ST8SIA4 and cholangiocarcinoma: Cholangiocarcinoma cells were transfected with miR-144-5p, miR-451a mimics or inhibitors together with ST8SIA4 expression plasmids or siRNA-3# to further assess whether miR-144-5p and miR-451a can restrain the cholangiocarcinoma cell proliferation, invasion, and migration by regulating ST8SIA4.