The HESI eSTAR Committee hosted a workshop on epigenetics and its potential implication for toxicology.
Symposium on Assessing Adverse Epigenetic Effects of Drugs and Chemicals
November 18, 2013
Washington, District of Columbia, USA
The mission of HESI’s Emerging Systems Toxicology for the Assessment of Risk (eSTAR) Committee is to develop and deliver innovative systems toxicology approaches for risk assessment. The committee aims to catalyze adoption of new translational and predictive tools that guide decision-making based on mechanistic understanding of toxicological response.
This Working Group has compiled a broad membership of experts across sectors and chemical classes to write a recently accepted manuscript on the state of the science on the use and potential applications of transcriptomic PODs. Future work will include discussion of bioinformatic methods to derive transcriptomic PODs.
A manuscript was accepted describing the group’s strategy to create transcriptomic biomarkers for particular pathways leading to rat tumors. Current work is to derive and refine the biomarkers. There is also planned experimental work to see gene expression difference in wild type and knock out rats in response to reference compounds.
Designed and launched a multi-site experimental program on the use of exosomal miRNAs expressed in response to renal toxicants.
The HESI eSTAR committee is proud to announce that it was awarded a $250,000 USD grant (U01) as part of the USFDA’s Biomarker Qualification Program in June 2022. This funding will be partnered with Committee resources to support a four-site ring trial generating additional data on the TGx-DDI (TGx = toxicogenomics; DDI = DNA damage inducing) biomarker. The TgX-DDI biomarker is currently under review by the FDA as part of the FDA Biomarker Qualification program. Pending the results of this final study, the marker is anticipated to gain FDA approval for optional use as added weight of evidence in the assessment of genotoxicity. The marker has the potential to improve upon the low specificity of in vitro chromosome damage assays used in current testing and to aid drug development by providing mechanistic insights into transcriptional changes occurring in genes involved in key DNA damage pathways.
Learn more about the use of the TGx-DDI transcriptomic biomarker for the genotoxicity assessment of data-poor chemicals here (poster presented at the 2021 EMGS Virtual Annual Meeting by Anne-Marie Fortin, University of Ottawa).
A manuscript on DNA de-modification analysis of clinical tumor samples was accepted; the project will sunset after an educational webinar.
This newly formed group is planning a proof of concept study to see if Cell Painting data (with or without transcriptomic data) can be predictive of existing rat liver data.
This newly formed group is exploring the use of error corrected sequencing to detect clonal expansion of non-genotoxic carcinogens.
The HESI eSTAR committee is proud to announce that it was awarded a $250,000 USD grant (U01) as part of the USFDA’s Biomarker Qualification Program in June 2022. This funding will be partnered with Committee resources to support a four-site ring trial generating additional data on the TGx-DDI (TGx = toxicogenomics; DDI = DNA damage inducing) biomarker. The TgX-DDI biomarker is currently under review by the FDA as part of the FDA Biomarker Qualification program. Pending the results of this final study, the marker is anticipated to gain FDA approval for optional use as added weight of evidence in the assessment of genotoxicity. The marker has the potential to improve upon the low specificity of in vitro chromosome damage assays used in current testing and to aid drug development by providing mechanistic insights into transcriptional changes occurring in genes involved in key DNA damage pathways.
US Environmental Protection Agency
GlaxoSmithKline
November 18, 2013
Washington, District of Columbia, USA
The HESI eSTAR Committee hosted a workshop on epigenetics and its potential implication for toxicology.
September 2, 2013 – September 4, 2013
Interlaken, Switzerland
HESI gave several presentations at Eurotox 2013.
May 16, 2013 – May 17, 2013
Paris, France
This workshop was held on 16-17 May 2013 at OECD Congress Center in Paris, France, with the goal to review progress in human carcinogenesis safety evaluation strategies and cancer risk assessment.
BMC Genomics, 2008
The use of gene expression profiling in both clinical and laboratory settings would be enhanced by better characterization of variance due to individual, environmental, and technical factors.
2009
This book chapter was published in Batch Effects and Noise in Microarray Experiments: Sources and Solutions.
Environmental Health Perspectives, 2010
In spite of the application of toxicogenomic (TGx) data to the field of toxicology for the past 10 years, the broad implementation and full impact of TGx for chemical and drug evaluation to improve decision making within organizations and by policy makers has not been achieved.
Mutation Research/Genetic Toxicology and Environmental Mutagenesis, 2012
The use of gene expression profiling in both clinical and laboratory settings would be enhanced by better characterization of variation due to individual, environmental, and technical factors.
Toxicology, 2015
Recent technological advances have led to rapid progress in the characterization of epigenetic modifications that control gene expression in a generally heritable way, and are likely involved in defining cellular phenotypes, developmental stages and disease status from one generation to the next.
Toxicological Sciences, 2015
Formalin-fixed paraffin-embedded (FFPE) tissue samples represent a potentially invaluable resource for transcriptomic research.
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