Multiple thiol-anchor capped DNA-gold nanoparticle conjugates

Zhi Li, Rongchao Jin, Chad A. Mirkin*, Robert L. Letsinger

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

346 Scopus citations

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 languageEnglish (US)
Pages (from-to)1558-1562
Number of pages5
JournalNucleic acids research
Volume30
Issue number7
DOIs
StatePublished - 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

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