The young panicles 2 cm length were used for expression analysis in well watered control and drought stressed treatment. The panicle samples from biological replicates of six rice varieties were obtained in three independent experiments. The expression profiles were generated using Affymetrix rice genome arrays.
Comparative Analysis of Expression Profiles of Panicle Development among Tolerant and Sensitive Rice in Response to Drought Stress.
Specimen part, Treatment
View SamplesWe use genetic manipulations of regulators representing different pathways to examine whether transcriptomes progressively resemble dietary restriction when multiple regulators are perturbed.
A Systems Approach to Reverse Engineer Lifespan Extension by Dietary Restriction.
Specimen part
View SamplesUnraveling the mechanisms underlying early neural differentiation of ESCs is crucial to the cell-based therapies of neurodegenerate diseases. Neural fate acquisition is proposed to be controlled by a default mechanism, for which the molecular regulation is not well understood. In this study, we investigated the functional roles of Mediator Med23 in pluripotency and lineage commitment of embryonic stem cells (ESCs). Unexpectedly we found that, despite the largely unchanged pluripotency and self-renewal of ESCs, Med23-depletion rendered the cells prone to neural differentiation in different differentiation assays. Knockdown of other Mediator subunit, Med1 or Med15, did not alter the neural differentiation of ESCs; and Med15 knockdown selectively inhibited endoderm differentiation, suggesting the specificity of cell fate control by distinctive Mediator subunits. Gene profiling revealed that Med23-depletion attenuated the BMP signaling in ESCs. Mechanistically, MED23 modulated Bmp4 expression by controlling the activity of ETS1 that is involved in the Bmp4 promoter-enhancer communication. Interestingly, Med23 knockdown in zebrafish embryos also enhanced the neural development at early embryogenesis, which could be reversible by coinjection of bmp4 mRNA. Taken together, our study reveals an intrinsic, restrictive role of MED23 in early neural development, thus providing new molecular insights for neural fate determination.
Mediator Med23 deficiency enhances neural differentiation of murine embryonic stem cells through modulating BMP signaling.
No sample metadata fields
View SamplesDietary restriction (DR) is the most powerful natural means to extend lifespan. Here we obtain temporally resolved transcriptomes during calorie restriction and intermittent fasting in Caenorhabditis elegans, and find that early and late responses involve metabolism and cell cycle/DNA damage, respectively.
A Systems Approach to Reverse Engineer Lifespan Extension by Dietary Restriction.
No sample metadata fields
View SamplesThis SuperSeries is composed of the SubSeries listed below.
A Systems Approach to Reverse Engineer Lifespan Extension by Dietary Restriction.
No sample metadata fields
View SamplesMesenchymal stem cells (MSCs) have been shown to exert therapeutic effects on various autoimmune diseases. However, such therapeutic effect is not always achieved. Among many reasons, MSC culture methodologies may account for the these differences. It is known that oxygen concentration could profoundly affect the properties of MSCs. Therefore, we compared human umbilical cord derived MSCs cultured under hypoxic and normoxic conditions.
No associated publication
Specimen part
View SamplesEnvironmental cadmium, with a high average dietary intake, is a severe public health risk. However, the long-term health implications of environmental exposure to cadmium in different life stages remain unclear.
Sex-Dependent Effects of Cadmium Exposure in Early Life on Gut Microbiota and Fat Accumulation in Mice.
Sex, Specimen part
View SamplesSelenium (Se) is an important trace element for many organisms and is incorporated into selenoproteins as selenocysteine (Sec). In eukaryotes, selenophosphate synthetase SPS2 is essential for Sec biosynthesis. In recent years, genetic disruptions of both Sec biosynthesis genes and selenoprotein genes have been investigated in different animal models, which provide important clues for understanding the Se metabolism and function in these organisms. However, a systematic study on the knockdown of SPS2 has not been performed in vivo.
Gene expression profiling of selenophosphate synthetase 2 knockdown in Drosophila melanogaster.
No sample metadata fields
View SamplesC2C12 myoblasts differentiation is a precise controlled process. Splicing of many genes changes during the differentiation process. Some muscle-specific splicing isoforms play important role in myogenesis.
No associated publication
Specimen part, Cell line
View SamplesWe generated three kinds of genetically identical mouse reprogrammed cells: induced pluripotent stem cells (iPSCs), nuclear transfer embryonic stem cells (ntESCs) and iPSC-nt-ESCs that are established after successively reprogramming of iPSCs by nuclear transfer (NT). NtESCs show better developmental potential than iPSCs, whereas iPSC-nt-ESCs display worse developmental potential than iPSCs.
No associated publication
Sex, Specimen part, Cell line
View Samples