Abstract:
:Intrachromosomal rearrangements involving the RET and the adjacent H4 or ELE1 gene are very frequent events in thyroid cancer of children from Belarus after the Chernobyl reactor accident (Klugbauer et al., 1995). The fusion product between ELE1 and RET (RET/ PTC3) seems to be the prevailing type of rearrangement as shown in a recently published study using a novel RT multiplex PCR approach in combination with the identification of the rearrangement type by RT-PCR and direct sequencing. Now we found a new type of RET rearrangement: By the 5'RACE method we demonstrated in cDNA the fusion of the tyrosine kinase domain of RET with a truncated ELE1 gene shorter than the ELE1 in RET/PTC3. Sequencing of genomic DNA revealed a rearrangement breakpoint at position 41 of a new ELE1 intron (522 bp in length). The new oncogene RET/ delta PTC3 is shortened by one ELE1 exon of 144 bp in length. Structural considerations of the ele1 amino terminal of RET/ delta PTC3 suggest that the transforming activity of the fusion protein is apparently not affected by this truncation. The exon lacking in RET/ delta PTC3 was found to code in the reciprocal transcript RET/ delta ELE1 and increased its size by 144 bp. Obviously the new and possibly additional ELE/RET fusion molecules might even increase the high prevalence of ELE1/RET rearrangements in thyroid carcinomas of children after the Chernobyl reactor accident.
journal_name
Oncogenejournal_title
Oncogeneauthors
Klugbauer S,Lengfelder E,Demidchik EP,Rabes HMsubject
Has Abstractpub_date
1996-09-05 00:00:00pages
1099-1102issue
5eissn
0950-9232issn
1476-5594journal_volume
13pub_type
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