Figure 2

miR-21 impacts breast cancer cell invasion in vitro. A, Relative miR-21expression was analyzed by Taqman PCR in four breast cancer cells. B, MDA-231 cells were transfected with miR21, anti-miR-21 or appropriate control oligonucleotides. Total RNA was isolated and analysed for miR-21 expression as in A. C, Cell invasion was quantified by Matrigel assay following transfection of MDA-231 cells with miR21, anti-miR-21 or appropriate control oligonucleotides. The data are standardized against control, and presented as relative cell invasion numbers. D, Relative miR-21 expression in MDA-435 cells transfected with anti-miR-21 or appropriate control oligonucleotides, determined as in A. E, Relative cell invasion numbers in MDA-435 cells transfected with anti-miR-21 or appropriate control oligonucleotides, as in C. The data are representative of three experiments. *, P < 0.05.