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Erschienen in: Acta Neuropathologica 1/2006

01.01.2006 | Regular Paper

Identification of histological markers for malignant glioma by genome-wide expression analysis: dynein, α-PIX and sorcin

verfasst von: Takashi Yokota, Jun Kouno, Koji Adachi, Hiroshi Takahashi, Akira Teramoto, Koshi Matsumoto, Yuichi Sugisaki, Masamitsu Onda, Tatsuhiko Tsunoda

Erschienen in: Acta Neuropathologica | Ausgabe 1/2006

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Abstract

Glioblastoma multiforme (GBM), the most malignant class of glial neoplasm (grade IV in WHO criteria), carries the worst clinical prognosis among primary brain tumors in adults. To identify a set of genes involved in the tumorigenesis of GBM, we evaluated expression profiles of GBM tissues from 11 patients using a cDNA microarray representing 25,344 human genes. By comparing the profiles with those of normal brain tissue, we identified a number of differentially expressed genes: 54 with increased expression and 45 with reduced expression in GBMs. Semi-quantitative RT-PCR experiments with 6 of those genes confirmed higher expression of DNCH2, ARHGEF6, NPM1 and SRI and lower expression of NRGN and TM4SF2 in GBM tumors. Immunohistochemical staining for 3 of the respective gene products, dynein (product of DNCH2), α-PIX (product of ARHGEF6), and sorcin (product of SRI) indicated that this technique might be useful for histological grading of glial tumors. To establish criteria for this diagnostic approach, we scored glial tumor tissues of different histological grades according to the staining results; the scores were significantly higher in anaplastic astrocytomas and GBMs than in diffuse astrocytomas or normal brain tissues. These findings indicated that levels of these three proteins might serve as histological markers for malignant glioma classification.
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Metadaten
Titel
Identification of histological markers for malignant glioma by genome-wide expression analysis: dynein, α-PIX and sorcin
verfasst von
Takashi Yokota
Jun Kouno
Koji Adachi
Hiroshi Takahashi
Akira Teramoto
Koshi Matsumoto
Yuichi Sugisaki
Masamitsu Onda
Tatsuhiko Tsunoda
Publikationsdatum
01.01.2006
Verlag
Springer-Verlag
Erschienen in
Acta Neuropathologica / Ausgabe 1/2006
Print ISSN: 0001-6322
Elektronische ISSN: 1432-0533
DOI
https://doi.org/10.1007/s00401-005-1085-6

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