Treatment of microvascular invasion in hepatocellular carcinoma with drug‐loaded nanocomposite platform under synergistic effect of magnetic field/near‐infrared light

Abstract Despite progress in clinical treatment, microvascular invasion (MVI) remains a major factor for frequent recurrence and metastasis of hepatocellular carcinoma (HCC) after liver resection and surgery. Thus, this study constructed a target nanoplatform (αCD97‐USPIO‐Au‐DDP) with magnetic field/near‐infrared (NIR) light response using ultrasmall superparamagnetic iron oxide‐gold nanoporous spheres (USPIO‐Au) as multifunctional nanocarrier. Anticancer drug cisplatin (DDP) was loaded, and specifically expressed CD97 protein in MVI was taken as the therapeutic target. The αCD97‐USPIO‐Au‐DDP showed favorable photothermal and stable properties under the NIR light at 808 nm wavelength. As suggested by in vitro and in vivo research, this composite nanopreparation could effectively reduce damage to normal organs and showed good biocompatibility. Excellent magnetic targeting function of nanocarrier and modification of αCD97 strengthened accumulation of composite nanodrug in tumor to inhibit tumor growth. This system may have important ramifications for treatment of MVI in HCC.