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Bcl2-induced DNA Replication Stress Promotes Lung Carcinogenesis in Response to Space Radiation

Overview
Journal Carcinogenesis
Specialty Oncology
Date 2020 Mar 12
PMID 32157295
Citations 6
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Abstract

Space radiation is characterized by high-linear energy transfer (LET) ionizing radiation. The relationships between the early biological effects of space radiation and the probability of cancer in humans are poorly understood. Bcl2 not only functions as a potent antiapoptotic molecule but also as an oncogenic protein that induces DNA replication stress. To test the role and mechanism of Bcl2 in high-LET space radiation-induced lung carcinogenesis, we created lung-targeting Bcl2 transgenic C57BL/6 mice using the CC10 promoter to drive Bcl2 expression selectively in lung tissues. Intriguingly, lung-targeting transgenic Bcl2 inhibits ribonucleotide reductase activity, reduces dNTP pool size and retards DNA replication fork progression in mouse bronchial epithelial cells. After exposure of mice to space radiation derived from 56iron, 28silicon or protons, the incidence of lung cancer was significantly higher in lung-targeting Bcl2 transgenic mice than in wild-type mice, indicating that Bcl2-induced DNA replication stress promotes lung carcinogenesis in response to space radiation. The findings provide some evidence for the relative effectiveness of space radiation and Bcl-2 at inducing lung cancer in mice.

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References
1.
Miller Y, Dwyer-Nield L, Keith R, Le M, Franklin W, Malkinson A . Induction of a high incidence of lung tumors in C57BL/6 mice with multiple ethyl carbamate injections. Cancer Lett. 2003; 198(2):139-44. DOI: 10.1016/s0304-3835(03)00309-4. View

2.
Lecona E, Fernandez-Capetillo O . Replication stress and cancer: it takes two to tango. Exp Cell Res. 2014; 329(1):26-34. PMC: 4878650. DOI: 10.1016/j.yexcr.2014.09.019. View

3.
Ray M, Wang G, Barrish J, Finegold M, Demayo F . Immunohistochemical localization of mouse Clara cell 10-KD protein using antibodies raised against the recombinant protein. J Histochem Cytochem. 1996; 44(8):919-27. DOI: 10.1177/44.8.8756763. View

4.
Chimploy K, Diaz G, Li Q, Carter O, Dashwood W, Mathews C . E2F4 and ribonucleotide reductase mediate S-phase arrest in colon cancer cells treated with chlorophyllin. Int J Cancer. 2009; 125(9):2086-94. PMC: 2753276. DOI: 10.1002/ijc.24559. View

5.
Klopstock N, Katzenellenbogen M, Pappo O, Sklair-Levy M, Olam D, Mizrahi L . HCV tumor promoting effect is dependent on host genetic background. PLoS One. 2009; 4(4):e5025. PMC: 2660413. DOI: 10.1371/journal.pone.0005025. View