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Hoffsten A, Markasz L, Lilja HE, Mobini-Far H, Sindelar R. Reduced Expression of REG4 as a Sign of Altered Goblet Cell Function in Necrotizing Enterocolitis. Am J Perinatol 2024. [PMID: 39008984 DOI: 10.1055/s-0044-1787739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
OBJECTIVE Defective Goblet cells have been proposed to be involved in necrotizing enterocolitis (NEC). The aim was to study the expression of the Goblet cell marker REG4 and its potential involvement in NEC in preterm infants with and without NEC. STUDY DESIGN Seventy histologically intact intestinal biopsies were studied: 43 were collected during surgery due to NEC (NEC group: 26.5 ± 3.0 weeks' gestational age [wGA]), and 27 from individuals who underwent surgery due to other conditions (Control group; 36.1 ± 4.5 wGA). The tissue samples were immunohistochemically stained for REG4. REG4 expression was quantified with a semiautomated digital image analysis and with clinical data compared between the groups. RESULTS REG4 expression was lower in the NEC group than in the Control group (p = 0.035). Low REG4 expression correlated to the risk of NEC (p = 0.023). In a multivariable logistic regression analysis including GA and REG4 expression for NEC risk, only GA (p < 0.001) and not REG4 expression (p = 0.206) was associated with NEC risk. CONCLUSION This study concludes that Goblet cell dysfunction may be involved in NEC development, as low expression of the Goblet cell marker REG4 was related to an increased NEC risk in preterm infants. Maturity could however not be excluded as a potential confounder for REG4 expression. KEY POINTS · REG4 is a specific Goblet cell marker not yet studied in NEC.. · REG4 was quantified in intestinal biopsies from infants with and without NEC.. · REG4 expression was lower in infants with NEC, and expression seems to be maturity dependent..
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Affiliation(s)
- Alice Hoffsten
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
| | - Laszlo Markasz
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
- Neonatology Division, University Children's Hospital, Uppsala, Sweden
| | - Helene Engstrand Lilja
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Hamid Mobini-Far
- Department of Pathology, Uppsala University Hospital, Uppsala, Sweden
- Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Richard Sindelar
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
- Neonatology Division, University Children's Hospital, Uppsala, Sweden
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Wan C, Ji T, Wang L, Wu Q, Chen Q, Wang Y, Li Y, He F, Liu W, Zhong W, Wang B. Exploring the molecular mechanisms and shared gene signatures between celiac disease and ulcerative colitis based on bulk RNA and single-cell sequencing: Experimental verification. Int Immunopharmacol 2024; 133:112059. [PMID: 38615385 DOI: 10.1016/j.intimp.2024.112059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/31/2023] [Accepted: 04/08/2024] [Indexed: 04/16/2024]
Abstract
Many immune-mediated diseases have the common genetic basis, as an autoimmune disorder, celiac disease (CeD) primarily affects the small intestine, and is caused by the ingestion of gluten in genetically susceptible individuals. As for ulcerative colitis (UC), which most likely involves a complex interplay between some components of the commensal microbiota and other environmental factors in its origin. These two autoimmune diseases share a specific target organ, the bowel. The etiology and immunopathogenesis of both conditions characterized by chronic intestinal inflammation, ulcerative colitis and celiac disease, are not completely understood. Both are complex diseases with genetics and the environmental factors contributing to dysregulation of innate and adaptive immune responses, leading to chronic inflammation and disease. This study is designed to further clarify the relationship between UC and CeD. The GEO database was used to download gene expression profiles for CeD (GSE112102) and UC (GSE75214). The GSEA KEGG pathway analysis revealed that immune-related pathways were significantly associated with both diseases. Further, we screened 187 shared differentially expressed genes (DEGs) of the two diseases. Gene Ontology (GO) and WikiPathways were carried out to perform the biological process and pathway enrichment analysis. Subsequently, based on the DEGs, the least absolute shrinkage and selection operator (LASSO) analysis was performed to screen for the diagnostic biomarkers of the diseases. Moreover, single-cell RNA-sequencing (RNA-seq) data from five colonic propria with UC showed that REG4 expression was present in Goblet cell, Enteroendocrine cell, and Epithelial. Finally, our work identified REG4 is the shared gene of UC and CeD via external data validation, cellular experiments, and immunohistochemistry. In conclusion, our study elucidated that abnormal immune response could be the common pathogenesis of UC and CeD, and REG4 might be a key potential biomarker and therapeutic target for the comorbidity of these two diseases.
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Affiliation(s)
- Changshan Wan
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin 300052, China
| | - Tao Ji
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin 300052, China; Department of Gastroenterology, Linyi People's Hospital, Shandong 276000, China
| | - Liwei Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin 300052, China
| | - Qiuyan Wu
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin 300052, China
| | - Qiuyu Chen
- Department of Gastroenterology, Tianjin First Central Hospital of Tianjin Medical University, Tianjin 300192, China
| | - Yali Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin 300052, China
| | - Yaqian Li
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin 300052, China
| | - Fengming He
- Department of Clinical Laboratory Medicine, Shanxi Medical University, Taiyuan 030600, Shanxi, 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 300052, 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 300052, 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 300052, China.
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Wan X, Wang W, Zhu J, Xiao Y. Antibacterial peptide Reg4 ameliorates Pseudomonas aeruginosa-induced pulmonary inflammation and fibrosis. Microbiol Spectr 2024; 12:e0390523. [PMID: 38501823 PMCID: PMC11064540 DOI: 10.1128/spectrum.03905-23] [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: 11/14/2023] [Accepted: 03/08/2024] [Indexed: 03/20/2024] Open
Abstract
Pseudomonas aeruginosa (P. aeruginosa) is a Gram-negative facultative anaerobe that has become an important cause of severe infections in humans, particularly in patients with cystic fibrosis. The development of efficacious methods or mendicants against P. aeruginosa is still needed. We previously reported that regenerating islet-derived family member 4 (Reg4) has bactericidal activity against Salmonella Typhimurium, a Gram-negative flagellated bacterium. We herein explore whether Reg4 has bactericidal activity against P. aeruginosa. In the P. aeruginosa PAO1-chronic infection model, Reg4 significantly inhibits the colonization of PAO1 in the lung and subsequently ameliorates pulmonary inflammation and fibrosis. Reg4 recombinant protein suppresses the growth motility and biofilm formation capability of PAO1 in vitro. Mechanistically, Reg4 not only exerts bactericidal action via direct binding to the P. aeruginosa cell wall but also enhances the phagocytosis of alveolar macrophages in the host. Taken together, our study demonstrates that Reg4 may provide protection against P. aeruginosa-induced pulmonary inflammation and fibrosis via its antibacterial activity.IMPORTANCEChronic lung infection with Pseudomonas aeruginosa is a leading cause of morbidity and mortality in patients with cystic fibrosis. Due to the antibiotic resistance of Pseudomonas aeruginosa, antimicrobial peptides appear to be a potential alternative to combat its infection. In this study, we report an antimicrobial peptide, regenerating islet-derived 4 (Reg4), that showed killing activity against clinical strains of Pseudomonas aeruginosa PAO1 and ameliorated PAO1-induced pulmonary inflammation and fibrosis. Experimental data also showed Reg4 directly bound to the bacterial cell membrane and enhanced the phagocytosis of host alveolar macrophages. Our presented study will be a helpful resource in searching for novel antimicrobial peptides that could have the potential to replace conventional antibiotics.
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Affiliation(s)
- Xiaoyu Wan
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Weipeng Wang
- Xin Hua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jing Zhu
- Xin Hua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yongtao Xiao
- Xin Hua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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4
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Chu L, Bi C, Wang C, Zhou H. The Relationship between Complements and Age-Related Macular Degeneration and Its Pathogenesis. J Ophthalmol 2024; 2024:6416773. [PMID: 38205100 PMCID: PMC10776198 DOI: 10.1155/2024/6416773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 06/08/2023] [Accepted: 12/23/2023] [Indexed: 01/12/2024] Open
Abstract
Age-related macular degeneration is a retinal disease that causes permanent loss of central vision in people over the age of 65. Its pathogenesis may be related to mitochondrial dysfunction, inflammation, apoptosis, autophagy, complement, intestinal flora, and lipid disorders. In addition, the patient's genes, age, gender, cardiovascular disease, unhealthy diet, and living habits may also be risk factors for this disease. Complement proteins are widely distributed in serum and tissue fluid. In the early 21st century, a connection was found between the complement cascade and age-related macular degeneration. However, little is known about the effect of complement factors on the pathogenesis of age-related macular degeneration. This article reviews the factors associated with age-related macular degeneration, the relationship between each factor and complement, the related functions, and variants and provides new ideas for the treatment of this disease.
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Affiliation(s)
- Liyuan Chu
- Department of Ophthalmology, China–Japan Union Hospital of Jilin University, Changchun, China
| | - Chaoran Bi
- College of Traditional Chinese Medicine, Hainan Medical University, Haikou, Hainan, China
| | - Caiming Wang
- Department of Ophthalmology, China–Japan Union Hospital of Jilin University, Changchun, China
| | - Hongyan Zhou
- Department of Ophthalmology, China–Japan Union Hospital of Jilin University, Changchun, China
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5
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Husso A, Pessa-Morikawa T, Koistinen VM, Kärkkäinen O, Kwon HN, Lahti L, Iivanainen A, Hanhineva K, Niku M. Impacts of maternal microbiota and microbial metabolites on fetal intestine, brain, and placenta. BMC Biol 2023; 21:207. [PMID: 37794486 PMCID: PMC10552303 DOI: 10.1186/s12915-023-01709-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 09/21/2023] [Indexed: 10/06/2023] Open
Abstract
BACKGROUND The maternal microbiota modulates fetal development, but the mechanisms of these earliest host-microbe interactions are unclear. To investigate the developmental impacts of maternal microbial metabolites, we compared full-term fetuses from germ-free and specific pathogen-free mouse dams by gene expression profiling and non-targeted metabolomics. RESULTS In the fetal intestine, critical genes mediating host-microbe interactions, innate immunity, and epithelial barrier were differentially expressed. Interferon and inflammatory signaling genes were downregulated in the intestines and brains of the fetuses from germ-free dams. The expression of genes related to neural system development and function, translation and RNA metabolism, and regulation of energy metabolism were significantly affected. The gene coding for the insulin-degrading enzyme (Ide) was most significantly downregulated in all tissues. In the placenta, genes coding for prolactin and other essential regulators of pregnancy were downregulated in germ-free dams. These impacts on gene expression were strongly associated with microbially modulated metabolite concentrations in the fetal tissues. Aryl sulfates and other aryl hydrocarbon receptor ligands, the trimethylated compounds TMAO and 5-AVAB, Glu-Trp and other dipeptides, fatty acid derivatives, and the tRNA nucleobase queuine were among the compounds strongly associated with gene expression differences. A sex difference was observed in the fetal responses to maternal microbial status: more genes were differentially regulated in male fetuses than in females. CONCLUSIONS The maternal microbiota has a major impact on the developing fetus, with male fetuses potentially more susceptible to microbial modulation. The expression of genes important for the immune system, neurophysiology, translation, and energy metabolism are strongly affected by the maternal microbial status already before birth. These impacts are associated with microbially modulated metabolites. We identified several microbial metabolites which have not been previously observed in this context. Many of the potentially important metabolites remain to be identified.
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Affiliation(s)
- Aleksi Husso
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Tiina Pessa-Morikawa
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Ville Mikael Koistinen
- Food Sciences Unit, Department of Life Technologies, University of Turku, Turku, Finland
- Institute of Public Health and Clinical Nutrition, School of Medicine, University of Eastern Finland, Kuopio, Finland
- Afekta Technologies Ltd., Kuopio, Finland
| | - Olli Kärkkäinen
- Afekta Technologies Ltd., Kuopio, Finland
- School of Pharmacy, University of Eastern Finland, Kuopio, Finland
| | - Hyuk Nam Kwon
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
- School of Biological Sciences and Basic-Clinical Convergence Research Institute, University of Ulsan, Ulsan, 44610, South Korea
| | - Leo Lahti
- Department of Computing, University of Turku, Turku, Finland
| | - Antti Iivanainen
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Kati Hanhineva
- Food Sciences Unit, Department of Life Technologies, University of Turku, Turku, Finland
- Institute of Public Health and Clinical Nutrition, School of Medicine, University of Eastern Finland, Kuopio, Finland
- Afekta Technologies Ltd., Kuopio, Finland
| | - Mikael Niku
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.
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6
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Jang KK, Heaney T, London M, Ding Y, Putzel G, Yeung F, Ercelen D, Chen YH, Axelrad J, Gurunathan S, Zhou C, Podkowik M, Arguelles N, Srivastava A, Shopsin B, Torres VJ, Keestra-Gounder AM, Pironti A, Griffin ME, Hang HC, Cadwell K. Antimicrobial overproduction sustains intestinal inflammation by inhibiting Enterococcus colonization. Cell Host Microbe 2023; 31:1450-1468.e8. [PMID: 37652008 PMCID: PMC10502928 DOI: 10.1016/j.chom.2023.08.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 07/02/2023] [Accepted: 08/07/2023] [Indexed: 09/02/2023]
Abstract
Loss of antimicrobial proteins such as REG3 family members compromises the integrity of the intestinal barrier. Here, we demonstrate that overproduction of REG3 proteins can also be detrimental by reducing a protective species in the microbiota. Patients with inflammatory bowel disease (IBD) experiencing flares displayed heightened levels of secreted REG3 proteins that mediated depletion of Enterococcus faecium (Efm) from the gut microbiota. Efm inoculation of mice ameliorated intestinal inflammation through activation of the innate immune receptor NOD2, which was associated with the bacterial DL-endopeptidase SagA that generates NOD2-stimulating muropeptides. NOD2 activation in myeloid cells induced interleukin-1β (IL-1β) secretion to increase the proportion of IL-22-producing CD4+ T helper cells and innate lymphoid cells that promote tissue repair. Finally, Efm was unable to protect mice carrying a NOD2 gene variant commonly found in IBD patients. Our findings demonstrate that inflammation self-perpetuates by causing aberrant antimicrobial activity that disrupts symbiotic relationships with gut microbes.
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Affiliation(s)
- Kyung Ku Jang
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Thomas Heaney
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Mariya London
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Yi Ding
- Department of Laboratory Medicine, Geisinger Health, Danville, PA 17822, USA
| | - Gregory Putzel
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY 10016, USA; Antimicrobial-Resistant Pathogens Program, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Frank Yeung
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Defne Ercelen
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Ying-Han Chen
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Jordan Axelrad
- Division of Gastroenterology and Hepatology, Department of Medicine, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Sakteesh Gurunathan
- Division of Gastroenterology and Hepatology, Department of Medicine, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Chaoting Zhou
- Cell and Molecular Biology Graduate Program, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA; Division of Gastroenterology and Hepatology, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Magdalena Podkowik
- Antimicrobial-Resistant Pathogens Program, New York University Grossman School of Medicine, New York, NY 10016, USA; Division of Infectious Diseases and Immunology, Department of Medicine, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Natalia Arguelles
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY 10016, USA; Antimicrobial-Resistant Pathogens Program, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Anusha Srivastava
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY 10016, USA; Antimicrobial-Resistant Pathogens Program, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Bo Shopsin
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY 10016, USA; Antimicrobial-Resistant Pathogens Program, New York University Grossman School of Medicine, New York, NY 10016, USA; Division of Infectious Diseases and Immunology, Department of Medicine, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Victor J Torres
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY 10016, USA; Antimicrobial-Resistant Pathogens Program, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - A Marijke Keestra-Gounder
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Alejandro Pironti
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY 10016, USA; Antimicrobial-Resistant Pathogens Program, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Matthew E Griffin
- Department of Immunology and Microbiology, Scripps Research, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Howard C Hang
- Department of Immunology and Microbiology, Scripps Research, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA; Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Ken Cadwell
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA; Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA; Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA.
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7
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Gao Y, Yang Y, Wei J, Yue J, Wang Y, Zhang Q, Jin M, Wang R, Yang X, Zhang J, Liu X, Liu L, Zhang Y, Yang R. LNCGM1082-mediated NLRC4 activation drives resistance to bacterial infection. Cell Mol Immunol 2023; 20:475-488. [PMID: 36941318 PMCID: PMC10203293 DOI: 10.1038/s41423-023-00995-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 02/23/2023] [Indexed: 03/23/2023] Open
Abstract
The activation of NLRC4 is a major host response against intracellular bacteria infection. However, NLRC4 activation after a host senses diverse stimuli is difficult to understand. Here, we found that the lncRNA LNCGM1082 plays a critical role in the activation of NLRC4. LNCGM1082 in macrophages affects the maturation of interleukin (IL)-1β and pyroptotic cell death only after exposure to an NLRC4 ligand. Similar to NLRC4-/- mice, LNCGM1082-/- mice were highly sensitive to Salmonella Typhimurium (S. T) infection. LNCGM1082 deficiency in mouse or human macrophages inhibited IL-1β maturation and pyroptosis. Mechanistically, LNCGM1082 induced the binding of PKCδ with NLRC4 in both mice and humans. In contrast, NLRC4 did not bind PKCδ in LNCGM1082-/- macrophages. The activity of the lncRNA LNCGM1082 induced by S. T may be mediated through TLR5 in the macrophages of both mice and humans. In summary, our data indicate that TLR5-mediated LNCGM1082 activity can promote the binding of PKCδ with NLRC4 to activate NLRC4 and induce resistance to bacterial infection.
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Affiliation(s)
- Yunhuan Gao
- Department of Immunology, Nankai University School of Medicine and Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, 300071, China
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, China
| | - Yazheng Yang
- Department of Immunology, Nankai University School of Medicine and Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, 300071, China
| | - Jianmei Wei
- Department of Immunology, Nankai University School of Medicine and Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, 300071, China
| | - Jianmei Yue
- Department of Immunology, Nankai University School of Medicine and Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, 300071, China
| | - Ya Wang
- Department of Immunology, Nankai University School of Medicine and Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, 300071, China
| | - Qianjing Zhang
- Department of Immunology, Nankai University School of Medicine and Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, 300071, China
| | - Mengli Jin
- Department of Immunology, Nankai University School of Medicine and Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, 300071, China
| | - Rong Wang
- Department of Immunology, Nankai University School of Medicine and Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, 300071, China
| | - Xiaorong Yang
- Department of Immunology, Nankai University School of Medicine and Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, 300071, China
| | - Junqi Zhang
- College of Life Science, Nankai University, Tianjin, 300121, China
| | - Xinqi Liu
- College of Life Science, Nankai University, Tianjin, 300121, China
| | - Lin Liu
- China National Center for Bioinformation & Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Yuan Zhang
- Department of Immunology, Nankai University School of Medicine and Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, 300071, China
| | - Rongcun Yang
- Department of Immunology, Nankai University School of Medicine and Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, 300071, China.
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, China.
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8
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Jang KK, Heaney T, London M, Ding Y, Yeung F, Ercelen D, Chen YH, Axelrad J, Gurunathan S, Marijke Keestra-Gounder A, Griffin ME, Hang HC, Cadwell K. Antimicrobial overproduction sustains intestinal inflammation by inhibiting Enterococcus colonization. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.29.526128. [PMID: 36778381 PMCID: PMC9915521 DOI: 10.1101/2023.01.29.526128] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Loss of antimicrobial proteins such as REG3 family members compromises the integrity of the intestinal barrier. Here, we demonstrate that overproduction of REG3 proteins can also be detrimental by reducing a protective species in the microbiota. Patients with inflammatory bowel disease (IBD) experiencing flares displayed heightened levels of secreted REG3 proteins that mediated depletion of Enterococcus faecium ( Efm ) from the gut microbiota. Efm inoculation of mice ameliorated intestinal inflammation through activation of the innate immune receptor NOD2, which was associated with the bacterial DL-endopeptidase SagA. Microbiota sensing by NOD2 in myeloid cells mediated IL-1β secretion and increased the proportion of IL-22-producing CD4 + T helper cells and innate lymphoid cells. Finally, Efm was unable to protect mice carrying a NOD2 gene variant commonly found in IBD patients. Our findings demonstrate that inflammation self-perpetuates by causing aberrant antimicrobial activity that disrupts symbiotic relationships with gut microbes.
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9
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Videlock EJ, Hatami A, Zhu C, Kawaguchi R, Chen H, Khan T, Yehya AHS, Stiles L, Joshi S, Hoffman JM, Law KM, Rankin CR, Chang L, Maidment NT, John V, Geschwind DH, Pothoulakis C. Distinct Patterns of Gene Expression Changes in the Colon and Striatum of Young Mice Overexpressing Alpha-Synuclein Support Parkinson's Disease as a Multi-System Process. JOURNAL OF PARKINSON'S DISEASE 2023; 13:1127-1147. [PMID: 37638450 PMCID: PMC10657720 DOI: 10.3233/jpd-223568] [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] [Accepted: 08/04/2023] [Indexed: 08/29/2023]
Abstract
BACKGROUND Evidence supports a role for the gut-brain axis in Parkinson's disease (PD). Mice overexpressing human wild type α- synuclein (Thy1-haSyn) exhibit slow colonic transit prior to motor deficits, mirroring prodromal constipation in PD. Identifying molecular changes in the gut could provide both biomarkers for early diagnosis and gut-targeted therapies to prevent progression. OBJECTIVE To identify early molecular changes in the gut-brain axis in Thy1-haSyn mice through gene expression profiling. METHODS Gene expression profiling was performed on gut (colon) and brain (striatal) tissue from Thy1-haSyn and wild-type (WT) mice aged 1 and 3 months using 3' RNA sequencing. Analysis included differential expression, gene set enrichment and weighted gene co-expression network analysis (WGCNA). RESULTS At one month, differential expression (Thy1-haSyn vs. WT) of mitochondrial genes and pathways related to PD was discordant between gut and brain, with negative enrichment in brain (enriched in WT) but positive enrichment in gut. Linear regression of WGCNA modules showed partial independence of gut and brain gene expression changes. Thy1-haSyn-associated WGCNA modules in the gut were enriched for PD risk genes and PD-relevant pathways including inflammation, autophagy, and oxidative stress. Changes in gene expression were modest at 3 months. CONCLUSIONS Overexpression of haSyn acutely disrupts gene expression in the colon. While changes in colon gene expression are highly related to known PD-relevant mechanisms, they are distinct from brain changes, and in some cases, opposite in direction. These findings are in line with the emerging view of PD as a multi-system disease.
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Affiliation(s)
- Elizabeth J. Videlock
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Asa Hatami
- The Drug Discovery Lab, Mary S. Easton Center for Alzheimer’s Disease Research, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Chunni Zhu
- The Drug Discovery Lab, Mary S. Easton Center for Alzheimer’s Disease Research, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Riki Kawaguchi
- The Center for Neurobehavioral Genetics, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA, USA
| | - Han Chen
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Tasnin Khan
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Ashwaq Hamid Salem Yehya
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Linsey Stiles
- Department of Medicine, Division of Endocrinology, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Swapna Joshi
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Jill M. Hoffman
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Ka Man Law
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Carl Robert Rankin
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Lin Chang
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Nigel T. Maidment
- Hatos Center for Neuropharmacology, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA, USA
- Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Varghese John
- The Drug Discovery Lab, Mary S. Easton Center for Alzheimer’s Disease Research, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Daniel H. Geschwind
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
- Center for Autism Research and Treatment, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA, USA
- Institute for Precision Health, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Charalabos Pothoulakis
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
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10
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Zhang Q, Su X, Zhang C, Chen W, Wang Y, Yang X, Liu D, Zhang Y, Yang R. Klebsiella pneumoniae Induces Inflammatory Bowel Disease Through Caspase-11-Mediated IL18 in the Gut Epithelial Cells. Cell Mol Gastroenterol Hepatol 2023; 15:613-632. [PMID: 36436756 PMCID: PMC9871440 DOI: 10.1016/j.jcmgh.2022.11.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND & AIMS Klebsiella pneumoniae (KLP), a Gram-negative bacterium belonging to the family of Enterobacteriaceae, is a common cause of antimicrobial-resistant opportunistic infections in hospitalized patients. KLP can colonize in the human gastrointestinal tract, especially in patients with inflammatory bowel diseases. However, effects of KLP on the onset and development of inflammatory bowel disease remain unclear. METHODS We analyzed the relationship between Mayo indexes of ulcerative colitis and KLP using quantitative reverse-transcription polymerase chain reaction and endoscopy. Using caspase-1/11-/-, NLRP3-/-, NLRC4-/-, interleukin (IL)18-/-, and IL22-/- mice, we showed that KLP could induce colitis through caspase-11-mediated release of mature IL18. Through in vitro gut organoid culture, we determined the mechanism for KLP to induce colitis. RESULTS We first found that there was a positive relationship between the Mayo indexes of ulcerative colitis and KLP. Then, we isolated a strain of KLP, named Klebsiella pneumoniae J (KLPJ), from the colon tissues of patients with colitis. This strain of bacteria could induce the production of mature IL18 in colon epithelial cells and gut organoids, and also induce colitis and promote dextran sodium sulfate-mediated colitis. Using caspase-1/11-/-, NLRP3-/-, NLRC4-/-, IL18-/-, and IL22-/- mice, we showed that KLPJ-mediated colitis occurred through activation of caspase-11, and was dependent on IL18 and partly on IL22. Our data also showed that lipopolysaccharide from KLPJ could bind with caspase-11 to induce mature IL18 in mouse and human colon organoids. CONCLUSIONS KLPJ from the colon tissues of patients with ulcerative colitis can colonize the colon, activate caspase-11 inflammasomes, and contribute to intestinal inflammation.
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Affiliation(s)
- Qianjin Zhang
- Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, China; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China; 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
| | - Chunze Zhang
- Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, China
| | - Wei Chen
- Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, China; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China; Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Ya Wang
- Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, China; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China; Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Xiaorong Yang
- Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, China; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China; Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Dan Liu
- Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, China; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China; Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Yuan Zhang
- Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, China; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China; Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Rongcun Yang
- Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Nankai University, Tianjin, China; State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China; Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China.
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11
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Pinchaud K, Hafeez Z, Auger S, Chatel JM, Chadi S, Langella P, Paoli J, Dary-Mourot A, Maguin-Gaté K, Olivier JL. Impact of Dietary Arachidonic Acid on Gut Microbiota Composition and Gut-Brain Axis in Male BALB/C Mice. Nutrients 2022; 14:nu14245338. [PMID: 36558497 PMCID: PMC9786182 DOI: 10.3390/nu14245338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
Although arachidonic acid (ARA) is the precursor of the majority of eicosanoids, its influence as a food component on health is not well known. Therefore, we investigated its impact on the gut microbiota and gut-brain axis. Groups of male BALB/c mice were fed either a standard diet containing 5% lipids (Std-ARA) or 15%-lipid diets without ARA (HL-ARA) or with 1% ARA (HL + ARA) for 9 weeks. Fatty acid profiles of all three diets were the same. The HL-ARA diet favored the growth of Bifidobacterium pseudolongum contrary to the HL + ARA diet that favored the pro-inflammatory Escherichia-Shigella genus in fecal microbiota. Dietary ARA intake induced 4- and 15-fold colic overexpression of the pro-inflammatory markers IL-1β and CD40, respectively, without affecting those of TNFα and adiponectin. In the brain, dietary ARA intake led to moderate overexpression of GFAP in the hippocampus and cortex. Both the hyperlipidic diets reduced IL-6 and IL-12 in the brain. For the first time, it was shown that dietary ARA altered the gut microbiota, led to low-grade colic inflammation, and induced astrogliosis in the brain. Further work is necessary to determine the involved mechanisms.
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Affiliation(s)
- Katleen Pinchaud
- Calbinotox (UR7488), Université de Lorraine, 54000 Nancy, France
| | - Zeeshan Hafeez
- Calbinotox (UR7488), Université de Lorraine, 54000 Nancy, France
| | - Sandrine Auger
- INRAE, Université Paris-Saclay, AgroParisTech, UMR 1319 Micalis Institute, 78352 Jouy-en-Josas, France
| | - Jean-Marc Chatel
- INRAE, Université Paris-Saclay, AgroParisTech, UMR 1319 Micalis Institute, 78352 Jouy-en-Josas, France
| | - Sead Chadi
- INRAE, Université Paris-Saclay, AgroParisTech, UMR 1319 Micalis Institute, 78352 Jouy-en-Josas, France
| | - Philippe Langella
- INRAE, Université Paris-Saclay, AgroParisTech, UMR 1319 Micalis Institute, 78352 Jouy-en-Josas, France
| | - Justine Paoli
- Calbinotox (UR7488), Université de Lorraine, 54000 Nancy, France
| | | | - Katy Maguin-Gaté
- Calbinotox (UR7488), Université de Lorraine, 54000 Nancy, France
| | - Jean Luc Olivier
- Calbinotox (UR7488), Université de Lorraine, 54000 Nancy, France
- CHRU de Nancy, Pôle des Laboratoires, Service de Biochimie-Biologie Moléculaire-Nutrition, 54000 Nancy, France
- Correspondence:
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12
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Wang W, Wang Y, Lu Y, Zhu J, Tian X, Wu B, Du J, Cai W, Xiao Y. Reg4 protects against Salmonella infection-associated intestinal inflammation via adopting a calcium-dependent lectin-like domain. Int Immunopharmacol 2022; 113:109310. [DOI: 10.1016/j.intimp.2022.109310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 09/19/2022] [Accepted: 09/30/2022] [Indexed: 11/05/2022]
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13
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Zheng HC, Xue H, Zhang CY. REG4 promotes the proliferation and anti-apoptosis of cancer. Front Cell Dev Biol 2022; 10:1012193. [PMID: 36172286 PMCID: PMC9511136 DOI: 10.3389/fcell.2022.1012193] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 08/26/2022] [Indexed: 11/27/2022] Open
Abstract
Regenerating islet-derived 4 (REG4) gene was discovered by high-throughput sequencing of ulcerative colitis cDNA libraries. REG4 is involved in infection and inflammation by enhancing macrophage polarization to M2, via activation of epidermal growth factor receptor (EGFR)/Akt/cAMP-responsive element binding and the killing inflammatory Escherichia coli, and closely linked to tumorigenesis. Its expression was transcriptionally activated by caudal type homeobox 2, GATA binding protein 6, GLI family zinc finger 1, SRY-box transcription factor 9, CD44 intracytoplasmic domain, activating transcription factor 2, and specificity protein 1, and translationally activated by miR-24. REG4 can interact with transmembrane CD44, G protein-coupled receptor 37, mannan and heparin on cancer cells. Its overexpression was observed in gastric, colorectal, pancreatic, gallbladder, ovarian and urothelial cancers, and is closely linked to their aggressive behaviors and a poor prognosis. Additionally, REG4 expression and recombinant REG4 aggravated such cellular phenotypes as tumorigenesis, proliferation, anti-apoptosis, chemoradioresistance, migration, invasion, peritoneal dissemination, tumor growth, and cancer stemness via EGFR/Akt/activator protein-1 and Akt/glycogen synthase kinase three β/β-catenin/transcription factor 4 pathways. Sorted REG4-positive deep crypt secretory cells promote organoid formation of single Lgr5 (+) colon stem cells by Notch inhibition and Wnt activation. Histologically, REG4 protein is specifically expressed in neuroendocrine tumors and signet ring cell carcinomas of the gastrointestinal tract, pancreas, ovary, and lung. It might support the histogenesis of gastric intestinal–metaplasia–globoid dysplasia–signet ring cell carcinoma. In this review, we summarized the structure, biological functions, and effects of REG4 on inflammation and cancer. We conclude that REG4 may be employed as a biomarker of tumorigenesis, subsequent progression and poor prognosis of cancer, and may be a useful target for gene therapy.
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Affiliation(s)
- Hua-Chuan Zheng
- Department of Oncology and Central Laboratory, The Affiliated Hospital of Chengde Medical University, Chengde, China
- *Correspondence: Hua-Chuan Zheng,
| | - Hang Xue
- Department of Oncology and Central Laboratory, The Affiliated Hospital of Chengde Medical University, Chengde, China
| | - Cong-Yu Zhang
- Cancer Center, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
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14
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Li X, Shi X, Mesalam NM, Liu L, Chen Z, Yang B. Mechanism of Lysoforte in Improving Jejuna Morphology and Health in Broiler Chickens. Front Vet Sci 2022; 9:946148. [PMID: 35928108 PMCID: PMC9343761 DOI: 10.3389/fvets.2022.946148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 06/21/2022] [Indexed: 11/13/2022] Open
Abstract
Lysoforte (LFT) plays a vital role in maintaining broilers' health and intestinal morphology. However, the mechanism behind the effects of LFT improving intestinal morphology and health is still unclear. Therefore, this study was implemented to explore the central genes linked to the regulatory effect of LFT. Seventy-five newly hatched Cobb 500 male broilers were randomly divided into three groups: control, LFT500, and LFT1000 groups, with 25 chicks per group. The control chicks were provided with the basal diet, and the birds in LFT500 and LFT1000 groups were offered the same basal diet with 500 g/ton and 1,000 g/ton LFT, respectively. GSE94622 dataset consisted of the control and two LFT-treated groups (LFT500 and LFT1000). Jejuna samples were obtained from Gene Expression Omnibus (GEO). Totally 106–344 DEGs were obtained by comparing LFT500 and LFT1000 vs. control and LFT1000 vs. LFT500. Gene ontology (GO) enrichment suggested that the DEGs are mainly related to the phosphatidylethanolamine biosynthetic process and neuron projection extension. KEGG analysis suggested the DEGs were enriched in AGE-RAGE, fatty acid elongation, ECM-receptor interaction (ECMRI), glycerophospholipid metabolism, focal adhesion, unsaturated fatty acids biosynthesis, and ABC transporters. Moreover, 29 genes, such as REG4, GJB1, KAT2A, APOA5, SERPINE2, ELOVL1, ABCC2, ANKRD9, CYP4V2, and PISD, might be closely related to promoting jejuna morphology in broilers. Taken together, our observation enhances the understanding of LFT in maintaining intestinal architecture and the general health of broiler chickens.
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Affiliation(s)
- Xiaofeng Li
- College of Animal Science, Anhui Science and Technology University, Fengyang, China
| | - Xiaoli Shi
- College of Animal Science, Guizhou University, Guiyang, China
| | - Noura M. Mesalam
- Biological Applications Department, Nuclear Research Center, Egyptian Atomic Energy Authority, Abu-Zaabal, Egypt
| | - Lei Liu
- Center of Reproductive Medicine, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Zhihao Chen
- College of Animal Science, Anhui Science and Technology University, Fengyang, China
| | - Bing Yang
- College of Animal Science, Anhui Science and Technology University, Fengyang, China
- *Correspondence: Bing Yang
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Salukhov VV, Lopatin YR, Minakov AA. Adipsin – summing up large-scale results: A review. CONSILIUM MEDICUM 2022. [DOI: 10.26442/20751753.2022.5.201280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Adipsin is one of the first discovered adipokines hormones produced by adipose tissue. Adipsin performs the function of a regulator of carbohydrate and lipid metabolism and participates in the adaptation of metabolism to the real needs of the body, being a powerful stimulant of anabolic processes. A characteristic feature of adipsin is that it is also a complement factor D, which is necessary for the normal functioning of an alternative pathway of activation of the complement system. Due to this, adipsin is represented in the body as a link between the energy block of the endocrine system and the humoral block of the immune system. Adipsin is known as a regulator of the function of pancreatic beta cells, a stimulator of lipogenesis, a modulator of inflammation processes. Recently, there have been works indicating the effect of adipsin on the microbiota, as well as its role in non-alcoholic fatty liver disease. To date, there are a large number of publications describing the biochemical structure, functions of adipsin, mechanisms of regulation of its synthesis, as well as changes in the level of adipsin in various pathological conditions. Attempts are also described to pharmacologically influence adipsin in order to modulate its functions or use it as a biomarker for the diagnosis of diseases. However, there is currently no structured review that summarizes and systematizes all available information about this adipokine. This is exactly the task we set ourselves in this study. The paper contains the results of all available studies on adipsin. In some cases, they are contradictory in nature, which indicates the need for further research in detecting connections between the body's systems.
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16
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Wei J, Zhang C, Gao Y, Li Y, Zhang Q, Qi H, Jin M, Yang X, Su X, Zhang Y, Yang R. Gut Epithelial-derived CXCL9 Maintains Gut Homeostasis Through Preventing Overgrown E. coli. J Crohns Colitis 2022; 16:963-977. [PMID: 34964882 DOI: 10.1093/ecco-jcc/jjab234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 11/25/2021] [Accepted: 12/25/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Increased E. coli in the colon are related to the occurrence and development of multiple diseases. Chemokines are shown to possess potential antimicrobial activity, including against Gram-positive and -negative bacterial pathogens. We here investigated function[s] of chemokine CXCL9 expressed in the gut epithelial cells, and mechanism[s] of CXCL9 by which to kill E. coli. METHODS We generated CXCL9fl/flpvillin-creT mice [pvillin-cre positive mice] and their control CXCL9fl/flpvillin-crewmice [pvillin-cre negative mice], and then employed a dextran sulphate sodium [DSS]-mediated colitis model to determine the sensitivity of CXCL9fl/flpvillin-creT mice. We analysed the composition of the gut microbiota by using 16S ribosomal RNA [V3-V4 variable region] sequencing and shotgun metagenomic analyses. We generated E. coli ΔFtsX [FtsX-depleted E. coli] and E. coli ΔaceE [aceE-depleted E. coli] by using a bacterium red recombining system to investigate the mechanism[s] of CXCL9 by which to kill E. coli. RESULTS CXCL9 fl/flpvillin-creTmice were more sensitive to chemically induced colitis than their control littermates, CXCL9fl/flpvillin-crewmice. After DSS treatment, there were markedly increased gut E. coli [Escherichia-Shigella] in the colonic contents of CXCL9fl/flpvillin-creT mice as compared with control CXCL9fl/flpvillin-crew mice. The increased E. coli could promote colitis through NLRC4 and caspase 1/11-mediated IL-18, which was derived from gut epithelial cells. We finally demonstrated that CXCL9 expressed in gut epithelial cells could kill the overgrown E. coli. E. coli expressed Ftsx and PDHc subunits aceE. E.coliΔaceE but not E. coliΔFtsX were resistant to CXCL9-mediated killing. CONCLUSIONS Gut epithelial cells-derived CXCL9 can kill the expanded E. coli through aceE, to remain gut homeostasis.
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Affiliation(s)
- Jianmei Wei
- Translational Medicine Institute, Tianjin Union Medical Center of Nankai University, Tianjin,China.,Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Chunze Zhang
- Translational Medicine Institute, Tianjin Union Medical Center of Nankai University, Tianjin,China.,Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin,China
| | - Yunhuan Gao
- Translational Medicine Institute, Tianjin Union Medical Center of Nankai University, Tianjin,China.,Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Yuanyuan Li
- Translational Medicine Institute, Tianjin Union Medical Center of Nankai University, Tianjin,China.,Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Qianjing Zhang
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Houbao Qi
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Mengli Jin
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Xiaorong 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
| | - Yuan Zhang
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Rongcun Yang
- Translational Medicine Institute, Tianjin Union Medical Center of Nankai University, Tianjin,China.,Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China.,State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China.,Key Laboratory of Bioactive Materials Ministry of Education, Nankai University, Tianjin, China
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17
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Du C, Wang K, Zhao Y, Nan X, Chen R, Quan S, Xiong B. Supplementation with Milk-Derived Extracellular Vesicles Shapes the Gut Microbiota and Regulates the Transcriptomic Landscape in Experimental Colitis. Nutrients 2022; 14:nu14091808. [PMID: 35565775 PMCID: PMC9104790 DOI: 10.3390/nu14091808] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/19/2022] [Accepted: 04/21/2022] [Indexed: 12/22/2022] Open
Abstract
Harboring various proteins, lipids, and RNAs, the extracellular vesicles (EVs) in milk exert vital tissue-specific immune-protective functions in neonates via these bioactive cargos. This study aims to explore the anti-inflammatory effects of bovine milk-derived EVs on a dextran sulfate sodium (DSS)-induced colitis model and to determine the underlying molecular mechanisms. Sixty C57BL/6 mice were divided into the NC group (normal control), DSS group (DSS + PBS), DSS + LOW group (DSS + 1.5 × 108 p/g EVs), DSS + MID group (DSS + 1.5 × 109 p/g EVs), and DSS + HIG group (DSS + 1.0 × 1010 p/g EVs). Histopathological sections, the gut microbiota, and intestinal tissue RNA-Seq were used to comprehensively evaluate the beneficial functions in mitigating colitis. The morphology exhibited that the milk-derived EVs contributed to the integrity of the superficial epithelial structure in the intestine. Additionally, the concentrations of IL-6 and TNF-α in the colon tissues were significantly decreased in the EVs-treated mice. The abundances of the Dubosiella, Bifidobacterium, UCG-007, Lachnoclostridium, and Lachnospiraceae genera were increased in the gut after treatment with the milk-derived EVs. Additionally, the butyrate and acetate production were enriched in feces. In addition, 1659 genes were significantly down-regulated and 1981 genes were significantly up-regulated in the EVs-treated group. Meanwhile, 82 lncRNAs and 6 circRNAs were also differentially expressed. Overall, the milk-derived EVs could attenuate colitis through optimizing gut microbiota abundance and by manipulating intestinal gene expression, implying their application potential for colitis prevention.
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Affiliation(s)
- Chunmei Du
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (C.D.); (K.W.); (Y.Z.); (X.N.); (R.C.)
| | - Kun Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (C.D.); (K.W.); (Y.Z.); (X.N.); (R.C.)
| | - Yiguang Zhao
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (C.D.); (K.W.); (Y.Z.); (X.N.); (R.C.)
| | - Xuemei Nan
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (C.D.); (K.W.); (Y.Z.); (X.N.); (R.C.)
| | - Ruipeng Chen
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (C.D.); (K.W.); (Y.Z.); (X.N.); (R.C.)
| | - Suyu Quan
- College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300384, China
- Correspondence: (S.Q.); (B.X.); Tel.: +86-022-2378-1297 (S.Q.); +86-010-6281-6017 (B.X.)
| | - Benhai Xiong
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (C.D.); (K.W.); (Y.Z.); (X.N.); (R.C.)
- Correspondence: (S.Q.); (B.X.); Tel.: +86-022-2378-1297 (S.Q.); +86-010-6281-6017 (B.X.)
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Kelly J, Al-Rammahi M, Daly K, Flanagan PK, Urs A, Cohen MC, di Stefano G, Bijvelds MJC, Sheppard DN, de Jonge HR, Seidler UE, Shirazi-Beechey SP. Alterations of mucosa-attached microbiome and epithelial cell numbers in the cystic fibrosis small intestine with implications for intestinal disease. Sci Rep 2022; 12:6593. [PMID: 35449374 PMCID: PMC9023491 DOI: 10.1038/s41598-022-10328-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 04/04/2022] [Indexed: 02/07/2023] Open
Abstract
Cystic fibrosis (CF) is caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene. Defective CFTR leads to accumulation of dehydrated viscous mucus within the small intestine, luminal acidification and altered intestinal motility, resulting in blockage. These changes promote gut microbial dysbiosis, adversely influencing the normal proliferation and differentiation of intestinal epithelial cells. Using Illumina 16S rRNA gene sequencing and immunohistochemistry, we assessed changes in mucosa-attached microbiome and epithelial cell profile in the small intestine of CF mice and a CF patient compared to wild-type mice and non-CF humans. We found increased abundance of pro-inflammatory Escherichia and depletion of beneficial secondary bile-acid producing bacteria in the ileal mucosa-attached microbiome of CFTR-null mice. The ileal mucosa in a CF patient was dominated by a non-aeruginosa Pseudomonas species and lacked numerous beneficial anti-inflammatory and short-chain fatty acid-producing bacteria. In the ileum of both CF mice and a CF patient, the number of absorptive enterocytes, Paneth and glucagon-like peptide 1 and 2 secreting L-type enteroendocrine cells were decreased, whereas stem and goblet cell numbers were increased. These changes in mucosa-attached microbiome and epithelial cell profile suggest that microbiota-host interactions may contribute to intestinal CF disease development with implications for therapy.
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Affiliation(s)
- Jennifer Kelly
- Department of Infection Biology and Microbiomes, University of Liverpool, Crown Street, Liverpool, L69 7ZB, UK
| | - Miran Al-Rammahi
- Department of Infection Biology and Microbiomes, University of Liverpool, Crown Street, Liverpool, L69 7ZB, UK.,Department of Physiology, Biochemistry and Pharmacology, College of Veterinary Medicine, University of Al-Qadisiyah, Al Diwaniyah, 58002, Iraq
| | - Kristian Daly
- Department of Infection Biology and Microbiomes, University of Liverpool, Crown Street, Liverpool, L69 7ZB, UK
| | - Paul K Flanagan
- Arrowe Park University Teaching Hospital NHS Trust, Wirral, CH49 5PE, UK.,Gastrointestinal and Liver Services, Aintree University Hospital, Lower Lane, Liverpool, Merseyside, L9 7AL, UK
| | - Arun Urs
- Sheffield Children's Hospital NHS Trust, Western Bank, Sheffield, S10 2TH, UK
| | - Marta C Cohen
- Histopathology Department, Sheffield Children's Hospital NHS Trust, Western Bank, Sheffield, S10 2TH, UK
| | - Gabriella di Stefano
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, 30625, Hannover, Germany
| | - Marcel J C Bijvelds
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - David N Sheppard
- School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, BS8 1TD, UK
| | - Hugo R de Jonge
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Ursula E Seidler
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, 30625, Hannover, Germany
| | - Soraya P Shirazi-Beechey
- Department of Infection Biology and Microbiomes, University of Liverpool, Crown Street, Liverpool, L69 7ZB, UK.
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19
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Zhou Y, Feng Y, Cen R, Hou X, Yu H, Sun J, Zhou L, Ji Q, Zhao L, Wang Y, Li Q. San-Wu-Huang-Qin decoction attenuates tumorigenesis and mucosal barrier impairment in the AOM/DSS model by targeting gut microbiome. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 98:153966. [PMID: 35158238 DOI: 10.1016/j.phymed.2022.153966] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 01/07/2022] [Accepted: 01/25/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND A classic herbal formula San-Wu-Huang-Qin (SWHQ) decoction has been widely used in clinical practices to prevent and treat colorectal cancer (CRC) for years, but its anti-tumorigenic properties and the underlying mechanisms remain undetermined. PURPOSE The present study used a CRC mouse model to clarify whether and how SWHQ suppresses tumorigenesis. METHODS Different doses of SWHQ were gavaged to the AOM/DSS model mice to examine its anti-tumor efficacy in comparison with the positive control drug Aspirin. The underlying microbiota-driven anti-tumor action of SWHQ was proven with bacterial manipulations by fecal microbial transplantation (FMT) in vivo and anaerobic culturing in vitro. RESULTS SWHQ decoction dose-dependently reduced colonic tumor numbers/loads of AOM/DSS models and suppressed their disease activity index scores. SWHQ also recovered epithelial MUC2 secretion and colonic tight junction protein (ZO-1 and claudin1) expression in the mouse model. Such inhibitory impact on tumorigenesis and mucosal barrier impairment was found to be associated with modulation of gut dysbiosis, particularly for suppressing lipopolysaccharide (LPS) producers. The FMT experiment confirmed the substantial contribution of SWHQ-reshaped microbiota to anti-tumor function and mucosal barrier protection. Moreover, LPS-activated TLR4/NF-κB signaling and its downstream pro-inflammatory factors were significantly suppressed in the colon of SWHQ-treated models and SWHQ-reshaped microbiota recipients. CONCLUSIONS We demonstrated that the SWHQ effectively inhibited tumorigenesis and protect mucosal barrier in CRC at least partially by targeting gut microbiota. This study provides scientific basis for the clinical usage of SWHQ in CRC intervention and prevention.
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Affiliation(s)
- Yelu Zhou
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yuanyuan Feng
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Rong Cen
- Endoscopy center of Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Xinxin Hou
- Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Hao Yu
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jian Sun
- Laboratory Department of Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Lihong Zhou
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Qing Ji
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Ling Zhao
- Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Yan Wang
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Qi Li
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
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20
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Su X, Zhang M, Qi H, Gao Y, Yang Y, Yun H, Zhang Q, Yang X, Zhang Y, He J, Fan Y, Wang Y, Guo P, Zhang C, Yang R. Gut microbiota-derived metabolite 3-idoleacetic acid together with LPS induces IL-35 + B cell generation. MICROBIOME 2022; 10:13. [PMID: 35074011 PMCID: PMC8785567 DOI: 10.1186/s40168-021-01205-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 12/01/2021] [Indexed: 05/03/2023]
Abstract
BACKGROUND IL-35-producing Bregs and Treg cells critically regulate chronic illnesses worldwide via mechanisms related to disrupting the gut microbiota composition. However, whether the gut microbiota regulates these IL-35+ cells remains elusive. We herein investigated the regulatory effects of the gut microbiota on IL-35+ cells by using genetically modified mouse models of obesity. RESULTS We first found that gut Reg4 promoted resistance to high-fat diet-induced obesity. Using 16S rRNA sequencing combined with LC-MS (liquid chromatography-mass spectrometry)/MS, we demonstrated that gut Reg4 associated with bacteria such as Lactobacillus promoted the generation of IL-35+ B cells through 3-idoleacetic acid (IAA) in the presence of LPS. HuREG4IECtg mice fed a high-fat diet exhibited marked IL-35+ cell accumulation in not only their adipose tissues but also their colons, whereas decreased IL-35+ cell accumulation was observed in the adipose and colon tissues of Reg4 knockout (KO) mice. We also found that Reg4 mediated HFD-induced obesity resistance via IL-35. Lower levels of IAA were also detected in the peripheral blood of individuals with obesity compared with nonobese subjects. Mechanistically, IAA together with LPS mediated IL-35+ B cells through PXR and TLR4. KO of PXR or TLR4 impaired the generation of IL-35+ B cells. CONCLUSION Together, IAA and LPS induce the generation of IL-35+ B cells through PXR and TLR4. Video Abstract.
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Affiliation(s)
- Xiaomin Su
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, 300071, China
| | - Minying Zhang
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, 300071, China
| | - Houbao Qi
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, 300071, China
- Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Tianjin, China
| | - Yunhuan Gao
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, 300071, China
| | - Yazheng Yang
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, 300071, China
| | - Huan Yun
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, 300071, China
| | - Qianjing Zhang
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, 300071, China
| | - Xiaorong Yang
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, 300071, China
| | - Yuan Zhang
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, 300071, China
| | - Jiangshan He
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, 300071, China
| | - Yaqi Fan
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, 300071, China
| | - Yuxue Wang
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, 300071, China
| | - Pei Guo
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, 300071, China
| | - Chunze Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, 300121, China
| | - Rongcun Yang
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, 300071, China.
- Translational Medicine Institute, Affiliated Tianjin Union Medical Center of Nankai University, Tianjin, China.
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, China.
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21
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Functional Identification of Complement Factor D and Analysis of Its Expression during GCRV Infection in Grass Carp ( Ctenopharyngodon idella). Int J Mol Sci 2021; 22:ijms222112011. [PMID: 34769442 PMCID: PMC8584590 DOI: 10.3390/ijms222112011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/19/2021] [Accepted: 11/02/2021] [Indexed: 12/12/2022] Open
Abstract
Complement factor D (Df) is a serine protease well known for activating the alternative pathway (AP) in mammals by promoting the cleavage of complement component 3 (C3), thus becoming involved in innate defense. In teleost fish, however, the functional mechanisms of Df in the AP and against pathogen infection are far from clear. In the present study, we cloned and characterized the Df gene, CiDf, from grass carp (Ctenopharyngodon idella) and analyzed its function in promoting C3 cleavage and expression changes after grass carp reovirus (GCRV) infection. The open reading frame of CiDf was found to be 753 bp, encoding 250 amino acids with a molecular mass of 27.06 kDa. CiDf harbors a conserved Tryp_SPc domain, with three conserved residues representing the catalytic triad and three conserved binding sites in the substrate specificity pocket. Pairwise alignment showed that CiDf shares the highest identity (96%) and similarity (98%) with Df from Anabarilius grahami. Phylogenetic analysis indicated that CiDf and other fish Dfs formed a distinct evolutionary branch. Similar to most Dfs from other vertebrates, the CiDf gene structure is characterized by four introns and five exons. The incubation of recombinant CiDf protein with grass carp serum significantly increased the C3b content, demonstrating the conserved function of CiDf in the AP in promoting C3 cleavage, similar to Dfs in mammals. CiDf mRNA expression was widely detected in various tissues and levels were relatively higher in the liver, spleen, and intestine of grass carp. During GCRV infection over a 168-hour period, a high level of CiDf mRNA expression in the liver, spleen, and intestine was maintained at 144 and 168 h, suggesting AP activity at the late stage of GCRV infection. Collectively, the above results reveal the conserved structure and function of CiDf and its distinct expression patterns after GCRV infection, which provide a key basis for studying the roles of Df and AP during GCRV infection in the grass carp C. idella.
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22
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The Potential Role of REG Family Proteins in Inflammatory and Inflammation-Associated Diseases of the Gastrointestinal Tract. Int J Mol Sci 2021; 22:ijms22137196. [PMID: 34281249 PMCID: PMC8268738 DOI: 10.3390/ijms22137196] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/22/2021] [Accepted: 06/30/2021] [Indexed: 12/12/2022] Open
Abstract
Regenerating gene (REG) family proteins serve as multifunctional secretory molecules with trophic, antiapoptotic, anti-inflammatory, antimicrobial and probably immuno-regulatory effects. Since their discovery, accumulating evidence has clarified the potential roles of the REG family in the occurrence, progression and development of a wide range of inflammatory and inflammation-associated diseases of the gastrointestinal (GI) tract. However, significant gaps still exist due to the undefined nature of certain receptors, regulatory signaling pathways and possible interactions among distinct Reg members. In this narrative review, we first describe the structural features, distribution pattern and purported regulatory mechanisms of REG family proteins. Furthermore, we summarize the established and proposed roles of REG proteins in the pathogenesis of various inflammation-associated pathologies of the GI tract and the body as a whole, focusing particularly on carcinogenesis in the ulcerative colitis—colitic cancer sequence and gastric cancer. Finally, the clinical relevance of REG products in the context of diagnosis, treatment and prognostication are also discussed in detail. The current evidence suggests a need to better understanding the versatile roles of Reg family proteins in the pathogenesis of inflammatory-associated diseases, and their broadened future usage as therapeutic targets and prognostic biomarkers is anticipated.
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23
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Vaillant L, Oster P, McMillan B, Velin D. Gastric eosinophils are detrimental for Helicobacter pylori vaccine efficacy. Vaccine 2021; 39:3590-3601. [PMID: 34049736 DOI: 10.1016/j.vaccine.2021.05.034] [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: 01/05/2021] [Revised: 05/10/2021] [Accepted: 05/12/2021] [Indexed: 02/06/2023]
Abstract
Helicobacter pylori (Hp) colonizes the human gastric mucosa with a high worldwide prevalence. Currently, Hp can be eradicated by the use of antibiotics. Due to the increase of antibiotic resistance, new therapeutic strategies need to be devised: one such approach being prophylactic vaccination. Pre-clinical and clinical data showed that a urease-based vaccine is efficient in decreasing Hp infection through the mobilization of T helper (Th)-dependent immune effectors, including eosinophils. Preliminary data have shown that upon vaccination and subsequent Hp infection, eosinophils accumulate in the gastric mucosa, suggesting a possible implication of this granulocyte subset in the vaccine-induced reduction of Hp infection. In our study, we confirm that activated eosinophils, expressing CD63, CD40, MHCII and PD-L1 at their cell surface, infiltrate the gastric mucosa during vaccine-induced reduction of Hp infection. Strikingly, we provide evidence that bone marrow derived eosinophils efficiently kill Hp in vitro, suggesting that eosinophils may participate to the vaccine-induced reduction of Hp infection. However, conversely to our expectations, the absence of eosinophils does not decrease the efficacy of this Hp vaccine in vivo. Indeed, vaccinated mice that have been genetically ablated of the eosinophil lineage or that have received anti-Sialic acid-binding immunoglobulin-like lectin F eosinophil-depleting antibodies, display a lower Hp colonization when compared to their eosinophil sufficient counterparts. Although the vaccine induces similar urease-specific humoral and Th responses in both eosinophil sufficient and deficient mice, a decreased production of anti-inflammatory cytokines, such as IL-10, TGFβ, and calgranulin B, was specifically observed in eosinophil depleted mice. Taken together, our results suggest that gastric eosinophils maintain an anti-inflammatory environment, thus sustaining chronic Hp infection. Because eosinophils are one of the main immune effectors mobilized by Th2 responses, our study strongly suggests that the formulation of an Hp vaccine needs to include an adjuvant that preferentially primes Hp-specific Th1/Th17 responses.
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Affiliation(s)
- Laurie Vaillant
- Service of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Paul Oster
- Service of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Brynn McMillan
- Service of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Dominique Velin
- Service of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland.
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24
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Sikorski PM, Commodaro AG, Grigg ME. A Protective and Pathogenic Role for Complement During Acute Toxoplasma gondii Infection. Front Cell Infect Microbiol 2021; 11:634610. [PMID: 33692968 PMCID: PMC7937796 DOI: 10.3389/fcimb.2021.634610] [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: 11/28/2020] [Accepted: 01/06/2021] [Indexed: 11/13/2022] Open
Abstract
The infection competence of the protozoan pathogen Toxoplasma gondii is critically dependent on the parasite’s ability to inactivate the host complement system. Toxoplasma actively resists complement-mediated killing in non-immune serum by recruiting host-derived complement regulatory proteins C4BP and Factor H (FH) to the parasite surface to inactivate surface-bound C3 and limit formation of the C5b-9 membrane attack complex (MAC). While decreased complement activation on the parasite surface certainly protects Toxoplasma from immediate lysis, the biological effector functions of C3 split products C3b and C3a are maintained, which includes opsonization of the parasite for phagocytosis and potent immunomodulatory effects that promote pro-inflammatory responses and alters mucosal defenses during infection, respectively. In this review, we discuss how complement regulation by Toxoplasma controls parasite burden systemically but drives exacerbated immune responses locally in the gut of genetically susceptible C57BL/6J mice. In effect, Toxoplasma has evolved to strike a balance with the complement system, by inactivating complement to protect the parasite from immediate serum killing, it generates sufficient C3 catabolites that signal through their cognate receptors to stimulate protective immunity. This regulation ultimately controls tachyzoite proliferation and promotes host survival, parasite persistence, and transmissibility to new hosts.
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Affiliation(s)
- Patricia M Sikorski
- Molecular Parasitology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States.,Department of Microbiology and Immunology, Georgetown University Medical Center, Georgetown University, Washington, DC, United States
| | - Alessandra G Commodaro
- Molecular Parasitology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Michael E Grigg
- Molecular Parasitology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
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