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DNA damage caused by ionizing radiation in embryonic diploid fibroblasts WI-38 induces both apoptosis and senescence
Cmielová J, Havelek R, Jiroutová A, Kohlerová R, Seifrtová M, Muthná D, Vávrová J, Rezáčová M.
Language English Country Czech Republic
Document type Comparative Study, Research Support, Non-U.S. Gov't
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- MeSH
- Apoptosis genetics radiation effects MeSH
- Cell Line MeSH
- Diploidy MeSH
- Embryonic Stem Cells physiology radiation effects MeSH
- Fibroblasts physiology radiation effects MeSH
- Radiation, Ionizing MeSH
- Humans MeSH
- DNA Damage genetics radiation effects MeSH
- Cellular Senescence genetics radiation effects MeSH
- Cell Survival genetics radiation effects MeSH
- Check Tag
- Humans MeSH
- Publication type
- Research Support, Non-U.S. Gov't MeSH
- Comparative Study MeSH
Cellular response to ionizing radiation-induced damage depends on the cell type and the ability to repair DNA damage. Some types of cells undergo apoptosis, whereas others induce a permanent cell cycle arrest and do not proliferate. Our study demonstrates two types of response of embryonic diploid fibroblasts WI-38 to ionizing radiation. In the WI-38 cells p53 is activated, protein p21 increases, but the cells are arrested in G2 phase of cell cycle. Some of the cells die by apoptosis, but in remaining viable cells p16 increases, senescence associated DNA-damage foci occur, and senescence-associated beta-galactosidase activity increases, which indicate stress-induced premature senescence.
References provided by Crossref.org
Lit.: 25
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- $a DNA damage caused by ionizing radiation in embryonic diploid fibroblasts WI-38 induces both apoptosis and senescence / $c Cmielová J, Havelek R, Jiroutová A, Kohlerová R, Seifrtová M, Muthná D, Vávrová J, Rezáčová M.
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- $a Department of Medical Biochemistry, Faculty of Medicine in Hradec Králové, Charles University in Prague, Hradec Králové, Czech Republic. cmielovaj@lfhk.cuni.cz.
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- $a Lit.: 25
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- $a Cellular response to ionizing radiation-induced damage depends on the cell type and the ability to repair DNA damage. Some types of cells undergo apoptosis, whereas others induce a permanent cell cycle arrest and do not proliferate. Our study demonstrates two types of response of embryonic diploid fibroblasts WI-38 to ionizing radiation. In the WI-38 cells p53 is activated, protein p21 increases, but the cells are arrested in G2 phase of cell cycle. Some of the cells die by apoptosis, but in remaining viable cells p16 increases, senescence associated DNA-damage foci occur, and senescence-associated beta-galactosidase activity increases, which indicate stress-induced premature senescence.
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