Oligonucleotide Microarrays: Immobilization of Phosphorylated Oligonucleotides on Epoxylated Surface
| Autor: | K.C. Gupta, Mahajan Sk, Pradeep Kumar |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Pharmacology
Reproducibility Hot Temperature Chromatography Molecular Structure Microarray Surface Properties Oligonucleotide Chemistry Organic Chemistry Oligonucleotides Biomedical Engineering Pharmaceutical Science Bioengineering Materials testing Hydrogen-Ion Concentration Standard methods Sensitivity and Specificity Molecular biology Oligonucleotide Microarrays Materials Testing Epoxy Compounds DNA microarray Oligonucleotide Array Sequence Analysis Biotechnology |
| Zdroj: | Bioconjugate Chemistry. 17:1184-1189 |
| ISSN: | 1520-4812 1043-1802 |
| DOI: | 10.1021/bc0601065 |
| Popis: | A facile and efficient method for direct immobilization of phosphorylated oligonucleotides on an epoxy-activated glass surface is described. The new immobilization strategy has been analyzed for its performance in DNA microarray under both microwave and thermal conditions. It reflects high immobilization efficiency ( approximately 23%), and signal-to-noise ratio ( approximately 98) and resulted in high hybridization efficiency ( approximately 36%) in comparison to those obtained with standard methods, viz., NTMTA ( approximately 9.76%) and epoxide-amine ( approximately 9.82%). The probes immobilized through the new strategy were found to be heat-stable, since the performance of microarray decreased by only approximately 7% after subjecting it to 20 PCR-like heat cycles, suggesting that the chemistry could be used in integrated PCR/microarray devices. The immobilization of probes following the proposed chemistry resulted in spots of superior quality in terms of spot morphology, spot homogeneity, and signal reproducibility. The constructed microarrays have been successfully used for the discrimination of nucleotide mismatches. In conclusion, these features make the new immobilization strategy ideal for facile, efficient, and cost-effective manufacturing of DNA microarrays. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|