Format

Send to:

Choose Destination
See comment in PubMed Commons below
Anal Cell Pathol (Amst). 2013;36(5-6):133-47. doi: 10.3233/ACP-140087.

Expression of WW domain-containing oxidoreductase WOX1 in human nervous system tumors.

Author information

  • 1Department of Neurosurgery, Mackay Memorial Hospital, Taipei, Taiwan Graduate Institute of Injury Prevention and Control, Taipei Medical University, Taipei, Taiwan.
  • 2Department of Cell Biology & Anatomy, Nation Cheng Kung University, Tainan, Taiwan.
  • 3Department of Pathology, University of Colorado Health Sciences Center, Denver, CO, USA.
  • 4Institute of Molecular Medicine, National Cheng Kung University College of Medicine, Tainan, Taiwan Guthrie Research Institute, Laboratory of Molecular Immunology, Sayre, PA, USA Department of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, NY, USA.
  • 5Department of Radiation Oncology, Mackay Memorial Hospital, Taipei, Taiwan Graduate Institute of Pharmacology, Taipei Medical University, Taipei, Taiwan.

Abstract

BACKGROUND AND OBJECTIVES:

We aimed to evaluate the expression levels of the tumor suppressor WOX1 in nervous system tumors and its co-expression with p53 and neurofibromatosis type 2/merlin (NF2) tumor suppressor gene products.

METHODS:

Immunohistochemistry, western blotting and in situ hybridization were used for WOX1 protein and WWOX mRNA expression. Immunofluorescence and electron microscopical immunohistochemistry were performed for colocalization of gene products.

RESULTS:

WOX1 expression is low in normal cortical neurons, mainly on the axon fibers, whereas there is moderate to high immunoreactivity in the cytosol and nuclei of certain tumor cells. In the microcystic (WHO grade I) and malignant (WHO grade III) meningiomas, WOX1 expression is intense, but various in transitional (WHO grade I) and atypical (WHO grade II) subtypes. WOX1 levels are moderate to high in the menigiotheliomatous area, but relatively low in the fibroblastic area. WOX1 and NF2/merlin, but not p53, colocalized in certain tumor cells, primarily at the borders of nuclei. Schwannoma and astrocytoma specimens stained moderately to strongly positive for the WOX1 protein. Interestingly, the expression of WOX1, NF2/merlin and mutant p53 is intense in high grade glioblastoma, but WOX1 expression is low in metastatic carcinoma or adenocarcinoma.

CONCLUSIONS:

The expression of WOX1 on different types of nervous system tumors, including primary and metastatic tumors, is differential.

KEYWORDS:

NF2/merlin; WOX1; brain tumors; meningioma; tumor suppressor gene

PMID:
24503545
[PubMed - indexed for MEDLINE]
PMCID:
PMC4605481
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Hindawi Publishing Corporation Icon for PubMed Central
    Loading ...
    Write to the Help Desk