The ability to control drug loading and release is the most important feature in the development of medical devices. In this research, we prepared a functional nanocoating technology to incorporate a drug-release layer onto a desired substrate. The multilayer films were prepared using chitosan (CHI) and carboxymethyl cellulose (CMC) polysaccharides by the layer-by-layer (LbL) method. By using chemical cross-linking to change the inner structure of the assembled multilayer, we could control the extent of drug loading and release. The cross-linked multilayer film had a porous structure and enhanced water wettability. Interestingly, more of the small-molecule drug was loaded into and released from the non-cross-linked multilayer film, whereas more of the macromolecular drug was loaded into and released from the cross-linked multilayer film. These results indicate that drug loading and release can be easily controlled according to the molecular weight of the desired drug by changing the structure of the film.
Bibliographical noteFunding Information:
This research was supported by the grant from the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI); and the Ministry of Health & Welfare, Republic of Korea (Grants HI14C3266 and HI15C1653). This research was also supported by the Chung-Ang University Excellent Student Scholarship in 2016.
All Science Journal Classification (ASJC) codes
- Molecular Medicine
- Pharmaceutical Science
- Drug Discovery