Gene-amplification model of carcinogenesis.

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Gene amplification in carcinogenesis

Gene amplification increases the number of genes in a genome and can give rise to karyotype abnormalities called double minutes (DM) and homogeneously staining regions (HSR), both of which have been widely observed in human tumors but are also known to play a major role during embryonic development due to the fact that they are responsible for the programmed increase of gene expression. The eti...

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Using our recently developed methodology for cytogenetic evaluation of solid tumors, we analyzed the occurrence of double minutes (DM) in chemically induced mouse skin carcinomas and papillomas. These studies revealed that DM were observed in 10% of the squamous cell carcinomas and in none of the papillomas screened. In addition, we analyzed four cell lines derived from mouse skin papillomas an...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 1981

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.78.4.2465