Project description:To get insight into the genetic characteristics of hyper active mutant line of rat, SPORTS, we compared gene expression profiles of the sedentary SPORTS rat and the sedentary wild type rat. Using RNA extracted from the brain of these rats, we performed microarray analysis. Subsequent GO analyses revealed that genes belonging to norepinephrine synthetic pathway and coagulation were upreguated. These results were consistent with phenotypes, such as hyper activity and thrombotic tendency, which were reported for SPORTS rat.
Project description:To get insight into the genetic characteristics of hyper active mutant line of rat, SPORTS, and the effect of exercise on gene expression, we compared gene expression profiles of exercised SPORTS rat, sedentary SPORTS rat, and sedentary wild type rat. Using RNA extracted from the muscle of these rats, we performed microarray analysis. Subsequent GO analyses revealed that genes belonging to muscle development and glycolysis were upregulated in exercised SPORTS rat compared to sedentary SPORTS rat, and genes related to coagulation were upreguated in sedentary SPORTS rat compared to wild type rat. These results were consistent with phenotypes, such as hyper activity and thrombotic tendency, which were reported for SPORTS rat.
Project description:In order to establish a rat embryonic stem cell transcriptome, mRNA from rESC cell line DAc8, the first male germline competent rat ESC line to be described and the first to be used to generate a knockout rat model was characterized using RNA sequencing (RNA-seq) analysis.
Project description:Analysis of LBNF1 rat testes from controls, containing both somatic and all germ cell types and from irradiated rats in which all cells germ cells except type A spermatgogonia are eliminated. Results provide insight into distinguishing germ and somatic cell genes and identification of somatic cell genes that are upregulated after irradiation.
Project description:Oligodendrocytes undergo extensive changes as they differentiate from progenitors into myelinating cells. To better understand the; molecular mechanisms underlying this transformation, we performed a comparative analysis using gene expression profiling of A2B5+; oligodendrocyte progenitors and O4+ oligodendrocytes. Cells were sort-purified ex vivo from postnatal rat brain using flow cytometry. Using Affymetrix microarrays, 1707 transcripts were identified with a more than twofold increase in expression inO4+oligodendrocytes. Many genes required for oligodendrocyte differentiation were upregulated in O4+ oligodendrocytes, including numerous genes encoding; myelin proteins. Transcriptional changes included genes required for cell adhesion, actin cytoskeleton regulation, and fatty acid and; cholesterol biosynthesis. At the O4+ stage, there was an increase in expression of a novel proline-rich transmembrane protein (Prmp). Localized to the plasma membrane, Prmp displays adhesive properties that may be important for linking the extracellular matrix to the; actin cytoskeleton. Together, our results highlight the usefulness of this discovery-driven experimental strategy to identify genes relevant; to oligodendrocyte differentiation and myelination. Experiment Overall Design: Whole brain dissociates were prepared from one litter of 10 male postnatal day 7 rat pups for each of the 5 A2B5 bioligcal replicates and the 4 O4+ bioligical replicates. Total RNA was extracted from single A2B5+ and single O4+ cells sorted directly from postnatal day7 rat whole brain dissociates using flow cytometry.