Expanded CD1c+CD163+ DC3 Population in Synovial Tissues Is Associated with Disease Progression of Osteoarthritis

The mechanisms underlying osteoarthritis (OA) have recently been hypothesized to involve a dysfunctional immune system. In this study, we collected synovium, synovial fluid (SF), and peripheral blood from 21 patients. Mononuclear cells were characterized using FCM. H&E staining and mIHC histolog...

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Published inJournal of Immunology Research Vol. 2022; pp. 1 - 11
Main Authors Qiu, Guowei, Zhong, Sheng, Xie, Jun, Feng, Hui, Sun, Songtao, Gao, Chenxin, Xu, Xirui, Kang, Bingxin, Xu, Hui, Zhao, Chi, Ran, Lei, Xinyu, A., Xu, Bo, Meng, Xiaohui, Meng, Lu, Zhang, Xiaoming, Xiao, Lianbo
Format Journal Article
LanguageEnglish
Published New York Hindawi 01.08.2022
Hindawi Limited
Wiley
Subjects
Antibodies
Arthritis
B cells
Bone surgery
Cartilage
CD163 antigen
CD1c antigen
CD8 antigen
Cytokines
Dendritic cells
Development and progression
Enzyme-linked immunosorbent assay
Ethylenediaminetetraacetic acid
Flow cytometry
Immune system
Immunology
Inflammation
Joint replacement surgery
Leukocytes (mononuclear)
Lymphocytes
Lymphocytes T
Osteoarthritis
Pathogenesis
Patients
Peripheral blood mononuclear cells
Software
Synovial fluid
Synovium
T cells
Tumor necrosis factor-α
China
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Summary:The mechanisms underlying osteoarthritis (OA) have recently been hypothesized to involve a dysfunctional immune system. In this study, we collected synovium, synovial fluid (SF), and peripheral blood from 21 patients. Mononuclear cells were characterized using FCM. H&E staining and mIHC histological assessment of synovium were performed. Cytokine levels in the SF were measured using ELISA. We observed similar frequencies of immune cells in the synovium and SF, which were enriched in DCs. Notably, CD1c+CD163+ DC3s were expanded in the synovium and SF. Furthermore, we found that DC3s were primarily located within the ectopic lymphoid-like structure (ELLS) in close proximity to CD8+ T cells. Finally, the level of TNF-α and IL12p70 in the SF correlated with the severity of OA. These data suggest that OA is an immune system-related disease and that DC3s may play an active role in OA progression by promoting ELLS formation and inflammatory responses.
Bibliography:ObjectType-Article-1
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Academic Editor: Zhipeng Xu
ISSN:2314-8861
2314-7156
2314-7156
DOI:10.1155/2022/9634073