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Page: << Prev | 1 | 2 Another article in the July issue of The Lancet Oncology suggests that DNA screening for certain biomarkers could help assess lung cancer risk in people exposed to secondhand smoke.
Many carcinogens in cigarette smoke are known to cause DNA lesions called DNA adducts and many carcinogens are known to leave unique signatures on cancer-related genes in the form of specific mutations at specific locations, noted Dr. Ahmad Besaratinia and Dr. Gerd Pfeifer, of the Beckman Research Institute of the City of Hope National Medical Center in Duarte, Calif.
They noted that a technique called DNA-lesion footprinting, in conjunction with mutagenicity analysis, is currently used to find carcinogen signatures. They proposed this technique be used in cancer-relevant genes, which are commonly mutated in smoke-related lung cancer.
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In fact, this method has already been used successfully to find adducts connected with various smoke-derived carcinogens, the researchers said.
More information
The U.S. National Cancer Institute has more about smokeless tobacco and cancer.
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-- Robert Preidt
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