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Cartilage Tissue Engineering by Co-Transplantation of Chondrocyte Extracellular Vesicles and Mesenchymal Stem Cells, Entrapped in Chitosan-Hyaluronic Acid Hydrogel Publisher Pubmed



Heiranitabasi A1 ; Hosseinzadeh S4 ; Rabbani S2 ; Ahmadi Tafti SH2 ; Jamshidi K3 ; Soufizomorrod M1 ; Soleimani M1, 4
Authors
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Authors Affiliations
  1. 1. Department of Cell Therapy and Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
  2. 2. Research Center for Advanced Technologies in Cardiovascular Medicine, Cardiovascular Diseases, Research Institute, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Bone and Joint Reconstruction Research Center, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran
  4. 4. Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Source: Biomedical Materials (Bristol) Published:2021


Abstract

Mesenchymal stem cells (MSCs) on injectable hydrogels are mostly used to regenerate articular cartilage, which would have a variety of outcomes. Chondrocyte extracellular vesicles (EVs) have attracted many attentions for their chondrogenic differentiation capacity; however, the roles of EVs in both chondrogenic differentiation of MSCs and cartilage regeneration are poorly understood yet. In the current study, to investigate the differentiation effects of human articular chondrocyte EVs on adipose-derived MSCs, they were cultured in injectable chitosan-hyaluronic acid (CS-HA) hydrogel and then treated with chondrocyte EVs for 21 days. The continuous treatment of EVs performed on MSCs increased chondrogenic genes' expressions of SOX9 and COL2A1 and induced expression of Col II protein. In addition, glycosaminoglycans secretion was detected in the EV-treated MSCs after about 14 days. The therapeutic efficiency of this hydrogel and EVs was studied in a rabbit osteochondral defect model. MRI results revealed that the cartilage regeneration capacity of EV-treated MSCs with CS-HA hydrogel was greater than the untreated MSCs or the EV-treated MSCs without hydrogel. Moreover, histological results showed hyaline-like cartilage in the CS-HA/MSC and CS-HA/EV/MSC groups in the cartilage defect sites. These findings suggested that the chondrocyte-EVs and CS-HA hydrogel could provide the preferable niche for chondrogenic differentiation of MSCs and cartilage regeneration in osteoarthritis cartilage injuries. © 2021 IOP Publishing Ltd.
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