LncRNA WT1-AS Knockdown Promotes Invasion and Migration of Triple Negative Breast Cancer MDA-MB-231 Cells

Objective To investigate the effect of LncRNA WT1-AS on the invasion and migration of triple-negative breast cancer MDA-MB-231 cells.

Methods qRT-PCR was used to detect the expression of WT1-AS and the efficiency of gene silencing in MDA-MB-231 cells. Transwell invasion test and scratch test were used to detect the invasion and migration of MDA-MB-231 cells; Western blot was used to detect the expression of E-cadherin, N-cadherin, Vimentin and Snail in MDA-MB-231 cells.

Results Compared with normal human mammary epithelial cells, the expression of WT1-AS in MDA-MB-231, MDA-MB-453 and MDA-MB-468 cells were significantly up-regulated. Knockdown of WT1-AS significantly reduced the invasion and migration abilities of MDA-MB-231 cells, the expression of E-cadherin was increased but N-cadherin, Vimentin and Snail expression were decreased.

Conclusion WT1-AS could promote the invasion and migration of triple-negative breast cancer cells MDA-MB-231 via regulating epithelial-mesenchymal transition.