Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA90331 | ENA |
REPOSITORIES: ENA
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Project description:The mammalian telencephalon plays critical roles in cognition, motor function, and emotion. While many of the genes required for its development have been identified, the distant‐acting regulatory sequences orchestrating their in vivo expression are mostly unknown. Here we describe a digital atlas of in vivo enhancers active in subregions of the developing telencephalon. We identified over 4,600 candidate embryonic forebrain enhancers and studied the in vivo activity of 329 of these sequences in transgenic mouse embryos. We generated serial sets of histological brain sections for 145 reproducible forebrain enhancers, resulting in a publicly accessible web‐based enhancer atlas comprising over 33,000 sections. We show how this large collection of annotated telencephalon enhancers can be used to study the regulatory architecture of individual genes, to examine the sequence motif content of enhancers, and to drive targeted reporter or effector protein expression in experimental applications. Furthermore, we used epigenomic analysis of human and mouse cortex tissue to directly compare the genome‐wide enhancer architecture in these species. This atlas provides a primary resource for investigating gene regulatory mechanisms of telencephalon development and enables studies of the role of distant‐acting enhancers in neurodevelopmental disorders. Examination of p300 binding in mouse embryonic stage 11.5 forebrain, mouse postnatal (P0) cortex tissue and human fetal (gestational week 20) cortex
2013-01-29 | E-GEOD-42881 | biostudies-arrayexpress
Project description:Introgressed variants from other species can be an important source of genetic variation because they may arise rapidly, can include multiple mutations on a single haplotype, and have often been pretested by selection in the species of origin. Although introgressed alleles are generally deleterious, several studies have reported introgression as the source of adaptive alleles-including the rodenticide-resistant variant of Vkorc1 that introgressed from Mus spretus into European populations of Mus musculus domesticus. Here, we conducted bidirectional genome scans to characterize introgressed regions into one wild population of M. spretus from Spain and three wild populations of M. m. domesticus from France, Germany, and Iran. Despite the fact that these species show considerable intrinsic postzygotic reproductive isolation, introgression was observed in all individuals, including in the M. musculus reference genome (GRCm38). Mus spretus individuals had a greater proportion of introgression compared with M. m. domesticus, and within M. m. domesticus, the proportion of introgression decreased with geographic distance from the area of sympatry. Introgression was observed on all autosomes for both species, but not on the X-chromosome in M. m. domesticus, consistent with known X-linked hybrid sterility and inviability genes that have been mapped to the M. spretus X-chromosome. Tract lengths were generally short with a few outliers of up to 2.7 Mb. Interestingly, the longest introgressed tracts were in olfactory receptor regions, and introgressed tracts were significantly enriched for olfactory receptor genes in both species, suggesting that introgression may be a source of functional novelty even between species with high barriers to gene flow.
| S-EPMC8784167 | biostudies-literature
Project description:PURPOSE: To provide a detailed gene expression profile of the normal postnatal mouse cornea. METHODS: Serial analysis of gene expression (SAGE) was performed on postnatal day (PN)9 and adult mouse (6 week) total corneas. The expression of selected genes was analyzed by in situ hybridization. RESULTS: A total of 64,272 PN9 and 62,206 adult tags were sequenced. Mouse corneal transcriptomes are composed of at least 19,544 and 18,509 unique mRNAs, respectively. One third of the unique tags were expressed at both stages, whereas a third was identified exclusively in PN9 or adult corneas. Three hundred thirty-four PN9 and 339 adult tags were enriched more than fivefold over other published nonocular libraries. Abundant transcripts were associated with metabolic functions, redox activities, and barrier integrity. Three members of the Ly-6/uPAR family whose functions are unknown in the cornea constitute more than 1% of the total mRNA. Aquaporin 5, epithelial membrane protein and glutathione-S-transferase (GST) omega-1, and GST alpha-4 mRNAs were preferentially expressed in distinct corneal epithelial layers, providing new markers for stratification. More than 200 tags were differentially expressed, of which 25 mediate transcription. CONCLUSIONS: In addition to providing a detailed profile of expressed genes in the PN9 and mature mouse cornea, the present SAGE data demonstrate dynamic changes in gene expression after eye opening and provide new probes for exploring corneal epithelial cell stratification, development, and function and for exploring the intricate relationship between programmed and environmentally induced gene expression in the cornea. Keywords: other
2004-01-02 | GSE887 | GEO
Project description:Embryonic day (E)12.5 whole murine embryos, E11.5 - E14.5 whole murine embryos, E11.5 - E14.5, post-natal day (P)3 and P35 murine forelimbs, E14.5 brains, and COL1A2-mutant and COL1A2-WT forelimbs were fractionated and specific fractions were analyzed via LC-MS/MS. Aha-enrichment experiments consisted of in vivo protein labeling with azidohomoalanine (Aha) followed by tissue fractionation of the forelimbs and enrichment of labeled ECM proteins from the final IN pellet ('enriched'). 'Unenriched samples', or the background from which newly synthesized proteins were enriched from, were also analyzed via LC-MS/MS.
2020-06-05 | MSV000085556 | MassIVE
Project description:TESS_E14.5_Adult series: Set of microarray expreriments used to identify genes of TESS library preferentially expressed in Embryonic E14.5 mouse telencephalon Keywords: other
2004-07-31 | GSE1598 | GEO
Project description:Translational research is commonly performed in the C57B6/J mouse strain, chosen for its genetic homogeneity and phenotypic uniformity. Here, we evaluate the suitability of the white-footed deer mouse (Peromyscus leucopus) as a model organism for aging research, offering a comparative analysis against C57B6/J and diversity outbred (DO) Mus musculus strains. Our study includes comparisons of body composition, skeletal muscle function, and cardiovascular parameters, shedding light on potential applications and limitations of P. leucopus in aging studies. Notably, P. leucopus exhibits distinct body composition characteristics, emphasizing reduced muscle force exertion and a unique metabolism, particularly in fat mass. Cardiovascular assessments showed changes in arterial stiffness, challenging conventional assumptions and highlighting the need for a nuanced interpretation of aging-related phenotypes. Our study also highlights inherent challenges associated with maintaining and phenotyping P. leucopus cohorts. Behavioral considerations, including anxiety-induced responses during handling and phenotyping assessment, pose obstacles in acquiring meaningful data. Moreover, the unique anatomy of P. leucopus necessitates careful adaptation of protocols designed for Mus musculus. While showcasing potential benefits, further extensive analyses across broader age ranges and larger cohorts are necessary to establish the reliability of P. leucopus as a robust and translatable model for aging studies.
| S-EPMC11335981 | biostudies-literature
Project description:Quantitative top down analysis of histone H4 proteoforms in the mouse forebrain and hindbrain at 25 and 47 days of age.
| MSV000090249 | MassIVE
Project description:Identification of the mouse embryonic germ cell transcriptome
2015-08-13 | GSE70360 | GEO
Project description:MYST4 (QKF/KAT6B/MORF) transcriptional targets in the adult dorsal cortex and E12.5 embryonic dorsal telencephalon
| PRJNA127743 | ENA