Abstract：
:More than 35 different partner genes with the mixed lineage leukemia (MLL) gene have been cloned from leukemia cells with translocations involving chromosome 11 band q23. In this study, we report on a novel fusion partner of the MLL gene, AF4p12, which we have identified as the human homologue to the furry gene of Drosophila. AF4p12, highly conserved in evolution, encodes a large protein of 3,105 amino acids. The expression of AF4p12 has been preferentially detected in colon, placenta, and brain tissues and in tumor cells of lymphoid origin. We show that the t(4;11)(p12;q23) translocation results in the creation of a chimeric RNA encoding a putative fusion protein containing 1,362 amino acids from the NH2-terminal part of MLL and 712 amino acids from the COOH-terminal part of AF4p12. FLT3 and HOXA9 genes are overexpressed in this leukemia. We found that the COOH-terminal part of AF4p12 fused to MLL contains a leucine zipper motif and exhibits transcriptional activation properties when fused to Gal4 DNA-binding domains in transient transfection assays. The AF4p12 fragment fused to MLL may contribute to the oncogenic activation of MLL, possibly through specific recruitment of the transcriptional machinery.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Hayette S,Cornillet-Lefebvre P,Tigaud I,Struski S,Forissier S,Berchet A,Doll D,Gillot L,Brahim W,Delabesse E,Magaud JP,Rimokh Rdoi
10.1158/0008-5472.CAN-05-1325subject
Has Abstractpub_date
2005-08-01 00:00:00pages
6521-5issue
15eissn
0008-5472issn
1538-7445pii
65/15/6521journal_volume
65pub_type
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