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Expression of cytoskeletal and matrix genes following exposure to ionizing radiation: Dose-rate effects and protein synthesis requirements

Technical Report ·
DOI:https://doi.org/10.2172/70715· OSTI ID:70715
Experiments examined the effects of radiation dose-rate and protein synthesis inhibition expression of cytoskeletal and matrix elements in Syrian hamster embryo cells. Results demonstrated little effect of dose-rate for neutrons when comparing expression of {alpha}-tubulin and fibronectin genes. Cycloheximide repressed accumulation of {alpha}-tubulin-mRNA following exposure to high dose-rate neutrons or {gamma} rays. Cycloheximide did not affect accumulation of actin mRNA. Cycloheximide abrogated induction of fibronectin-mRNA which occurred following exposure to {gamma} rays and high dose-rate neutrons. These results suggest a role for labile proteins in the maintenance of {alpha}-tubulin and fibronectin mRNA accumulation following exposure to radiation. 24 refs., 3 tabs.
Research Organization:
Argonne National Lab., IL (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
70715
Report Number(s):
ANL/CMB/PP--84857; ON: DE95012218
Country of Publication:
United States
Language:
English