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Melanin-Ce6-Loaded Polydopamine Nanoparticles-Based Enhanced Phototherapy for B16 Melanoma Cancer Cells.
Nanotechnology 2024 April 10
Melanoma is one of the most aggressive and lethal types of cancer owing to its metastatic propensity and chemoresistance property. An alternative therapeutic option is Photodynamic and Photothermal Therapies (PDT/PTT), which employ near-infrared light to generate heat and Reactive Oxygen Species (ROS). As per previous reports, Melanin and its synthetic analogs (i.e., polydopamine nanoparticles) can induce near-infrared (NIR) light-mediated heat energy, thereby selectively targeting and ameliorating cancer cells. Similarly, Chlorin e6 (Ce6) also has high ROS generation ability and antitumor activity against various types of cancer. Based on this tenet, In the current study, we have encapsulated Mel-Ce6 in a Polydopamine (PDA) nanocarrier (MCP NPs) synthesized by the oxidation polymerization method. The hydrodynamic diameter of the synthesized spherical MCP NPs was 139 ± 10 nm. The MCP NPs, upon irradiation with NIR 690 nm laser for 6 minutes, showed photothermal efficacy of more than 50 °C. Moreover, the red fluorescence in the MCP NPs due to Ce6 can be leveraged for diagnostic purposes. Further, the MCP NPs exhibited considerable biocompatibility with the L929 cell line and nearly 70% ROS-mediated cytotoxicity on the B16 melanoma cell line after the laser exposure. Thus, the prepared MCP NPs could be a promising theragnostic agent for treating the B16 melanoma cancer.
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