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Related Experiment Video

Updated: Jun 2, 2026

Evaluation of Biomarkers in Glioma by Immunohistochemistry on Paraffin-Embedded 3D Glioma Neurosphere Cultures
06:32

Evaluation of Biomarkers in Glioma by Immunohistochemistry on Paraffin-Embedded 3D Glioma Neurosphere Cultures

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Nm23-h1 protein in oligodendrogliomas.

J Pavelic1, K Galltroselj, V Hlavka

  • 1RUDJER BOSKOVIC INST, DEPT MOLEC MED, MOLEC ONCOL LAB, ZAGREB 410001, CROATIA. UNIV ZAGREB, SCH MED, DEPT NEUROPATHOL, ZAGREB 41000, CROATIA. UNIV CINCINNATI, COLL MED, DEPT ANAT & CELL BIOL, CINCINNATI, OH 45267 USA.

International Journal of Oncology
|May 14, 2011
PubMed
Summary

Nm23-H1 protein is present in some brain tumors, but its levels do not reliably predict tumor aggressiveness or metastasis suppressor roles. Further research is needed for accurate glial tumor diagnosis.

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Area of Science:

  • Neuro-oncology
  • Molecular pathology
  • Cancer biology

Background:

  • Oligodendrogliomas are brain tumors with a spectrum of malignancy.
  • The role of nm23-H1 protein in glial tumor progression is not fully understood.
  • Previous studies suggested nm23-H1 as a metastasis suppressor.

Purpose of the Study:

  • To investigate nm23-H1 protein expression in human oligodendrogliomas.
  • To correlate nm23-H1 levels with tumor grade and aggressiveness.
  • To evaluate the potential of nm23-H1 as a prognostic marker in glial tumors.

Main Methods:

  • Immunohistochemistry was used to detect nm23-H1 protein in oligodendroglioma samples.
  • Tumor samples included oligodendroglioma (ODG-I), grade II (ODG-II), and transitional (ODG-T) oligodendrogliomas, and glioblastoma oligodendrogliale.

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  • Expression levels were compared across different tumor grades and normal brain tissue.

    • Main Results:

    • Nm23-H1 protein was detected in ODG-II and ODG-T tumors, increasing with proliferation.
    • No clear correlation was found between nm23-H1 expression and tumor aggressiveness.
    • A significant portion (76%) of glioblastoma oligodendrogliale samples were negative for nm23-H1, indicating altered gene expression.

    Conclusions:

    • Nm23-H1 protein expression in oligodendrogliomas does not consistently correlate with tumor grade or aggressiveness.
    • The findings challenge the proposed role of nm23-H1 as a universal tumor metastasis suppressor.
    • Nm23-H1 is not a reliable prognostic indicator for all glial tumors, but may aid in understanding tumor development and diagnosis.