Journal
ONCOGENE
Volume 22, Issue 37, Pages 5848-5854Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/sj.onc.1206697
Keywords
ionizing radiation; chromosome instability; chromosome breakage syndromes; epigenetic factors
Funding
- NCI NIH HHS [CA 83872, CA73924] Funding Source: Medline
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Radiation-induced genomic instability is characterized by an increased rate of genetic alterations including cytogenetic rearrangements, mutations, gene amplifications, transformation and cell death in the progeny of irradiated cells multiple generations after the initial insult. Chromosomal rearrangements are the best-characterized end point of radiation-induced genomic instability, and many of the rearrangements described are similar to those found in human cancers. Chromosome breakage syndromes are defined by chromosome instability, and individuals with these diseases are cancer prone. Consequently, chromosomal instability as a phenotype may underlie some fraction of those changes leading to cancer. Here we attempt to relate current knowledge regarding radiation-induced chromosome instability with the emerging molecular information on the chromosome breakage syndromes. The goal is to understand how genetic and epigenetic factors might influence the onset of chromosome instability and the role of chromosomal instability in carcinogenesis.
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