HTR4b mRNA levels after overexpression of several miRNAs in Colo320 cells analysed by qPCR. Relative expression analysis of HTR4b mRNA levels after transfection (72 h) with different miRNAs (miR-15b, miR-16, miR-497, miR-15b/16/497, miR-103) and a negative control miR (neg. ctrl. miR). Values are means ± SEM of three to four independent experiments and were normalised to SDHA. *p < 0.05; ***p < 0.001. Unpaired t-test.