This SuperSeries is composed of the SubSeries listed below.
Generation of genetically modified mice by oocyte injection of androgenetic haploid embryonic stem cells.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Generation of haploid embryonic stem cells from Macaca fascicularis monkey parthenotes.
Specimen part
View SamplesHaploid cells are amenable for genetic analysis because they contain only one set of chromosomes.Here,we report the derivation of haESCs from androgenetic blastocysts. These cells, which we designated AG-haESCs, express classical ESC markers, are pluripotent, and contribute to various tissues including the germline upon injection into diploid blastocysts.
Generation of genetically modified mice by oocyte injection of androgenetic haploid embryonic stem cells.
Specimen part
View SamplesHaploid cells are amenable for genetic analysis because they contain only one set of chromosomes. Here,we report the derivation of haESCs from monkey parthenogenic blastocysts. These cells, which we designated PG-haESCs (parthenogenic haploid embryonic stem cells), express classical ESC markers, are pluripotent, and can differentiate to different cell lines from all three embryonic germ layers in vivo and in vitro.
Generation of haploid embryonic stem cells from Macaca fascicularis monkey parthenotes.
Specimen part
View SamplesThe WHV/c-myc transgenic mouse is an animal model of hepatocarcinogenesis that can exquisitely mimic the cancer staging in human Hepatocellular carcinoma (HCC), in which the c-myc oncogene is activated by adjacent woodchuck hepatitis virus (WHV) DNA sequences. Compared to other models of c-myc transgenic mice, WHV/c-myc mice stably develop HCC with a relatively short latent period of 8 to 12 months, with a high (near 100%) tumor incidence.
No associated publication
Age
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.
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 Samples