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Deng Y, Song L, Huang J, Zhou W, Liu Y, Lu X, Zhao H, Liu D. Astragalus polysaccharides ameliorates experimental colitis by regulating memory B cells metabolism. Chem Biol Interact 2024; 394:110969. [PMID: 38522565 DOI: 10.1016/j.cbi.2024.110969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 03/17/2024] [Accepted: 03/19/2024] [Indexed: 03/26/2024]
Abstract
It is well-established that the reduced Memory B cells (MBCs) play an important role in the pathogenesis of ulcerative colitis (UC), rendering them a potential therapeutic target for UC intervention. Astragalus polysaccharide (APS), a primary active constituent derived from the classic traditional Chinese medicine Astragalus membranaceus (AM), has been used for centuries in the treatment of UC in both human and animal subjects due to its renowned immunomodulatory properties. However, it is unknown whether APS can regulate MBCs to alleviate experimental colitis. In the present investigation, the murine colitis was successfully induced using dextran sulphate sodium (DSS) and subsequently treated with APS for a duration of 7 days. APS exhibited significant efficacy in reducing the disease activity index (DAI), colonic weight index, the index of colonic weight/colonic length. Furthermore, APS mitigated colonic pathological injuries, restored the colonic length, elevated the immunoglobulin A (IgA), transforming growth factor-β1 (TGF-β1) and interleukin (IL)-10 levels, while concurrently suppressing IgG, IgM, IL-6, tumor necrosis factor alpha (TNF-α) levels. Crucially, the quantities of MBCs, IgA+MBCs and forkhead box P3 (Foxp3+) MBCs were notably increased along with a concurrent decrease in IgG1+MBCs, IG2a+MBCs, IgG2b+MBCs after APS administration in colitis mice. Additionally, the Mitotracker red expressions of MBCs and their subgroups demonstrated a significantly up-regulation. Meanwhile, the transcriptomics analysis identified mitochondrial metabolism as the predominant and pivotal mechanism underlying APS-mediated mitigation of DSS-induced colitis. Key differentially expressed genes, including B-cell linker (BLNK), aldehyde dehydrogenase 1A1 (ALDH1A1), B-cell lymphoma 6 (BCL-6), B-lymphocyte-induced maturation protein 1 (Blimp-1), paired box gene 5 (PAX5), purinergic 2 × 7 receptor (P2X7R), B Cell activation factor (BAFF), B Cell activation factor receptor (BAFFR), CD40, nuclear factor kappa-B (NF-κB), IL-6 and so on were implicated in this process. These mRNA expressions were validated through quantitative polymerase chain reaction (qPCR) and immunohistochemistry. These findings revealed that APS effectively restored MBCs and their balance to ameliorate DSS-induced colitis, which was potentially realized via promoting mitochondrial metabolism to maintain MBCs activation.
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Affiliation(s)
- Yifei Deng
- Clinical Medical School, Jiangxi University of Chinese Medicine, Nanchang, 330004, Jiangxi Province, China
| | - Lizhao Song
- Department of Postgraduate, Jiangxi University of Chinese Medicine, Nanchang, 330004, Jiangxi Province, China
| | - Jiaqi Huang
- Department of Postgraduate, Jiangxi University of Chinese Medicine, Nanchang, 330004, Jiangxi Province, China
| | - Wen Zhou
- Nanchang Medical College, Nanchang, 330052, Jiangxi Province, China
| | - Yali Liu
- Nanchang Medical College, Nanchang, 330052, Jiangxi Province, China
| | - Xiuyun Lu
- Nanchang Medical College, Nanchang, 330052, Jiangxi Province, China.
| | - Haimei Zhao
- College of Traditional Chinese Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, Jiangxi Province, China; Formula-Pattern Research Center of Jiangxi University of Chinese Medicine, Nanchang, 330004, Jiangxi Province, China.
| | - Duanyong Liu
- Formula-Pattern Research Center of Jiangxi University of Chinese Medicine, Nanchang, 330004, Jiangxi Province, China; School of Nursing, Jiangxi University of Chinese Medicine, Nanchang, 330004, Jiangxi Province, China.
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2
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Tan L, Li X, Qin H, Zhang Q, Wang J, Chen T, Zhang C, Zhang X, Tan Y. Identified S100A9 as a target for diagnosis and treatment of ulcerative colitis by bioinformatics analysis. Sci Rep 2024; 14:5517. [PMID: 38448514 PMCID: PMC10917761 DOI: 10.1038/s41598-024-55944-3] [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: 10/23/2023] [Accepted: 02/29/2024] [Indexed: 03/08/2024] Open
Abstract
Ulcerative colitis (UC) is a chronic, recurrent inflammatory bowel disease. UC confronts with severe challenges including the unclear pathogenesis and lack of specific diagnostic markers, demanding for identifying predictive biomarkers for UC diagnosis and treatment. We perform immune infiltration and weighted gene co-expression network analysis on gene expression profiles of active UC, inactive UC, and normal controls to identify UC related immune cell and hub genes. Neutrophils, M1 macrophages, activated dendritic cells, and activated mast cells are significantly enriched in active UC. MMP-9, CHI3L1, CXCL9, CXCL10, CXCR2 and S100A9 are identified as hub genes in active UC. Specifically, S100A9 is significantly overexpressed in mice with colitis. The receiver operating characteristic curve demonstrates the excellent performance of S100A9 expression in diagnosing active UC. Inhibition of S100A9 expression reduces DSS-induced colonic inflammation. These identified biomarkers associated with activity in UC patients enlighten the new insights of UC diagnosis and treatment.
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Affiliation(s)
- Lulu Tan
- The First College of Clinical Medical Science, China Three Gorges University and Yichang Central People' Hospital, Yichang, 443000, China
| | - Xin Li
- Wuhan Asia Heart Hospital, Wuhan, 430022, China
| | - Hong Qin
- The First College of Clinical Medical Science, China Three Gorges University and Yichang Central People' Hospital, Yichang, 443000, China
| | - Qingqing Zhang
- Haiyan County Hospital of Traditional Chinese Medicine, Jiaxing, 314399, China
| | - Jinfeng Wang
- The First College of Clinical Medical Science, China Three Gorges University and Yichang Central People' Hospital, Yichang, 443000, China
| | - Tao Chen
- The First College of Clinical Medical Science, China Three Gorges University and Yichang Central People' Hospital, Yichang, 443000, China
| | - Chengwu Zhang
- The First College of Clinical Medical Science, China Three Gorges University and Yichang Central People' Hospital, Yichang, 443000, China
| | - Xiaoying Zhang
- The First College of Clinical Medical Science, China Three Gorges University and Yichang Central People' Hospital, Yichang, 443000, China.
| | - Yuyan Tan
- The First College of Clinical Medical Science, China Three Gorges University and Yichang Central People' Hospital, Yichang, 443000, China.
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Doherty J, O'Morain N, Stack R, Tosetto M, Inzitiari R, O'Reilly S, Gu L, Sheridan J, Cullen G, Mc Dermott E, Buckley M, Horgan G, Mulcahy H, Walshe M, Ryan EJ, Gautier V, Prostko J, Frias E, Daghfal D, Doran P, O'Morain C, Doherty GA. Reduced Serological Response to COVID-19 Booster Vaccine is Associated with Reduced B Cell Memory in Patients With Inflammatory Bowel Disease; VARIATION [VAriability in Response in IBD AgainsT SARS-COV-2 ImmunisatiON]. J Crohns Colitis 2023; 17:1445-1456. [PMID: 37018462 DOI: 10.1093/ecco-jcc/jjad065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Indexed: 04/07/2023]
Abstract
BACKGROUND AND AIMS Patients with inflammatory bowel disease [IBD] have an attenuated response to initial COVID-19 vaccination. We sought to characterize the impact of IBD and its treatment on responses after the third vaccine against SARS-CoV-2. METHODS This was a prospective multicentre observational study of patients with IBD [n = 202] and healthy controls [HC, n = 92]. Serological response to vaccination was assessed by quantification of anti-spike protein [SP] immunoglobulin [Ig]G levels [anti-SPIgG] and in vitro neutralization of binding to angiotensin-converting enzyme 2 [ACE2]. Peripheral blood B-cell phenotype populations were assessed by flow cytometry. SARS-CoV-2 antigen-specific B-cell responses were assessed in ex vivo culture. RESULTS Median anti-SP IgG post-third vaccination in our IBD cohort was significantly lower than HCs [7862 vs 19 622 AU/mL, p < 0.001] as was ACE2 binding inhibition [p < 0.001]. IBD patients previously infected with COVID-19 [30%] had similar quantitative antibody response as HCs previously infected with COVID-19 [p = 0.12]. Lowest anti-SP IgG titres and neutralization were seen in IBD patients on anti-tumour necrosis factor [anti-TNF] agents, without prior COVID-19 infection, but all IBD patients show an attenuated vaccine response compared to HCs. Patients with IBD have reduced memory B-cell populations and attenuated B-cell responses to SARS-CoV-2 antigens if not previously infected with COVID-19 [p = 0.01]. Higher anti-TNF drug levels and zinc levels <65 ng/ml were associated with significantly lower serological responses. CONCLUSIONS Patients with IBD have an attenuated response to three doses of SARS-CoV-2 vaccine. Physicians should consider patients with higher anti-TNF drug levels and/or zinc deficiency as potentially at higher risk of attenuated response to vaccination.
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Affiliation(s)
- Jayne Doherty
- Centre for Colorectal Disease, St Vincent's University Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
- INITIative IBD Research Network (www.initiativeibd.ie)
| | - Neil O'Morain
- Centre for Colorectal Disease, St Vincent's University Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
| | - Roisin Stack
- Centre for Colorectal Disease, St Vincent's University Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
| | - Miriam Tosetto
- School of Medicine, University College Dublin, Dublin, Ireland
| | | | - Sophie O'Reilly
- Centre for Experimental Pathogen Host Research, School of Medicine, University College Dublin, Ireland
| | - Lili Gu
- Centre for Experimental Pathogen Host Research, School of Medicine, University College Dublin, Ireland
| | - Juliette Sheridan
- Centre for Colorectal Disease, St Vincent's University Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
| | - Garret Cullen
- Centre for Colorectal Disease, St Vincent's University Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
- INITIative IBD Research Network (www.initiativeibd.ie)
| | - Edel Mc Dermott
- Centre for Colorectal Disease, St Vincent's University Hospital, Dublin, Ireland
| | - Maire Buckley
- Centre for Colorectal Disease, St Vincent's University Hospital, Dublin, Ireland
- St Michaels Hospital, Dun Laoghaire, Co Dublin, Ireland
| | - Gareth Horgan
- Centre for Colorectal Disease, St Vincent's University Hospital, Dublin, Ireland
- St Columcille's Hospital, Loughlinstown, Co Dublin, Ireland
| | - Hugh Mulcahy
- Centre for Colorectal Disease, St Vincent's University Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
| | - Margaret Walshe
- Centre for Colorectal Disease, St Vincent's University Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
- INITIative IBD Research Network (www.initiativeibd.ie)
| | - Elizabeth J Ryan
- Department of Biological Sciences, Health Research Institute, University of Limerick, Limerick, Ireland
| | - Virginie Gautier
- Centre for Experimental Pathogen Host Research, School of Medicine, University College Dublin, Ireland
| | - John Prostko
- Abbott Laboratories, Abbott Diagnostics, Lake Forest, IL 60045, USA
| | - Edwin Frias
- Abbott Laboratories, Abbott Diagnostics, Lake Forest, IL 60045, USA
| | - David Daghfal
- Abbott Laboratories, Abbott Diagnostics, Lake Forest, IL 60045, USA
| | - Peter Doran
- School of Medicine, University College Dublin, Dublin, Ireland
| | - Colm O'Morain
- Beacon Hospital, Sandyford, Co. Dublin and Trinity College Dublin, Ireland
- INITIative IBD Research Network (www.initiativeibd.ie)
| | - Glen A Doherty
- Centre for Colorectal Disease, St Vincent's University Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
- INITIative IBD Research Network (www.initiativeibd.ie)
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Long Y, Xia CS, Zeng X, Feng J, Ma Y, Liu C. Altered Phenotypes of Colonic and Peripheral Blood Follicular Helper and Follicular Cytotoxic T Cells in Mice with DSS-Induced Colitis. J Inflamm Res 2023; 16:2879-2892. [PMID: 37456782 PMCID: PMC10348340 DOI: 10.2147/jir.s411373] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/12/2023] [Indexed: 07/18/2023] Open
Abstract
Background Follicular helper T (Tfh), follicular regulatory T (Tfr), and follicular cytotoxic T (Tfc) cells play important roles in autoimmune diseases. Nevertheless, their changes of functional phenotypes in ulcerative colitis (UC), most importantly, their changes in colon tissue as the target-organ, have not been explored. Methods DSS-colitis was induced in Balb/c mice and lymphocytes were collected from spleen, mesenteric lymph nodes, peripheral blood and colon. Tfh, Tfr, and Tfc cells were analyzed using flow cytometry based on their CD4+CXCR5+FOXP3-Tfh, CD4+CXCR5+FOXP3+Tfr and CD8+CXCR5+Tfc expressions. Various functional characterization markers including CD44, CD62L, TIGIT, CD226, PD-1, ICOS, Helios, CTLA-4 and Bcl6 were analyzed in the T cell subsets of the organs. Results Tfh and Tfr cells in the colon were significantly increased in DSS-colitis mice. Additionally, the proportions of Tfr and Tfc cells in the peripheral blood were also increased, while Tfc cell proportions in the colon were decreased. The proportion of naïve cells in the Tfh, Tfr and Tfc cells in the colon and peripheral blood decreased, while the proportion of effector memory T cells increased. The TIGIT+CD226-Tfh and Tfc cells were upregulated in the colon of DSS-colitis mice. The PD-1+, ICOS+ and PD-1+ICOS+ Tfh cells were increased in both the colonic and peripheral blood Tfh and Tfc of DSS-colitis mice. The Bcl6+ proportions in the Tfh and Tfr were increased in the colon of DSS-colitis mice. Conclusion The colonic and peripheral blood Tfh and Tfc cells of DSS-colitis mice have a significantly activated T cell phenotype, which may play a significant role in the pathogenesis of UC.
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Affiliation(s)
- Yan Long
- Department of Clinical Laboratory, Peking University People’s Hospital, Beijing, People’s Republic of China
| | - Chang-Sheng Xia
- Department of Clinical Laboratory, Peking University People’s Hospital, Beijing, People’s Republic of China
| | - Xingyue Zeng
- Department of Clinical Laboratory, Peking University People’s Hospital, Beijing, People’s Republic of China
| | - Jinghong Feng
- Department of Clinical Laboratory, Peking University People’s Hospital, Beijing, People’s Republic of China
| | - Yinting Ma
- Department of Clinical Laboratory, Peking University People’s Hospital, Beijing, People’s Republic of China
| | - Chen Liu
- Department of Clinical Laboratory, Peking University People’s Hospital, Beijing, People’s Republic of China
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Hu W, Fang T, Zhou M, Chen X. Identification of hub genes and immune infiltration in ulcerative colitis using bioinformatics. Sci Rep 2023; 13:6039. [PMID: 37055495 PMCID: PMC10101977 DOI: 10.1038/s41598-023-33292-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 04/11/2023] [Indexed: 04/15/2023] Open
Abstract
Ulcerative colitis (UC) is a chronic inflammatory disease of the intestine, whose pathogenesis is not fully understood. Given that immune infiltration plays a key role in UC progression, our study aimed to assess the level of immune cells in UC intestinal mucosal tissues and identify potential immune-related genes. The GSE65114 UC dataset was downloaded from the Gene Expression Omnibus database. Differentially expressed genes (DEGs) between healthy and UC tissues were identified using the "limma" package in R, while their Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways were determined with the clusterProfiler package. Protein-protein interaction network analysis and visualization were performed with STRING and Cytoscape. Immune cell infiltration was calculated with CIBERSORT. The relationship between hub genes and immune-infiltrated cells in UC was determined by Pearson correlation. A total of 206 DEGs were identified, of which 174 were upregulated and 32 downregulated. GO and KEGG functional classification indicated DEG enrichment in immune response pathways, including Toll-like receptor signaling, IL-17 signaling, and immune system process and chemokine signaling. 13 hub genes were identified. Infiltration matrix analysis of immune cells showed abundant plasma cells, memory B cells, resting CD4 memory T cells, γδ T cells, M0 and M1 macrophages, and neutrophils in UC intestinal tissues. Correlation analysis revealed 13 hub genes associated with immune-infiltrated cells in UC. 13 hub genes associated with immune-infiltrated cells in UC were identified; they included CXCL13, CXCL10, CXCL9, CXCL8, CCL19, CTLA4, CCR1, CD69, CD163, IL7R, PECAM1, TLR8 and TLR2. These genes could potentially serve as markers for the diagnosis and treatment of UC.
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Affiliation(s)
- Weitao Hu
- Department of Rheumatology, The Second Affiliated Hospital of Fujian Medical University, 34 North Zhongshan Road, Licheng District, Quanzhou, 362000, Fujian, People's Republic of China
| | - Taiyong Fang
- Department of Gastroenterology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian, People's Republic of China
| | - Mingxuan Zhou
- Department of General Practice, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian, People's Republic of China
| | - Xiaoqing Chen
- Department of Rheumatology, The Second Affiliated Hospital of Fujian Medical University, 34 North Zhongshan Road, Licheng District, Quanzhou, 362000, Fujian, People's Republic of China.
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Liu L, Xu M, Lan R, Hu D, Li X, Qiao L, Zhang S, Lin X, Yang J, Ren Z, Xu J. Bacteroides vulgatus attenuates experimental mice colitis through modulating gut microbiota and immune responses. Front Immunol 2022; 13:1036196. [PMID: 36531989 PMCID: PMC9750758 DOI: 10.3389/fimmu.2022.1036196] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Accepted: 11/11/2022] [Indexed: 12/03/2022] Open
Abstract
Introduction Bacteroides vulgatus is one of the predominant Bacteroides species in the human gut and exerts a series of beneficial effects. The aim of this study was to investigate the protective role of B. vulgatus Bv46 in a dextran sodium sulfate (DSS) induced colitis mouse model. Methods Female C57BL/6J mice were given 3% DSS in drinking water to induce colitis and simultaneously treated with B. vulgatus Bv46 by gavage for 7 days. Daily weight and disease activity index (DAI) of mice were recorded, and the colon length and histological changes were evaluated. The effects of B. vulgatus Bv46 on gut microbiota composition, fecal short chain fatty acids (SCFAs) concentration, transcriptome of colon, colonic cytokine level and cytokine secretion of RAW 264·7 macrophage cell line activated by the lipopolysaccharide (LPS) were assessed. Results and Discussion B. vulgatus Bv46 significantly attenuated symptoms of DSS-induced colitis in mice, including reduced DAI, prevented colon shortening, and alleviated colon histopathological damage. B. vulgatus Bv46 modified the gut microbiota community of colitis mice and observably increased the abundance of Parabacteroides, Bacteroides, Anaerotignum and Alistipes at the genus level. In addition, B. vulgatus Bv46 treatment decreased the expression of colonic TNF-α, IL-1β and IL-6 in DSS-induced mouse colitis in vivo, reduced the secretion of TNF-α, IL-1β and IL-6 in macrophages stimulated by LPS in vitro, and downregulated the expression of Ccl19, Cd19, Cd22, Cd40 and Cxcr5 genes in mice colon, which mainly participate in the regulation of B cell responses. Furthermore, oral administration of B. vulgatus Bv46 notably increased the contents of fecal SCFAs, especially butyric acid and propionic acid, which may contribute to the anti-inflammatory effect of B. vulgatus Bv46. Supplementation with B. vulgatus Bv46 serves as a promising strategy for the prevention of colitis.
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Affiliation(s)
- Liyun Liu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, China
| | - Mingchao Xu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ruiting Lan
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Dalong Hu
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Xianping Li
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Lei Qiao
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Suping Zhang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xiaoying Lin
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jing Yang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, China
| | - Zhihong Ren
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, China
| | - Jianguo Xu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, China
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
- Institute of Public Health, Nankai University, Tianjin, China
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Zhang Z, Cai J, Hao S, Li C, Chen J, Li T, Feng X. Transcriptomic analysis of spleen B cell revealed the molecular basis of bursopentin on B cell differentiation. Vet Res 2022; 53:109. [PMID: 36517897 PMCID: PMC9753308 DOI: 10.1186/s13567-022-01123-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 08/30/2022] [Indexed: 12/23/2022] Open
Abstract
The bursa of Fabricius, the acknowledged humoral immune organ unique to birds, plays a vital role in B cell development. Bursopentin (BP5) derived from the bursa is reported to induce the development and formation of B cells. However, the mechanism of BP5 on B cell differentiation is still unclear. In this paper, total B lymphocytes from mice immunized with H9N2 subtype AIV vaccine were stimulated with BP5. The results show that BP5 at the experimental dosages promoted B cell differentiation, including the total B cells, activated B cells, differentiated B cells, mature B cells and plasma cells. Then, the in vivo immune experiment proved that the percentages of activated and differentiated B cells from mice immunized with AIV vaccine and 0.25 mg/mL BP5 were increased. To investigate the molecular mechanism of BP5 on B cell differentiation, the gene expression profiles of B cells purified from the spleen cells of mice immunized with AIV vaccine and BP5 were detected following RNA sequencing technology. The results show that BP5 at 0.05 and 0.25 mg/mL induced the enrichment of various biological functions, and stimulated five common significant enrichment pathways in B cells from the immunized mice. Additionally, 120 and 59 differentially expressed genes (DEG) represented transcriptional factors in B cells following 0.05 and 0.25 mg/mL BP5 immunization, respectively. In summary, these results suggest that BP5 regulates various gene expression involved in regulation of B cell development, which provides the knowledge required for additional studies on B cell differentiation in response to bursal-derived peptides and also provides an important experimental basis for improving vaccine immunity.
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Affiliation(s)
- Ze Zhang
- grid.27871.3b0000 0000 9750 7019Key Laboratory of Animal Microbiology of China’s Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China ,grid.27871.3b0000 0000 9750 7019MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Jiaxi Cai
- grid.27871.3b0000 0000 9750 7019Key Laboratory of Animal Microbiology of China’s Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China ,grid.27871.3b0000 0000 9750 7019MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Shanshan Hao
- grid.27871.3b0000 0000 9750 7019Key Laboratory of Animal Microbiology of China’s Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China ,grid.27871.3b0000 0000 9750 7019MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Chenfei Li
- grid.27871.3b0000 0000 9750 7019Key Laboratory of Animal Microbiology of China’s Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China ,grid.27871.3b0000 0000 9750 7019MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Jiajing Chen
- grid.27871.3b0000 0000 9750 7019Key Laboratory of Animal Microbiology of China’s Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China ,grid.27871.3b0000 0000 9750 7019MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Tongtong Li
- grid.27871.3b0000 0000 9750 7019Key Laboratory of Animal Microbiology of China’s Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China ,grid.27871.3b0000 0000 9750 7019MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Xiuli Feng
- grid.27871.3b0000 0000 9750 7019Key Laboratory of Animal Microbiology of China’s Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China ,grid.27871.3b0000 0000 9750 7019MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
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8
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The Role of T Follicular Helper Cells and Interleukin-21 in the Pathogenesis of Inflammatory Bowel Disease. Gastroenterol Res Pract 2021; 2021:9621738. [PMID: 34471409 PMCID: PMC8405314 DOI: 10.1155/2021/9621738] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 07/17/2021] [Accepted: 08/04/2021] [Indexed: 12/15/2022] Open
Abstract
T follicular helper (Tfh) cells represent a novel subset of CD4+ T cells which can provide critical help for germinal center (GC) formation and antibody production. The Tfh cells are characterized by the expression of CXC chemokine receptor 5 (CXCR5), programmed death 1 (PD-1), inducible costimulatory molecule (ICOS), B cell lymphoma 6 (BCL-6), and the secretion of interleukin-21 (IL-21). Given the important role of Tfh cells in B cell activation and high-affinity antibody production, Tfh cells are involved in the pathogenesis of many human diseases. Inflammatory bowel disease (IBD) is a group of chronic inflammatory diseases characterized by symptoms such as diarrhea, abdominal pain, and weight loss. Ulcerative colitis (UC) and Crohn's disease (CD) are the most studied types of IBD. Dysregulated mucosal immune response plays an important role in the pathogenesis of IBD. In recent years, many studies have identified the critical role of Tfh cells and IL-21 in the pathogenic process IBD. In this paper, we will discuss the role of Tfh cells and IL-21 in IBD pathogenesis.
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Xiu MX, Liu YM, Chen GY, Hu C, Kuang BH. Identifying Hub Genes, Key Pathways and Immune Cell Infiltration Characteristics in Pediatric and Adult Ulcerative Colitis by Integrated Bioinformatic Analysis. Dig Dis Sci 2021; 66:3002-3014. [PMID: 32974809 DOI: 10.1007/s10620-020-06611-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 09/10/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND AIMS In the present study, we investigated the differentially expressed genes (DEGs), pathways and immune cell infiltration characteristics of pediatric and adult ulcerative colitis (UC). METHODS We conducted DEG analysis using the microarray dataset GSE87473 containing 19 pediatric and 87 adult UC samples downloaded from the Gene Expression Omnibus. Gene ontology and pathway enrichment analyses were conducted using Metascape. We constructed the protein-protein interaction (PPI) network and the drug-target interaction network of DEGs and identified hub modules and genes using Cytoscape and analyzed immune cell infiltration in pediatric and adult UC using CIBERSORT. RESULTS In total, 1700 DEGs were screened from the dataset. These genes were enriched mainly in inter-cellular items relating to cell junctions, cell adhesion, actin cytoskeleton and transmembrane receptor signaling pathways and intra-cellular items relating to the splicing, metabolism and localization of RNA. CDC42, POLR2A, RAC1, PIK3R1, MAPK1 and SRC were identified as hub DEGs. Immune cell infiltration analysis revealed higher proportions of naive B cells, resting memory T helper cells, regulatory T cells, monocytes, M0 macrophages and activated mast cells in pediatric UC, along with lower proportions of memory B cells, follicular helper T cells, γδ T cells, M2 macrophages, and activated dendritic cells. CONCLUSIONS Our study suggested that hub genes CDC42, POLR2A, RAC1, PIK3R1, MAPK1 and SRC and immune cells including B cells, T cells, monocytes, macrophages and mast cells play vital roles in the pathological differences between pediatric and adult UC and may serve as potential biomarkers in the diagnosis and treatment of UC.
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Affiliation(s)
- Meng-Xi Xiu
- Medical School of Nanchang University, 603 Bayi Road, Nanchang, 330006, Jiangxi, China
| | - Yuan-Meng Liu
- Medical School of Nanchang University, 603 Bayi Road, Nanchang, 330006, Jiangxi, China
| | - Guang-Yuan Chen
- Medical School of Nanchang University, 603 Bayi Road, Nanchang, 330006, Jiangxi, China
| | - Cong Hu
- Medical School of Nanchang University, 603 Bayi Road, Nanchang, 330006, Jiangxi, China
| | - Bo-Hai Kuang
- Medical School of Nanchang University, 603 Bayi Road, Nanchang, 330006, Jiangxi, China.
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10
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Schnell A, Schwarz B, Wahlbuhl M, Allabauer I, Hess M, Weber S, Werner F, Schmidt H, Rechenauer T, Siebenlist G, Kaspar S, Ehrsam C, Rieger D, Rückel A, Metzler M, Christoph J, Woelfle J, Rascher W, Hoerning A. Distribution and Cytokine Profile of Peripheral B Cell Subsets Is Perturbed in Pediatric IBD and Partially Restored During a Successful IFX Therapy. Inflamm Bowel Dis 2021; 27:224-235. [PMID: 32185399 DOI: 10.1093/ibd/izaa054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND The role of B cells in inflammatory bowel disease (IBD) is ambiguous, as B cells may have both pathogenic and protective functions in IBD. We studied B cell subsets before and after initiation of an anti-tumor necrosis factor alpha (anti-TNFα) therapy in pediatric IBD. The aim of the study was to examine the behavior of B cells in pediatric IBD patients undergoing an anti-TNFα therapy and, more specifically, to clarify their association with a successful or an unsuccessful infliximab (IFX) treatment. METHODS A total of N = 42 pediatric IBD patients (Crohn disease, n = 30; ulcerative colitis, n = 12) for whom an anti-TNFα therapy with and without a concomitant azathioprine (AZA) medication was administered were recruited. Fourteen healthy age-matched children served as control patients. Blood samples were collected before initiation of the anti-TNFα therapy, before the fourth infusion at the end of the induction phase, and after 6 and 12 months under therapy maintenance. Flow cytometry (CD20, CD27, CD38, CD138) and intracellular staining (interleukin 10 [IL10], TNFα, granzyme B) were performed. Responders to successful IFX therapy were classified exhibiting a fecal calprotectin level of below 100 µg/g or achieving levels of <10% of the baseline value at initiation than at the end of the 12-month follow-up period. RESULTS Before initiation of anti-TNFα therapy, flow cytometry revealed increased percentages of naïve B cells whereas transitional B cells were reduced compared with those in the healthy control patients. The IL10-producing B cells of both ulcerative colitis and Crohn disease patients were reduced at the initiation of IFX therapy, whereas TNFα-producing transitional CD24hiCD38hi B cells in ulcerative colitis patients were increased compared with those in healthy control patients. After 12 months of therapy, we detected a significant increase of IL10-producing transitional B cells in responding patients.The IFX trough levels in the responding patients showed a significant increase until 6 months after IFX initiation, attaining mean values of 9.9 µg/mL, whereas the IFX dosage was significantly lower than that in the nonresponding patients. The IFX trough levels in AZA-treated patients reached earlier therapeutic levels than in patients without AZA comedication, whereas during the course of the IFX therapy, comedication with AZA had no significant effect on the outcome. CONCLUSIONS Attaining a normalization of IL10 production among CD24hiCD38hi B cells after 12 months of therapy may represent additional information about the reconstitution of a patient's immune system in responding patients. The achievement of an IFX trough level of ~10 µg/mL at 6 months of treatment is associated with a successful anti-TNFα therapy. In addition, AZA comedication supports an earlier achievement of therapeutic IFX trough levels.
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Affiliation(s)
- Alexander Schnell
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Benedikt Schwarz
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Mandy Wahlbuhl
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Ida Allabauer
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Merlin Hess
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Sabine Weber
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Felix Werner
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Hannah Schmidt
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Tobias Rechenauer
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Gregor Siebenlist
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Sonja Kaspar
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Christoph Ehrsam
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Daniel Rieger
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Aline Rückel
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Markus Metzler
- Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Jan Christoph
- Chair of Medical Informatics, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Joachim Woelfle
- §Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Wolfgang Rascher
- §Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - André Hoerning
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
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11
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Stanwyck LK, Chan W, Sood A, Susarla G, Romano J, Pefkianaki M, Jayasundera KT, Heckenlively JR, Lundy SK, Sobrin L. Correlation of Immunological Markers with Disease and Clinical Outcome Measures in Patients with Autoimmune Retinopathy. Transl Vis Sci Technol 2020; 9:15. [PMID: 32832222 PMCID: PMC7414616 DOI: 10.1167/tvst.9.7.15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 03/09/2020] [Indexed: 12/16/2022] Open
Abstract
Purpose To determine if immunological markers (1) are significantly different between autoimmune retinopathy (AIR) patients and controls and (2) correlate with disease progression in AIR patients. Methods We enrolled patients with a possible AIR diagnosis, as well as control participants without eye disease, autoimmunity, or cancer. Immunological markers were tested in all participants. In addition, AIR patients had up to three blood draws for testing over their disease course. For AIR patients, clinical measures, including visual acuity (VA) and Goldmann visual field (GVF) area, were recorded at each draw. We used the Mann-Whitney U test to compare the immunological markers between AIR patients and controls. We used multilevel mixed-effect regression to investigate the correlation between markers and clinical parameters over time in AIR patients. Results Seventeen patients with AIR and 14 controls were included. AIR patients had a higher percent of monocytes (Z = 3.076, P = 0.002). An increase in immunoglobulin G against recoverin was correlated with a VA decrease (β = 0.0044, P < 0.0001). An increase in monocyte proportion was correlated with a decrease in GVF area (β = -7.27, P = 0.0021). Several markers of B-cell depletion were correlated with GVF improvement. Conclusions Monocytes may play a role in AIR pathophysiology and be a disease activity marker. B-cell depletion markers correlated with clinical parameter improvement, particularly GVF. Translational Relevance This work elucidates immunologic markers that may improve the accuracy of diagnosis and treatment of AIR.
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Affiliation(s)
- Lynn K Stanwyck
- Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston, MA, USA
| | - Weilin Chan
- Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston, MA, USA
| | - Arjun Sood
- Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston, MA, USA
| | - Gayatri Susarla
- Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston, MA, USA
| | - John Romano
- Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston, MA, USA
| | - Maria Pefkianaki
- Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston, MA, USA
| | - Kanishka Thiran Jayasundera
- Department of Ophthalmology and Visual Sciences, Kellogg Eye Center, University of Michigan, Ann Arbor, MI, USA
| | - John R Heckenlively
- Department of Ophthalmology and Visual Sciences, Kellogg Eye Center, University of Michigan, Ann Arbor, MI, USA
| | - Steven K Lundy
- Department of Internal Medicine-Rheumatology, University of Michigan Medical School, Ann Arbor, MI, USA.,Graduate Program in Immunology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Lucia Sobrin
- Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston, MA, USA
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12
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Tyler CJ, Guzman M, Lundborg LR, Yeasmin S, Perez-Jeldres T, Yarur A, Behm B, Dulai PS, Patel D, Bamias G, Rivera-Nieves J. Inherent Immune Cell Variation Within Colonic Segments Presents Challenges for Clinical Trial Design. J Crohns Colitis 2020; 14:1364-1377. [PMID: 32239151 PMCID: PMC7533898 DOI: 10.1093/ecco-jcc/jjaa067] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND AIMS Intestinal biopsy sampling during IBD trials represents a valuable adjunct strategy for understanding drug responses at the tissue level. Given the length and distinctive embryonic origins of the proximal and distal colon, we investigated whether inherent regional differences of immune cell composition could introduce confounders when sampling different disease stages, or pre/post drug administration. Here, we capitalise on novel mass cytometry technology to perform deep immunophenotyping of distinct healthy colonic segments, using the limited numbers of biopsies that can be harvested from patients. METHODS Biopsies [2.8 mm] were collected from the caecum, transverse colon, descending colon, and rectum of normal volunteers. Intestinal leukocytes were isolated, stained with a panel of 37 antibodies, and mass cytometry data acquired. RESULTS Site-specific patterns of leukocyte localisation were observed. The proximal colon featured increased CD8+ T cells [particularly resident memory], monocytes, and CD19+ B cells. Conversely, the distal colon and rectum tissues exhibited enrichment for CD4+ T cells and antibody-secreting cells. The transverse colon displayed increased abundance of both γδ T cells and NK cells. Subsets of leukocyte lineages also displayed gradients of expression along the colon length. CONCLUSIONS Our results show an inherent regional immune cell variation within colonic segments, indicating that regional mucosal signatures must be considered when assessing disease stages or the prospective effects of trial drugs on leukocyte subsets. Precise protocols for intestinal sampling must be implemented to allow for the proper interpretation of potential differences observed within leukocyte lineages present in the colonic lamina propria.
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Affiliation(s)
- Christopher J Tyler
- Inflammatory Bowel Disease Center, Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA,San Diego VA Medical Center, San Diego, CA, USA
| | - Mauricio Guzman
- Inflammatory Bowel Disease Center, Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA,San Diego VA Medical Center, San Diego, CA, USA
| | - Luke R Lundborg
- Inflammatory Bowel Disease Center, Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA,San Diego VA Medical Center, San Diego, CA, USA
| | - Shaila Yeasmin
- Inflammatory Bowel Disease Center, Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA,San Diego VA Medical Center, San Diego, CA, USA
| | - Tamara Perez-Jeldres
- Universidad Católica de Chile, Santiago, Chile,Hospital San Borja Arriarán, Santiago, Chile
| | - Andres Yarur
- Division of Gastroenterology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Brian Behm
- Division of Gastroenterology, University of Virginia, Charlottesville, VI, USA
| | | | - Derek Patel
- San Diego VA Medical Center, San Diego, CA, USA
| | - Giorgos Bamias
- GI Unit, 3rd Academic Department of Internal Medicine, National and Kapodistrian University of Athens, Sotiria Hospital, Athens, Greece
| | - Jesús Rivera-Nieves
- Inflammatory Bowel Disease Center, Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA,San Diego VA Medical Center, San Diego, CA, USA,Corresponding author: Jesús Rivera-Nieves, MD, Inflammatory Bowel Disease Center, Division of Gastroenterology, University of California San Diego, 9500 Gilman Drive Bldg. BRF-II Rm. 4A32, San Diego, CA 92093-0063. Tel.: 858.534.5495; fax: 858.246.1788;
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13
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Long Y, Xia C, Xu L, Liu C, Fan C, Bao H, Zhao X, Liu C. The Imbalance of Circulating Follicular Helper T Cells and Follicular Regulatory T Cells Is Associated With Disease Activity in Patients With Ulcerative Colitis. Front Immunol 2020; 11:104. [PMID: 32117258 PMCID: PMC7034313 DOI: 10.3389/fimmu.2020.00104] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 01/15/2020] [Indexed: 12/14/2022] Open
Abstract
Ulcerative colitis (UC) is a chronic inflammatory bowel disease affecting the colon and rectum, in which the abnormality of B cells is involved in both its pathogenesis and progression. Follicular helper T cells (TFH) play an important role in assisting the immune function of human B cells in germinal centers, and follicular regulatory T cells (TFR) have the function of inhibiting TFH and germinal center B cell responses. The significance of circulating TFH and TFR in ulcerative colitis (UC) remains unclear. We analyzed peripheral blood of active and stable remission UC patients and found that circulating TFR was significantly decreased while TFH was increased in active UC patients. As to TFH subsets, TFH2 was elevated while TFH17 was decreased in active UC, with IL-4/IL-17A secretion enhanced. Helios+ and CD45RA−FoxP3high TFR cells were decreased while CD226+ and CD45RA+FoxP3int TFR cells were increased in active UC patients. The levels of new memory B cells, plasmablasts and serum IgG were significantly increased in active UC patients, and were positively correlated with TFH and TFH2, and negatively correlated with TFR. Serum CRP and Mayo Clinic scores were positively correlated with TFH and TFH2 but negatively correlated with TFR. Serum IL-12 and IL-21 were up-regulated while IL-10 was down-regulated in active UC. To conclude, an imbalance of circulating TFH and TFR cells is associated with disease activity in UC patients. Our results suggest a new mechanism for TFH and TFR imbalance in the pathogenesis of UC, providing a new perspective for theoretical research and therapeutic strategies for UC.
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Affiliation(s)
- Yan Long
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China
| | - Changsheng Xia
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China
| | - Lijuan Xu
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China.,Department of Immunology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Caoyi Liu
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China
| | - Chunhong Fan
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China
| | - Huizhang Bao
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China
| | - Xiaotao Zhao
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China
| | - Chen Liu
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China
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14
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Xu M, Jiang Y, Wang J, Liu J, Liu C, Liu D, Yang S. Distinct variations of antibody secreting cells and memory B cells during the course of Kawasaki disease. BMC Immunol 2019; 20:16. [PMID: 31159728 PMCID: PMC6547606 DOI: 10.1186/s12865-019-0299-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 05/23/2019] [Indexed: 01/02/2023] Open
Abstract
Background Both antibody secreting cells (ASCs) and memory B cells are essential for the maintenance of humoral immunity. To date, limit studies have focused on the two populations in Kawasaki disease (KD). To address the status of humoral immunity during KD, our current concentration is on the variations of ASCs and memory B cells, as well as their subsets in both acute and remission stages of KD. Methods ASCs were defined as the population with high expressions of CD27 and CD38 among CD3-CD20- lymphocytes. Based on the expression of surface marker CD138 and intracellular marker IgG, ASCs were further divided into two subsets. Memory B cells were characterized by the expressions of IgD, CD27 and IgM, upon which memory B cells were further categorized into CD27 + IgD- (switched memory, Sm), CD27-IgD- (Double negative, DN) and CD27 + IgD + IgM+ (marginal zone, MZ) B cells. Collectively, six populations were analyzed using flow cytometry. The blood samples were collected from KD patients in different stages and healthy controls. Results In the acute stage, the percentages of ASCs, CD138+ ASCs, and IgG+ ASCs were significantly increased. In contrast, the percentages of memory B cells including Sm and MZ B cells were significantly decreased. Correlation analysis found ASCs positively correlated with the level of serum IgM, whereas MZ B cells not only positively correlated with the level of serum IgG, IgA, and IgM, but also positively correlated with the level of serum complement C3 and C4 and negatively correlated with the value of C-reactive protein (CRP). In the remission stage, the percentages of IgG+ ASCs and MZ B cells were significantly reduced, whereas other subsets presented heterogeneous variations. Conclusions Our study provided direct evidence that ASCs contributed to the pathogenesis of KD, and it was the first time to describe the variation of memory B cells in this disease. Among the subsets, only IgG+ ASCs presented a significant increase in the acute stage and decreased after IVIG administration, indicating the involvement of IgG+ ASCs in the inflammation of KD and also suggesting that IVIG played an inhibitory role in the expression of cytoplasmic IgG. Electronic supplementary material The online version of this article (10.1186/s12865-019-0299-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Meng Xu
- Department of Pediatric Rheumatology, Immunology, and Allergy, The First Hospital of Jilin University, Changchun, 130021, China
| | - Yanfang Jiang
- Genetic Diagnosis Center, The First Hospital of Jilin University, Changchun, 130021, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China
| | - Jinghua Wang
- Department of Pediatric Rheumatology, Immunology, and Allergy, The First Hospital of Jilin University, Changchun, 130021, China
| | - Jinxiang Liu
- Department of Pediatric Rheumatology, Immunology, and Allergy, The First Hospital of Jilin University, Changchun, 130021, China
| | - Congcong Liu
- Department of Pediatric Rheumatology, Immunology, and Allergy, The First Hospital of Jilin University, Changchun, 130021, China
| | - Deying Liu
- Department of Pediatric Rheumatology, Immunology, and Allergy, The First Hospital of Jilin University, Changchun, 130021, China.,Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Sirui Yang
- Department of Pediatric Rheumatology, Immunology, and Allergy, The First Hospital of Jilin University, Changchun, 130021, China.
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15
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Wang X, Hao GL, Wang BY, Gao CC, Wang YX, Li LS, Xu JD. Function and dysfunction of plasma cells in intestine. Cell Biosci 2019; 9:26. [PMID: 30911371 PMCID: PMC6417281 DOI: 10.1186/s13578-019-0288-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 03/01/2019] [Indexed: 12/23/2022] Open
Abstract
As the main player in humoral immunity, antibodies play indispensable roles in the body's immune system. Plasma cells (PCs), as antibody factories, are important contributors to humoral immunity. PCs, recognized by their unique marker CD138, are always discovered in the medullary cords of spleen and lymph nodes and in bone marrow and mucosal lymphoid tissue. This article will review the origin and differentiation of PCs, characteristics of short- and long-lived PCs, and the secretion of antibodies, such as IgA, IgM, and IgG. PCs play a crucial role in the maintenance of intestinal homeostasis using immunomodulation though complex mechanisms. Clearly, PCs play functional roles in maintaining intestinal health, but more details are needed to fully understand all the other effects of intestinal PCs.
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Affiliation(s)
- Xue Wang
- School of Basic Medical Sciences, Xuanwu Hospital, Beijing Capital Medical University, Beijing, 100069 China
| | - Gui-liang Hao
- School of Basic Medical Sciences, Xuanwu Hospital, Beijing Capital Medical University, Beijing, 100069 China
| | - Bo-ya Wang
- Peking University Health Science Center, Beijing, 100081 China
| | - Chen-chen Gao
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Capital Medical University, No. 10, Xitoutiao, Youanmenwai, Fengtai District, Beijing, 100069 China
| | - Yue-xiu Wang
- Department of Teaching Office, International School, Capital Medical University, Beijing, 100069 China
| | - Li-sheng Li
- Function Platform Center, School of Basic Medical Science, Capital Medical University, Beijing, 100069 China
| | - Jing-dong Xu
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Capital Medical University, No. 10, Xitoutiao, Youanmenwai, Fengtai District, Beijing, 100069 China
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16
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Xue G, Zhong Y, Hua L, Zhong M, Liu X, Chen X, Gao D, Zhou N. Aberrant alteration of follicular T helper cells in ulcerative colitis patients and its correlations with interleukin-21 and B cell subsets. Medicine (Baltimore) 2019; 98:e14757. [PMID: 30855475 PMCID: PMC6417626 DOI: 10.1097/md.0000000000014757] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Patients with ulcerative colitis (UC) are at increased risk of developing colitis-associated colon cancer. Accumulating evidence suggests that follicular T helper (TFH) cells play a crucial role in the pathogenic process of autoimmune diseases. However, little is known about the role of TFH cells in the development of UC. To investigate the role of TFH cells in the development of UC, the number of TFH cells, the level of interleukin-21 (IL-21), the numbers of B cell subsets, and clinical parameters were detected in peripheral blood from 31 UC patients and 29 healthy controls. TFH cells and the level of IL-21 were significantly higher in UC patients than in the healthy controls. A positive correlation between TFH and IL-21 cells was found in UC patients. Moreover, aberrant frequencies of different subsets of B cells were observed in UC patients, and a positive correlation was found between CD38CD19 B cells and TFH cells and between CD86CD19 B cells and TFH cells. A high number of TFH cells were positively associated with Mayo score, serum C-reaction protein (CRP) and serum IgG in UC patients. Our data indicate that TFH cells and IL-21 are involved in the pathogenesis of UC.
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Affiliation(s)
- Guohui Xue
- Department of Clinical Laboratory, Jiujiang No. 1 People's Hospital, Jiujiang
| | - Yao Zhong
- Department of Clinical Laboratory, The Second People's Hospital of Kunming, Kunming
| | - Lin Hua
- Department of Clinical Laboratory, Jiujiang No. 1 People's Hospital, Jiujiang
| | - Meijun Zhong
- Department of General Practice, The Second Affiliated Hospital of Nanchang University
| | - Xiaofeng Liu
- Department of Clinical Laboratory, Jiujiang No. 1 People's Hospital, Jiujiang
| | - Xueli Chen
- Department of Clinical Laboratory, Jiujiang No. 1 People's Hospital, Jiujiang
| | - Dian Gao
- Department of Pathogen Biology and Immunology, Medical College of Nanchang University, Nanchang, China
| | - Nanjin Zhou
- Jiangxi Academy of Medical Science, Nanchang
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17
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The shifted balance between circulating follicular regulatory T cells and follicular helper T cells in patients with ulcerative colitis. Clin Sci (Lond) 2017; 131:2933-2945. [PMID: 29109300 DOI: 10.1042/cs20171258] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 10/25/2017] [Accepted: 11/06/2017] [Indexed: 12/15/2022]
Abstract
B-cell immunity participates in the pathogenesis of ulcerative colitis (UC). The immune balance between follicular regulatory T (TFR) cells and follicular helper T (TFH) cells is important in regulating B-cell responses. However, the alteration of TFR/TFH balance in UC remains unclear. Peripheral blood from 25 UC patients and 15 healthy controls was examined for the frequencies of circulating TFR, TFH, and regulatory T (Treg) cells by flow cytometry. Levels of serum cytokines were measured using cytometric bead array (CBA). Disease activity was evaluated by the Mayo Clinic Score. Compared with controls, UC patients exhibited significant reductions in circulating Foxp3+CXCR5+ TFR cells, the subset interleukin (IL)-10+Foxp3+CXCR5+ cells, and Treg cells, but significant expansions in Foxp3-CXCR5+ TFH cells and IL-21+Foxp3-CXCR5+ cells. UC patients also had reduced levels of serum IL-10 and elevated levels of serum IL-21. The values of Mayo Clinic Score, C-reactive protein (CRP), or erythrocyte sedimentation rate (ESR) in UC patients were negatively correlated with circulating TFR cells, serum IL-10 level, and TFR/TFH ratio, while positively correlated with circulating TFH cells and serum IL-21 level. Alterations in circulating TFR and TFH cells shift the balance from immune tolerance to immune responsive state, contributing to dysregulated B-cell immunity and the pathogenesis of UC.
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Stansky E, Biancotto A, Dagur PK, Gangaputra S, Chaigne-Delalande B, Nussenblatt RB, Sen HN, McCoy JP. B Cell Anomalies in Autoimmune Retinopathy (AIR). Invest Ophthalmol Vis Sci 2017; 58:3600-3607. [PMID: 28715846 PMCID: PMC5516566 DOI: 10.1167/iovs.17-21704] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Purpose Autoimmune retinopathy (AIR) is a retinopathy associated with unexplained vision loss presumably linked to circulating antiretinal antibodies; currently, however, there are no standardized criteria regarding the diagnosis, treatment strategy, or pathogenesis of this disease. The importance of B-lymphocyte immunophenotyping in the classification of AIR is unknown. Methods We utilized 15-color multiparametric flow cytometry to identify aberrations in B cell subsets that may contribute to the pathophysiology of AIR. Luminex cytokine analysis was also performed on plasma samples from AIR patients. Results Significant differences in AIR patients compared to individuals with other inflammatory conditions or healthy donors were found in the B cell memory compartment, including an increase in naïve B cells and a decrease in switched and unswitched memory B cells, which correlated with alterations in immunoglobulin secretion. Conclusions These findings suggest that the maturation process of B cells may be impaired and that B cell immunophenotyping may help in understanding disease process in AIR.
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Affiliation(s)
- Elena Stansky
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - Angélique Biancotto
- Center for Human Immunology, National Institutes of Health, Bethesda, Maryland, United States
| | - Pradeep K Dagur
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - Sapna Gangaputra
- Laboratory of Immunology, National Eye Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - Benjamin Chaigne-Delalande
- Laboratory of Immunology, National Eye Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - Robert B Nussenblatt
- Laboratory of Immunology, National Eye Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - H Nida Sen
- Laboratory of Immunology, National Eye Institute, National Institutes of Health, Bethesda, Maryland, United States
| | - J Philip McCoy
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, United States
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