Anti-Tyro3 IgG Associates with Disease Activity and Reduces Efferocytosis of Macrophages in New-Onset Systemic Lupus Erythematosus
Joint Authors
Liu, Honglei
Shi, Hui
Tan, Yun
Hou, Jiaqi
Wang, Fan
Zhou, Zhuochao
Xu, Aining
Teng, Jialin
Cheng, Xiaobing
Su, Yutong
Hu, Qiongyi
Chi, Huihui
Sun, Yue
Yang, Chengde
Ye, Junna
Li, Jian
Source
Journal of Immunology Research
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-11
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Background.
Systemic lupus erythematosus (SLE) is a disease characterized by the production of a large number of autoantibodies.
Defected phagocytosis of macrophage plays an important role in innate immunity in the pathogenesis of SLE.
Tyro3 is a receptor responsible for the recognition of apoptotic cells during efferocytosis by macrophages.
To investigate the role of Tyro3 receptor in macrophages’ efferocytosis of apoptotic cells in SLE, we aimed to reveal the clinical relevance and impact of Tyro3 autoantibody on SLE.
Methods.
The serum levels of IgG-type autoantibody against Tyro3 receptor were detected in new-onset, treatment-naïve SLE patients (n=70), rheumatoid arthritis (RA) (n=24), primary Sjögren’s Syndrome (pSS) (n=21), and healthy controls (HCs) (n=70) using enzyme-linked immunosorbent assay (ELISA).
The effects of purified Tyro3 autoantibody from SLE patients on the efferocytosis of human monocyte-derived macrophages were measured by flow cytometry and immunofluorescence.
Results.
The serum levels of IgG-type autoantibody against Tyro3 receptor were significantly elevated in patients with SLE compared to RA, pSS, and HCs (all p<0.0001).
The levels of anti-Tyro3 IgG were positively associated with the SLE disease activity index (SLEDAI) score (r=0.254, p=0.034), erythrocyte sedimentation rate (ESR) (r=0.430, p<0.001), C-reactive protein (CRP) (r=0.246, p=0.049), and immunoglobulin G (IgG) (r=0.408, p=0.001) and negatively associated with haemoglobin (Hb) (r=−0.294, p=0.014).
ROC curves illustrated that the anti-Tyro3 antibody could differentiate patients with SLE from HCs.
Furthermore, flow cytometry and immunofluorescence demonstrated that purified anti-Tyro3 IgG inhibited the efferocytosis of macrophages (p=0.004 and 0.044, respectively) compared with unconjugated human IgG.
Conclusions.
These observations indicated that autoantibody against Tyro3 was associated with disease activity and could impair efferocytosis of macrophages.
It might be a potential novel disease biomarker and might be involved in the pathogenesis of SLE.
American Psychological Association (APA)
Zhou, Zhuochao& Xu, Aining& Teng, Jialin& Wang, Fan& Tan, Yun& Liu, Honglei…[et al.]. 2020. Anti-Tyro3 IgG Associates with Disease Activity and Reduces Efferocytosis of Macrophages in New-Onset Systemic Lupus Erythematosus. Journal of Immunology Research،Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1186991
Modern Language Association (MLA)
Zhou, Zhuochao…[et al.]. Anti-Tyro3 IgG Associates with Disease Activity and Reduces Efferocytosis of Macrophages in New-Onset Systemic Lupus Erythematosus. Journal of Immunology Research No. 2020 (2020), pp.1-10.
https://search.emarefa.net/detail/BIM-1186991
American Medical Association (AMA)
Zhou, Zhuochao& Xu, Aining& Teng, Jialin& Wang, Fan& Tan, Yun& Liu, Honglei…[et al.]. Anti-Tyro3 IgG Associates with Disease Activity and Reduces Efferocytosis of Macrophages in New-Onset Systemic Lupus Erythematosus. Journal of Immunology Research. 2020. Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1186991
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1186991