Figure 5. Lnc-MKI67IP-3 could bind to let-7e as a miRNA sponge.
. (a) The predicted binding sequence of let-7e in lnc-MKI67IP-3 sequence. The solid line represents standard base pairing and strong interactions; and the dashed line represents non-standard base pairing and relatively weak interactions. (b) Upper panel: the sequence alignment between let-7e and mutant of let-7e binding sequence in lnc-MKI67IP-3. The bold letters indicated the mutated sequence. Lower panel: HUVECs were transfected alone or co-transfected with different combinations as shown in the figure for 24 hours. Then, the luciferase activity in each group was assayed. HUVECs transfected with non-insert reporter (empty) vector were used as control. *p < 0.05 vs. all other groups. All experiments were repeated five times independently.