Background: The function of miR-138-5p as an oncogenic factor has been reported in certain cancers. This study was performed to analyze the potential involvement of miR-138-5p in kidney renal clear cell carcinoma (KIRC).
Methods: The Cancer Genome Atlas (TCGA) database was used to explain the expression of miR-138-5p in cancer and paired non-cancer tissues of KIRC patients. Subsequently, miR-138-5p expression in KIRC tissues and cell lines, as well as that in normal tissues and normal renal tubular epithelial cell line, was detected. Artificial overexpressing of miR-138-5p was applied to observe its effect on the biological behaviors of KIRC cells. The target mRNA of miR-138-5p, SIN3A, was predicted and validated. Altered expression of miR-138-5p and SIN3A was introduced to confirm their functions in KIRC proliferation and invasion.
Results: We showed that miR-138-5p was down-regulated in tumor tissues of KIRC patients comparing to adjacent healthy tissues and linked to dismal prognosis in patients. miR-138-5p could hinder KIRC proliferation and invasion, while artificial overexpression of SIN3A led to reversed trends. SIN3A was a target mRNA of miR-138-5p. miR-138-5p and SIN3A together affect the activation of the Notch signaling pathway.
Conclusion: This study evidenced that up-regulated miR-138-5p inhibits proliferation and invasion of KIRC cells involving the transcription of SIN3A and the following regulation of the Notch signaling pathway.
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| http://dx.doi.org/10.1002/jcla.23766 | DOI Listing |
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