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Ding S, Zhao P, Song S, Yang Y, Peng C, Chang X, Liu C. A novel enzyme-linked immunosorbent assay tool to evaluate plasma soluble CD226 in primary Sjögren's syndrome. Anal Biochem 2024; 692:115573. [PMID: 38768695 DOI: 10.1016/j.ab.2024.115573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/16/2024] [Accepted: 05/17/2024] [Indexed: 05/22/2024]
Abstract
CD226 is an important receptor constitutively expressed on most immune cells, performing vital functions in immune responses. However, the levels of soluble CD226 (sCD226) and its roles in primary Sjögren syndrome (pSS) remain unclear. In this study, we developed two novel mouse anti-human CD226 monoclonal antibodies (mAbs) and established a novel sandwich enzyme-linked immunosorbent assay (ELISA) system, which proved to be highly effective in detecting human sCD226. We then analyzed the expression of sCD226 in the plasma of pSS patients. Our results showed that the levels of sCD226 were significantly lower in patients with pSS compared to healthy controls. The significant decline was also observed in active group and the patients with high levels of IgG or positive anti-SSB. Additionally, reduced sCD226 was found to be negatively correlated with the disease activity of pSS and several clinical manifestations, including arthralgia, fatigue, decayed tooth and interstitial lung disease (ILD). Furthermore, receiver operator characteristics (ROC) curve analysis showed that sCD226 displayed outstanding capacity in discriminating pSS and predicting the disease activity. Altogether, plasma sCD226 emerges as a promising candidate for diagnostic markers in the context of pSS.
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Affiliation(s)
- Sisi Ding
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, 215000, China
| | - Ping Zhao
- Department of Rheumatology and Clinical Immunology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Saizhe Song
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, 215000, China
| | - Yanhong Yang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Soochow University, Suzhou, 215000, China
| | - Cheng Peng
- Department of Rheumatology, The First Affiliated Hospital of Soochow University, Suzhou, 215000, China
| | - Xin Chang
- Department of Rheumatology, The First Affiliated Hospital of Soochow University, Suzhou, 215000, China.
| | - Cuiping Liu
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, 215000, China.
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Kari S, Bucciarelli F, Angles T, Oster AC, Cauboue P, Laviolette K, Mougenot M, Morandi E, Bernard I, Pignolet B, Bost C, Thomas J, Nogueira L, Saoudi A, Liblau R, Astier AL. Increased levels of circulating soluble CD226 in multiple sclerosis. Mult Scler 2024; 30:654-663. [PMID: 38424741 DOI: 10.1177/13524585241234489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
BACKGROUND The glycoprotein CD226 plays a key role in regulating immune cell function. Soluble CD226 (sCD226) is increased in sera of patients with several chronic inflammatory diseases but its levels in neuroinflammatory diseases such as multiple sclerosis (MS) are unknown. OBJECTIVE To investigate the presence and functional implications of sCD226 in persons with multiple sclerosis (pwMS) and other neurological diseases. METHODS The mechanisms of sCD226 production were first investigated by analyzing CD226 surface expression levels and supernatants of CD3/CD226-coactivated T cells. The role of sCD226 on dendritic cell maturation was evaluated. The concentration of sCD226 in the sera from healthy donors (HD), pwMS, neuromyelitis optica (NMO), and Alzheimer's disease (AD) was measured. RESULTS CD3/CD226-costimulation induced CD226 shedding. Addition of sCD226 to dendritic cells during their maturation led to an increased production of the pro-inflammatory cytokine interleukin (IL)-23. We observed a significant increase in sCD226 in sera from pwMS and NMO compared to HD and AD. In MS, levels were increased in both relapsing-remitting multiple sclerosis (RRMS) and secondary-progressive multiple sclerosis (SPMS) compared to clinically isolated syndrome (CIS). CONCLUSION Our data suggest that T-cell activation leads to release of sCD226 that could promote inflammation and raises the possibility of using sCD226 as a biomarker for neuroinflammation.
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Affiliation(s)
- Saniya Kari
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITY), INSERM UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse Cedex 3, France
| | - Florence Bucciarelli
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITY), INSERM UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse Cedex 3, France
| | - Thibault Angles
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITY), INSERM UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse Cedex 3, France
| | - Anne-Cecile Oster
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITY), INSERM UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse Cedex 3, France
| | - Pauline Cauboue
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITY), INSERM UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse Cedex 3, France
| | - Karl Laviolette
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITY), INSERM UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse Cedex 3, France
| | - Madeline Mougenot
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITY), INSERM UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse Cedex 3, France
| | - Elena Morandi
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITY), INSERM UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse Cedex 3, France
| | - Isabelle Bernard
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITY), INSERM UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse Cedex 3, France
| | - Beatrice Pignolet
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITY), INSERM UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse Cedex 3, France
- CRC-SEP, Neurosciences Department, Toulouse University Hospital, Toulouse, France
| | - Chloé Bost
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITY), INSERM UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse Cedex 3, France
- Immunology Department Laboratory, Institut Fédératif de Biologie, Toulouse University Hospital Center, Toulouse, France
| | - Joelle Thomas
- CNRS UMR-5284, INSERM U-1314, MeLiS, Institut NeuroMyoGène, Universite de Lyon-Université Claude Bernard Lyon 1, Lyon, France
| | - Leonor Nogueira
- Laboratory of Cell Biology and Cytology, Toulouse University Hospital, Toulouse, France
| | - Abdelhadi Saoudi
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITY), INSERM UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse Cedex 3, France
| | - Roland Liblau
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITY), INSERM UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse Cedex 3, France
| | - Anne L Astier
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITY), INSERM UMR1291, CNRS UMR5051, Université Toulouse III, Toulouse Cedex 3, France
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Estaleen RA, Reilly CM, Luo XM. A double-edged sword: interactions of CX 3CL1/CX 3CR1 and gut microbiota in systemic lupus erythematosus. Front Immunol 2024; 14:1330500. [PMID: 38299151 PMCID: PMC10828040 DOI: 10.3389/fimmu.2023.1330500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 12/28/2023] [Indexed: 02/02/2024] Open
Abstract
Systemic lupus erythematosus (SLE) is a systemic chronic disease initiated by an abnormal immune response to self and can affect multiple organs. SLE is characterized by the production of autoantibodies and the deposition of immune complexes. In regard to the clinical observations assessed by rheumatologists, several chemokines and cytokines also contribute to disease progression. One such chemokine and adhesion molecule is CX3CL1 (otherwise known as fractalkine). CX3CL1 is involved in cell trafficking and inflammation through recognition by its receptor, CX3CR1. The CX3CL1 protein consists of a chemokine domain and a mucin-like stalk that allows it to function both as a chemoattractant and as an adhesion molecule. In inflammation and specifically lupus, the literature displays contradictory evidence for the functions of CX3CL1/CX3CR1 interactions. In addition, the gut microbiota has been shown to play an important role in the pathogenesis of SLE. This review highlights current studies that illustrate the interactions of the gut microbiota and CX3CR1 in SLE.
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Affiliation(s)
- Rana A. Estaleen
- Department of Biomedical Sciences and Pathobiology, Virgnia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
| | - Christopher M. Reilly
- Biomedical Sciences, Edward Via College of Osteopathic Medicine, Blacksburg, VA, United States
| | - Xin M. Luo
- Department of Biomedical Sciences and Pathobiology, Virgnia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
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