Aberrant proteomic expression of NSRP70 and its clinical implications and connection to the transcriptional level in adult acute leukemia

Leuk Res. 2014 Oct;38(10):1252-9. doi: 10.1016/j.leukres.2014.08.001. Epub 2014 Aug 10.

Abstract

We investigated three splicing factor proteins (SFPs; NSRP70, SRSF1, and HNRNPA1) in 187 adults with and without acute leukemia (AL). We showed that NSRP70 is a novel lymphoblastic AL (ALL) surrogate marker, which presented excellent diagnostic accuracy (92%) and disappeared during remission. Its highest molecular weight form, but not total amount, was associated with adverse genetic abnormalities in myeloid AL (AML). Furthermore, we identified that these SFPs were more prevalent in ALL than in AML; were not correlated with their mRNA levels; and their formations in AL may occur without coding mutations and relate to post-translational modifications.

Keywords: Acute leukemia; HNRNPA1; NSRP70; SRSF1; Splicing factor protein.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Alternative Splicing
  • Biomarkers, Tumor / analysis*
  • Female
  • Fluorescent Antibody Technique
  • Humans
  • Immunoblotting
  • Male
  • Middle Aged
  • Nuclear Proteins / biosynthesis*
  • Nuclear Proteins / genetics
  • Precursor Cell Lymphoblastic Leukemia-Lymphoma / genetics
  • Precursor Cell Lymphoblastic Leukemia-Lymphoma / metabolism*
  • Proteomics
  • Transcription, Genetic
  • Young Adult

Substances

  • Biomarkers, Tumor
  • NSRP1 protein, human
  • Nuclear Proteins