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2013, Number 2

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Rev Cub Gen 2013; 7 (2)

Oncogenic viruses

Reyes BK, Robaina CMS

Language: Spanish
References: 25
Page: 4-11
PDF size: 435.50 Kb.


ABSTRACT

Cancer has been traditionally associated to ionizing radiations and chemical carcinogens, but chronic viral infections account for 15 % to 20 % of tumoral diseases. Oncogenic viruses are a group of viruses producing tumors that can be classified into two groups according to their genetic material: DNA and RNA viruses. Oncogenes may be activated by different molecular mechanisms, two basic ones outstanding as leading to tumor formation: the insertion of a viral promoter and transduction. Human tumors most frequently associated with viruses are hepatocellular and cervix cancer, nasopharyngeal carcinoma, Burkitt’s and Hodgkin’s lymphomas and some types of leukemia.


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