E-MTAB-2397
Ontology highlight
ABSTRACT:
OTHER RELATED OMICS DATASETS IN: PRJEB8224
PROVIDER: E-MTAB-2397 | ExpressionAtlas | 2019-05-14
REPOSITORIES: ExpressionAtlas
Similar Datasets
Project description:Systems biology approaches reveal low-dose effects of nanoparticles
| PRJEB8224 | ENA
Project description:We report the gene expression profile in BV2 murine microglia cell line after treatment of silica coated magnetic nanoparticles with low dose (0.01 µg/µl) and high dose (0.1 µg/µl) for 12 h.
2021-08-18 | GSE154250 | GEO
Project description:Human bronchial lung cells (BEAS-2B) were treated for 6 weeks with low doses (1 µg/mL) of Ag nanoparticles (10 nm citrate-coated). At the end of the exposure control and treated samples were submitted for DNA methylation analysis (Illumina 450k). The overall goal of this experiment was to evaluate potential epigenetic changes associated with low-dose, long-term exposure to Ag nanoparticles.
2018-04-30 | E-MTAB-6331 | biostudies-arrayexpress
Project description:An estimated 1% or less of the nanoparticles (NPs) deposited in lungs translocate to systemic circulation and enter other organs; however this estimation may not be accurate considering the low sensitivity of the existing in vivo NP detection methods. Moreover, the biological outcomes of such low levels of translocation are not elucidated. The objectives of the present study were to employ a Nano-scale Hyperspectral Microscope to spatially observe and spectrally profile NPs in tissues, and characterize the effects of NPs in blood, liver and heart following pulmonary deposition and subsequent translocation from lungs. Adult female C57BL/6 mice were exposed via intratracheal instillation to 18 and 162 µg per mouse of industrially relevant non-doped titanium dioxide nanoparticles (nano-TiO2). Using the Nano-scale Hyperspectral Microscope translocation to heart and liver was confirmed at both doses and to blood at the highest dose at 24 hours post-exposure time-point. The analysis of biological effects using DNA microarrays, RT-qPCR and ELISA revealed activation of complement cascade and inflammatory process in heart and specific activation of complement factor 3 in blood, potentially suggestive of activation of early innate immune response essential for particle opsonisation and clearance. The liver showed subtle response with changes in the expression of few genes associated with acute phase genes. This study establishes a direct link between particle translocation and systemic effects. An estimated 1% or less of the nanoparticles (NPs) deposited in lungs translocate to systemic circulation and enter other organs; however this estimation may not be accurate considering the low sensitivity of the existing in vivo NP detection methods. Moreover, the biological outcomes of such low levels of translocation are not elucidated. The objectives of the present study were to employ a Nano-scale Hyperspectral Microscope to spatially observe and spectrally profile NPs in tissues, and characterize the effects of NPs in blood, liver and heart following pulmonary deposition and subsequent translocation from lungs. Adult female C57BL/6 mice were exposed via intratracheal instillation to 18 and 162 µg per mouse of industrially relevant non-doped titanium dioxide nanoparticles (nano-TiO2). Using the Nano-scale Hyperspectral Microscope translocation to heart and liver was confirmed at both doses and to blood at the highest dose at 24 hours post-exposure time-point. The analysis of biological effects using DNA microarrays, RT-qPCR and ELISA revealed activation of complement cascade and inflammatory process in heart and specific activation of complement factor 3 in blood, potentially suggestive of activation of early innate immune response essential for particle opsonisation and clearance. The liver showed subtle response with changes in the expression of few genes associated with acute phase genes. This study establishes a direct link between particle translocation and systemic effects. This experiment consists of one dose of nano-TiO2 (162 ug) and one control. There are 2 time points for each treatment and control group, e.g., day 1 and day 28. Each dose or time point has 5-6 biological replicates. There are total 22 samples (arrays)
2015-03-31 | E-GEOD-56325 | biostudies-arrayexpress
Project description:An estimated 1% or less of the nanoparticles (NPs) deposited in lungs translocate to systemic circulation and enter other organs; however this estimation may not be accurate considering the low sensitivity of the existing in vivo NP detection methods. Moreover, the biological outcomes of such low levels of translocation are not elucidated. The objectives of the present study were to employ a Nano-scale Hyperspectral Microscope to spatially observe and spectrally profile NPs in tissues, and characterize the effects of NPs in blood, liver and heart following pulmonary deposition and subsequent translocation from lungs. Adult female C57BL/6 mice were exposed via intratracheal instillation to 18 and 162 µg per mouse of industrially relevant non-doped titanium dioxide nanoparticles (nano-TiO2). Using the Nano-scale Hyperspectral Microscope translocation to heart and liver was confirmed at both doses and to blood at the highest dose at 24 hours post-exposure time-point. The analysis of biological effects using DNA microarrays, RT-qPCR and ELISA revealed activation of complement cascade and inflammatory process in heart and specific activation of complement factor 3 in blood, potentially suggestive of activation of early innate immune response essential for particle opsonisation and clearance. The liver showed subtle response with changes in the expression of few genes associated with acute phase genes. This study establishes a direct link between particle translocation and systemic effects. An estimated 1% or less of the nanoparticles (NPs) deposited in lungs translocate to systemic circulation and enter other organs; however this estimation may not be accurate considering the low sensitivity of the existing in vivo NP detection methods. Moreover, the biological outcomes of such low levels of translocation are not elucidated. The objectives of the present study were to employ a Nano-scale Hyperspectral Microscope to spatially observe and spectrally profile NPs in tissues, and characterize the effects of NPs in blood, liver and heart following pulmonary deposition and subsequent translocation from lungs. Adult female C57BL/6 mice were exposed via intratracheal instillation to 18 and 162 µg per mouse of industrially relevant non-doped titanium dioxide nanoparticles (nano-TiO2). Using the Nano-scale Hyperspectral Microscope translocation to heart and liver was confirmed at both doses and to blood at the highest dose at 24 hours post-exposure time-point. The analysis of biological effects using DNA microarrays, RT-qPCR and ELISA revealed activation of complement cascade and inflammatory process in heart and specific activation of complement factor 3 in blood, potentially suggestive of activation of early innate immune response essential for particle opsonisation and clearance. The liver showed subtle response with changes in the expression of few genes associated with acute phase genes. This study establishes a direct link between particle translocation and systemic effects. This experiment consists of one dose of nano-TiO2 (162 ug) and one control. There are 2 time points for each treatment and control group, e.g., day 1 and day 28. Each dose or time point has 5-6 biological replicates. There are total 22 samples (arrays)
2015-03-31 | E-GEOD-56324 | biostudies-arrayexpress
Project description:Low-dose addition of silver nanoparticles stresses marine plankton communities
| PRJEB24394 | ENA
Project description:Human bronchial lung cells (BEAS-2B) were treated for 6 weeks with low doses (1 µg/mL) of Ag nanoparticles (10 nm citrate coated). At the end of the exposure control and treated samples were submitted for RNA-Seq analysis (Hiseq2500). The overall goal of this experiment was to gain an in-depth understanding of the transcriptomic changes induced by low-dose, long-term exposure of human lung cells to Ag nanoparticles and to generate hypotheses related to their mechanisms of toxicity.
2018-04-30 | E-MTAB-6321 | biostudies-arrayexpress
Project description:Here, we show that systems biology approaches can uncover mechanisms underlying cellular responses to nanomaterials. Using RNA Seq, we found that cationic nanoparticles are capable of triggering down-regulation of cell cycle-related genes in primary human bronchial epithelial cells at doses that do not elicit acute cytotoxicity. Bioinformatics analyses implicated NF-kappaB as a putative transcriptional regulator and functional assays confirmed that cationic nanoparticles caused NF-kappaB-dependent cell cycle arrest. Our study demonstrates the feasibility of applying systems biology tools to assess cellular responses to nanomaterials, not least at low doses.
2015-01-17 | E-MTAB-2397 | biostudies-arrayexpress
Project description:Human bronchial lung cells (BEAS-2B) were treated for 6 weeks with low doses (0.5 µg/mL) of Ni and NiO nanoparticles and NiCl2. At the end of the exposure control and treated samples were submitted for RNA-Seq analysis (Hiseq2500). The overall goal of this experiment was to gain an in-depth understanding of the transcriptomic changes induced by low-dose, long-term exposure of human lung cells to Ni and NiO nanoparticles as well as to NiCl2 and to generate hypotheses related to their mechanisms of toxicity.
2020-04-19 | E-MTAB-8903 | biostudies-arrayexpress
Project description:Accumulating data suggest that the biological responses to high and low doses of radiation are qualitatively different, necessitating the direct study of low dose responses. Most such studies have utilized 2-dimensional culture systems, which may not fully represent responses in 3-dimensional tissues. To gain insight into low dose responses in tissue, we have profiled global gene expression in EPI-200, a 3-dimensional tissue model that imitates the structure and function of human epidermis, at 4, 16 and 24 hours after exposure to high (2.5 Gy) and low (0.1 Gy) doses of low LET protons. The most significant gene ontology groups among genes altered in expression were consistent with effects observed at the tissue level, where the low dose was associated with gradual recovery and tissue remodeling, while the high dose resulted in loss of structural integrity and terminal differentiation. Network analysis of the significantly responding genes suggested that TP53 dominated the response to 2.5 Gy, while HNF4A, a novel transcription factor not previously associated with radiation response, was most prominent in the low dose response. Thus, these studies address the molecular basis of response to low versus high dose low LET radiation exposure.
2010-06-01 | GSE20629 | GEO