Journal
JOURNAL OF INORGANIC BIOCHEMISTRY
Volume 102, Issue 10, Pages 1921-1931Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jinorgbio.2008.06.016
Keywords
DNA conjugate; SNP detection; lanthanide; luminescence; metal complex
Funding
- 'Grant-in-Aid for JSPS Fellows [03J08683]
- Japan Society for the Promotion of Science [18759004]
- Ministry of Education, Culture, Sports, Science and Technology
- Grant-in-Aid for Scientific Research [20350038]
- Grants-in-Aid for Scientific Research [20350038, 03J08683, 18759004] Funding Source: KAKEN
Ask authors/readers for more resources
We present the facile technique of colorimetric SNP (single nucleotide polymorphism) analysis through DNA-templated cooperative complexation between a luminescent lanthanide ion (Ln(III): Tb(III) or Eu(III)) and two ODN (oligodeoxyribonucleotide) conjugates carrying a metal chelator. Families of complexane-type chelators and heterocyclic aromatic ligands were covalently attached to ODNs to form conjugates for application as capture and sensitizer probes. The sequences of the conjugates were designed so as to form a ternary tandem duplex with the target, where their auxiliary units face each other, providing a microenvironment to accommodate Ln(III). Only the combination of EDTA (ethylenediaminetetraacetic acid) conjugates and phen (1,10-phenanthroline) conjugates provided significant emissions with quantum yields of 3.3% and 1.5% for Tb(III) and Eu(III), respectively, in the presence of the target. Biallelic polymorphism in the TPMT (thiopurine S-methyltransferase) gene, wt/wt (G/G), mut/mut (C/C), and wt/mut (G/C), were distinguished as emissions in green, red, and yellow, respectively; the colors were identified even by the naked eye. (c) 2008 Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available