MACC1 knockdown reduces cancer stem cell-like properties of 5FUR colon cancer cells. (A) Sphere forming ability was evaluated in the vehicle group cells and shRNA group cells (magnification, ×200). Bar graphs demonstrate the relative sphere numbers. (B) Protein levels of CD44, Nanog and CD133 were analyzed by western blotting in the vehicle group and shRNA group cells. Bar graphs demonstrate the relative protein expression levels. (C) mRNA levels of the aforementioned genes were analyzed by reverse transcription-quantitative polymerase chain reaction in the vehicle group and shRNA group cells. Bar graphs demonstrate the relative mRNA expression levels. *P<0.05, **P<0.01. 5-FUR, 5-fluouracil-resistant; CD, cluster of differentiation; MACC1, metastasis-associated colon cancer 1; Oct-4, octamer-binding transcription factor 4; shRNA, short hairpin RNA.