Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Transcription profiling of brain from mice with multiple sclerosis, Alzheimers disease and permanent mid-cerebral artery occlusion from stroke to compare of gene expression changes characterizing these three different central nervous system pathologies

ABSTRACT: Three mouse models of human central nervous system pathologies were selected for analyzing gene expression changes compared to wild type normal brain. The selected models are: TgAPP23 for Alzheimerï¾s disease (see Sturchler-Pierrat, C., Abramowski, D., Duke, M., Wiederhold, K.H., Mistl, C., Rothacher, S., Ledermann, B., B?rki, K., Frey, P., Paganetti, P.A., Waridel, C., Calhoun, M.E., Jucker, M., Probst, A., Staufenbiel, M. and Sommer, B. (1997) Two amyloid precursor protein transgenic mouse models with Alzheimer disease-like pathology. PNAS 94, 13287-13292), Tg6074 for multiple sclerosis (see Akassoglou K, Bauer J, Kassiotis G, Pasparakis M, Lassmann H, Kollias G and Probert L. (1998). Oligodendrocyte apoptosis and primary demyelination induced by local TNF/p55TNF receptor signaling in the central nervous system of transgenic mice: models for multiple sclerosis with primary oligodendrogliopathy. Am J Pathol. 153, 801-813) and permanent mid-cerebral artery occlusion for stroke (see Welsh, F.A., Sakamoto, T., McKee, A.E. and Sims, R.E. (1987) Effect of lactacidosis on pyridine nucleotide stability during ischemia in mouse brain. J Neurochem. 49, 846-851). Trangenic mice were grown to appropriate age, so that they would manifest the symptoms of disease or disease was induced by a surgical procedure to adult mice. Mice were sacrificed and half brains were removed at selected time points after disease onset for RNA extraction and subsequent array hybridization.

ORGANISM(S): Mus musculus

DISEASE(S): multiple sclerosis

SUBMITTER: Vivian Tseveleki

PROVIDER: E-MTAB-1 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Comparative gene expression analysis in mouse models for multiple sclerosis, Alzheimer's disease and stroke for identifying commonly regulated and disease-specific gene changes.

Tseveleki Vivian V Rubio Renee R Vamvakas Sotiris-Spyros SS White Joseph J Taoufik Era E Petit Edwige E Quackenbush John J Probert Lesley L

Genomics 20100507 2

The brain responds to injury and infection by activating innate defense and tissue repair mechanisms. Working upon the hypothesis that the brain defense response involves common genes and pathways across diverse pathologies, we analysed global gene expression in brain from mouse models representing three major central nervous system disorders, cerebral stroke, multiple sclerosis and Alzheimer's disease compared to normal brain using DNA microarray expression profiling. A comparison of dysregulat ...[more]

PMID: 20435134

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Project description:The foodborne pathogen Listeria monocytogenes experiences osmotic stress in many habitats, including foods and the gastrointestinal tract of the host. While osmotic stress induced changes in expression have been investigated for specific genes, identifying and understanding genome-wide temporal changes in the transcriptome due to salt stress will provide insights into how this pathogen adapts to and survives this stress, leading to development of new intervention strategies. To determine the short-term and long-term responses to salt stress, we exposed exponential phase cells of L. monocytogenes H7858 to 6% NaCl in Brain Heart Infusion (BHI) broth at 7°C and 37°C and extracted RNA after 2.5%, 5%, 10%, and 20% of lag phase and during exponential growth in BHI + 6% NaCl, and evaluated temporal changes in transcript levels with microarrays. The temperature dependent short-term response to salt stress included a significant increase in transcript levels of the alternative sigma factor σB, with maximum expression at 2.5-5% of lag phase at 37°C, and at 20% of lag phase at 7°C. Transcript levels of genes known to be regulated by σB, including inlAB, opuCA, glpFK, and gadBC, were significantly upregulated at the same relative time points as σB As indicated by significantly elevated transcript levels during exponential growth in BHI + 6% NaCl, genes encoding proteins involved in purine and pyrimidine synthesis and amino acid biosynthesis are part of the long-term response to salt stress at 37°C. Transcript levels of virulence genes plcA, mpl, actA, and plcB were also significantly upregulated during exponential growth under salt stress at 37°C. Genes encoding proteins involved in protein degradation and stability and cell membrane modifications are part of the long-term response to salt stress at 7°C. Overall, an initial alteration in the transcriptome occurs, decreasing transcript levels of genes encoding proteins involved in energy conversion and metabolism, while increasing transcript levels of those involved in the stress response controlled by σB, followed by a long-term response, including increased expression of genes encoding compatible solute transporters and general stress proteins, facilitating growth under salt stress. A reference design was used to analyze gene expression differences. Exponential phase cultures at 37C and at 7C were used as a reference for salt stressed samples at each temperature. Salt stressed samples from the same relative time point were compared across temperatures. 4 biological replicates were tested for each comparison.

Dataset Information

Transcription profiling of brain from mice with multiple sclerosis, Alzheimers disease and permanent mid-cerebral artery occlusion from stroke to compare of gene expression changes characterizing these three different central nervous system pathologies

Publications

Comparative gene expression analysis in mouse models for multiple sclerosis, Alzheimer's disease and stroke for identifying commonly regulated and disease-specific gene changes.

Similar Datasets

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