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Human Pluripotent Stem Cell Based Developmental Toxicity Assays for Chemical Safety Screening and Systems Biology Data Generation
Published on: June 17, 2015
[Exploration of developmental toxicity mechanism of pentachlorophenol using cDNA microarray]
Zhao-Yi Wu1, Ping Hu, Qing-Shun Zhao
1State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, China. wuzhaoyi_83@yahoo.com.cn
Huan Jing Ke Xue= Huanjing Kexue
|January 13, 2010
Summary
Pentachlorophenol (PCP) exposure altered gene expression in zebrafish embryos. Key molecular functions and signaling pathways, including BMP and FGF, were implicated in PCP developmental toxicity, suggesting new biomarker potential.
Area of Science:
- Environmental toxicology
- Molecular biology
- Zebrafish model systems
Context:
- Pentachlorophenol (PCP) is a widely used pesticide with known toxicity.
- Understanding PCP's impact on early development is crucial for risk assessment.
- Zebrafish embryos offer a rapid and relevant model for developmental toxicity studies.
Purpose:
- To investigate the transcriptomic changes in zebrafish embryos exposed to PCP.
- To identify molecular functions and signaling pathways affected by PCP exposure.
- To explore potential biomarkers for PCP-induced developmental toxicity.
Summary:
- Zebrafish embryos (0hpf) were exposed to 50 µg/L PCP for 8 hours.
- Gene expression analysis revealed 1,149 upregulated and 501 downregulated transcripts.
- Affected genes were associated with antioxidant, signal transducer, and transcription regulator activities.
- Signaling pathways including BMP, FGF, and Nodal, involving genes like smad2 and bmp4, were identified as potentially involved in PCP developmental toxicity.
Impact:
- This study provides a comprehensive transcriptomic profile of PCP exposure in zebrafish.
- Identified molecular pathways offer insights into the mechanisms of PCP developmental toxicity.
- Potential biomarkers were suggested for future research on PCP's adverse effects.
