Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Wound response in fs-THz-irradiated mouse skin

ABSTRACT: Terahertz (THz) technology has emerged for biomedical applications such as scanning, molecular spectroscopy, and medical imaging. However, the biological effect of THz radiation is not fully understood. Non-thermal effects of THz radiation were investigated by applying a femtosecond-terahertz (fs-THz) pulse to mouse skin. Analysis of the genome-wide expression profile in fs-THz-irradiated skin indicated that wound responses were predominantly through NF?B1- and Smad3/4-mediated transcriptional activation. Repeated fs-THz radiation delayed the closure of mouse skin punch wounds due to up-regulation of transforming growth factor-beta (TGF-?). These findings suggest that fs-THz radiation provokes a wound-like signal in skin with increased expression of TGF-? and activation of its downstream target genes, which perturbs the wound healing process in vivo. To identify non-thermally induced in vivo mode action of THz radiation, gene expression profile of fs-THz-irradiated skin (at post 24-hours after 1 hour exposure) was explored. Purified total RNAs from independent 3 mice of each sham and THz group were labeled and hybridized on the Mouse Gene 1.0 ST Array (Affymetrix, Santa Clara, CA), according to manufacturer's standard protocol. Statistically filtered THz-responsive genes were examined for possible interactions with other molecules, canonical signaling pathways, and bio-functions.

ORGANISM(S): Mus musculus

SUBMITTER: Kyu-Tae Kim

PROVIDER: E-GEOD-44671 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Similar Datasets

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.

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.

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.

Dataset Information

Wound response in fs-THz-irradiated mouse skin

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure