microRNA-124 inhibits stem-like properties and enhances radiosensitivity in nasopharyngeal carcinoma cells via direct repression of expression of JAMA.

Journal of Cellular and Molecular Medicine
Yunhong TianYawei Yuan

Abstract

Cancer stem cells (CSCs) are a source of tumour recurrence in patients with nasopharyngeal carcinoma (NPC); however, the function of microRNA-124 (miR-124) in NPC CSCs has not been clearly defined. In this study, we investigated the role of miR-124 in NPC CSCs. qRT-PCR was performed to measure miR-124 expression in NPC tissues and cell lines and the effects of miR-124 on stem-like properties and radiosensitivity of NPC cells measured. Luciferase reporter assays and rescue experiments were used to investigate the interaction of miR-124 with the 3'UTR of junctional adhesion molecule A (JAMA). Finally, we examined the effects of miR-124 in an animal model and clinical samples. Down-regulation of miR-124 was detected in cancer tissues and was inversely associated with tumour stage and lymph node metastasis. Overexpression of miR-124 inhibited stemness properties and enhanced radiosensitivity of NPC cells in vitro and in vivo via targeting JAMA. Up-regulation of miR-124 was correlated with superior overall survival of patients with NPC. Our study demonstrates that miR-124 can inhibit stem-like properties and enhance radiosensitivity by directly targeting JAMA in NPC. These findings provide novel insights into the molecular mechanism...Continue Reading

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Jan 22, 2019·Laboratory Investigation; a Journal of Technical Methods and Pathology·Yunhong TianYawei Yuan

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Citations

Sep 18, 2021·Molecular and Cellular Biochemistry·Kamila Czubak-ProwizorMaria Swiatkowska

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Methods Mentioned

BETA
flow cytometry
transfection
Assay
xenograft
xenografts
biopsy

Software Mentioned

SPSS

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