TY  - EJOU
AU  - Wang, Bao-Juan 
AU  - Ding, Hong-Wei 
AU  - Ma, Guo-An 

TI  - Long Noncoding RNA PVT1 Promotes Melanoma Progression  via Endogenous Sponging miR-26b
T2  - Oncology Research

PY  - 2018
VL  - 26
IS  - 5
SN  - 1555-3906

AB  - Melanoma is an extremely aggressive malignant skin tumor with a high mortality. Various long noncoding 
RNAs (lncRNAs) have been reported to be associated with the oncogenesis of melanoma. The purposes of this 
study were to investigate the potential role of lncRNA PVT1 in melanoma progression and to explore its possible mechanisms. A total of 35 patients who were diagnosed with malignant melanoma were enrolled in this 
study. Expression of PVT1 was significantly upregulated in melanoma tissue and was associated with a poor 
prognosis. Loss-of-function experiments showed that PVT1 knockdown markedly suppressed the proliferation activity, induced cell cycle arrest at the G<sub>0</sub>/G<sub>1</sub> phase, and enhanced the apoptosis of melanoma cell lines. 
Bioinformatics analysis and dual-luciferase reporter assay revealed that PVT1 directly bound to miR-26b, 
which had been verified to be a tumor suppressor in melanoma. Moreover, further functional rescue experiments revealed that PVT1 knockdown could observably reverse the tumor-promoting role of the miR-26b 
inhibitor. Overall, our study demonstrates the oncogenic role of PVT1 as a miR-26b sponge, possibly providing 
a novel therapeutic target for melanoma.
KW  - Melanoma; Long noncoding RNAs (lncRNAs); PVT1; miR-26b; Sponge

DO  - 10.3727/096504017X14920318811730