Mus musculus
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ABSTRACT:
PROVIDER: PRJNA146509 | ENA |
REPOSITORIES: ENA
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Project description:Investigate the effect of jhdm1b on Oct4 mediated reprogramming Investigate the effect of vitamin C on the function of jhdm1b oct4 and jhdm1b infected MEF with or without vitamin C treatment
2011-11-17 | E-GEOD-32994 | biostudies-arrayexpress
Project description:To further understand the mechanism of reprogramming, the mouse embryonic fibroblast cells were infected with Oct4, Klf4, c-Myc and Sox2 with special sequence. 1) Oct4 and Klf4 containing retrovirus was delivered on day 0. 2) Oct4, Klf4 and c-Myc were delivered on Day 1.5. 3) c-Myc and Sox-2 were deivered on Day 3. 4) Sox2 were delivered on Day 4.5. 5) Vitamin C containging medium were used from Day 6. The gene expression of Day 0 (MEF), Day 1.5, Day 3, Day 4.5 and Day 6 were analyzed with micro array to indentify the possible underlying mechanism. Especially the factors related to MET/EMT, cell cycle and epigenetic were focused. MEF cells were subjected for reprogramming with special protoocl: 1) Oct4 and Klf4 containing retrovirus were delivered on day 0. 2) Oct4, Klf4 and c-Myc were delivered on Day 1.5. 3) c-Myc and Sox-2 were deivered on Day 3. 4) Sox2 were delivered on Day 4.5. 5) Vitamin C containging medium were used from Day 6. RNA on Day 0 (MEF), Day 1.5, Day 3, Day 4.5 and Day 6 were collected for analysis.
2012-07-11 | E-GEOD-39260 | 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:Next Generation Sequencing with differdent pluripotent transcript factor overexpression in MEF Somatic cells can be reprogrammed into induced pluripotent stem cells (iPSCs) by defined factors. The low efficiency of reprogramming limited the potential application of iPSCs. Here we found that knockdown LSD1 , which demethylates histone H3 Lys 4 or 9 , could increase iPSCs generation. It has been reported that LSD1 interaction with Oct4 which is the core factor of reprogramming. So we try to find out the different of overexpression Oct4 or Kllf4/Sox2 in MEF and LSD1 inhibitor. Retrovirus-mediated different pluripotent transcript factor overexpression in MEF cells after 4 days collect mRNA profiles processing with Illumina MiSeq; MEF, Mouse Embryonic Fibroblast O, MEF infected with Oct4 KS,MEF infected with Klf4 and Sox2 OSK, MEF infected with Oct4 Klf4 and Sox2 T20, MEF infected with Oct4 Klf4 and Sox2 and treated with 20nm LSD1 inhibitor Tranylcypromine
2015-09-17 | E-GEOD-61694 | biostudies-arrayexpress
Project description:Nucleolus-associated DNA was isolated from MEF cells before and after conditional knock-out of UBF and hybridized against genomic DNA in biological replicates. Two different types of immortalized MEF cells were used. MEFs were immortalized by genetic depletion of p53, iMEFs were immortalized by transfection of the SV40 Tt antigen.
2018-02-02 | GSE80441 | GEO
Project description:To further understand the mechanism of reprogramming, the mouse embryonic fibroblast cells were infected with Oct4, Klf4, c-Myc and Sox2 with special sequence. 1) Oct4 and Klf4 containing retrovirus was delivered on day 0. 2) Oct4, Klf4 and c-Myc were delivered on Day 1.5. 3) c-Myc and Sox-2 were deivered on Day 3. 4) Sox2 were delivered on Day 4.5. 5) Vitamin C containging medium were used from Day 6. The gene expression of Day 0 (MEF), Day 1.5, Day 3, Day 4.5 and Day 6 were analyzed with micro array to indentify the possible underlying mechanism. Especially the factors related to MET/EMT, cell cycle and epigenetic were focused.
2012-07-12 | GSE39260 | 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:In a pilot experiment to reprogramme MEF into endoderm, we infected MEF with the Yamanaka´s factors (O: Oct4, K: Klf4, S: Sox2, M:Myc), FoxA2 (F) and Gata4 (G). Global gene expression of isolated clones was performed.
2012-08-30 | GSE37548 | GEO
Project description:BackgroundCopy number variation is an important dimension of genetic diversity and has implications in development and disease. As an important model organism, the mouse is a prime candidate for copy number variant (CNV) characterization, but this has yet to be completed for a large sample size. Here we report CNV analysis of publicly available, high-density microarray data files for 351 mouse tail samples, including 290 mice that had not been characterized for CNVs previously.ResultsWe found 9634 putative autosomal CNVs across the samples affecting 6.87% of the mouse reference genome. We find significant differences in the degree of CNV uniqueness (single sample occurrence) and the nature of CNV-gene overlap between wild-caught mice and classical laboratory strains. CNV-gene overlap was associated with lipid metabolism, pheromone response and olfaction compared to immunity, carbohydrate metabolism and amino-acid metabolism for wild-caught mice and classical laboratory strains, respectively. Using two subspecies of wild-caught Mus musculus, we identified putative CNVs unique to those subspecies and show this diversity is better captured by wild-derived laboratory strains than by the classical laboratory strains. A total of 9 genic copy number variable regions (CNVRs) were selected for experimental confirmation by droplet digital PCR (ddPCR).ConclusionThe analysis we present is a comprehensive, genome-wide analysis of CNVs in Mus musculus, which increases the number of known variants in the species and will accelerate the identification of novel variants in future studies.
| S-EPMC4490682 | biostudies-literature
Project description:BackgroundLong terminal repeat (LTR) retrotransposons make up a large fraction of the typical mammalian genome. They comprise about 8% of the human genome and approximately 10% of the mouse genome. On account of their abundance, LTR retrotransposons are believed to hold major significance for genome structure and function. Recent advances in genome sequencing of a variety of model organisms has provided an unprecedented opportunity to evaluate better the diversity of LTR retrotransposons resident in eukaryotic genomes.ResultsUsing a new data-mining program, LTR_STRUC, in conjunction with conventional techniques, we have mined the GenBank mouse (Mus musculus) database and the more complete Ensembl mouse dataset for LTR retrotransposons. We report here that the M. musculus genome contains at least 21 separate families of LTR retrotransposons; 13 of these families are described here for the first time.ConclusionsAll families of mouse LTR retrotransposons are members of the gypsy-like superfamily of retroviral-like elements. Several different families of unrelated non-autonomous elements were identified, suggesting that the evolution of non-autonomy may be a common event. High sequence similarity between several LTR retrotransposons identified in this study and those found in distantly-related species suggests that horizontal transfer has been a significant factor in the evolution of mouse LTR retrotransposons.
| S-EPMC395764 | biostudies-literature