CXCL17 and hepatocellular carcinoma: HCC-derived exosomal lncRNA DLX6 antisense RNA 1 (DLX6-AS1) induces M2 macrophage polarization and promotes EMT by binding to miR-15a-5p to increase C-X-C motif chemokine ligand 17 (CXCL17) expression [144].