Biomineralized Polydopamine Nanoparticle-Based Sodium Alginate Hydrogels for Delivery of Anti-serine/Threonine Protein Kinase B-Rapidly Accelerated Fibrosarcoma siRNA for Metastatic Melanoma Therapy.

Malignant melanoma, as a highly aggressive skin cancer, is strongly associated with mutations in serine/threonine protein kinase B-RAF (BRAF, where RAF stands for rapidly accelerated fibrosarcoma). Targeted therapy with anti-BRAF small interfering RNA (siBRAF) represents a crucial aspect of metastatic melanoma treatment. In this study, an injectable hydrogel platform based on sodium alginate (SA), with multifunctions of photothermal and Ca-overload cell apoptosis, was explored as a siBRAF carrier for metastatic melanoma therapy.

CaCO-assistant synthesis of pH/near-infrared light-responsive and injectable sodium alginate hydrogels for melanoma synergistic treatment.

Melanoma is an aggressive tumor located in skin with high rates of recurrence and metastasis. Due to the limited traditional therapies, the development of novel strategies against melanoma is urgently quested. To reduce the side effects of traditional administration ways and amplify the killing effect, an injectable sodium alginate (SA)-based hydrogels were developed, in which CaCO/polydopamine nanoparticles (CaCO/PDA NPs) were embedded for the synergistic photothermal/calcium ions interference therapy of melanoma.

Ferrous iron-induced formation of glycyrrhizic acid hydrogels for Staphylococcus aureus-infected wound healing.

Severe skin wound healing is mainly hindered by bacterial infection and uncontrolled inflammatory reaction. As a wound dressing, multifunctional hydrogel is expected to offer the potential possibility for overcoming current barriers in wound therapeutics. Herein, a natural drug molecule (glycyrrhizic acid, GA) and metal ion (Fe) were used to achieve the metal coordination-induced gelation.

Metal ions/nucleotide coordinated nanoparticles comprehensively suppress tumor by synergizing ferroptosis with energy metabolism interference.

Background: Ferroptosis holds promise as a potential tumor therapy by programming cell death with a hallmark of reactive oxygen species (ROS)-induced lipid peroxidation. However, vigorous energy metabolism may assist tumors to resist oxidative damage and thus weaken the effects of ferroptosis in tumor treatment.

Results: Herein, a bifunctional antitumor platform was constructed via coordinated interactions between metal ions and nucleotides to synergistically activate ferroptosis and interrupt energy metabolism for tumor therapy.