To study global expression profile of adult zebrafish in response to arsenic trioxide
Ontology highlight
ABSTRACT:
ORGANISM(S): Danio rerio
PROVIDER: GSE76024 | GEO | 2016/12/31
SECONDARY ACCESSION(S): PRJNA306030
REPOSITORIES: GEO
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Project description:DNA microarray analysis revealed that the genes related to cell cycle regulation were significantly induced at non- and sub-lethal concentrations (i.e., 0.05-6 µM), while the common feature of heavy metal toxicity such as oxidative damage and following increase in glutathione, heat shock proteins, and metallothionein were confirmed at high concentrations (i.e., 6-40 µM). The concentration dependent modulation of gene expression (induction of cell cycle genes, induction of cell cycle arrest genes and apoptotic genes) following exposure to arsenic was further supported by acceleration of cell proliferation, ROS generation, and cytotoxicity. Furthermore, three cell cycle genes (i.e., CDC25B, UBE2C, and PTTG1) were proposed as marker genes of inorganic arsenic exposure. Those results indicated the potential pro-carcinogenic actions of inorganic arsenic occur in environmentally relevant exposures (as low as 0.07 µM).
2013-07-02 | GSE48441 | GEO
Project description:DNA microarray analysis revealed that the genes related to cell cycle regulation were significantly induced at non- and sub-lethal concentrations (i.e., 0.05-6 M-BM-5M), while the common feature of heavy metal toxicity such as oxidative damage and following increase in glutathione, heat shock proteins, and metallothionein were confirmed at high concentrations (i.e., 6-40 M-BM-5M). The concentration dependent modulation of gene expression (induction of cell cycle genes, induction of cell cycle arrest genes and apoptotic genes) following exposure to arsenic was further supported by acceleration of cell proliferation, ROS generation, and cytotoxicity. Furthermore, three cell cycle genes (i.e., CDC25B, UBE2C, and PTTG1) were proposed as marker genes of inorganic arsenic exposure. Those results indicated the potential pro-carcinogenic actions of inorganic arsenic occur in environmentally relevant exposures (as low as 0.07 M-BM-5M). In this study, we examined the gene expression alteration in HepG2 cells exposed to arsenic trioxide (5 nM to 40 M-BM-5M as As2O3 for 48 hours) by DNA microarray with 8795 human genes. HepG2 cells were also exposed to M-NM-5-caprolactam as a reference of non carcinogen since it is the only chemical categorized in IARCM-bM-^@M-^Ys group 4 (Probably Not Carcinogenic). MQ water was used as control. For replicate, three dishes were prepared for each sample and individually treated in parallel.
2013-07-02 | E-GEOD-48441 | biostudies-arrayexpress
Project description:The purpose of this study is to search for aberrant genes in HaCaT keratinocytes after chronic exposure to arsenic trioxide. The objective of the investigation was to discover the mechanism of arsenic carcinogenicity in human epidermal keratinocytes. We hypothesize that a combined strategy of DNA microarray, qRT-PCR and gene function annotation will identify aberrantly expressed genes in HaCaT keratinocyte cell line after chronic treatment with arsenic trioxide. HaCaT cells were chronically exposed to 0.5µg/mL arsenic trioxide (As2O3) up to 22 passages and RNA was extracted. Microarray data analysis identified 14 up-regulated genes and 21 down-regulated genes in response to arsenic trioxide
2012-04-12 | GSE37192 | GEO
Project description:The goals of this study are to compare transcriptome of mutant p53 rescued by arsenic trioxide
2022-12-12 | GSE141892 | GEO
Project description:The purpose of this study is to search for aberrant genes in HaCaT keratinocytes after chronic exposure to arsenic trioxide. The objective of the investigation was to discover the mechanism of arsenic carcinogenicity in human epidermal keratinocytes. We hypothesize that a combined strategy of DNA microarray, qRT-PCR and gene function annotation will identify aberrantly expressed genes in HaCaT keratinocyte cell line after chronic treatment with arsenic trioxide. HaCaT cells were chronically exposed to 0.5M-BM-5g/mL arsenic trioxide (As2O3) up to 22 passages and RNA was extracted. Microarray data analysis identified 14 up-regulated genes and 21 down-regulated genes in response to arsenic trioxide Two experimental groups: 1. The treatment group was sub-cultured up to passage 22 to establish a chronic exposure state. 2. The passage control group was also sub-cultured up to 22 passages but with no exposure to arsenic trioxide. 4 technical replicates with 3 replicates making a total of 8X3 =24 samples HaCat Cell untreated (passage control): 1. H1_H001, H1_H002, H1_H003 2. H2_ H004, H2_H005, H2_H006 3. H3_ H007, H3_H008, H3_H009 4. H4_ H010, H4_H011, H4_H012 HaCat Cell treated with 0.5M-BM-5g/ml of arsenic trioxide: 5. A1_H013, A1_H014, A1_H015 6. A2_H016, A2_H017, A2_H018 7. A3_H019, A3_H020, A3_H021 8. A4_H022, A4_H023, A4_H024 Cell Type: Human Skin Keratinocyte: 1.5 M-CM-^W105 HaCaT cells were cultured in 7.5 ml of complete DMEM containing 10% Fetal Bovine Serum (FBS) and 1% penicillin, streptomycin in T-25 culture plate. Cells were incubated in a humidified atmosphere with 5% CO2 at 37 M-BM-:C. The treatment groups were exposed to 0.5M-BM-5g/mL As2O3 (equivalent to LC 0.5), and passaged at 90% confluent. Total RNA was extracted from 4 technical replicates of unexposed HaCaT cells and HaCaT cells chronically exposed to arsenic trioxide up to passage 22 using RNA STAT-60 (TEL-TEST, INC, Friendswood, TX, USA).
2012-04-11 | E-GEOD-37192 | biostudies-arrayexpress
Project description:Talemi2014 - Arsenic toxicity and
detoxification mechanisms in yeast
The model implements arsenite (AsIII)
transport regulation, its distribution within main cellular AsIII
pools and detoxification. The intracellular As pools considered are
free AsIII (AsIIIin), protein-bound AsIII (AsIIIprot), glutathione
conjugated AsIII (AsGS3) and vacuolar sequestered AsIII (vAsGS3).
This model is described in the article:
Mathematical modelling of
arsenic transport, distribution and detoxification processes in
yeast.
Talemi SR, Jacobson T, Garla V,
Navarrete C, Wagner A, Tamás MJ, Schaber J.
Mol. Microbiol. 2014 Jun; 92(6):
1343-1356
Abstract:
Arsenic has a dual role as causative and curative agent of
human disease. Therefore, there is considerable interest in
elucidating arsenic toxicity and detoxification mechanisms. By
an ensemble modelling approach, we identified a best
parsimonious mathematical model which recapitulates and
predicts intracellular arsenic dynamics for different
conditions and mutants, thereby providing novel insights into
arsenic toxicity and detoxification mechanisms in yeast, which
could partly be confirmed experimentally by dedicated
experiments. Specifically, our analyses suggest that: (i)
arsenic is mainly protein-bound during short-term (acute)
exposure, whereas glutathione-conjugated arsenic dominates
during long-term (chronic) exposure, (ii) arsenic is not stably
retained, but can leave the vacuole via an export mechanism,
and (iii) Fps1 is controlled by Hog1-dependent and
Hog1-independent mechanisms during arsenite stress. Our results
challenge glutathione depletion as a key mechanism for arsenic
toxicity and instead suggest that (iv) increased glutathione
biosynthesis protects the proteome against the damaging effects
of arsenic and that (v) widespread protein inactivation
contributes to the toxicity of this metalloid. Our work in
yeast may prove useful to elucidate similar mechanisms in
higher eukaryotes and have implications for the use of arsenic
in medical therapy.
This model is hosted on
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and identified by:
BIOMD0000000547.
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To the extent possible under law, all copyright and related or
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2024-09-02 | BIOMD0000000547 | BioModels
Project description:The goals of this study are to compare transcriptome of mutant p53 rescued by arsenic trioxide
2023-06-03 | GSE151696 | GEO
Project description:Darinaparsin (DPS) is an arsenic cytotoxin with a more favorable toxicity profile than the established anti-leukemic drug, arsenic trioxide (ATO). Here we report effects of DPS on a variety of solid tumor cell lines under normoxia as well as hypoxia, the latter an important characteristic of the tumor microenvironment. Using MTT and clonogenic assays, we demonstrated that DPS had potent cytotoxic activities under both normoxia and hypoxia, with IC50??s ~ 2- to 3-fold lower than ATO. Xenograft studies using tumor cell lines as well as patient-derived tumor tissues implanted under the renal capsule in mice confirmed the anti-tumor activity of DPS in vivo. DPS was also a more potent radiosensitizer under hypoxia than ATO in vitro, and sensitized solid tumors to radiation in vivo at doses that had no systemic toxicities. Interestingly, in contrast to previous reports of DPS effects on leukemic cells under normoxia, DPS-induced killing of hypoxic solid tumor cells was not dependent on ROS generation and oxidative damage. Instead, cDNA microarray analysis suggested that DPS inhibited oncogene- (such as RAS and MYC) associated gene expression. In fact, compared to normal mouse embryonic fibroblasts (MEFs), oncogene (RAS/E1A) transformed MEFs were markedly more sensitive to DPS-induced apoptosis under both normoxia and hypoxia. Altogether, these results demonstrate that DPS has significant and preferential cytotoxicity against solid tumor as compared with normal cells, and is an effective radiosensitizer. Since DPS is in early clinical development as a single agent, these findings have near term translational potential. time_series_design
2012-10-13 | E-GEOD-33001 | biostudies-arrayexpress
Project description:The key modifiers of sensitivity to Arsenic Trioxide (ATO) remained unclear, and we presented a genome-wide scale loss-of-function screening to identify the modulators of cell response to ATO.
2023-04-24 | GSE218982 | GEO
Project description:Darinaparsin (DPS) is an arsenic cytotoxin with a more favorable toxicity profile than the established anti-leukemic drug, arsenic trioxide (ATO). Here we report effects of DPS on a variety of solid tumor cell lines under normoxia as well as hypoxia, the latter an important characteristic of the tumor microenvironment. Using MTT and clonogenic assays, we demonstrated that DPS had potent cytotoxic activities under both normoxia and hypoxia, with IC50??s ~ 2- to 3-fold lower than ATO. Xenograft studies using tumor cell lines as well as patient-derived tumor tissues implanted under the renal capsule in mice confirmed the anti-tumor activity of DPS in vivo. DPS was also a more potent radiosensitizer under hypoxia than ATO in vitro, and sensitized solid tumors to radiation in vivo at doses that had no systemic toxicities. Interestingly, in contrast to previous reports of DPS effects on leukemic cells under normoxia, DPS-induced killing of hypoxic solid tumor cells was not dependent on ROS generation and oxidative damage. Instead, cDNA microarray analysis suggested that DPS inhibited oncogene- (such as RAS and MYC) associated gene expression. In fact, compared to normal mouse embryonic fibroblasts (MEFs), oncogene (RAS/E1A) transformed MEFs were markedly more sensitive to DPS-induced apoptosis under both normoxia and hypoxia. Altogether, these results demonstrate that DPS has significant and preferential cytotoxicity against solid tumor as compared with normal cells, and is an effective radiosensitizer. Since DPS is in early clinical development as a single agent, these findings have near term translational potential.
2012-10-13 | GSE33001 | GEO