Wnt9b is expressed in the ureteric bud of the kidney at all stages of development. The Wnt9b cneo allele functions as a partial loss of function. Wnt9bcneo/cneo mutant kidneys initially develop normally but exhaust their nephron progenitor cells by E15.5. Here, we have compared expression between Wnt9bcneo/+ and Wnt9bcneo/cneo kidneys. Additional urogenital tissue (adrenal glands, reproductive tracts and bladder) may have been included in some samples.
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Specimen part
View SamplesWnt9b is expressed in the ureteric bud of the kidney at all stages of development. In Wnt9b mutants, the ureteric bud forms but the metanephric mesenchyme is never induced to undergo differentiation.
Myc cooperates with β-catenin to drive gene expression in nephron progenitor cells.
Specimen part
View SamplesEfferent inhibition of cochlear outer hair cells is mediated by nicotinic cholinergic receptors containing alpha9 (a9) and alpha10 subunits. Mice lacking a9 nicotinic subunits fail to exhibit classic olivocochlear responses and are characterized by abnormal synaptic morphology at the base of outer hair cells. To detail molecular changes induced upon the loss of a9 subunit, we sampled cochlear RNA from wild type and a9 null mice at postnatal (P) days spanning periods of synapse formation and maturation (P3, P7, P13 and P60). Our findings point to a delay in cochlear maturation starting at the onset of hearing (P13), as well as an up-regulation of various GABA receptor subunits in adult mice lacking the a9 nicotinic subunit.
Lack of nAChR activity depresses cochlear maturation and up-regulates GABA system components: temporal profiling of gene expression in alpha9 null mice.
Specimen part
View SamplesThe significant changes of hematopoietic cells induced by Xbp1S expression indicate that there is global alteration in gene expression. UPR induces transcription of Xbp1, and phosphorylation of the ER transmembrane kinase IRE1 initiates UPR-mediated mRNA splicing of Xbp1, resulting in the production of Xbp1S, an active form of a basic leucine zipper transcription factor. In the present study, Xbp1S retrovirus vector infected 32cl3 cells show cell cycle arrest and myeloid differentiation. Xbp1S may modulate important genes of differentiation and the cell cycle.
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Specimen part
View SamplesRNA from wt and SIN1 knock-out MEF cell lines were compared
mTORC2 Responds to Glutamine Catabolite Levels to Modulate the Hexosamine Biosynthesis Enzyme GFAT1.
Specimen part
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