Project description:Mammalian neural stem/progenitor cells (NSPCs) sequentially generate neurons and glia during central nervous system (CNS) development. Several transcription factors and microRNAs (miRNAs) are involved in the temporal regulation of NSPC differentiation. miRNA-153 (miR-153) as a modulator of NSPC specification. Overexpression (OE) of miR-153 delayed the onset of astrogliogenesis and maintained NSPCs in an undifferentiated state in vitro. miR-153-OE and control NSPCs (tertiary neurospheres (TNs) derived from mouse ES Cells via embryoid body formation) subjected to the gene expression microarray analysis.
Project description:Mammalian neural stem/progenitor cells (NSPCs) sequentially generate neurons and glia during central nervous system (CNS) development. Several transcription factors and microRNAs (miRNAs) are involved in the temporal regulation of NSPC differentiation. miRNA-153 (miR-153) as a modulator of NSPC specification. Overexpression (OE) of miR-153 delayed the onset of astrogliogenesis and maintained NSPCs in an undifferentiated state in vitro.
Project description:Murine bone marrow-derived mast cells (BMMCs) transduced with pAPM lentiviruses overexpressing miR-221 vs control overexpressing miR-221m.
Project description:Omentum conditioned medium (OCM) is known to enhance ovarian cancer oncogenesis. In this study, miR-33b exerts tumor suppressive effects on ovarian cancer cells in response to omentum conditioned medium (OCM) treatment. To identify the molecular mechanism and main biological pathways involved in the tumor inhibiting activity by miR-33b in the ovarian cancer metastasis. To achieve this, miR-33b was stably overexpressed in ovarian cancer cell line ES-2, and the protein expression profile of miR-33b overexpressing ES-2 cells upon OCM treatment was determined.
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.