Effect of exosomal UCA1 on esophageal cancer cells. (A) Expression of UCA1 in EC18 and Kyse140 cells treated with exosomes derived from NEEC cells transfected with UCA1-expressing plasmids (UCA1-Exo) or negative control plasmids (Control- Exo). (B, C) Cell viability of EC18 and Kyse140 cells treated with exosomes derived from NEEC cells transfected with UCA1-expressing plasmids (UCA1-Exo) or negative control plasmids (Control- Exo). (D) Invasive ability of EC18 and Kyse140 cells treated with exosomes derived from NEEC cells transfected with UCA1-expressing plasmids (UCA1-Exo) or negative control plasmids (Control- Exo). Scale bar = 50 nm. (E) Migratory ability of EC18 and Kyse140 cells treated with exosomes derived from NEEC cells transfected with UCA1-expressing plasmids (UCA1-Exo) or negative control plasmids (Control- Exo). Scale bar = 50 nm. (F) Colony formation ability of EC18 and Kyse140 cells treated with exosomes derived from NEEC cells transfected with UCA1-expressing plasmids (UCA1-Exo) or negative control plasmids (Control- Exo). (*) denotes the difference between groups (P<0.05). Each experiment had a minimum of three replicates per treatment group.