To check whether miR-873 could bind to XAF1 3' UTR in glioma cells, the cultured glioma cells were divided into 3 groups of (1) pGL3-promotor + NC mimic, (2) pGL3-XAF1 3' UTR + NC mimic, (3) pGL3-XAF1 3' UTR + miR-873 mimic. The gene discussed is XAF1; the disease is central nervous system cancer.