CXCL12 and neoplasm: MiR-125b-5p seems to function both as a tumor suppressor miR in induced L-OHP-resistant HCT8 cells, or conversely as an oncomiR (oncogenic miR) when it is upregulated in HCT116 and SW620 cell lines in response to treatment with C-X-C motif chemokine ligand 12 (CXCL12), leading to chemoresistance.