Long noncoding RNA HIT000218960 promotes papillary thyroid cancer oncogenesis and tumor progression by upregulating the expression of high mobility group AT-hook 2 (HMGA2) gene

被引:53
作者
Li, Tao [1 ]
Yang, Xiao-dong [1 ]
Ye, Chun-xiang [1 ]
Shen, Zhan-long [1 ]
Yang, Yang [1 ]
Wang, Bo [1 ]
Guo, Peng [1 ]
Gao, Zhi-dong [1 ]
Ye, Ying-jiang [1 ]
Jiang, Ke-wei [1 ]
Wang, Shan [1 ]
机构
[1] Peking Univ, Peoples Hosp, Dept Surg Gastroenterol, Surg Oncol Lab, Beijing, Peoples R China
基金
中国国家自然科学基金;
关键词
HIT000218960; HMGA2; long noncoding RNA; oncogenesis; papillary thyroid cancer; NEOPLASTIC TRANSFORMATION; MALIGNANT PHENOTYPE; CARCINOMA; BIOMARKERS; PROTEINS; INVASION; BENIGN; TOOL; H19;
D O I
10.1080/15384101.2016.1261768
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
Accumulating evidence suggests that long noncoding RNAs (lncRNAs) play an important role in oncogenesis and tumor progression. However, our knowledge of lncRNAs in thyroid cancer is still limited. To explore the crucial lncRNAs involved in oncogenesis of papillary thyroid cancer (PTC), we acquired data of differentially expressed lncRNAs between PTC tissues and paired adjacent noncancerous thyroid tissues through lncRNA microarray. In the microarray data, we observed that a newly identified lncRNA, HIT000218960, was significantly upregulated in PTC tissues and associated with a well-known oncogene, high mobility group AT-hook 2 (HMGA2) gene. Both in normal thyroid tissues and PTC tissues, the expression of HIT000218960 was significantly positively correlated with that of HMGA2 mRNA. Knockdown of HIT000218960 in PTC cells resulted in downregulation of HMGA2. In addition, functional assays indicated that inhibition of HIT000218960 in PTC cells suppressed cell proliferation, colony formation, migration and invasion in vitro. Increased HIT000218960 expression in PTC tissues was obviously correlated with lymph node metastasis and multifocality, as well as TNM stage. Those findings suggest that HIT000218960 might acts as a tumor promoter through regulating the expression of HMGA2.
引用
收藏
页码:224 / 231
页数:8
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