Tumor-Derived DNA Promoted the Invasion of Hepatocellular Carcinoma Cells Through the CXCL12-CXCR4 Axis and the CCL21-CCR7 Axis, and Sinoline Hydrochloride Had a Suppressive Effect on the Invasion of Hepatocellular Carcinoma Cells. The gene discussed is CXCR4; the disease is hepatocellular carcinoma.