LINC00667 promotes Wilms' tumor metastasis and stemness by sponging miR-200b/c/429 family to regulate IKK-β

Cell Biology International
Pei LiuNing Sun

Abstract

Wilms' tumor, also known as nephroblastoma, is a kind of pediatric renal cancer. Previous studies have indicated that microRNAs (miRNAs) regulate various cancers progression. However, whether miR-200 family regulated Wilms' tumor progression remains to be elucidated. In our study, miR-200b/c/429 expression was downregulated in Wilms' tumor tissue samples from 25 patients. And data from three independent analyses of quantitative real-time polymerase chain reaction revealed that the expression of miR-200b/c/429 was downregulated in Wilms' tumor cell lines. Functionally, Cell counting kit-8 assay revealed that cell viability was reduced by overexpressing miR-200b/c/429. Transwell assay manifested that cell migration and invasion was hindered by miR-200b/c/429 overexpression. Sphere-forming and western blot assays demonstrated that miR-200b/c/429 overexpression suppressed the sphere formation ability. Mechanically, nuclear factor-κB (NF-κB) pathway was confirmed to be associated with Wilms' tumor progression; miR-200b/c/429 overexpression inactivated NF-κB pathway as miR-200b/c/429 was identified to target IκB kinase β (IKK-β), an NF-κB pathway-related gene. Moreover, miR-200b/c/429 was sponged by LINC00667 in Wilms' tumor cells. L...Continue Reading

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