Three human cell types respond to multi-walled carbon nanotubes and titanium dioxide nanobelts with cell-specific transcriptomic and proteomic expression [THP-1 cells]
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ABSTRACT: To identify key biological pathways that define toxicity or biocompatibility after nanoparticle exposure, three human cell types were exposed in vitro to two high aspect ratio nanoparticles for 1 hr or 24 hr and collected for global transcriptomics. Transcriptional responses were measured by global microarray analysis of cells in culture. Groups (N=3 biological replicates) of THP-1 cells exposed to 0, 10 or 100 ug/ml MWCNT or TiO2-NB nanoparticles for 1 or 24 hr.
Project description:To identify key biological pathways that define toxicity or biocompatibility after nanoparticle exposure, three human cell types were exposed in vitro to two high aspect ratio nanoparticles for 1 hr or 24 hr and collected for global transcriptomics. Transcriptional responses were measured by global microarray analysis of cells in culture. Groups (N=3 biological replicates) of SAE cells exposed to 0, 10 or 100 ug/ml MWCNT or TiO2-NB nanoparticles for 1 or 24 hr.
Project description:To identify key biological pathways that define toxicity or biocompatibility after nanoparticle exposure, three human cell types were exposed in vitro to two high aspect ratio nanoparticles for 1 hr or 24 hr and collected for global transcriptomics. Transcriptional responses were measured by global microarray analysis of cells in culture. Groups (N=3 biological replicates) of Caco-2/HT29-MTX cells exposed to 0, 10 or 100 ug/ml MWCNT or TiO2-NB nanoparticles for 1 or 24 hr.
Project description:To identify key biological pathways that define toxicity or biocompatibility after nanoparticle exposure, three human cell types were exposed in vitro to two high aspect ratio nanoparticles for 1 hr or 24 hr and collected for global transcriptomics. Transcriptional responses were measured by global microarray analysis of cells in culture.
Project description:To identify key biological pathways that define toxicity or biocompatibility after nanoparticle exposure, three human cell types were exposed in vitro to two high aspect ratio nanoparticles for 1 hr or 24 hr and collected for global transcriptomics. Transcriptional responses were measured by global microarray analysis of cells in culture.
Project description:To identify key biological pathways that define toxicity or biocompatibility after nanoparticle exposure, three human cell types were exposed in vitro to two high aspect ratio nanoparticles for 1 hr or 24 hr and collected for global transcriptomics. Transcriptional responses were measured by global microarray analysis of cells in culture.
Project description:To investigate how the phenotype of macrophages that have engulfed engineered nanoparticles (ENPs) differs from normal macrophages, we conducted Affymetrix microarray studies to identify the gene regulatory pathways affected by the ENPs. To mimic potential occupational exposure scenarios, the experimental design involved pretreatment of mouse primary bone marrow macrophages with the ENPs (25 mg/ml) for 24 hr, followed by removal of residual ENPs and challenging the macrophages with the TLR4 ligand and surrogate bacterial stimulus, lipopolysachharide (LPS) for 4 hr. The 4 hr challenge time was chosen based on preliminary studies which showed many of the proinflammatory gene expression responses peak between 2-6 hr after LPS treatment. Transcriptional responses were measured by global microarray analysis of mouse primary bone marrow macrophage cells. Groups (N=3 replicates) of primary mouse bone marrow macrophages were pretreated with selected engineered nanoparticless (33 nm iron oxide(SPIO) or 50 nm amorphous silica) at concentrations of 25 mg/ml for 24 hours. After removing the nanoparticles, macrophages were challenged with fresh media containing 10ng/ml lipopolysaccharide (LPS).
Project description:A Transcriptomics Approach to Study the Biocompatibility and Finding out the Potential Applications of Magnetite (Fe3O4) Nanoparticles Here in this study, we examine the molecular effects of uptake of Fe3O4 nanoparticles using a whole genome microarray study in human epithelial cancer cell line. 38 genes (55%) out of 69 downregulated genes were found to be associated with TGF-beta or BMP signaling including six genes, Id1, Id2, Id3, Caspase-9, Smad6 and SMAD7, important negative regulators of these signaling pathways involved in development and tumorigenesis.
Project description:Gold nanoparticles (Au NPs) are uniquely suited for various biomedical applications due to the combination of their optical properties with their easily functionalized surfaces. The Au NP surface can be tailored to improve biocompatibility while also attaching targeting ligands or drugs. However, information on how these tailored surface chemistries may affect cell gene expression is scarce. Using two model human cells line, human dermal fibroblasts and prostate cancer cells, microarray experiments measured gene expression over 27,000 human genes. Each of the cell lines was exposed to four related types of surface-modified Au NPs at two different concentrations, and the microarray data was analyzed by weighted gene correlation network analysis and gene functional annotation. Au NPs were shown to affect genes associated with a variety of cellular functions, and surface charge and chemistry were linked with the types of parthways changed and the degree of which those changes occured. Nanoparticle induced gene expression in PC3 and HDF cells was measured after 24 hour exposure to nanoparticles of four different surface coating types. RNA from three separate culture samples were used for each nanoparticle-cell combinations, along with three control samples not exposed to nanoparticles at all.
Project description:ZnO nanoparticles can elicit a range of cytotoxic responses in different cells in vitro that may reflect either Zn2+ dissolution or nanoparticle-specific effects. Coating the ZnO nanoparticles may mitigate their cytotoxicity. We aimed to capture whole genome transcriptional profiles (up and down regulated) at time-points associated with distinct cytotoxic responses in cells treated with two types of uncoated (Nanosun, Z-COTE) or two types of coated (HP1, MAX) ZnO nanoparticles, compared to untreated cells. hONS cells were incubated with 25ug/ml ZnO nanoparticles (uncoated: Nanosun and Z-COTE; coated: MAX, HP1) for 2h and 6h and their expression profiles were compared to time-matched untreated cells.