1. Long Non-Coding RNA NLIPMT as a Tumor Suppressor and Inhibitor of Cell Proliferation and Metastasis in Papillary Thyroid Carcinoma
- Author
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Biyu Diao, Rongrong Miao, Baodan Zhang, Yingying Hu, Xiaoqu Hu, Hanqian Zeng, Yangjun Cai, Fen Zhang, and Dandan Song
- Subjects
0301 basic medicine ,Gene knockdown ,endocrine system diseases ,Cell growth ,Vimentin ,Biology ,medicine.disease ,Long non-coding RNA ,Metastasis ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,Oncology ,Downregulation and upregulation ,Cell culture ,030220 oncology & carcinogenesis ,Gene expression ,Cancer research ,biology.protein ,medicine - Abstract
Introduction Gene expression association studies of tumor samples have uncovered several long non-coding RNAs (lncRNAs) closely related to various types of cancer. Several lncRNAs have been reported to play essential roles in the progression of papillary thyroid carcinoma (PTC). Novel lncRNA inhibiting proliferation and metastasis (lnc-NLIPMT) is a known regulator of mammary cell proliferation and motility, but its involvement in PTC is unclear. Materials and methods We investigated the role of lnc-NLIPMT in PTC by quantitative real-time polymerase chain reaction (qRT-PCR) on various PTC tissue samples and cell lines. We assessed the effects of overexpression or knockdown of lnc-NLIPMT on the proliferation, migration, and invasion of PTC cells using CCK-8, cell clone formation, and transwell assays. Changes in the expression of N-cadherin and vimentin were detected by immunoblotting. Results Our results revealed a downregulation of the expression of lnc-NLIPMT in PTC and a negative correlation between lnc-NLIPMT expression and tumor size (P=0.006). Overexpression of lnc-NLIPMT in TPC-1 and B-CPAP cells significantly suppressed cell proliferation, migration, and invasion, while lnc-NLIPMT knockdown had the opposite effect. In addition, lnc-NLIPMT played an important role in the regulation of the expression of N-cadherin and vimentin. Conclusion lnc-NLIPMT inhibits cell proliferation and metastasis of PTC cells and is a potential diagnostic and prognostic biomarker in PTC.
- Published
- 2020
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