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Dose response analysis of monophthalates in the murine embryonic stem cell test

ABSTRACT: Three embryotoxic phthalate monoesters, monobutyl phthalate (MBuP), monobenzyl phthalate (MBzP) and mono-(2-ethylhexyl) phthalate (MEHP) and the non-embryotoxic monomethyl phthalate (MMP) were studied for their effects on gene expression at several concentrations that did not induce cytotoxicity.

ORGANISM(S): Mus musculus

PROVIDER: GSE53969 | GEO | 2014/04/07

SECONDARY ACCESSION(S): PRJNA234056

REPOSITORIES: GEO

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Dose response analysis of monophthalates in the murine embryonic stem cell test

Project description:Three embryotoxic phthalate monoesters, monobutyl phthalate (MBuP), monobenzyl phthalate (MBzP) and mono-(2-ethylhexyl) phthalate (MEHP) and the non-embryotoxic monomethyl phthalate (MMP) were studied for their effects on gene expression at several concentrations that did not induce cytotoxicity. 192 arrays

2014-04-07 | E-GEOD-53969 | biostudies-arrayexpress

Toxicoproteomics of environmental mixtures in prostate diseases

Project description:These data are from the following 2 experiments: 1. normal prostate stromal cells (BHPRS1) treated with either 0.1 uM mono(2-ethylhexyl) phthalate (MEHP), 3 uM perfluorooctanesulfonic acid (PFOS), the mixture of MEHP+PFOS, or DMSO vehicle (0.06% v/v); n=3 each 2. metastatic prostate epithelial cells (MT10) treated with 50 uM mono(2-ethylhexyl) phthalate (MEHP) or DMSO vehicle (0.06% v/v); n=4 each

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Transcriptomic effects of mono-(2-ethylhexyl) phthalate and all-trans retinoic acid in the cultured mouse fetal testes

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Toxicogenomic Screen of Replacements for bis(2-ethylhexyl) phthalate (DEHP) Using the Immortalized TM4 Sertoli Cell Line

Project description:Phthalate plasticizers are being phased out of consumer products because of their endocrine disrupting properties. This has resulted in a need to find safe alternatives that can plasticize polyvinyl chloride (PVC) while being inexpensive and biodegradable. We aim to study the toxicogenomic profile of mono-(2-ethylhexyl) phthalate (MEHP, the active metabolite of bis(2-ethylhexyl) phthalate, DEHP), the commercial plasticizer 1,2-cyclohexane dicarboxylic acid diisononyl ester (DINCH), and three plasticizers in development (1,4 butanediol dibenzoate (BDB), dioctyl succinate (DOS), and dioctyl maleate (DOM)) using the immortalized TM4 Sertoli cell line.

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Toxicogenomic Screen of Replacements for bis(2-ethylhexyl) phthalate (DEHP) Using the Immortalized TM4 Sertoli Cell Line

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Transcriptomic alterations induced by physiologically relevant level of mono(2-ethylhexyl) phthalate (MEHP) in oocytes and blastocysts

Project description:Mono(2-ethylhexyl) phthalate (MEHP), the main di(2-ethylhexyl) phthalate (DEHP) metabolite, is a known reproductive toxicant. Residual levels of 20 nM MEHP have been found in follicular fluid aspirated from IVF-treated women and DEHP-treated animals. It is not yet clear whether these residual MEHP levels have any effect on the follicle-enclosed oocyte or developing embryo. To clarify this point, bovine oocytes were matured with or without 20 nM MEHP for 22 h. Microarray analysis was performed for both mature oocytes and 7-day blastocysts. A feasibility examination was performed on mature oocytes (n = 200/group) to reveal a possible direct effect on the oocyte proteomic profile. Transcriptome analysis revealed MEHP-induced alterations in the expression of 456 and 290 genes in oocytes and blastocysts, respectively. The differentially expressed genes are known to be involved in various biological pathways, such as transcription process, cytoskeleton regulation and metabolic pathway. Among these, the expression of 9 genes was impaired in both oocytes exposed to MEHP (i.e., direct effect) and blastocysts developed from those oocytes (i.e., carryover effect). In addition, 191 proteins were found to be affected by MEHP in mature oocytes. The study explores, for the first time, the risk associated with exposing oocytes to physiologically relevant MEHP concentrations to the maternal transcripts. Although it was the oocytes that were exposed to MEHP, alterations carried over to the blastocyst stage, following embryonic genome activation, implying that these embryos are of low quality.

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DNA Methylation and Transcriptomic Profiles of Early Organogenesis-Stage Mouse Conceptuses after Exposure to Mono-2-Ethylhexyl Phthalate: Effects in the Absence and Presence of Neural Tube Defects

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Project description:The goal of this study was to assess whether changes in DNA methylation were observed following MEHP treatment in mouse embryos. Explanted GD8 mouse embryos were exposed to 100 ug/ml mono-2-ethylhexyl phthalate (MEHP) or dimethyl sulfoxide (0.01%; control) in whole embryo culture for 24 h. On GD9 tissues were manually separated using watchmaker's forceps and placed for genomic DNA isolation. At that time, the presennce (positive) or absence (negative) of a neural tube defect in the mouse embryos was noted.

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Alteration of the N6-methyladenosine Epitranscriptome Profile in Synthetic Phthalate-treated Human Induced Pluripotent Stem Cell-Derived Endothelial Cells [RNA-seq]

Project description:Background: This study aims to characterize the N6-methyladensosine epitranscriptomic profile induced by mono(2-ethylhexyl) phthalate (MEHP) exposure using a human-induced pluripotent stem cell-derived endothelial cell model. Methods: A multi-omic approach was employed by performing RNA sequencing in parallel with an m6A-specific microarray to identify mRNAs, lncRNAs, and miRNAs affected by MEHP exposure. Results: An integrative multi-omic analysis identified relevant biological features affected by MEHP, while functional assays provided a phenotypic characterization of these effects. Transcripts regulated by the epitranscriptome were validated with qPCR and Me-RIP. Conclusion: Our findings offer important information regarding the alterations occurring within the m6A epitranscriptome and the gene expression changes which occur in response to treatment with a synthetic phthalate in hiPSC-ECs and may be an important resource for future research.

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Alteration of the N6-methyladenosine Epitranscriptome Profile in Synthetic Phthalate-treated Human Induced Pluripotent Stem Cell-Derived Endothelial Cells [array]

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