CTNNB1 and gastric cancer: To determine if nuclear MYH9-associated CTNNB1 expression is involved in the biological functions of GC cells, we established four GC cell models transfected with negative control and vector (NC + vector), MYH9 shRNA3 and vector (shRNA3 + vector), MYH9 shRNA3 and MYH9 plasmid (shRNA3 + MYH9) or MYH9 shRNA3 and CTNNB1 plasmid (shRNA3 + CTNNB1).