The present study was designed to explore whether exosomal lncRNA-KLF3-AS1 derived from human mesenchymal stem cells (hMSCs) can serve as a positive treatment for osteoarthritis (OA). hMSCs and MSC-derived exosomes (MSC-exo) were prepared for morphological observation and identification by transmission electron microscopy and flow cytometry. IL-1β-induced OA chondrocytes and collagenase-induced rat model of OA were established for the further experiments. Lentivirus-mediated siRNA targeting KLF3-AS1 was transfected into MSCs for silencing KLF3-AS1. The real-time quantitative PCR and western blotting analysis were performed to examine the mRNA and protein levels of type II collagen alpha 1 (Col2a1), aggrecan, matrix metalloproteinase 13 and runt-related transcription factor 2. Cell proliferation, apoptosis and migration were evaluated by CCK-8 assay, flow cytometry and transwell assay. HE (hematoxylin and eosin) staining and immunohistochemistry were used for histopathological studies. MSC-exo ameliorated IL-1β-induced cartilage injury. Furthermore, lncRNA KLF3-AS1 was markedly enriched in MSC-exo, and exosomal KLF3-AS1 suppressed IL-1β-induced apoptosis of chondrocytes. Further in vivo investigation indicated that exosomal KLF3-AS1 promoted cartilage repair in a rat model of OA. Exosomal KLF3-AS1 promoted cartilage repair and chondrocyte proliferation in a rat model of OA, which might be an underlying therapeutic target for OA.
-
Cover Image
Cover Image
In this issue Moreira and colleagues provide insights into leptin signaling and male reproductive health and ask if leptin signaling is the missing link between obesity and subfertility. The cover image shows a representation of leptin signaling pathways. Circulating leptin bounds to the long isoform of leptin receptor (LepRb), which activates JAK2 tyrosine kinase, triggering a cascade of downstream signaling pathways. For further details, see pages 3535–3560.
Exosomal KLF3-AS1 from hMSCs promoted cartilage repair and chondrocyte proliferation in osteoarthritis
Yubao Liu, Rui Zou, Zhen Wang, Chuanyang Wen, Fan Zhang, Fuqing Lin; Exosomal KLF3-AS1 from hMSCs promoted cartilage repair and chondrocyte proliferation in osteoarthritis. Biochem J 30 November 2018; 475 (22): 3629–3638. doi: https://doi.org/10.1042/BCJ20180675
Download citation file:
Sign in
Sign in to your personal account
Biochemical Society Member Sign in
Sign InSign in via your Institution
Sign in via your InstitutionGet Access To This Article
Follow us on Twitter @Biochem_Journal
Open Access for all
We offer compliant routes for all authors from 2025. With library support, there will be no author nor reader charges in 5 journals. Check here |
![]() View past webinars > |