CXCR2 and colonic neoplasm: Examination of the basal levels of CXCR1 and CXCR2 expression in the NCI-60 panel of colon cancer cell lines using the genomic and pharmacologic tool Cell Miner [35] showed that HCT116 cells and SW620 cells (derived from metastasis of SW480) express negligible or no CXCR1 or CXCR2 (Figure 7A), and CPT treatment did not induce changes in the mRNA expression of CXCR1 in SW480 cells (Figure 7B).