Project description:A neuronal PI(3,4,5)P3-dependent program of oligodendrocyte precursor recruitment and myelination was identified in mice that conditionally lack PTEN in cerebellar granular cells (PTEN cKO) Expression analysis was performed with RNA obtained selectively from cerebellar granular cell layer of PTEN conditional null mutants and controls
Project description:DOT1L as methyltransferase of H3K79 is implicated in brian development. Here, we further defined DOT1L function within the granular neurons during cerebellar development using ChIP-seq of H3K79 dimethylation of isolated cerebellar granular neurons and progenitors. Thereby we compared samples treated with a DOT1L inhibitor versus DMSO treated cells. The data sets reveals new important targets of DOT1L, which ensure a correct development of the cerebellum.
Project description:Study on selective vulnerability of certain brain regions to oxidative stress. Here we selected 4 brain regions (hippocampal CA1 and CA3, cerebral cortex, and cerebellar granular layer) to study this phenomenon. Keywords: Comparative analysis of different regions of the brain.
Project description:We designed a large scale gene expression study in cerebellar external granular layer in Ts1Cje mice at P0 in order to measure the effects of trisomy 21 on in a enriched cell population (dissected layer) that is affected in Down syndrome in order to correlate gene expression changes to the phenotype observed. Keywords: Down syndrome, Ts1Cje, EGL, hypoplasia
Project description:Cerebellar post-natal development is particularly sensitive to thyroid hormone and low levels of thyroid hormone (hypothyroidism) result in permanent defects in cerebellar architecture and function. All cell types of the cerebellum are affected, but the main sign of hypothyroidism in mice is the persistence of the external granular layer, composed of mitotic neuronal precursors at P21. To make the genetic link between thyroid hormone and cerebellar development, we sought to identify new thyroid hormone target genes, in particular in granule cells which represent the vast majority of cerebellar cells. Primary cultures of cerebellar neurons were made by dissociation of cerebella from newborn wild-type mice. These cells were plated 48 hours in serum-free medium to avoid invasion of the culture by glial cells. In order to include a kinetic and a maximum number of target genes, several cultures were either treated or left untreated as controls for 6 hours (T1), 16 hours (T2), 24 hours (T3) or 48 hours (T4) and results were pairwise compared for each time point.
Project description:We designed a large scale gene expression study in cerebellar external granular layer in Ts1Cje mice at P0 in order to measure the effects of trisomy 21 on in a enriched cell population (dissected layer) that is affected in Down syndrome in order to correlate gene expression changes to the phenotype observed. Keywords: Down syndrome, Ts1Cje, EGL, hypoplasia We analyzed gene expression in the EGL of Ts1Cje and euploid mice at P0 using pangenomic Illumina mouse-6 v1.1 expression beadchips containing 46 632 probes representing approximately 19 000 mouse genes. 18 samples from individual cerebellar EGL were hybridized on 18 microarrays (6 by slide). On each slide, we hybridized 6 samples frome the same litter.
Project description:Cerebellar post-natal development is particularly sensitive to thyroid hormone and low levels of thyroid hormone (hypothyroidism) result in permanent defects in cerebellar architecture and function. All cell types of the cerebellum are affected, but the main sign of hypothyroidism in mice is the persistence of the external granular layer, composed of mitotic neuronal precursors at P21. To make the genetic link between thyroid hormone and cerebellar development, we sought to identify new thyroid hormone target genes, in particular in granule cells which represent the vast majority of cerebellar cells.
Project description:Study on selective vulnerability of certain brain regions to oxidative stress. Here we selected 4 brain regions (hippocampal CA1 and CA3, cerebral cortex, and cerebellar granular layer) to study this phenomenon. Experiment Overall Design: Neurons were collected from the 4 regions of the rat brain and subjected to Affymetrix RAE230A analysis, in order to identify genes related to the differential vulnerability of the neurons to oxidative stress.
Project description:Gene expression analysis of P3 Dot1l conditional knockout mice in the cerebellum and of cerebellar granular neuron progenitors (CGNPs) or cerebellar granular neurons (CGNs) isolated from P7 wt mice upon DOT1L inhibition
