In order to verify the effect of CXCL1 on tumor progression, a xenograft tumor growth assay was performed by injecting nude mice with cells transfected with CXCL1 overexpression (Lv-CXCL1) or knockdown (Lv-shCXCL1) lentivirus or negative control (Lv-NC). Here, CXCL1 is linked to neoplasm.