Project description:Thyroid hormone has a positive effect on endochondral bone growth. Few studies have looked at the interaction between thyroid hormone exposures and intramembranous bone derived cells. We used microarray as one tool to determine the gene expression profile of intramembranous (calvarial) derived murine pre-osteoblsts after thyroxine exposure.
Project description:Thyroid hormone has a positive effect on endochondral bone growth. Few studies have looked at the interaction between thyroid hormone exposures and intramembranous bone derived cells. We used microarray as one tool to determine the gene expression profile of intramembranous (calvarial) derived murine pre-osteoblsts after thyroxine exposure. We isolated whole RNA from MC3T3-E1 cells treated with proliferation media or proliferation media with thyroxine at a dose of 10^-6 mol./liter for 3 or 7 days in culture. We then used an Affymetrix array and compared expression profiles between control and experimental treatments.
Project description:Effects of Ilex paraguariensis and Ligularia fischeri extracts on osteogenesis and bone microenvironment in mouse osteoblasts (MC3T3-E1)
Project description:Effects of Ilex paraguariensis and Ligularia fischeri extracts on osteogenesis and bone microenvironment in mouse osteoblasts (MC3T3-E1)
Project description:Recently, serotonin and serotonin reuptake inhibitor (SSRI) drugs have been shown to have an effect on the development and maintenance of bone. However, little is known about its role in craniofacial development. We used microarray as one tool to determine the gene expression profile of intramembranous (calvarial) derived murine pre-osteoblasts after citalopram (SSRI) exposure.
Project description:Thyroid hormone is know to effect growth and development. However little is know about the hormone thyroxine's effect on craniofacial growth and suture development. We used microarray as one tool to determine gene expression profile of wild type and craniosynostotic (Twist 1 +/-) suture cells after thyroxine exposure. We isolated whole RNA from Wild type C57BL6 and Twist 1 +/- suture derived calvarial cells and treated with proliferation media and with thyroxine 10^-6 mol/liter for 3 or 7 days in culture. We then used an Affymetrix array and compared expression profiles between control and experimental treatments.
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.