LncRNA MIR22HG promotes osteoarthritis progression via regulating miR-9-3p/ADAMTS5 pathway
| Autor: | Qin Li, Bo Yang, Hui Long, Zhenping Xiao |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0301 basic medicine
adamts5 mir22hg Bioengineering Apoptosis Applied Microbiology and Biotechnology Flow cytometry Extracellular matrix 03 medical and health sciences 0302 clinical medicine Chondrocytes Western blot Downregulation and upregulation Osteoarthritis medicine Humans Cells Cultured Cell Proliferation Gene knockdown Reporter gene medicine.diagnostic_test Chemistry Cell growth General Medicine Cell biology miR-9-3p MicroRNAs 030104 developmental biology Cartilage 030220 oncology & carcinogenesis RNA Long Noncoding ADAMTS5 Protein TP248.13-248.65 Biotechnology Research Article Research Paper Signal Transduction |
| Zdroj: | Bioengineered article-version (VoR) Version of Record Bioengineered, Vol 12, Iss 1, Pp 3148-3158 (2021) |
| ISSN: | 2165-5987 2165-5979 |
| Popis: | Dysregulation of long non-coding RNAs (lncRNAs) plays a fundamental role in the development and progression of osteoarthritis (OA), but the potential functions of lncRNAs in OA were not fully clarified. In the present work, we want to clarify the underlying functions and mechanisms of MIR22HG in OA. qRT-PCR was employed to detect the mRNA expression of MIR22HG, miR-9-3p, and ADAMTS5, while the protein expressions were measured using Western blot. The cell proliferation was examined through CCK8, while apoptosis was used in flow cytometry. Luciferase reporter assay and RNA immunoprecipitation (RIP) assays were undertaken to investigate the binding relationship among MIR22HG, ADAMTS5, and miR-9-3p. MIR22HG was significantly overexpressed in OA cartilages, OA chondrocytes and IL-1β-induced chondrocytes. Functionally, MIR22HG knockdown promoted cell proliferation, suppressed apoptosis, and contributed to downregulation of MMP13 and ADAMTS5 and upregulation of COL2A1 and ACAN in IL-1β-stimulated chondrocytes. Mechanistically, bioinformatic analysis indicated that MIR22HG may serve as a sponge for miR-9-3p and ADAMTS5 may be a potential targeted gene for miR-9-3p, which were subsequently verified through a dual-luciferase reporter assay. Moreover, rescue experiments showed that MIR22HG participated in the regulation of chondrocytes proliferation, apoptosis, and degradation of extracellular matrix via miR-9-3p/ADAMTS5 pathway. In conclusion, our findings illuminated that inhibition of MIR22HG ameliorated IL-1β-induced apoptosis and ECM degradation of human chondrocytes through miR-9-3p/ADAMTS5 pathway, which may provide a potentially promising target for OA treatment. Graphical Abstract |
| Databáze: | OpenAIRE |
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