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Published on: November 13, 2013
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Cysteamine affects skeletal development and impairs motor behavior in zebrafish.
Chao Chen1,2, Yongliang Zheng3,4, Xue Li1,5
1Birth Defects Group, Translational Research Institute of Brain and Brain-like Intelligence, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, China.
Frontiers in Pharmacology
|September 5, 2022
Summary
Cysteamine, used in agriculture and medicine, causes skeletal defects and reduces mobility in zebrafish by increasing oxidative stress and inhibiting Notch signaling. Further research is needed to understand its full impact.
Area of Science:
- Developmental Biology
- Toxicology
- Zebrafish Models
Background:
- Cysteamine is a widely used agricultural feed additive and the sole targeted treatment for cystinosis.
- Clinical applications of cysteamine are associated with side effects, and its skeletal toxicity requires further investigation.
Purpose of the Study:
- To investigate the skeletal developmental toxicity of cysteamine using a zebrafish model.
- To elucidate the underlying mechanisms of cysteamine-induced skeletal defects and behavioral impairments.
Main Methods:
- Zebrafish embryos were exposed to varying concentrations of cysteamine (0.35–1.05 mM) from 6 to 72 hours post-fertilization.
- Skeletal morphology, somite development, spontaneous tail coiling, locomotion, oxidative stress levels, and gene expression (osteoclast/osteoblast markers, Notch signaling) were analyzed.
Main Results:
- Cysteamine exposure resulted in shortened body length, chondropenia, and abnormal somite development.
- Locomotor activity and behavioral abilities were significantly reduced in cysteamine-treated zebrafish.
- Increased oxidative stress, upregulation of osteoclast-related genes, and downregulation of Notch signaling were observed.
Conclusions:
- Cysteamine induces skeletal developmental defects and impairs locomotion in zebrafish.
- These adverse effects are potentially linked to cysteamine-induced oxidative stress, apoptosis, and Notch signaling inhibition.
