Abstract
We report the synthesis of a novel trithiol-capped oligodeoxyribonucleotide and gold nanoparticle conjugates prepared from it. These DNA-gold nanoparticle conjugates exhibit substantially higher stability than analogs prepared from monothiol and cyclic disulfide-capped oligodeoxyribonucleotides, but comparable hybridization properties. A quantitative analysis of their stability under a range of conditions is provided. Significantly, this novel trithiol oligodeoxyribonucleotide can be used to stabilize particles >30 nm in diameter, which are essential for many diagnostic applications.
Original language | English (US) |
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Pages (from-to) | 1558-1562 |
Number of pages | 5 |
Journal | Nucleic acids research |
Volume | 30 |
Issue number | 7 |
DOIs | |
State | Published - Apr 1 2002 |
Funding
The authors acknowledge Mr Gang Lu and Ms Min Zhao for help in synthesizing oligonucleotides. C.A.M. acknowledges the AFOSR, ARO, DARPA and NSF for support of this research. R.L.L. acknowledges NIH (grant GM 57356) for the support of this research.
ASJC Scopus subject areas
- Genetics