15/01/2026
๐ฅ Hot Off the Press!
๐ Gelatin-Based Rapid Blue Light-Irradiation In Situ Gelation Hydrogel Platform for Combination Therapy in Brain Tumors ๐
๐ฉโ๐ฌ Huang et al.
๐ฅ Highlights:
1. A gelatin methacryloyl (Gelatin MA) hydrogel was developed that achieves rapid gelation within 2-5 minutes under blue light irradiation, allowing for stable gel formation in situ within a complex physiological environment.
2. The hydrogel successfully encapsulating chemotherapy drugs (Epirubicin and Cisplatin) and a photothermal agent (polypyrrole-coated graphene oxide, PPy@GO). The system demonstrates sustained, stimulus-responsive drug release in tumor conditions (acidic pH and presence of collagenase) and generates significant heat upon near-infrared (NIR) laser irradiation.
3. In a mouse model of glioblastoma, the combination treatment using the drug-and-PPy@GO-loaded hydrogel along with radiotherapy (RT) and laser-induced photothermal therapy (PTT) resulted in complete tumor regression and significantly prolonged median survival to over 65 days, compared to 36 days for the control group, without notable systemic toxicity.
๐ข Implications:
1. The in situ gelling system offers a promising clinical strategy for localized, post-surgical adjuvant therapy for brain tumors. It can be applied directly into the tumor resection cavity to bypass the blood-brain barrier, delivering high local concentrations of therapeutic agents to eradicate residual cancer cells and prevent recurrence.
2. The ability to integrate chemotherapy, photothermal therapy, and radiotherapy into a single platform provides a powerful synergistic approach. This multi-pronged attack on cancer cells may enhance overall therapeutic efficacy and help overcome the drug resistance commonly observed in aggressive tumors like glioblastoma.
3. The platform's design is versatile and biocompatible, suggesting its potential for broader applications beyond brain cancer. It could be adapted as a localized drug delivery system for treating other solid tumors or for different biomedical purposes, such as in tissue engineering, where sustained release of agents is required.
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Background/Objectives: Glioblastoma (GBM) is a fatal tumor in the central nervous system (CNS) with a poor prognosis.