Abstract
Tumor surgery is often accompanied by tumor residue, tissue defects, bleeding, and bacterial infection, which can easily cause tumor recurrence, low survival rates, and delay wound healing. In this study, a multifunctional hydrogel (CA-AuAgNPs-Gel) was developed to prevent tumor recurrence and promote wound healing after tumor surgery in the absence of chemotherapeutic drugs and antibiotics. CA-AuAgNPs-Gel was prepared using iota carrageenan (CA)-capped gold‑silver nanoparticles (CA-AuAgNPs) and poloxamer 407 (F127), which exhibited good biocompatibility, injectability, and near-infrared (NIR) photothermal responsiveness. CA-AuAgNPs-Gel inhibited the growth of 4T1 breast cancer in situ and the recurrence of surgically resected B16F10 melanoma. It also effectively stopped bleeding and promoted tumor postsurgical wound healing in vivo. Importantly, CA-AuAgNPs-Gel induced tumor apoptosis via photothermal-induced hyperthermia and immunogenic cell death (ICD) under NIR laser radiation. Collectively, this hydrogel shows significant clinical application prospects for inhibiting tumor recurrence and promoting wound healing for postsurgical tumor treatment.
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