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MiR-186 inhibits cell proliferation and invasion in human cutaneous malignant melanoma

1 Department of Dermatology, Xinxiang Central Hospital, Xinxiang, Henan, China
2 Department of Head and Neck, and Breast Surgery, Xinxiang Central Hospital, Xinxiang, Henan, China

Correspondence Address:
Bei-bei Su,
Department of Dermatology, Xinxiang Central Hospital, 56 Jinsui Avenue, Xinxiang Henan-453 000
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Source of Support: None, Conflict of Interest: None

Aims: MicroRNA-186 (miR-186) has been shown to be involved in various types of cancer. The purpose of this study was to investigate the expression level and functional role of miR-186 in human cutaneous malignant melanoma cells. Subjects and Methods: Expression of miR-186 was analyzed in human cutaneous malignant melanoma (CMM) cell lines SK-MEL-1, G-361, A375 and A875, and human normal epidermal melanocytes cell line HEMn-LP by quantitative reverse transcription polymerase chain reaction (qRT-PCR). Additionally, the functional role of miR-186 on melanoma cells was investigated by transfection of miR-186 mimic followed by analyses of cell proliferation, apoptosis, and metastasis. Results: We found that the expression levels of miR-186 were decreased in CMM cell lines compared with normal epidermal melanocytes cell line. Moreover, overexpression of miR-186 inhibited cells proliferation through abrogating the G 1 -S transition, and reduced cells migration and invasion. Conclusions: Our findings suggested that miR-186 exhibit an inhibitory effect on CMM cell proliferation, migration, and invasion; thus, may serve as a potential therapeutic target for human CMM intervention.

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