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Pattarabanjird T, Wilson JM, Erickson LD, Workman LJ, Qiao H, Ghosheh Y, Gulati R, Durant C, Vallejo J, Saigusa R, Platts-Mills TAE, Taylor AM, Ley K, McNamara CA. Chemokine Receptor Activation Enhances Memory B Cell Class Switching Linked to IgE Sensitization to Alpha Gal and Cardiovascular Disease. Front Cardiovasc Med 2022; 8:791028. [PMID: 35097011 PMCID: PMC8793803 DOI: 10.3389/fcvm.2021.791028] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 12/20/2021] [Indexed: 01/10/2023] Open
Abstract
Background: Recent studies have suggested that IgE sensitization to α-gal is associated with coronary artery disease (CAD). However, the B cell subtype(s) responsible for production of IgE to α-gal and mechanisms mediating this production remain elusive. Methods: Single cell multi-omics sequencing, was utilized to phenotype B cells obtained from 60 subjects that had undergone coronary angiography in whom serum IgE was evaluated by ImmunoCAP. Bioinformatics approaches were used to identify B cell subtype(s) and transcriptomic signatures associated with α-gal sensitization. In vitro characterization of chemokine/chemokine receptor pairs on switched memory B cells associated with IgE to α-gal was performed. Results: Of the 60 patients, 17 (28%) were positive for IgE to α-gal. CITESeq identified CCR6+ class-switched memory (SWM) B cells and CXCR4 expresssion on these CCR6+ SWM B cells as significantly associated with IgE sensitization to α-gal but not to other common allergens (peanut or inhalants). In vitro studies of enriched human B cells revealed significantly greater IgE on SWM B cells with high CCR6 and CXCR4 expression 10 days after cells were treated with IL-4 and CD40 to stimulate class switch recombination. Both CCL20 (CCR6 ligand) and CXCL12 (ligand for CXCR4) increased the expression of IgE on SWM B cells expressing their receptors. However, they appeared to have unique pathways mediating this effect as only CCL20 increased activation-induced cytidine deaminase (AID), while CXCL12 drove proliferation of CXCR4+ SWM B cells. Lastly, correlation analysis indicated an association between CAD severity and the frequency of both CCR6+ SWM and CXCR4+ SWM B cells. Conclusions: CCR6+ SWM B cells were identified as potential producers of IgE to α-gal in CAD patients. Additionally, our findings highlighted non-chemotaxis roles of CCL20/CCR6 and CXCL12/CXCR4 signaling in mediating IgE class switching and cell proliferation of SWM B cells respectively. Results may have important implications for a better understanding and better therapeutic approaches for subjects with IgE sensitization to α-gal.
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Affiliation(s)
- Tanyaporn Pattarabanjird
- Carter Immunology Center, University of Virginia, Charlottesville, VA, United States,Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States,Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States
| | - Jeffrey M. Wilson
- Division of Allergy and Immunology, Department of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Loren D. Erickson
- Carter Immunology Center, University of Virginia, Charlottesville, VA, United States,Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, VA, United States
| | - Lisa J. Workman
- Division of Allergy and Immunology, Department of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Hui Qiao
- Carter Immunology Center, University of Virginia, Charlottesville, VA, United States,Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, VA, United States
| | - Yanal Ghosheh
- La Jolla Institute of Immunology, La Jolla, CA, United States
| | - Rishab Gulati
- La Jolla Institute of Immunology, La Jolla, CA, United States
| | | | - Jenifer Vallejo
- La Jolla Institute of Immunology, La Jolla, CA, United States
| | - Ryosuke Saigusa
- La Jolla Institute of Immunology, La Jolla, CA, United States
| | - Thomas A. E. Platts-Mills
- Division of Allergy and Immunology, Department of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Angela M. Taylor
- Division of Cardiovascular Medicine, Department of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Klaus Ley
- La Jolla Institute of Immunology, La Jolla, CA, United States
| | - Coleen A. McNamara
- Carter Immunology Center, University of Virginia, Charlottesville, VA, United States,Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States,Division of Cardiovascular Medicine, Department of Medicine, University of Virginia, Charlottesville, VA, United States,*Correspondence: Coleen A. McNamara
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Wu J, Wang Y, Zhou Y, Wang Y, Sun X, Zhao Y, Guan Y, Zhang Y, Wang W. PPARγ as an E3 Ubiquitin-Ligase Impedes Phosphate-Stat6 Stability and Promotes Prostaglandins E 2-Mediated Inhibition of IgE Production in Asthma. Front Immunol 2020; 11:1224. [PMID: 32636842 PMCID: PMC7317005 DOI: 10.3389/fimmu.2020.01224] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 05/15/2020] [Indexed: 12/18/2022] Open
Abstract
Increased serum IgE level is one of the features of allergic asthma. It is reported that IgE production can be enhanced by E-prostanoid 2 (EP2) receptor of prostaglandin E2 (PGE2); however, whether E-prostanoid 4 (EP4) receptor (encoded by Ptger4) has a unique or redundant role is still unclear. Here, we demonstrated the mice with B cell-specific deletion of the EP4 receptor (Ptger4fl/flMb1cre+/−) showed their serum levels of IgE were markedly increased. A much more severe airway allergic inflammation was observed in the absence of EP4 signal using the OVA-induced asthma model. Mechanistic studies demonstrated that the transcription levels of AID, GLTε, and PSTε in EP4-deficient B cells were found to be significantly increased, implying an enhanced IgE class switch. In addition, we saw higher levels of phosphorylated STAT6, a vital factor for IgE class switch. Biochemical analyses indicated that inhibitory effect of EP4 signal on IgE depended on the activation of the PI3K-AKT pathway. Further downstream, PPARγ expression was up-regulated. Independent of its activity as a transcription factor, PPARγ here primarily functioned as an E3 ubiquitin-ligase, which bound the phosphorylated STAT6 to initiate its degradation. In support of PPARγ as a key mediator downstream of the EP4 signal, PPARγ agonist induced the down-regulation of phospho-STAT6, whereas its antagonist was able to rescue the EP4-mediated inhibition of STAT6 activation and IgE production. Thus, our findings highlight a role for the PGE2-EP4-AKT-PPARγ-STAT6 signaling in IgE response, highlighting the therapeutic potential of combined application of EP4 and PPARγ agonists in asthma.
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Affiliation(s)
- Jia Wu
- Department of Immunology, School of Basic Medical Sciences, Peking University, NHC Key Laboratory of Medical Immunology (Peking University), Beijing, China
| | - Yan Wang
- Department of Immunology, School of Basic Medical Sciences, Peking University, NHC Key Laboratory of Medical Immunology (Peking University), Beijing, China
| | - Yu Zhou
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yuqing Wang
- Center of Basic Medical Research, Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing, China
| | - Xiaowan Sun
- Department of Immunology, School of Basic Medical Sciences, Peking University, NHC Key Laboratory of Medical Immunology (Peking University), Beijing, China
| | - Ye Zhao
- Department of Immunology, School of Basic Medical Sciences, Peking University, NHC Key Laboratory of Medical Immunology (Peking University), Beijing, China
| | - Youfei Guan
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian, China
| | - Yu Zhang
- Department of Immunology, School of Basic Medical Sciences, Peking University, NHC Key Laboratory of Medical Immunology (Peking University), Beijing, China.,Institute of Biological Sciences, Jinzhou Medical University, Jinzhou, China
| | - Wei Wang
- Department of Immunology, School of Basic Medical Sciences, Peking University, NHC Key Laboratory of Medical Immunology (Peking University), Beijing, China
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Ramadani F, Bowen H, Upton N, Hobson PS, Chan YC, Chen JB, Chang TW, McDonnell JM, Sutton BJ, Fear DJ, Gould HJ. Ontogeny of human IgE-expressing B cells and plasma cells. Allergy 2017; 72:66-76. [PMID: 27061189 PMCID: PMC5107308 DOI: 10.1111/all.12911] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2016] [Indexed: 12/31/2022]
Abstract
Background IgE‐expressing (IgE+) plasma cells (PCs) provide a continuous source of allergen‐specific IgE that is central to allergic responses. The extreme sparsity of IgE+ cells in vivo has confined their study almost entirely to mouse models. Objective To characterize the development pathway of human IgE+PCs and to determine the ontogeny of human IgE+PCs. Methods To generate human IgE+ cells, we cultured tonsil B cells with IL‐4 and anti‐CD40. Using FACS and RT‐PCR, we examined the phenotype of generated IgE+ cells, the capacity of tonsil B‐cell subsets to generate IgE+PCs and the class switching pathways involved. Results We have identified three phenotypic stages of IgE+PC development pathway, namely (i) IgE+germinal centre (GC)‐like B cells, (ii) IgE+PC‐like ‘plasmablasts’ and (iii) IgE+PCs. The same phenotypic stages were also observed for IgG1+ cells. Total tonsil B cells give rise to IgE+PCs by direct and sequential switching, whereas the isolated GC B‐cell fraction, the main source of IgE+PCs, generates IgE+PCs by sequential switching. PC differentiation of IgE+ cells is accompanied by the down‐regulation of surface expression of the short form of membrane IgE (mIgES), which is homologous to mouse mIgE, and the up‐regulation of the long form of mIgE (mIgEL), which is associated with an enhanced B‐cell survival and expressed in humans, but not in mice. Conclusion Generation of IgE+PCs from tonsil GC B cells occurs mainly via sequential switching from IgG. The mIgEL/mIgES ratio may be implicated in survival of IgE+ B cells during PC differentiation and allergic disease.
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Affiliation(s)
- F. Ramadani
- Randall Division of Cell and Molecular Biohphysics; King's College; London UK
- Medical Research Council and Asthma UK Centre in Allergic Mechanisms in Asthma; London UK
| | - H. Bowen
- Randall Division of Cell and Molecular Biohphysics; King's College; London UK
- Medical Research Council and Asthma UK Centre in Allergic Mechanisms in Asthma; London UK
| | - N. Upton
- Randall Division of Cell and Molecular Biohphysics; King's College; London UK
- Medical Research Council and Asthma UK Centre in Allergic Mechanisms in Asthma; London UK
| | - P. S. Hobson
- Division of Asthma; Allergy and Lung Biology; King's College; London UK
- Medical Research Council and Asthma UK Centre in Allergic Mechanisms in Asthma; London UK
| | - Y.-C. Chan
- Randall Division of Cell and Molecular Biohphysics; King's College; London UK
- Medical Research Council and Asthma UK Centre in Allergic Mechanisms in Asthma; London UK
| | - J.-B. Chen
- Genomics Research Center; Academia Sinica; Taipei Taiwan
| | - T. W. Chang
- Genomics Research Center; Academia Sinica; Taipei Taiwan
| | - J. M. McDonnell
- Randall Division of Cell and Molecular Biohphysics; King's College; London UK
- Medical Research Council and Asthma UK Centre in Allergic Mechanisms in Asthma; London UK
| | - B. J. Sutton
- Randall Division of Cell and Molecular Biohphysics; King's College; London UK
- Medical Research Council and Asthma UK Centre in Allergic Mechanisms in Asthma; London UK
| | - D. J. Fear
- Division of Asthma; Allergy and Lung Biology; King's College; London UK
- Medical Research Council and Asthma UK Centre in Allergic Mechanisms in Asthma; London UK
| | - H. J. Gould
- Randall Division of Cell and Molecular Biohphysics; King's College; London UK
- Medical Research Council and Asthma UK Centre in Allergic Mechanisms in Asthma; London UK
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Ramadani F, Upton N, Hobson P, Chan YC, Mzinza D, Bowen H, Kerridge C, Sutton BJ, Fear DJ, Gould HJ. Intrinsic properties of germinal center-derived B cells promote their enhanced class switching to IgE. Allergy 2015; 70:1269-77. [PMID: 26109279 PMCID: PMC4744720 DOI: 10.1111/all.12679] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2015] [Indexed: 02/03/2023]
Abstract
Background Research on the origins and development of human IgE‐expressing (IgE+) cells is required for understanding the pathogenesis of allergy and asthma. These studies have been thwarted by the rarity of IgE+ cells in vivo and the low frequency of class switch recombination (CSR) to IgE ex vivo. To determine the main source of IgE+ cells, we investigated the relation between the phenotypic composition of tonsil B cells and the CSR to IgE ex vivo. Methods Human tonsil B cells were analyzed by flow cytometry (FACS) and cultured with IL‐4 and anti‐CD40 to induce CSR to IgE. Naïve, germinal center (GC), early GC (eGC), and memory tonsil B cells were isolated by FACS, and their capacities for IL‐4 and anti‐CD40 signaling, cell proliferation, and de novo class switching to IgE were analyzed by RT‐PCR and FACS. Results B cells from different tonsils exhibited varying capacities for CSR to IgE ex vivo. This was correlated with the percentage of eGC B cells in the tonsil at the outset of the culture. Despite relatively poor cell viability, eGC and GC B‐cell cultures produced the highest yields of IgE+ cells compared to naïve and memory B‐cell cultures. The main factors accounting for this result were the strength of IL‐4R and CD40 signaling and relative rates of cell proliferation. Conclusions This study shows that the maturation state of tonsil B cells determines their capacity to undergo class switching to IgE ex vivo, with the GC‐derived B cells yielding the highest percentage of IgE+ cells.
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Affiliation(s)
- F. Ramadani
- Randall Division of Cell and Molecular Biohphysics; King's College London; London UK
- Medical Research Council and Asthma UK Centre; Allergic Mechanisms in Asthma; London UK
| | - N. Upton
- Randall Division of Cell and Molecular Biohphysics; King's College London; London UK
- Medical Research Council and Asthma UK Centre; Allergic Mechanisms in Asthma; London UK
| | - P. Hobson
- Division of Asthma, Allergy and Lung Biology; King's College London; London UK
- Medical Research Council and Asthma UK Centre; Allergic Mechanisms in Asthma; London UK
| | - Y.-C. Chan
- Randall Division of Cell and Molecular Biohphysics; King's College London; London UK
- Medical Research Council and Asthma UK Centre; Allergic Mechanisms in Asthma; London UK
| | - D. Mzinza
- Randall Division of Cell and Molecular Biohphysics; King's College London; London UK
- Medical Research Council and Asthma UK Centre; Allergic Mechanisms in Asthma; London UK
| | - H. Bowen
- Randall Division of Cell and Molecular Biohphysics; King's College London; London UK
- Medical Research Council and Asthma UK Centre; Allergic Mechanisms in Asthma; London UK
| | - C. Kerridge
- Randall Division of Cell and Molecular Biohphysics; King's College London; London UK
- Medical Research Council and Asthma UK Centre; Allergic Mechanisms in Asthma; London UK
| | - B. J. Sutton
- Randall Division of Cell and Molecular Biohphysics; King's College London; London UK
- Medical Research Council and Asthma UK Centre; Allergic Mechanisms in Asthma; London UK
| | - D. J. Fear
- Division of Asthma, Allergy and Lung Biology; King's College London; London UK
- Medical Research Council and Asthma UK Centre; Allergic Mechanisms in Asthma; London UK
| | - H. J. Gould
- Randall Division of Cell and Molecular Biohphysics; King's College London; London UK
- Medical Research Council and Asthma UK Centre; Allergic Mechanisms in Asthma; London UK
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