Mammalian stem cells respond to terahertz radiation with changes in gene expression
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE23888 | GEO | 2010/12/28
SECONDARY ACCESSION(S): PRJNA130455
REPOSITORIES: GEO
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Project description:The biological impacts of terahertz (THz) waves as well as their biosafety have emerged as a new area of concern with the gradual application of terahertz radiation. In recent years, many studies have been conducted to investigate the influence of terahertz on living organisms, such as animals or cell cultures; however, the biological effects of terahertz waves have not yet been fully revealed. In this study, Caenorhabditis elegans (C. elegans), one of the most acceptable model organisms for studying various forms of ionizing and non-ionizing radiation exposure was used to evaluate the effects of terahertz waves on the entire organism. In this study, the integration of transcriptome sequencing and behavioral tests of C. elegans revealed that high-power THz irradiation damaged the epidermal ultrastructures, inhibited the expression of cuticle collagen gene to impair the movement of C. elegans. Our findings offer fresh perspectives on the biological impacts of high-power THz radiation that could cause epidermal damage and provoke a systemic response.
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Project description:Terahertz (THz) frequency occupies a large portion of the electromagnetic spectrum that is between the infrared and microwave region. Recent advances in THz application have stimulated interests regarding the biological effects associated with this frequency range. In current study, we report that irradiation with a single-frequency THz laser on primary mice cortical neuron cultures and oligodendrocyte cultures results in dose dependent irradiation specific changes in cellular function and gene expression. In neuron cultures, THz irradiation increases excitatory synaptic transmission and neuronal firing activities. Microarray assay reveals neuronal gene expression dynamics after THz exposure, which are highly consistent with morphology and electrophysiology results. Besides, certain schedule of THz irradiation inhibits the proliferation of oligodendrocyte precursor cells (OPCs) and promotes OPC differentiation. Notably, the myelination process in neuron-oligodendrocyte cocultures is enhanced after THz exposure. In summary, our observations suggest that THz irradiation in certain frequency can modulate the functions of neuron and oligodendrocyte, with different sensitivity to THz between neuronal cell types. These results may provide important understanding of the mechanisms that govern THz interactions with nervous systems and suggest THz wave as a new strategy for neuromodulation.
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Project description:We report that terahertz (THz) irradiation of mouse mesenchymal stem cells with a pulsed broadband (centered at 10 THz) source, or a single-frequency, 2.52 THz, (SF) laser source, both with weak average power (<1mW/cm2), results in specific heterogenic changes in gene expression. The insignificant differential expression of heat shock and stress related genes as well as our temperature measurements imply a non-thermal response. The microarray survey and RT-PCR experiments demonstrate that at different irradiation conditions distinct groups of genes are activated. Stem cells irradiated for 12 hours with the broadband THz source exhibit an accelerated differentiation toward adipose phenotype, while the 2-hour (broadband or SF) irradiation affects genes transcriptionally active in pluripotent stem cells. Phenotypic and gene expression differences suggest that the THz effect depends on irradiation parameters such as duration and type of THz source, and on the level of stem cell differentiation. Computer simulations of the core promoters of two pluripotency markers reveal association between gene upregulation and propensity for DNA breathing. We propose that THz radiation has potential for non-contact control of cellular gene expression.
2013-07-01 | GSE41084 | GEO
Project description:We report that terahertz (THz) irradiation of mouse mesenchymal stem cells with a pulsed broadband (centered at 10 THz) source, or a single-frequency, 2.52 THz, (SF) laser source, both with weak average power (<1mW/cm2), results in specific heterogenic changes in gene expression. The insignificant differential expression of heat shock and stress related genes as well as our temperature measurements imply a non-thermal response. The microarray survey and RT-PCR experiments demonstrate that at different irradiation conditions distinct groups of genes are activated. Stem cells irradiated for 12 hours with the broadband THz source exhibit an accelerated differentiation toward adipose phenotype, while the 2-hour (broadband or SF) irradiation affects genes transcriptionally active in pluripotent stem cells. Phenotypic and gene expression differences suggest that the THz effect depends on irradiation parameters such as duration and type of THz source, and on the level of stem cell differentiation. Computer simulations of the core promoters of two pluripotency markers reveal association between gene upregulation and propensity for DNA breathing. We propose that THz radiation has potential for non-contact control of cellular gene expression.
2013-07-01 | GSE41083 | GEO
Project description:We report that terahertz (THz) irradiation of mouse mesenchymal stem cells with a pulsed broadband (centered at 10 THz) source, or a single-frequency, 2.52 THz, (SF) laser source, both with weak average power (<1mW/cm2), results in specific heterogenic changes in gene expression. The insignificant differential expression of heat shock and stress related genes as well as our temperature measurements imply a non-thermal response. The microarray survey and RT-PCR experiments demonstrate that at different irradiation conditions distinct groups of genes are activated. Stem cells irradiated for 12 hours with the broadband THz source exhibit an accelerated differentiation toward adipose phenotype, while the 2-hour (broadband or SF) irradiation affects genes transcriptionally active in pluripotent stem cells. Phenotypic and gene expression differences suggest that the THz effect depends on irradiation parameters such as duration and type of THz source, and on the level of stem cell differentiation. Computer simulations of the core promoters of two pluripotency markers reveal association between gene upregulation and propensity for DNA breathing. We propose that THz radiation has potential for non-contact control of cellular gene expression.
2013-07-01 | GSE41085 | GEO
Project description:We report that terahertz (THz) irradiation of mouse mesenchymal stem cells with a pulsed broadband (centered at 10 THz) source, or a single-frequency, 2.52 THz, (SF) laser source, both with weak average power (<1mW/cm2), results in specific heterogenic changes in gene expression. The insignificant differential expression of heat shock and stress related genes as well as our temperature measurements imply a non-thermal response. The microarray survey and RT-PCR experiments demonstrate that at different irradiation conditions distinct groups of genes are activated. Stem cells irradiated for 12 hours with the broadband THz source exhibit an accelerated differentiation toward adipose phenotype, while the 2-hour (broadband or SF) irradiation affects genes transcriptionally active in pluripotent stem cells. Phenotypic and gene expression differences suggest that the THz effect depends on irradiation parameters such as duration and type of THz source, and on the level of stem cell differentiation. Computer simulations of the core promoters of two pluripotency markers reveal association between gene upregulation and propensity for DNA breathing. We propose that THz radiation has potential for non-contact control of cellular gene expression. Growing in petri dish mouse mesenchymal stem cell cultures are irradiated for 12 hours with pulsed ultrafast (35 fs) broadband (centered at ~10 THz) source. Three independent biological experiments were conducted. In each experiment, a control mMSC culture was placed adjacent to the irradiated sample, and the temperature was kept at 26-27M-BM-:C for both the control and the irradiated sample. Immediately after completing the irradiation, total RNA was extracted from the irradiated sample and the control, and microarrays were used to identify differential changes in gene expression between the irradiated sample and its respective control. In each experiment, the mMSC cultures were synchronized to be at the same differentiation time point immediately before the irradiation.
2013-07-01 | E-GEOD-41084 | biostudies-arrayexpress
Project description:We report that terahertz (THz) irradiation of mouse mesenchymal stem cells with a pulsed broadband (centered at 10 THz) source, or a single-frequency, 2.52 THz, (SF) laser source, both with weak average power (<1mW/cm2), results in specific heterogenic changes in gene expression. The insignificant differential expression of heat shock and stress related genes as well as our temperature measurements imply a non-thermal response. The microarray survey and RT-PCR experiments demonstrate that at different irradiation conditions distinct groups of genes are activated. Stem cells irradiated for 12 hours with the broadband THz source exhibit an accelerated differentiation toward adipose phenotype, while the 2-hour (broadband or SF) irradiation affects genes transcriptionally active in pluripotent stem cells. Phenotypic and gene expression differences suggest that the THz effect depends on irradiation parameters such as duration and type of THz source, and on the level of stem cell differentiation. Computer simulations of the core promoters of two pluripotency markers reveal association between gene upregulation and propensity for DNA breathing. We propose that THz radiation has potential for non-contact control of cellular gene expression. Growing in petri dish mouse mesenchymal stem cell cultures are irradiated for 2 hours with pulsed ultrafast (35 fs) broadband (centered at ~10 THz) source. Three independent biological experiments were conducted. In each experiment, a control mMSC culture was placed adjacent to the irradiated sample, and the temperature was kept at 26-27M-BM-:C for both the control and the irradiated sample. Immediately after completing the irradiation, total RNA was extracted from the irradiated sample and the control, and microarrays were used to identify differential changes in gene expression between the irradiated sample and its respective control. In each experiment, the mMSC cultures were synchronized to be at the same differentiation time point immediately before the irradiation.
2013-07-01 | E-GEOD-41083 | biostudies-arrayexpress
Project description:We report that terahertz (THz) irradiation of mouse mesenchymal stem cells with a pulsed broadband (centered at 10 THz) source, or a single-frequency, 2.52 THz, (SF) laser source, both with weak average power (<1mW/cm2), results in specific heterogenic changes in gene expression. The insignificant differential expression of heat shock and stress related genes as well as our temperature measurements imply a non-thermal response. The microarray survey and RT-PCR experiments demonstrate that at different irradiation conditions distinct groups of genes are activated. Stem cells irradiated for 12 hours with the broadband THz source exhibit an accelerated differentiation toward adipose phenotype, while the 2-hour (broadband or SF) irradiation affects genes transcriptionally active in pluripotent stem cells. Phenotypic and gene expression differences suggest that the THz effect depends on irradiation parameters such as duration and type of THz source, and on the level of stem cell differentiation. Computer simulations of the core promoters of two pluripotency markers reveal association between gene upregulation and propensity for DNA breathing. We propose that THz radiation has potential for non-contact control of cellular gene expression. Growing in petri dish mouse mesenchymal stem cell cultures are irradiated for 2 hours with a single-frequency (2.52 THz) CW laser source. Three independent biological experiments were conducted. In each experiment, a control mMSC culture was placed adjacent to the irradiated sample, and the temperature was kept at 26-27M-BM-:C for both the control and the irradiated sample. Immediately after completing the irradiation, total RNA was extracted from the irradiated sample and the control, and microarrays were used to identify differential changes in gene expression between the irradiated sample and its respective control. In each experiment, the mMSC cultures were synchronized to be at the same differentiation time point immediately before the irradiation.
2013-07-01 | E-GEOD-41085 | biostudies-arrayexpress
Project description:Terahertz (THz) is an electromagnetic wave with a spectrum between microwave and infrared. Due to its unique characteristics, THZ has great application prospects in both medical imaging and biomedicine. However, its effects on the angiogenesis capacity of human umbilical vein endothelial cells (HUVECs) are still unclear. RNA sequencing indicated that the expression of genes related to cytoskeleton increased significantly after THz irradiation.
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Project description:Terahertz (THz) is an electromagnetic wave with a spectrum between microwave and infrared. Due to its unique characteristics, THZ has great application prospects in both medical imaging and biomedicine. however, its effects on the angiogenesis capacity of human umbilical vein endothelial cells (HUVECs) are still unclear. The assay for transposase-accessible chromatin (ATAC) sequencing indicated that the expression of genes related to cytoskeletal increased significantly after THz irradiation.
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