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Childhood acute myelogenous leukaemia: association between PRAME, apoptosis- and MDR-related gene expression

Stefanie Goellner1, Daniel Steinbach, Tino Schenk

  • 1Department of Cell and Molecular Biology, Leibniz Institute for Natural Products Research and Infection Biology, Beutenbergstrasse 11a, 07745 Jena, Germany.

European Journal of Cancer (Oxford, England : 1990)
|September 19, 2006
PubMed

Insights

Preferentially expressed antigen of melanoma (PRAME) gene overexpression in childhood acute myelogenous leukemia (AML) correlates with reduced apoptosis and increased multi-drug resistance (MDR) gene expression, suggesting a higher risk for AML patients.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • The PRAME gene encodes an antigen recognized by T lymphocytes and is overexpressed in various cancers.
  • Overexpression of antiapoptotic and ABC transporter genes is linked to cancer cell survival and multi-drug resistance (MDR).

Purpose of the Study:

  • To investigate the relationship between PRAME overexpression and apoptosis/MDR-related gene expression in childhood de novo acute myelogenous leukemia (AML).
  • To determine if this association is a general phenomenon or specific to AML subtypes.

Main Methods:

  • Microarray analysis
  • Real-time quantitative PCR (RT-qPCR)
  • Analysis of childhood de novo AML patient samples.

Main Results:

  • PRAME upregulation in clinical AML samples was associated with decreased expression of apoptosis-related genes.
  • PRAME upregulation was also linked to the overexpression of genes encoding ABC transporters, which are associated with MDR.
  • The observed associations were consistent across analyzed AML patient samples.

Conclusions:

  • PRAME overexpression in childhood AML is linked to mechanisms that promote cell survival and drug resistance.
  • Patients with PRAME upregulation may face an elevated risk of developing multi-drug resistance (MDR).
  • These findings highlight PRAME as a potential biomarker for predicting MDR risk in AML.

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