open access

https://hdl.handle.net/2115/49727

Cytosine-phosphodiester-guanine oligodeoxynucleotide (CpG ODN)-capped hollow mesoporous silica particles for enzyme-triggered drug delivery

英語

Drug delivery

2011-10-21

Royal Society of Chemistry

Dalton Transactions

40(39)

10203-10208

We designed, for the first time, an enzyme-triggered drug delivery system that is based on cytosine-phosphodiester-guanine oligodeoxynucleotide (CpG ODN)-capped hollow mesoporous silica (HMS) particles as carriers. Fluorescein dye was used as a model drug, and the fluorescein loading, amino-grafting and CpG ODN capping were evaluated by UV/Vis analysis, zeta potential and N2 adsorption-desorption measurements and gel electrophoresis. The fluorescein loading capacity and CpG ODN capping amount were 37.7 and 39.6 μg mg, respectively at the weight ratio of 10 Dye/HMS-NH2/CpG ODN. Importantly, fluorescein release can be triggered by the addition of deoxyribonuclease I (DNase I) for CpG ODN degradation, and the release rate can also be controlled by changing the DNase I concentration. Therefore, it might be a promising controlled drug delivery system for application in the field of biomedicine and cancer therapy.

学術雑誌論文

Accepted Manuscript

Dalton Trans., 2011, 40, 10203-10208 - Reproduced by permission of The Royal Society of Chemistry (RSC)

1477-9226