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Fei Le, 1 Ping Luo, 2 Qian Ouyang, 3 Xiaoming Zhong 4 1Department of Head and Neck Surgery, Jiangxi Province Cancer Hospital, Nanchang City, Jiangxi Province, 330029, People’s Republic of China; 2Department of Surgical Oncology, Nanchang Third Hospital Surgical Oncology, Nanchang City, Jiangxi Province, 330002, People’s Republic of China; 3Department of Intensive Medicine, Jiangxi Province Cancer Hospital, Nanchang City, Jiangxi Province, 330029, People’s Republic of China; 4Department of Tumor Radiotherapy, Jiangxi Province Cancer Hospital, Nanchang City, Jiangxi Province, 330029, People’s Republic of ChinaCorrespondence: Xiaoming ZhongDepartment of Tumor Radiotherapy, Jiangxi Province Cancer Hospital, No. 519 Beijing East Road, Nanchang City, Jiangxi Province 330029, People’s Republic of ChinaTel +86 15979192617Email nlsxhwdccm24@163.comObjective: This study aimed to assessment the functions of lncRNA WT1-AS in papillary thyroid carcinoma (PTC).Methods: Expression levels of WT1-AS in PTC and non-tumor tissues from 66 PTC patients were measured and compared by performing qPCR and paired t test, respectively. Cell proliferation (CCK-8) assay was performed to evaluate the effects of the overexpression of WT1-AS, miR-203 and survivin on the proliferation of IHH-4 (a human PTC cell line) cells.Results: We found that WT1-AS was significantly downregulated in PTC and associated with clinical stages. In PTC tissues, WT1-AS was negatively correlated with survivin but positively correlated with miR-203. In PTC cells, WT1-AS overexpression led to significantly upregulated miR-203 and downregulated survivin. MiR-203 overexpression failed to affect WT1-AS but downregulated survivin. Cell proliferation assay showed that overexpression of WT1-AS and miR-203 led to decreased, while survivin overexpression led to increased proliferation of PTC cells. In addition, survivin overexpression attenuated the effects of WT1-AS and miR-203 overexpression.Conclusion: Therefore, WT1-AS may downregulate survivin by upregulating miR-203 in PTC to inhibit cancer cell proliferation.Keywords: WT1-AS, papillary thyroid carcinoma, survivin, miR-203 |
