Abstract
Uncoupling proteins are mitochondrial anions transporters that dissociate respiration from ATP synthesis through proton leaks. Uncoupling protein 2 reportedly plays a role in several physiological processes such as energy partitioning, nutrition, and fatty acid metabolism. The mRNA expression of rainbow trout UCP2 genes (UCP2A and UCP2B) was monitored during embryogenesis and early larval development. Both genes were recruited early and displayed similar steadily decreasing patterns from fertilization until hatching. The expression of UCP2A and UCP2B appeared significantly differentiated after hatching and during the yolk sac absorption, with UCP2A displaying higher expression. We suggest that UCP2 expression profiles in the rainbow trout embryo could be associated with the utilization of lipids as a source of energy during development.
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Acknowledgements
We wish to thank Kristy Anderson, Roseanna Athey, and Renee Fincham for their excellent technical assistance. Mention of trade names or commercial products in this publication is solely for the purpose of providing specific information and does not imply recommendation or endorsement by the US Department of Agriculture.
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Coulibaly, I., Gahr, S.A., Yao, J. et al. Embryonic expression of UCP2 in rainbow trout (Oncorhynchus mykiss). Fish Physiol Biochem 32, 249–253 (2006). https://doi.org/10.1007/s10695-006-9101-x
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DOI: https://doi.org/10.1007/s10695-006-9101-x