## Abstract ^3^Hβleucine incorporation was assayed in L5178Y cells as a measure for protein synthesis. Protein synthesis was inhibited by short duration heat shock, actinomycin, cordycepin or a combination of these agents. Dibutyryl cyclic AMP had little or no effect upon protein synthesis in contr
Effect of hyperthermia on protein biosynthesis in L5178Y murine leukemic lymphoblasts
β Scribed by J. E. Fuhr
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- English
- Weight
- 477 KB
- Volume
- 84
- Category
- Article
- ISSN
- 0021-9541
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β¦ Synopsis
Abstract
The effects of elevated temperatures upon protein biosynthesis were determined in L5178Y murine leukemic lymphoblasts. The rate of protein synthesis was inhibited proportionately to the increase in temperature. Efforts were made to determine the mechanism of heat inactivation of protein synthesis by studying the requirements for recovery of activity after the cells were returned to 37Β°C. The ability of actinomycin to block the recovery process suggests that elevated temperatures destroy or inactivate a species of RNA required for protein synthesis. Loss of RNA during heating of the cells is apparently at least partially dependent on protein synthesis, since the presence of cycloheximide during heat shock, is capable of ameliorating the effects of short duration heat treatment.
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