Mice with the spontaneous uncv mutation are hairless. We utilize the uncv null mouse to investigate the underlying mechanisms giving rise to the relevant phenotypes and reveal significant changes in certain signaling pathways by microarray.
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View SamplesThe 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.
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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.
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View SamplesThis SuperSeries is composed of the SubSeries listed below.
A Systems Approach to Reverse Engineer Lifespan Extension by Dietary Restriction.
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View SamplesThe roles of histone demethylases (HDMs) for the establishment and maintenance of the pluripotent state are incompletely defined. Here, we show that JmjC domain-containing protein 1c (Jmjd1c), a putative histone H3 Lys 9 (H3K9) demethylase, is required for mouse embryonic stem cell (ESC) self-renewal. To understand how Jmjd1c knockdown (KD) and resultant changes in the H3K9 methylations would affect ESCs at a global gene expression level, we compared the whole genome transcriptomes between the control and Jmjd1c KD ESCs (6 samples, including 2 shNT control samples and 4 shJmjd1c samples, 2 from #3 and 2 from #4 shRNA, respectively) using affymetrix microarray.
JMJD1C Ensures Mouse Embryonic Stem Cell Self-Renewal and Somatic Cell Reprogramming through Controlling MicroRNA Expression.
Specimen part
View SamplesMulticiliated cells (MCCs) possess multiple motile cilia on the cell surface and are widely distributed throughout the vertebrate body to perform important physiological functions by regulating fluid movement in the intercellular space. However, neither their function during organ development nor the molecular mechanisms underlying multiciliogenesis are yet well understood. We aim to study the function of miR-34b in multiciliogenesis.
miR-34b regulates multiciliogenesis during organ formation in zebrafish.
Specimen part
View SamplesPluripotency-associated transcription factor Foxd3 is required for maintaining pluripotent cells. However, the molecular mechanisms underlying its function are largely unknown. Here, we report that Foxd3 maintains the ESC identity through counteracting differentiation induction of Calcienurin-NFAT signaling.
Foxd3 suppresses NFAT-mediated differentiation to maintain self-renewal of embryonic stem cells.
Specimen part, Cell line, Treatment
View SamplesOur study reveal that Chd4 is essential for stemness maintenance of ESCs. As Chd4 deficient ESCs show attentuated self-renewal ability and induced differentiation marker gene expression.
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Cell line
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