Project description:the goal of the study was to compare gene expression between control and Pbx1; Emx1-cre mutant corteces at e15.5 E15.5 whole cortex was dissected for the analysis. Control embryo genotype was Pbx1F/+. Mutant embryo genotype was Pbx1F/-; Emx1-cre. 4 corteces of each genotype were used for the analysis: 4 controls and 4 mutants, 8 samples total.
Project description:the goal of the study was to compare gene expression between control and Pbx1; Emx1-cre mutant corteces at e12.5 E12.5 whole cortex was dissected for the analysis. Control embryo genotype was Pbx1F/+. Mutant embryo genotype was Pbx1F/-; Emx1-cre. 4 corteces of each genotype were used for the analysis: 4 controls and 4 mutants, 8 samples total.
Project description:System-wide quantification of the cell surface proteotype and identification of extracellular glycosylation sites is challenging when sample is limiting. We miniaturized and automated the previously described Cell Surface Capture technology increasing sensitivity, reproducibility, and throughput. We used this technology, which we call autoCSC, to create population-specific surfaceome maps of developing mouse B cells and used targeted flow cytometry to uncover developmental cell subpopulations.
Project description:To gain insight into the toxicity induced by VX, a mass spectrometry based phosphoproteomics approach was employed to understand the signaling modulated by VX toxicity in piriform cortex region of the rat brain. We have employed isobaric-based TMT labeling and titanium dioxide- based enrichment strategy to identify and quantify the changes that are modulated by VX. We observed a temporal association of changes in the phosphorylation status of proteins over a 24 hour time course in rats exposed to 1x LD50 VX, with the most notable changes by the first measured time point, 1 hour post exposure. These data fell into five main functional classes of proteins directly or indirectly influenced by changes in phosphorylation: 1) Ion channels/transporters, including ATPases, 2) Kinases/Phosphatases, 3) GTPases, 4) Structural related proteins, and 5) Transcriptional regulatory proteins. This study is the first quantitative phosphoproteomics analysis of VX toxicity in the brain. Understanding the toxicity and compensatory signaling mechanisms will improve the understanding of the complex toxicity of VX in the brain, and aid in the elucidation of novel molecular targets allowing for improved countermeasure development.
Project description:To explore the cellular pathways and the molecular functions affected by a novel biogenic amine, (3-HKA), we performed a label free quantitative (LFQ) proteomic analysis of mouse lymphatic endothelial cells (LEC), and primary dendritic cells, treated with IFNgammaplus or minus 3-HKA. Biological triplicates, of total cell lysates, were fractionated by one-dimensional gel electrophoresis (1DEF) and the “in gel” tryptic derived peptides analyzed by nano-LC-ESI-MS/MS on a Q Exactive HF quadrupole orbitrap mass spectrometer (Thermo Fisher Scientific, Waltham, MA, USA). LFQ analysis highlighted that 3-HKA downregulated many of the inflammatory pathways, more notably JAK/STAT1 and NFkB, associated with IFNgamma activation.
Project description:This SuperSeries is composed of the following subset Series: GSE17757: Gene expression data from primate postnatal brain in prefrontal cortex: time course GSE18012: miRNA expression data from human postnatal brain in prefrontal cortex: time course GSE18013: miRNA expression data from rhesus macaque postnatal brain in prefrontal cortex: time course Refer to individual Series
Project description:Differential expression of genes and proteins, as well as physiological processes, along the hepatic acinus, known collectively as hepatic zonation, is a fundamental feature of hepatic physiology. However, the precise cellular location of only a relatively small proportion of the ~14,000 genes expressed in the liver is known. This is critical information for understanding hepatic physiology as well as for the accurate targeting of gene transfer vectors for gene therapy. We have employed laser capture microdissection (LCM) and unbiased transcriptomic analysis of the normal adult mouse liver to define gene expression in a very distinct population of cells in the acinus, the glutamine-synthetase sub-compartment of perivenous hepatocytes, encompassing a one- to two-layer of cells surrounding the centrilobular vein. We confirmed the location of a number of genes whose expression is known to be restricted to these cells by virtue of immunohistochemistry or in situ hybridization (Slc1a2, Glul, Rhbg). We also identified genes whose expression had not previously been reported to be enriched in these cells (e.g. Sp5, Vldlr, Lpl, Gabrb3, Rcan2). Transcription factor analysis of the differentially expressed genes suggested important roles, in these cells, for members of the polycomb group, Wt1 and Tbx3. Collectively, our findings highlight the utility of combined LCM and transcriptome analysis for the identification of novel functions of distinct subclasses of hepatocytes. We plan to extend this approach to the mapping of physiological function across hepatic acini of the human liver. Comparison of mRNA expression by two hepatic cell populations: the glutamine synthetase-subcompartment of the perivenous compartment and zones 1+2 of the hepatic acinus Cells were isolated by laser capture microdissection and mRNA extracted by standard protocol.
Project description:In Balb/c mice, the presence of effector CD8 T cells in lungs after intra-nasal (IN) immunization with replication deficient recombinant Adenovirus expressing the 85A antigen from Mycobacterium tuberculosis (MTb) (Ad85A) correlates with protection against aerosol MTb infection. In order to identify differentially expressed transcripts which contribute to protection by IN immunized lung CD8 T cells, total RNA from CD8 T cells isolated from target tissue (lungs) and lymphoid organ (spleen ) after a protective (IN) and non-protective (intradermal, ID) immunization regime will be analyzed in a whole-genome microarray study. Total RNA from CD8 T cells isolated from lungs or spleens of Balb/c mice 3 weeks post-immunization with Ad85A through the IN (protective) or ID (non-protective) route will be compared.
Project description:This dataset covers the development of 6 organs (brain, cerebellum, heart, kidney, liver and testis) from embryonic day 93 to adulthood.
Project description:Posttraumatic stress disorder (PTSD) is a prevalent psychiatric disorder. Several studies have attempted to characterize molecular alterations associated with PTSD, but most findings were limited to the investigation of specific cellular markers in the periphery or defined brain regions. In the current study, we aimed to unravel affected molecular pathways/mechanisms in the fear circuitry associated with PTSD. We interrogated a foot shock induced PTSD mouse model by integrating proteomics and metabolomics profiling data. Alterations at the proteome level were analyzed using in vivo 15N metabolic labeling combined with mass spectrometry in prelimbic cortex (PrL), anterior cingulate cortex (ACC), basolateral amygdala (BLA), central nucleus of amygdala (CeA) and CA1 of hippocampus between shocked and non-shocked (control) mice, with and without fluoxetine treatment.