Calibration array
Ontology highlight
ABSTRACT:
ORGANISM(S): Cottus Cottus rhenanus Cottus perifretum
PROVIDER: GSE93063 | GEO | 2017/07/01
SECONDARY ACCESSION(S): PRJNA359764
REPOSITORIES: GEO
Similar Datasets
Project description:Picky is an optimal microarray design software which designed the NSF Rice 45K Array. A series of microarray experiments using a one-chip version of this array were conducted to validate as well as to develop a calibration method for Picky designed microarrays. Synthesized samples with known content were used in the validation. PICKY designed microarrays were found to be highly reliable. The PICKY predicted closest nontarget information was used to quantitatively calibrate the best microarray hybridization conditions using the same microarrays and synthesized samples. Because this method works under most microarray protocols, it is generally applicable in any lab that uses PICKY as their microarray design tool. The associate publication provides more details about the experiment design and discussions about its results. Keywords: Microarray Calibration
2009-10-22 | GSE14717 | GEO
Project description:Picky is an optimal microarray design software which designed the NSF Rice 45K Array. A series of microarray experiments using a one-chip version of this array were conducted to validate as well as to develop a calibration method for Picky designed microarrays. Synthesized samples with known content were used in the validation. PICKY designed microarrays were found to be highly reliable. The PICKY predicted closest nontarget information was used to quantitatively calibrate the best microarray hybridization conditions using the same microarrays and synthesized samples. Because this method works under most microarray protocols, it is generally applicable in any lab that uses PICKY as their microarray design tool. The associate publication provides more details about the experiment design and discussions about its results. Keywords: Microarray Calibration 20 probes on the NSF Rice Oligonucleotide 45K Array grouped into two sets were chosen for microarray calibration. 40 antisense oligonucleotides were synthesized based on the target and closest nontarget gene sequences for each of the chosen probes. 5 different experiments were designed with varied concentrations and dye labeling schemes for the 40 antisense oligos. Two hybridizations were conducted for each experiment at each calibration temperature. 7 sets of experiments were conducted at 70, 60, 55, 53, 50, 48 and 45 degree C using a total of 70 microarrays. Each microarray is scanned at multiple PMT settings to obtain multiple data files. After inspection, weak signal results at 70 degree C and a few contaminated microarray results were discarded. Altogether, 165 valid GenePix GPR files were produced and included in this series.
2010-06-21 | E-GEOD-14717 | biostudies-arrayexpress
Project description:We designed a custom expression 8x15 k microarray for Cottus fishes based on transcriptome sequencing. It is a known fact, that oligonucleotide probes differ in the binding behavior towards their target sequences. Therefore, we performed a calibration of our microarray where we assessed the binding behavior of the individual probes empirically. This information was used to normalize gene expression data measurements with the same microarray in another experiment. Please refer to the accompanying publication (Czypionka et al. 2011."Transcriptome changes after genome wide admixture in invasive sculpins" Molecular Ecology; no doi yet) for more information. Labeled cRNA was prepared from 3 Cottus fish. These 3 fish were representative of species (C.rhenanus, C.perifretum, invasive hybrid species) used in another experiment. An calibration pool was prepared from equimolar amounts of this cRNA. Increasing amounts of labeled cRNA (75 ng, 150 ng, 300 ng, 600 ng, 1200 ng, 2400 ng, 4800 ng), corresponding to (1/8, 1/4, 1/2, 1, 2, 4 and 8 times the recommended amount of 600 ng) were hybridized to 7 microarrays (one microarray per dilution-step). The change in observed signal intensity in relation to the change in amount of labeled cRNA was used to infer the target-binding behavior of the individual probes. This information was extracted, to be used for a normalization procedure in another experiment with the same microarray (see Czypionka et al. 2011."Transcriptome changes after genome wide admixture in invasive sculpins" Molecular Ecology; no doi yet)
2012-03-26 | E-GEOD-36800 | biostudies-arrayexpress
Project description:A custom 8x60 k expression microarray for larvae of European fire salamander (Salamandra salamandra) was designed based on transcriptome sequencing. It is known the fact, that oligonucleotide probes differ in the binding behavior towards their target sequences. Therefore, we performed a calibration of our microarray where we assessed the binding behavior of the individual probes empirically. This information was used to normalize gene expression data measurements with the same microarray in another experiment. Please refer to the accompanying publication (Czypionka et al. 2015." Ecological transcriptomics – a non-lethal sampling approach for endangered fire salamanders" Methods in Ecology and Evolution) for more information. Labeled cRNA was prepared from Salamander larvae kept at 9°C and 17°C. A cRNA calibration pool was prepared with equimolar amounts of cRNA prepared from (a) a larvae (temperature: 9°C: source: pond KOE), (b) a larvae (temperature: 17°C: source: pond KOE), (c) a larvae (temperature: 9°C: source: stream KoGB (Klufterbach) and (d) a larvae (temperature: 17°C: source: stream KoGB (Klufterbach). See Steinfartz et al. (2007) (doi: 10.1111/j.1365-294X.2007.03490.x) for information of the source populations. Increasing amounts of labeled cRNA (75 ng, 150 ng, 300 ng, 600 ng, 1000 ng, 1400 ng, 1800 ng, 2200 ng), corresponding to (1/8, 1/4, 1/2, 1, 1 2/3, 2 1/3, 3 and 3 3/3 times the recommended amount of 600 ng) were hybridized to 8 microarrays (one microarray per dilution). The change in observed signal intensity in relation to the change in amount of labeled cRNA was used to infer the target-binding behavior of the individual probes. This information was extracted, to be used for a normalization procedure in another experiment with the same microarray (see Czypionka et al. 2015." Ecological transcriptomics – a non-lethal sampling approach for endangered fire salamanders" Methods in Ecology and Evolution). The current study provides only raw data for a calibration experiment, to validate the binding behavior of the different probes on a newly designed microarray for a non model organism (European Fire salamander). This calibration is based only on raw data. More information on targeted genes is provided in a different GEO dataset (currently submitted), where biological meaningful analysis are performed with data which are normalized based on this calibration.
2015-06-20 | E-GEOD-70055 | biostudies-arrayexpress
Project description:We designed a custom expression 8x15 k microarray for Cottus fishes based on transcriptome sequencing. It is a known fact, that oligonucleotide probes differ in the binding behavior towards their target sequences. Therefore, we performed a calibration of our microarray where we assessed the binding behavior of the individual probes empirically. This information was used to normalize gene expression data measurements with the same microarray in another experiment. Please refer to the accompanying publication (Czypionka et al. 2011."Transcriptome changes after genome wide admixture in invasive sculpins" Molecular Ecology; no doi yet) for more information.
2012-03-27 | GSE36800 | GEO
Project description:Calibration sausages WGS containing mammalian and avian species
| PRJEB34001 | ENA
Project description:Mass spectrometry (MS) measurements are not inherently calibrated. Researchers use various calibration methods to assign meaning to arbitrary signal intensities and improve precision. Internal calibration (IC) methods use internal standards (IS) such as synthesized or recombinant proteins or peptides to calibrate MS measurements by comparing endogenous analyte signal to the signal from known IS concentrations spiked into the same sample. However, recent work suggests that using IS as IC introduces quantitative biases that affect comparison across studies due to the inability of IS to capture all sources of variation present throughout an MS workflow. Here we describe a single-point external calibration (EC) strategy to calibrate signal intensity measurements to a common reference material, placing MS measurements on the same scale and harmonizing signal intensities between instruments, acquisition methods, and sites. We demonstrate data harmonization between laboratories and methodologies using this generalizable approach.
2019-02-02 | PXD011297 | panorama
Project description:A custom 8x60 k expression microarray for larvae of European fire salamander (Salamandra salamandra) was designed based on transcriptome sequencing. It is known the fact, that oligonucleotide probes differ in the binding behavior towards their target sequences. Therefore, we performed a calibration of our microarray where we assessed the binding behavior of the individual probes empirically. This information was used to normalize gene expression data measurements with the same microarray in another experiment. Please refer to the accompanying publication (Czypionka et al. 2015." Ecological transcriptomics – a non-lethal sampling approach for endangered fire salamanders" Methods in Ecology and Evolution) for more information.
2015-06-20 | GSE70055 | GEO
Project description:Interleukin-2 (IL-2) is a pleotropic cytokine that mediates both pro- and anti-inflammatory functions. Immune cells natural differ in their sensitivity to IL-2 due to cell-type and activation-state dependent expression of receptors and signaling pathway components. To probe differences in IL-2 signaling across cell types, we created through structure-based design, and then profiled, a series of IL-2 variants with the capacity to titrate signal strength in fine increments. One of these partial agonists, IL-2-REH, specifically expanded FoxP3+ regulatory T cells (Tregs) with reduced activity on CD8+ T cells due to cell-type intrinsic differences in IL-2 signaling. IL-2-REH elicited cell-type dependent differences in gene expression and provided therapeutic benefit in an in vivo model of mouse Colitis. Our findings show that cytokine partial agonists can be used to calibrate intrinsic differences in response thresholds across responding cell types to narrow pleiotropic actions, which may be generalizable to other cytokine and growth factor systems.
2021-05-12 | GSE162928 | GEO