Vanessa Galván-Romero , Fernando Gonzalez-Salazar , Karla Vargas-Berrones , Francisco Castro Flores , Blanca Nohemí Zamora Mendoza , Denisse Atenea de Loera Carrera , Fidel Martínez Gutiérrez , Luz Eugenia Alcántara-Quintana , Rogelio Flores-Ramírez
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引用次数: 0
Abstract
This study aimed to synthesize, characterize, and evaluate molecularly imprinted polymers (MIPs) as drug delivery systems for naphthoquinone (NQ) derivatives. MIPs were synthesized using non-covalent bulk and co-precipitation polymerization methods, employing lactic acid (LA) and methacrylic acid (MA) as functional monomers and ethylene glycol dimethacrylate as a crosslinker. The quantification of 3-chloro-2-tyrosine-1,4-naphthoquinone (Cl-NQ-TYR) and 2-tyrosine-1,4-naphthoquinone (NQ-TYR) was performed using liquid chromatography with a diode array detector. The method demonstrated excellent linearity (R2 = 0.99) within the working range (0.5–10 mg L−1) and acceptable precision, with intra-day (CV: 0.62–2.14 % and 1–4.27 %) and inter-day (CV: 0.18–1.76 % and 0.62–5.46 %) variation for Cl-NQ-TYR and NQ-TYR, respectively. MIPs synthesized with MA exhibited the highest retention rates (99.53 % and 98.58 %). Electrostatic interactions influenced drug release properties, with zero charge points of 3.8 and 4.7, indicating that polymer ionization at higher pH values enhances drug release. All MIPs achieved imprinting factors above one (1.18–1.89), indicating that the molecular imprinting process was successful. The release profile showed an initial burst followed by sustained release over 24 h, with Cl-NQ-TYR MIP (MA, bulk) exhibiting the highest release rate, fitting best with the Korsmeyer-Peppas model. Antimicrobial activity against Escherichia coli (minimum inhibitory concentration, MIC: 12.5 μg mL −1) and Staphylococcus aureus (MIC: 3.12 μg mL−1) was attributed to released NQ derivatives. MIPs demonstrated biocompatibility with dermal fibroblasts, highlighting their suitability for medical applications. These results position MIPs as a promising platform for the safe and effective delivery of therapeutic agents in biomedical applications.
期刊介绍:
Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers.
Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.