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 ORIGINAL ARTICLE
Year : 2014  |  Volume : 62  |  Issue : 1  |  Page : 57--61

The expression of disabled-2 is common reduced in meningiomas


1 Department of Neurosurgery, Meishan City People's Hospital, Meishan 620010, China
2 Department of Pathology, People's Liberation Army General Hospital of Chengdu Military Region, Chengdu 610083, Sichuan, China

Correspondence Address:
Xuemei Xie
Department of Pathology, People's Liberation Army General Hospital of Chengdu Military Region, Chengdu 610083, Sichuan
China
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Source of Support: It is supported by the national natural science foundation of China (81372497), Conflict of Interest: None


DOI: 10.4103/0028-3886.128299

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Aims: Disabled-2 (Dab2) is frequently down-regulated in several types of cancers. We examined the expression level of Dab2 in human meningiomas and meningioma cells, aimed to investigate its role in the oncogenesis and development of meningiomas. Materials and Methods: Western blot analysis was employed to detect Dab2 expression in 90 fresh tissues of meningiomas, 10 leptomeninges and two kinds of human malignant meningioma cell lines. Independent samples t-test, analysis of variance, Pearson Chi-square test and likelihood ratio test were used to analyze the expression level of Dab2 and its relations to clinic-pathological characteristics of meningiomas. Results: Dab2 was significantly down-regulated in classic meningiomas than the atypical or anaplastic meningiomas. The reduced or loss of expression of Dab2 were significantly correlated with the lower classification of meningiomas and negatively correlated with the invasive ability of adjacent tissues. Furthermore, it was reduced or lost in malignant meningioma cell lines (IOMM-Lee and KT21-MG1). The lower classification of meningiomas correlated with previous comorbidities; not with the gender, age of patients and smoking. Conclusions: Dab2 is expressed at variable level in meningiomas with different grade of malignancy and probably plays a pivotal role in the early stage of oncogenesis of malignant meningiomas.






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