Abstract
Recently, microRNA-498 (miR-498) plays important effect in human cancers. Nonetheless, the role of miR-498 is still unclear in gastric cancer (GC). Therefore, this study was designed to investigate the function of miR-498 in GC tissues and cell lines (SGC-7901, BGC-823, MGC-803). The expressions of miR-498 and BMI-1 were examined in GC tissues via the RT-qPCR assay. The function of miR-498 was investigated through MTT and transwell assays. The relationship between miR-498 and BMI-1 was testified by dual luciferase assay. The protein expression of EMT markers, AKT pathway markers and BMI-1 was measured through western blot. The expression of miR-498 was decreased in GC tissues which predicted poor prognosis of GC patients. Moreover, functional analyses show that the overexpression of miR-498 inhibited the progression of GC. Furthermore, BMI-1 was a direct target of miR-498 which was upregulated in GC. Especially, the upregulation of BMI-1 recovered the suppressive effect of miR-498 in GC. In addition, miR-498 inhibited the metastasis and proliferation of GC cells through blocking EMT and AKT pathway. MiR-498, by targeting BMI-1, presents a plethora of tumor suppressor activities in GC cells.
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The datasets used and/or analyzed during the present study are available from the corresponding author on reasonable request.
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This study was approved by the Institutional Ethics Committee of The Affiliated Hospital of Qingdao University (Qingdao, China) and was performed according to the guidelines of the Declaration of Helsinki. Informed consent was obtained from all patients.
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Dong You, Dawei Wang, Peiji Liu are the co-first authors.
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You, D., Wang, D., Liu, P. et al. MicroRNA-498 inhibits the proliferation, migration and invasion of gastric cancer through targeting BMI-1 and suppressing AKT pathway. Human Cell 33, 366–376 (2020). https://doi.org/10.1007/s13577-019-00313-w
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DOI: https://doi.org/10.1007/s13577-019-00313-w