CXCL6 and glioblastoma: Meanwhile, to explore the effect of CXCL6 on cell proliferation, invasion, migration, and CFA, we silence CXCL6 in GBM cell line U87MG which showed relative higher endogenous CXCL6 expression using siRNAs (siRNA1, siRNA2, and siRNA3) and selected siRNA1 showing better silence effect for further functional experiments (Fig. S11A,B).