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The short time-series transcriptome profiles of a human adipose mesenchymal stem cell by electrical stimulation of enzymatic biofuel cell

ABSTRACT: We investigate the mRNA expression properties of hAD-MSCs by electrical stimulation using EBFC as an electrical regulator. We set up three different electrical currents, at 120±10.2, 250±11.5, and 500±16.2 nA/cm2 in hAD-MSCs. We performed transcriptome profiling to analyze the impact of EBFC-derived electrical current on gene expression using next-generation sequencing (NGS). Among the 166 up-regulated genes, 98 genes were significantly enriched into the UniProtKB functional categories such as ribosomal protein, alternative splicing, ribonucleoprotein, and amino-acid biosynthesis. This indicate that the genes highly associated with metabolic regulation of cell growth and proliferation have been changed by electrical stimulation in the EBFCs.

ORGANISM(S): Homo sapiens

PROVIDER: GSE140781 | GEO | 2019/11/22

REPOSITORIES: GEO

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Project description:Current standards for safe delivery of electrical stimulation to the central nervous system are based on foundational studies which examined post-mortem tissue for histological signs of damage. This set of observations and the subsequently proposed limits to safe stimulation, termed the “Shannon limits,” allow for a simple calculation (using charge per phase and charge density) to determine the intensity of electrical stimulation that can be delivered safely to brain tissue. In the three decades since the Shannon limits were reported, advances in molecular biology have allowed for more nuanced and detailed approaches to be used to expand current understanding of the physiological effects of stimulation. Here, we investigated spatial transcriptomics as a new approach to assess the safety and efficacy of electrical stimulation in the brain. Electrical stimulation was delivered to the rat visual cortex with either acute or chronic electrode implantation procedures (acute: tissue collection 3 hours post-stimulation on the day of surgery; chronic: stimulation delivered 1-month post-implantation, and tissue collection 24 hours later). To explore the influence of device type and stimulation parameters, we used carbon fiber ultramicroelectrode arrays (7 µm diameter) and microwire electrode arrays (50 µm diameter) delivering charge and charge density levels selected above and below reported tissue damage thresholds (range: 2-20 nC, 0.1-1 mC/cm2). Spatial transcriptomics was performed using Visium Spatial Gene Expression Slides (10x Genomics), which enabled simultaneous immunohistochemistry and spatial transcriptomics to directly compare traditional histological metrics to transcriptional profiles within each tissue sample. Our data revealed unique spatial patterns of differentially expressed genes that are related to cellular processes including inflammation, cell cycle progression, and plasticity. Effects were dependent on stimulation parameters and were localized to both traditional and ultra-small device locations. The abundance of data gathered using this approach allows for sophisticated analysis that can be used to generate new hypotheses while also revealing novel potential biomarkers of neurostimulation.

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The short time-series transcriptome profiles of a human adipose mesenchymal stem cell by electrical stimulation of enzymatic biofuel cell

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