Agilent striptease
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE2834 | GEO | 2005/08/20
SECONDARY ACCESSION(S): PRJNA92465
REPOSITORIES: GEO
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Project description:new and stripped chips Keywords: reuse of Affymetrix GeneChips U133 Plus 2.0
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Project description:Our genome wide analyses of microRNA expression profiles involve the hybridization of fluorescently labeled RNA samples to custom made, DNA microarrays based on the GAPSII coated slides. We describe a simple and effective method to regenerate such custom microarrays. Our protocol entails the use of a very low concentration of sodium hydroxide in a low salt buffer to strip RNA molecules from the arrays. The solution is also capable of removing DNA molecules hybridized to the slides, while preserving the slide coating and printed DNA probes. Slides can be stripped and reused at least twice without significantly sacrificing data quality. Keywords: expression study, new vs. stripped array comparison
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2010-05-19 | E-GEOD-10305 | biostudies-arrayexpress
Project description:Recently, long oligonucleotide (60-70mer) microarrays for two-color experiments have been developed and are gaining widespread use. In addition, when there is limited availability of mRNA from tissue sources, RNA amplification can and is being used to produce sufficient quantities of cRNA for microarray hybridization. Taking advantage of the selective degradation of RNA under alkaline conditions, we have developed a method to “strip” glass-based oligonucleotide microarrays that use fluorescent RNA in the hybridization, while leaving the DNA oligonucleotide probes intact and usable for a second experiment. Replicate microarray experiments conducted using stripped arrays showed high reproducibility, however, we found that arrays could only be stripped and reused once without compromising data quality. The intraclass correlation (ICC) between a virgin array and a stripped array hybridized with the same sample showed a range of 0.90-0.98, which is comparable to the ICC of two virgin arrays hybridized with the same sample. Using this method, once stripped oligonucleotide microarrays are usable, reliable, and should help to reduce costs. Keywords = Agilent microarray Keywords = Stripped arrays Keywords = Replicate reproducibility Keywords: other
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