摘要
Pulmonary drug delivery has attracted increasing attention in biomedicine,and porous particles can effectively enhance the aerosolization performance and bioavailability of drugs.However,the existing methods for preparing porous particles using porogens have several drawbacks,such as the inhomogeneous and uncontrollable pores,drug leakage,and high risk of fragmentation.In this study,a series of cyclodextrin-based metal-organic framework(CD-MOF)particles containing homogenous nanopores were delicately engineered without porogens.Compared with commercial inhalation carrier,CDMOF showed excellent aerosolization performance because of the homogenous nanoporous structure.The great biocompatibility of CD-MOF in pulmonary delivery was also confirmed by a series of experiments,including cytotoxicity assay,hemolysis ratio test,lung function evaluation,in vivo lung injury markers measurement,and histological analysis.The results of ex vivo fluorescence imaging showed the high deposition rate of CD-MOF in lungs.Therefore,all results demonstrated that CD-MOF was a promising carrier for pulmonary drug delivery.This study may throw light on the nanoporous particles for effective pulmonary administration.
基金
supported by the National Natural Science Foundation of China(Grant No.81803466)
the Research and Development Plan for Key Areas in Guangdong Province(Grant No.2019B020204002,China)
the National Science and Technology Major Program(Grant No.2017zx09101001,China)
Natural Science Foundation of Guangdong Province(Grant No.2018A030310095,China)
