio, the most predominant sulfate reducing bacteria (SRB) resided in the human gut, was observed to overgrow in patients with UC. The interactions between specific gut microbiota and drugs and their impacts on UC treatment have not been demonstrated well. OBJECTIVES This study aimed to elucidate whether Desulfovibrio vulgaris (D. vulgaris, DSV) and its flagellin could activate nucleotide-binding oligomerization domain-like receptors (NLR) family of apoptosis inhibitory proteins (NAIP) / NLR family caspase activation and recruitment domain-containing protein 4 (NLRC4) inflammasome and promote colitis, and further evaluate the efficacy of eugeniin targeting the interaction interface of D. vulgaris flagellin (DVF) and NAIP to attenuate UC. METHODS The abundance of DSV and the occurrence of macrophage pyroptosis in human UC tissues were investigated. Colitis in mice was established by dextran sulfate sodium (DSS) and gavaged with DSV or its purified flagellin. NAIP/NLRC4 inflammasome activation and macrophage pyroptosis were evaluated in vivo and in vitro. The effects of eugeniin on blocking the interaction of DVF and NAIP/NLRC4 and relieving colitis were also assessed. RESULTS The abundance of DSV increased in the feces of patients with UC and was found to be associated with disease activity. DSV and its flagellin facilitated DSS-induced colitis in mice. Mechanistically, RNA sequencing showed that gene expression associated with inflammasome complex and pyroptosis was upregulated after DVF treatment in macrophages. DVF was further demonstrated to induce significant macrophage pyroptosis in vitro, depending on NAIP/NLRC4 inflammasome activation. Furthermore, eugeniin was screened as an inhibitor of the interface between DVF and NAIP and successfully alleviated the proinflammatory effect of DVF in colitis. CONCLUSION Targeting DVF-induced NAIP/NLRC4 inflammasome activation and macrophage pyroptosis ameliorates UC. This finding is of great significance for exploring the gut microbiota-host interactions in UC development and providing new insights for precise treatment.
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Affiliation(s)
- Yaping An
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Zihan Zhai
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Xin Wang
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Yiyun Ding
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Linlin He
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Lingfeng Li
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Qi Mo
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Chenlu Mu
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Runxiang Xie
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Tianyu Liu
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Weilong Zhong
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Bangmao Wang
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Hailong Cao
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China.
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Rodrigues E-Lacerda R, Fang H, Robin N, Bhatwa A, Marko DM, Schertzer JD. Microbiota and Nod-like receptors balance inflammation and metabolism during obesity and diabetes. Biomed J 2023; 46:100610. [PMID: 37263539 PMCID: PMC10505681 DOI: 10.1016/j.bj.2023.100610] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/23/2023] [Accepted: 05/26/2023] [Indexed: 06/03/2023] Open
Abstract
Gut microbiota influence host immunity and metabolism during obesity. Bacterial sensors of the innate immune system relay signals from specific bacterial components (i.e., postbiotics) that can have opposing outcomes on host metabolic inflammation. NOD-like receptors (NLRs) such as Nod1 and Nod2 both recruit receptor-interacting protein kinase 2 (RIPK2) but have opposite effects on blood glucose control. Nod1 connects bacterial cell wall-derived signals to metabolic inflammation and insulin resistance, whereas Nod2 can promote immune tolerance, insulin sensitivity, and better blood glucose control during obesity. NLR family pyrin domain containing (NLRP) inflammasomes can also generate divergent metabolic outcomes. NLRP1 protects against obesity and metabolic inflammation potentially because of a bias toward IL-18 regulation, whereas NLRP3 appears to have a bias toward IL-1β-mediated metabolic inflammation and insulin resistance. Targeting specific postbiotics that improve immunometabolism is a key goal. The Nod2 ligand, muramyl dipeptide (MDP) is a short-acting insulin sensitizer during obesity or during inflammatory lipopolysaccharide (LPS) stress. LPS with underacylated lipid-A antagonizes TLR4 and counteracts the metabolic effects of inflammatory LPS. Providing underacylated LPS derived from Rhodobacter sphaeroides improved insulin sensitivity in obese mice. Therefore, certain types of LPS can generate metabolically beneficial metabolic endotoxemia. Engaging protective adaptive immunoglobulin immune responses can also improve blood glucose during obesity. A bacterial vaccine approach using an extract of the entire bacterial community in the upper gut promotes protective adaptive immune response and long-lasting improvements in blood glucose control. A key future goal is to identify and combine postbiotics that cooperate to improve blood glucose control.
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Affiliation(s)
- Rodrigo Rodrigues E-Lacerda
- Department of Biochemistry and Biomedical Sciences, Farncombe Family Digestive Health Research Institute, And Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, Ontario, Canada
| | - Han Fang
- Department of Biochemistry and Biomedical Sciences, Farncombe Family Digestive Health Research Institute, And Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, Ontario, Canada
| | - Nazli Robin
- Department of Biochemistry and Biomedical Sciences, Farncombe Family Digestive Health Research Institute, And Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, Ontario, Canada
| | - Arshpreet Bhatwa
- Department of Biochemistry and Biomedical Sciences, Farncombe Family Digestive Health Research Institute, And Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, Ontario, Canada
| | - Daniel M Marko
- Department of Biochemistry and Biomedical Sciences, Farncombe Family Digestive Health Research Institute, And Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, Ontario, Canada
| | - Jonathan D Schertzer
- Department of Biochemistry and Biomedical Sciences, Farncombe Family Digestive Health Research Institute, And Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, Ontario, Canada.
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9
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Kordahi MC, Delaroque C, Bredèche MF, Gewirtz AT, Chassaing B. Vaccination against microbiota motility protects mice from the detrimental impact of dietary emulsifier consumption. PLoS Biol 2023; 21:e3002289. [PMID: 37725584 PMCID: PMC10508614 DOI: 10.1371/journal.pbio.3002289] [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: 03/06/2023] [Accepted: 08/07/2023] [Indexed: 09/21/2023] Open
Abstract
Dietary emulsifiers, including carboxymethylcellulose (CMC) and polysorbate 80 (P80), perturb gut microbiota composition and gene expression, resulting in a microbiota with enhanced capacity to activate host pro-inflammatory gene expression and invade the intestine's inner mucus layer. Such microbiota alterations promote intestinal inflammation, which can have a variety of phenotypic consequences including increased adiposity. Bacterial flagellin is a key mediator of emulsifiers' impact in that this molecule enables motility and is itself a pro-inflammatory agonist. Hence, we reasoned that training the adaptive mucosal immune system to exclude microbes that express flagellin might protect against emulsifiers. Investigating this notion found that immunizing mice with flagellin elicited an increase in mucosal anti-flagellin IgA and IgA-coated microbiota that would have otherwise developed in response to CMC and P80 consumption. Yet, eliciting these responses in advance via flagellin immunization prevented CMC/P80-induced increases in microbiota expression of pro-inflammatory agonists including LPS and flagellin. Furthermore, such immunization prevented CMC/P80-induced microbiota encroachment and deleterious pro-inflammatory consequences associated therewith, including colon shortening and increased adiposity. Hence, eliciting mucosal immune responses to pathobiont surface components, including flagellin, may be a means of combatting the array of inflammatory diseases that are promoted by emulsifiers and perhaps other modern microbiota stressors.
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Affiliation(s)
- Melissa C. Kordahi
- INSERM U1016, Team “Mucosal microbiota in chronic inflammatory diseases”, CNRS UMR 8104, Université Paris Cité, Paris, France
| | - Clara Delaroque
- INSERM U1016, Team “Mucosal microbiota in chronic inflammatory diseases”, CNRS UMR 8104, Université Paris Cité, Paris, France
| | - Marie-Florence Bredèche
- INSERM U1016, Team “Robustness and evolvability of life”, CNRS UMR 8104, Université Paris Cité, Paris, France
| | - Andrew T. Gewirtz
- Institute for Biomedical Sciences, Centre for Inflammation, Immunity and Infection, Digestive Disease Research Group, Georgia State University, Atlanta, Georgia, United States of America
| | - Benoit Chassaing
- INSERM U1016, Team “Mucosal microbiota in chronic inflammatory diseases”, CNRS UMR 8104, Université Paris Cité, Paris, France
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10
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Liu Y, Liao F. Vaccination therapy for inflammatory bowel disease. Hum Vaccin Immunother 2023; 19:2259418. [PMID: 37771317 PMCID: PMC10543345 DOI: 10.1080/21645515.2023.2259418] [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: 07/03/2023] [Accepted: 09/12/2023] [Indexed: 09/30/2023] Open
Abstract
Recently, several novel medications, such as Ustekinumab, Infliximab, and Vedolizumab, have emerged as potential options for inflammatory bowel disease(IBD) management. Despite achieving some effects in clinical applications, these therapies are still plagued by inadequate response rates and adverse side effects. With rapid progress in immunological research, therapeutic vaccines are gaining traction as an alternative. These vaccines aim to activate the body's immune system to generate specific antibodies, thereby offering a potential avenue for treating IBD. The efficacy and safety of vaccines, coupled with their potential to mitigate the financial and healthcare burden associated with disease treatment, render therapeutic vaccines a more favorable approach for managing patients with IBD. In this review, we critically examine the existing literature pertaining to therapeutic vaccines for IBD, aiming to offer researchers a comprehensive understanding of their applications and prospects and stimulate novel vaccine development by presenting innovative ideas in this field.
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Affiliation(s)
- Yafei Liu
- Department of Gastroenterology, Wuhan University, Wuhan, Hubei, China
| | - Fei Liao
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
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11
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Chen X, Elson CO, Dunkin D. Epicutaneous Immunotherapy with CBir1 Alleviates Intestinal Inflammation. Inflamm Bowel Dis 2023; 29:798-807. [PMID: 36651798 PMCID: PMC10152294 DOI: 10.1093/ibd/izac261] [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: 08/25/2022] [Indexed: 01/19/2023]
Abstract
BACKGROUND Inflammatory bowel disease may be due to failed tolerance to normal gut bacteria. We demonstrate that epicutaneous immunotherapy (ET) to ovalbumin can alleviate colitis in murine models. However, most people are tolerant to or have anergy to ovalbumin. Half of Crohn's disease (CD) patients have CBir1 antibodies that can be elevated years before CD development. We determined whether ET with a CBir1 multi-epitope peptide (MEP1) could alleviate colitis. METHODS Wild type mice (C57BL/6) were transferred with CBir1 T cell receptor (TCR) T cells followed by epicutaneous application of MEP1. Proliferating Foxp3+ T cells were measured in mesenteric lymph nodes (LNs), spleen, small intestine, and colon by flow cytometry. Lymphocytes from MEP1 epicutaneously exposed and immunized C57BL/6 mice were cultured with MEP1. Interferon (IFN)-γ production was measured. Colitis was induced by transferring CD4+CD45Rbhi T cells from CBIR1 TCR or C57BL/6 mice into RAG1-/- mice. Mice were treated with ET. Body weight, colon length, colonic cytokine production, histological inflammation, inflammatory genes, and regulatory T cells (Tregs) from lamina propria were measured. RESULTS ET with 10 μg of MEP1 induced CBir1-specific Tregs that migrated to the small intestine and colon and suppressed MEP1-specific IFN-γ production. ET alleviated colitis when the model utilized CBir1 TCR T cells in mice colonized with CBir1 or A4Fla2 positive bacteria. Treated mice had improved colon length and histological inflammation and reduced colonic IFN-γ production. CONCLUSION Epicutaneous immunotherapy with MEP1 induced Tregs that migrate to intestines and suppress inflammation in mice with CBir1 or A4Fla2-positive bacterial colonization. This could be a potential strategy to treat CD and warrants further study.
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Affiliation(s)
- Xin Chen
- Division of Pediatric Gastroenterology and the Mindich Child Health and Development Institute (MCHDI), The Icahn School of Medicine at Mount Sinai (ISMMS), New York, NY, USA
| | - Charles O Elson
- Department of Medicine, Division of Gastroenterology and Hepatology, Heersink School of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - David Dunkin
- Division of Pediatric Gastroenterology and the Mindich Child Health and Development Institute (MCHDI), The Icahn School of Medicine at Mount Sinai (ISMMS), New York, NY, USA
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12
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Song L, Xiong D, Wen Y, Tan R, Kang X, Jiao X, Pan Z. Transcriptome Sequencing Reveals Salmonella Flagellin Activation of Interferon-β-Related Immune Responses in Macrophages. Curr Issues Mol Biol 2023; 45:2798-2816. [PMID: 37185707 PMCID: PMC10136974 DOI: 10.3390/cimb45040183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/20/2023] [Accepted: 03/22/2023] [Indexed: 03/30/2023] Open
Abstract
The flagellin (FliC) of Salmonella typhimurium is a potential vaccine adjuvant as it can activate innate immunity and promote acquired immune responses. Macrophages are an important component of the innate immune system. The mechanism of flagellin’s adjuvant activity has been shown to be related to its ability to activate macrophages. However, few studies have comprehensively investigated the effects of Salmonella flagellin in macrophages using transcriptome sequencing. In this study, RNA-Seq was used to analyze the expression patterns of RAW264.7 macrophages induced by FliC to identify novel transcriptomic signatures in macrophages. A total of 2204 differentially expressed genes were found in the FliC-treated group compared with the control. Gene ontology and KEGG pathway analyses identified the top significantly regulated functional classification and canonical pathways, which were mainly related to immune responses and regulation. Inflammatory cytokines (IL-6, IL-1β, TNF-α, etc.) and chemokines (CXCL2, CXCL10, CCL2, etc.) were highly expressed in RAW264.7 cells following stimulation. Notably, flagellin significantly increased the expression of interferon (IFN)-β. In addition, previously unidentified IFN regulatory factors (IRFs) and IFN-stimulated genes (ISGs) were also significantly upregulated. The results of RNA-Seq were verified, and furthermore, we demonstrated that flagellin increased the expression of IFN-β and IFN-related genes (IRFs and ISGs) in bone marrow-derived dendritic cells and macrophages. These results suggested that Salmonella flagellin can activate IFN-β-related immune responses in macrophages, which provides new insight into the immune mechanisms of flagellin adjuvant.
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13
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Xu J, Xu J, Shi T, Zhang Y, Chen F, Yang C, Guo X, Liu G, Shao D, Leong KW, Nie G. Probiotic-Inspired Nanomedicine Restores Intestinal Homeostasis in Colitis by Regulating Redox Balance, Immune Responses, and the Gut Microbiome. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2207890. [PMID: 36341495 DOI: 10.1002/adma.202207890] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/26/2022] [Indexed: 06/16/2023]
Abstract
Microbiota-based therapeutics offer innovative strategies to treat inflammatory bowel diseases (IBDs). However, the poor clinical outcome so far and the limited flexibility of the bacterial approach call for improvement. Inspired by the health benefits of probiotics in alleviating symptoms of bowel diseases, bioartificial probiotics are designed to restore the intestinal microenvironment in colitis by regulating redox balance, immune responses, and the gut microbiome. The bioartificial probiotic comprises two components: an E. coli Nissle 1917-derived membrane (EM) as the surface and the biodegradable diselenide-bridged mesoporous silica nanoparticles (SeM) as the core. When orally administered, the probiotic-inspired nanomedicine (SeM@EM) adheres strongly to the mucus layer and restored intestinal redox balance and immune regulation homeostasis in a murine model of acute colitis induced by dextran sodium sulfate. In addition, the respective properties of the EM and SeM synergistically alter the gut microbiome to a favorable state by increasing the bacterial diversity and shifting the microbiome profile to an anti-inflammatory phenotype. This work suggests a safe and effective nanomedicine that can restore intestinal homeostasis for IBDs therapy.
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Affiliation(s)
- Jiaqi Xu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Junchao Xu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Tongfei Shi
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong, 510006, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangdong, 510006, China
| | - Yinlong Zhang
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fangman Chen
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong, 510006, China
| | - Chao Yang
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong, 510006, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangdong, 510006, China
- Department of Biomedical Engineering, Columbia University, New York, NY, 10027, USA
| | - Xinjing Guo
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Guangna Liu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Dan Shao
- School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, Guangdong, 510006, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangdong, 510006, China
- School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510006, China
| | - Kam W Leong
- Department of Biomedical Engineering, Columbia University, New York, NY, 10027, USA
| | - Guangjun Nie
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
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14
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Bessho S, Grando KCM, Kyrylchuk K, Miller A, Klein-Szanto AJ, Zhu W, Gallucci S, Tam V, Tükel Ç. Systemic exposure to bacterial amyloid curli alters the gut mucosal immune response and the microbiome, exacerbating Salmonella-induced arthritis. Gut Microbes 2023; 15:2221813. [PMID: 37317012 PMCID: PMC10269392 DOI: 10.1080/19490976.2023.2221813] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/30/2023] [Accepted: 05/31/2023] [Indexed: 06/16/2023] Open
Abstract
The Salmonella biofilm-associated amyloid protein, curli, is a dominant instigator of systemic inflammation and autoimmune responses following Salmonella infection. Systemic curli injections or infection of mice with Salmonella Typhimurium induce the major features of reactive arthritis, an autoimmune disorder associated with Salmonella infection in humans. In this study, we investigated the link between inflammation and microbiota in exacerbating autoimmunity. We studied C57BL/6 mice from two sources, Taconic Farms and Jackson Labs. Mice from Taconic Farms have been reported to have higher basal levels of the inflammatory cytokine IL - 17 than do mice from Jackson Labs due to the differences in their microbiota. When we systemically injected mice with purified curli, we observed a significant increase in diversity in the microbiota of Jackson Labs mice but not in that of the Taconic mice. In Jackson Labs, mice, the most striking effect was the expansion of Prevotellaceae. Furthermore, there were increases in the relative abundance of the family Akkermansiaceae and decreases in families Clostridiaceae and Muribaculaceae in Jackson Labs mice. Curli treatment led to significantly aggravated immune responses in the Taconic mice compared to Jackson Labs counterparts. Expression and production of IL - 1β, a cytokine known to promote IL - 17 production, as well as expression of Tnfa increased in the gut mucosa of Taconic mice in the first 24 hours after curli injections, which correlated with significant increases in the number of neutrophils and macrophages in the mesenteric lymph nodes. A significant increase in the expression of Ccl3 in colon and cecum of Taconic mice injected with curli was detected. Taconic mice injected with curli also had elevated levels of inflammation in their knees. Overall, our data suggest that autoimmune responses to bacterial ligands, such as curli, are amplified in individuals with a microbiome that promote inflammation.
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Affiliation(s)
- Shingo Bessho
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, USA
| | - Kaitlyn C. M. Grando
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, USA
| | - Kathrine Kyrylchuk
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, USA
| | - Amanda Miller
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, USA
| | | | - Wenhan Zhu
- Department of Pathology Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Stefania Gallucci
- Division of Innate Immunity, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Vincent Tam
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, USA
| | - Çagla Tükel
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, USA
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15
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Li P, Ma X, Liu D, Wei Y, Li P, Hou H, Yao J, Chen A, Liang Y, Zhou Z, Wang P. A microbiome abundant environment remodels the intestinal microbiota and improves resistance to obesity induced by chlorpyrifos in mice. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 315:120415. [PMID: 36257564 DOI: 10.1016/j.envpol.2022.120415] [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: 07/22/2022] [Revised: 09/23/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
There is a growing consensus that the appropriate microbiome abundant environment actuates microbiota changes to influence human health. Whether living environment reacts on the threat of contaminants and the underlying mechanism remain largely unknown. Therefore, we constructed microbiome abundant environment models, focusing on their regulatory effects on the obesity induced by the exogenous chemical chlorpyrifos (CPF) and the related mechanisms. The results uncovered that the constructed farm and woodland microbiome abundant environment could protect mice against CPF-induced obesity effectively. The microbiome abundant environment regulated CPF-induced microbiota imbalance, characterized by an increase in Lactobacillus abundance. These altered microbiotas modified the intestinal immune system by increasing the expression of Foxp3 and IL-10, and mitigated intestinal barrier injury by upregulating the expression of IL-22 and intestinal tight junction proteins. Fecal microbiota transplantation could receive similar phenotypes on alleviating CPF-induced obesity development. Our results demonstrate that the microbiome abundant environment attenuates exogenous chemical-induced health risks by remodeling the intestinal microbiota, improving the intestinal ecosystem, and preventing intestinal epithelial leakage.
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Affiliation(s)
- Peize Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Xiaoran Ma
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Donghui Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Yimu Wei
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Pengxi Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Haonan Hou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Jianing Yao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Aisong Chen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Yiran Liang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Zhiqiang Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China
| | - Peng Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, China.
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16
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Takeuchi T, Ohno H. IgA in human health and diseases: Potential regulator of commensal microbiota. Front Immunol 2022; 13:1024330. [PMID: 36439192 PMCID: PMC9685418 DOI: 10.3389/fimmu.2022.1024330] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 10/27/2022] [Indexed: 07/29/2023] Open
Abstract
Gut microbiota has extensive and tremendous impacts on human physiology and pathology. The regulation of microbiota is therefore a cardinal problem for the mutualistic relationship, as both microbial overgrowth and excessive immune reactions toward them could potentially be detrimental to host homeostasis. Growing evidence suggests that IgA, the most dominant secretory immunoglobulin in the intestine, regulates the colonization of commensal microbiota, and consequently, the microbiota-mediated intestinal and extra-intestinal diseases. In this review, we discuss the interactions between IgA and gut microbiota particularly relevant to human pathophysiology. We review current knowledge about how IgA regulates gut microbiota in humans and about the molecular mechanisms behind this interaction. We further discuss the potential role of IgA in regulating human diseases by extrapolating experimental findings, suggesting that IgA can be a future therapeutic strategy that functionally modulates gut microbiota.
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Affiliation(s)
- Tadashi Takeuchi
- Laboratory for Intestinal Ecosystem, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Hiroshi Ohno
- Laboratory for Intestinal Ecosystem, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
- Graduate School of Medical Life Science, Yokohama City University, Yokohama, Japan
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17
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Immunogenic Modification of Ligilactobacillus agilis by Specific Amino Acid Substitution of Flagellin. Appl Environ Microbiol 2022; 88:e0127722. [PMID: 36173204 PMCID: PMC9599256 DOI: 10.1128/aem.01277-22] [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: 12/01/2022] Open
Abstract
Ligilactobacillus agilis is a flagellated motile commensal microbe that resides in the gastrointestinal tract of mammals and birds. Flagellin, the major subunit protein of flagellar filament, from pathogenic bacteria is generally a proinflammatory molecule that stimulates immune cells via Toll-like receptor 5 (TLR5). Interestingly, the flagellins of L. agilis are known to be immunologically attenuated despite the fact that the structure of the proteins, including the TLR5 recognition site, is highly conserved among bacteria. The results of our previous study suggested that this is attributed to the differences in three specific amino acids within the conserved TLR5 recognition site; however, this hypothesis remains to be confirmed. In this study, a series of recombinant L. agilis flagellins, with amino acid substitutions at the TLR5 recognition site, were constructed, and their immunogenic activity was evaluated in vitro. Then, an L. agilis strain with an active immunogenic TLR5 recognition site was generated. In vitro and in vivo immunological studies revealed that the mutant L. agilis strain with the modified flagellin was more immunogenic than the wild-type strain. In conclusion, the specific amino acid residues in L. agilis flagellins likely contribute to the discrimination between pathogens and commensals by the host defense system. Additionally, the immunogenically potent L. agilis mutants may serve as a useful platform for oral vaccine delivery. IMPORTANCE The interactions between gut microbes and immune cells play an important role in the health and disease of hosts. Ligilactobacillus agilis is a flagellated commensal bacterium found in the gut of mammals and birds. However, the flagellin proteins of L. agilis are immunologically attenuated and barely induce TLR5-dependent inflammation, unlike the flagellins of several pathogenic bacteria. This study demonstrated that three specific amino acids in the flagellin protein are responsible for this low immunogenicity in L. agilis. The results obtained herein improve our understanding of the symbiosis between gut microbes and their hosts.
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18
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Scheithauer TP, Herrema H, Yu H, Bakker GJ, Winkelmeijer M, Soukhatcheva G, Dai D, Ma C, Havik SR, Balvers M, Davids M, Meijnikman AS, Aydin Ö, van den Born BJH, Besselink MG, Busch OR, de Brauw M, van de Laar A, Belzer C, Stahl M, de Vos WM, Vallance BA, Nieuwdorp M, Verchere CB, van Raalte DH. Gut-derived bacterial flagellin induces beta-cell inflammation and dysfunction. Gut Microbes 2022; 14:2111951. [PMID: 35984746 PMCID: PMC9397137 DOI: 10.1080/19490976.2022.2111951] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Hyperglycemia and type 2 diabetes (T2D) are caused by failure of pancreatic beta cells. The role of the gut microbiota in T2D has been studied, but causal links remain enigmatic. Obese individuals with or without T2D were included from two independent Dutch cohorts. Human data were translated in vitro and in vivo by using pancreatic islets from C57BL6/J mice and by injecting flagellin into obese mice. Flagellin is part of the bacterial locomotor appendage flagellum, present in gut bacteria including Enterobacteriaceae, which we show to be more abundant in the gut of individuals with T2D. Subsequently, flagellin induces a pro-inflammatory response in pancreatic islets mediated by the Toll-like receptor (TLR)-5 expressed on resident islet macrophages. This inflammatory response is associated with beta-cell dysfunction, characterized by reduced insulin gene expression, impaired proinsulin processing and stress-induced insulin hypersecretion in vitro and in vivo in mice. We postulate that increased systemically disseminated flagellin in T2D is a contributing factor to beta-cell failure in time and represents a novel therapeutic target.
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Affiliation(s)
- Torsten P.M. Scheithauer
- Department of (Experimental) Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands,Diabetes Center, Department of Internal Medicine, Amsterdam, The Netherlands,CONTACT Torsten P.M. Scheithauer Department of (Experimental) Vascular Medicine, Amsterdam UMC, Amsterdam, AZ1105The Netherlands
| | - Hilde Herrema
- Department of (Experimental) Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Hongbing Yu
- Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition, and BC Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
| | - Guido J. Bakker
- Department of (Experimental) Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Maaike Winkelmeijer
- Department of (Experimental) Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Galina Soukhatcheva
- Departments of Surgery and Pathology and Laboratory Medicine Pathology and Laboratory Medicine, BC Children’s Hospital Research Institute, Centre for Molecular Medicine & Therapeutics, Vancouver, British Columbia, Canada
| | - Derek Dai
- Departments of Surgery and Pathology and Laboratory Medicine Pathology and Laboratory Medicine, BC Children’s Hospital Research Institute, Centre for Molecular Medicine & Therapeutics, Vancouver, British Columbia, Canada
| | - Caixia Ma
- Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition, and BC Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
| | - Stefan R. Havik
- Department of (Experimental) Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Manon Balvers
- Department of (Experimental) Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Mark Davids
- Department of (Experimental) Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Abraham S. Meijnikman
- Department of (Experimental) Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Ömrüm Aydin
- Department of (Experimental) Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Bert-Jan H. van den Born
- Department of (Experimental) Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands,Department of Public and Occupational Health, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Marc G. Besselink
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Cancer Center Amsterdam, the Netherlands
| | - Olivier R. Busch
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Cancer Center Amsterdam, the Netherlands
| | - Maurits de Brauw
- Department of Surgery, Spaarne Gasthuis, Hoofddorp, The Netherlands
| | | | - Clara Belzer
- Laboratory of Microbiology, Wageningen University and Research, Wageningen, The Netherlands
| | - Martin Stahl
- Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition, and BC Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
| | - Willem M. de Vos
- Laboratory of Microbiology, Wageningen University and Research, Wageningen, The Netherlands,Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Bruce A. Vallance
- Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition, and BC Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
| | - Max Nieuwdorp
- Department of (Experimental) Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands,Diabetes Center, Department of Internal Medicine, Amsterdam, The Netherlands
| | - C. Bruce Verchere
- Departments of Surgery and Pathology and Laboratory Medicine Pathology and Laboratory Medicine, BC Children’s Hospital Research Institute, Centre for Molecular Medicine & Therapeutics, Vancouver, British Columbia, Canada
| | - Daniël H. van Raalte
- Department of (Experimental) Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands,Diabetes Center, Department of Internal Medicine, Amsterdam, The Netherlands
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19
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van der Vossen EWJ, de Goffau MC, Levin E, Nieuwdorp M. Recent insights into the role of microbiome in the pathogenesis of obesity. Therap Adv Gastroenterol 2022; 15:17562848221115320. [PMID: 35967920 PMCID: PMC9373125 DOI: 10.1177/17562848221115320] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 07/06/2022] [Indexed: 02/04/2023] Open
Abstract
Obesity is a risk factor for many chronic diseases and its rising prevalence the last couple of decades is a healthcare concern in many countries. Obesity is a multifactorial problem that is not only limited in its causation by diet and lack of exercise. Genetics but also environmental factors such as the gut microbiome should similarly be taken into account. A plethora of articles have been published, that from various different angles, attempt to disentangle the complex interaction between gut microbiota and obesity. Examples range from the effect of the gut microbiota on the host immune system to the pathophysiological pathways in which microbial-derived metabolites affect obesity. Various discordant gut microbiota findings are a result of this complexity. In this review, in addition to summarizing the classical role of the gut microbiome in the pathogenesis of obesity, we attempt to view both the healthy and obesogenic effects of the gut microbiota as a consequence of the presence or absence of collective guilds/trophic networks. Lastly, we propose avenues and strategies for the future of gut microbiome research concerning obesity.
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Affiliation(s)
- Eduard W. J. van der Vossen
- Department of Experimental Vascular Medicine,
Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The
Netherlands
| | - Marcus C. de Goffau
- Department of Experimental Vascular Medicine,
Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The
Netherlands
| | - Evgeni Levin
- Department of Experimental Vascular Medicine,
Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The
Netherlands,Horaizon BV, Delft, The Netherlands
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20
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Duggan BM, Singh AM, Chan DY, Schertzer JD. Postbiotics engage IRF4 in adipocytes to promote sex-dependent changes in blood glucose during obesity. Physiol Rep 2022; 10:e15439. [PMID: 35993451 PMCID: PMC9393906 DOI: 10.14814/phy2.15439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/27/2022] [Accepted: 08/09/2022] [Indexed: 11/24/2022] Open
Abstract
Postbiotics are microbial-derived components or metabolites that can influence host immunity and metabolism. Some postbiotics can improve blood glucose control and lower inflammation during bacterial or nutritional stress. Bacterial cell wall-derived muramyl dipeptide (MDP) is a potent insulin-sensitizing postbiotic that engages NOD2, RIPK2, and requires interferon regulatory factor 4 (IRF4) to lower inflammation and improve blood glucose. However, the sex-dependent effects of this postbiotic and the cell type required for IRF4 to cause inflammatory versus glycemic responses to MDP were unknown. Here, we measured how MDP injection altered glucose tolerance and adipose tissue inflammation during low-level endotoxemia and high fat diet (HFD)-induced obesity in male and female adipocyte-specific IRF4 knockout mice (AdipoIRF4fl/fl ) compared to WTfl/fl mice. Adipocyte IRF4 was required for the blood glucose-lowering effects of MDP during endotoxemia and HFD-induced obesity in male mice. However, MDP did not alter blood glucose in female WTfl/fl and AdipoIRF4fl/f mice during endotoxemia. Unexpectedly, female HFD-fed AdipoIRF4fl/f mice had lower blood glucose after MDP treatment compared to WTfl/fl mice. MDP lowered inflammatory gene expression in adipose tissue of HFD-fed WTfl/fl and AdipoIRF4fl/fl mice of both sexes. Therefore, MDP-mediated lowering of adipose inflammation does not require adipocyte IRF4 and was independent of sex. Together, these data show that injection of MDP, an insulin-sensitizing postbiotic, lowers adipose tissue inflammation in male and female mice, but lower adipose inflammation is not always associated with improved blood glucose. The blood glucose-lowering effect of the postbiotic MDP and dependence on adipocyte IRF4 is sex-dependent.
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Affiliation(s)
- Brittany M. Duggan
- Department of Biochemistry and Biomedical SciencesMcMaster UniversityHamiltonCanada
- Farncombe Family Digestive Health Research InstituteMcMaster UniversityHamiltonCanada
- Centre for Metabolism, Obesity and Diabetes ResearchMcMaster UniversityHamiltonCanada
| | - Anita M. Singh
- Department of Biochemistry and Biomedical SciencesMcMaster UniversityHamiltonCanada
- Farncombe Family Digestive Health Research InstituteMcMaster UniversityHamiltonCanada
- Centre for Metabolism, Obesity and Diabetes ResearchMcMaster UniversityHamiltonCanada
| | - Darryl Y. Chan
- Department of Biochemistry and Biomedical SciencesMcMaster UniversityHamiltonCanada
- Farncombe Family Digestive Health Research InstituteMcMaster UniversityHamiltonCanada
- Centre for Metabolism, Obesity and Diabetes ResearchMcMaster UniversityHamiltonCanada
| | - Jonathan D. Schertzer
- Department of Biochemistry and Biomedical SciencesMcMaster UniversityHamiltonCanada
- Farncombe Family Digestive Health Research InstituteMcMaster UniversityHamiltonCanada
- Centre for Metabolism, Obesity and Diabetes ResearchMcMaster UniversityHamiltonCanada
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21
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Sharp C, Foster KR. Host control and the evolution of cooperation in host microbiomes. Nat Commun 2022; 13:3567. [PMID: 35732630 PMCID: PMC9218092 DOI: 10.1038/s41467-022-30971-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 05/27/2022] [Indexed: 12/14/2022] Open
Abstract
Humans, and many other species, are host to diverse symbionts. It is often suggested that the mutual benefits of host-microbe relationships can alone explain cooperative evolution. Here, we evaluate this hypothesis with evolutionary modelling. Our model predicts that mutual benefits are insufficient to drive cooperation in systems like the human microbiome, because of competition between symbionts. However, cooperation can emerge if hosts can exert control over symbionts, so long as there are constraints that limit symbiont counter evolution. We test our model with genomic data of two bacterial traits monitored by animal immune systems. In both cases, bacteria have evolved as predicted under host control, tending to lose flagella and maintain butyrate production when host-associated. Moreover, an analysis of bacteria that retain flagella supports the evolution of host control, via toll-like receptor 5, which limits symbiont counter evolution. Our work puts host control mechanisms, including the immune system, at the centre of microbiome evolution.
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Affiliation(s)
- Connor Sharp
- Department of Zoology, University of Oxford, Oxford, UK.
- Department of Biochemistry, University of Oxford, Oxford, UK.
| | - Kevin R Foster
- Department of Zoology, University of Oxford, Oxford, UK.
- Department of Biochemistry, University of Oxford, Oxford, UK.
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22
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Abstract
Secretory immunoglobulin A (SIgA) in human milk plays a central role in complex maternal-infant interactions that influence long-term health outcomes. Governed by genetics and maternal microbial exposure, human milk SIgA shapes both the microbiota and immune system of infants. Historically, SIgA-microbe interactions have been challenging to unravel due to their dynamic and personalized nature, particularly during early life. Recent advances have helped to clarify how SIgA acts beyond simple pathogen clearance to help guide and constrain a healthy microbiota, promote tolerance, and influence immune system development. In this review, we highlight these new findings in the context of the critical early-life window and propose outstanding areas of study that will be key to harnessing the benefits of SIgA to support healthy immune development during infancy.
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23
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Allen JM, Mackos AR, Jaggers RM, Brewster PC, Webb M, Lin CH, Ladaika C, Davies R, White P, Loman BR, Bailey MT. Psychological stress disrupts intestinal epithelial cell function and mucosal integrity through microbe and host-directed processes. Gut Microbes 2022; 14:2035661. [PMID: 35184677 PMCID: PMC8865257 DOI: 10.1080/19490976.2022.2035661] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Psychological stress alters the gut microbiota and predisposes individuals to increased risk for enteric infections and chronic bowel conditions. Intestinal epithelial cells (IECs) are responsible for maintaining homeostatic interactions between the gut microbiota and its host. In this study, we hypothesized that disruption to colonic IECs is a key factor underlying stress-induced disturbances to intestinal homeostasis. Conventionally raised (CONV-R) and germ-free (GF) mice were exposed to a social disruption stressor (Str) to ascertain how stress modifies colonic IECs, the mucosal layer, and the gut microbiota. RNA sequencing of IECs isolated from CONV-R mice revealed a robust pro-inflammatory (Saa1, Il18), pro-oxidative (Duox2, Nos2), and antimicrobial (Reg3b/g) transcriptional profile as a result of Str. This response occurred concomitant to mucus layer thinning and signs of microbial translocation. In contrast to their CONV-R counterparts, IECs from GF mice or mice treated with broad spectrum antibiotics exhibited no detectable transcriptional changes in response to Str. Nevertheless, IECs from Str-exposed GF mice exhibited an altered response to ex vivo bacterial challenge (increased dual Oxidase-2 [Duox2] and nitric oxide synthase-2 (Nos2)), indicating that STR primes host IEC pro-oxidative responses. In CONV-R mice stress-induced increases in colonic Duox2 and Nos2 (ROS generating enzymes) strongly paralleled changes to microbiome composition and function, evidencing Str-mediated ROS production as a primary factor mediating gut-microbiota dysbiosis. In conclusion, a mouse model of social stress disrupts colonic epithelial and mucosal integrity, a response dependent on an intact microbiota and host stress signals. Together these preclinical findings may provide new insight into mechanisms of stress-associated bowel pathologies in humans.
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Affiliation(s)
- Jacob M. Allen
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois,Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio,CONTACT Jacob M. Allen Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, 906 S. Goodwin Ave, Urbana61820, Illinois
| | - Amy R. Mackos
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio,College of Nursing, The Ohio State University, Columbus, Ohio
| | - Robert M. Jaggers
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio
| | - Patricia C. Brewster
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Mikaela Webb
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Chia-Hao Lin
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Chris Ladaika
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio
| | - Ronald Davies
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio
| | - Peter White
- Steve and Cindy Rasmussen Institute for Genomic Medicine, Nationwide Children’s Hospital, Columbus, Ohio
| | - Brett R. Loman
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio,Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Michael T. Bailey
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio,Department of Pediatrics, The Ohio State University College of Medicine, Columbus, Ohio,Oral and Gi Microbiology Research Affinity Group, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio,Michael T. Bailey Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio
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24
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Akahoshi DT, Bevins CL. Flagella at the Host-Microbe Interface: Key Functions Intersect With Redundant Responses. Front Immunol 2022; 13:828758. [PMID: 35401545 PMCID: PMC8987104 DOI: 10.3389/fimmu.2022.828758] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 02/21/2022] [Indexed: 12/15/2022] Open
Abstract
Many bacteria and other microbes achieve locomotion via flagella, which are organelles that function as a swimming motor. Depending on the environment, flagellar motility can serve a variety of beneficial functions and confer a fitness advantage. For example, within a mammalian host, flagellar motility can provide bacteria the ability to resist clearance by flow, facilitate access to host epithelial cells, and enable travel to nutrient niches. From the host’s perspective, the mobility that flagella impart to bacteria can be associated with harmful activities that can disrupt homeostasis, such as invasion of epithelial cells, translocation across epithelial barriers, and biofilm formation, which ultimately can decrease a host’s reproductive fitness from a perspective of natural selection. Thus, over an evolutionary timescale, the host developed a repertoire of innate and adaptive immune countermeasures that target and mitigate this microbial threat. These countermeasures are wide-ranging and include structural components of the mucosa that maintain spatial segregation of bacteria from the epithelium, mechanisms of molecular recognition and inducible responses to flagellin, and secreted effector molecules of the innate and adaptive immune systems that directly inhibit flagellar motility. While much of our understanding of the dynamics of host-microbe interaction regarding flagella is derived from studies of enteric bacterial pathogens where flagella are a recognized virulence factor, newer studies have delved into host interaction with flagellated members of the commensal microbiota during homeostasis. Even though many aspects of flagellar motility may seem innocuous, the host’s redundant efforts to stop bacteria in their tracks highlights the importance of this host-microbe interaction.
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25
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Scheithauer TP, Davids M, Winkelmeijer M, Verdoes X, Aydin Ö, de Brauw M, van de Laar A, Meijnikman AS, Gerdes VE, van Raalte D, Herrema H, Nieuwdorp M. Compensatory intestinal antibody response against pro-inflammatory microbiota after bariatric surgery. Gut Microbes 2022; 14:2031696. [PMID: 35130127 PMCID: PMC8824225 DOI: 10.1080/19490976.2022.2031696] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Obesity and type 2 diabetes (T2D) are growing burdens for individuals and the health-care system. Bariatric surgery is an efficient, but drastic treatment to reduce body weight, normalize glucose values, and reduce low-grade inflammation. The gut microbiome, which is in part controlled by intestinal antibodies, such as IgA, is involved in the development of both conditions. Knowledge of the effect of bariatric surgery on systemic and intestinal antibody response is limited. Here, we determined the fecal antibody and gut microbiome response in 40 T2D and non-diabetic (ND) obese individuals that underwent bariatric surgery (N = 40). Body weight, fasting glucose concentrations and inflammatory parameters decreased after bariatric surgery, whereas pro-inflammatory bacterial species such as lipopolysaccharide (LPS), and flagellin increased in the feces. Simultaneously, concentrations of LPS- and flagellin-specific intestinal IgA levels increased with the majority of pro-inflammatory bacteria coated with IgA after surgery. Finally, serum antibodies decreased in both groups, along with a lower inflammatory tone. We conclude that intestinal rearrangement by bariatric surgery leads to expansion of typical pro-inflammatory bacteria, which may be compensated by an improved antibody response. Although further evidence and mechanistic insights are needed, we postulate that this apparent compensatory antibody response might help to reduce systemic inflammation by neutralizing intestinal immunogenic components and thereby enhance intestinal barrier function after bariatric surgery.
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Affiliation(s)
- Torsten P.M. Scheithauer
- Department of (Experimental) Vascular Medicine, Amsterdam University Medical Center (UMC), Amsterdam, The Netherlands,CONTACT Torsten P.M. Scheithauer Department of (Experimental) Vascular Medicine, Amsterdam University Medical Center (UMC), Location AMC, Amsterdam, AZ1105, The Netherlands
| | - Mark Davids
- Department of (Experimental) Vascular Medicine, Amsterdam University Medical Center (UMC), Amsterdam, The Netherlands
| | - Maaike Winkelmeijer
- Department of (Experimental) Vascular Medicine, Amsterdam University Medical Center (UMC), Amsterdam, The Netherlands
| | - Xanthe Verdoes
- Department of (Experimental) Vascular Medicine, Amsterdam University Medical Center (UMC), Amsterdam, The Netherlands
| | - Ömrüm Aydin
- Department of (Experimental) Vascular Medicine, Amsterdam University Medical Center (UMC), Amsterdam, The Netherlands,Department of Surgery, Spaarne Gasthuis, Hoofddorp, The Netherlands
| | - Maurits de Brauw
- Department of Surgery, Spaarne Gasthuis, Hoofddorp, The Netherlands
| | | | - Abraham S. Meijnikman
- Department of (Experimental) Vascular Medicine, Amsterdam University Medical Center (UMC), Amsterdam, The Netherlands,Department of Surgery, Spaarne Gasthuis, Hoofddorp, The Netherlands
| | - Victor E.A. Gerdes
- Department of (Experimental) Vascular Medicine, Amsterdam University Medical Center (UMC), Amsterdam, The Netherlands
| | - Daniël van Raalte
- Department of (Experimental) Vascular Medicine, Amsterdam University Medical Center (UMC), Amsterdam, The Netherlands,Diabetes Center; Department of Internal Medicine, Amsterdam University Medical Center (UMC), Amsterdam, The Netherlands
| | - Hilde Herrema
- Department of (Experimental) Vascular Medicine, Amsterdam University Medical Center (UMC), Amsterdam, The Netherlands
| | - Max Nieuwdorp
- Department of (Experimental) Vascular Medicine, Amsterdam University Medical Center (UMC), Amsterdam, The Netherlands,Department of Surgery, Spaarne Gasthuis, Hoofddorp, The Netherlands,Diabetes Center; Department of Internal Medicine, Amsterdam University Medical Center (UMC), Amsterdam, The Netherlands
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26
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Han X, Guo J, Qin Y, Huang W, You Y, Zhan J. Dietary regulation of the SIgA-gut microbiota interaction. Crit Rev Food Sci Nutr 2022; 63:6379-6392. [PMID: 35125055 DOI: 10.1080/10408398.2022.2031097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Gut microbiota (GM) is essential for host health, and changes in the GM are related to the development of various diseases. Recently, secretory immunoglobulin A (SIgA), the most abundant immunoglobulin isotype in the intestinal mucosa, has been found to play an essential role in controlling GM. SIgA dysfunction can lead to changes in the GM and is associated with the development of various GM-related diseases. Although in early stage, recent studies have shown that assorted dietary interventions, including vitamins, amino acids, fatty acids, polyphenols, oligo/polysaccharides, and probiotics, can influence the intestinal SIgA response and SIgA-GM interaction. Dietary intervention can enhance the SIgA response by directly regulating it (from top to bottom) or by regulating the GM structure or gene expression (from bottom to top). Furthermore, intensive studies involving the particular influence of dietary intervention on SIgA-binding to the GM and SIgA repertoire and the precise regulation of the SIgA response via dietary intervention are still exceedingly scarce and merit further consideration. This review summarizes the existing knowledge and (possible) mechanisms of the influence of dietary intervention on the SIgA-GM interaction. Key issues are considered, and the approaches in addressing these issues in future studies are also discussed.
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Affiliation(s)
- Xue Han
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Department of Physiology and Pathophysiology, Peking University Health Science Center, Beijing
| | - Jielong Guo
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yue Qin
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Weidong Huang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yilin You
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Jicheng Zhan
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
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27
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Modulating Oxidative Stress in B Cells Promotes Immunotherapy in Food Allergy. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:3605977. [PMID: 35096267 PMCID: PMC8799367 DOI: 10.1155/2022/3605977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 12/23/2021] [Accepted: 12/29/2021] [Indexed: 11/18/2022]
Abstract
Allergen-specific immunotherapy (SIT) is the mainstay in the treatment of allergic diseases; its therapeutic efficacy is to be improved. Bacterial flagellin (FGN) has immune regulatory functions. This study investigates the role of FGN in promoting immunotherapy efficacy through modulating oxidative stress in regulatory B cells (Bregs). Blood samples were collected from patients with food allergy (FA) and healthy control (HC) subjects. CD19+ CD5+ Bregs were purified from blood samples by flow cytometry cell sorting. A murine FA model was developed with ovalbumin as the specific antigen. The results showed that peripheral Bregs from FA patients showed lower TLR5-related signals and higher apoptotic activities. The peripheral Breg frequency was negatively correlated with serum FGN levels in FA patients. Exposure to a specific antigen in culture induced antigen-specific Breg apoptosis that was counteracted by the presence of FGN. FGN diminished specific antigen-induced oxidative stress in Bregs. The STAT3/MAPKp38/NF-κB signal pathway was involved in the FGN/TLR5 signal-promoted superoxide dismutase expression in Bregs. Administration of FGN promotes the SIT efficacy in suppressing experimental FA. In summary, administration of FGN promotes SIT efficacy on FA, suggesting that the combination of FGN and SIT can be a novel therapy that has the translational potential to be employed in the treatment of allergic diseases.
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Scheithauer TPM, Bakker GJ, Winkelmeijer M, Davids M, Nieuwdorp M, van Raalte DH, Herrema H. Compensatory intestinal immunoglobulin response after vancomycin treatment in humans. Gut Microbes 2022; 13:1-14. [PMID: 33475461 PMCID: PMC7833805 DOI: 10.1080/19490976.2021.1875109] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Intestinal immunoglobulins (Ig) are abundantly secreted antibodies that bind bacteria and bacterial components in the gut. This binding is considered to accelerate bacterial transit time and prevent the interaction of potentially immunogenic compounds with intestinal immune cells. Ig secretion is regulated by alterations in gut microbiome composition, an event rarely mapped in an intervention setting in humans. Here, we determined the intestinal and systemic Ig response to a major intervention in gut microbiome composition. Healthy humans and humans with metabolic syndrome received oral vancomycin 500 mg four times per day for 7 days. Coinciding with a vancomycin-induced increase in Gram-negative bacteria, fecal levels of the immunogenic bacterial components lipopolysaccharide (LPS) and flagellin drastically increased. Intestinal antibodies (IgA and IgM) significantly increased, whereas peripheral antibodies (IgG, IgA, and IgM) were mostly unaffected by vancomycin treatment. Bacterial cell sorting followed by 16S rRNA sequencing revealed that the majority of Gram-negative bacteria, including opportunistic pathogens, were IgA-coated after the intervention. We suggest that the intestinal Ig response after vancomycin treatment prevents the intrusion of pathogens and bacterial components into systemic sites.
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Affiliation(s)
- Torsten P. M. Scheithauer
- Department of Experimental Vascular Medicine, Amsterdam UMC, Location AMC at University of Amsterdam, Amsterdam, The Netherlands,Department of Internal Medicine, Diabetes Center, Amsterdam UMC, Location VUmc at Vrije Universiteit Amsterdam, Amsterdam, The Netherlands,CONTACT Torsten P. M. Scheithauer Department of Experimental Vascular Medicine, Amsterdam UMC, Location AMC, Meibergdreef 9, Room G1-115, Amsterdam1105 AZ, The Netherlands
| | - Guido J. Bakker
- Department of Experimental Vascular Medicine, Amsterdam UMC, Location AMC at University of Amsterdam, Amsterdam, The Netherlands
| | - Maaike Winkelmeijer
- Department of Experimental Vascular Medicine, Amsterdam UMC, Location AMC at University of Amsterdam, Amsterdam, The Netherlands
| | - Mark Davids
- Department of Experimental Vascular Medicine, Amsterdam UMC, Location AMC at University of Amsterdam, Amsterdam, The Netherlands
| | - Max Nieuwdorp
- Department of Experimental Vascular Medicine, Amsterdam UMC, Location AMC at University of Amsterdam, Amsterdam, The Netherlands,Department of Internal Medicine, Diabetes Center, Amsterdam UMC, Location VUmc at Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Daniël H. van Raalte
- Department of Experimental Vascular Medicine, Amsterdam UMC, Location AMC at University of Amsterdam, Amsterdam, The Netherlands,Department of Internal Medicine, Diabetes Center, Amsterdam UMC, Location VUmc at Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Hilde Herrema
- Department of Experimental Vascular Medicine, Amsterdam UMC, Location AMC at University of Amsterdam, Amsterdam, The Netherlands
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29
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Lin H, Guo Q, Wen Z, Tan S, Chen J, Lin L, Chen P, He J, Wen J, Chen Y. The multiple effects of fecal microbiota transplantation on diarrhea-predominant irritable bowel syndrome (IBS-D) patients with anxiety and depression behaviors. Microb Cell Fact 2021; 20:233. [PMID: 34963452 PMCID: PMC8715582 DOI: 10.1186/s12934-021-01720-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/11/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Anxiety and depression are complications in Irritable bowel syndrome (IBS) patients. In this study, we recruited 18 IBS patients with mild-modest anxiety and depression behaviors, and after the screening, we defined the FMT treatment group (n = 9) and the control group (n = 9). The IBS symptom severity scale (IBS-SSS), Hamilton Anxiety Rating Scale (HAM-A), Hamilton Depression Rating Scale (HAM-D), Irritable Bowel Syndrome Quality of Life (IBS-QOL) and Bristol stool scale (BSS) were evaluated one week before FMT (baseline), one-week-, one-month-, two-month-, and three-month-following FMT. Meanwhile, we determined the SCFAs in the patient's feces and serum and continued the metagenomic analysis of the microorganisms in the patient's feces. RESULTS The results showed that the patient's anxiety and depression behavior gradually improved with FMT treatment. Moreover, the illness and quality of life had also been relieved significantly. The content of isovaleric acid and valeric acid was significantly reduced in the FMT group compared to the Col group. Metagenomic analysis showed that FMT treatment decreased the abundance of Faecalibacterium, Eubacterium and Escherichia. From KEGG functional analysis, we confirmed that the top five abundant pathways were "bacterial chemotaxis, "flagellar assembly", "glycine, serine and threonine metabolism", "apoptosis", and "bacterial invasion of epithelial cells". CONCLUSIONS FMT treatment can effectively alleviate the anxiety and depression behaviors of IBS-D patients and reduce the IBS-SSS score, indicating that FMT can improve patients' symptoms. The high throughput sequencing results show that Bifidobacterium and Escherichia play the most critical role in the formation and recovery of IBS-D patients. The GC/MS data indicated that faeces isovaleric acid and valeric acid might be more suitable as a metabolic indicator of IBS-D remission. Trial registration ChiCTR, ChiCTR1900024924, Registered 3 August 2019, https://www.chictr.org.cn/showproj.aspx?proj=41676 .
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Affiliation(s)
- Hao Lin
- Department of Gastroenterology, Fujian Provincial Hospital South Branch, No. 516, South, Jinrong Road, Cangshan District, Fuzhou, 350000, Fujian, China.,Shengli Clinical Medical College, Fujian Medical University, No.134, East Street, Gulou District, Fuzhou, 350000, Fujian, China.,State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Qingqing Guo
- Department of Intensive Medicine, The First Affiliated Hospital of Fujian Medical University, No.20, Chazhong Road, Taijiang District, Fuzhou, 350005, Fujian, China
| | - Zhiyong Wen
- Department of Gastroenterology, Affiliated Pingxiang Hospital, Southern Medical University, No. 8, Wugong Mountain Avenue, Development Zone, Pingxiang, 337055, Jiangxi, China
| | - Songlin Tan
- Department of Gastroenterology, Affiliated Pingxiang Hospital, Southern Medical University, No. 8, Wugong Mountain Avenue, Development Zone, Pingxiang, 337055, Jiangxi, China
| | - Jie Chen
- Department of Gastroenterology, Affiliated Pingxiang Hospital, Southern Medical University, No. 8, Wugong Mountain Avenue, Development Zone, Pingxiang, 337055, Jiangxi, China
| | - Lijian Lin
- Department of Emergency, Fujian Provincial Hospital, Fujian Medical University, No.134, East Street,Gulou District, Fuzhou, 350000, Fujian, China
| | - Pengcheng Chen
- Department of Health Management, Fujian Provincial Hospital South Branch, No. 516, South Jinrong Road, Cangshan District, Fuzhou, 350000, Fujian, China
| | - Jianquan He
- School of medicine, Xiamen University, Xiamen, China
| | - Jianbo Wen
- Department of Gastroenterology, Affiliated Pingxiang Hospital, Southern Medical University, No. 8, Wugong Mountain Avenue, Development Zone, Pingxiang, 337055, Jiangxi, China. .,State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| | - Ye Chen
- Department of Gastroenterology, Integrative Microecology Center, Shenzhen Hospital, Southern Medical University, 1333 New Lake Road, Shenzhen, 518100, China. .,State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
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30
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Duggan BM, Tamrakar AK, Barra NG, Anhê FF, Paniccia G, Wallace JG, Stacey HD, Surette MG, Miller MS, Sloboda DM, Schertzer JD. Gut microbiota-based vaccination engages innate immunity to improve blood glucose control in obese mice. Mol Metab 2021; 55:101404. [PMID: 34839023 PMCID: PMC8693341 DOI: 10.1016/j.molmet.2021.101404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 12/20/2022] Open
Abstract
Objective Obesity and diabetes increase circulating levels of microbial components derived from the gut microbiota. Individual bacterial factors (i.e., postbiotics) can have opposing effects on blood glucose. Methods We tested the net effect of gut bacterial extracts on blood glucose in mice using a microbiota-based vaccination strategy. Results Male and female mice had improved glucose and insulin tolerance five weeks after a single subcutaneous injection of a specific dose of a bacterial extract obtained from the luminal contents of the upper small intestine (SI), lower SI, or cecum. Injection of mice with intestinal extracts from germ-free mice revealed that bacteria were required for a microbiota-based vaccination to improve blood glucose control. Vaccination of Nod1−/−, Nod2−/−, and Ripk2−/− mice showed that each of these innate immune proteins was required for bacterial extract injection to improve blood glucose control. A microbiota-based vaccination promoted an immunoglobulin-G (IgG) response directed against bacterial extract antigens, where subcutaneous injection of mice with the luminal contents of the lower SI elicited a bacterial extract-specific IgG response that is compartmentalized to the lower SI of vaccinated mice. A microbiota-based vaccination was associated with an altered microbiota composition in the lower SI and colon of mice. Lean mice only required a single injection of small intestinal-derived bacterial extract, but high fat diet (HFD)-fed, obese mice required prime-boost bacterial extract injections for improvements in blood glucose control. Conclusions Subversion of the gut barrier by vaccination with a microbiota-based extract engages innate immunity to promote long-lasting improvements in blood glucose control in a dose-dependent manner. Subcutaneous injection of gut bacterial extracts improved blood glucose control in mice. Microbiota-based vaccination engaged NOD1-NOD2-RIPK2 to alter blood glucose. Microbiota-based vaccination promoted a proximal gut IgG response. Microbiota-based vaccination altered the composition of the gut microbiome. Obese mice required prime-boost injections to improve blood glucose control.
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Affiliation(s)
- Brittany M Duggan
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada; Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Canada; Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, Canada
| | - Akhilesh K Tamrakar
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Nicole G Barra
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada; Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Canada; Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, Canada
| | - Fernando F Anhê
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada; Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Canada; Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, Canada
| | - Gabriella Paniccia
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada
| | - Jessica G Wallace
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada; Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Canada
| | - Hannah D Stacey
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada; Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Canada; McMaster Immunology Research Centre, McMaster University, Hamilton, Canada
| | - Michael G Surette
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada; Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Canada; Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, Canada; Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Canada; Department of Medicine, McMaster University, Hamilton, Canada
| | - Matthew S Miller
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada; Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Canada; McMaster Immunology Research Centre, McMaster University, Hamilton, Canada
| | - Deborah M Sloboda
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada; Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Canada; Department of Obstetrics and Gynecology, McMaster University, Hamilton, Canada; Department of Pediatrics, McMaster University, Hamilton, Canada
| | - Jonathan D Schertzer
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada; Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Canada; Centre for Metabolism, Obesity and Diabetes Research, McMaster University, Hamilton, Canada.
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31
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Neag MA, Mitre AO, Catinean A, Buzoianu AD. Overview of the microbiota in the gut-liver axis in viral B and C hepatitis. World J Gastroenterol 2021; 27:7446-7461. [PMID: 34887642 PMCID: PMC8613744 DOI: 10.3748/wjg.v27.i43.7446] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 08/13/2021] [Accepted: 11/03/2021] [Indexed: 02/06/2023] Open
Abstract
Viral B and C hepatitis are a major current health issue, both diseases having a chronic damaging effect on the liver and its functions. Chronic liver disease can lead to even more severe and life-threatening conditions, such as liver cirrhosis and hepatocellular carcinoma. Recent years have uncovered an important interplay between the liver and the gut microbiome: the gut-liver axis. Hepatitis B and C infections often cause alterations in the gut microbiota by lowering the levels of ‘protective’ gut microorganisms and, by doing so, hinder the microbiota ability to boost the immune response. Treatments aimed at restoring the gut microbiota balance may provide a valuable addition to current practice therapies and may help limit the chronic changes observed in the liver of hepatitis B and C patients. This review aims to summarize the current knowledge on the anato-functional axis between the gut and liver and to highlight the influence that hepatitis B and C viruses have on the microbiota balance, as well as the influence of treatments aimed at restoring the gut microbiota on infected livers and disease progression.
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Affiliation(s)
- Maria Adriana Neag
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Iuliu Hatieganu University of Medicine and Pharmacy of Cluj-Napoca, Cluj-Napoca 400337, Romania
| | - Andrei Otto Mitre
- Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy of Cluj-Napoca, Cluj-Napoca 400012, Romania
| | - Adrian Catinean
- Department of Internal Medicine, Iuliu Hatieganu University of Medicine and Pharmacy of Cluj-Napoca, Cluj-Napoca 400006, Romania
| | - Anca Dana Buzoianu
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Iuliu Hatieganu University of Medicine and Pharmacy of Cluj-Napoca, Cluj-Napoca 400337, Romania
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32
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Heilbronner S, Krismer B, Brötz-Oesterhelt H, Peschel A. The microbiome-shaping roles of bacteriocins. Nat Rev Microbiol 2021; 19:726-739. [PMID: 34075213 DOI: 10.1038/s41579-021-00569-w] [Citation(s) in RCA: 106] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2021] [Indexed: 02/05/2023]
Abstract
The microbiomes on human body surfaces affect health in multiple ways. They include not only commensal or mutualistic bacteria but also potentially pathogenic bacteria, which can enter sterile tissues to cause invasive infection. Many commensal bacteria produce small antibacterial molecules termed bacteriocins that have the capacity to eliminate specific colonizing pathogens; as such, bacteriocins have attracted increased attention as potential microbiome-editing tools. Metagenome-based and activity-based screening approaches have strongly expanded our knowledge of the abundance and diversity of bacteriocin biosynthetic gene clusters and the properties of a continuously growing list of bacteriocin classes. The dynamic acquisition, diversification or loss of bacteriocin genes can shape the fitness of a bacterial strain that is in competition with bacteriocin-susceptible bacteria. However, a bacteriocin can only provide a competitive advantage if its fitness benefit exceeds the metabolic cost of production, if it spares crucial mutualistic partner strains and if major competitors cannot develop resistance. In contrast to most currently available antibiotics, many bacteriocins have only narrow activity ranges and could be attractive agents for precision therapy and prevention of infections. A common scientific strategy involving multiple disciplines is needed to uncover the immense potential of microbiome-shaping bacteriocins.
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Affiliation(s)
- Simon Heilbronner
- Interfaculty Institute of Microbiology and Infection Medicine, Department of Infection Biology, University of Tübingen, Tübingen, Germany. .,Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany.
| | - Bernhard Krismer
- Interfaculty Institute of Microbiology and Infection Medicine, Department of Infection Biology, University of Tübingen, Tübingen, Germany.,Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany
| | - Heike Brötz-Oesterhelt
- Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany.,Interfaculty Institute of Microbiology and Infection Medicine, Department of Microbial Bioactive Compounds, University of Tübingen, Tübingen, Germany
| | - Andreas Peschel
- Interfaculty Institute of Microbiology and Infection Medicine, Department of Infection Biology, University of Tübingen, Tübingen, Germany. .,Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany.
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Intestinal Microbiota as a Contributor to Chronic Inflammation and Its Potential Modifications. Nutrients 2021; 13:nu13113839. [PMID: 34836095 PMCID: PMC8618457 DOI: 10.3390/nu13113839] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 10/22/2021] [Accepted: 10/25/2021] [Indexed: 12/12/2022] Open
Abstract
The gut microbiota is a crucial factor in maintaining homeostasis. The presence of commensal microorganisms leads to the stimulation of the immune system and its maturation. In turn, dysbiosis with an impaired intestinal barrier leads to accelerated contact of microbiota with the host’s immune cells. Microbial structural parts, i.e., pathogen-associated molecular patterns (PAMPs), such as flagellin (FLG), peptidoglycan (PGN), lipoteichoic acid (LTA), and lipopolysaccharide (LPS), induce inflammation via activation of pattern recognition receptors. Microbial metabolites can also develop chronic low-grade inflammation, which is the cause of many metabolic diseases. This article aims to systematize information on the influence of microbiota on chronic inflammation and the benefits of microbiota modification through dietary changes, prebiotics, and probiotic intake. Scientific research indicates that the modification of the microbiota in various disease states can reduce inflammation and improve the metabolic profile. However, since there is no pattern for a healthy microbiota, there is no optimal way to modify it. The methods of influencing microbiota should be adapted to the type of dysbiosis. Although there are studies on the microbiota and its effects on inflammation, this subject is still relatively unknown, and more research is needed in this area.
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de Maria YNLF, Aciole Barbosa D, Menegidio FB, Santos KBNH, Humberto AC, Alencar VC, Silva JFS, Costa de Oliveira R, Batista ML, Nunes LR, Jabes DL. Analysis of mouse faecal dysbiosis, during the development of cachexia, induced by transplantation with Lewis lung carcinoma cells. MICROBIOLOGY (READING, ENGLAND) 2021; 167. [PMID: 34596506 DOI: 10.1099/mic.0.001088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Cachexia (CC) is a complex wasting syndrome that significantly affects life quality and life expectancy among cancer patients. Original studies, in which CC was induced in mouse models through inoculation with BaF and C26 tumour cells, demonstrated that CC development correlates with bacterial gut dysbiosis in these animals. In both cases, a common microbial signature was observed, based on the expansion of Enterobacteriaceae in the gut of CC animals. However, these two types of tumours induce unique microbial profiles, suggesting that different CC induction mechanisms significantly impact the outcome of gut dysbiosis. The present study sought to expand the scope of such analyses by characterizing the CC-associated dysbiosis that develops when mice are inoculated with Lewis lung carcinoma (LLC) cells, which constitutes one of the most widely employed mechanisms for CC induction. Interestingly, Enterobacteriaceae expansion is also observed in LLC-induced CC. However, the dysbiosis identified herein displays a more complex pattern, involving representatives from seven different bacterial phyla, which were consistently identified across successive levels of taxonomic hierarchy. These results are supported by a predictive analysis of gene content, which identified a series of functional/structural changes that potentially occur in the gut bacterial population of these animals, providing a complementary and alternative approach to microbiome analyses based solely on taxonomic classification.
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Affiliation(s)
- Yara N L F de Maria
- Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes (UMC), Brazil
| | - David Aciole Barbosa
- Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes (UMC), Brazil
| | - Fabiano B Menegidio
- Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes (UMC), Brazil
| | | | | | - Valquíria C Alencar
- Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes (UMC), Brazil
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Brazil
| | - Juliana F S Silva
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Brazil
| | | | - Miguel L Batista
- Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes (UMC), Brazil
- Department of Biochemistry, Boston University School of Medicine, USA
| | - Luiz R Nunes
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Brazil
| | - Daniela L Jabes
- Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes (UMC), Brazil
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35
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Klag KA, Round JL. Microbiota-Immune Interactions Regulate Metabolic Disease. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2021; 207:1719-1724. [PMID: 34544814 PMCID: PMC9105212 DOI: 10.4049/jimmunol.2100419] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 06/18/2021] [Indexed: 12/13/2022]
Abstract
Metabolic diseases are common worldwide and include diseases of overnutrition, such as obesity, or undernutrition, such as kwashiorkor. Both the immune system and the microbiota contribute to a variety of metabolic diseases; however, these two processes have largely been studied independently of one another in this context. The gastrointestinal system houses the greatest density of microbes but also houses one of the largest collections of immune molecules, especially Abs. The IgA isotype dominates the Ab landscape at mucosal sites, and a number of studies have demonstrated the importance of this Ab to the stability of the microbiota. In this article, we review the literature that demonstrates how homeostatic Ab responses control microbiota composition and function to influence metabolic disease. We propose that many metabolic diseases may arise from disruptions to homeostatic immune control of gut commensals and that further understanding this interaction can offer a novel opportunity for therapeutic interventions.
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Affiliation(s)
- Kendra A Klag
- Division of Microbiology and Immunology, Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT; and
| | - June L Round
- Division of Microbiology and Immunology, Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT; and .,Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
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36
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Bowerman KL, Knowles SCL, Bradley JE, Baltrūnaitė L, Lynch MDJ, Jones KM, Hugenholtz P. Effects of laboratory domestication on the rodent gut microbiome. ISME COMMUNICATIONS 2021; 1:49. [PMID: 36747007 PMCID: PMC9723573 DOI: 10.1038/s43705-021-00053-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/22/2021] [Accepted: 09/03/2021] [Indexed: 05/01/2023]
Abstract
The domestication of the laboratory mouse has influenced the composition of its native gut microbiome, which is now known to differ from that of its wild ancestor. However, limited exploration of the rodent gut microbiome beyond the model species Mus musculus has made it difficult to interpret microbiome variation in a broader phylogenetic context. Here, we analyse 120 de novo and 469 public metagenomically-sequenced faecal and caecal samples from 16 rodent hosts representing wild, laboratory and captive lifestyles. Distinct gut bacterial communities were observed between rodent host genera, with broadly distributed species originating from the as-yet-uncultured bacterial genera UBA9475 and UBA2821 in the families Oscillospiraceae and Lachnospiraceae, respectively. In laboratory mice, Helicobacteraceae were generally depleted relative to wild mice and specific Muribaculaceae populations were enriched in different laboratory facilities, suggesting facility-specific outgrowths of this historically dominant rodent gut family. Several bacterial families of clinical interest, including Akkermansiaceae, Streptococcaceae and Enterobacteriaceae, were inferred to have gained over half of their representative species in mice within the laboratory environment, being undetected in most wild rodents and suggesting an association between laboratory domestication and pathobiont emergence.
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Affiliation(s)
- Kate L Bowerman
- School of Chemistry and Molecular Biosciences, Australian Centre for Ecogenomics, The University of Queensland, Brisbane, QLD, Australia.
| | | | | | | | | | - Kathryn M Jones
- Department of Biological Science, Florida State University, Tallahassee, FL, USA
| | - Philip Hugenholtz
- School of Chemistry and Molecular Biosciences, Australian Centre for Ecogenomics, The University of Queensland, Brisbane, QLD, Australia.
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37
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Subacute Exposure to an Environmentally Relevant Dose of Di-(2-ethylhexyl) Phthalate during Gestation Alters the Cecal Microbiome, but Not Pregnancy Outcomes in Mice. TOXICS 2021; 9:toxics9090215. [PMID: 34564366 PMCID: PMC8470982 DOI: 10.3390/toxics9090215] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/24/2021] [Accepted: 09/01/2021] [Indexed: 01/04/2023]
Abstract
Di-2-ethylhexyl phthalate (DEHP) is a plasticizer commonly found in polyvinyl chloride, medical equipment, and food packaging. DEHP has been shown to target the reproductive system and alter the gut microbiome in humans and experimental animals. However, very little is known about the impact of DEHP-induced microbiome changes and its effects during pregnancy. Thus, the objective of this study was to investigate the effects of DEHP exposure during pregnancy on the cecal microbiome and pregnancy outcomes. Specifically, this study tested the hypothesis that subacute exposure to DEHP during pregnancy alters the cecal microbiome in pregnant mice, leading to changes in birth outcomes. To test this hypothesis, pregnant dams were orally exposed to corn oil vehicle or 20 µg/kg/day DEHP for 10 days and euthanized 21 days after their last dose. Cecal contents were collected for 16S Illumina and shotgun metagenomic sequencing. Fertility studies were also conducted to examine whether DEHP exposure impacted birth outcomes. Subacute exposure to environmentally relevant doses of DEHP in pregnant dams significantly increased alpha diversity and significantly altered beta diversity. Furthermore, DEHP exposure during pregnancy significantly increased the relative abundance of Bacteroidetes and decreased the relative abundance of Firmicutes and Deferribacteres compared with controls. The affected taxonomic families included Deferribacteraceae, Lachnospiraceae, and Mucisprillum. In addition to changes in the gut microbiota, DEHP exposure significantly altered 14 functional pathways compared with the control. Finally, DEHP exposure did not significantly impact the fertility and birth outcomes compared with the control. Collectively, these data indicate that DEHP exposure during pregnancy shifts the cecal microbiome, but the shifts do not impact fertility and birth outcomes.
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Abstract
Immunoglobulin A (IgA) is the most abundant antibody at mucosal surfaces and has been the subject of many investigations involving microbiota research in the last decade. Although the classic functions of IgA include neutralization of harmful toxins, more recent investigations have highlighted an important role for IgA in regulating the composition and function of the commensal microbiota. Multiple reviews have comprehensively covered the literature that describes recent, novel mechanisms of action of IgA and development of the IgA response within the intestine. Here we focus on how the interaction between IgA and the microbiota promotes homeostasis with the host to prevent disease.
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Affiliation(s)
- Allison M Weis
- Department of Pathology, University of Utah School of Medicine, Division of Microbiology and Immunology, Salt Lake City, UT 84112, USA
| | - June L Round
- Department of Pathology, University of Utah School of Medicine, Division of Microbiology and Immunology, Salt Lake City, UT 84112, USA.
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39
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Takeuchi T, Ohno H. Reciprocal regulation of IgA and the gut microbiota: a key mutualism in the intestine. Int Immunol 2021; 33:781-786. [PMID: 34346497 DOI: 10.1093/intimm/dxab049] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 08/02/2021] [Indexed: 12/17/2022] Open
Abstract
The mammalian intestine is home to trillions of microbes, and their colonization contributes to host physiology through the production of indispensable metabolites and competition against pathogens. However, it is also important to balance this symbiotic relationship, as overgrowth and translocation of microbes could trigger a fatal infection. IgA is the major immunoglobulin class produced and secreted in the intestine and is considered to play a pivotal role in maintaining homeostasis. In this review, we summarize recent studies exploring the interactions between IgA and the gut microbiota, and explain how different types of IgA could coexist to regulate the gut microbiota. In particular, we discuss two important aspects of IgA in controlling the gut microbes: function and specificity. Differences in these two aspects appear attributable to how IgA is induced and are associated with the functions of IgA as well. Together, our review delineates a recent understanding of IgA-microbiome interactions and proposes a future direction to clarify its complexity.
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Affiliation(s)
- Tadashi Takeuchi
- Laboratory for Intestinal Ecosystem, RIKEN Center for Intestinal Ecosystem, Yokohama, Japan.,Department of Microbiology and Immunology, Keio University Graduate School of Medicine, Tokyo, Japan
| | - Hiroshi Ohno
- Laboratory for Intestinal Ecosystem, RIKEN Center for Intestinal Ecosystem, Yokohama, Japan
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40
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Luo XQ, Liu J, Mo LH, Yang G, Ma F, Ning Y, Yang PC, Liu DB. Flagellin Alleviates Airway Allergic Response by Stabilizing Eosinophils through Modulating Oxidative Stress. J Innate Immun 2021; 13:333-344. [PMID: 34289483 DOI: 10.1159/000515463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 02/20/2021] [Indexed: 11/19/2022] Open
Abstract
Eosinophil (Eo) degranulation plays a central role in the initiations of allergic attacks. Flagellin (FGN), the major component of bacterial flagella, has immune regulatory functions. This study aims to investigate the role of FGN in alleviating the allergic reaction by stabilizing Eos. A toll-like receptor 5-knockout mouse strain was employed to test the role of FGN in stabilizing Eos. An airway allergy mouse model was developed to test the administration of FGN in alleviating the airway allergy by stabilizing Eos. The results showed that FGN was required in stabilizing Eos in the airway tissues. FGN prevented specific antigen-induced Eo activation. Oxidative stress was associated with the antigen-induced Eo activation that could be counteracted by the presence of FGN. The FGN levels were lower and chymase levels were higher in the airway tissues of mice with allergic inflammation. Negative correlation was detected between the data of FGN and chymase in the lung tissues. Chymase physically contacted FGN to speed up its degradation. The administration of FGN alleviated experimental allergic inflammation in the mouse airways by stabilized Eos in the lung tissues. In conclusion, FGN contributes to Eo stabilization. The administration of FGN alleviates the experimental airway allergy. The data suggest that FGN can be a candidate to be employed in the treatment of allergic disorders.
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Affiliation(s)
- Xiang-Qian Luo
- Department of Pediatric Otolaryngology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Jun Liu
- Department of Medical Records Management, Shenzhen Maternal & Child Healthcare Hospital, Shenzhen, China
| | - Li-Hua Mo
- Department of Pediatric Otolaryngology, Shenzhen Hospital, Southern Medical University, Shenzhen, China.,Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, and Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Gui Yang
- Department of Otolaryngology, Longgang Central Hospital, Shenzhen, China
| | - Fei Ma
- Department of Traditional Chinese Medicine, Shenzhen Maternity & Child Healthcare Hospital, Shenzhen, China
| | - Yan Ning
- Department of Traditional Chinese Medicine, Shenzhen Maternity & Child Healthcare Hospital, Shenzhen, China
| | - Ping-Chang Yang
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, and Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Da-Bo Liu
- Department of Pediatric Otolaryngology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
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41
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De A, Chen W, Li H, Wright JR, Lamendella R, Lukin DJ, Szymczak WA, Sun K, Kelly L, Ghosh S, Kearns DB, He Z, Jobin C, Luo X, Byju A, Chatterjee S, Yeoh BS, Vijay-Kumar M, Tang JX, Prajapati M, Bartnikas TB, Mani S. Bacterial Swarmers Enriched During Intestinal Stress Ameliorate Damage. Gastroenterology 2021; 161:211-224. [PMID: 33741315 PMCID: PMC8601393 DOI: 10.1053/j.gastro.2021.03.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 03/06/2021] [Accepted: 03/09/2021] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND AIMS Bacterial swarming, a collective movement on a surface, has rarely been associated with human pathophysiology. This study aims to define a role for bacterial swarmers in amelioration of intestinal stress. METHODS We developed a polymicrobial plate agar assay to detect swarming and screened mice and humans with intestinal stress and inflammation. From chemically induced colitis in mice, as well as humans with inflammatory bowel disease, we developed techniques to isolate the dominant swarmers. We developed swarm-deficient but growth and swim-competent mutant bacteria as isogenic controls. We performed bacterial reinoculation studies in mice with colitis, fecal 16S, and meta-transcriptomic analyses, as well as in vitro microbial interaction studies. RESULTS We show that bacterial swarmers are highly predictive of intestinal stress in mice and humans. We isolated a novel Enterobacter swarming strain, SM3, from mouse feces. SM3 and other known commensal swarmers, in contrast to their mutant strains, abrogated intestinal inflammation in mice. Treatment of colitic mice with SM3, but not its mutants, enriched beneficial fecal anaerobes belonging to the family of Bacteroidales S24-7. We observed SM3 swarming associated pathways in the in vivo fecal meta-transcriptomes. In vitro growth of S24-7 was enriched in presence of SM3 or its mutants; however, because SM3, but not mutants, induced S24-7 in vivo, we concluded that swarming plays an essential role in disseminating SM3 in vivo. CONCLUSIONS Overall, our work identified a new but counterintuitive paradigm in which intestinal stress allows for the emergence of swarming bacteria; however, these bacteria act to heal intestinal inflammation.
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Affiliation(s)
- Arpan De
- Department of Medicine, Genetics and Molecular Pharmacology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Weijie Chen
- Department of Medicine, Genetics and Molecular Pharmacology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA,Department of Physics, Brown University, 182 Hope Street, Providence, RI 02912, USA
| | - Hao Li
- Department of Medicine, Genetics and Molecular Pharmacology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | | | | | - Dana J. Lukin
- Jill Roberts Center for Inflammatory Bowel Disease, 1283 York Avenue, New York, NY 10065, USA
| | - Wendy A. Szymczak
- Department of Pathology, Montefiore Medical Center, 111 E 210th Street, Bronx, NY 10467, USA
| | - Katherine Sun
- Department of Pathology, NYU Langone Health, 560 First Avenue, New York, NY 10016, USA
| | - Libusha Kelly
- Department of Systems & Computational Biology, and Department of Microbiology & Immunology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Subho Ghosh
- Department of Medicine, Genetics and Molecular Pharmacology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Daniel B. Kearns
- Department of Biology, Indiana University Bloomington, 107 S. Indiana Avenue, Bloomington, IN 47405, USA
| | - Zhen He
- Department of Medicine, University of Florida, Gainesville, FL 32611, USA
| | - Christian Jobin
- Department of Medicine, University of Florida, Gainesville, FL 32611, USA
| | - Xiaoping Luo
- Department of Medicine, Genetics and Molecular Pharmacology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Arjun Byju
- Department of Medicine, Genetics and Molecular Pharmacology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Shirshendu Chatterjee
- Department of Mathematics, The City University of New York, City College & Graduate Center, New York, NY 10031, USA
| | - Beng San Yeoh
- UT-Microbiome Consortium, Department of Physiology & Pharmacology, University of Toledo, College of Medicine & Life Sciences, 3000 Transverse Dr, Mail Stop 1008, Toledo, OH 43614, USA
| | - Matam Vijay-Kumar
- UT-Microbiome Consortium, Department of Physiology & Pharmacology, University of Toledo, College of Medicine & Life Sciences, 3000 Transverse Dr, Mail Stop 1008, Toledo, OH 43614, USA
| | - Jay X. Tang
- Department of Physics, Brown University, 182 Hope Street, Providence, RI 02912, USA
| | - Milankumar Prajapati
- Department of Pathology and Laboratory Medicine, Brown University, Providence, RI 02912, USA
| | - Thomas B. Bartnikas
- Department of Pathology and Laboratory Medicine, Brown University, Providence, RI 02912, USA
| | - Sridhar Mani
- Department of Medicine, Genetics and Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York.
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42
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Khan S, Luck H, Winer S, Winer DA. Emerging concepts in intestinal immune control of obesity-related metabolic disease. Nat Commun 2021; 12:2598. [PMID: 33972511 PMCID: PMC8110751 DOI: 10.1038/s41467-021-22727-7] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 03/22/2021] [Indexed: 12/19/2022] Open
Abstract
The intestinal immune system is an important modulator of glucose homeostasis and obesity-associated insulin resistance. Dietary factors, the intestinal microbiota and their metabolites shape intestinal immunity during obesity. The intestinal immune system in turn affects processes such as intestinal permeability, immune cell trafficking, and intestinal hormone availability, impacting systemic insulin resistance. Understanding these pathways might identify mechanisms underlying treatments for insulin resistance, such as metformin and bariatric surgery, or aid in developing new therapies and vaccination approaches. Here, we highlight evolving concepts centered on intestinal immunity, diet, and the microbiota to provide a working model of obesity-related metabolic disease.
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Affiliation(s)
- Saad Khan
- Department of Immunology, University of Toronto, Toronto, ON, Canada
- Division of Cellular & Molecular Biology, Diabetes Research Group, Toronto General Hospital Research Institute (TGHRI), University Health Network, Toronto, ON, Canada
| | - Helen Luck
- Division of Cellular & Molecular Biology, Diabetes Research Group, Toronto General Hospital Research Institute (TGHRI), University Health Network, Toronto, ON, Canada
| | - Shawn Winer
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Department of Laboratory Medicine, St. Michael's Hospital, Toronto, ON, Canada
| | - Daniel A Winer
- Department of Immunology, University of Toronto, Toronto, ON, Canada.
- Division of Cellular & Molecular Biology, Diabetes Research Group, Toronto General Hospital Research Institute (TGHRI), University Health Network, Toronto, ON, Canada.
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.
- Department of Pathology, University Health Network, Toronto, ON, Canada.
- Buck Institute for Research on Aging, Novato, CA, USA.
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43
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Łukasik Z, Gracey E, Venken K, Ritchlin C, Elewaut D. Crossing the boundaries: IL-23 and its role in linking inflammation of the skin, gut and joints. Rheumatology (Oxford) 2021; 60:iv16-iv27. [PMID: 33961030 PMCID: PMC8527243 DOI: 10.1093/rheumatology/keab385] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 04/17/2021] [Indexed: 11/17/2022] Open
Abstract
Several lines of evidence point towards the central role of IL-23 as a crucial inflammatory mediator in the pathogenesis of SpA—a group of inflammatory arthritic diseases whose symptoms span the skin, gastrointestinal tract and joints. While therapeutic blockade of IL-23 proved successful in the treatment of IBD, psoriatic skin disease and peripheral SpA, it failed in patients suffering from SpA with predominantly axial involvement. Here we review state-of-the-art discoveries on IL-23 signalling pathways across target tissues involved in SpA. We discuss the discrepancies in resident IL-23–responding cells and their downstream activities across skin, gut and joint that shape the unique immunological landscape of SpA.
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Affiliation(s)
- Zuzanna Łukasik
- Department of Internal Medicine and Pediatrics, UZ Ghent, Ghent University, Ghent, Belgium.,VIB Center for Inflammation Research, Ghent University, Belgium
| | - Eric Gracey
- Department of Internal Medicine and Pediatrics, UZ Ghent, Ghent University, Ghent, Belgium.,VIB Center for Inflammation Research, Ghent University, Belgium
| | - Koen Venken
- Department of Internal Medicine and Pediatrics, UZ Ghent, Ghent University, Ghent, Belgium.,VIB Center for Inflammation Research, Ghent University, Belgium
| | - Christopher Ritchlin
- Department of Medicine, University of Rochester Medical Center, Rochester, New York, USA
| | - Dirk Elewaut
- Department of Internal Medicine and Pediatrics, UZ Ghent, Ghent University, Ghent, Belgium.,VIB Center for Inflammation Research, Ghent University, Belgium.,Ghent Gut Inflammation Group, Ghent University, Ghent, Belgium
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44
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Liébana-García R, Olivares M, Bullich-Vilarrubias C, López-Almela I, Romaní-Pérez M, Sanz Y. The gut microbiota as a versatile immunomodulator in obesity and associated metabolic disorders. Best Pract Res Clin Endocrinol Metab 2021; 35:101542. [PMID: 33980476 DOI: 10.1016/j.beem.2021.101542] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Obesity has reached epidemic proportions and is associated with chronic-low-grade inflammation and metabolic morbidities. Energy-dense diets and a sedentary lifestyle are determinants of obesity. The gut microbiome is a novel biological factor involved in obesity via interactions with the host and the diet. The gut microbiome act as a synergistic force protecting or aggravating the effects of the diet on the metabolic phenotype. The role of the microbiome in the regulation of intestinal and systemic immunity is one of the mechanisms by which it contributes to the host's response to the diet and to the pathophysiology of diet-induced obesity. Here, we review the mechanisms whereby "obesogenic" diets and the microbiome impact immunity, locally and systemically, focusing on the consequences in the gut-adipose tissue axis. We also review the structural and microbial metabolites that influence immunity and how advances in this field could help design microbiome-informed strategies to tackle obesity-related disorders more effectively.
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Affiliation(s)
- Rebeca Liébana-García
- Microbial Ecology, Nutrition & Health Research Unit, Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain.
| | - Marta Olivares
- Microbial Ecology, Nutrition & Health Research Unit, Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain.
| | - Clara Bullich-Vilarrubias
- Microbial Ecology, Nutrition & Health Research Unit, Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain.
| | - Inmaculada López-Almela
- Microbial Ecology, Nutrition & Health Research Unit, Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain.
| | - Marina Romaní-Pérez
- Microbial Ecology, Nutrition & Health Research Unit, Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain.
| | - Yolanda Sanz
- Microbial Ecology, Nutrition & Health Research Unit, Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain.
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45
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Guo J, Han X, Huang W, You Y, Zhan J. Gut dysbiosis during early life: causes, health outcomes, and amelioration via dietary intervention. Crit Rev Food Sci Nutr 2021; 62:7199-7221. [PMID: 33909528 DOI: 10.1080/10408398.2021.1912706] [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] [Indexed: 12/28/2022]
Abstract
The colonization and maturation of gut microbiota (GM) is a delicate and precise process, which continues to influence not only infancy and childhood but also adulthood health by affecting immunity. However, many perinatal factors, including gestational age, delivery mode, antibiotic administration, feeding mode, and environmental and maternal factors, can disturb this well-designed process, increasing the morbidity of various gut dysbiosis-related diseases, such as type-1-diabetes, allergies, necrotizing enterocolitis, and obesity. In this review, we discussed the early-life colonization and maturation of the GM, factors influencing this process, and diseases related to the disruption of this process. Moreover, we focused on discussing dietary interventions, including probiotics, oligosaccharides, nutritional supplementation, and exclusive enteral nutrition, in ameliorating early-life dysbiosis and diseases related to it. Furthermore, possible mechanisms, and shortcomings, as well as potential solutions to the drawbacks of dietary interventions, were also discussed.
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Affiliation(s)
- Jielong Guo
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Xue Han
- Peking University School of Basic Medical Science, Peking University Health Science Centre, Beijing, China
| | - Weidong Huang
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Yilin You
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Jicheng Zhan
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
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46
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Guo J, Han X, Huang W, You Y, Jicheng Z. Interaction between IgA and gut microbiota and its role in controlling metabolic syndrome. Obes Rev 2021; 22:e13155. [PMID: 33150692 DOI: 10.1111/obr.13155] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 02/06/2023]
Abstract
Immunoglobulin A (IgA) is the most abundant immunoglobulin isotype secreted into the mucosal tissues, mainly intestinal mucus. Humans can produce several grams of IgA every day, accounting for three quarters of the body's total immunoglobulin content. IgA, together with mucus and antimicrobial peptides, forms the first line of defence for intestinal epithelial cells, protecting them from a significant number of intestinal antigens. IgA also plays a principal role in controlling the gut microbiota (GM), and disruption in IgA can result in dysbiosis, such as the enrichment of Proteobacteria, which are generally bound by IgA. Proteobacteria overexpansion is also usually seen in obesity and colitis. Consistent with this, IgA dysfunction frequently results in metabolic syndrome (MetS), including conditions such as obesity, adiposity, insulin resistance, and inflammation. In contrast, enhanced IgA function can improve, and even prevent, MetS. Interactions among IgA, GM, and metabolism provide a promising avenue to combat MetS.
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Affiliation(s)
- Jielong Guo
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Xue Han
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Weidong Huang
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Yilin You
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Zhan Jicheng
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
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47
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Abstract
A fundamental concept in immunology is that the innate immune system initiates or instructs downstream adaptive immune responses. Inflammasomes are central players in innate immunity to pathogens, but how inflammasomes shape adaptive immunity is complex and relatively poorly understood. Here we highlight recent work on the interplay between inflammasomes and adaptive immunity. We address how inflammasome-dependent release of cytokines and antigen activates, shapes or even inhibits adaptive immune responses. We consider how distinct tissue or cellular contexts may alter the effects of inflammasome activation on adaptive immunity and how this contributes to beneficial or detrimental outcomes in infectious diseases, cancer and autoimmunity. We aspire to provide a framework for thinking about inflammasomes and their connection to the adaptive immune response.
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48
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ICOS ligand and IL-10 synergize to promote host-microbiota mutualism. Proc Natl Acad Sci U S A 2021; 118:2018278118. [PMID: 33753483 DOI: 10.1073/pnas.2018278118] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Genome-wide association studies have identified ICOSLG, which encodes the inducible costimulator ligand (ICOSLG or ICOSL) as a susceptibility locus for inflammatory bowel disease. ICOSL has been implicated in the enhancement of pattern recognition receptor signaling in dendritic cells, induction of IL-10 production by CD4 T cells, and the generation of high-affinity antibodies to specific antigens-all of which can potentially explain its involvement in gastrointestinal inflammation. Here, we show that murine ICOSL deficiency results in significant enrichment of IL-10-producing CD4 T cells particularly in the proximal large intestine. Transient depletion of IL-10-producing cells from adult ICOSL-deficient mice induced severe colonic inflammation that was prevented when mice were first treated with metronidazole. ICOSL-deficient mice displayed reduced IgA and IgG antibodies in the colon mucus and impaired serum antibody recognition of microbial antigens, including flagellins derived from mucus-associated bacteria of the Lachnospiraceae family. Confirming the synergy between ICOSL and IL-10, ICOSL deficiency coupled with CD4-specific deletion of the Il10 gene resulted in juvenile onset colitis that was impeded when pups were fostered by ICOSL-sufficient dams. In this setting, we found that both maternally acquired and host-derived antibodies contribute to the life anti-commensal antibody repertoire that mediates this protection in early life. Collectively, our findings reveal a partnership between ICOSL-dependent anti-commensal antibodies and IL-10 in adaptive immune regulation of the microbiota in the large intestine. Furthermore, we identify ICOSL deficiency as an effective platform for exploring the functions of anti-commensal antibodies in host-microbiota mutualism.
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49
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B lymphocytes, the gastrointestinal tract and autoimmunity. Autoimmun Rev 2021; 20:102777. [PMID: 33609796 DOI: 10.1016/j.autrev.2021.102777] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 12/25/2020] [Indexed: 02/08/2023]
Abstract
Under homeostatic conditions, bidirectional interactions between the gastrointestinal and the immune system allow production of both inflammatory and anti-inflammatory responses designed to prevent undesirable inflammation and to respond efficiently to potential insults. This balanced regulation can be disrupted in disorders that affect tissues remote to the gastrointestinal tract, as seen in autoimmune diseases. Recent reports have described a variety of B lymphocyte-mediated functions that likely contribute to gastrointestinal homeostasis to a greater extent than previously thought. Studies have shown that early B cell development takes place within the intestine, and that self-reactive B cells are rendered tolerant using mechanisms known to occur in the bone marrow, indicating that the gastrointestinal tract contributes to maintaining immune tolerance to self. Relatedly, continuous bacterial stimulation is essential for maintaining regulatory B cell functions and for mediating mucosal homeostasis. In studies of neuro-inflammation, intestinal IgA+ B cells, which constitute a prominent source of lymphocytes in the organism, can migrate to inflamed tissues and exert regulatory functions that attenuate inflammation in the central nervous system, indicating that, in addition to its local effects in the intestin, gut microbiota-B cell crosstalk can exert long-range beneficial effects. At the translational level, metabolites produced by gut microbiota can act as B cell-intrinsic epigenetic modulators, reducing inflammation in the skin and kidneys of mice suffering from experimental lupus. Given the significant impact of B cell-intestinal microbiota interactions, there is a momentum for improving our understanding of these pathways in autoinflammatory diseases and for designing novel therapeutic strategies for systemic autoimmune diseases where B cells play key roles.
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50
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Abstract
Historically, the focus of type II diabetes mellitus (T2DM) research has been on host metabolism and hormone action. However, emerging evidence suggests that the gut microbiome, commensal microbes that colonize the gastrointestinal tract, also play a significant role in T2DM pathogenesis. Specifically, gut microbes metabolize what is available to them through the host diet to produce small molecule metabolites that can have endocrine-like effects on human cells. In fact, the meta-organismal crosstalk between gut microbe-generated metabolites and host receptor systems may represent an untapped therapeutic target for those at risk for or suffering from T2DM. Recent evidence suggests that gut microbe-derived metabolites can impact host adiposity, insulin resistance, and hormone secretion to collectively impact T2DM progression. Here we review the current evidence that structurally diverse gut microbe-derived metabolites, including short chain fatty acids, secondary bile acids, aromatic metabolites, trimethylamine-N-oxide, polyamines, and N-acyl amides, that can engage with host receptors in an endocrine-like manner to promote host metabolic disturbance associated with T2DM. Although these microbe-host signaling circuits are not as well understood as host hormonal signaling, they hold untapped potential as new druggable targets to improve T2DM complications. Whether drugs that selectively target meta-organismal endocrinology will be safe and efficacious in treating T2DM is a key new question in the field of endocrinology. Here we discuss the opportunities and challenges in targeting the gut microbial endocrine organ for the treatment of diabetes and potentially many other diseases where diet-microbe-host interactions play a contributory role.
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Affiliation(s)
- William Massey
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute of the Cleveland Clinic, Cleveland, OH, USA
- Center for Microbiome and Human Health, Lerner Research Institute of the Cleveland Clinic, Cleveland, OH, USA
| | - J Mark Brown
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute of the Cleveland Clinic, Cleveland, OH, USA
- Center for Microbiome and Human Health, Lerner Research Institute of the Cleveland Clinic, Cleveland, OH, USA
- Correspondence: J. Mark Brown, Department of Cardiovascular and Metabolic Sciences, Cleveland Clinic, Cleveland, OH 44195, USA.
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