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SRP044084
Homo sapiens
8 Downloadable Samples
IlluminaHiSeq2000
Description
We investigated the ALDH2*2 genetic polymorphism and its underlying mechanisms for the first time in a human model system of induced pluripotent stem cell-derived cardiomyocytes (iPSC-CMs) generated from individuals carrying the most common heterozygous form of the ALDH2*2 genotype. We showed that the ALDH2*2 mutation confers elevated levels of reactive oxygen species (ROS) and toxic aldehydes such as 4HNE, thereby inducing cell cycle arrest and activation of apoptotic signaling pathways, especially during ischemic injury. ALDH2 exerts control of cell survival decisions via modulation of oxidative stress levels. This regulatory circuitry was found to be dysfunctional in the loss-of-function ALDH2*2 genotype, causing upregulation of apoptosis in cardiomyocytes following ischemic insult. These results reveal a novel function of the metabolic enzyme ALDH2 in modulation of cell survival decisions. Overall design: Molecular mechanism of increased ischemic damage in cardiomyocytes of ALDH2*2 genotype.
Publication Title
Characterization of the molecular mechanisms underlying increased ischemic damage in the aldehyde dehydrogenase 2 genetic polymorphism using a human induced pluripotent stem cell model system.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 1 Downloadable Sample
Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
We used microarrays to observe the global gene expression in hematopoietic stem and projenitor cells during ex vivo culture with DMSO (Blank) or with Garcinol (GAR) and identified distinct classes of up or down-regulated genes.
Publication Title
Ex vivo expansion of human hematopoietic stem cells by garcinol, a potent inhibitor of histone acetyltransferase.
Sample Metadata Fields
Specimen part, Treatment
View Samples- Oryza sativa indica group
- 2 Downloadable Samples
- Affymetrix Rice Genome Array (rice)
Description
The publicly available genome sequence information of two rice strains, japonica cultivar Nipponbare and indica cultivar 93-11, opens a great opportunity for investigation of performances DNA genotyping by high-density oligonucleotide arrays. Here, we compare single feature polymorphism (SFP) detection performances between whole genome hybridization and transcript hybridization using Affymetrix Rice Expression Array and the two rice cultivars.
Publication Title
A simple optimization can improve the performance of single feature polymorphism detection by Affymetrix expression arrays.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 2 Downloadable Samples
- Affymetrix Human Exon 1.0 ST Array [probe set (exon) version (huex10st)
Description
Analysis to find splicing variants that are differentially expressed in a highly metastatic stomach cancer cell line, MKN45P, versus its parental cell line, MKN45
Publication Title
Identification of a novel protein isoform derived from cancer-related splicing variants using combined analysis of transcriptome and proteome.
Sample Metadata Fields
Specimen part, Cell line
View Samples- Mus musculus
- 8 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Identification of cancer stem/initiating cells (CSCs/CICs) by a specific marker is useful for diagnosis and therapy of cancer. We have determined that PSF1 which plays a role in DNA replication in lower species is strongly expressed in wide range of normal stem cell population. Here, utilizing the transcriptional activity of PSF1 promoter in tumor cell xenograft model, we show that PSF1high cancer cells display malignant features including high proliferating activity, serial transplantation potential, and metastatic ability those are used for criteria of CSCs/CICs. PSF1high cancer cells localize in perivascular region and genetically display ES cell like signature. Silencing of PSF1 by RNAi inhibited growth of cancer cells mediated by disruption of DNA synthesis and chromosomal segregation. These suggested that PSF1 is a possible maker and a molecular target of CSCs/CICs.
Publication Title
PSF1, a DNA replication factor expressed widely in stem and progenitor cells, drives tumorigenic and metastatic properties.
Sample Metadata Fields
Cell line
View Samples- Mus musculus
- 6 Downloadable Samples
- Affymetrix Mouse Gene 1.0 ST Array (mogene10st)
Description
The mouse anterior-posterior (A-P) axis polarization is preceded by formation of the distal visceral endoderm (DVE). However, the mechanism of the emergence of DVE cells is not well understood. Here, we show by in vitro culturing of embryos immediately after implantation in micro-fabricated cavities (narrow; 90 micro-meter, wide; 180 miro-meter in diameter) that the external mechanical cues exerted on the embryo, i.e. cultured in the narrow cavity, are crucial for DVE formation as well as elongated egg cylinder shape. This implies that these developmental events immediately after implantation are not simply embryo-autonomous processes but require extrinsic mechanical factors. Further whole genome-wide gene expression profiles with DNA microarray revealed that no significant difference of transcripts were evident with or without mechanical cues except DVE-related markers. Thus, we propose that external mechanical cues rather than not specific molecular pathways can trigger the establishment of the A-P axis polarization, which is one of the fundamental proccesses of mammalian embryogenesis.
Publication Title
External mechanical cues trigger the establishment of the anterior-posterior axis in early mouse embryos.
Sample Metadata Fields
Specimen part, Treatment
View Samples- Rattus norvegicus
- 24 Downloadable Samples
- Illumina HiSeq 2000
Description
Although recent studies support regenerative potential based on cardiac progenitor cells (CPCs), it remains unclear what cues regulate CPC fate. Using 2- and 3D-culture models, we demonstrate that the two most abundantly expressed matrix proteins in the heart, laminin and fibronectin, have opposite roles in CPC fate decision. CPCs on fibronectin showed predominantly nuclear localization of the transcriptional co-activator YAP and maintained proliferation. In contrast, seeding on laminin induced cytosolic retention and degradation of YAP and altered gene expression, which preceded decreased proliferation and enhanced lineage commitment. RNA-sequencing identified Plk2 as candidate target gene of YAP. Plk2 expression depended on YAP stability, was rapidly downregulated on laminin, and its regulation was sufficient to rescue and/or mimic the CPC response to laminin and fibronectin, respectively. These findings propose a novel role of Plk2 and identify an early molecular mechanism in matrix-instructed CPC fate with potential implications for therapeutic cardiac regeneration. Overall design: Expression profiling of cardiac progenitor cells in suspension and cultured on dishes coated with laminin or fibronectin or on non-coated dishes (biological triplicates each)
Publication Title
Polo-Like Kinase 2 is Dynamically Regulated to Coordinate Proliferation and Early Lineage Specification Downstream of Yes-Associated Protein 1 in Cardiac Progenitor Cells.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 4 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Low-intensity pulsed ultrasound (LIPUS) has been applied as a therapeutic adjunct to promote fracture healing. However, the detailed molecular mechanisms by which LIPUS promotes bone fracture healing have not yet been fully elucidated.
Publication Title
Genetic response to low‑intensity ultrasound on mouse ST2 bone marrow stromal cells.
Sample Metadata Fields
Specimen part
View Samples- Oryza sativa indica group
- 1 Downloadable Sample
- Affymetrix Rice Genome Array (rice)
Description
Nucleotide polymorphisms can potentially influence the hybridization of mRNA to 25-mer oligonucleotides. Because Affymetrix Rice Genome Array was designated mainly for Nipponbare genome of Oryza sativa, the expression level of other varieties could not be estimated correctly. We tried to apply new approaches to estimate expression level by discerning the probe-level differential hybridization.
Publication Title
SNEP: Simultaneous detection of nucleotide and expression polymorphisms using Affymetrix GeneChip.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 147 Downloadable Samples
- Affymetrix HT Human Genome U133A Array (hthgu133a)
Description
Background: Renal cell carcinoma (RCC) is characterized by a number of diverse molecular aberrations that differ among individuals. Recent approaches to molecularly classify RCC were based on clinical, pathological as well as on single molecular parameters. As a consequence, gene expression patterns reflecting the sum of genetic aberrations in individual tumors may not have been recognized. In an attempt to uncover such molecular features in RCC, we used a novel, unbiased and integrative approach.
Publication Title
Integrative genome-wide expression profiling identifies three distinct molecular subgroups of renal cell carcinoma with different patient outcome.
Sample Metadata Fields
Sex, Specimen part, Disease, Disease stage, Cell line
View Samples