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2004 MAY 5 - (NewsRx.com & NewsRx.net) -- Oncogenesis develops from a single base mutation in the internal ribosome entry site of Epstein-Barr nuclear antigen 1.
Recently published data show that "the U leader exon located within the 5' untranslated region of Epstein-Barr nuclear antigen 1 (EBNA1) gene contains an internal ribosome entry site (IRES) element. Sequence analysis of the U leader exon was undertaken in samples from 19 patients with infectious mononucleosis and 19 patients with lethal lymphoproliferative diseases and in 15 spontaneously established lymphoblastoid cell lines," wrote investigators in Japan.
"The sequence was conserved except for a single base substitution (T-C) at position 67,585. Although the mutation was detected in only one case of infectious mononucleosis, it was found in more than half of the lethal lymphoproliferative diseases and all lymphoblastoid cell lines," R. Endo and colleagues reported.
"The results suggest that a mutation in the RES element affects EBNA1 gene expression at the translational level ...
Source: HighBeam Research, Oncogenesis from single base mutation in IRES of Epstein-Barr nuclear...