Objective: The aim of this study was to construct light and temperature dual-sensitive micellar carriers loaded with doxorubicin (DOX) and gold nanorods (DOX-GNRs-PNIPAM@PEG-PLA, DAPP) for melanoma therapy.Methods: The DAPP self-assembled using fine-tuned physicochemical properties in water. The DAPP structure, temperature- and photo-sensitivity, drug-release, in-vitro serum stability, and cytotoxicity against melanoma B16F10 cells were evaluated in detail. The corresponding in-vitro and in-vivo therapeutic mechanisms were then evaluated using a B16F10-melanoma bearing BALB/c nude mouse model (B16F10).Results: The light and temperature sensitive micellar drug-delivery system assembled from block copolymer and gold nanorods exhibited a narrow particle size and size distribution, good biocompatibility, well-designed photo-temperature conversion, controlled drug release, and high serum stability. Compared with the free DOX- and PBS-treated groups, the cell endocytosis-mediated cytotoxicity and intra-tumor accumulation of DAPP was markedly enhanced by the NIR-light exposure and induced potent in-vivo tumor inhibitory activity.Conclusion: The design of DAPP, a dual-functional micellar drug-delivery system with temperature- and light-sensitive properties, offers a new strategy for skin-cancer therapy with a potent therapeutic index.

There were many studies evaluating the effect of picosecond (PS) lasers, but no meta‐analysis examined the effects of PS laser in the treatment of pigmentary disorders in Asians. The aim of this article was to review the before‐after effect of PS laser in Asians for the treatment of pigmentary disorders. PubMed, Embase, and Cochrane library were searched for articles published up to May 2020. The evaluations were summarized into a 4‐point scale that ranged from <25% (poor), 25%‐50% (fair), 50%‐75% (good), and 75%‐100% (excellent). Effect sizes (ESs) were calculated according to laser wavelengths and lesion types. There were two randomized controlled trials, three single‐arm trials, and three case series, with 200 patients. At 3 months after treatment, of all included patients, 3% (95%CI: 1%‐6%) were evaluated as poor or worse, 9% (95%CI: 2%‐21%) as fair, 29% (95%CI: 12%‐50%) as good, and 56% (95%CI: 28%‐83%) as excellent. The 532 and 1064, and 755 nm PS lasers had similar ESs across all four response groups. This meta‐analysis suggested that 56% of Asian patients who underwent PS laser for the treatment of pigmentary disorders were evaluated as “excellent” about the pigment clearance by a dermatologist at least 3 months after treatment.