MMP2 and neoplasm: constructed a multi‐sensitive liposome (ELTSL) responsive to enzyme, light, and temperature for controllable release of PS and the chemotherapeutic agent HOC (Table 2, entry 7).[175] Peptide‐polyethylene glycol (PEG) corona incorporated on the surface of liposomes is cleaved specifically by MMP‐2 overexpressed on tumor to enhance tumor penetration and cellular uptake of the liposome.