LncRNA HOTTIP enhances human osteogenic BMSCs differentiation via interaction with WDR5 and activation of Wnt/β-catenin signalling pathway
| Autor: | Enhong Song, Ruiduan Liu, Qinghua Yang, Zihao Li, Hui Liu, Anmin Jin, Panyong Hu, Yiwen Hu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Transcriptional Activation
0301 basic medicine Biophysics Down-Regulation Mice Nude Biochemistry Small hairpin RNA 03 medical and health sciences 0302 clinical medicine Downregulation and upregulation Osteogenesis Transcription (biology) Gene expression Animals Humans WDR5 Wnt Signaling Pathway Molecular Biology Transcription factor Cells Cultured beta Catenin Chemistry Intracellular Signaling Peptides and Proteins Wnt signaling pathway Cell Differentiation Mesenchymal Stem Cells Cell Biology Hedgehog signaling pathway Up-Regulation Cell biology 030104 developmental biology 030220 oncology & carcinogenesis RNA Long Noncoding |
| Zdroj: | Biochemical and Biophysical Research Communications. 524:1037-1043 |
| ISSN: | 0006-291X |
| DOI: | 10.1016/j.bbrc.2020.02.034 |
| Popis: | To uncover the underlying molecular mechanism of long non-coding RNA in the osteogenic differentiation process of bone marrow mesenchymal stem cells (BMSCs), HOXA transcript at the distal tip (HOTTIP) was selected by using a lncRNA microarray assay. Results showed that HOTTIP was significantly upregulated during osteogenic differentiation of human BMSCs. Downregulation of HOTTIP by shRNA inhibited the osteogenic differentiation of BMSCs. Overexpression of HOTTIP by lentiviral vector promoted human BMSCs osteogenic differentiation by increasing the transcription of β-catenin. RIP assay and RNA pulldown assay confirmed the interaction between HOTTIP and WDR5, a transcription factor binding to the promoter of β-catenin. The interaction promoted the translocation of WDR5 into the nucleus and increased the transcription of β-catenin. Implanted HOTTIP-overexpressing BMSCs increased ectopic bone formation in nude mice. HOTTIP is a conservative long noncoding RNA that is essential for osteogenic differentiation of BMSC. HOTTIP enhances osteogenic differentiation via interaction with WDR5 and up-regulation of β-catenin gene expression, therefore activating Wnt/β-catenin signalling pathway. |
| Databáze: | OpenAIRE |
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