Corton, J. Christopher published the artcileTowards replacement of animal tests with in vitro assays: a gene expression biomarker predicts in vitro and in vivo estrogen receptor activity, Recommanded Product: Ethyl 2-(4-chlorophenoxy)-2-methylpropanoate, the publication is Chemico-Biological Interactions (2022), 109995, database is CAplus and MEDLINE.
High-throughput transcriptomics (HTTr) has the potential to support efforts to reduce or replace some animal tests. In past studies, we described a computational approach utilizing a gene expression biomarker consisting of 46 genes to predict estrogen receptor (ER) activity after chem. exposure in ER-pos. human breast cancer cells including the MCF-7 cell line. We hypothesized that the biomarker model could identify ER activities of chems. examined by Endocrine Disruptor Screening Program (EDSP) Tier 1 screening assays in which transcript profiles of the same chems. were examined in MCF-7 cells. For the 62 chems. examined including 5 chems. examined in this study using RNA-Seq, the ER biomarker model accuracy was 1) 97% for in vitro reference chems., 2) 76-85% for guideline uterotrophic assays, and 3) 87-88% for guideline and nonguideline uterotrophic assays. For the same chems., these accuracies were similar or slightly better than those of the ToxCast ER model based on 18 in vitro assays. The performance of the ER biomarker model indicates that HTTr interpreted using the ER biomarker correctly identifies active and inactive ER reference chems. As part of the HTTr screening program the approach could rapidly identify chems. with potential ER bioactivities for addnl. screening and testing.
Chemico-Biological Interactions published new progress about 637-07-0. 637-07-0 belongs to chlorides-buliding-blocks, auxiliary class Inhibitor,Cell Cycle,PPAR, name is Ethyl 2-(4-chlorophenoxy)-2-methylpropanoate, and the molecular formula is C12H15ClO3, Recommanded Product: Ethyl 2-(4-chlorophenoxy)-2-methylpropanoate.
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