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GSE69706
Homo sapiens
13 Downloadable Samples
Illumina HumanHT-12 V4.0 expression beadchip
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Conversion of Human Gastric Epithelial Cells to Multipotent Endodermal Progenitors using Defined Small Molecules.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 13 Downloadable Samples
- Illumina HumanHT-12 V4.0 expression beadchip
Description
Endodermal stem/progenitor cells have diverse potential applications in research and regenerative medicine, so a readily available source could have widespread uses. Here we describe derivation of human induced endodermal progenitor cells (hiEndoPCs) from gastrointestinal epithelial cells using a cocktail of defined small molecules along with support from tissue-specific mesenchymal feeders. The hiEndoPCs show clonal expansion in culture and give rise to hepatocytes, pancreatic endocrine cells, and intestinal epithelial cells when treated with defined soluble molecules directing differentiation. The hiEndoPC-derived hepatocytes are able to rescue liver failure in Fah-/-Rag2-/- mice after transplantation, and, unlike hESCs, transplanted hiEndoPCs do not give rise to teratomas. Since human gastric epithelial cells are readily available from donors of many ages, this conversion strategy can generate clonally expandable cell populations with a variety of potential applications, including personalized drug screening and therapeutic strategies for liver failure and diabetes.
Publication Title
Conversion of Human Gastric Epithelial Cells to Multipotent Endodermal Progenitors using Defined Small Molecules.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 183 Downloadable Samples
- Illumina HumanRef-8 v3.0 expression beadchip
Description
Maternal smoking has a severe negative effect on all stages of pregnancy that in consequence impairs fetal growth and development. Tobacco smoke-related defects are well established at the clinical level; however, little is known about molecular mechanisms underlying these pathological conditions. We thus employed a genomic approach to determine transcriptome alterations induced by maternal smoking in pregnancy. We assayed gene expression profiles in peripheral blood (M) leukocytes and placentas (PL) of pregnant smokers and those without significant exposure, and in cord blood (D) leukocytes of their babies. Comparative analyses defined significant deregulation of 193 genes in M cells, 329 genes in placentas, and 49 genes in D cells of smokers. These genes were mainly involved in xenobiotic metabolism, oxidative stress, inflammation, immunity, hematopoiesis, trophoblast differentiation, and vascularization. Functional annotation of the deregulated genes outlined processes and pathways affected by tobacco smoke. In smoker newborns, we identified several deregulated pathways associated with autoimmune diseases. The study demonstrates a limited ability of placenta to modulate toxic effects of maternal tobacco use at the gene expression level.
Publication Title
Transcriptome alterations in maternal and fetal cells induced by tobacco smoke.
Sample Metadata Fields
Age, Specimen part, Subject
View Samples- Homo sapiens
- 104 Downloadable Samples
- Illumina HumanRef-8 v3.0 expression beadchip
Description
Passive smoke intake by pregnant women may have detrimental effects such as spontaneous abortion, lower birth weight, stillbirth, and reduced infant lung function. To extend our knowledge on molecular effects of tobacco smoke exposure in pregnancy, we analyzed transcriptome alterations in passive smokers (PS) and compared them to those in active smokers (AS). Using Illumina Expression Beadchip with 24,526 transcript probes, gene expression patterns were assayed in placentas from PS (N=25) exposed to environmental tobacco smoke (ETS) throughout pregnancy and non-exposed (NS) counterparts (N=35), and in cord blood cells from their newborns. The ETS exposure was evaluated by questionnaire disclosure and cotinine measurement in maternal and cord bloods. A total of 196 genes were significantly deregulated in placentas of PS compared to NS. These genes were primary associated with extracellular matrix, apoptosis, blood clotting, response to stress, embryonic morphogenesis, and lipid metabolism. Cord blood of newborns of PS displayed differential expression of 116 genes encoding mainly neuronal factors, regulators of immunologic response, and protooncogenes. Gene ontology analyses highlighted some important biological processes that might be associated with placental insufficiency and fetal growth restriction in PS, such as fatty acid catabolism, coagulation, regulation of growth, and response to steroid hormone stimulus. The study demonstrates that even low dose exposure to ETS during pregnancy leads to the significant deregulation of transcriptional regulation in placental and fetal cells. The data suggest the effect of ETS on the fetus is primary indirect, mediated via deregulation of placental functions. Comparison of PS and AS indicated that ETS exposure and active smoking in pregnancy partly employ the same molecular mechanisms.
Publication Title
Deregulation of gene expression induced by environmental tobacco smoke exposure in pregnancy.
Sample Metadata Fields
Age
View Samples- Mus musculus
- 12 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
MEFs were stimulated for 6 h with IFNa or IFNg after pretreatment with AMN107 or DMSO for at least 18 h.
Publication Title
No associated publication
Sample Metadata Fields
Cell line
View Samples- Mus musculus
- 9 Downloadable Samples
- Affymetrix Mouse Gene 1.0 ST Array (mogene10st)
Description
Allergen exposure was thought to play a critical role in the etiology of AR. And allergen avoidance, the practice of avoiding exposure to allergens, has been generally advised as the management of AR. However, the effect is uncertain and the underlying mechanism is far from known.
Publication Title
No associated publication
Sample Metadata Fields
Sex, Specimen part, Treatment
View Samples- Homo sapiens
- 6 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
HPSE plays important roles in gastric cancer cell proliferation, apoptosis and metastasis.The aim of this study is to explore molecular mechanism underling roles of HPSE in gastric cancer cell proliferation, survival, migration and metastasis.
Publication Title
No associated publication
Sample Metadata Fields
Disease, Disease stage, Cell line
View Samples- Mus musculus
- 4 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Aortic aneurysm is a life-threatening cardiovascular disorder due to the predisposition for dissection and rupture. Genetic studies have proved the involvement of the transforming growth factor- (TGF-) pathway in aortic aneurysm. Smad4 is the central mediator of canonical TGF- signaling. However, the exact role of Smad4 confined to the smooth muscle cells (SMCs) in the pathogenesis of aortic aneurysm is largely unknown. Furthermore, whether TGF- signaling disruption in SMCs could directly trigger aortic wall inflammation remains poorly investigated. Recently, we revealed a pivotal role of smooth muscle Smad4 signaling in maintaining aortic wall homeostasis and protecting against the development of aortic aneurysm and dissection. To evaluate the underlying mechanism by which Smad4 regulate VSMC functions and affects aneurysm formation and development, Smooth muscle specific Smad4 Knockout mice and the control littermate were sacrificed at 6 weeks old, and their aortic ateries were collected.We combined 3-5 vessels for one sample, and 2 samples for each phenotype. Subsequently, a total of 400ng RNA was used following Affymetrix instruction and 2 ug of cRNA were hybridized for 16 hr at 45. GeneChips were scanned using the Scanner 7G and the data was analyzed with Expression Console using Affymetrix default analysis settings and global scaling as normalization method. RMA analysis was employed to evaluate the gene expression.
Publication Title
No associated publication
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 4 Downloadable Samples
- Illumina HumanHT-12 V4.0 expression beadchip
Description
KLF3, a member of the Krppel-like factor (KLF) family, is expressed in a wide range of cell types. It is involved in hematopoiesis of several blood cell lineages including erythrocyte and B lymphocyte. However, the research of regulatory roles on hematopoiesis of KLF3 in K562 cells has been still largely limited. To comprehensively assess the regulatory roles of KLF3 on hematopoiesis in K562 cells, a microarray analysis was performed in KLF3-deficient K562 cells. The differentially expressed genes were applied to IPA analysis to observe the perturbed hematopoiesis-associated functions, networks, and molecular pathways. This study will extensively assess the regulatory roles of KLF3 on hematopoiesis in K562 cells.
Publication Title
No associated publication
Sample Metadata Fields
Cell line
View Samples- Mus musculus
- 2 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
TGF-beta/Smads signaling plays important roles in vascular integrity. To identify potential Smad4 target genes in brain endothelial cells that control cerebrovascular integrity, the microarray assay was performed to compare the gene expression profiles of bEnd3 transfected with Smad4-siRNA and control-siRNA.
Publication Title
Endothelial Smad4 maintains cerebrovascular integrity by activating N-cadherin through cooperation with Notch.
Sample Metadata Fields
Specimen part, Cell line
View Samples