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Radiation Exposure Decreases the Quantity and Quality of Cardiac Stem Cells in Mice
- Source :
- PLoS ONE, Vol 11, Iss 5, p e0152179 (2016), PLoS ONE
- Publication Year :
- 2016
- Publisher :
- Public Library of Science (PLoS), 2016.
-
Abstract
- Radiation exposure may increase cardiovascular disease risks; however, the precise molecular/cellular mechanisms remain unclear. In the present study, we examined the hypothesis that radiation impairs cardiac stem cells (CSCs), thereby contributing to future cardiovascular disease risks. Adult C57BL/6 mice were exposed to 3 Gy γ-rays, and heart tissues were collected 24 hours later for further experiments. Although c-kit-positive cells were rarely found, radiation exposure significantly induced apoptosis and DNA damage in the cells of the heart. The ex vivo expansion of CSCs from freshly harvested atrial tissues showed a significantly lower production of CSCs in irradiated mice compared with healthy mice. The proliferative activity of CSCs evaluated by Ki-67 expression was not significantly different between the groups. However, compared to the healthy control, CSCs expanded from irradiated mice showed significantly lower telomerase activity, more 53BP1 foci in the nuclei, lower expression of c-kit and higher expression of CD90. Furthermore, CSCs expanded from irradiated mice had significantly poorer potency in the production of insulin-like growth factor-1. Our data suggest that radiation exposure significantly decreases the quantity and quality of CSCs, which may serve as sensitive bio-parameters for predicting future cardiovascular disease risks.
- Subjects :
- Male
0301 basic medicine
Telomerase
lcsh:Medicine
Apoptosis
Immunostaining
Biochemistry
Mice
Medicine and Health Sciences
Enzyme-Linked Immunoassays
lcsh:Science
Staining
Multidisciplinary
Cell Death
Radiology and Imaging
Stem Cells
Cell Staining
Heart
Radiation Exposure
Specimen preparation and treatment
Nucleic acids
Cell Processes
Anatomy
Stem cell
Research Article
DNA damage
Biology
03 medical and health sciences
Genetics
Animals
Potency
CD90
Immunoassays
Biology and life sciences
Myocardium
lcsh:R
DAPI staining
DNA
Cell Biology
Research and analysis methods
Mice, Inbred C57BL
Radiation exposure
030104 developmental biology
Nuclear staining
Immunology
Cardiovascular Anatomy
Immunologic Techniques
Cancer research
lcsh:Q
Subjects
Details
- Language :
- English
- ISSN :
- 19326203
- Volume :
- 11
- Issue :
- 5
- Database :
- OpenAIRE
- Journal :
- PLoS ONE
- Accession number :
- edsair.doi.dedup.....70212536315e5f15c84cb1b4214593e3