LncRNA LUCAT1 as a novel prognostic biomarker for patients with papillary thyroid cancer

被引：54
作者：
Luzon-Toro, B. [1 ,2 ]
Fernandez, R. M. [1 ,2 ]
Martos-Martinez, J. M. [3 ]
Rubio-Manzanares-Dorado, M. [3 ]
Antinolo, G. [1 ,2 ]
Borrego, S. [1 ,2 ]
机构：
[1] Univ Seville, Univ Hosp Virgen del Rocio, Dept Maternofetal Med Genet & Reprod, Inst Biomed Seville IBIS,CSIC, Seville, Spain
[2] Ctr Biomed Network Res Rare Dis CIBERER, Seville, Spain
[3] Univ Hosp Virgen del Rocio, Endocrine Surg Unit, Gen Surg Dept, Seville, Spain
来源：
SCIENTIFIC REPORTS | 2019年 / 9卷 / 1期
关键词：
LONG NONCODING RNA; CELL-CYCLE PROGRESSION; PROMOTES TUMORIGENESIS; POOR-PROGNOSIS; LUNG-CANCER; PROLIFERATION; EXPRESSION; METHYLATION; CARCINOMA; APOPTOSIS;
D O I：
10.1038/s41598-019-50913-7
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
In recent years, long non-coding RNAs have emerged as a novel class of regulators of cancer biological processes. While they are dysregulated in many cancer types, little is known about their expression and functional profiles. This study has been focused on the determination of the role of a specific lncRNA in papillary thyroid cancer. Quantitative reverse transcription PCR was performed to detect the expression levels of 84 lncRNAs in 61 papillary thyroid carcinoma tissues and their adjacent non-tumor tissues. The highest fold-change was obtained for lung cancer associated transcript 1 LUCAT1, and thus, this study determines the expression and biological implication of lncRNA LUCAT1 through different in vitro and ex vivo approaches in this tumor. LUCAT1 was specifically located at the cell nucleus in tumoral regions of patient tissues. Furthermore, LUCAT1 knockdown significantly reduced both cell proliferation and invasion ex vivo and induced cell-cycle arrest and apoptosis. These facts were corroborated by an enhanced expression of P21, P57, P53 and BAX, and a reduced expression of EZH2 and HDAC1. In addition, a significant decrease was observed on DNMT1 and NRF2 genes, helping to clarify the role of LUCAT1 on PTC. Our study reveals the involvement of LUCAT1 in PTC development, through acting in cell-cycle regulation, proliferation, epigenetic modifications through LUCAT1/CDK1/ EZH2/ P57/ P21/ HDAC1/ DNMT1/ P53/ BAX axis and apoptosis, via extrinsic pathway activating caspases. These findings indicate that LUCAT1 is maybe a potential therapeutic target and molecular biomarker for PTC.
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页数：12
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