DRD2 and cancer: Moreover, D2DR is not only distributed in central nervous system tumors but also in other tumors with endocrine functions (e.g., breast,[23] kidney,[24] lung,[25] and colorectal cancers[26]) and has been used as a new target for cancer stem cell therapy.[8c] Therefore, PMVS‐P nanomaterials can also be similarly extended for use in cancer stem cell‐specific tumoricidal therapy of these tumors, which is a significant direction for future research.