Yang Yang, Yuezhi Zhang, Yanmei Fu, Shuanglian Li, Xiaolong Yin
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ANRIL regulates retinoblastoma progression via targeting autophagy by miR-328-3p/TSC1/ULK signaling.
Retinoblastoma is the most common primary intraocular malignancy of childhood. The aim of our study was to investigate the role and regulatory mechanism of the long non-coding RNA ANRIL in retinoblastoma. Here, our data demonstrated that ANRIL overexpression inhibited miR-328-3p expression, but promoted expression of autophagy-related proteins (LC3B, ATG5, and BECN1). Then we predicted the binding sites for ANRIL with miR-328-3p, and for miR-328 3p with TSC1/ULK2 3'-UTR, and confirmed the combination of miR-328-3p and ANRIL and TSC1/ULK2 3'-UTR. Importantly, the data showed that ANRIL overexpression promoted TSC1 and ULK2 expression, and inhibited the phosphorylation of mTOR. Finally, our results indicated that ANRIL overexpression facilitated Y79 cell proliferation and cisplatin-induced apoptosis. Our results indicated that ANRIL promoted the proliferation and cisplatin resistance of Y79 cells through activating autophagy by promoting TSC1/ULK2 ex- pression via acting as a miR-328-3p sponge.
期刊介绍:
Polish Journal of Pathology is an official magazine of the Polish Association of Pathologists and the Polish Branch of the International Academy of Pathology. For the last 18 years of its presence on the market it has published more than 360 original papers and scientific reports, often quoted in reviewed foreign magazines. A new extended Scientific Board of the quarterly magazine comprises people with recognised achievements in pathomorphology and biology, including molecular biology and cytogenetics, as well as clinical oncology. Polish scientists who are working abroad and are international authorities have also been invited. Apart from presenting scientific reports, the magazine will also play a didactic and training role.