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Effect of 6-day disuse on transcriptome in human soleus and vastus lateralis muscles

ABSTRACT: This study assessed the effects of weekly disuse (dry immersion; 10 males) on the strength and aerobic performance of the ankle plantar flexors and knee extensors, mitochondrial function in permeabilized muscle fibers, and the proteomic (quantitative mass spectrometry-based analysis) and transcriptomic (RNA-sequencing) profiles of the soleus muscle and vastus lateralis muscle. Dry immersion-induced decreases in maximal voluntary contraction in both muscles were comparable and occurred without a decrease in the relative content of contractile proteins, which appears to be due to disruption of neuromuscular mechanisms rather than a decrease in muscle mass. The decrease in maximum ADP-stimulated mitochondrial respiration was also comparable in both muscles and occurred without a decrease in the relative content of mitochondrial proteins/respiratory enzymes, which appears to be associated with dysregulation of respiration. Meanwhile changes in the transcriptome were significantly more pronounced (2.5–4 times, in terms of number of differentially expressed genes) in the “slow” soleus muscle than in the vastus lateralis muscle. This suggests that longer-term disuse will lead to a change (primarily a decrease) in the relative content of a number of highly abundant proteins in Sol and an accelerated decline in the functional capacity of the ankle plantar flexors.

ORGANISM(S): Homo sapiens

PROVIDER: GSE271607 | GEO | 2024/09/08

REPOSITORIES: GEO

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Multidirectional effect of low-intensity electrical myostimulation on gene expression and phenotype in thigh and calf muscles after one week of disuse

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The Effects of Regular Post-Exercise Cold Water Immersion on DNA methylation in Muscle Following 10-weeks of Strength Training

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The Effects of Regular Post-Exercise Cold Water Immersion on Gene Expression in Muscle Following 10-weeks of Strength Training

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Molecular Signatures of Muscle Rehabilitation After Limb Disuse

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