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Updated: Jan 1, 2026

Large-Scale Preparation of Synovial Fluid Mesenchymal Stem Cell-Derived Exosomes by 3D Bioreactor Culture
Published on: July 26, 2022
Primary chondrocyte exosomes mediate osteoarthritis progression by regulating mitochondrion and immune reactivity
Lin Zheng1,2,3, Yiyun Wang1,2, Pengcheng Qiu1,2
1Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Medical College of Zhejiang University, Hangzhou, PR China.
Abstract:
Aim: We aimed to investigate the proteomics of primary chondrocyte exosomes and the effect of exosomes in osteoarthritis (OA) treatment. Materials & methods: We isolated exosomes from primary chondrocytes cultured in normal (D0) and inflammatory environments induced by IL-1β and determined the proteomics of these exosomes. Next, we investigated what effect and mechanism D0 chondrocytes exosomes have in OA treatment. Results: There were more proteins that belonged to mitochondrion and were involved in immune system processes in D0 exosomes. Notably, intra-articular administration of D0 exosomes successfully prevented the development of OA. D0 chondrocyte exosomes could restore mitochondrial dysfunction and polarize macrophage response toward an M2 phenotype. Conclusion: Our findings demonstrated that primary chondrocyte exosomes are efficient in OA treatment.
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