Project description:MicroRNAs are likely to play pivotal roles in both stem cells and cancer, and are further promising candidates for future therapeutic purposes. To understand the role of miR206 in mammary cell differentiation, we profiled the transcription of mamary stem-like cells, comparing control HC11 cells (unspecific miRNA mimic treated) with HC11 cells transfected with miRNA-206 mimic.
Project description:In this study we have used a murine mammary epithelial cell line (HC11) with stem cell characteristics and made a thorough investigation of global gene-expression changes during mammary stem cell differentiation.
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.
Project description:The aim of the experiment is to investigate whether megakaryoblastic leukemia factor-1 (MKL1) induces tenascin-C in normal mammary epithelial HC11 and tumor mammary epithelial 4T1 cell lines, as well as to identify other genes that are transcriptionally regulated by MKL1. For this purpose, we compared the transcriptomes of HC11 and 4T1 cell lines stably expressing the full length (FL) MKL1 protein (HC11-FL and 4T1-FL cell lines) to respective control cell lines stably transfected with an empty vector (HC11-control and 4T1-control cell lines).