Inhaled multi-walled carbon nanotubes-induced gene expression profile in rat lung (NM-401)
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ABSTRACT:
ORGANISM(S): Rattus norvegicus
PROVIDER: GSE113528 | GEO | 2020/12/01
REPOSITORIES: GEO
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Project description:In this work we study the pulmonary toxicological properties of carbon nanotubes using molecular toxicological approache. For this, we exposed Sprague Dawley rats by nose-only inhalation 6 hours/day, 5 days/week for 4 weeks. Lung samples have been collected up to 180 days after the end of exposure and transcriptomics analysis were performed.
2020-12-01 | GSE113531 | GEO
Project description:Inhaled multi-walled carbon nanotubes-induced gene expression profile in rat lung (NM-401)
| PRJNA451462 | ENA
Project description:The microarray investigations were part of a toxicological investigation of the effect of exposure to single-walled carbon nanotubes (SWCNTs) to macrophages and non-phagocytotic cells The results of this study are accepted for publication in Toxicological Research with the title: The toxic effects of single-wall carbon nanotubes are linked to the phagocytic ability of cells
2014-01-03 | GSE53765 | GEO
Project description:Multi-walled carbon nanotubes (MWCNTs) are among the most promising nanomaterials because of their physical and chemical properties. However, since they are biopersistent fiber-like materials which share similarities with asbestos, concerns have arisen about their health effects. With their various industrial usages, occupational exposure to MWCNTs may occur mainly by inhalation as these nanomaterials can get aerosolised. The number of toxicological studies on CNTs has steadily increased for the last decades. Different works showed that MWCNT exposure by inhalation or intratracheal instillation could lead to pulmonary toxicity, such as lung inflammation, genotoxicity, fibrosis or lung cancer (Kasai et al. 2015, Kasai et al. 2016, Porter et al. 2013, Suzui et al. 2016). To date, only one MWCNT (MWNT-7) has been classified as possibly carcinogen to human (Group 2B) while the others have not been as classifiable as to their carcinogenicity to humans (Group 3) because of the lack of data on their carcinogenic potential (IARC 2017). Because of the wide variety of CNTs with various length, diameter or functionalisation, additional effort is required to assess their pulmonary toxicity. As a complementary approach to conventional toxicological assays, the omics methods are useful technologies for the mechanistic understanding of the toxicological effects observed following exposure to chemicals and particulate matters. Importantly, they can also be used as predictive tools for identifying the mode of action of other particles with similar physical and chemical characteristics. These molecular approaches may also be used for the discovery of exposure markers or early markers of adverse effects, before the appearance of clinical signs of a disease (Rahman et al. 2017). Several studies assessed gene expression alteration following in vivo exposure to CNTs (Poulsen et al. 2015, Snyder-Talkington et al. 2013, Ellinger-Ziegelbauer and Pauluhn 2009). These omics approaches were used to identify genes and pathways modulated in response to exposure. However, there are still too few studies to assess the link between MWCNT physico-chemical properties, global gene or protein expression profiles, and long-term effects. In a previous study, we showed that inhalation of two pristine MWCNTs, the long and thick NM-401, and the short and thin NM-403, induced alveolar neutrophilic granulocyte influx, a hallmark of inflammation, which was proportional to the lung CNT BET surface deposited dose (Gate et al. 2019). However, due to their different physical and chemical properties, one could assume that these two CNTs may have diverse toxicological profiles, but the conventional toxicology approaches used in this early work were probably not sensitive enough to identify such differences. In order to gain additional insight about their toxicological properties, in the current study, we compare the alteration induced by the two MWCNTs on the transcriptome in the lung tissue and the proteome in the broncho-alveolar lavage fluid (BALF) after rat exposure by inhalation. The omics analyses were performed from 3 days up to 180 days.
2021-01-04 | PXD018900 | Pride
Project description:Multi-walled carbon nanotubes (MWCNTs) are among the most promising nanomaterials because of their physical and chemical properties. However, since they are biopersistent fiber-like materials which share similarities with asbestos, concerns have arisen about their health effects. With their various industrial usages, occupational exposure to MWCNTs may occur mainly by inhalation as these nanomaterials can get aerosolised. The number of toxicological studies on CNTs has steadily increased for the last decades. Different works showed that MWCNT exposure by inhalation or intratracheal instillation could lead to pulmonary toxicity, such as lung inflammation, genotoxicity, fibrosis or lung cancer (Kasai et al. 2015, Kasai et al. 2016, Porter et al. 2013, Suzui et al. 2016). To date, only one MWCNT (MWNT-7) has been classified as possibly carcinogen to human (Group 2B) while the others have not been as classifiable as to their carcinogenicity to humans (Group 3) because of the lack of data on their carcinogenic potential (IARC 2017). Because of the wide variety of CNTs with various length, diameter or functionalisation, additional effort is required to assess their pulmonary toxicity. As a complementary approach to conventional toxicological assays, the omics methods are useful technologies for the mechanistic understanding of the toxicological effects observed following exposure to chemicals and particulate matters. Importantly, they can also be used as predictive tools for identifying the mode of action of other particles with similar physical and chemical characteristics. These molecular approaches may also be used for the discovery of exposure markers or early markers of adverse effects, before the appearance of clinical signs of a disease (Rahman et al. 2017). Several studies assessed gene expression alteration following in vivo exposure to CNTs (Poulsen et al. 2015, Snyder-Talkington et al. 2013, Ellinger-Ziegelbauer and Pauluhn 2009). These omics approaches were used to identify genes and pathways modulated in response to exposure. However, there are still too few studies to assess the link between MWCNT physico-chemical properties, global gene or protein expression profiles, and long-term effects. In a previous study, we showed that inhalation of two pristine MWCNTs, the long and thick NM-401, and the short and thin NM-403, induced alveolar neutrophilic granulocyte influx, a hallmark of inflammation, which was proportional to the lung CNT BET surface deposited dose (Gate et al. 2019). However, due to their different physical and chemical properties, one could assume that these two CNTs may have diverse toxicological profiles, but the conventional toxicology approaches used in this early work were probably not sensitive enough to identify such differences. In order to gain additional insight about their toxicological properties, in the current study, we compare the alteration induced by the two MWCNTs on the transcriptome in the lung tissue and the proteome in the broncho-alveolar lavage fluid (BALF) after rat exposure by inhalation. The omics analyses were performed from 3 days up to 180 days.
2021-11-22 | PXD029842 | Pride
Project description:The microarray investigations were part of a toxicological investigation of the effect of exposure to single-walled carbon nanotubes (SWCNTs) to macrophages and non-phagocytotic cells The results of this study are accepted for publication in Toxicological Research with the title: The toxic effects of single-wall carbon nanotubes are linked to the phagocytic ability of cells Cell lines were treated for 24 hours either with water (vehicle control) or SWCNTs for 24 hours and the toxic effects were investigated including gene expression changes by affymetrix microarrays.
2014-01-03 | E-GEOD-53765 | biostudies-arrayexpress
Project description:In this work we study the pulmonary toxicological properties of titanium dioxyde nanoparticles using molecular toxicological approach. For this, we exposed F344 rats by nose-only inhalation 6 hours/day, 5 days/week for 4 weeks. Lung samples have been collected up to 28 days after the end of exposure and transcriptomics analysis were performed.
2021-06-30 | GSE145479 | GEO
Project description:Inhaled multi-walled carbon nanotubes-induced gene expression profile in rat lung (NM-403)
| PRJNA451467 | ENA
Project description:Multi-walled carbon nanotubes (MWCNTs) are extensively produced and used in composite materials and electronic applications, thus increasing risk of worker and consumer exposure. MWCNTs are an inhomogeneous group of nanomaterials that exist in various lengths, shapes and with different metal compositions, which makes hazard evaluation difficult. However, several studies suggest that length plays an important role in the toxicity induced by MWCNTs. How the length influences toxicity at the molecular level is yet to be characterized. We used high-content genomics tools to compare pulmonary responses after exposure to a short, entangled MWCNT to the pulmonary responses after exposure to a long, stiffer MWCNT at the global transcriptomic level. Female C57BL/6 mice were exposed by single intratracheal instillation to 18, 54 or 162 µg/mouse of a short MWCNT (NRCWE-26 (NC-7000), 847±102 nm in length) or long MWCNT (NM-401 (CP-0006-SG), 4048±366 nm in length). Lung tissues were harvested 24 h, 3 d and 28 d after exposure.
2015-02-18 | GSE55286 | GEO
Project description:Multi-walled carbon nanotubes (MWCNTs) are extensively produced and used in composite materials and electronic applications, thus increasing risk of worker and consumer exposure. MWCNTs are an inhomogeneous group of nanomaterials that exist in various lengths, shapes and with different metal compositions, which makes hazard evaluation difficult. However, several studies suggest that length plays an important role in the toxicity induced by MWCNTs. How the length influences toxicity at the molecular level is yet to be characterized. We used high-content genomics tools to compare pulmonary responses after exposure to a short, entangled MWCNT to the pulmonary responses after exposure to a long, stiffer MWCNT at the global transcriptomic level. Female C57BL/6 mice were exposed by single intratracheal instillation to 18, 54 or 162 M-BM-5g/mouse of a short MWCNT (NRCWE-26 (NC-7000), 847M-BM-1102 nm in length) or long MWCNT (NM-401 (CP-0006-SG), 4048M-BM-1366 nm in length). Lung tissues were harvested 24 h, 3 d and 28 d after exposure. This experiment examined the pulmonary transcriptional response of female C57BL/6 mice exposed to NRCWE-26, a short multi-walled carbon nanotube, and NM-401, a long multi-walled carbon nanotube, at three doses: D1 (18 M-NM-<g), D2 (54 M-NM-<g), D3 (162 M-NM-<g), and vehicle control. Each dose group was examined 1, 3 or 28 days post-exposure. Each dose group had 5-6 biological replicates. There were a total of 139 samples included in the final analysis using a two-color reference design.
2015-02-18 | E-GEOD-55286 | biostudies-arrayexpress