PCAT1 and colorectal cancer: To further explore the specific molecular mechanism of colorectal cancer exosomal PCAT1 in the development of colorectal cancer, we cocultured exosomes with T84 cells and then transfected the cells with sh-PCAT1 or cotransfected them with sh-PCAT1 + miR-329-3p inhibitor or sh-PCAT1 + oe-Netrin-1.