CD142-positive synovial fibroblasts drive meniscus destruction in rheumatoid arthritis

Hao Sun, Xiaobin Lin, Fangzhou Liu, Yingbin Zhang, Jianda Ma, Zhencheng Huang, Junming Huang, Lutian Yao, Mengyuan Zhang, Meiyi Chen, Jie Xu (), Yulong Wei (), Lie Dai () and Ruofan Ma ()
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Hao Sun: Sun Yat-sen University
Xiaobin Lin: Sun Yat-sen University
Fangzhou Liu: Sun Yat-sen University
Yingbin Zhang: Sun Yat-sen University
Jianda Ma: Sun Yat-sen University
Zhencheng Huang: Sun Yat-sen University
Junming Huang: Sun Yat-sen University
Lutian Yao: China Medical University
Mengyuan Zhang: Sun Yat-sen University
Meiyi Chen: Sun Yat-sen University
Jie Xu: Sun Yat-sen University
Yulong Wei: Huazhong University of Science and Technology
Lie Dai: Sun Yat-sen University
Ruofan Ma: Sun Yat-sen University

Nature Communications, 2025, vol. 16, issue 1, 1-17

Abstract: Abstract Previous evidence suggest bone and cartilage damage is the main pathogenesis of rheumatoid arthritis joint destruction. However, the role of meniscus usually has not been thoroughly explored. Here, we identify CD142+ synovial fibroblasts as a subset located at sublining layer in normal and osteoarthritis synovium, which is increased and distributed at lining layer in rheumatoid arthritis synovium. Injection of CD142+ fibroblasts into DBA/1 male mice’s knee destructs meniscus but has slight effect on cartilage. ABCC4 is highly expressed in CD142+ fibroblasts, whose blockage by MK571 attenuates CD142+ fibroblasts-induced meniscus destruction through cAMP/PKA signaling. Long-term follow-up of rheumatoid arthritis cohort indicates that enriched CD142+ fibroblasts at lining layer are a risk factor for severe knee joint destruction and eventually undergo total knee arthroplasty. Our results demonstrate CD142+ fibroblasts as an indicator to assess prognosis and a therapeutic target to inhibit meniscal destruction, thereby alleviating rheumatoid arthritis knee joint damage.

Date: 2025
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DOI: 10.1038/s41467-025-61842-7

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