A fabrication method of gold coated colloidosomes and their application as targeted drug carriers. Issue 14 (21st February 2018)

• Record Type: Journal Article
• Authors: Sun, Qian; Du, Yao; Hall, Elizabeth A. H.; Luo, Dong; Sukhorukov, Gleb B.; Routh, Alexander F.
• Is Part Of: Soft matter. Volume 14:Issue 14(2018)
• Page Start: 2594
• Page End: 2603
• Publication Date: 2018-02-21
• Subjects: Soft condensed matter -- Periodicals; 530.413
• DOI: 10.1039/c7sm02485a
• Languages: English
• ISSNs: 1744-683X

Abstract

Abstract : Colloidosomes have attracted considerable attention in recent years because of their potential applications in a range of industries, such as food, bioreactors and medicine. Abstract : Colloidosomes have attracted considerable attention in recent years because of their potential applications in a range of industries, such as food, bioreactors and medicine. However, traditional polymer shell colloidosomes leak low molecular weight encapsulated materials due to their intrinsic shell permeability. Here, we report aqueous core colloidosomes coated with a gold shell, which make the capsules impermeable. The shells can be ruptured using ultrasound. The gold coated colloidosomes are prepared by making an aqueous core capsule with a polymer shell and then adding HAuCl4, surfactant andl -ascorbic acid to form a second shell. We propose to use the capsules as drug carriers. The gold coated colloidosomes demonstrate a low cytotoxicity and after triggering, both encapsulated doxorubicin and broken gold fragments kill cancer cells. In addition, we set up a targeting model by modifying the gold shell colloidosomes using 4, 4′-dithiodibutyric acid and crosslinking them with proteins–rabbit immunoglobulin G (IgG). Label-free surface plasmon resonance was used to test the specific targeting of the functional gold shells with rabbit antigen. The results demonstrate that a new type of functional gold coated colloidosome with non-permeability, ultrasound sensitivity and immunoassay targeting could be applied to many medical applications.