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Δευτέρα 5 Ιουλίου 2021

LncRNA MSC‐AS1 motivates the development of melanoma by binding to miR‐302a‐3p and recruiting IGF2BP2 to elevate LEF1 expression

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Abstract

Melanoma is considered as the most common malignancy among skin cancers. The roles of many long non-coding RNAs (lncRNAs) have been clearly identified in multiple tumors. Nevertheless, lncRNA MSC antisense RNA 1 (MSC-AS1) has not been deeply investigated melanoma. In the present study, RT-qPCR and western blot analyses were used to measure the expression of RNAs and proteins. Functional and in vivo assays were implemented to detect the function of genes in melanoma. RNA pull down, RIP and luciferase reporter assays were applied for determining interactions between RNA and protein molecules. It was observed that MSC-AS1 and lymphoid enhancer binding factor 1 (LEF1) were remarkably up-regulated while microRNA-302a-3p (miR-302a-3p) down-regulated in melanoma cell lines. The silencing of MSC-AS1 hindered cell proliferation, migration and epithelial-mesenchymal transition (EMT) in vitro and tumor growth in vivo. Furthermore, MSC-AS1 regulated LEF1 expression through sponging miR-302a-3 p and recruiting insulin like growth factor 2 mRNA binding protein 2 (IGF2BP2). Eventually, LEF1 overexpression rescued cell progression impaired by MSC-AS1 knockdown. In summary, our research identified the MSC-AS1/miR-302a-3p/IGF2BP2/LEF1 axis in melanoma development, which indicated that MSC-AS1 is a potential biomarker in the treatment of melanoma.

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