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Nakamura, T. et al.

Nakamura, Yamazaki, Hatano, Miura,

NUP98 is fused to PMX1 homeobox gene in human acute myelogenous leukemia with chromosome translocation t(1;11)(q23;p15).

The nucleoporin gene NUP98 was found fused to the HOXA9, HOXD13, or DDX10 genes in human acute myelogenous leukemia (AML) with chromosome translocations t(7;11)(p15;p15), t(2;11)(q35;p15), or inv(11)(p15;q22), respectively. We report here the fusion between the NUP98 gene and another homeobox gene PMX1 in a case of human AML with a t(1;11)(q23;p15) translocation. The chimeric NUP98-PMX1 transcript was detected; however, there was no reciprocal PMX1-NUP98 fusion transcript. Like the NUP98-HOXA9 fusion, NUP98 and PMX1 were fused in frame and the N-terminal GLFG-rich docking region of the NUP98 and the PMX1 homeodomain were conserved in the NUP98-PMX1 fusion, suggesting that PMX1 homeodomain expression is upregulated and that the fusion protein may act as an oncogenic transcription factor. The fusion to NUP98 results in the addition of the strong transcriptional activation domain located in the N-terminal region of NUP98 to PMX1. These findings suggest that constitutive expression and alteration of the transcriptional activity of the PMX1 homeodomain protein may be critical for myeloid leukemogenesis.[1]

References

NUP98 is fused to PMX1 homeobox gene in human acute myelogenous leukemia with chromosome translocation t(1;11)(q23;p15). Nakamura, T., Yamazaki, Y., Hatano, Y., Miura, I. Blood (1999) [Pubmed]

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