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Dataset on transcriptome signature of skeletal muscle of young, adult and aged mice

ABSTRACT: Dataset on transcriptome signature of skeletal muscle of young, adult and aged mice

PROVIDER: PRJNA561783 | ENA |

REPOSITORIES: ENA

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Dataset on transcriptome signature of skeletal muscle of young, adult and aged mice

Project description:Skeletal muscle aging is characterized by a progressive decline in muscle mass and function, which is referred to as sarcopenia. However, the molecular mechanisms implicated in sarcopenia remain unclear. In this dataset, we include the expression data obtained from gastrocnemius muscle of young, mature adult and old C57BL6 male mice.

2021-08-18 | GSE136266 | GEO

Circadian mRNA expression in skeletal muscle of young and aged mice

Project description:Aging animals undergo a variety of changes in molecular processes. Among these, the cellular circadian clock has been shown to change as animals age. Moreover, there is evidence that also core circadian clock proteins could influence the ageing behavior of vertebrates. To investigate the interplay between aging and the circadian clock, we studied circadian mRNA expression in skeletal muscles from young (8 weeks) and aged (80 weeks) mice. In order to detect differences in circadian patterns, we used microarray-based transcriptome-wide time series of mRNA expression, containing 16 independent measurements for both young and aged animals. Each individual time point consists of total RNA from hind limb skeletal muscles from 3 different animals. Young and aged mice where entrained to 12 hr/12 hr light-dark conditions. From these mice, hind limb skeletal muscles were extracted at different times of day, in order to measure circadian mRNA expression patterns.

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Expression Profile of Skeletal Muscle from Young and Aged C57B1/6 Mice

Project description:Our laboratory wanted to define the transcription profile of aged skeletal muscle. For this reason, we performed a triplicate microarray study on young (3 weeks) and aged (24 months) gatrocnemius muscle from wild-type C57B16 Mice Keywords: other this experiment include 2 samples and 6 replicates

2009-02-26 | E-GEOD-14678 | biostudies-arrayexpress

Expression Profile of Skeletal Muscle from Young and Aged C57B1/6 Mice

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Skeletal muscle stem cell changes between young and aged

Project description:Skeletal muscle stem cell changes between young and aged

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Circadian mRNA expression in skeletal muscle of young and aged mice

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Proteomic dataset of ZP proteins from young- and middle-aged mice

Project description:This dataset includes a proteomic analysis of the ZP protein isolated from MII oocytes in young- and middle-aged mice.

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Metabolomic analysis of skeletal muscle in young and aged mice

Project description:Sarcopenia is the age-induced, progressive loss of skeletal muscle mass and function, which results in poor muscle performance. To better understand changes in skeletal muscles during sarcopenia, we performed a metabolomic analysis of skeletal muscle in young (8-week-old) and aged (28-month-old) mice using CE-TOFMS. Our data shows that the metabolites including glucose and polyamine metabolism were decreased in aged mice compared with young mice. In addition, neurotransmitter levels were higher in aged mice.

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Mechanical regulation of the glucocorticoid-sensitive transcriptome in young and aged skeletal muscle

Project description:Elevated glucocorticoids alter the skeletal muscle transcriptome to induce a myopathy characterized by muscle atrophy, muscle weakness, and decreased metabolic function. These effects are more likely to occur and be more severe in aged muscle. Resistance exercise can blunt development of glucocorticoid myopathy in young muscle, but the potential to blunt the signals initiating myopathy in aged muscle is unknown. To answer this, young (4-month-old) and aged (24-25-month-old) male C57BL/6 mice were randomized to receive either an intraperitoneal (IP) injection of dexamethasone (DEX; 2 mg/kg) or saline as a control. Two hours post-injections, tibialis anterior (TA) muscles of mice were subjected to unilateral high force contractions. Muscles were harvested four hours later. The glucocorticoid- and contraction-sensitive genes were determined by RNA sequencing. The number of glucocorticoid sensitive genes was similar between young and aged muscle. Contractions altered more glucocorticoid-sensitive genes in aged muscle, with this outcome primarily occurring when hormone levels were elevated. Glucocorticoid-sensitive gene programs altered by contractions were primarily related to metabolism in young mice and muscle size regulation and inflammation in aged mice. In silico analysis implied Peroxisome proliferator-activated receptor gamma-1 (PPARG) contributed to the contraction-induced changes in glucocorticoid-sensitive genes in aged muscle. Increasing PPARG expression in the TA of aged mice using Adeno-associated virus serotype 9 partially counteracted the glucocorticoid-induced reduction in Runt-related transcription factor 1 (Runx1) mRNA content, recapitulating the effects observed by contractions. Overall, these data contribute to our understanding of the mechanical regulation of the glucocorticoid transcriptome in aged skeletal muscle.

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Gene expression analysis of cell populations derived from skeletal muscle of young and aged mice

Project description:Comprehensive analyses of mRNA expression were performed using three different cell populations isolated from skeletal muscle of young and aged mice to investigate age-related changes of each cell population.

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