Effect of long non-coding RNA CCAT1 on invasion and migration of papillary thyroid cancer cells
10.3969.j.issn.1671-7856.2017.07.015
- VernacularTitle:长链非编码 RNA CCAT1对人乳头状甲状腺癌侵袭和迁移能力的影响
- Author:
Liyun LIU
;
Jian GONG
;
Jinheng XU
;
Zhiyong ZHANG
;
Yongxing CUI
- Keywords:
LncRNA;
siRNA CCAT1;
Human papillary thyroid cancer;
TPC-1;
Nthy-ori 3-1;
Cell invasion;
Cell migration
- From:
Chinese Journal of Comparative Medicine
2017;27(7):81-86
- CountryChina
- Language:Chinese
-
Abstract:
Objective To detect the expression of long non-coding RNA (lncRNA) CCAT1 in human papillary thyroid cancer, and to observe the effect of CCAT1 down-regulation on the invasion and migration of human papillary thyroid cancer.Methods The expression of CCAT1 was detected in human normal thyroid Nthy-ori 3-1 cells and human papillary thyroid cancer TPC-1 cells.CCAT1 siRNA plasmid was transfected into TPC-1 cells.The effect of CCAT1 down-regulation on cell invasion and migration was observed by Transwell chamber assay and scratch test, and the expressions of BRAF, MUC15 and RKIP proteins were detected by Western blot.Results The level of CCAT1 in human papillary thyroid cancer TPC-1 cells was significantly higher than that in human normal thyroid Nthy-ori 3-1 cells.CCAT1 down-regulation significantly inhibited the invasion and migration of TPC-1 cells.The Transwell invasion assay revealed that the number of migrated TPC-1 cells in the CCAT1 down-regulation group was significantly lower than that in the control group.The scratch test showed an increased distance between cells in the CCAT1 down-regulation group compared to the control group, suggesting a reduced cell motility.The expressions of BRAF and MUC15 proteins were decreased in the CCAT1 down-regulation group, while that of RKIP protein was increased.Conclusions The expression of CCAT1 in papillary thyroid cancer cells is significantly higher than that in normal human thyroid cells.Down-regulation of CCAT1 in papillary thyroid cancer cells may inhibit the cell invasion and migration by regulating the expression of BRAF, MUC15 and RKIP proteins.
