تفاصيل الوثيقة

نوع الوثيقة : مقال في مجلة دورية 
عنوان الوثيقة :
Development of a toxicogenomics signature for genotoxicity using a dose-optimization and informatics strategy in human cells.
Development of a toxicogenomics signature for genotoxicity using a dose-optimization and informatics strategy in human cells.
 
لغة الوثيقة : الانجليزية 
المستخلص : The development of in vitro molecular biomarkers to accurately predict toxicological effects has become a priority to advance testing strategies for human health risk assessment. The application of in vitro transcriptomic biomarkers promises increased throughput as well as a reduction in animal use. However, the existing protocols for predictive transcriptional signatures do not establish appropriate guidelines for dose selection or account for the fact that toxic agents may have pleiotropic effects. Therefore, comparison of transcriptome profiles across agents and studies has been difficult. Here we present a dataset of transcriptional profiles for TK6 cells exposed to a battery of well-characterized genotoxic and nongenotoxic chemicals. The experimental conditions applied a new dose optimization protocol that was based on evaluating expression changes in several well-characterized stress-response genes using quantitative real-time PCR in preliminary dose-finding studies. The subsequent microarray-based transcriptomic analyses at the optimized dose revealed responses to the test chemicals that were typically complex, often exhibiting substantial overlap in the transcriptional responses between a variety of the agents making analysis challenging. Using the nearest shrunken centroids method we identified a panel of 65 genes that could accurately classify toxicants as genotoxic or nongenotoxic. To validate the 65-gene panel as a genomic biomarker of genotoxicity, the gene expression profiles of an additional three well-characterized model agents were analyzed and a case study demonstrating the practical application of this genomic biomarker-based approach in risk assessment was performed to demonstrate its utility in genotoxicity risk assessment. 
ردمد : 1098-2280 
اسم الدورية : Environ Mol Mutagen 
المجلد : 56 
العدد : 6 
سنة النشر : 1436 هـ
2015 م 
نوع المقالة : مقالة علمية 
تاريخ الاضافة على الموقع : Sunday, April 24, 2016 

الباحثون

اسم الباحث (عربي)اسم الباحث (انجليزي)نوع الباحثالمرتبة العلميةالبريد الالكتروني
Heng-Hong LiLi, Heng-Hong باحث رئيسي  
Daniel R. HydukeHyduke, Daniel R.باحث مشارك  
Renxiang ChenChen, Renxiang باحث مشارك  
Pamela HeardHeard, Pamela باحث مشارك  
Carole L. YaukYauk, Carole L.باحث مشارك  
Jiri AubrechtAubrecht, Jiri باحث مشارك  
Albert J. Fornace JrFornace Jr, Albert J.باحث مشارك  

الملفات

اسم الملفالنوعالوصف
 38654.pdf pdf 

الرجوع إلى صفحة الأبحاث