GEO DataSets

Comparison of RNA isolation from whole blood using the PAXgene system to that from leukocytes using the buffy coat procedure. Blood of healthy subjects and trauma patients examined. Results indicate that RNA isolated from whole blood produced more noise than that from leukocytes.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 protocol, 2 tissue sets

Platform:

GPL96

Series:

GSE1343

16 Samples

Download data

(Submitter supplied) #G017 Burn/Trauma Study. This is a Glue Grant Study comparison between gene expression analyses performed in eight trauma/burn subjects using either a buffy coat isolation of whole blood or using the PAXgene system Keywords: other

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS917

Platform:

GPL96

16 Samples

Download data

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

48 Samples

Download data: CEL

(Submitter supplied) RNA isolation and purification steps greatly influence the results of gene expression profiling. There are two commercially available products for whole blood RNA collection, PAXgene and Tempus blood collection tubes, and each comes with their own RNA purification method. We examined the impact of RNA isolation methods on gene expression profiles. We demonstrated that peripheral blood RNA isoaltion can critically impact differential expression results, particularly in the clinical setting where fold-change differences are typically small and there is inherent variability within biological corhorts Keywords: micorarray quality assurance

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

20 Samples

Download data: CEL

(Submitter supplied) RNA isolation and purification steps greatly influence the results of gene expression profiling. There are two commercially available products for whole blood RNA collection, PAXgene and Tempus blood collection tubes, and each comes with their own RNA purification method. We examined the impact of RNA isolation methods on gene expression profiles. We demonstrated that peripheral blood RNA isoaltion can critically impact differential expression results, particularly in the clinical setting where fold-change differences are typically small and there is inherent variability within biological corhorts Keywords: micorarray quality assurance, phytohemagglutinin (PHA)

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

28 Samples

Download data: CEL

(Submitter supplied) Peripheral blood is an accessible and informative source of transcriptomal information for many human disease and pharmacogenomic studies. While there can be significant advantages to analyzing RNA isolated from whole blood, particularly in clinical studies, the preparation of samples for microarray analysis is complicated by the need to minimize artifacts associated with highly abundant globin RNA transcripts. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL201

24 Samples

Download data: CEL, CHP

(Submitter supplied) Peripheral Blood gene expression is widely used in the discovery of biomarkers and development of therapeutics. Recently, a spate of commercial blood collection and preservation systems have been introduced with proprietary variations that may differentially impact the transcriptomic profiles. Comparative analysis of these collection platforms will help optimize protocols to detect, identify, and reproducibly validate true biological variance among subjects. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL17077

64 Samples

Download data: TXT

(Submitter supplied) Readily accessible samples such as peripheral blood or cell lines are increasingly being used in large cohorts to characterise gene expression differences between a patient group and healthy controls. However, cell and RNA isolation procedures and the variety of cell types that make up whole blood can affect gene expression measurements. We therefore systematically investigated global gene expression profiles in peripheral blood from six individuals collected during two visits by comparing five of the following cell and RNA isolation methods: whole blood (PAXgene), peripheral blood mononuclear cells (PBMCs), lymphoblastoid cell lines (LCLs), CD19 and CD20 specific B-cell subsets. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL7350

56 Samples

Download data: TXT

(Submitter supplied) Microarray technology provides a powerful tool for defining gene expression profiles of airway epithelium that lend insight into the pathogenesis of human airway disorders. The focus of this study was to establish rigorous quality control parameters to ensure that microarray assessment of the airway epithelium is not confounded by experimental artifact. Samples (total n=223) of trachea, large and small airway epithelium were collected by fiberoptic bronchoscopy of 144 individuals (42 healthy non-smokers, 49 healthy smokers, 11 symptomatic smokers, 22 smokers with lone emphysema with normal spirometry, and 20 smokers with COPD) were processed and hybridized to Affymetrix HG-U133 2.0 Plus microarrays. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

223 Samples

Download data: CEL, CHP

(Submitter supplied) Studying the causes and correlates of natural variation in gene expression in healthy populations assumes that individual differences in gene expression can be reliably and stably assessed across time. However, this is yet to be established. We examined 4-hour test-retest reliability and 10 month test-retest stability of individual differences in gene expression in 10 12-year-old children.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

36 Samples

Download data: CEL

(Submitter supplied) expression files supporting: Application of genome-wide expression analysis to human health and disease. PNAS Supplementary Information: http://www.gluegrant.org/pubsupport/PNAS_1/ Keywords = clinical studies Keywords = gene expression Keywords = inflammation Keywords = microarray Keywords = trauma Keywords: other

Organism:

Homo sapiens

Type:

Expression profiling by array

Platforms:

GPL96 GPL570

88 Samples

Download data: CEL, EXP

(Submitter supplied) RNA from vastus lateralis of healthy young (21-31 year old) and older (62-77 year old) men. Signal data normalized to mean intensity of 500 over all probes sets. Analysis done with Affymetrix Microarray Suite 5.0 software. Keywords: other

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS156

Platform:

GPL91

12 Samples

Download data: CEL

Comparison of gene expression in vastus lateralis skeletal muscle biopsies in healthy young (21-31 year old) and older (62-77 year old) men. Sample RNAs isolated from individuals and pooled into groups of 8.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 age sets

Platform:

GPL91

Series:

GSE80

12 Samples

Download data: CEL

(Submitter supplied) RNA stabilizing reagents have been developed to ensure that transcription profiles of whole blood samples reflect the physiological state at the time of the blood drawn. Ability to preserve and maintain the in vivo gene expression status ex vivo is essential for gene expression profiling and biomarker discovery from clinical sample material. We compared transcriptional profiles obtained from samples collected using two established peripheral blood RNA collection systems, TEMPUS™ and PAXgene™. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL2700

14 Samples

Download data: TXT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6102

101 Samples

Download data

(Submitter supplied) Analysis of long-term freezing on the stability of transcriptome profiles in PAXgene stabilized whole blood samples. In the present study it was tested if long-term freezing of PAXgene RNA tubes (up to one year) has an influence on the transcriptome profile of peripheral whole blood samples. Results indicated that gene expression profiles of whole blood samples stabilized with PAXgene RNA tubes remain stable for at least 1 year.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6102

24 Samples

Download data: TXT

(Submitter supplied) Analysis of effect of long-term cryopreservation on peripheral blood mononuclear cells at gene expression level. The hypothesis tested in the present study was that long-term cryopreservation has an influence on the transcriptome profile of peripheral blood mononuclear cells. Results indicated remarkable changes in expression patterns upon cryopreservation of PBMCs, with decreasing signal intensities over time.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6102

53 Samples

Download data: TXT

(Submitter supplied) Analysis of cryopreservation effects on peripheral blood mononuclear cells at gene expression level. The hypothesis tested in the present study was that cryopreservation has an influence on the transcriptome profile of peripheral blood mononuclear cells. Results indicated remarkable changes in expression patterns upon cryopreservation of PBMCs, with a strong loss of signal intensities to background levels for several transcripts.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6102

24 Samples

Download data: TXT

(Submitter supplied) Gene expression comparison of Wilms tumor RNA versus Stratagene Universal reference RNA Keywords: repeat sample

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS1791

Platform:

GPL96

4 Samples

Download data

Expression profiling of Wilms' tumor tissue after pre-operative chemotherapy. Stratagene Universal Reference RNA also examined. Results are part of a cross-platform evaluation and compared to data generated from Serial Analysis of Gene Expression.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 other sets

Platform:

GPL96

Series:

GSE1158

4 Samples

Download data