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Article Abstract
Hollow natural polysaccharide microcapsules have broad applications in drug delivery field due to their excellent biocompatibility and drug loading efficiency. In this paper, pH/near-infrared (NIR) dual-responsive microcapsules composed of hyaluronic acid (HA), chitosan (CS) and hollow CuS (HA/CS/HA@CuS) had been fabricated via a layer-by-layer (LbL) approach. The negative charge, rough surface and hollow structure of microcapsules are very favorable for loading positively charged DOX. As a result, hollow microcapsules display a high drug loading efficiency of 91.15 %. The variation in the degree of amino ionization at different pH values leads to the changes in the electrostatic force between CS/HA multilayers, resulting in the structural change in microcapsules. Therefore, microcapsules exhibit significant pH-responsive drug release properties. In addition, hollow CuS nanoparticles with excellent photothermal conversion ability are capped on the multilayer surface, enabling microcapsules to exhibit excellent NIR-responsive drug delivery properties. Overall, hyaluronic acid/chitosan-based hollow microcapsules with notable pH/NIR dual-responsiveness have been prepared, which can be used as a potential drug carrier for controlled drug delivery and photothermal chemical combination therapy.
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| http://dx.doi.org/10.1016/j.ijbiomac.2024.136050 | DOI Listing |
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