Plasma miRNA as Biomarkers for Assessment of Total-Body Radiation Exposure Dosimetry
2011
Plasma miRNA as Biomarkers for Radiation Exposure
Sample size: 40
publication
Evidence: high
Author Information
Author(s): Cui Wanchang, Ma Jinfang, Wang Yulei, Biswal Shyam
Primary Institution: Johns Hopkins University
Hypothesis
Plasma miRNA expression profiles can accurately reflect prior radiation exposure.
Conclusion
Plasma miRNA profiles can be highly predictive of different levels of radiation exposure.
Supporting Evidence
- Plasma miRNA expression signatures could distinguish mice that received total body irradiation doses of 0.5 Gy, 2 Gy, and 10 Gy with accuracy above 90%.
- Using a 40-sample training set, a 32 miRNA model was identified that achieved 97.5% overall accuracy in predicting radiation doses at 6 hours post-exposure.
- A 12 miRNA model was developed for 24 hours post-exposure, achieving 100% accuracy in distinguishing 2 Gy and 10 Gy doses.
Takeaway
Scientists found that tiny molecules in the blood called miRNAs can help tell how much radiation someone has been exposed to, which is really important after accidents.
Methodology
Mice were exposed to different doses of radiation, and their plasma was analyzed for miRNA expression using TaqMan arrays.
Limitations
The study was conducted in a murine model, which may not fully translate to humans.
Participant Demographics
C57BL6 mice, male, 6–8 weeks old.
Statistical Information
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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