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NUP98 gene fusions in hematologic malignancies.

D H Lam1, P D Aplan

  • 1Department of Immunology, Roswell Park Cancer Institute, Buffalo, NY, USA.

Leukemia
|October 30, 2001
PubMed
Summary

Chromosomal translocations involving the NUP98 gene are linked to various leukemias. These rearrangements can create fusion proteins, and some occur in therapy-related leukemia, suggesting chemotherapy

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Area of Science:

  • Hematology
  • Cancer Genetics
  • Molecular Biology

Background:

  • Acute leukemia frequently involves chromosomal translocations.
  • Molecular analysis of these translocations enhances understanding of leukemogenesis.
  • The NUP98 gene is implicated in various leukemia subtypes.

Purpose of the Study:

  • To investigate chromosomal translocations involving the NUP98 gene.
  • To understand the role of NUP98 gene fusions in leukemia.
  • To explore the potential link between genotoxic agents and NUP98 rearrangements.

Main Methods:

  • Cloning and molecular analysis of chromosomal translocations.
  • Identification of fusion transcripts and proteins.
  • Analysis of patient data, including therapy-related leukemia cases.

Main Results:

  • At least eight distinct NUP98 rearrangements have been identified.
  • Fusion proteins result from the juxtaposition of NUP98 GLFG repeats with partner gene C-termini.
  • NUP98 translocations are observed in therapy-related acute myelogenous leukemia and myelodysplastic syndrome.

Conclusions:

  • NUP98 rearrangements are significant in acute leukemia pathogenesis.
  • Fusion proteins generated by NUP98 translocations contribute to leukemic transformation.
  • Genotoxic chemotherapeutic agents may induce NUP98 chromosomal rearrangements.

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