Related Experiment Videos
Cold-induced ependymin expression in zebrafish and carp brain: implications for cold acclimation
1Institute of Marine Biotechnology, National Taiwan Ocean University, Keelung, Taiwan.
FEBS Letters
|October 6, 1999
Summary
Cold acclimation in fish involves changes in gene expression. Ependymin gene expression in the fish brain significantly increases upon cold exposure, suggesting its role in this process.
Area of Science:
- Molecular Biology
- Fish Physiology
- Gene Expression Analysis
Background:
- Cold acclimation is crucial for fish survival in low temperatures.
- Gene expression patterns are known to alter during cold adaptation.
- Understanding molecular mechanisms in fish brain is key to cold acclimation.
Purpose of the Study:
- To investigate the molecular mechanisms of cold acclimation in fish brain.
- To identify specific genes involved in the fish brain's response to cold.
Main Methods:
- Utilized PCR-based subtraction suppression hybridization to identify differentially expressed genes.
- Cloned and characterized cold-induced cDNA.
- Analyzed ependymin gene and protein expression in response to temperature changes.
Main Results:
- Identified and cloned a brain-specific gene, ependymin, induced by cold.
- Ependymin expression increased over 10-fold within 12 hours of cold exposure in Cyprinus carpio and Danio rerio.
- While soluble ependymin levels remained unchanged, insoluble ependymin increased twofold in the brain after cold treatment.
Conclusions:
- Increased ependymin expression is an early molecular event during fish cold acclimation.
- Ependymin likely plays a significant role in the fish brain's adaptation to cold temperatures.