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Measuring DNA Damage and Repair in Mouse Splenocytes After Chronic In Vivo Exposure to Very Low Doses of Beta- and Gamma-Radiation
Published on: July 3, 2015
Cell and tissue responses to genotoxic stress
Philip J Coates1, Sally A Lorimore, Eric G Wright
1Cancer Biology and Clinical Pathology Unit, Division of Pathology and Neurosciences, University of Dundee, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK. p.j.coates@dundee.ac.uk
The Journal of Pathology
|January 12, 2005
Summary
Cancer develops from accumulated mutations caused by cellular stress. Cell and tissue-specific DNA repair and microenvironment changes influence tumor susceptibility and progression.
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- Cancers result from accumulated genetic mutations disrupting cellular regulation.
- Cellular stress can cause oncogenic mutations, initiating cancer development.
Purpose of the Study:
- To review sources of cellular stress causing mutations and cellular responses to DNA damage.
- To assess cell- and tissue-specific responses to genotoxins and their role in tumor susceptibility.
Main Methods:
- Review of scientific literature on DNA damage, repair pathways, and cellular responses.
- Assessment of evidence for cell- and tissue-specific p53 activation and mediators.
- Evaluation of the role of the microenvironment in genotoxin-induced tumorigenesis.
Main Results:
- Cellular and tissue-specific responses to DNA damage, including p53-mediated growth arrest and apoptosis, vary.
- Genetic variations influence these responses, impacting tissue-specific tumor susceptibility.
- Genotoxic agents can alter the microenvironment, promoting tumorigenesis through inflammation-like processes.
Conclusions:
- Tumor susceptibility is determined by a balance between cell-intrinsic DNA repair and microenvironment alterations.
- Understanding these specific responses and genetic modifiers can inform novel cancer prevention and therapy strategies.
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