Fabrication of cross-linked alginate beads using electrospraying for adenovirus delivery

Hongkwan Park, Pyung Hwan Kim, Taewon Hwang, Oh Joon Kwon, Tae Joon Park, Sung Wook Choi, Chae Ok Yun, Jung Hyun Kim

Research output: Contribution to journalArticle

40 Citations (Scopus)


Cross-linked alginate beads containing adenovirus (Ad) were successfully fabricated using an electrospraying method to achieve the protection and release of Ad in a controlled manner. An aqueous alginate solution containing Ad was electrosprayed into an aqueous phase containing a cross-linking agent (calcium chloride) at different process variables (voltages, alginate concentrations, and flow rates). Alginate beads containing Ad were used for transduction of U343 glioma cells and the transduction efficiency of the alginate beads was measured by quantification of gene expression using a fluorescence-activated cell sorter at different time points. In vitro results of gene expression revealed that the Ad encapsulated in the alginate beads with 0.5 wt% of alginate concentration exhibited a high activity for a long period (over 7 days) and was released in a sustained manner from the alginate beads. The Ad-encapsulating alginate beads could be promising materials for local delivery of Ad at a high concentration into target sites.

Original languageEnglish
Pages (from-to)417-425
Number of pages9
JournalInternational Journal of Pharmaceutics
Issue number2
Publication statusPublished - 2012 May 10

All Science Journal Classification (ASJC) codes

  • Pharmaceutical Science

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