Project description:The protein Dicer is required for microRNA (miRNA) biogenesis, and therefore Dicer-deficient cells lack all mature, functional miRNAs. Here we investigated the binding of the PRC2 component Ezh2 in wildtype and Dicer-deficient mouse embryonic stem cells genomewide using ChIP-sequencing analysis. Examination of Ezh2 binding in mouse ES cells either proficient (wildtype) or deficient (KO) of the protein Dicer
Project description:The protein Dicer is required for microRNA (miRNA) biogenesis, and therefore Dicer-deficient cells lack all mature, functional miRNAs. Here we investigated the binding of the PRC2 component Ezh2 in wildtype and Dicer-deficient mouse embryonic stem cells genomewide using ChIP-sequencing analysis.
Project description:Macrophages were derived from the bone-marrow of 3 x fl/+ Dicer LysCre +/- (wild-type) and 3 x fl/fl Dicer LysCre +/- mice and stimulated with IL-4 (50ng/mL) for 72h. Total RNA was isolated and analyzed by gene array. In this experiment, we derived Dicer deficient bone-marrow macrophages using Dicer fl/+ LysM-Cre by Dicer fl/+ crossed mice to obtain Dicer fl/fl LysM-cre progeny (and Dicer deficient macrophages). Next, we studied the effects of IL-4 stimulation in macrophage with a deficiency in Dicer/microRNAs.
Project description:The protein Dicer is required for microRNA (miRNA) biogenesis. Dicer-deficient cells therefore lack almost all mature, functional miRNAs. We investigated the role of miRNAs in regulation of gene expression in mouse ES cells by analysing gene expression in either wildtype or Dicer-deficient cells grown either under asynchronous growth conditions, or cells in the early G1 phase of the cell cycle.
Project description:Small RNAs, such as miRNAs and siRNAs, are involved in gene regulation in a variety of systems, including mouse oocytes. Dicer is a ribonuclease III enzyme essential for miRNA and siRNA biosynthesis. In an effort to uncover the function of small RNAs during oocyte growth, we specifically deleted Dicer in growing oocytes and analyzed the global pattern of gene expression in these Dicer-deficient oocytes. Germinal vesicle-intact, fully grown oocytes were collected from eCG-primed wild-type or Dicer-deficient female mice and freed of attached cumulus cells by pipetting. Twenty oocytes per mouse were used for RNA extraction and hybridization on the MOE430 v2 Affymetrix microarray platform. Oocytes from four wild-type and four Dicer-knockout mice were analyzed.