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A Simple Bioassay for the Evaluation of Vascular Endothelial Growth Factors
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Vascular Endothelial Growth Factor A isoform mRNA expression in pediatric acute myeloid leukemia

R C Kruizinga1, H J M de Jonge, K R Kampen

  • 1Division of Pediatric Oncology/Hematology, Department of Pediatrics, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.

Pediatric Blood & Cancer
|October 29, 2010
PubMed

Insights

High vascular endothelial growth factor A (VEGFA) protein expression in acute myeloid leukemia (AML) predicts poor survival. Specific VEGFA isoforms (VEGF121, VEGF165, VEGF183, VEGF189) show significant co-expression, suggesting one can represent all in future prognostic studies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • High vascular endothelial growth factor A (VEGFA) protein expression is linked to poor overall survival (OS) and relapse-free survival (RFS) in acute myeloid leukemia (AML).
  • The prognostic significance of individual VEGFA isoforms in AML remains largely undetermined.

Purpose of the Study:

  • To investigate the mRNA expression levels of various VEGFA isoforms in pediatric AML.
  • To explore the correlation between VEGFA isoform expression and clinicopathologic features and patient outcomes.

Main Methods:

  • Quantification of VEGF121, VEGF145, VEGF148, VEGF165, VEGF183, and VEGF189 mRNA expression in pediatric AML patient samples.
  • Statistical analysis to assess co-expression patterns and relationships with clinical characteristics and survival data.

Main Results:

  • A significant co-expression was observed among VEGF121, VEGF165, VEGF183, and VEGF189 isoforms (mean rho = 0.716, P < 0.0001).
  • These findings suggest a coordinated expression pattern for a subset of VEGFA isoforms.

Conclusions:

  • The co-expression of specific VEGFA isoforms (VEGF121, VEGF165, VEGF183, VEGF189) in pediatric AML supports using a single representative isoform for future prognostic studies.
  • Measuring one of these isoforms could serve as a surrogate for overall VEGFA isoform expression in assessing prognostic importance in AML.

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