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Radiation-induced translational control of gene expression
Amy Wahba1, Stacey L Lehman1, Philip J Tofilon1
1Radiation Oncology Branch, National Cancer Institute, Bethesda, MD, USA.
Translation (Austin, Tex.)
|July 14, 2017
Summary
Radiation exposure triggers gene expression changes that may protect cells. Analyzing polysome-bound RNA reveals that radiation impacts gene expression through translational control, offering new insights into cell survival and radiosensitization.
Area of Science:
- Molecular Biology
- Radiation Biology
- Genetics
Background:
- Radiation-induced gene expression is linked to cell survival.
- Traditional mRNA profiling often fails to correlate with protein levels due to posttranscriptional regulation.
Purpose of the Study:
- To investigate the role of translational control in radiation-induced gene expression.
- To identify mechanisms of cellular radioresponse and potential targets for radiosensitization.
Main Methods:
- Gene expression profiling of polysome-bound RNA.
- Analysis of translational profiles in response to radiation.
Main Results:
- Radiation modifies gene expression via translational control.
- Polysome-bound mRNA changes correlate with protein level changes.
Conclusions:
- Translational control is a key mechanism in cellular response to radiation.
- Profiling polysome-bound RNA provides a more accurate dataset for studying radioresponse mechanisms and developing radiosensitizers.
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