Exosomes from the CRC cell lines HT-29 and SW480, perhaps via miRNA let-7d, inhibited the migration of CC-type chemokine receptor 2 (CCR2) monocytes (THP-1 cells) and the release of chemokine (C-C motif) ligand 7 (CCL7) from CAFs in vitro [62]. Here, CCL7 is linked to colorectal carcinoma.