Amino acid–intercalated layered double hydroxide core @ ordered porous silica shell as drug carriers: Design and applications

A nanoparticle-based drug delivery system is first established by mesoporous silica encapsulating amino acid–intercalated layered double hydroxide (LDH) to construct nanocomposites AA-LDH@MS. The amino acids including phenylalanine (Phe) and histidine (His) with aromatic groups are intercalated into...

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Bibliographic Details
Published in:Journal of materials research 2019-11, Vol.34 (22), p.3747-3756
Main Authors: Wang, Jianqiang, Zhang, Wenpei, Hao, Lifeng, Sun, Jun, Zhang, Wenqi, Guo, Cheng, Mu, Yuhan, Ji, Weiting, Yu, Caiyuan, Yuan, Fangming
Format: Article
Language:English
Subjects:
Amino acids
Applied and Technical Physics
Biocompatibility
Biomaterials
Biomedical Materials
Drug carriers
Drug delivery systems
Fourier transforms
Histidine
Hydroxides
Inorganic Chemistry
Interlayers
Materials Engineering
Materials research
Materials Science
Nanocomposites
Nanoparticles
Nanotechnology
Phenylalanine
Regenerative Medicine and Drug Delivery
Silicon dioxide
Surfactants
Sustained release
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Summary:A nanoparticle-based drug delivery system is first established by mesoporous silica encapsulating amino acid–intercalated layered double hydroxide (LDH) to construct nanocomposites AA-LDH@MS. The amino acids including phenylalanine (Phe) and histidine (His) with aromatic groups are intercalated into LDH as the cores Phe-LDH and His-LDH. These nanocomposites AA-LDH@MS display multispaces of the interlayer spaces of LDH and porous channels of mesoporous silica to load drugs. Moreover, amino acid molecules provide the interaction sites to improve effectively loading amounts of drugs. 5-Fluorouracil (5-FU) is used as the cargo molecules to observe the delivery in vitro. The results indicate that the maximum loading amounts of drugs are up to 392 mg/g at 60 °C for 12 h in the nanocomposite Phe-LDH@MS. All the nanocomposites exhibit the sustained release of 5-FU at pH 4 and pH 7.4. The Korsmeyer–Peppas model is used to fit the kinetic plot of the drug release in vitro, which concludes that 5-FU release from AA-LDH@MS belongs to Fickian diffusion.
ISSN:0884-2914
2044-5326
DOI:10.1557/jmr.2019.324