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Mismatch oligonucleotides in yeast

ABSTRACT: Tiled 10kb region centered around ACT1 gene (YFL039C, CHROMOSOME 6 @ coords 48760-59195), double-stranded, 36mers at 1bp spacing, with mismatches and deletions; also tiled 6 genes of interest (YBL092W, YGR155W, YOL040C, YOR312C, YMR242C, YLR229C), coding strand only, 36mers at 1bp spacing, with some mismatches and deletions Keywords: Mismatch hybridization experiment Tiled perfect match and various designs of mismatch oligonucleotide for several yeast genes. Goal was to observe the influence of various MM types on hybridization behavior in yeast and compare it to human (see related slide).

ORGANISM(S): Saccharomyces cerevisiae

SUBMITTER: Mark Gerstein

PROVIDER: E-GEOD-13174 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Mismatch oligonucleotides in human and yeast: guidelines for probe design on tiling microarrays.

Seringhaus Michael M Rozowsky Joel J Royce Thomas T Nagalakshmi Ugrappa U Jee Justin J Snyder Michael M Gerstein Mark M

BMC genomics 20081231

<h4>Background</h4>Mismatched oligonucleotides are widely used on microarrays to differentiate specific from nonspecific hybridization. While many experiments rely on such oligos, the hybridization behavior of various degrees of mismatch (MM) structure has not been extensively studied. Here, we present the results of two large-scale microarray experiments on S. cerevisiae and H. sapiens genomic DNA, to explore MM oligonucleotide behavior with real sample mixtures under tiling-array conditions.<h ...[more]

PMID: 19117516

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Project description:Sensitivity to Interferon (IFN) is determined by a complex coordination of genetic and environmental factors. A previous experiment using two renal cancer cell lines differing markedly in their response to IFN were analyzed for their ISG profiles in order to determine gene expression changes associated with IFN sensitivity (Holko M, Williams BR. Functional annotation of IFN-alpha-stimulated gene expression profiles from sensitive and resistant renal cell carcinoma cell lines. J Interferon Cytokine Res 2006 Aug;26(8):534-47). Higher and more persistent expression of a subset of ISGs was noted in the IFN-sensitive RCC1 cells when compared with the relatively IFN-insensitive ACHN cells. A subset of Interferon stimulated genes (ISGs) whose sustained expression correlates with heightened IFN sensitivity were analyzed for functional and sequence similarities. This subset predominately contains genes involved in transcription, and most were found to contain in their promoters binding sites for promyleocytic zinc finger factor (PLZF), a transcriptional repressor identified by virtue of its role in the etiology of Acute Promyelocytic Leukemia (APL). Analysis of gene expression in a lymphoid cell line with inducible PLZF expression reveals that increased expression of immune system related genes including ISGs, depends on PLZF expression. Chromatin Immunoprecipitation assays show direct association between PLZF and in silico identified PLZF binding sites in ISG promoters. This study reveals a novel interaction between PLZF and IFN signaling. A time course of IFNa treatment (0, 6, 16, 24 hrs) was performed in tetetracycline induced PLZF overexpressing and control U937T:PLZF45 cells. For the 0 hr time point, PLZF overexpression (Cy5) was compared with control cells (Cy3). For the 6, 16, and 24 hr IFN treated time points, treated RNA was labelled with Cy5 and non-IFN treated RNA with Cy3. Each IFN treatment time point was performed on control and PLZF-overexpressing cells respectively.

Dataset Information

Mismatch oligonucleotides in yeast

Publications

Mismatch oligonucleotides in human and yeast: guidelines for probe design on tiling microarrays.

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