Abstract
This study constructed a biomass-modified mesoporous silica nanoparticle with enzyme-responsive and pH-responsive properties. The nanoparticles were used to evaluate the loading and release capacities of quercetin (QU). The multifunctional nanoparticles (MSN@CMCS-HA) were constructed by using hyaluronic acid (HA) and carboxymethyl chitosan (CMCS) as shells and mesoporous silica nanoparticles (MSN) as cores. The carrier's structure and properties were evaluated utilizing zeta, FTIR, TGA, XPS, XRD, BET, SEM, and TEM. The drug adsorption test revealed that the maximum equilibrium adsorption capacity of MSN@CMCS-HA for QU was 314.4 mg/g. In vitro drug release demonstrated that, under the influence of hyaluronidase (100 μg/mL) and pH of 5, the high drug release rate (63.73 %) was achieved. In addition, hemolysis and CCK8 tests confirmed the high biocompatibility of MSN@CMCS-HA. Consequently, MSN@CMCS-HA exhibited promising potential as an enzyme-responsive and pH-responsive drug carrier.
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