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Low-intensity exercise training improves systolic function of heart during metastatic melanoma-induced cachexia in mice

ABSTRACT: Low-intensity exercise training improves systolic function of heart during metastatic melanoma-induced cachexia in mice

PROVIDER: PRJNA1002339 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25536906_1.fastq.gz	Fastqsanger.gz
	SRR25536906_2.fastq.gz	Fastqsanger.gz
	SRR25536907_1.fastq.gz	Fastqsanger.gz
	SRR25536907_2.fastq.gz	Fastqsanger.gz
	SRR25536908_1.fastq.gz	Fastqsanger.gz

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Low-intensity exercise training improves systolic function of heart during metastatic melanoma-induced cachexia in mice

Project description:Cardiac dysfunction often arises during the early stages of cancer cachexia, posing a significant complication of the disease. Physical fitness is commonly recommended in these early stages of cancer cachexia due to its beneficial impacts on various aspects of the condition, including cardiac dysfunction. However, the direct functional impacts of exercise on the heart during cancer cachexia largely remain unexplored. In this study, we induced cancer cachexia in mice using a metastatic B16F10 melanoma model. Concurrently, these mice underwent a physical exercise regimen to investigate its potential role in cardiac function during cachexia. Our findings indicate that exercise training can help prevent metastatic melanoma-induced muscle loss without significant alterations to body and fat weight. Moreover, exercise improved the melanoma-induced decline in ejection fraction and fractional shortening, while also mitigating the increase in high-sensitive cardiac troponin T levels caused by metastatic melanoma in mice. Transcriptome analysis revealed that exercise significantly reversed the transcriptional alterations in the heart induced by melanoma, which were primarily enriched in pathways related to heart contraction. These results suggest that exercise can improve systolic heart function and directly influence the transcriptome of the heart during metastatic melanoma-induced cachexia.

2024-02-03 | GSE240131 | GEO

Exercise training reverses cancer cachexia-induced decrease in muscle COPS2/TRIP15/ALIEN

Project description:The mechanisms underlying exercise-induced effects in the skeletal muscle during cancer cachexia progression have not been fully described. Here, we tested the hypothesis that different exercise training protocols could attenuate metabolic impairment in a severe model of cancer cachexia. Moderate-intensity training (MIT) and high-intensity interval training (HIIT) improved running capacity and prolonged lifespan in tumor-bearing rats. HIIT also reduced oxidative stress and reestablished muscle contractile function. An unbiased proteomics screening revealed that COP9 signalosome complex subunit 2 (COPS2), also known as thyroid receptor interacting protein 15 (TRIP15) or ALIEN, is one of the most downregulated proteins at the early stage of cancer cachexia progression. HIIT restored COPS2/TRIP15/ALIEN protein expression to the control levels. Moreover, lung cancer patients with low endurance capacity had lower muscle COPS2/TRIP15/ALIEN protein content compared to age- and sex-matched control subjects. We further established an in vitro model of cancer-induced muscle wasting using tumor cells-conditioned media to explore the potential protective role of COPS2/TRIP15/ALIEN for myotubes homeostasis. This in vitro model indicate that tumor cells produce factors that directly affect myotube metabolism, but COPS2/TRIP15/ALIEN overexpression is not able to fully reestablish metabolic homeostasis and protein content in myotubes incubated with tumor cells-conditioned media. The current study provides new insight into the role of exercise training as a co-therapy for cancer cachexia and uncovers COPS2/TRIP15/ALIEN as a novel potential target for cancer cachexia.

2021-09-08 | PXD013226 | Pride

Low-intensity exercise training improves systolic function of heart during metastatic melanoma-induced cachexia in mice.

Project description:Cardiac dysfunction frequently emerges in the initial stages of cancer cachexia, posing a significant complication of the disease. Physical fitness is commonly recommended in these early stages of cancer cachexia due to its beneficial impacts on various aspects of the condition, including cardiac dysfunction. However, the direct functional impacts of exercise on the heart during cancer cachexia largely remain unexplored. In this study, we induced cancer cachexia in mice using a metastatic B16F10 melanoma model. Concurrently, these mice underwent a low-intensity exercise regimen to investigate its potential role in cardiac function during cachexia. Our findings indicate that exercise training can help prevent metastatic melanoma-induced muscle loss without significant alterations to body and fat weight. Moreover, exercise improved the melanoma-induced decline in left ventricular ejection fraction and fractional shortening, while also mitigating the increase in high-sensitive cardiac troponin T levels caused by metastatic melanoma in mice. Transcriptome analysis revealed that exercise significantly reversed the transcriptional alterations in the heart induced by melanoma, which were primarily enriched in pathways related to heart contraction. These results suggest that exercise can improve systolic heart function and directly influence the transcriptome of the heart during metastatic melanoma-induced cachexia.

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Skeletal muscle response to high-intensity intermittent exercise training in young men

Project description:High-intensity intermittent exercise training (HIIT) has been proposed as an effective approach for improving both anaerobic and aerobic capacities. However, the molecular response of muscles to HIIT remains unknown. We used microarray to examine the effects of HIIT on global gene expression in human skeletal muscle.

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Precision High Intensity Training through Epigenetics (PHITE)

Project description:Precision High Intensity Training through Epigenetics (PHITE)

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Precision High Intensity Training through Epigenetics (PHITE)

Project description:Precision High Intensity Training through Epigenetics (PHITE)

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Human skeletal muscle possesses an epigenetic memory of high intensity interval training

Project description:Twenty healthy subjects (25±5yrs) completed two high-intensity interval training interventions (training and retraining) lasting 8 weeks separated by 12 weeks of detraining. Measurements at baseline and after training, detraining and retraining included maximal oxygen consumption (V̇O2max), along with vastus lateralis biopsy for genome wide DNA methylation using Illumina Epic arrays in 5 of the participants for all conditions (baseline, training, detraining and retraining).

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Human skeletal muscle transcriptome in response to high-intensity interval training

Project description:Skeletal muscle tissue is a highly adaptable tissue, responding to the specific demands it is subjected to. High-intensity interval training (HIIT) has been shown to generate similar, or even greater, molecular changes in skeletal muscle as that of constant load longer-lasting endurance-type training at moderate intensities. Despite shorter exposure times, the higher intensity provided by HIIT training leads to greater metabolic perturbations and thereby larger improvements in mitochondrial content and maximal oxygen uptake. During a period of regular exercise training, the performance improvements follow a non-linear pattern with a relatively faster pace initially and a gradual ‘plateauing-off’ after weeks and months. It is believed that this ‘plateau effect’ is due to a blunting of the molecular responses to acute exercise with exercise training. In the present study we utilised an explorative global transcriptomic approach to investigate the phenomenon of transcriptional-level blunting of the acute exercise response in human skeletal muscle over the course of a three-week HIIT intervention. We hypothesize that the blunting of transcription at this time-point is specific to certain pathways, including metabolic regulation and that these genes have communal transcriptional regulation.

2021-09-01 | GSE163356 | GEO

Exercise training reverses cancer-induced oxidative stress and decrease in muscle COPS2/TRIP15/ALIEN

Project description:We tested the hypothesis that exercise training would attenuate metabolic impairment in a model of severe cancer cachexia and we explored the mechanisms underlying these effects.

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