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MRNA microarray analysis on young adult Caenorhabditis elegans exposed to MWCNT

ABSTRACT: In order to evaluate the identification of genes and pathways, the global gene expression profiles were assessed in response to multiwall carbon nanotube (MWCNT) on the soil nematode, Caenorhabditis elegans. We performed whole genome DNA microarray experiments with subsequent quantitative analysis conducted on selected genes.

ORGANISM(S): Caenorhabditis elegans

PROVIDER: GSE24847 | GEO | 2011/12/31

SECONDARY ACCESSION(S): PRJNA132063

REPOSITORIES: GEO

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mRNA microarray analysis on young adult Caenorhabditis elegans exposed to MWCNT

Project description:In order to evaluate the identification of genes and pathways, the global gene expression profiles were assessed in response to multiwall carbon nanotube (MWCNT) on the soil nematode, Caenorhabditis elegans. We performed whole genome DNA microarray experiments with subsequent quantitative analysis conducted on selected genes. We used synchronized C. elegans populations exposed to MWCNT for 4 and 24h, and whole genome microarrays to screen for global changes in C. elegans transcription profiles. Young adults of C.elegans were selected for RNA extraction and hybridization on Affymetrix microarrays.

2011-12-31 | E-GEOD-24847 | biostudies-arrayexpress

coculture SAEC and HMVEC exposed to MWCNT

Project description:This study compared global multi-walled carbon nanotube (MWCNT)-induced miRNA expression from human lung epithelial and microvascular endothelial cells in monoculture and coculture with miRNA expression from mouse lungs exposed to MWCNT. The concordant miRNA in human cell lines, mouse lung tissues and blood will be potential biomarkers for occupational and medical surveillance.

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mRNA microarray analysis on young adult Caenorhabditis elegans exposed to benzene, toluene, formaldehyde and a BTF mix

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mRNA microarray analysis on young adult Caenorhabditis elegans exposed to benzene, toluene, formaldehyde and a BTF mix

Project description:In order to evaluate the identification of genes and pathways, the global gene expression profiles were assessed in response to three chemicals (benzene (B), toluene (T), formaldehyde (F)) individually and as a BTF mix on the soil nematode, Caenorhabditis elegans. We performed whole genome DNA microarray experiments with subsequent quantitative analysis conducted on selected genes. We used synchronized C. elegans populations exposed to B, T, F or a BTF mix, and whole genome microarrays to screen for global changes in C. elegans transcription profiles. Young adults of C. elegans were selected for RNA extraction and hybridization on Affymetrix microarrays.

2011-12-31 | E-GEOD-23013 | biostudies-arrayexpress

Expression data from Caenorhabditis elegans exposed to albendazole

Project description:We have investigated how the model nematode Caenorhabditis elegans responds to and metabolizes albendazole; an important anthelmintic for human and animal parasite control. The transcriptional response of the mutant strain CB3474 ben-1(e1880)III, which is highly resistant to benzimidazoles due to a null mutation in the β-tubulin drug target, was examined. This approach was successful in minimizing transcriptional responses associated with non-specific stress or with the drug mode of action, resulting in only in a small subset of genes showing differential expression in response to drug exposure.

2010-06-14 | GSE21747 | GEO

Expression data from Caenorhabditis elegans exposed to ivermectin

Project description:We have investigated the transcriptomic response of the model nematode Caenorhabditis elegans to ivermectin (IVM); an important anthelmintic for human and animal parasite control. The transcriptomic response of the mutant strain DA1316 avr-14(ad1302); avr-15(ad1250); glc-1(pk54), which is highly resistant to ivermectin due to null mutations in three glutamate-gated chloride channel subunits, was examined. Despite the resistant nature of this strain, pharyngeal pumping rate was decreased following 4 hrs exposure to 100ng/ml and 1μg/ml ivermectin resulting in significant change in the expression level of genes associated with a fasting response.

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Caenorhabditis elegans

Project description:mRNA microarray analysis on young adult Caenorhabditis elegans exposed to MWCNT

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miRNA profiling of blood samples from MWCNT exposed mice

Project description:Pulmonary exposure to multiwalled carbon nanotubes (MWCNT) induces an inflammatory and rapid fibrotic response, although the long-term signaling mechanisms are unknown. The aim of this study was to examine the effects of 1, 10, 40, or 80 μg MWCNT administered by pharyngeal aspiration on bronchoalveolar lavage (BAL) fluid for polymorphonuclear cell (PMN) infiltration, lactate dehydrogenase (LDH) activity, and lung histopathology for inflammatory and fibrotic responses in mouse lungs 1 mo, 6 mo, and 1 yr postexposure. Further, a 120-μg crocidolite asbestos group was incorporated as a positive control for comparative purposes. Results showed that MWCNT increased BAL fluid LDH activity and PMN infiltration in a dose-dependent manner at all three postexposure times. Asbestos exposure elevated LDH activity at all 3 postexposure times and PMN infiltration at 1 mo and 6 mo postexposure. Pathological changes in the lung, the presence of MWCNT or asbestos, and fibrosis were noted at 40 and 80 μg MWCNT and in asbestos-exposed mice at 1 yr postexposure. To identify non-invasive miRNA biomarkers, miRNA profiling was performed in blood samples collected from MWCNT exposed mice.

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Toxicoproteomic and lipidomic analysis of human lung cells chronically exposed to MWCNT

Project description:Multi-walled carbon nanotubes (MWCNT) present a wide variety of exciting application opportunities. As MWCNT are produced in large quantities, occupational exposure and human health is of particular concern. However, there is no consensus regarding their potential harmful effects. In particular, chronic exposure to MWCNT and mechanisms of their action at protein and lipid levels are unknown. In this study, we aimed to investigate effects of long-term chronic exposure to MWCNT on cellular proteome and lipidome. Since the lung is the major target organ, an in vitro normal bronchial epithelial cell model was used. To better mimic exposure at occupational settings, cells were chronically exposed for 13 weeks to low-doses of MWCNT. MWCNT-treatment increased ROS levels in cells without increasing DNA damage and resulted in differential expression of multiple apoptotic proteins. A shotgun proteomic and lipidomic analysis of the MWCNT-exposed cells showed that of amongst the >5000 identified protein s,groups; more than 200 were altered in treated cells. Functional analysis revealed association of these differentially regulated proteins in various cellular processes such as cell death and survival, cellular assembly and organization. Similarly, the lipid profile of the MWCNT treated cells showed accumulation of multiple lipid classes. This is first study to present results indicating that long-term MWCNT-exposure of human normal lung cells at occupationally relevant low-dose may alter both the proteome and the lipidome profile of target epithelial cells in the lung.

2020-05-06 | PXD005970 | Pride

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