Continuous exposure of Chinook salmon embryo cells to an elevated incubation temperature of 24°C induces the transient expression of a set of heat-shock or stress proteins whereas maintenance of the cells at a higher incubation temperature of 28°C produces a continuous synthesis of these stress proteins. In vitro translation studies suggest that the temperature-dependent temporal pattern of stress-protein synthesis is correlated with the levels of stress-protein mRNA. This was verified using a recombinant-DNA probe complementary to the 70K heat-shock-protein mRNA. A transient increase in the level of the fish heat-shock 70K mRNA was observed in RNA samples isolated from cells continuously exposed at 24°C However, a constant increase in the level of this specific mRNA was found in RNA preparations obtained from cells maintained at 28°C Therefore, the temperature-dependent pattern of fish heat-shockprotein synthesis appears to be directly related to the level of heat-shock-protein mRNA.
Analysis of the temperature-dependent temporal pattern of heat-shock-protein synthesis in fish cells
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Lashitew Gedamu, Beverly Culham, John J. Heikkila; Analysis of the temperature-dependent temporal pattern of heat-shock-protein synthesis in fish cells. Biosci Rep 1 July 1983; 3 (7): 647–658. doi: https://doi.org/10.1007/BF01172875
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