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- W2012321893 abstract "Aberrations affecting the gene encoding the high mobility group protein HMGA2 (formerly HMGIC) have been found in a variety of human tumors, e.g., uterine leiomyomas, lipomas, and pulmonary chondroid hamartomas. These aberrations lead to fusion genes, transcriptional up-regulation, or aberrant transcripts of HMGA2. In the latter case, truncated transcripts consisting of exons 1 to 3 of HMGA2, encoding the three DNA-binding domains, and ectopic sequences derived from chromosome 12 are frequent. There are several lines of evidence indicating that the biological and tumorigenic features of truncated HMGA2 derivatives, i.e., those composed of the DNA-binding domains and a shortened acidic tail, clearly differ from those of the normal protein consisting of three DNA-binding domains and one large acidic tail. By sequencing the complete 112 kb third intron of HMGA2, we were able to detect several of the ectopic sequences, known as fused to HMGA2. Expression studies revealed co-expression of one of these transcripts with the normal transcript in tumors with 12q14-15 aberrations as well as in other tumors, and in normal tissues. Thus, this transcript (HMGA2b) is flanked by an alternative terminal exon of HMGA2. Due to the loss of the part encoding the acidic tail, the expression of the latter transcript may have more striking effects than the wild type HMGA2 (HMGA2a) in terms of tumorigenesis. This finding clearly indicates that functional studies also should address the role of the HMGA2b transcript." @default.
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- W2012321893 date "2002-03-19" @default.
- W2012321893 modified "2023-09-27" @default.
- W2012321893 title "Sequencing of intron 3 ofHMGA2 uncovers the existence of a novel exon" @default.
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- W2012321893 doi "https://doi.org/10.1002/gcc.10018" @default.
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