Abstract
Long non coding RNAs (lncRNAs) show an encouraging trend in regulating the proliferation of bone marrow-derived mesenchymal stromal cells (BMSCs). The present study investigated the role of lncRNA low expression in tumor (LET) in BMSCs proliferation. Our result showed that LET was down-regulated in rapidly proliferated BMSCs (P < 0.05). Suppression of LET promoted BMSCs proliferation and over-expression of LET inhibited BMSCs proliferation (P < 0.05). LET negatively regulated the expression of transforming growth factor β1 (TGF-β1) in BMSCs (P < 0.05). Knockdown of TGF-β1 reversed the LET suppression-induced BMSCs proliferation (P < 0.05). Moreover, knockdown of TGF-β1 alleviated the LET suppression-induced activation of Wnt/β-catenin pathway in BMSCs. Therefore, we drew the conclusion that LET suppression promoted BMSCs proliferation by up-regulating the expression of TGF-β1 and activating Wnt/β-catenin pathway.