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Fantou A, Lagrue E, Laurent T, Delbos L, Blandin S, Jarry A, Beriou G, Braudeau C, Salabert N, Marin E, Moreau A, Podevin J, Bourreille A, Josien R, Martin JC. IL-22BP production is heterogeneously distributed in Crohn’s disease. Front Immunol 2022; 13:1034570. [PMID: 36311796 PMCID: PMC9612839 DOI: 10.3389/fimmu.2022.1034570] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 10/03/2022] [Indexed: 11/13/2022] Open
Abstract
Crohn’s disease (CD), a form of inflammatory bowel disease (IBD), is characterized by impaired epithelial barrier functions and dysregulated mucosal immune responses. IL-22 binding protein (IL-22BP) is a soluble inhibitor regulating IL-22 bioactivity, a cytokine proposed to play protective roles during CD. We and others have shown that IL-22BP is produced in IBD inflamed tissues, hence suggesting a role in CD. In this work, we extended the characterization of IL-22BP production and distribution in CD tissues by applying enzyme-linked immunosorbent assays to supernatants obtained from the culture of endoscopic biopsies of patients, and reverse transcription-quantitative polymerase chain reaction on sorted immune cell subsets. We reveal that IL-22BP levels are higher in inflamed ileums than colons. We observe that in a cell-intrinsic fashion, populations of mononuclear phagocytes and eosinophils express IL-22BP at the highest levels in comparison to other sources of T cells. We suggest the enrichment of intestinal eosinophils could explain higher IL-22BP levels in the ileum. In inflamed colon, we reveal the presence of increased IL-22/IL22BP ratios compared to controls, and a strong correlation between IL-22BP and CCL24. We identify monocyte-derived dendritic cells (moDC) as a cellular subtype co-expressing both cytokines and validate our finding using in vitro culture systems. We also show that retinoic acid induces the secretion of both IL-22BP and CCL24 by moDC. Finally, we report on higher IL-22BP levels in active smokers. In conclusion, our work provides new information relevant to therapeutic strategies modulating IL-22 bioactivity in CD, especially in the context of disease location.
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Affiliation(s)
- Aurélie Fantou
- Nantes Université, CHU Nantes, Inserm, Centre de Recherche Translationnelle en Transplantation et Immunologie, UMR 1064, Nantes, France
- CHU Nantes, Nantes Université, Laboratoire d’Immunologie, CIMNA, Nantes, France
| | - Eric Lagrue
- CHU Nantes, Nantes Université, Service d’Anatomie et Cytologie Pathologiques, Nantes, France
| | - Thomas Laurent
- Nantes Université, CHU Nantes, Inserm, Centre de Recherche Translationnelle en Transplantation et Immunologie, UMR 1064, Nantes, France
| | - Laurence Delbos
- Nantes Université, CHU Nantes, Inserm, Centre de Recherche Translationnelle en Transplantation et Immunologie, UMR 1064, Nantes, France
| | - Stéphanie Blandin
- Nantes Université, CHU Nantes, CNRS, Inserm, BioCore, US16, SFR Bonamy, Nantes, France
| | - Anne Jarry
- Nantes Université, Univ Angers, INSERM, CNRS, Immunology and New Concepts in ImmunoTherapy, INCIT, UMR 1302/EMR6001, Nantes, France
| | - Gaëlle Beriou
- Nantes Université, CHU Nantes, Inserm, Centre de Recherche Translationnelle en Transplantation et Immunologie, UMR 1064, Nantes, France
| | - Cécile Braudeau
- Nantes Université, CHU Nantes, Inserm, Centre de Recherche Translationnelle en Transplantation et Immunologie, UMR 1064, Nantes, France
- CHU Nantes, Nantes Université, Laboratoire d’Immunologie, CIMNA, Nantes, France
| | - Nina Salabert
- Nantes Université, CHU Nantes, Inserm, Centre de Recherche Translationnelle en Transplantation et Immunologie, UMR 1064, Nantes, France
- CHU Nantes, Nantes Université, Laboratoire d’Immunologie, CIMNA, Nantes, France
| | - Eros Marin
- Nantes Université, CHU Nantes, Inserm, Centre de Recherche Translationnelle en Transplantation et Immunologie, UMR 1064, Nantes, France
| | - Aurélie Moreau
- Nantes Université, CHU Nantes, Inserm, Centre de Recherche Translationnelle en Transplantation et Immunologie, UMR 1064, Nantes, France
| | - Juliette Podevin
- CHU Nantes, Institut des Maladies de l’Appareil Digestif, Nantes, France
| | - Arnaud Bourreille
- CHU Nantes, Institut des Maladies de l’Appareil Digestif, Nantes, France
| | - Régis Josien
- Nantes Université, CHU Nantes, Inserm, Centre de Recherche Translationnelle en Transplantation et Immunologie, UMR 1064, Nantes, France
- CHU Nantes, Nantes Université, Laboratoire d’Immunologie, CIMNA, Nantes, France
- *Correspondence: Jérôme C. Martin, ; Régis Josien,
| | - Jérôme C. Martin
- Nantes Université, CHU Nantes, Inserm, Centre de Recherche Translationnelle en Transplantation et Immunologie, UMR 1064, Nantes, France
- CHU Nantes, Nantes Université, Laboratoire d’Immunologie, CIMNA, Nantes, France
- *Correspondence: Jérôme C. Martin, ; Régis Josien,
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Fang J, Tong Y, Ji O, Wei S, Chen Z, Song A, Li P, Zhang Y, Zhang H, Ruan H, Ding F, Liu Y. Glycoprotein 96 in Peritoneal Dialysis Effluent-Derived Extracellular Vesicles: A Tool for Evaluating Peritoneal Transport Properties and Inflammatory Status. Front Immunol 2022; 13:824278. [PMID: 35222405 PMCID: PMC8866190 DOI: 10.3389/fimmu.2022.824278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 01/21/2022] [Indexed: 12/12/2022] Open
Abstract
Background Extracellular vesicles (EVs) from peritoneal dialysis effluent (PDE), containing molecules such as proteins and microRNAs (miRNAs), may be potential biological markers to monitor peritoneal function or injury. Peritoneal inflammation is an important determinant of peritoneal solute transport rate (PSTR). Thus, the aim of this study is to determine whether the specific proteins capable of evaluating the PSTR could be found in PDE-EVs, and explore the underlying mechanism for the association between PSTR and peritoneal inflammation. Methods Sixty patients undergoing peritoneal dialysis (PD) were divided into two groups: high/high average transport (H/A) group (PET >0.65) and low/low average transport (L/A) group (PET <0.65). EVs derived from PDE (PDE-EVs) were isolated by ultracentrifugation. Proteomic analysis was performed to explore the differentially expressed proteins and identify the potential biomarkers in PDE-EVs from the two groups, and we focused on glycoprotein 96 (GP96) as it could be involved in the inflammatory process. The expression of GP96 in PDE-EVs and inflammatory cytokines was quantified by real-time PCR and enzyme-linked immunosorbent assay. The infiltration of macrophages and neutrophils into the peritoneum was detected using immunohistochemistry in a PD rat model. Results The expression of PDE-EVs-GP96 was significantly higher in the H/A group, and was positively correlated with the PSTR and the level of the inflammatory factor interleukin (IL)-6. GP96-enriched EVs enhanced the secretion of proinflammatory cytokines IL-1β, IL-6, tumor necrosis factor (TNF)-α, and IL-8 in macrophages, which was reversed by a pharmacological GP96-specific inhibitor (PU-WS13). The GP96 inhibitor also reduced local peritoneal inflammation by decreasing the infiltration of inflammatory cells and levels of proinflammatory cytokines (IL-6 and TNF-α) and chemokines (CCL2, CXCL1, and CXCL2) in a PD rat model. Conclusions PDE-EVs-GP96 is a new promising tool to evaluate the status of peritoneal inflammation and PSTR, and the mechanism may be related to affecting the inflammatory properties of macrophages.
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Affiliation(s)
- Junyan Fang
- Division of Nephrology and Unit of Critical Nephrology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yan Tong
- Division of Nephrology and Unit of Critical Nephrology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ouyang Ji
- Division of Nephrology and Unit of Critical Nephrology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shan Wei
- Division of Nephrology and Unit of Critical Nephrology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhihao Chen
- Division of Nephrology and Unit of Critical Nephrology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ahui Song
- Division of Nephrology and Unit of Critical Nephrology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Pu Li
- Division of Nephrology and Unit of Critical Nephrology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yi Zhang
- Research and Development Center, Shanghai Applied Protein Technology Co., Ltd., Shanghai, China
| | - Huiping Zhang
- Research and Development Center, Shanghai Applied Protein Technology Co., Ltd., Shanghai, China
| | - Hongqiang Ruan
- Research and Development Center, Shanghai Applied Protein Technology Co., Ltd., Shanghai, China
| | - Feng Ding
- Division of Nephrology and Unit of Critical Nephrology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yingli Liu
- Division of Nephrology and Unit of Critical Nephrology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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