In their study, Hou et al. [170] incorporated IR820 and catalase (CAT) into poly(lactic-co-glycolic acid) (PLGA) NPs, and to improve their ability to target tumour cells, hyaluronic acid (HA) was modified on the surface of the nanoparticles to construct HA-PLGA-CAT-IR820 nanoparticles (HCINPs). Here, CAT is linked to neoplasm.