Project description:The subependymal zone (SEZ), also known as the subventricular zone (SVZ), constitutes a neurogenic niche that persists during post-natal life. To investigate the cellular diversity of this brain region during human adulthood, we characterized the complete cellular niche of the adult human SEZ by single-nucleus RNA sequencing (snRNAseq), in youth and middle-aged adults.
Project description:We identified the Igfbpl1 gene by RNAseq of the neural precursor cells (NPCs) of the mice subventricular zone (SVZ), as an important gene released by SVZ-NPCs that play an important role in control of the striatal homeostasis and in particular involved in the cognitive processes and decision-making.
Project description:Astroglial cells in the adult brain constitute a heterogeneous population endowed with region-specific properties. Recently, they have acquired greater relevance as active components of the adult neural stem cell (aNSC) niches. Astrocytes located in the vicinity of aNSC reservoirs are thought to regulate aNSC behaviour. We have compared the function of glial cells isolated from the postnatal and adult subventricular zone and hippocampus (two stem cell niches, where aNSCs self-renew and give rise to immature neurons), from the olfactory bulb (a neurogenic region where the immature neurons cease to proliferate and terminally differentiate) and from a non-stem and non-neurogenic area such as the ventral mesencephalon. Co-culture experiments demonstrate that subventricular zone glial cells secrete soluble signals that promote NSC self-renewing divisions. We used microarrays to detail the global gene expression of astroglial cells isolated from four different brain regions (olfactory bulb, ventral mesencephalon, hippocampus and subventricular zone) and identified up-regulated genes coding for secreted proteins in astrocytes from the subventricular zone. Primary astrocytes were cultured from four CD-1 mouse brain regions and cells were employed for RNA extraction and hybridization on Affymetrix microarrays. Primary tissue for the astrocyte cultures was dissected from four postnatal day 3 littermate pups. The tissue from the three pups was pooled in order to reduce individual differences of expression profiles.
Project description:Transcriptional profiling of subventricular zone (SVZ) progenitors comparing control healthy mice to mice induced to develop an autoimmune demyelination (EAE model). Goal was to unveil genes involved in demyelination-induced reactivity of SVZ progenitors.
Project description:As Prdm16 deficiency reduces self-renewal potential and depletes neural stem cells in culture we decided to investigate the underlying molecular mechanisms of the neural stem cells depletion in the Prdm16 deficient animals. For the experiment we used Prdm16Gt(OST67423)Lex (Prdm16LacZ) genetrap mice obtained from the NIH Mutant Mouse Regional Resource Center (http://www.mmrrc.org/). We compared the gene expression profiles of uncultured ventricular zone cells from newborn Prdm16LacZ/LacZ (KO), Prdm16LacZ/+(HET), and Prdm16+/+ (WT) mice. The uncultured ventricular zone cells from newborn Prdm16LacZ/LacZ, Prdm16LacZ/+, and Prdm16+/+ mice were dissected from the brains and placed into the Trizol reagent. Purified RNA was reverse transcribed and amplified using the WT-Ovation™ Applause WT/Amp RNA amplification system (NuGEN Technologies,) following the manufacturer’s instructions. Sense strand cDNA was fragmented and labeled using the FL-Ovation™ cDNA Biotin Module V2 (NuGEN). 2.5µg of labeled cDNA were hybridized to Affymetrix Mouse Gene ST 1.0 microarrays.
Project description:Female mice treated on post-natal day 1-5 with corn-oil control or 50 mg/kg genistein were evaluated as adults for the uterine response to 1 mg/kg nM dexamethasone (or saline vehicle). Adult mice were adrenalectomized and ovariectomized 2 weeks prior to dexamethasone (or vehicle) treatment.
Project description:Neural stem cells from different brain regions show differencies in gene expression patterns and physiological functions. We used microarrays to find differential gene expression between the neuralstem cells from the subventricular zone of lateral ventricle and the subventricular zone of third ventricle. Cultured neural stem cells from embryonic day 17.5 mouse embryos were selected for RNA extraction and hybridization on Affymetrix microarrays. We sought to obtain embryonic neural stem cell cultures from three indipendent females.
Project description:Microarray experiment to identify changes in gene expression in 18.5 day post coitum Tex19.1-/- mouse placenta. Tex19.1 is expressed in trophectoderm-derived cells in the placenta. Tex19.1-/- placentas are small and have defects in junctional zone and labyrinth layers of the placenta, Tex19.1-/- embryos exhibit intra-uterine growth retardation. Data provides insight into the changes in gene expression and cell composition in Tex19.1-/- placentas. Six E18.5 Tex19.1-/- placentas (KO: four XX, two XY), four E18.5 Tex19.1+/- littermate control placentas (HET: four XX), and two E18.5 Tex19.1+/+ littermate control placentas (WT: two XY) are included in the analysis.
