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Engineered pH-responsive Hydrazone-carboxylate complexes-encapsulated 2D matrices for Cathepsin-mediated apoptosis in cancer.
Journal of Biomedical Materials Research. Part A 2019 January 17
Spurred by the current advancements in engineering various intelligent nanoparticle-based drug delivery systems, conjugation of drugs with the stimuli-responsive molecular switches has become one of the most efficient approaches to deliver a drug cargo in spatiotemporal controlled fashions. In this study, we fabricated an innovative pH-triggered Hydrazone-carboxylate complex of doxorubicin (Dox), which was subsequently encapsulated in the layered double hydroxide (LDH) nanoparticles for effective cancer therapeutics. These two-dimensional (2D) biodegradable matrices efficiently delivered Dox by pH-triggered release in the acidic lysosomal environment and their subsequent escape to cytosol. Moreover, the delivered Dox molecules and high positively-charged surfaces of LDHs facilitated the cancer cell ablation via enhancing the cathepsins-mediated cell apoptosis assisted by free radical species generation. The critical advancements in the nanoparticle-based designs and substantial ablation of tumor cells through a free radical attack indicate that the designed pH-triggered drug composites can be used for efficient cancer therapeutics. This article is protected by copyright. All rights reserved.
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