Abstract
Improving the synergistic effect of radiofrequency ablation (RFA) and trans-artery chemo-embolization (TACE) remains the main challenge in interventional cancer therapy. The present study reports cisplatin-crosslinking poly(N-isoprylacrylamide-b-methyl acrylic acid) nanogels (Pt-PNA) based on the RF-thermal effect of cisplatin as the RF-responsive embolic nano-platform that acts via coordination bonding between Pt(II) ions and carboxyl, thereby triggering cell apoptosis, necrosis, and metastasis inhibition. Moreover, Pt-PNA might diffuse rapidly into tumor peripheral arteries and block the tumor blood supply facilitated by temperature-sensitive sol–gel transition, thereby achieving efficient TACE cancer therapy. The antitumor efficacy exhibited in vivo by Pt-PNA indicated that the radiofrequency-responsive Pt-PNA greatly improved the hypoxic tumor microenvironment after the TAE procedure, thereby inducing a favorable immune response and enhancing the synergistic antitumor effect of RFA and TACE.
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