Zhang, Y. H.; Liu, S. S.; Li, Y.; Li, H. Y.; Ma, X. Y.; Geng, W. T. Development of a exopolysaccharides/9-fluorenylmethyloxycarbonyl-phenylalanine hydrogel system for drug delivery. Polym. Bull. (in Chinese), 2024, 37(10), 1438–1447
Zhang, Y. H.; Liu, S. S.; Li, Y.; Li, H. Y.; Ma, X. Y.; Geng, W. T. Development of a exopolysaccharides/9-fluorenylmethyloxycarbonyl-phenylalanine hydrogel system for drug delivery. Polym. Bull. (in Chinese), 2024, 37(10), 1438–1447 DOI: 10.14028/j.cnki.1003-3726.2024.24.117.
Development of a Exopolysaccharides/9-Fluorenylmethyloxycarbonyl-phenylalanine Hydrogel System for Drug Delivery
This study introduces a new peptide-polysaccharide hydrogel for drug carriers
exploring its physical properties and drug release capabilities. Three variations of hydrogel EPS33
EPS50 and EPS66 with exopolysaccharides (EPS) contents of 33%
50% and 66%
respectively
were created using different ratios of 9-fluorenylmethoxycarbonyl-phenylalanine (Fmoc-F) to EPS. The influence of EPS on the structural
morphological
and mechanical characteristics of hydrogels was assessed using rheological
scanning electron microscopy
and textural analyses. The interaction between EPS and Fmoc-F within the hydrogels was examined by Fourier Transform Infrared (FTIR) spectroscopy. Furthermore
the effects of EPS on the biocompatibility
antioxidant properties
and drug delivery capabilities of the hydrogels were evaluated
via
hemolysis
free radical scavenging
drug loading
and
in vitro
release profiling using rhodamine B. The findings indicated that the Fmoc-F/EPS hydrogels with varying ratios of EPS displayed characteristics of gel-elastic solid behavior
with an observed increase in the network pore size with higher EPS content. The ―OH groups of EPS were found to establish hydrogen-bonding interactions within and between Fmoc-F molecules. Compared to Fmoc-F
the hardness of EPS66 decreased to 1.689 g
and the loading capacity of rhodamine B increased by 22.79% to 259.8 mg
/mL. The penetration depth through pig skin increased by 20.15% within 24 h
reaching 1 576.5 μm. Therefore
it was demonstrated that Bifidobacterium EPS can create a stable hydrogel with a larger network pore size by engaging in hydrogen bonding interactions with Fmoc-F
resulting in an enhanced hydrophilic drug loading capacity. By manipulating the EPS ratio
novel peptide-polysaccharide hydrogels can be developed with superior drug-loading capacity
antioxidant properties
release capabilities
and biosafety
making them suitable for applications in skin hydrophilic drug delivery.
关键词
自组装肽-多糖水凝胶药物载体胞外多糖药物缓释
Keywords
Self-assemblyPeptide-polysaccharide hydrogelsDrug carriersExopolysaccharidesSustained release of the drug
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