Influence of Radiation-induced Chromosomal Aberrations on the Viability of Tumour and Normal Mammalian Cells Method of Biological Dosimetry

1963 ◽  
Vol 6 (4) ◽  
pp. 305-322 ◽  
Author(s):  
I.M. Shapiro ◽  
Z.N. Faleyeva ◽  
I.B. Smirnova
Keyword(s):  
Chromosomal Aberrations ◽  
Mammalian Cells ◽  
Biological Dosimetry ◽  
Radiation Induced

Modeling cell response to low doses of photon irradiation: Part 2—application to radiation-induced chromosomal aberrations in human carcinoma cells

2015 ◽  
Vol 55 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Micaela Cunha ◽  
Etienne Testa ◽  
Olga V. Komova ◽  
Elena A. Nasonova ◽  
Larisa A. Mel’nikova ◽  
...  
Keyword(s):  
Chromosomal Aberrations ◽  
Cell Response ◽  
Carcinoma Cells ◽  
Low Doses ◽  
Human Carcinoma ◽  
Photon Irradiation ◽  
Radiation Induced

scholarly journals Replication Past the -Radiation-Induced Guanine-Thymine Cross-Link G[8,5-Me]T by Human and Yeast DNA Polymerase

2010 ◽  
Vol 2010 ◽  
pp. 1-10 ◽  
Author(s):  
Paromita Raychaudhury ◽  
Ashis K. Basu
Keyword(s):  
Dna Polymerase ◽  
Mammalian Cells ◽  
Translesion Synthesis ◽  
Kidney Cells ◽  
Equal Frequency ◽  
Cross Link ◽  
Dominant Mutation ◽  
Human Embryonic Kidney Cells ◽  
Radiation Induced

-Radiation-induced intrastrand guanine-thymine cross-link, G[8,5-Me]T, hinders replicationin vitroand is mutagenic in mammalian cells. Herein we reportin vitrotranslesion synthesis of G[8,5-Me]T by human and yeast DNA polymerase (hPol and yPol ). dAMP misincorporation opposite the cross-linked G by yPol was preferred over correct incorporation of dCMP, but further extension was 100-fold less efficient for :A compared to :C. For hPol , both incorporation and extension were more efficient with the correct nucleotides. To evaluate translesion synthesis in the presence of all four dNTPs, we have developed a plasmid-based DNA sequencing assay, which showed that yPol was more error-prone. Mutational frequencies of yPol and hPol were 36% and 14%, respectively. Targeted was the dominant mutation by both DNA polymerases. But yPol induced targeted in 23% frequency relative to 4% by hPol . For yPol , targeted and constituted 83% of the mutations. By contrast, with hPol , semi-targeted mutations (7.2%), that is, mutations at bases near the lesion, occurred at equal frequency as the targeted mutations (6.9%). The kind of mutations detected with hPol showed significant similarities with the mutational spectrum of G[8,5-Me]T in human embryonic kidney cells.

scholarly journals Radiation-Induced Breaks of DNA in Cultured Mammalian Cells

1969 ◽  
Vol 9 (3) ◽  
pp. 330-346 ◽  
Author(s):  
W. Veatch ◽  
S. Okada
Keyword(s):  
Mammalian Cells ◽  
Radiation Induced
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