CXCL12 and neoplasm: Compared to the oe‐NC+M2pep‐Cs NPs/Plerixafor group, CXCR4 mRNA expression in the tumor tissues of the oe‐CXCR4+M2pep‐Cs NPs/Plerixafor group was significantly upregulated; while, CXCL12 mRNA expression remained unchanged (Figure 7B).