1. Micro-/Nano-Structures on Biodegradable Magnesium@PLGA and Their Cytotoxicity, Photothermal, and Anti-Tumor Effects.
- Author
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Zhou W, Zhang Y, Meng S, Xing C, Ma M, Liu Z, Yang C, and Kong T
- Subjects
- Animals, Antineoplastic Agents chemistry, Antineoplastic Agents pharmacology, Cell Line, Tumor, Cell Proliferation drug effects, Cell Survival drug effects, Female, HeLa Cells, Humans, Magnesium chemistry, Magnesium pharmacology, Mice, Microfluidic Analytical Techniques, Microspheres, Nanoparticles, Particle Size, Phototherapy, Xenograft Model Antitumor Assays, Antineoplastic Agents administration & dosage, Breast Neoplasms therapy, Magnesium administration & dosage, Polylactic Acid-Polyglycolic Acid Copolymer chemistry
- Abstract
The size and structural control of particulate carriers for imaging agents and therapeutics are constant themes in designing smart delivery systems. This is motivated by the causal relationship between geometric parameters and functionalities of delivery vehicles. Here, both in vitro and in vivo, the controlling factors for cytotoxicity, photothermal, and anti-tumor effects of biodegradable magnesium@poly(lactic-co-glycolic acid (Mg@PLGA) particulate carriers with different sizes and shell thicknesses are investigated. Mg@PLGA microspheres fabricated by microfluidic emulsification are shown to have higher Mg encapsulation efficiency, 87%, than nanospheres by ultrasonic homogenization, 50%. The photothermal and anti-tumor effects of Mg@PLGA spheres are found to be dictated by their Mg content, irrelevant to size and structural features, as demonstrated in both in vitro cell assays and in vivo mice models. These results also provide important implications for designing and fabricating stimuli-responsive drug delivery vehicles., (© 2020 Wiley-VCH GmbH.)
- Published
- 2021
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