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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Age-mediated transcriptomic changes in adult mouse substantia nigra

ABSTRACT: Substantia nigra pars compacta (SNpc) is highly sensitive to normal aging and selectively degenerates in Parkinson's disease. Until now, molecular mechanisms behind SNpc aging have not been fully investigated using high throughput techniques. Here, aging-associated early changes in transcriptome of SNpc were investigated comparing late middle-aged (18 months old) to young (2 months old) mice. Three age groups of C57 wild type mice were used in microarray analysis: young (2 months old), middle aged (10 months old), and late-middle aged (18 months old) mice. Four replicates were included in each age group and each replicate was pooled from 4 mice (4 mice/replicate x 4 replicates x 3 age groups). Total RNA was isolated from SNpc for hybridization on Affymetrix microarrays.

ORGANISM(S): Mus musculus

SUBMITTER: Lin Gao

PROVIDER: E-GEOD-45043 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Age-mediated transcriptomic changes in adult mouse substantia nigra.

Gao Lin L Hidalgo-Figueroa María M Escudero Luis M LM Díaz-Martín Juan J López-Barneo José J Pascual Alberto A

PloS one 20130430 4

Substantia nigra pars compacta (SNpc) is highly sensitive to normal aging and selectively degenerates in Parkinson's disease (PD). Until now, molecular mechanisms behind SNpc aging have not been fully investigated using high throughput techniques. Here, we show early signs of aging in SNpc, which are more evident than in ventral tegmental area (VTA), a region adjacent to SNpc but less affected in PD. Aging-associated early changes in transcriptome were investigated comparing late middle-aged (18 ...[more]

PMID: 23638090

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Age-mediated transcriptomic changes in adult mouse brain ventral tegmental area

Project description:Substantia nigra pars compacta (SNpc) is highly sensitive to normal aging and selectively degenerates in Parkinson's disease. However, ventral tegmental area (VTA), a region adjacent to SNpc, is less affected in PD. Until now, molecular mechanisms behind VTA aging have not been fully investigated using high throughput techniques. Here, aging-associated early changes in transcriptome of VTA were investigated comparing late middle-aged (18 months old) to young (2 months old) mice. Three age groups of C57 wild type mice were used in microarray analysis: young (2 months old), middle aged (10 months old), and late-middle aged (18 months old) mice. Four replicates were included in each age group and each replicate was pooled from 5 mice (5 mice/replicate x 4 replicates x 3 age groups). Total RNA was isolated from VTA for hybridization on Affymetrix microarrays.

2013-05-29 | E-GEOD-45044 | biostudies-arrayexpress

Age-mediated transcriptomic changes in adult mouse substantia nigra

Project description:Substantia nigra pars compacta (SNpc) is highly sensitive to normal aging and selectively degenerates in Parkinson's disease. Until now, molecular mechanisms behind SNpc aging have not been fully investigated using high throughput techniques. Here, aging-associated early changes in transcriptome of SNpc were investigated comparing late middle-aged (18 months old) to young (2 months old) mice.

2013-05-29 | GSE45043 | GEO

Age-mediated transcriptomic changes in adult mouse brain ventral tegmental area

2013-05-29 | GSE45044 | GEO

Proteome profiles of skeletal muscle connective tissue: Influence of aging and physical training

Project description:Both aging and physical activity can influence the amount of connective tissue in skeletal muscle, but the impact of these upon specific extracellular matrix (ECM) proteins in skeletal muscle is unknown. We investigated the proteome profile of connective tissue in skeletal muscle by label-free proteomic analysis of on cellular protein-depleted extracts from lateral gastrocnemius muscle of old (22-23 months old) and middle-aged mice (11 months old) subjected to three different levels of regular physical activity for 10 weeks (high resistance wheel running, low resistance wheel running or sedentary controls). We hypothesized that aging is correlated with increased amount of connective tissue proteins in skeletal muscle, and that regular physical activity can counteract these age-related changes. We found that dominating cellular proteins were diminished in the urea/thiourea extract, which was therefore used for proteomics. Proteomic analysis identified 482 proteins and showed enrichment for ECM proteins. Statistical analysis revealed that the abundances of 86 proteins were changed with age. Twenty-three of these differentially abundant proteins were identified as structural ECM proteins (e.g., collagens and laminins) and all of these were significantly more abundant with aging. No significant effect of training or interaction between training and advance in age was found for any proteins. Finally, we found a lower protein concentration in the urea/thiourea extracts from the old compared to middle-aged mice. These findings indicate that intramuscular connective tissue alters its protein content with age but is unaffected by training.

2023-04-27 | PXD036532 | Pride

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2014-05-08 | E-GEOD-50821 | biostudies-arrayexpress

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2022-10-01 | GSE185086 | GEO

single cell RNA sequencing of hematopoietic stem cells aged in old and young niches

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