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作 者:Zequan Zhou Suohui Zhang Guozhong Yang Yunhua Gao
机构地区:[1]Key Laboratory of Photochemical Conversion and Optoelectronic Materials,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Beijing CAS Microneedle Technology Ltd,Beijing 102609,China
出 处:《Asian Journal of Pharmaceutical Sciences》2021年第5期612-622,共11页亚洲药物制剂科学(英文)
摘 要:Coated microneedles(MNs) are widely used for delivering biopharmaceuticals. In this study, a novel gel encapsulated coated MNs(GEC-MNs) was developed. The water-soluble drug coating was encapsulated with sodium alginate(SA) in situ complexation gel. The manufacturing process of GEC-MNs was optimized for mass production. Compared to the water-soluble coated MNs(72.02% ± 11.49%), the drug delivery efficiency of the optimized GEC-MNs(88.42% ± 6.72%) was steadily increased, and this improvement was investigated through in vitro drug release. The sustained-release of BSA was observed in vitro permeation through the skin. The rhIFN α-1 b GEC-MNs was confirmed to achieve biosafety and 6-month storage stability. Pharmacokinetics of rhIFN α-1 b in GEC-MNs showed a linearly dosedependent relationship. The AUC of rhIFN α-1 b in GEC-MNs(4.51 ng/ml ·h) was bioequivalent to the intradermal(ID) injection(5.36 ng/ml ·h) and significantly higher than water-soluble coated MNs(3.12 ng/ml ·h). The rhIFN α-1 b elimination half-life of GEC-MNs, soluble coated MNs, and ID injection was 18.16, 1.44, and 2.53 h, respectively. The complexation-based GECMNs have proved to be more efficient, stable, and achieve the sustained-release of watersoluble drug in coating MNs, constituting a high value to biopharmaceutical.
关 键 词:Coated microneedle Drug delivery system Sustained release Interferon alpha 1b Sodium alginate
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