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Goodwin E, Gibbs JS, Yewdell JW, Eisenlohr LC, Hensley SE. Influenza virus antibodies inhibit antigen-specific de novo B cell responses in mice. J Virol 2024; 98:e0076624. [PMID: 39194245 PMCID: PMC11406888 DOI: 10.1128/jvi.00766-24] [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: 05/01/2024] [Accepted: 07/26/2024] [Indexed: 08/29/2024] Open
Abstract
Antibody responses to influenza vaccines tend to be focused on epitopes encountered during prior influenza exposures, with little production of de novo responses to novel epitopes. To examine the contribution of circulating antibodies to this phenomenon, we passively transferred a hemagglutinin (HA)-specific monoclonal antibody (mAb) into mice before immunizing with whole inactivated virions. The HA mAb inhibited de novo HA-specific antibodies, plasmablasts, germinal center B cells, and memory B cells, while responses to a second antigen in the vaccine, neuraminidase (NA), were uninhibited. The HA mAb potently inhibited de novo antibody responses against epitopes near the HA mAb binding site. The HA mAb also promoted IgG1 class switching, an effect that, unlike the inhibition of HA responses, relied on signaling through Fc-gamma receptors. These studies suggest that circulating antibodies inhibit de novo B cell responses in an antigen-specific manner, which likely contributes to differences in antibody specificities elicited during primary and secondary influenza virus exposures.IMPORTANCEMost humans are exposed to influenza viruses in childhood and then subsequently exposed to antigenically drifted influenza variants later in life. It is unclear if antibodies elicited by earlier influenza virus exposures impact immunity against new influenza virus strains. Here, we used a mouse model to investigate how an anti-hemagglutinin (HA) monoclonal antibody (mAb) affects de novo B cell and antibody responses to the protein targeted by the monoclonal antibody (HA) and a second protein not targeted by the monoclonal antibody [neuraminidase (NA)]. Collectively, our studies suggest that circulating anti-influenza virus antibodies can potently modulate the magnitude and specificity of antibody responses elicited by secondary influenza virus exposures.
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Affiliation(s)
- Eileen Goodwin
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - James S Gibbs
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Jonathan W Yewdell
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Laurence C Eisenlohr
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Scott E Hensley
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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Goodwin E, Gibbs JS, Yewdell JW, Eisenlohr LC, Hensley SE. Influenza virus antibodies inhibit antigen-specific de novo B cell responses in mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.12.589218. [PMID: 38659819 PMCID: PMC11042189 DOI: 10.1101/2024.04.12.589218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Antibody responses to influenza vaccines tend to be focused on epitopes encountered during prior influenza exposures, with little production of de novo responses to novel epitopes. To examine the contribution of circulating antibody to this phenomenon, we passively transferred a hemagglutinin (HA)-specific monoclonal antibody (mAb) into mice before immunizing with whole inactivated virions. The HA mAb inhibited de novo HA-specific antibodies, plasmablasts, germinal center B cells, and memory B cells, while responses to a second antigen in the vaccine, neuraminidase (NA), were uninhibited. The HA mAb potently inhibited de novo antibody responses against epitopes near the HA mAb binding site. The HA mAb also promoted IgG1 class switching, an effect that, unlike the inhibition of HA responses, relied on signaling through Fc-gamma receptors. These studies suggest that circulating antibodies inhibit de novo B cell responses in an antigen-specific manner, which likely contributes to differences in antibody specificities elicited during primary and secondary influenza virus exposures.
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Affiliation(s)
- Eileen Goodwin
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - James S. Gibbs
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Jonathan W. Yewdell
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Laurence C. Eisenlohr
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Scott E. Hensley
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
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Nie W, Yao Y, Luo B, Zhu J, Li S, Yang X, Luo T, Liu W, Yan S. Systematic Analysis of the Expression and Prognosis of Fcγ Receptors in Clear Cell Renal Cell Carcinoma. Front Oncol 2022; 12:755936. [PMID: 35372055 PMCID: PMC8969749 DOI: 10.3389/fonc.2022.755936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 02/17/2022] [Indexed: 01/08/2023] Open
Abstract
Background Clear cell renal cell carcinoma (ccRCC) remains a common malignancy in the urinary system. Although dramatic progress was made in multimodal therapies, the improvement of its prognosis continues to be unsatisfactory. The antibody-binding crystallizable fragment (Fc) γ receptors (FcγRs) are expressed on the surface of leukocytes, to mediate antibody-induced cell-mediated anti-tumor responses when tumor-reactive antibodies are present. FcγRs have been studied extensively in immune cells, but rarely in cancer cells. Methods ONCOMINE, UALCAN, GEPIA, TIMER, TISIDB, Kaplan–Meier Plotter, SurvivalMeth, and STRING databases were utilized in this study. Results Transcriptional levels of FcγRs were upregulated in patients with ccRCC. There was a noticeable correlation between the over expressions of FCGR1A/B/C, FCGR2A, and clinical cancer stages/tumor grade in ccRCC patients. Besides, higher transcription levels of FcγRs were found to be associated with poor overall survival (OS) in ccRCC patients. Further, high DNA methylation levels of FcγRs were also observed in ccRCC patients, and higher DNA methylation levels of FcγRs were associated with shorter OS. Moreover, we also found that the expression of FcγRs was significantly correlated with immune infiltrates, namely, immune cells (NK, macrophages, Treg, cells) and immunoinhibitor (IL-10, TGFB1, and CTLA-4). Conclusions Our study demonstrated that high DNA methylation levels of FcγRs lead to their low mRNA, protein levels, and poor prognosis in ccRCC patients, which may provide new insights into the choice of immunotherapy targets and prognostic biomarkers.
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Wang J, Gao S, Zhang J, Li C, Li H, Lin J. Interleukin-22 attenuates allergic airway inflammation in ovalbumin-induced asthma mouse model. BMC Pulm Med 2021; 21:385. [PMID: 34836520 PMCID: PMC8620641 DOI: 10.1186/s12890-021-01698-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 10/11/2021] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Allergic asthma is a chronic airway inflammatory disease with a number of cytokines participating in its pathogenesis and progress. Interleukin (IL)-22, which is derived from lymphocytes, acts on epithelial cells and play a role in the chronic airway inflammation. However, the actual role of IL-22 in allergic asthma is still unclear. Therefore, we explored the effect of IL-22 on allergic airway inflammation and airway hyperresponsiveness (AHR) in an ovalbumin (OVA)-induced asthma mouse model. METHODS To evaluate the effect of IL-22 in an allergic asthma model, BALB/c mice were sensitized and challenged with OVA; then the recombinant mouse IL-22 was administered intranasally 24 h prior to each challenge. The IL-22 levels in lung homogenates and bronchoalveolar lavage fluid (BALF) were measured by enzyme linked immunosorbent assay, respectively. AHR was evaluated through indicators including airways resistance (Rrs), elastance (Ers) and compliance (Crs); the inflammatory cell infiltration was assessed by quantification of differential cells counts in BALF and lung tissues stained by hematoxylin and eosin (H&E); IL-22 specific receptors were determined by immunohistochemistry staining. RESULTS The concentration of IL-22 was significantly elevated in the OVA-induced mice compared with the control mice in lung homogenates and BALF. In the OVA-induced mouse model, IL-22 administration could significantly attenuate AHR, including Rrs, Ers and Crs, decrease the proportion of eosinophils in BALF and reduce inflammatory cell infiltration around bronchi and their concomitant vessels, compared with the OVA-induced group. In addition, the expression of IL-22RA1 and IL-10RB in the lung tissues of OVA-induced mice was significantly increased compared with the control mice, while it was dramatically decreased after the treatment with IL-22, but not completely attenuated in the IL-22-treated mice when compared with the control mice. CONCLUSION Interleukin-22 could play a protective role in an OVA-induced asthma model, by suppressing the inflammatory cell infiltration around bronchi and their concomitant vessels and airway hyperresponsiveness, which might associate with the expression of its heterodimer receptors. Thus, IL-22 administration might be an effective strategy to attenuate allergic airway inflammation.
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Affiliation(s)
- Jingru Wang
- Peking University China-Japan Friendship School of Clinical Medicine, No. 2, East Yinghua Road, Chaoyang Disteict, Beijing, 100029 China
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, 100029 China
| | - Shengnan Gao
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, 100029 China
- Department of Pulmonary and Critical Care Medicine, Graduate School of Chinese Academy of Medical Sciences, Peking Union Medical College, China-Japan Friendship Hospital, Beijing, 100730 China
| | - Jingyuan Zhang
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, 100029 China
- Department of Pulmonary and Critical Care Medicine, Graduate School of Chinese Academy of Medical Sciences, Peking Union Medical College, China-Japan Friendship Hospital, Beijing, 100730 China
| | - Chunxiao Li
- Peking University China-Japan Friendship School of Clinical Medicine, No. 2, East Yinghua Road, Chaoyang Disteict, Beijing, 100029 China
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, 100029 China
| | - Hongwen Li
- Peking University China-Japan Friendship School of Clinical Medicine, No. 2, East Yinghua Road, Chaoyang Disteict, Beijing, 100029 China
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, 100029 China
| | - Jiangtao Lin
- Peking University China-Japan Friendship School of Clinical Medicine, No. 2, East Yinghua Road, Chaoyang Disteict, Beijing, 100029 China
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, 100029 China
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Macri C, Morgan H, Villadangos JA, Mintern JD. Regulation of dendritic cell function by Fc-γ-receptors and the neonatal Fc receptor. Mol Immunol 2021; 139:193-201. [PMID: 34560415 DOI: 10.1016/j.molimm.2021.07.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 06/28/2021] [Accepted: 07/19/2021] [Indexed: 01/02/2023]
Abstract
Dendritic cells (DCs) express receptors to sense pathogens and/or tissue damage and to communicate with other immune cells. Among those receptors, Fc receptors (FcRs) are triggered by the Fc region of antibodies produced during adaptive immunity. In this review, the role of FcγR and neonatal Fc receptor (FcRn) in DC immunity will be discussed. Their expression in DC subsets and impact on antigen uptake and presentation, DC maturation and polarisation of T cell responses will be described. Lastly, we will discuss the importance of FcR-mediated DC function in the context of immunity during viral infection, inflammatory disease, cancer and immunotherapy.
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Affiliation(s)
- Christophe Macri
- Department of Biochemistry and Pharmacology, The University of Melbourne, Bio21 Molecular Science and Biotechnology Institute, 30 Flemington Rd, Parkville, Victoria, 3010, Australia
| | - Huw Morgan
- ACRF Translational Research Laboratory, The Royal Melbourne Hospital, Parkville, Melbourne, Victoria, 3050, Australia; Department of Medicine, University of Melbourne, Parkville, Melbourne, Victoria, 3010, Australia
| | - Jose A Villadangos
- Department of Biochemistry and Pharmacology, The University of Melbourne, Bio21 Molecular Science and Biotechnology Institute, 30 Flemington Rd, Parkville, Victoria, 3010, Australia; Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Parkville, Victoria, 3010, Australia.
| | - Justine D Mintern
- Department of Biochemistry and Pharmacology, The University of Melbourne, Bio21 Molecular Science and Biotechnology Institute, 30 Flemington Rd, Parkville, Victoria, 3010, Australia.
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Du X, Li F, Zhang C, Li N, Huang H, Shao Z, Zhang M, Zhan X, He Y, Ju Z, Li W, Chen Z, Ying S, Shen H. Eosinophil-derived chemokine (hCCL15/23, mCCL6) interacts with CCR1 to promote eosinophilic airway inflammation. Signal Transduct Target Ther 2021; 6:91. [PMID: 33640900 PMCID: PMC7914252 DOI: 10.1038/s41392-021-00482-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 11/18/2020] [Accepted: 12/21/2020] [Indexed: 01/21/2023] Open
Abstract
Eosinophils are terminally differentiated cells derived from hematopoietic stem cells (HSCs) in the bone marrow. Several studies have confirmed the effective roles of eosinophils in asthmatic airway pathogenesis. However, their regulatory functions have not been well elucidated. Here, increased C-C chemokine ligand 6 (CCL6) in asthmatic mice and the human orthologs CCL15 and CCL23 that are highly expressed in asthma patients are described, which are mainly derived from eosinophils. Using Ccl6 knockout mice, further studies revealed CCL6-dependent allergic airway inflammation and committed eosinophilia in the bone marrow following ovalbumin (OVA) challenge and identified a CCL6-CCR1 regulatory axis in hematopoietic stem cells (HSCs). Eosinophil differentiation and airway inflammation were remarkably decreased by the specific CCR1 antagonist BX471. Thus, the study identifies that the CCL6-CCR1 axis is involved in the crosstalk between eosinophils and HSCs during the development of allergic airway inflammation, which also reveals a potential therapeutic strategy for targeting G protein-coupled receptors (GPCRs) for future clinical treatment of asthma.
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Affiliation(s)
- Xufei Du
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China
| | - Fei Li
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China
| | - Chao Zhang
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China.,Department of Anatomy, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Na Li
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China
| | - Huaqiong Huang
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China
| | - Zhehua Shao
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China
| | - Min Zhang
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China
| | - Xueqin Zhan
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China
| | - Yicheng He
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China
| | - Zhenyu Ju
- Key Laboratory of Regenerative Medicine of Ministry of Education, Institute of Aging and Regenerative Medicine, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Wen Li
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China
| | - Zhihua Chen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China
| | - Songmin Ying
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China. .,International Institutes of Medicine, Zhejiang University School of Medicine, Yiwu, 322000, China. .,Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou, 310058, China.
| | - Huahao Shen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China. .,State Key Lab of Respiratory Disease, Guangzhou, 510120, China.
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He K, Hettinga A, Kale SL, Hu S, Xie MM, Dent AL, Ray A, Poholek AC. Blimp-1 is essential for allergen-induced asthma and Th2 cell development in the lung. J Exp Med 2021; 217:151760. [PMID: 32399548 PMCID: PMC7336314 DOI: 10.1084/jem.20190742] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 12/23/2019] [Accepted: 04/03/2020] [Indexed: 12/28/2022] Open
Abstract
A Th2 immune response is central to allergic airway inflammation, which afflicts millions worldwide. However, the mechanisms that augment GATA3 expression in an antigen-primed developing Th2 cell are not well understood. Here, we describe an unexpected role for Blimp-1, a transcriptional repressor that constrains autoimmunity, as an upstream promoter of GATA3 expression that is critical for Th2 cell development in the lung to inhaled but not systemically delivered allergens but is dispensable for TFH function and IgE production. Mechanistically, Blimp-1 acts through Bcl6, leading to increased GATA3 expression in lung Th2 cells. Surprisingly, the anti-inflammatory cytokine IL-10, but not the pro-inflammatory cytokines IL-6 or IL-21, is required via STAT3 activation to up-regulate Blimp-1 and promote Th2 cell development. These data reveal a hitherto unappreciated role for an IL-10–STAT3–Blimp-1 circuit as an initiator of an inflammatory Th2 response in the lung to allergens. Thus, Blimp-1 in a context-dependent fashion can drive inflammation by promoting rather than terminating effector T cell responses.
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Affiliation(s)
- Kun He
- Division of Pediatric Rheumatology, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA.,Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Angela Hettinga
- Division of Pediatric Rheumatology, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA.,Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Sagar Laxman Kale
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA.,Department of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Sanmei Hu
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA.,Department of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Markus M Xie
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN
| | - Alexander L Dent
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN
| | - Anuradha Ray
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA.,Department of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Amanda C Poholek
- Division of Pediatric Rheumatology, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA.,Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
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Antagonistic Peptides That Specifically Bind to the First and Second Extracellular Loops of CCR5 and Anti-IL-23p19 Antibody Reduce Airway Inflammation by Suppressing the IL-23/Th17 Signaling Pathway. Mediators Inflamm 2020; 2020:1719467. [PMID: 32410846 PMCID: PMC7204182 DOI: 10.1155/2020/1719467] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 03/21/2020] [Accepted: 04/07/2020] [Indexed: 02/07/2023] Open
Abstract
Asthma is a heterogeneous chronic inflammatory disorder of the airways with a complex etiology, which involves a variety of cells and cellular components. Therefore, the aim of the study was to investigate the effects and mechanisms of antagonistic peptides that specifically bind to the first and second extracellular loops of CCR5 (GH and HY peptides, respectively) and anti-interleukin-23 subunit p19 (anti-IL-23p19) in the airway and thereby mediate inflammation and the IL-23/T helper 17 (Th17) cell pathway in asthmatic mice. An experimental asthma model using BALB/c mice was induced by ovalbumin (OVA) and treated with peptides that are antagonistic to CCR5 or with anti-IL-23p19. The extents of the asthmatic inflammation and mucus production were assessed. In addition, bronchoalveolar lavage fluid (BALF) was collected, the cells were counted, and the IL-4 level was detected by ELISA. The IL-23/Th17 pathway-related protein and mRNA levels in the lung tissues were measured, and the positive production rates of Th17 cells in the thymus, spleen, and peripheral blood were detected. The groups treated with one of the two peptides and/or anti-IL-23p19 showed significant reductions in allergic inflammation and mucus secretion; decreased expression levels of IL-23p19, IL-23R, IL-17A and lactoferrin (LTF); and reduced proportions of Th17 cells in the thymus, spleen, and peripheral blood. Specifically, among the four treatment groups, the anti-IL-23p19 with HY peptide group exhibited the lowest positive production rate of Th17 cells. Our data also showed a significant and positive correlation between CCR5 and IL-23p19 protein expression. These findings suggest that the administration of peptides antagonistic to CCR5 and/or anti-IL-23p19 can reduce airway inflammation in asthmatic mice, most likely through inhibition of the IL-23/Th17 signaling pathway, and the HY peptide can alleviate inflammation not only through the IL-23/Th17 pathway but also through other mechanisms that result in the regulation of inflammation.
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Pei W, Zhang Y, Li X, Luo M, Chen T, Zhang M, Zhong M, Lv K. LncRNA AK085865 depletion ameliorates asthmatic airway inflammation by modulating macrophage polarization. Int Immunopharmacol 2020; 83:106450. [PMID: 32247269 DOI: 10.1016/j.intimp.2020.106450] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/12/2020] [Accepted: 03/25/2020] [Indexed: 01/19/2023]
Abstract
Accumulating evidence indicates that regulators of macrophages polarization may play a key role in the development of allergic asthma (AA). However, the exact role of long non-coding RNAs (lncRNAs) in regulating in macrophages polarization in the pathogenesis of dermatophagoides farinae protein 1(Der f1)-induced AA is not fully understood. The purpose of this study was to determine the function of lncRNA AK085865 in regulating macrophages in AA. Here we report that lncRNA AK085865 served as a critical regulator of macrophages polarization and reduced the pathological progress of asthmatic airway inflammation. In response to the challenge of Der f1, AK085865-/- mice displayed attenuated allergic airway inflammation, including decreased eosinophil in BALF and reduced production of IgE, which were associated with decreased mucous glands and goblet cell hyperplasia. In addition, Der f1-treated AK085865-/- mice show fewer M2 macrophages when compared with WT asthmatic mice. After adopting bone marrow-derived macrophages (BMDM, M0) from WT mice, Der f1-treated AK085865-/- mice also revealed a light inflammatory reactions. We further observed that the percentage of type II innate immune lymphoid cells (ILC2s) decreased in AK085865-/- asthmatic mice. Moreover, M2 macrophages helped promote the differentiation of ILC2s, probably through the exosomal pathway secreted by M2 macrophages. Taken together, these findings reveal that AK085865 depletion can ameliorate asthmatic airway inflammation by modulating macrophage polarization and M2 macrophages can promote the differentiation of innate lymphoid cells progenitor (ILCP) into ILC2s.
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Affiliation(s)
- Weiya Pei
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Central Laboratory, The First Affiliated Hospital of Wannan Medical College, Wuhu, PR China
| | - Yingying Zhang
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Department of Laboratory Medicine (Wannan Medical College), Wuhu, PR China
| | - Xueqin Li
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Central Laboratory, The First Affiliated Hospital of Wannan Medical College, Wuhu, PR China
| | - Mengsha Luo
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Central Laboratory, The First Affiliated Hospital of Wannan Medical College, Wuhu, PR China
| | - Tianbing Chen
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Central Laboratory, The First Affiliated Hospital of Wannan Medical College, Wuhu, PR China
| | - Mengying Zhang
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Central Laboratory, The First Affiliated Hospital of Wannan Medical College, Wuhu, PR China
| | - Min Zhong
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Central Laboratory, The First Affiliated Hospital of Wannan Medical College, Wuhu, PR China
| | - Kun Lv
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institutes (Wannan Medical College), Wuhu, PR China; Central Laboratory, The First Affiliated Hospital of Wannan Medical College, Wuhu, PR China.
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10
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Liang Y, Yu B, Chen J, Wu H, Xu Y, Yang B, Lu Q. Thymic stromal lymphopoietin epigenetically upregulates Fc receptor γ subunit-related receptors on antigen-presenting cells and induces T H2/T H17 polarization through dectin-2. J Allergy Clin Immunol 2019; 144:1025-1035.e7. [PMID: 31251950 DOI: 10.1016/j.jaci.2019.06.011] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 06/01/2019] [Accepted: 06/10/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Fc receptor γ subunit (FcRγ)-related receptors expressed on antigen-presenting cells (APCs) enhance allergen sensitization and allergic inflammation. DNA demethylation of the high-affinity IgE receptor γ subunit gene (FCER1G) leads to FcRγ and FcεRI overexpression on monocytes from patients with atopic dermatitis. OBJECTIVE We investigated epigenetic mechanisms underlying FCER1G demethylation and upregulation of FcRγ-related receptors on APCs and the consequent effect on allergic responses. METHODS Effects of thymic stromal lymphopoietin (TSLP) on expression of FcRγ and its related receptors and methylation or hydroxymethylation of FCER1G in human monocytes were assessed. Recruitment of ten-eleven translocation protein (TET) 2 to FCER1G by TSLP-activated phosphorylated signal transducer and activator of transcription 5 (pSTAT5) was evaluated. Effects of TSLP on expression of FcRγ-related receptors and costimulatory receptors on monocyte-derived dendritic cells (DCs) and the ability of DCs to take up ovalbumin were analyzed. TSLP-induced TH polarization and related cytokine production were also analyzed. RESULTS pSTAT5 activation by TSLP resulted in TET2 recruitment to FCER1G, leading to FCER1G demethylation and subsequent upregulation of FcRγ-related receptors on monocytes. TSLP not only stimulated monocyte-derived DC maturation but also maintained their allergen uptake ability, likely through maintenance and upregulation of FcRγ-related receptors. Allergen sensitization and upregulation of TH2/TH17-related cytokines contributed to TSLP-DC-induced TH2/TH17 polarization. The latter was attenuated on neutralization with a dectin-2 antibody. CONCLUSIONS TSLP mediated upregulation of FcRγ-related receptors on APCs through activation of pSTAT5, which recruited TET2 to induce FCER1G demethylation. TSLP-induced allergic TH2/TH17 polarization likely depends on dectin-2-mediated allergen sensitization and upregulation of TH2/TH17-related cytokines.
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Affiliation(s)
- Yunsheng Liang
- Department of Dermatology, Dermatology Hospital of Southern Medical University, Southern Medical University, Guangzhou, China.
| | - Bihui Yu
- Department of Dermatology, Dermatology Hospital of Southern Medical University, Southern Medical University, Guangzhou, China; Hunan Key Laboratory of Medical Epigenomics & Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Junchen Chen
- Department of Dermatology, Dermatology Hospital of Southern Medical University, Southern Medical University, Guangzhou, China
| | - Haijin Wu
- Hunan Key Laboratory of Medical Epigenomics & Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Yingping Xu
- Department of Dermatology, Dermatology Hospital of Southern Medical University, Southern Medical University, Guangzhou, China
| | - Bin Yang
- Department of Dermatology, Dermatology Hospital of Southern Medical University, Southern Medical University, Guangzhou, China.
| | - Qianjin Lu
- Hunan Key Laboratory of Medical Epigenomics & Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha, China.
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11
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Weng YH, Chen WY, Lin YL, Wang JY, Chang MS. Blocking IL-19 Signaling Ameliorates Allergen-Induced Airway Inflammation. Front Immunol 2019; 10:968. [PMID: 31114590 PMCID: PMC6503049 DOI: 10.3389/fimmu.2019.00968] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 04/15/2019] [Indexed: 11/21/2022] Open
Abstract
Asthma is a chronic inflammatory disease of the airway. Its major symptoms are reversible breathing problems causing airway narrowing and obstruction. IL-19 is a member of the IL-10 family cytokines. We previously showed that IL-19 induces T-helper 2 (Th2) cytokines and that asthma patients had higher serum IL-19 levels. To further examine whether inhibiting IL-19 and its receptor (IL-20R1) protected rodents against asthma, we used Dermatophagoides pteronyssinus (Der p; house dust mites) to induce chronic airway inflammation in wild-type C57BL/6 and IL-20R1-deficient mice and then analyzed the effect of the IL-20R1 deficiency on the pathogenesis of asthma. We also examined whether inhibiting IL-19 and IL-20R1 ameliorated Der p-induced chronic asthma. Der p induced IL-19 in lung airway epithelial cells, type 2 alveolar cells, and alveolar macrophages. An IL-20R1 deficiency abolished IL-19-induced Th2 cell differentiation in vitro. Th2 cytokine expression, immune cell infiltration in the bronchoalveolar lavage, airway hyperresponsiveness (AHR), and bronchial wall thickening were lower in Der p-challenged IL-20R1-deficient mice. Anti-IL-20R1 monoclonal antibody (mAb) 51D and IL-19 polyclonal antibody (pAb) both ameliorated Der p-induced AHR, lung immune cell infiltration, bronchial wall thickening, and Th2 cytokine expression. Moreover, we confirmed that anti-IL-19 mAb (1BB1) attenuated lung inflammation in a rat ovalbumin-induced asthma model. This is the first report to show that inhibition of IL-19 by targeting IL-19 or IL-20R1 protected rodents from allergic lung inflammation. Our study suggests that targeting IL-19 signaling might be a novel therapeutic strategy for treating allergic asthma.
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Affiliation(s)
- Yun-Han Weng
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Wei-Yu Chen
- Kaohsiung Chang Gung Memorial Hospital, Institute for Translational Research in Biomedicine, Kaohsiung, Taiwan
| | - Yen-Lin Lin
- Institute of Microbiology & Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Jiu-Yao Wang
- Institute of Microbiology & Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Department of Pediatrics, College of Medical, National Cheng Kung University, Tainan, Taiwan
| | - Ming-Shi Chang
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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12
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Acevedo OA, Díaz FE, Beals TE, Benavente FM, Soto JA, Escobar-Vera J, González PA, Kalergis AM. Contribution of Fcγ Receptor-Mediated Immunity to the Pathogenesis Caused by the Human Respiratory Syncytial Virus. Front Cell Infect Microbiol 2019; 9:75. [PMID: 30984626 PMCID: PMC6450440 DOI: 10.3389/fcimb.2019.00075] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 03/05/2019] [Indexed: 12/18/2022] Open
Abstract
The human Respiratory Syncytial Virus (hRSV) is the leading cause of severe acute lower respiratory tract infections (ALRTIs) in humans at all ages and is the main cause of hospitalization due to pneumonia, asthma, and bronchiolitis in infants. hRSV symptoms mainly develop due to an excessive host immune and inflammatory response in the respiratory tissue. hRSV infection during life is frequent and likely because of non-optimal immunological memory is developed against this virus. Vaccine development against this pathogen has been delayed after the detrimental effects produced in children by vaccination with a formalin-inactivated hRSV preparation (FI-hRSV), which caused enhanced disease upon natural viral infection. Since then, several studies have focused on understanding the mechanisms underlying such disease exacerbation. Along these lines, several studies have suggested that antibodies elicited by immunization with FI-hRSV show low neutralizing capacity and promote the formation of immune complexes containing hRSV (hRSV-ICs), which contribute to hRSV pathogenesis through the engagement of Fc gamma receptors (FcγRs) expressed on the surface of immune cells. Furthermore, a role for FcγRs is supported by studies evaluating the contribution of these molecules to hRSV-induced disease. These studies have shown that FcγRs can modulate viral clearance by the host and the inflammatory response triggered by hRSV infection. In addition, ICs can facilitate viral entry into host cells expressing FcγRs, thus extending hRSV infectivity. In this article, we discuss current knowledge relative to the contribution of hRSV-ICs and FcγRs to the pathogenesis caused by hRSV and their putative role in the exacerbation of the disease caused by this virus after FI-hRSV vaccination. A better understanding FcγRs involvement in the immune response against hRSV will contribute to the development of new prophylactic or therapeutic tools to promote virus clearance with limited inflammatory damage to the airways.
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Affiliation(s)
- Orlando A Acevedo
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Fabián E Díaz
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Tomas E Beals
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Felipe M Benavente
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jorge A Soto
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jorge Escobar-Vera
- Laboratorio de Genética, Departamento Biomédico, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, Chile
| | - Pablo A González
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alexis M Kalergis
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.,Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
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13
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Eosinophil-derived CCL-6 impairs hematopoietic stem cell homeostasis. Cell Res 2018; 28:323-335. [PMID: 29327730 PMCID: PMC5835778 DOI: 10.1038/cr.2018.2] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 10/06/2017] [Accepted: 10/23/2017] [Indexed: 12/13/2022] Open
Abstract
Eosinophils (Eos) have been long considered as end-stage effector cells in the hierarchical hematopoietic system. Numerous lines of evidence have suggested that Eos are multifunctional leukocytes with respect to the initiation, propagation and regulation of various inflammatory or immune reactions, especially in allergic diseases. Recent studies have shown that Eos are also required for maintenance of bone marrow plasma cells and differentiation of B cells. However, it remains unclear whether Eos contributes to regulation of hematopoietic stem cell (HSC) homeostasis. Here, we demonstrate that Eos disrupt HSC homeostasis by impairing HSC quiescence and reconstitution ability in wild-type mice following ovalbumin (OVA) challenge and even by causing bone marrow HSC failure and exhaustion in Cd3δ-Il-5 transgenic mice. The impaired maintenance and function of HSCs were associated with Eos-induced redox imbalance (increased oxidative phosphorylation and decreased anti-oxidants levels). More importantly, using mass spectrometry, we determined that CCL-6 is expressed at a high level under eosinophilia. We demonstrate that CCL-6 is Eos-derived and responsible for the impaired HSC homeostasis. Interestingly, blockage of CCL-6 with a specific neutralizing antibody, restored the reconstitution ability of HSCs while exacerbating eosinophilia airway inflammation in OVA-challenged mice. Thus, our study reveals an unexpected function of Eos/CCL-6 in HSC homeostasis.
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14
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Verschoor A, Karsten CM, Broadley SP, Laumonnier Y, Köhl J. Old dogs-new tricks: immunoregulatory properties of C3 and C5 cleavage fragments. Immunol Rev 2017; 274:112-126. [PMID: 27782330 DOI: 10.1111/imr.12473] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The activation of the complement system by canonical and non-canonical mechanisms results in the generation of multiple C3 and C5 cleavage fragments including anaphylatoxins C3a and C5a as well as opsonizing C3b/iC3b. It is now well appreciated that anaphylatoxins not only act as pro-inflammatory mediators but as immunoregulatory molecules that control the activation status of cells and tissue at several levels. Likewise, C3b/iC3b is more than the opsonizing fragment that facilitates engulfment and destruction of targets by phagocytes. In the circulation, it also facilitates the transport and delivery of bacteria and immune complexes to phagocytes, through a process known as immune adherence, with consequences for adaptive immunity. Here, we will discuss non-classical immunoregulatory properties of C3 and C5 cleavage fragments. We highlight the influence of anaphylatoxins on Th2 and Th17 cell development during allergic asthma with a particular emphasis on their role in the modulation of CD11b+ conventional dendritic cells and monocyte-derived dendritic cells. Furthermore, we discuss the control of anaphylatoxin-mediated activation of dendritic cells and allergic effector cells by adaptive immune mechanisms that involve allergen-specific IgG1 antibodies and plasma or regulatory T cell-derived IL-10 production. Finally, we take a fresh look at immune adherence with a particular focus on the development of antibacterial cytotoxic T-cell responses.
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Affiliation(s)
- Admar Verschoor
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany.
| | - Christian M Karsten
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Steven P Broadley
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Yves Laumonnier
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Jörg Köhl
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany. .,Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
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15
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Fu LQ, Li YL, Fu AK, Wu YP, Wang YY, Hu SL, Li WF. Pidotimod exacerbates allergic pulmonary infection in an OVA mouse model of asthma. Mol Med Rep 2017; 16:4151-4158. [PMID: 28731127 DOI: 10.3892/mmr.2017.7046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Accepted: 05/16/2017] [Indexed: 11/05/2022] Open
Abstract
Pidotimod is a synthetic dipeptide with biological and immuno‑modulatory properties. It has been widely used for treatment and prevention of recurrent respiratory infections. However, its impact on the regulation of allergic pulmonary inflammation is still not clear. In the current study, an ovalbumin (OVA)‑induced allergic asthma model was used to investigate the immune‑modulating effects of pidotimod on airway eosinophilia, mucus metaplasia and inflammatory factor expression compared with dexamethasone (positive control). The authors determined that treatment with pidotimod exacerbated pulmonary inflammation as demonstrated by significantly increased eosinophil infiltration, dramatically elevated immunoglobulin E production, and enhanced T helper 2 response. Moreover, treatment failed to attenuate mucus production in lung tissue, and did not reduce OVA‑induced high levels of FIZZ1 and Arg1 expression in asthmatic mice. In contrast, administration of dexamethasone was efficient in alleviating allergic airway inflammation in OVA‑induced asthmatic mice. These data indicated that pidotimod as an immunotherapeutic agent should be used cautiously and the effectiveness for controlling allergic asthma needs further evaluation and research.
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Affiliation(s)
- Luo-Qin Fu
- Key Laboratory of Molecular Animal Nutrition and Feed Sciences, College of Animal Science, Zhejiang University, Hangzhou, Zhejiang 310058, P.R. China
| | - Ya-Li Li
- Key Laboratory of Molecular Animal Nutrition and Feed Sciences, College of Animal Science, Zhejiang University, Hangzhou, Zhejiang 310058, P.R. China
| | - Ai-Kun Fu
- Key Laboratory of Molecular Animal Nutrition and Feed Sciences, College of Animal Science, Zhejiang University, Hangzhou, Zhejiang 310058, P.R. China
| | - Yan-Ping Wu
- Key Laboratory of Molecular Animal Nutrition and Feed Sciences, College of Animal Science, Zhejiang University, Hangzhou, Zhejiang 310058, P.R. China
| | - Yuan-Yuan Wang
- Key Laboratory of Molecular Animal Nutrition and Feed Sciences, College of Animal Science, Zhejiang University, Hangzhou, Zhejiang 310058, P.R. China
| | - Sheng-Lan Hu
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong 510640, P.R. China
| | - Wei-Fen Li
- Key Laboratory of Molecular Animal Nutrition and Feed Sciences, College of Animal Science, Zhejiang University, Hangzhou, Zhejiang 310058, P.R. China
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16
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MBD2 Regulates Th17 Cell Differentiation and Experimental Severe Asthma by Affecting IRF4 Expression. Mediators Inflamm 2017; 2017:6249685. [PMID: 28808358 PMCID: PMC5541825 DOI: 10.1155/2017/6249685] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 05/31/2017] [Indexed: 11/17/2022] Open
Abstract
Th17 cells and IL-17 participate in airway neutrophil infiltration characteristics in the pathogenesis of severe asthma. Methyl-CpG binding domain protein 2 (MBD2) expression increased in CD4+ T cells in peripheral blood samples of asthma patients. However, little is known about that epigenetic regulation of MBD2 in both immunological pathogenesis of experimental severe asthma and CD4+ T cell differentiation. Here, we established a neutrophil-predominant severe asthma model, which was characterized by airway hyperresponsiveness (AHR), BALF neutrophil granulocyte (NEU) increase, higher NEU and IL-17 protein levels, and more Th17 cell differentiation. In the model, MBD2 and IRF4 protein expression increased in the lung and spleen cells. Under overexpression or silencing of the MBD2 and IRF4 gene, the differentiation of Th17 cells and IL-17 secretion showed positive changes. IRF4 protein expression showed a positive change with overexpression or silencing of the MBD2 gene, whereas there was no significant difference in the expression of MBD2 under overexpression or silencing of the IRF4 gene. These data provide novel insights into epigenetic regulation of severe asthma.
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17
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Jia A, Wang Y, Sun W, Xiao B, Mu L, Wei Y, Xu L, Peng C, Zhang D, Shen H, Xiang X. Comparison of the roles of house dust mite allergens, ovalbumin and lipopolysaccharides in the sensitization of mice to establish a model of severe neutrophilic asthma. Exp Ther Med 2017; 14:2126-2134. [PMID: 28962133 PMCID: PMC5609096 DOI: 10.3892/etm.2017.4776] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 04/21/2017] [Indexed: 01/02/2023] Open
Abstract
Neutrophilic asthma (NA) is associated with a severe disease course and poor response to corticosteroids. The present study aimed to compare the effects of various concentrations of house dust mite (HDM) allergens, ovalbumin (OVA), the major egg allergen, and lipopolysaccharide (LPS) in combination on the onset of severe NA. Female C57BL/6 mice were grouped according to a random number table and intranasally sensitized with HDM/LPS/OVA extracts on days 0, 1 and 2 of the study. In group 1, mice received 50 µg HDM + 50 µg OVA + 15 µg LPS, mice in group 2 received 50 µg HDM + 100 µg OVA + 15 µg LPS, mice in group 3 received 100 µg HDM + 50 µg OVA + 15 µg LPS and those in group 4 received 100 µg HDM + 100 µg OVA + 15 µg LPS, while mice in the control group received saline only. The mice were then challenged by OVA solution with atomized excitation on days 14, 15, 18, 19 and 20 for 30 min each. Ethology, airway hyperresponsiveness (AHR), immune cell distributions in bronchoalveolar lavage fluid (BALF), and specific cytokines interleukin 17A (IL-17A) and IL-4 in serum were assessed. Histological examination of inflammation by hematoxylin and eosin staining and immunohistochemical assessment of neutrophils (NEU), eosinophils (EOS), IL-17A and IL-4 were also performed. Compared with the control group, the HDM/OVA/LPS-sensitized groups 1-4 had markedly increased BALF cells, serum interleukin IL-17A and IL-4, inflammatory cell infiltration, EOS as well as IL-17A and IL-4 by immunohistochemical staining (all P<0.05). Among the four HDM/OVA/LPS-sensitized groups, mice of group 4 had higher AHR, a significantly higher total cell number, NEU and EOS in BALF as well as significantly higher NEU and NEU/EOS ratios according to immunohistochemical staining when compared to groups 1-3 (P<0.05 for all). In conclusion, sensitization with 100 µg HDM + 100 µg OVA + 15 µg LPS successfully established a severe asthma model with a predominantly neutrophilic inflammatory phenotype.
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Affiliation(s)
- Aijun Jia
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Yueling Wang
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, Hunan 410008, P.R. China
| | - Wenjin Sun
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Bing Xiao
- Department of Emergency, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Lin Mu
- Department of Respiratory Medicine, Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
| | - Yan Wei
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Li Xu
- The Second Department of Thoracic Medicine, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan 410006, P.R. China
| | - Cong Peng
- Department of Dermatology and Venereology, Xiangya Hospital of Central South University, Changsha, Hunan 410008, P.R. China
| | - Dongshan Zhang
- Department of Emergency, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Huahao Shen
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Xudong Xiang
- Department of Emergency, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
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18
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Sin Singer Brugiolo A, Carvalho Gouveia AC, de Souza Alves CC, de Castro E Silva FM, Esteves de Oliveira É, Ferreira AP. Ferulic acid supresses Th2 immune response and prevents remodeling in ovalbumin-induced pulmonary allergy associated with inhibition of epithelial-derived cytokines. Pulm Pharmacol Ther 2017; 45:202-209. [PMID: 28689020 DOI: 10.1016/j.pupt.2017.07.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 06/30/2017] [Accepted: 07/03/2017] [Indexed: 12/25/2022]
Abstract
Asthma is characterized by intermittent airway obstruction and chronic inflammation, orchestrated primarily by Th2 cytokines. There is a strong rationale for developing new asthma therapies, since current treatment protocols present side effects and may not be effective in cases of difficult-to-control asthma. The purpose of this study was to evaluate the effect of ferulic acid, a phenolic acid commonly present in plants, in the ovalbumin-induced pulmonary allergy murine model. METHODS BALB/c mice were sensitized and challenged with ovalbumin, and treatments were provided by gavage. Six groups of mice (n = 6) were studied, labeled as: control, pulmonary allergy, dexamethasone, and 3 receiving ferulic acid (at 25, 50, and 100 mg/kg). Lung tissue, bronchoalveolar lavage fluid and serum were collected for analysis. RESULTS Ferulic acid treatment inhibited an established allergic Th2-response by decreasing the key features of pulmonary allergy, including lung and airway inflammation, eosinophil infiltration, mucus production and serum levels of OVA-specific IgE. These results were associated with lower levels of CCL20, CCL11 and CCL5 chemokines and IL-4, IL-5, IL-13, TSLP, IL-25 and IL-33 cytokines in lung tissue homogenate. CONCLUSIONS In this study it was demonstrated for the first time that ferulic acid treatment is able to suppress one of the main features of the airway remodeling, indicated by reduction of mucus production, besides the Th2 pathogenic response on ovalbumin-induced pulmonary allergy. Taken together, results shows that the immunopathological mechanism underlying these effects is linked to a reduction of the epithelial-derived chemokines and cytokines, suggesting that ferulic acid may be useful as a potential therapeutic agent for asthma.
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Affiliation(s)
- Alessa Sin Singer Brugiolo
- IMUNOCET, Departamento de Parasitologia, Microbiologia e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil.
| | - Ana Cláudia Carvalho Gouveia
- IMUNOCET, Departamento de Parasitologia, Microbiologia e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil.
| | - Caio César de Souza Alves
- IMUNOCET, Departamento de Parasitologia, Microbiologia e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil.
| | - Flávia Márcia de Castro E Silva
- IMUNOCET, Departamento de Parasitologia, Microbiologia e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil.
| | - Érick Esteves de Oliveira
- IMUNOCET, Departamento de Parasitologia, Microbiologia e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil.
| | - Ana Paula Ferreira
- IMUNOCET, Departamento de Parasitologia, Microbiologia e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil.
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19
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Clay CD, Strait RT, Mahler A, Khodoun MV, Finkelman FD. Anti-FcγRIIB mAb suppresses murine IgG-dependent anaphylaxis by Fc domain targeting of FcγRIII. J Allergy Clin Immunol 2017. [PMID: 28624610 DOI: 10.1016/j.jaci.2017.05.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND The inhibitory receptor FcγRIIB is expressed on human and murine bone marrow-derived cells and limits inflammation by suppressing signaling through stimulatory receptors. OBJECTIVE We sought to evaluate the effects of K9.361, a mouse IgG2a alloantibody to mouse FcγRIIB, on murine anaphylaxis. METHODS Wild-type and FcγR-deficient mice were used to study anaphylaxis, which was induced by injection of 2.4G2 (rat IgG2b mAb that binds both FcγRIIB and the stimulatory receptor FcγRIII), by actively immunizing IgE-deficient mice and then challenging with the immunizing antigen, and by passive immunization with IgG or IgE anti-2,4,6-trinitrophenyl mAb, followed by injection of 2,4,6-trinitrophenyl-ovalbumin. Pretreatment with K9.361 was assessed for its ability to influence anaphylaxis. RESULTS Unexpectedly, K9.361 injection induced mild anaphylaxis, which was both FcγRIIB and FcγRIII dependent and greatly enhanced by β-adrenergic blockade. K9.361 injection also decreased expression of stimulatory Fcγ receptors, especially FcγRIII, and strongly suppressed IgG-mediated anaphylaxis without strongly affecting IgE-mediated anaphylaxis. The F(ab')2 fragment of K9.361 did not induce anaphylaxis, even after β-adrenergic blockade, and did not deplete FcγRIII or suppress IgG-mediated anaphylaxis but prevented intact K9.361-induced anaphylaxis without diminishing intact K9.36 suppression of IgG-mediated anaphylaxis. CONCLUSION Cross-linking FcγRIIB to stimulatory FcγRs through the Fc domains of an anti-FcγRIIB mAb induces and then suppresses IgG-mediated anaphylaxis without affecting IgE-mediated anaphylaxis. Because IgG- and IgE-mediated anaphylaxis can be mediated by the same cell types, this suggests that desensitization acts at the receptor rather than cellular level. Sequential treatment with the F(ab')2 fragment of anti-FcγRIIB mAb followed by intact anti-FcγRIIB safely prevents IgG-mediated anaphylaxis.
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Affiliation(s)
- Corey D Clay
- Division of Immunology, Allergy and Rheumatology, Department of Medicine, University of Cincinnati Medical Center, Cincinnati, Ohio
| | - Richard T Strait
- Department of Research, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio; Division of Emergency Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Ashley Mahler
- Division of Emergency Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Marat V Khodoun
- Division of Immunology, Allergy and Rheumatology, Department of Medicine, University of Cincinnati Medical Center, Cincinnati, Ohio; Department of Research, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio
| | - Fred D Finkelman
- Division of Immunology, Allergy and Rheumatology, Department of Medicine, University of Cincinnati Medical Center, Cincinnati, Ohio; Department of Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio; Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
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20
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Sun JB, Holmgren J, Cragg MS, Xiang Z. Lack of Fc Gamma Receptor IIIA Promotes Rather than Suppresses Humoral and Cellular Immune Responses after Mucosal or Parenteral Immunization with Antigen and Adjuvants. Scand J Immunol 2017; 85:264-271. [PMID: 28128471 DOI: 10.1111/sji.12528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 01/18/2017] [Indexed: 11/28/2022]
Abstract
The Fcγ receptor IIIA (FcγRIIIA) has traditionally been known as a positive regulator of immune responses. Consistent with this, mice deficient in FcγRIIIA are protected from various inflammation-associated pathologies including several autoimmune diseases. In contrast to this accepted dogma, we show here that mice lacking FcγRIIIA developed increased rather than reduced both humoral and cellular immune responses to mucosal (sublingual) immunization with ovalbumin (OVA) given together with the strong mucosal adjuvant cholera toxin as well as to parenteral (subcutaneous) immunization with OVA in complete Freund's adjuvant. After either route of immunization, in comparison with concomitantly immunized wild-type mice, FcγRIIIA-/- mice had increased serum anti-OVA IgG (IgG1 but not IgG2) antibody responses as well as augmented cellular responses that included memory B cells and effector T cells. The increments in immune responses in FcγRIIIA-/- mice were similar to those seen in FcγRIIB-/- mice. Furthermore, OVA-pulsed FcγRIIIA-/- DCs, similar to OVA-specific FcγRIIB-/- DCs, had enhanced capacity to activate OVA-specific OT-II T cells, which was even further pronounced when DCs were pulsed with IgG1-complexed OVA. Our data support an inhibitory-regulatory role of FcγRIIIA on vaccine/adjuvant-induced immune responses and demonstrate that lack of FcγRIIIA can promote rather than suppress both humoral and cellular immune responses.
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Affiliation(s)
- J-B Sun
- Department of Microbiology and Immunology and University of Gothenburg Vaccine Research Institute (GUVAX), Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Göteborg, Sweden
| | - J Holmgren
- Department of Microbiology and Immunology and University of Gothenburg Vaccine Research Institute (GUVAX), Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Göteborg, Sweden
| | - M S Cragg
- Antibody and Vaccine Group, Cancer Sciences Unit, Faculty of Medicine, Southampton General Hospital, University of Southampton, Southampton, Hampshire, UK
| | - Z Xiang
- Department of Microbiology and Immunology and University of Gothenburg Vaccine Research Institute (GUVAX), Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Göteborg, Sweden
- Department of Health Technology and Informatics, Faculty of Health and Social Sciences, The Hong Kong Polytechnic University, Hong Kong, China
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21
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Abstract
Mouse and human FcRs have been a major focus of attention not only of the scientific community, through the cloning and characterization of novel receptors, and of the medical community, through the identification of polymorphisms and linkage to disease but also of the pharmaceutical community, through the identification of FcRs as targets for therapy or engineering of Fc domains for the generation of enhanced therapeutic antibodies. The availability of knockout mouse lines for every single mouse FcR, of multiple or cell-specific--'à la carte'--FcR knockouts and the increasing generation of hFcR transgenics enable powerful in vivo approaches for the study of mouse and human FcR biology. This review will present the landscape of the current FcR family, their effector functions and the in vivo models at hand to study them. These in vivo models were recently instrumental in re-defining the properties and effector functions of FcRs that had been overlooked or discarded from previous analyses. A particular focus will be made on the (mis)concepts on the role of high-affinity IgG receptors in vivo and on results from antibody engineering to enhance or abrogate antibody effector functions mediated by FcRs.
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Affiliation(s)
- Pierre Bruhns
- Unité des Anticorps en Thérapie et Pathologie, Département d'Immunologie, Institut Pasteur, Paris, France.,INSERM, U760, Paris, France
| | - Friederike Jönsson
- Unité des Anticorps en Thérapie et Pathologie, Département d'Immunologie, Institut Pasteur, Paris, France.,INSERM, U760, Paris, France
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22
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Ciraci C, Janczy JR, Jain N, Haasken S, Pecli e Silva C, Benjamim CF, Sadler JJ, Olivier AK, Iwakura Y, Shayakhmetov DM, Sutterwala FS, Cassel SL. Immune Complexes Indirectly Suppress the Generation of Th17 Responses In Vivo. PLoS One 2016; 11:e0151252. [PMID: 26978520 PMCID: PMC4792482 DOI: 10.1371/journal.pone.0151252] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Accepted: 02/25/2016] [Indexed: 01/01/2023] Open
Abstract
The precise context in which the innate immune system is activated plays a pivotal role in the subsequent instruction of CD4+ T helper (Th) cell responses. Th1 responses are downregulated when antigen is encountered in the presence of antigen-IgG immune complexes. To assess if Th17 responses to antigen are subject to similar influences in the presence of immune complexes we utilized an inflammatory airway disease model in which immunization of mice with Complete Freund’s Adjuvant (CFA) and ovalbumin (Ova) induces a powerful Ova-specific Th1 and Th17 response. Here we show that modification of that immunization with CFA to include IgG-Ova immune complexes results in the suppression of CFA-induced Th17 responses and a concurrent enhancement of Ova-specific Th2 responses. Furthermore, we show the mechanism by which these immune complexes suppress Th17 responses is through the enhancement of IL-10 production. In addition, the generation of Th17 responses following immunization with CFA and Ova were dependent on IL-1α but independent of NLRP3 inflammasome activation. Together these data represent a novel mechanism by which the generation of Th17 responses is regulated.
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Affiliation(s)
- Ceren Ciraci
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Department of Molecular Biology and Genetics, Istanbul Technical University, Istanbul, Turkey
| | - John R. Janczy
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Graduate Program in Immunology, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
| | - Nidhi Jain
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
| | - Stefanie Haasken
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
| | - Cyntia Pecli e Silva
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Claudia F. Benjamim
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jeffrey J. Sadler
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
| | - Alicia K. Olivier
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
| | - Yoichiro Iwakura
- Research Institute for Biomedical Sciences, Tokyo University of Science, Yamasaki 2669, Noda, Chiba, 278–0022, Japan
- Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Saitama, 332–0012, Japan
| | - Dmitry M. Shayakhmetov
- Lowance Center for Human Immunology, Department of Medicine, Emory University, Atlanta, Georgia, United States of America
| | - Fayyaz S. Sutterwala
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Graduate Program in Immunology, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Veterans Affairs Medical Center, Iowa City, Iowa, United States of America
| | - Suzanne L. Cassel
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Graduate Program in Immunology, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, United States of America
- * E-mail:
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23
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Zhang C, Zhang LH, Wu YF, Lai TW, Wang HS, Xiao H, Che LQ, Ying SM, Li W, Chen ZH, Shen HH. Suhuang antitussive capsule at lower doses attenuates airway hyperresponsiveness, inflammation, and remodeling in a murine model of chronic asthma. Sci Rep 2016; 6:21515. [PMID: 26861679 PMCID: PMC4748281 DOI: 10.1038/srep21515] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 01/25/2016] [Indexed: 11/09/2022] Open
Abstract
Suhuang antitussive capsule (Suhuang), a traditional Chinese medication, is found effective in treating chronic cough and cough variant asthma (CVA). This study aimed to determine the possible effects and underlying mechanisms of Suhuang on chronic ovalbumin (OVA)-induced airway hyperresponsiveness (AHR), inflammation, and remodeling in mice. Mice were randomly assigned to six experimental groups: control, OVA model with or without Suhuang (low dose: 3.5 g/kg, middle dose: 7.0 g/kg, high dose: 14.0 g/kg), or dexamethasone (2.5 mg/kg). AHR, inflammatory cells, cytokines in bronchoalveolar lavage fluid (BALF), lung pathology, mucus production, and airway remodeling were examined. We found Suhuang treated at lower doses effectively inhibited OVA-induced AHR, airway inflammation, mucus production and collagen deposition around the airway. High dose of Suhuang reduced most of the inflammatory hallmarks while exerted inconsiderable effects on the number of macrophages in BALF and AHR. At all doses, Suhuang significantly reduced the levels of interlukin (IL) -13 and transforming growth factor (TGF)-β1, but had little effects on IL-4, IL-5, IL-17A and interferon (IFN)-γ. Thus, Suhuang administration alleviates the pathological changes of chronic asthma likely through inhibition of IL-13 and TGF-β1. Suhuang might be a promising therapy for patients with allergic asthma in the future.
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Affiliation(s)
- Chao Zhang
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, Institute of Respiratory Diseases, Zhejiang University School of Medicine, Hangzhou, China
| | - Lan-Hong Zhang
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, Institute of Respiratory Diseases, Zhejiang University School of Medicine, Hangzhou, China
| | - Yin-Fang Wu
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, Institute of Respiratory Diseases, Zhejiang University School of Medicine, Hangzhou, China
| | - Tian-Wen Lai
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, Institute of Respiratory Diseases, Zhejiang University School of Medicine, Hangzhou, China
| | - Hai-Sheng Wang
- Yangtze River Pharmaceutical Group Beijing Haiyan Pharmaceutical Co., Ltd, Beijing, China
| | - Hui Xiao
- Yangtze River Pharmaceutical Group Beijing Haiyan Pharmaceutical Co., Ltd, Beijing, China
| | - Luan-Qing Che
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, Institute of Respiratory Diseases, Zhejiang University School of Medicine, Hangzhou, China
| | - Song-Min Ying
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, Institute of Respiratory Diseases, Zhejiang University School of Medicine, Hangzhou, China
| | - Wen Li
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, Institute of Respiratory Diseases, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhi-Hua Chen
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, Institute of Respiratory Diseases, Zhejiang University School of Medicine, Hangzhou, China
| | - Hua-Hao Shen
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, Institute of Respiratory Diseases, Zhejiang University School of Medicine, Hangzhou, China.,State Key Lab of Respiratory Disease, Guangzhou, China
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24
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Gómez RS, Ramirez BA, Céspedes PF, Cautivo KM, Riquelme SA, Prado CE, González PA, Kalergis AM. Contribution of Fcγ receptors to human respiratory syncytial virus pathogenesis and the impairment of T-cell activation by dendritic cells. Immunology 2016; 147:55-72. [PMID: 26451966 PMCID: PMC4693880 DOI: 10.1111/imm.12541] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 09/16/2015] [Accepted: 09/29/2015] [Indexed: 12/11/2022] Open
Abstract
Human respiratory syncytial virus (hRSV) is the leading cause of infant hospitalization related to respiratory disease. Infection with hRSV produces abundant infiltration of immune cells into the airways, which combined with an exacerbated pro-inflammatory immune response can lead to significant damage to the lungs. Human RSV re-infection is extremely frequent, suggesting that this virus may have evolved molecular mechanisms that interfere with host adaptive immunity. Infection with hRSV can be reduced by administering a humanized neutralizing antibody against the virus fusion protein in high-risk infants. Although neutralizing antibodies against hRSV effectively block the infection of airway epithelial cells, here we show that both, bone marrow-derived dendritic cells (DCs) and lung DCs undergo infection with IgG-coated virus (hRSV-IC), albeit abortive. Yet, this is enough to negatively modulate DC function. We observed that such a process is mediated by Fcγ receptors (FcγRs) expressed on the surface of DCs. Remarkably, we also observed that in the absence of hRSV-specific antibodies FcγRIII knockout mice displayed significantly less cellular infiltration in the lungs after hRSV infection, compared with wild-type mice, suggesting a potentially harmful, IgG-independent role for this receptor in hRSV disease. Our findings support the notion that FcγRs can contribute significantly to the modulation of DC function by hRSV and hRSV-IC. Further, we provide evidence for an involvement of FcγRIII in the development of hRSV pathogenesis.
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MESH Headings
- Adaptive Immunity
- Animals
- Antibodies, Neutralizing/pharmacology
- Antibodies, Viral/immunology
- Antibodies, Viral/metabolism
- Antiviral Agents/pharmacology
- Cells, Cultured
- Coculture Techniques
- Cytokines/metabolism
- Dendritic Cells/drug effects
- Dendritic Cells/immunology
- Dendritic Cells/metabolism
- Dendritic Cells/virology
- Disease Models, Animal
- Immunoglobulin G/immunology
- Immunoglobulin G/metabolism
- Lung/drug effects
- Lung/immunology
- Lung/metabolism
- Lung/virology
- Lymphocyte Activation/drug effects
- Mice, Inbred C57BL
- Mice, Knockout
- Palivizumab/pharmacology
- Receptors, IgG/deficiency
- Receptors, IgG/genetics
- Receptors, IgG/immunology
- Receptors, IgG/metabolism
- Respiratory Syncytial Virus Infections/drug therapy
- Respiratory Syncytial Virus Infections/genetics
- Respiratory Syncytial Virus Infections/immunology
- Respiratory Syncytial Virus Infections/metabolism
- Respiratory Syncytial Virus Infections/virology
- Respiratory Syncytial Virus, Human/drug effects
- Respiratory Syncytial Virus, Human/immunology
- Respiratory Syncytial Virus, Human/pathogenicity
- Signal Transduction
- T-Lymphocytes/drug effects
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- T-Lymphocytes/virology
- Viral Load
- Virus Replication
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Affiliation(s)
- Roberto S. Gómez
- Millennium Institute on Immunology and ImmunotherapyDepartamento de Genética Molecular y MicrobiologíaFacultad de Ciencias BiológicasPontificia Universidad Católica de ChileSantiago de ChileChile
| | - Bruno A. Ramirez
- Millennium Institute on Immunology and ImmunotherapyDepartamento de Genética Molecular y MicrobiologíaFacultad de Ciencias BiológicasPontificia Universidad Católica de ChileSantiago de ChileChile
| | - Pablo F. Céspedes
- Millennium Institute on Immunology and ImmunotherapyDepartamento de Genética Molecular y MicrobiologíaFacultad de Ciencias BiológicasPontificia Universidad Católica de ChileSantiago de ChileChile
| | - Kelly M. Cautivo
- Millennium Institute on Immunology and ImmunotherapyDepartamento de Genética Molecular y MicrobiologíaFacultad de Ciencias BiológicasPontificia Universidad Católica de ChileSantiago de ChileChile
| | - Sebastián A. Riquelme
- Millennium Institute on Immunology and ImmunotherapyDepartamento de Genética Molecular y MicrobiologíaFacultad de Ciencias BiológicasPontificia Universidad Católica de ChileSantiago de ChileChile
- INSERM U1064NantesFrance
| | - Carolina E. Prado
- Millennium Institute on Immunology and ImmunotherapyDepartamento de Genética Molecular y MicrobiologíaFacultad de Ciencias BiológicasPontificia Universidad Católica de ChileSantiago de ChileChile
| | - Pablo A. González
- Millennium Institute on Immunology and ImmunotherapyDepartamento de Genética Molecular y MicrobiologíaFacultad de Ciencias BiológicasPontificia Universidad Católica de ChileSantiago de ChileChile
| | - Alexis M. Kalergis
- Millennium Institute on Immunology and ImmunotherapyDepartamento de Genética Molecular y MicrobiologíaFacultad de Ciencias BiológicasPontificia Universidad Católica de ChileSantiago de ChileChile
- INSERM U1064NantesFrance
- Departamento de ReumatologíaFacultad de Medicina. Pontificia Universidad Católica de ChileSantiago de ChileChile
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25
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Vogelpoel LTC, Baeten DLP, de Jong EC, den Dunnen J. Control of cytokine production by human fc gamma receptors: implications for pathogen defense and autoimmunity. Front Immunol 2015; 6:79. [PMID: 25759693 PMCID: PMC4338787 DOI: 10.3389/fimmu.2015.00079] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 02/10/2015] [Indexed: 01/21/2023] Open
Abstract
Control of cytokine production by immune cells is pivotal for counteracting infections via orchestration of local and systemic inflammation. Although their contribution has long been underexposed, it has recently become clear that human Fc gamma receptors (FcγRs), which are receptors for the Fc region of immunoglobulin G (IgG) antibodies, play a critical role in this process by controlling tissue- and pathogen-specific cytokine production. Whereas individual stimulation of FcγRs does not evoke cytokine production, FcγRs cell-type specifically interact with various other receptors for selective amplification or inhibition of particular cytokines, thereby tailoring cytokine responses to the immunological context. The physiological function of FcγR-mediated control of cytokine production is to counteract infections with various classes of pathogens. Upon IgG opsonization, pathogens are simultaneously recognized by FcγRs as well as by various pathogen-sensing receptors, leading to the induction of pathogen class-specific immune responses. However, when erroneously activated, the same mechanism also contributes to the development of autoimmune diseases such as rheumatoid arthritis and systemic lupus erythematosus. In this review, we discuss control of cytokine production as a novel function of FcγRs in human innate immune cells in the context of homeostasis, infection, and autoimmunity and address the possibilities for future therapeutic exploitation.
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Affiliation(s)
- Lisa T C Vogelpoel
- Department of Cell Biology and Histology, Academic Medical Center, University of Amsterdam , Amsterdam , Netherlands
| | - Dominique L P Baeten
- Department of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam , Amsterdam , Netherlands
| | - Esther C de Jong
- Department of Cell Biology and Histology, Academic Medical Center, University of Amsterdam , Amsterdam , Netherlands
| | - Jeroen den Dunnen
- Department of Cell Biology and Histology, Academic Medical Center, University of Amsterdam , Amsterdam , Netherlands
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26
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Hrusch CL, Tjota MY, Sperling AI. The role of dendritic cells and monocytes in the maintenance and loss of respiratory tolerance. Curr Allergy Asthma Rep 2015; 15:494. [PMID: 25430955 PMCID: PMC4737703 DOI: 10.1007/s11882-014-0494-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Promoting tolerance to inhaled antigens is an active area of study with the potential to benefit the millions of Americans currently suffering from respiratory allergies and asthma. Interestingly, not all individuals with atopy are symptomatic, arguing that sensitization alone does not lead to an allergic clinical phenotype. Respiratory dendritic cells (rDCs), classically associated with inducing inflammatory responses, can actively promote tolerance. Tolerance can be broken when inflammatory stimuli, including viral infections and other environmental exposures, inhibit rDC-mediated tolerance by allowing innocuous antigen to be presented to initiate type-2 immunity. Importantly, rDCs are composed of multiple subsets, each with a unique response to an inhaled antigen that can lead to either tolerance or inflammation. In this review, we will discuss how rDC subsets actively maintain tolerance or, alternatively, break tolerance in response to environmental cues.
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Affiliation(s)
- Cara L. Hrusch
- Committee on Immunology, University of Chicago, Chicago, IL, USA
- Department of Medicine, Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, IL, USA
| | - Melissa Y. Tjota
- Committee on Immunology, University of Chicago, Chicago, IL, USA
- Medical Scientist Training Program, University of Chicago, Chicago, IL, USA
| | - Anne I. Sperling
- Committee on Immunology, University of Chicago, Chicago, IL, USA
- Department of Medicine, Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, IL, USA
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27
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Chan J, Mehta S, Bharrhan S, Chen Y, Achkar JM, Casadevall A, Flynn J. The role of B cells and humoral immunity in Mycobacterium tuberculosis infection. Semin Immunol 2014; 26:588-600. [PMID: 25458990 PMCID: PMC4314354 DOI: 10.1016/j.smim.2014.10.005] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 10/09/2014] [Accepted: 10/10/2014] [Indexed: 12/24/2022]
Abstract
Mycobacterium tuberculosis remains a major public health burden. It is generally thought that while B cell- and antibody-mediated immunity plays an important role in host defense against extracellular pathogens, the primary control of intracellular microbes derives from cellular immune mechanisms. Studies on the immune regulatory mechanisms during infection with M. tuberculosis, a facultative intracellular organism, has established the importance of cell-mediated immunity in host defense during tuberculous infection. Emerging evidence suggest a role for B cell and humoral immunity in the control of intracellular pathogens, including obligatory species, through interactions with the cell-mediated immune compartment. Recent studies have shown that B cells and antibodies can significantly impact on the development of immune responses to the tubercle bacillus. In this review, we present experimental evidence supporting the notion that the importance of humoral and cellular immunity in host defense may not be entirely determined by the niche of the pathogen. A comprehensive approach that examines both humoral and cellular immunity could lead to better understanding of the immune response to M. tuberculosis.
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Affiliation(s)
- John Chan
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Departments of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
| | - Simren Mehta
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Departments of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Sushma Bharrhan
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Departments of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Yong Chen
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Departments of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Jacqueline M Achkar
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Arturo Casadevall
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Departments of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - JoAnne Flynn
- Departments of Molecular Genetics and Biochemistry, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA; Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
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28
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Janczy JR, Ciraci C, Haasken S, Iwakura Y, Olivier AK, Cassel SL, Sutterwala FS. Immune complexes inhibit IL-1 secretion and inflammasome activation. THE JOURNAL OF IMMUNOLOGY 2014; 193:5190-8. [PMID: 25320279 DOI: 10.4049/jimmunol.1400628] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
IgG immune complexes have been shown to modify immune responses driven by APCs in either a pro- or anti-inflammatory direction depending upon the context of stimulation. However, the ability of immune complexes to modulate the inflammasome-dependent innate immune response is unknown. In this study, we show that IgG immune complexes suppress IL-1α and IL-1β secretion through inhibition of inflammasome activation. The mechanism by which this inhibition occurs is via immune complex ligation of activating FcγRs, resulting in prevention of both activation and assembly of the inflammasome complex in response to nucleotide-binding domain leucine-rich repeat (NLR) P3, NLRC4, or AIM2 agonists. In vivo, administration of Ag in the form of an immune complex during priming of the immune response inhibited resultant adaptive immune responses in an NLRP3-dependent model of allergic airway disease. Our data reveal an unexpected mechanism regulating CD4(+) T cell differentiation, by which immune complexes suppress inflammasome activation and the generation of IL-1α and IL-1β from APCs, which are critical for the Ag-driven differentiation of CD4(+) T cells.
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Affiliation(s)
- John R Janczy
- Graduate Program in Immunology, University of Iowa Carver College of Medicine, Iowa City, IA 52242; Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, IA 52242
| | - Ceren Ciraci
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, IA 52242
| | - Stefanie Haasken
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, IA 52242
| | - Yoichiro Iwakura
- Research Institute for Biomedical Sciences, Tokyo University of Science, Chiba 278-0022, Japan; Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Saitama 332-0012, Japan
| | - Alicia K Olivier
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, IA 52242
| | - Suzanne L Cassel
- Graduate Program in Immunology, University of Iowa Carver College of Medicine, Iowa City, IA 52242; Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, IA 52242; Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA 52242; and
| | - Fayyaz S Sutterwala
- Graduate Program in Immunology, University of Iowa Carver College of Medicine, Iowa City, IA 52242; Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, IA 52242; Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA 52242; and Veterans Affairs Medical Center, Iowa City, IA 52241
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29
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Distinct dendritic cell subsets actively induce Th2 polarization. Curr Opin Immunol 2014; 31:44-50. [PMID: 25290173 DOI: 10.1016/j.coi.2014.09.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 09/19/2014] [Accepted: 09/19/2014] [Indexed: 12/24/2022]
Abstract
The mechanisms by which dendritic cells induce Th2 polarization (DC(Th2) cells) have been controversial. Many have argued that DC(Th2) cells are not a distinct functional DC subset, but rather, DC-induced polarization of Th2 cells is a default pathway that occurs in the absence of inflammatory signals leading to DC-induced polarization of Th1/Th17 cells. However, recent studies demonstrate that distinct subsets of tissue DCs actively polarize Th2 cells after stimulation with type-2 inducing stimuli. DC(Th2) cells development is marked by the upregulation of specific transcription factors, cell surface molecules, and cytokines. These findings counter previous hypotheses that Th2 skewing by DCs is a passive response and support a model in which DCs are actively programmed to induce Th2 differentiation.
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30
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Tjota MY, Hrusch CL, Blaine KM, Williams JW, Barrett NA, Sperling AI. Signaling through FcRγ-associated receptors on dendritic cells drives IL-33-dependent TH2-type responses. J Allergy Clin Immunol 2014; 134:706-713.e8. [PMID: 25088053 PMCID: PMC4149927 DOI: 10.1016/j.jaci.2014.06.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 04/25/2014] [Accepted: 06/09/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND Although allergic sensitization can be generated against various allergens, it is unknown how such a diversity of antigens is able to promote TH2-mediated inflammation leading to atopy. Our previous studies demonstrated that allergen-specific IgG immune complexes (ICs) and house dust mite (HDM) extract both induced dendritic cells (DCs) to drive TH2-mediated inflammation, but the mechanism by which these diverse stimuli produce similar responses is unknown. OBJECTIVE We sought to identify the DC signaling pathways used by TH2 stimuli to promote TH2-mediated inflammation. METHODS C57BL/6, FcγRIII(-/-), FcRγ(-/-), and ST2(-/-) mice were sensitized and challenged with HDM, and inflammation was assessed based on results of flow cytometry and histology and cytokine production. Bone marrow-derived DCs from these strains were used in signaling and adoptive transfer experiments. RESULTS Our findings indicate that 2 distinct TH2 stimuli, ICs and HDM, use the FcRγ-associated receptors FcγRIII and Dectin-2, respectively, to promote TH2-mediated lung inflammation. In this study we demonstrate that both ICs and HDM induce expression of IL-33, a critical mediator in asthma pathogenesis and the differentiation of TH2 cells, in DCs. Upregulation of IL-33 in DCs is dependent on FcRγ, Toll-like receptor 4, and phosphoinositide 3-kinase. Exogenous IL-33 is sufficient to restore the development of TH2 responses in FcRγ-deficient mice. Finally, adoptive transfer of allergen-pulsed FcRγ(+/-) bone-marrow derived DCs restores the development of TH2-type inflammation in FcRγ-deficient mice, demonstrating the necessity of this signaling pathway in DCs for allergen-induced inflammation. CONCLUSION These data identify a mechanism whereby TH2 stimuli signal through FcRγ-associated receptors on DCs to upregulate IL-33 production and induce TH2-mediated allergic airway inflammation.
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Affiliation(s)
- Melissa Y Tjota
- Committee on Immunology, University of Chicago, Chicago, Ill; Medical Scientist Training Program, University of Chicago, Chicago, Ill
| | - Cara L Hrusch
- Department of Medicine, Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Ill
| | - Kelly M Blaine
- Department of Medicine, Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Ill
| | - Jesse W Williams
- Committee on Molecular Pathogenesis and Molecular Medicine, University of Chicago, Chicago, Ill
| | - Nora A Barrett
- Department of Medicine, Division of Rheumatology, Immunology, and Allergy, Harvard Medical School, Boston, Mass
| | - Anne I Sperling
- Committee on Immunology, University of Chicago, Chicago, Ill; Department of Medicine, Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Ill; Committee on Molecular Pathogenesis and Molecular Medicine, University of Chicago, Chicago, Ill.
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Nakamura T, Ono K, Suzuki Y, Moriguchi R, Kogure K, Harashima H. Octaarginine-modified liposomes enhance cross-presentation by promoting the C-terminal trimming of antigen peptide. Mol Pharm 2014; 11:2787-95. [PMID: 24901376 DOI: 10.1021/mp500147y] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Exogenous antigen proteolysis by proteasomes and amino peptidases is essential for the production of mature major histocompatibility complex class I (MHC-I) peptides to induce cross-presentation. We report here that when liposomes are modified with octaarginine (R8-Lip), a type of cell-penetrating peptide, the production of the mature MHC-I peptide is enhanced by promoting the C-terminal trimming of the antigen peptide. The efficiency of cross-presentation of ovalbumin (OVA) using the R8-Lip was dramatically higher than that by octalysine modified liposomes (K8-Lip) in mouse bone-marrow derived dendritic cells (BMDCs), although the physical characters of both liposomes were comparable. In this study, we investigated the mechanism responsible for the enhancement in cross-presentation by R8-Lip. Although the efficiencies of cellular uptake, endosomal escape, proteolysis of OVA and DC maturation between the two systems were essentially the same, an analysis of peptide trimming to SIINFEKL (mature MHC-I peptide of OVA) by using R8-Lip and K8-Lip encapsulating peptides of various length clearly indicates that the use of R8-Lip enhances the efficiency of the C-terminal cleavage of antigen-derived peptides. This finding provides a new strategy for achieving efficient cross-presentation by using R8 peptide and arginine-rich peptides. Moreover, this result may contribute to the development of a new paradigm regarding the machinery associated with antigen peptide production.
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Affiliation(s)
- Takashi Nakamura
- Faculty of Pharmaceutical Sciences, Hokkaido University , Sapporo 060-0812, Japan
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Molecular basis for downregulation of C5a-mediated inflammation by IgG1 immune complexes in allergy and asthma. Curr Allergy Asthma Rep 2014; 13:596-606. [PMID: 24013944 DOI: 10.1007/s11882-013-0387-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Allergy and asthma are triggered primarily by the binding of allergen-specific immunoglobulin E (IgE)-allergen complexes to their receptors, recognition of the allergens by antigen-presenting cells, and allergen presentation to the T cells. These events lead to mucus secretions, runny nose, itchy eyes, sneezing, airway hyperresponsiveness, and nasal congestion. Complement 5a (C5a) has emerged as a central molecule that mediates these allergic reactions. Many allergens and allergen-specific IgG immune complexes (IgG-ICs) cause complement activation and C5a generation. C5a interaction with its receptor (C5aR) leads to the infiltration and activation of several immunologic cell types and the secretion of pathogenic inflammatory and proinflammatory mediators. However, IgG1-IC binding to the IgG inhibitory Fc gamma receptor (FcγRIIB) suppresses C5aR-mediated inflammatory signaling and, hence, may reduce the inflammatory immune responses through this FcγRIIB-mediated pathway. Reviews of the IgG1-IC interactions with C5a-mediated inflammatory immune responses suggest that IgG1-IC-C5a inhibitory therapy may reduce inflammation in allergic diseases.
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Guilliams M, Bruhns P, Saeys Y, Hammad H, Lambrecht BN. The function of Fcγ receptors in dendritic cells and macrophages. Nat Rev Immunol 2014; 14:94-108. [PMID: 24445665 DOI: 10.1038/nri3582] [Citation(s) in RCA: 477] [Impact Index Per Article: 47.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Dendritic cells (DCs) and macrophages use various receptors to recognize foreign antigens and to receive feedback control from adaptive immune cells. Although it was long believed that all immunoglobulin Fc receptors are universally expressed by phagocytes, recent findings indicate that only monocyte-derived DCs and macrophages express high levels of activating Fc receptors for IgG (FcγRs), whereas conventional and plasmacytoid DCs express the inhibitory FcγR. In this Review, we discuss how the uptake, processing and presentation of antigens by DCs and macrophages is influenced by FcγR recognition of immunoglobulins and immune complexes in the steady state and during inflammation.
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Affiliation(s)
- Martin Guilliams
- 1] Laboratory of Immunoregulation, VIB Inflammation Research Center, 9052 Ghent, Belgium. [2] Department of Respiratory Medicine, Ghent University, 9000 Ghent, Belgium
| | - Pierre Bruhns
- 1] Institut Pasteur, Département d'Immunologie, Laboratoire Anticorps en Thérapie et Pathologie, 75015 Paris, France. [2] Institut National de la Santé et de la Recherche Médicale, U760, 75015 Paris, France
| | - Yvan Saeys
- 1] Laboratory of Immunoregulation, VIB Inflammation Research Center, 9052 Ghent, Belgium. [2] Department of Respiratory Medicine, Ghent University, 9000 Ghent, Belgium
| | - Hamida Hammad
- 1] Laboratory of Immunoregulation, VIB Inflammation Research Center, 9052 Ghent, Belgium. [2] Department of Respiratory Medicine, Ghent University, 9000 Ghent, Belgium
| | - Bart N Lambrecht
- 1] Laboratory of Immunoregulation, VIB Inflammation Research Center, 9052 Ghent, Belgium. [2] Department of Respiratory Medicine, Ghent University, 9000 Ghent, Belgium. [3] Department of Pulmonary Medicine, Erasmus University Medical Center, 3015 Rotterdam, The Netherlands
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Tjota MY, Williams JW, Lu T, Clay BS, Byrd T, Hrusch CL, Decker DC, de Araujo CA, Bryce PJ, Sperling AI. IL-33-dependent induction of allergic lung inflammation by FcγRIII signaling. J Clin Invest 2013; 123:2287-97. [PMID: 23585480 DOI: 10.1172/jci63802] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 02/21/2013] [Indexed: 11/17/2022] Open
Abstract
Atopic asthma is a chronic inflammatory disease of the lungs generally marked by excessive Th2 inflammation. The role of allergen-specific IgG in asthma is still controversial; however, a receptor of IgG-immune complexes (IgG-ICs), FcγRIII, has been shown to promote Th2 responses through an unknown mechanism. Herein, we demonstrate that allergen-specific IgG-ICs, formed upon reexposure to allergen, promoted Th2 responses in two different models of IC-mediated inflammation that were independent of a preformed T cell memory response. Development of Th2-type airway inflammation was shown to be both FcγRIII and TLR4 dependent, and T cells were necessary and sufficient for this process to occur, even in the absence of type 2 innate lymphoid cells. We sought to identify downstream targets of FcγRIII signaling that could contribute to this process and demonstrated that bone marrow-derived DCs, alveolar macrophages, and respiratory DCs significantly upregulated IL-33 when activated through FcγRIII and TLR4. Importantly, IC-induced Th2 inflammation was dependent on the ST2/IL-33 pathway. Our results suggest that allergen-specific IgG can enhance secondary responses by ligating FcγRIII on antigen-presenting cells to augment development of Th2-mediated responses in the lungs via an IL-33-dependent mechanism.
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Affiliation(s)
- Melissa Y Tjota
- Committee on Immunology, University of Chicago, Chicago, Illinois 60637, USA
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Karsten CM, Köhl J. The immunoglobulin, IgG Fc receptor and complement triangle in autoimmune diseases. Immunobiology 2013; 217:1067-79. [PMID: 22964232 DOI: 10.1016/j.imbio.2012.07.015] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 07/18/2012] [Accepted: 07/18/2012] [Indexed: 01/19/2023]
Abstract
Immunoglobulin G (IgG)-mediated activation of complement and IgG Fc receptors (FcγRs) are important defense mechanisms of the innate immune system to ward off infections. However, the same mechanisms can drive severe and harmful inflammation, when IgG antibodies react with self-antigens in solution or tissues, as described for several autoimmune diseases including systemic lupus erythematosus, rheumatoid arthritis, and immune vasculitis. More specifically, IgG immune complexes (ICs) can activate all three pathways of the complement system resulting in the generation of C3 and C5 cleavage products that can activate a panel of different complement receptors on innate and adaptive immune cells. Importantly, complement and FcγRs are often co-expressed on inflammatory immune cells such as neutrophils, monocytes, macrophages or dendritic cells and act in concert to mediate the inflammatory response in autoimmune diseases. In this context, the cross-talk between the receptor for the anaphylatoxin C5a, i.e. C5ar1 (CD88) and FcγRs is of major importance. Recent data suggest a model of bidirectional regulation, in which CD88 acts upstream of FcγRs and sets the threshold for FcγR-dependent effector responses by regulating the ratio between activating and inhibitory FcγRs. Vice versa, FcγR ligation can either amplify or block C5aR-mediated effector functions, depending on whether IgG IC aggregate activating or inhibitory FcγRs. Further, complement and FcγRs cooperate on B cells and on follicular dendritic cells to regulate the development of autoreactive B cells, their differentiation into plasma cells and, eventually, the production of autoantibodies. Here, we will give an update on recent findings regarding this complex regulatory network between complement and FcγRs, which may also regulate the inflammatory response in allergy, cancer and infection.
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Affiliation(s)
- Christian M Karsten
- Institute for Systemic Inflammation Research, University of Lübeck, 23538 Lübeck, Germany
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Förster M, Raposo B, Ekman D, Klaczkowska D, Popovic M, Nandakumar KS, Lindvall T, Hultqvist M, Teneva I, Johannesson M, Ahlqvist E, Holmdahl R. Genetic control of antibody production during collagen-induced arthritis development in heterogeneous stock mice. ACTA ACUST UNITED AC 2013; 64:3594-603. [PMID: 22886420 DOI: 10.1002/art.34658] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
OBJECTIVE To identify genetic factors driving pathogenic autoantibody formation in collagen-induced arthritis (CIA), a mouse model of rheumatoid arthritis (RA), in order to better understand the etiology of RA and identify possible new avenues for therapeutic intervention. METHODS We performed a genome-wide analysis of quantitative trait loci controlling autoantibody to type II collagen (anti-CII), anti-citrullinated protein antibody (ACPA), and rheumatoid factor (RF). To identify loci controlling autoantibody production, we induced CIA in a heterogeneous stock-derived mouse cohort, with contribution of 8 inbred mouse strains backcrossed to C57BL/10.Q. Serum samples were collected from 1,640 mice before arthritis onset and at the peak of the disease. Antibody concentrations were measured by standard enzyme-linked immunosorbent assay, and linkage analysis was performed using a linear regression-based method. RESULTS We identified loci controlling formation of anti-CII of different IgG isotypes (IgG1, IgG3), antibodies to major CII epitopes (C1, J1, U1), antibodies to a citrullinated CII peptide (citC1), and RF. The anti-CII, ACPA, and RF responses were all found to be controlled by distinct genes, one of the most important loci being the immunoglobulin heavy chain locus. CONCLUSION This comprehensive genetic analysis of autoantibody formation in CIA demonstrates an association not only of anti-CII, but interestingly also of ACPA and RF, with arthritis development in mice. These results underscore the importance of non-major histocompatibility complex genes in controlling the formation of clinically relevant autoantibodies.
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Kozakiewicz L, Phuah J, Flynn J, Chan J. The role of B cells and humoral immunity in Mycobacterium tuberculosis infection. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2013; 783:225-50. [PMID: 23468112 DOI: 10.1007/978-1-4614-6111-1_12] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Tuberculosis (TB) remains a serious threat to public health, causing 2 million deaths annually world-wide. The control of TB has been hindered by the requirement of long duration of treatment involving multiple chemotherapeutic agents, the increased susceptibility to Mycobacterium tuberculosis infection in the HIV-infected population, and the development of multi-drug resistant and extensively resistant strains of tubercle bacilli. An efficacious and cost-efficient way to control TB is the development of effective anti-TB vaccines. This measure requires thorough understanding of the immune response to M. tuberculosis. While the role of cell-mediated immunity in the development of protective immune response to the tubercle bacillus has been well established, the role of B cells in this process is not clearly understood. Emerging evidence suggests that B cells and humoral immunity can modulate the immune response to various intracellular pathogens, including M. tuberculosis. These lymphocytes form conspicuous aggregates in the lungs of tuberculous humans, non-human primates, and mice, which display features of germinal center B cells. In murine TB, it has been shown that B cells can regulate the level of granulomatous reaction, cytokine production, and the T cell response. This chapter discusses the potential mechanisms by which specific functions of B cells and humoral immunity can shape the immune response to intracellular pathogens in general, and to M. tuberculosis in particular. Knowledge of the B cell-mediated immune response to M. tuberculosis may lead to the design of novel strategies, including the development of effective vaccines, to better control TB.
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Affiliation(s)
- Lee Kozakiewicz
- Department of Medicine and Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA
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Williams JW, Tjota MY, Clay BS, Lugt BV, Bandukwala HS, Hrusch CL, Decker DC, Blaine KM, Fixsen BR, Singh H, Sciammas R, Sperling AI. Transcription factor IRF4 drives dendritic cells to promote Th2 differentiation. Nat Commun 2013; 4:2990. [PMID: 24356538 PMCID: PMC4003872 DOI: 10.1038/ncomms3990] [Citation(s) in RCA: 291] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Accepted: 11/21/2013] [Indexed: 12/12/2022] Open
Abstract
Atopic asthma is an inflammatory pulmonary disease associated with Th2 adaptive immune responses triggered by innocuous antigens. While dendritic cells (DCs) are known to shape the adaptive immune response, the mechanisms by which DCs promote Th2 differentiation remain elusive. Herein we demonstrate that Th2-promoting stimuli induce DC expression of IRF4. Mice with conditional deletion of Irf4 in DCs show a dramatic defect in Th2-type lung inflammation, yet retain the ability to elicit pulmonary Th1 antiviral responses. Using loss- and gain-of-function analysis, we demonstrate that Th2 differentiation is dependent on IRF4 expression in DCs. Finally, IRF4 directly targets and activates the Il-10 and Il-33 genes in DCs. Reconstitution with exogenous IL-10 and IL-33 recovers the ability of Irf4-deficient DCs to promote Th2 differentiation. These findings reveal a regulatory module in DCs by which IRF4 modulates IL-10 and IL-33 cytokine production to specifically promote Th2 differentiation and inflammation.
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Affiliation(s)
- Jesse W. Williams
- Committee on Molecular Pathogenesis and Molecular Medicine, University of Chicago, 924 E. 57 St., Chicago, IL, 60637 USA
| | - Melissa Y. Tjota
- Committee on Immunology, University of Chicago, 924 E. 57 St., Chicago, IL, 60637 USA
- Medical Scientist Training Program, University of Chicago, 924 E. 57 St., Chicago, IL, 60637 USA
| | - Bryan S. Clay
- Committee on Immunology, University of Chicago, 924 E. 57 St., Chicago, IL, 60637 USA
| | - Bryan Vander Lugt
- Department of Discovery Immunology, Genentech Inc., 1 DNA Way, S. San Francisco, CA, 94080 USA
| | - Hozefa S. Bandukwala
- Committee on Immunology, University of Chicago, 924 E. 57 St., Chicago, IL, 60637 USA
| | - Cara L. Hrusch
- Section of Pulmonary and Critical Care Medicine, Department of Medicine, University of Chicago, 924 E. 57 St., Chicago, IL, 60637 USA
| | - Donna C. Decker
- Section of Pulmonary and Critical Care Medicine, Department of Medicine, University of Chicago, 924 E. 57 St., Chicago, IL, 60637 USA
| | - Kelly M. Blaine
- Section of Pulmonary and Critical Care Medicine, Department of Medicine, University of Chicago, 924 E. 57 St., Chicago, IL, 60637 USA
| | - Bethany R. Fixsen
- Section of Pulmonary and Critical Care Medicine, Department of Medicine, University of Chicago, 924 E. 57 St., Chicago, IL, 60637 USA
| | - Harinder Singh
- Department of Discovery Immunology, Genentech Inc., 1 DNA Way, S. San Francisco, CA, 94080 USA
| | - Roger Sciammas
- Department of Surgery, University of Chicago, 924 E. 57 St., Chicago, IL, 60637 USA
| | - Anne I. Sperling
- Committee on Molecular Pathogenesis and Molecular Medicine, University of Chicago, 924 E. 57 St., Chicago, IL, 60637 USA
- Committee on Immunology, University of Chicago, 924 E. 57 St., Chicago, IL, 60637 USA
- Section of Pulmonary and Critical Care Medicine, Department of Medicine, University of Chicago, 924 E. 57 St., Chicago, IL, 60637 USA
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Søndergaard JN, Brix S. Isolation of IL-12p70-competent human monocyte-derived dendritic cells. J Immunol Methods 2012; 386:112-6. [DOI: 10.1016/j.jim.2012.09.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 09/10/2012] [Accepted: 09/14/2012] [Indexed: 12/21/2022]
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Williams JW, Tjota MY, Sperling AI. The contribution of allergen-specific IgG to the development of th2-mediated airway inflammation. J Allergy (Cairo) 2012; 2012:236075. [PMID: 23150737 PMCID: PMC3485540 DOI: 10.1155/2012/236075] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Accepted: 09/18/2012] [Indexed: 01/01/2023] Open
Abstract
In both human asthmatics and animal models of allergy, allergen-specific IgG can contribute to Th2-mediated allergic inflammation. Mouse models have elucidated an important role for IgG and Fc-gamma receptor (FcγR) signaling on antigen presenting cells (APC) for the induction of airway inflammation. These studies suggest a positive feedback loop between IgG produced by the adaptive B cell response and FcγR signaling on innate immune cells. Studies of IgG and FcγRs in humans with asthma or allergic lung disease have been more controversial. Some reports have identified associations between allergen-specific IgG and severity of allergic responses, while other studies have found associations of IgG subclass IgG4 with allergic tolerance. In this paper, we review the literature to help define the nature of IgG and FcγR signaling on innate immune cells and how it contributes to the development of allergic immune responses.
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Affiliation(s)
- Jesse W. Williams
- Committee on Molecular Pathology and Molecular Medicine, University of Chicago, Chicago, IL 60637, USA
| | - Melissa Y. Tjota
- Interdisciplinary Scientist Training Program and Committee on Immunology, University of Chicago, Chicago, IL 60637, USA
| | - Anne I. Sperling
- Committee on Molecular Pathology and Molecular Medicine, University of Chicago, Chicago, IL 60637, USA
- Interdisciplinary Scientist Training Program and Committee on Immunology, University of Chicago, Chicago, IL 60637, USA
- Section of Pulmonary and Critical Care Medicine, Department of Medicine, University of Chicago, Chicago, IL 60637, USA
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IgG opsonization of bacteria promotes Th17 responses via synergy between TLRs and FcγRIIa in human dendritic cells. Blood 2012; 120:112-21. [PMID: 22649103 DOI: 10.1182/blood-2011-12-399931] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Dendritic cells (DCs) are essential in inducing adaptive immune responses against bacteria by expressing cytokines that skew T-cell responses toward protective Th17 cells. Although it is widely recognized that induction of these cytokines by DCs involves activation of multiple receptors, it is still incompletely characterized which combination of receptors specifically skews Th17-cell responses. Here we have identified a novel role for FcγRIIa in promoting human Th17 cells. Activation of DCs by bacteria opsonized by serum IgG strongly promoted Th17 responses, which was FcγRIIa-dependent and coincided with enhanced production of selected cytokines by DCs, including Th17-promoting IL-1β and IL-23. Notably, FcγRIIa stimulation on DCs did not induce cytokine production when stimulated individually, but selectively amplified cytokine responses through synergy with TLR2, 4, or 5. Importantly, this synergy is mediated at 2 different levels. First, TLR-FcγRIIa costimulation strongly increased transcription of pro-IL-1β and IL-23p19. Second, FcγRIIa triggering induced activation of caspase-1, which cleaves pro-IL-1β into its bioactive form and thereby enhanced IL-1β secretion. Taken together, these data identified cross-talk between TLRs and FcγRIIa as a novel mechanism by which DCs promote protective effector Th17-cell responses against bacteria.
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Hohchi N, Hashida K, Ohkubo JI, Wakasugi T, Mori T, Nguyen KH, Kuroda E, Ikeno T, Taniguchi H, Suzuki H. Synergism of Staphylococcus aureus colonization and allergic reaction in the nasal cavity in mice. Int Arch Allergy Immunol 2012; 159:33-40. [PMID: 22555155 DOI: 10.1159/000335200] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Accepted: 11/04/2011] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The aim of this study is to investigate the reciprocal effect of Staphylococcus aureus colonization and allergic rhinitis in an allergy model of mice. METHODS BALB/c mice with intraperitoneal ovalbumin (OVA) sensitization and/or intranasal S. aureus inoculation were prepared. The following 4 groups were designed: an OVA-sensitized S. aureus-inoculated (AR-SA) group, an OVA-sensitized uninoculated (AR) group, a nonsensitized S. aureus-inoculated (SA) group, and a nonsensitized uninoculated (control) group. After intranasal OVA challenge, nasal lavage fluid, peripheral blood, and nasal mucosa were collected. Polymorphonuclear cells in the nasal lavage fluid were counted, serum OVA-specific IgE and IgG1 were measured by enzyme immunoassays, and IL-4, IL-5, and IFN-γ mRNAs in the nasal mucosa were assessed by quantitative real-time reverse transcription-PCR. The number of S. aureus in the nasal mucosa and lavage fluid was counted. RESULTS Both eosinophil and neutrophil counts were larger in the AR-SA group than in the other groups. Both IgE and IgG1 levels were higher in the AR and AR-SA groups than in the SA and control groups, and the IgG1 level was higher in the AR-SA group than in the AR group. The expression of IL-4 mRNA was higher in the AR-SA group than in the other groups, and the expression of IL-5 mRNA was higher in the AR-SA group than in the SA group. The AR-SA group showed higher counts of S. aureus in the nasal mucosa than the SA group. CONCLUSION These results indicate the mutually potentiating effect of S. aureus colonization and allergic rhinitis.
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Affiliation(s)
- Nobusuke Hohchi
- Department of Otorhinolaryngology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
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Falanga YT, Chaimowitz NS, Charles N, Finkelman FD, Pullen NA, Barbour S, Dholaria K, Faber T, Kolawole M, Huang B, Odom S, Rivera J, Carlyon J, Conrad DH, Spiegel S, Oskeritzian CA, Ryan JJ. Lyn but not Fyn kinase controls IgG-mediated systemic anaphylaxis. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2012; 188:4360-8. [PMID: 22450804 PMCID: PMC3536057 DOI: 10.4049/jimmunol.1003223] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Anaphylaxis is a rapid, life-threatening hypersensitivity reaction. Until recently, it was mainly attributed to histamine released by mast cells activated by allergen crosslinking (XL) of FcεRI-bound allergen-specific IgE. However, recent reports established that anaphylaxis could also be triggered by basophil, macrophage, and neutrophil secretion of platelet-activating factor subsequent to FcγR stimulation by IgG/Ag complexes. We have investigated the contribution of Fyn and Lyn tyrosine kinases to FcγRIIb and FcγRIII signaling in the context of IgG-mediated passive systemic anaphylaxis (PSA). We found that mast cell IgG XL induced Fyn, Lyn, Akt, Erk, p38, and JNK phosphorylation. Additionally, IgG XL of mast cells, basophils, and macrophages resulted in Fyn- and Lyn-regulated mediator release in vitro. FcγR-mediated activation was enhanced in Lyn-deficient (knockout [KO]) cells, but decreased in Fyn KO cells, compared with wild-type cells. More importantly, Lyn KO mice displayed significantly exacerbated PSA features whereas no change was observed for Fyn KO mice, compared with wild-type littermates. Intriguingly, we establish that mast cells account for most serum histamine in IgG-induced PSA. Taken together, our findings establish pivotal roles for Fyn and Lyn in the regulation of PSA and highlight their unsuspected functions in IgG-mediated pathologies.
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Affiliation(s)
- Yves T. Falanga
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Natalia S. Chaimowitz
- Department of Microbiology and Immunology, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298 USA
| | - Nicolas Charles
- Inserm U699 "Immunopathologie Rénale, Récepteurs et Inflammation", Faculté de Médecine Xavier Bichat - Université Paris VII Denis Diderot, 75870 PARIS cedex 18, France
| | - Fred D. Finkelman
- Research Service, Cincinnati Veterans Affairs Medical Center, Cincinnati, OH 45220, § Division of Immunology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, § Division of Immunobiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229
| | - Nicholas A. Pullen
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Suzanne Barbour
- Department of Microbiology and Immunology, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298 USA
| | - Kevin Dholaria
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Travis Faber
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Motunrayo Kolawole
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Bernice Huang
- Department of Microbiology and Immunology, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298 USA
| | - Sandra Odom
- Laboratory of Molecular Immunogenetics, NIAMS, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Juan Rivera
- Laboratory of Molecular Immunogenetics, NIAMS, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Jason Carlyon
- Department of Microbiology and Immunology, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298 USA
| | - Daniel H. Conrad
- Department of Microbiology and Immunology, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298 USA
| | - Sarah Spiegel
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, VA 23298
| | - Carole A. Oskeritzian
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, VA 23298
| | - John J. Ryan
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
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Joller N, Weber SS, Oxenius A. Antibody - Fc receptor interactions in protection against intracellular pathogens. Eur J Immunol 2011; 41:889-97. [DOI: 10.1002/eji.201041340] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Revised: 02/21/2011] [Accepted: 03/02/2011] [Indexed: 01/12/2023]
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Programming dendritic cells to induce T(H)2 and tolerogenic responses. Nat Immunol 2010; 11:647-55. [PMID: 20644570 DOI: 10.1038/ni.1894] [Citation(s) in RCA: 275] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A fundamental puzzle in immunology is how the immune system decides what types of immune responses to launch against different stimuli. Although much is known about control of T helper type 1 (T(H)1) and T(H)17 responses, the mechanisms that initiate T(H)2 and T regulatory (T(reg)) responses remain obscure. Emerging studies suggest a fundamental role for the innate immune system, particularly dendritic cells (DCs), in this process. We review these studies, and suggest that the innate control of T(H)2 and T(reg) responses can be viewed as different hierarchies of organization, in which DCs, their innate receptors and signaling networks, and their interactions with other cells and local microenvironments represent different levels of the hierarchy.
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Hartwig C, Mazzega M, Constabel H, Krishnaswamy JK, Gessner JE, Braun A, Tschernig T, Behrens GMN. Fcgamma receptor-mediated antigen uptake by lung DC contributes to allergic airway hyper-responsiveness and inflammation. Eur J Immunol 2010; 40:1284-95. [PMID: 20148421 DOI: 10.1002/eji.200939900] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
During asthma, lung DC capture and process antigens to initiate and maintain allergic Th2 cell responses to inhaled allergens. The aim of the study was to investigate whether allergen-specific IgG, generated during sensitization, can potentiate the acute airway inflammation through Fcgamma receptor (FcgammaR)-mediated antigen uptake and enhance antigen presentation resulting in augmented T-cell proliferation. We examined the impact of antigen presentation and T-cell stimulation on allergic airway hyperresponsiveness and inflammation using transgenic and gene-deficient mice. Both airway inflammation and eosinophilia in bronchoalveolar lavage fluid were markedly reduced in sensitized and challenged FcgammaR-deficient mice. Lung DC of WT, but not FcgammaR-deficient mice, induced increased antigen-specific CD4+ T-cell proliferation when pulsed with anti-OVA IgG immune complexes. Intranasal application of anti-OVA IgG immune complexes resulted in enhanced airway inflammation, eosinophilia and Th2 cytokine release, mediated through enhanced antigen-specific T-cell proliferation in vivo. Finally, antigen-specific IgG in the serum of sensitized mice led to a significant increase of antigen-specific CD4+ T-cell proliferation induced by WT, but not FcgammaR-deficient, lung DC. We conclude that FcgammaR-mediated enhanced antigen presentation and T-cell stimulation by lung DC has a significant impact on inflammatory responses following allergen challenge in asthma.
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Affiliation(s)
- Christina Hartwig
- Institute for Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany
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Blink SE, Fu YX. IgE regulates T helper cell differentiation through FcgammaRIII mediated dendritic cell cytokine modulation. Cell Immunol 2010; 264:54-60. [PMID: 20494341 DOI: 10.1016/j.cellimm.2010.04.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2009] [Revised: 04/22/2010] [Accepted: 04/28/2010] [Indexed: 01/22/2023]
Abstract
Asthma and allergy are characterized by dysregulation of inflammatory responses toward Th2 responses and high serum levels of IgE. IgE plays a role in the effector phase by triggering the degranulation of mast cells after antigen-crosslinking but its role in the induction of helper T cell differentiation is unknown. We have previously shown lymphotoxin is required for maintaining physiological levels of serum IgE which minimize spontaneous Th1-mediated airway inflammation, suggesting a physiological role for IgE in the regulation of T helper cell differentiation. We describe the mechanism in which IgE modulates inflammation by regulating dendritic cell cytokine production. Physiological levels of IgE suppress IL-12 production in the spleen and lung, suggesting IgE limits Th1 responses in vivo. IgE directly stimulates dendritic cells through FcgammaRIII to suppress IL-12 in vitro and influences APC to skew CD4+ T cells toward Th2 differentiation. We demonstrate a novel role for IgE in regulating differentiation of adaptive inflammatory responses through direct interaction with FcgammaRIII on dendritic cells.
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Affiliation(s)
- Sarah E Blink
- Committee on Immunology, University of Chicago, 5841 S. Maryland, Chicago, IL 60637, USA.
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Kelly JA, Griffin ME, Fava RA, Wood SG, Bessette KA, Miller ER, Huber SA, Binder CJ, Witztum JL, Morganelli PM. Inhibition of arterial lesion progression in CD16-deficient mice: evidence for altered immunity and the role of IL-10. Cardiovasc Res 2010; 85:224-31. [PMID: 19720605 DOI: 10.1093/cvr/cvp300] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
AIMS Given the importance of IgG Fc receptors in immune regulation, we hypothesized that Fcg receptor type III (FcgRIII, CD16) plays an important role in atherogenesis. We therefore analysed the formation of arterial lesions in LDL receptor-deficient (LDLR(-/-)) and FcgRIII(-/-)xLDLR(-/-) double knockout mice at three different points up to 24 weeks of exposure to a high-fat diet. METHODS AND RESULTS Analysis of Oil Red-O-stained sections revealed no difference in lesion formation between strains after 6 weeks of a high-fat diet, and a modest decrease after 14 weeks in double knockouts relative to LDLR(-/-) controls. After 24 weeks, lesion formation was decreased in the aortic root (30%) and innominate artery (50%) in FcgRIII double knockouts relative to LDLR(-/-) controls. Analysis of peripheral CD4+ T-cells by intracellular flow cytometry from double knockouts after 24 weeks of a high-fat diet revealed statistically significant increases in the percentages of cells producing interferon-gamma, interleukin (IL)-10, and IL-4 relative to controls, differences that were also observed by analyses of whole aortas for cytokine mRNA levels. As determined by flow cytometry, FcgRIII deficiency resulted in an expansion of CD4+ cells and an increase in the CD4 to CD8 ratio. Analysis of plasma anti-oxidized LDL (OxLDL) antibodies by chemiluminescent assay revealed that IgG1 and IgG2c titers to OxLDL were increased in FcgRIII (-/-)xLDLR(-/-) double knockouts relative to LDLR(-/-) controls, while total IgG levels were similar. CONCLUSION These results reveal altered immunity in FcgRIII(-/-)xLDLR(-/-) mice and a reduction in lesion formation associated with increased production of IL-10 by an expansion of CD4+ T-cells. The reduction in lesion formation was manifest well after evidence of an immune response to OxLDL, suggesting that FcgRIII contributes to lesion progression in murine atherosclerosis.
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Constabel H, Stankov MV, Hartwig C, Tschernig T, Behrens GMN. Impaired lung dendritic cell migration and T cell stimulation induced by immunostimulatory oligonucleotides contribute to reduced allergic airway inflammation. THE JOURNAL OF IMMUNOLOGY 2009; 183:3443-53. [PMID: 19667097 DOI: 10.4049/jimmunol.0804223] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
CpG-containing oligonucleotides (CpG) have been shown to reduce key features of allergic airway inflammation in mouse models. Given the inhibitory effects of CpG treatment on Ag presentation of subsequently encountered Ags via MHC class I and II molecules by dendritic cells (DC), we hypothesized that intranasal CpG treatment would lead to reduced Ag-specific T cell stimulation in the lung-draining lymph nodes, thereby reducing the inflammatory response in sensitized mice. Intranasal CpG administration led to phenotypic maturation of lung and mediastinal lymph node DC as determined by expression of MHC class II, CD80, and CD86. This was accompanied by a significant reduction in the proliferation of adoptively transferred Ag-specific CD4(+) and CD8(+) T cells in mediastinal lymph nodes, when CpG was given before inhalative OVA challenges. DC obtained from mediastinal lymph nodes of CpG-treated mice before OVA inhalation led to reduced T cell stimulation via MHC class I and II molecules. In addition, CpG diminished airway eosinophilia and pulmonary infiltration after sensitization or following adoptive transfer of Ag-specific Th2 cells. These results were explained by reduced CCL21 expression and inhibition of lung DC migration following CpG administration, which could be restored by transfer of bone marrow-derived DC, because CpG had no major impact on the constitutive MHC class II Ag presentation of protein-derived Ag by lung tissue-derived DC. We conclude that CpG treatment can effectively impair the DC-mediated Ag transport from the lungs to the lymph nodes, resulting in reduced T cell activation and blunted airway inflammation.
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Affiliation(s)
- Hannelore Constabel
- Clinic for Immunology and Rheumatology, Hannover Medical School, Hannover, Germany
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Lee TP, Leu SJJ, Huang JC, Song YC, Jhou RS, Tang SJ, Sun KH. Anti-ribosomal phosphoprotein autoantibody triggers interleukin-10 overproduction via phosphatidylinositol 3-kinase-dependent signalling pathways in lipopolysaccharide-activated macrophages. Immunology 2009; 127:91-102. [PMID: 18778281 DOI: 10.1111/j.1365-2567.2008.02925.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Anti-ribosomal phosphoprotein autoantibodies have been shown to be significantly associated with multiple manifestations of systemic lupus erythematosus (SLE). High levels of interleukin-10 (IL-10) have been demonstrated to contribute to lupus susceptibility and severity. In this study, we investigated the molecular mechanisms of anti-ribosomal phosphoprotein monoclonal antibody (anti-P mAb)-induced autoimmune responses. Anti-P mAb promoted IL-10 overproduction in a dose- and time-dependent manner in both lipopolysaccharide (LPS)-activated RAW 264.7 cells and primary human macrophages. Anti-P mAb enhanced phosphorylation of Akt (PKB; protein kinase B), extracellular signal regulated kinase 1/2 (ERK1/2) and c-Jun NH2-terminal kinase 1/2 (JNK1/2), while phosphorylation of p38 remained unaltered. Furthermore, anti-P mAb decreased glycogen synthase kinase 3 (GSK3) activity and reduced the phosphorylation of I kappaB alpha in LPS-activated macrophages. The Syk, phosphatidylinositol 3-kinase (PI3K), protein kinase C (PKC), JNK and ERK signalling pathways involved in anti-P mAb-triggered IL-10 secretion were also confirmed using various pharmacological inhibitors. In addition, nuclear factor (NF)-kappaB had negative regulatory effects on anti-P mAb-triggered IL-10 secretion. Using reporter plasmids containing the nuclear factor binding sites of NF-kappaB, cAMP-enhanced activation protein 1 (AP-1), serum response element (SRE) or cyclic AMP response element (CRE), treatment of anti-P mAb led to activation of the corresponding factors that bind to the AP-1 site, SRE and CRE in the LPS-activated macrophages. Furthermore, by transfection with reporter plasmids bearing various lengths of the IL-10 promoter, the AP-1 binding site, SRE and CRE were shown to be required for anti-P mAb-induced effects. Collectively, our results provide a molecular model for anti-P mAb-induced IL-10 overproduction in LPS-activated macrophages, which may play a role in the pathogenesis of SLE.
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Affiliation(s)
- Tai-Ping Lee
- Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei, Taiwan, China
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