Figure 3

Transfection of Let- 7b re- sensitization of the resistant cells. (A) U251R cells were transfected with mimics of miR-107, miR-125b, miR-203, Let-7b or scramble (SCR). Then their IC₅₀ to cisplatin was determined. U251 parental cells were used as control. (B) U251R cells were transfected with Let-7b mimics or scramble (SCR), and then the dose–response curves were plotted.