GEO DataSets

(Submitter supplied) K562 cells (duplicate cultures A & B) are treated with 50 micromolar hemin for 0, 6, 12, 24, 48, 72 hours followed by RNA extraction and gene expression profiling on Affymetrix human U133A arrays and analysis by MAS 5.0 Keywords: other

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS826

Platform:

GPL96

12 Samples

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Expression profiling of K562 erythroleukemia cells induced to differentiate into erythroid-like cells by hemin. K562 cells examined at various time points up to 72 hours following treatment with 50 uM hemin. Results provide insight into mechanisms underlying hemoglobinization.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 agent, 6 time sets

Platform:

GPL96

Series:

GSE1036

12 Samples

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(Submitter supplied) computational analysis of transcriptomic information during erythroid development Keywords: erythroid differentiation

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS2431

Platform:

GPL570

18 Samples

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Analysis of adult differentiating CD34+ hematopoietic progenitor cells at various time points up to 11 days of growth in serum-free medium containing erythropoietin, interleukin-3 and stem cell factor. Results provide insight into the molecular basis of erythropoiesis.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 6 time sets

Platform:

GPL570

Series:

GSE4655

18 Samples

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

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS2926

Platform:

GPL887

77 Samples

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(Submitter supplied) Little is known about the global transcriptional program underlying megakaryocytic (Mk) differentiation, maturation, and apoptosis. Using DNA microarrays and Q-RT-PCR, we examined the transcriptional profile of Mk differentiation human CD34-positive hematopoietic stem and progenitor cells cultured with thrombopoietin, interleukin-3, and Flt3-ligand. The goal this study was to identify genes involved in the various facets of Mk differentiation including commitment, polyploidization, proplatelet formation, and apoptosis. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL887

36 Samples

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(Submitter supplied) Little is known about the global transcriptional program underlying megakaryocytic (Mk) differentiation, maturation, and apoptosis. Using DNA microarrays and Q-RT-PCR, we examined the transcriptional profile of phorbol-ester-induced Mk differentiation of the megakaryoblastic CHRF-288-11 (CHRF) cell line – a model system for investigating megakaryopoiesis. The goals of this study were to (1) verify the megakaryocytic nature of the CHRF cell line at the transcriptional level, and (2) extract novel insights into the key facets of Mk maturation including polyploidization, proplatelet formation, and apoptosis. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL887

41 Samples

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Temporal analysis of phorbol ester-treated CHRF-288-11 megakaryoblastic cells induced to undergo megakaryocytic (Mk) differentiation and primary Mk (PriMk) cells derived from cytokine-treated CD34+ peripheral blood cells. Results provide insight into molecular mechanisms underlying megakaryopoiesis.

Organism:

Homo sapiens

Type:

Expression profiling by array, log e ratio, 4 agent, 2 cell line, 13 time sets

Platform:

GPL887

Series:

GSE8914

77 Samples

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(Submitter supplied) PURPOSE. Triamcinolone acetonide (TA) and dexamethasone (DEX) are corticosteroids commonly used for ocular inflammation but both can cause ocular hypertension. We investigated the differential gene expression profile of human trabecular meshwork (TM) cells in response to treatment by TA compared to that by DEX. METHODS. Total RNA was extracted from cultured human TM cells treated with TA or DEX and used for microarray gene expression analysis. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL4564

9 Samples

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(Submitter supplied) Prolonged use of glucocorticoids can lead to the formation of a cataract, however the mechanism is not known. We recently reported the presence of the functional glucocorticoid receptor in immortalized cultured mammalian lens epithelial cells (Gupta & Wagner, Invest Ophthalmol Vis Sci 2003), but the short term biological effect of glucocorticoid action in lens epithelial cells is not known. This study seeks to examine glucocorticoid induced changes in global gene expression in LECs. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS1353

Platform:

GPL96

12 Samples

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Analysis of cultured immortalized lens epithelial cells (LEC) 4 and 16 hours after treatment with 1 uM dexamethasone, a glucocorticoid steroid hormone. Long-term glucocorticoid use can induce cataract formation. Results identify glucocorticoid targets and short-term effects of glucocorticoid on LECs

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 agent, 2 time sets

Platform:

GPL96

Series:

GSE3040

12 Samples

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(Submitter supplied) d-serine is naturally present throughout the human body. It is also used as add-on therapy for treatment-refractory schizophrenia. d-Serine interacts with the strychnine-insensitive glycine binding site of NMDA receptor, and this interaction could lead to potentially toxic activity (i.e., excitotoxicity) in brain tissue. The transcriptomic changes that occur in the brain after d-serine exposure have not been fully explored. more...

Organism:

Rattus norvegicus

Type:

Expression profiling by array

Dataset:

GDS3643

Platform:

GPL1355

24 Samples

Download data: CEL

Analysis of forebrains of animals treated with up to 500 mg/kg D-serine for 96 hours. D-serine is involved in many physiological processes through its interaction with the glycine binding site of the NMDA receptor. Results provide insight into the impact of D-serine exposure on neuronal functions.

Organism:

Rattus norvegicus

Type:

Expression profiling by array, count, 2 agent, 6 dose sets

Platform:

GPL1355

Series:

GSE10748

24 Samples

Download data: CEL

(Submitter supplied) We investigated the miRNA expression in ex vivo human erythroid cultures from K562 cells. Hypothetically, the decline of certain miRNAs may promote erythropoiesis by unblocking expression of key functional proteins while the up-regulation of other miRNAs may block commitment to non-erythroid lineages. By comparison with the miRNA expression changes in human umbilical cord blood-derived CD34 cells, signature miRNAs for erythroid development can be discovered. more...

Organism:

Homo sapiens

Type:

Non-coding RNA profiling by array

Platform:

GPL4400

8 Samples

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(Submitter supplied) We investigated the miRNA expression in ex vivo human erythroid cultures from umbilical cord blood (UCB)-derived CD34 cells. Hypothetically, the decline of certain miRNAs may promote erythropoiesis by unblocking expression of key functional proteins while the up-regulation of other miRNAs may block commitment to non-erythroid lineages. Therefore, discovering the patterns and sequence of miRNA expression during hematopoietic differentiation will provide insights about the functional roles of these tiny noncoding genes. more...

Organism:

Homo sapiens

Type:

Non-coding RNA profiling by array

Platform:

GPL4400

6 Samples

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(Submitter supplied) The complete platform showing three replicates per miRNA on the chip Protocol: Probeset was obtained from Ambion. Construction of the probeset, printing of probset on to array, hybridization and detection protocols can be obtained from Ambion.

Organism:

Homo sapiens

2 Series

14 Samples

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(Submitter supplied) The anterior pituitary is comprised of five major hormone-secreting cell types which differentiate during embryonic development in a temporally distinct manner. Microarrays containing 5,128 unique cDNAs expressed in the neuroendocrine system were produced and used to identify genes with potential involvement in onset of thyroid-stimulating hormone beta-subunit, growth hormone, and prolactin gene transcription during chick embryonic development. more...

Organism:

Gallus gallus

Type:

Expression profiling by array

Dataset:

GDS1952

Platform:

GPL1744

16 Samples

Download data: TIFF

(Submitter supplied) A major research focus in our laboratory is the development of the chicken pituitary gland. As this tissue does not yield sufficient RNA to analyze using cDNA microarrays, mRNA must be amplified by reverse transcription with an oligo-dT primer containing the T7 RNA polymerase promoter site followed by in vitro transcription using T7 RNA polymerase. Therefore, this preliminary study investigating differential gene expression between embryonic day 17, when all the major cell types in the chick anterior pituitary gland have differentiated, and post-hatch day 3 was conducted to verify that amplified antisense RNA could be used in conjunction with our neuroendocrine microarrays containing 5,128 unique cDNAs to detect changes in gene expression. more...

Organism:

Gallus gallus

Type:

Expression profiling by array

Dataset:

GDS1951

Platform:

GPL1744

6 Samples

Download data: TIFF

(Submitter supplied) Spotted amplified cDNA array on glass. Produced with cDNA clones expressed in the chicken neuroendocrine system. Tissues used to produced the cDNA library included the hypothalamus, anterior pituitary gland, and pineal gland. 7200 spots Keywords = spotted Keywords = cDNA

Organism:

Gallus gallus

2 DataSets

2 Series

22 Samples

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Analysis of embryonic pituitary glands at various ages from day 10 to day 17 using a neuroendocrine system specific cDNA microarray. Results identify genes potentially involved in the onset of thyroid-stimulating hormone beta-subunit, growth hormone, and prolactin gene transcription.

Organism:

Gallus gallus

Type:

Expression profiling by array, log2 ratio, 4 age sets

Platform:

GPL1744

Series:

GSE3227

16 Samples

Download data: TIFF