Multidimensional analysis of gene expression reveals TGFB1I1-induced EMT contributes to malignant progression of astrocytomas

被引：33

作者：

Liu, Yanwei ^{[1
,6
]}

Hu, Huimin ^{[1
,6
]}

Wang, Kuanyu ^{[4
]}

Zhang, Chuanbao ^{[2
,6
]}

Wang, Yinyan ^{[2
,6
]}

Yao, Kun ^{[5
,6
]}

Yang, Pei ^{[2
,6
]}

Han, Lei ^{[3
,6
]}

Kang, Chunsheng ^{[3
,6
]}

Zhang, Wei ^{[1
,2
,6
]}

Jiang, Tao ^{[1
,2
,6
,7
,8
]}

机构：

[1] Capital Med Univ, Dept Mol Neuropathol, Beijing Neurosurg Inst, Beijing, Peoples R China

[2] Capital Med Univ, Dept Neurosurg, Beijing Tiantan Hosp, Beijing, Peoples R China

[3] Tianjin Med Univ, Lab Neurooncol, Tianjin Neurol Inst, Tianjin, Peoples R China

[4] Dalian Med Univ, Dept Neurosurg, Affiliated Hosp 1, Dalian, Peoples R China

[5] Capital Med Univ, Dept Mol Neuropathol, Beijing Sanbo Brain Hosp, Beijing, Peoples R China

[6] CGCG, Beijing, Peoples R China

[7] China Natl Clin Res Ctr Neurol Dis, Beijing, Peoples R China

[8] Beijing Inst Brain Disorders, Ctr Brain Tumor, Beijing, Peoples R China

来源：

ONCOTARGET | 2014年 / 5卷 / 24期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

Astrocytomas; Malignant progression; Gene expression; TGFB1I1; EMT; EPITHELIAL-MESENCHYMAL TRANSITION; TGF-BETA; GLIOMAS; GLIOBLASTOMA; CLASSIFICATION; PATHWAY; IDH1; ABNORMALITIES; MUTATIONS; MARKER;

D O I：

10.18632/oncotarget.2518

中图分类号：

R73 [肿瘤学];

学科分类号：

100214 ;

摘要：

Malignant progression of astrocytoma is a multistep process with the integration of genetic abnormalities including grade progression and subtypes transition. Established biomarkers of astrocytomas, like IDH1 and TP53 mutation, were not associated with malignant progression. To identify new biomarker(s) contributing to malignant progression, we collected 252 samples with whole genome mRNA expression profile [34 normal brain tissue (NBT), 136 grade II astrocytoma (AII) and 82 grade III astrocytoma (AIII)]. Bioinformatics analysis revealed that EMT-associated pathways were most significantly altered along with tumor grades progress with up-regulation of 17 genes. Up-regulation of these genes was further confirmed by RNA-sequencing in 128 samples. Survival analysis revealed that high expression of these genes indicates a poor survival outcome. We focused on TGFB1I1 (TGF-beta 1 induced transcript 1) whose expression correlation with WHO grades was further validated by qPCR in 6 cell lines of different grades and 49 independent samples (36 AIIs and 13 AIIIs). High expression of TGFB1I1 was found associated with subtype transition and EMT pathways activation. The conclusion was confirmed using immunohistochemistry in tissue microarrays. Studies in vitro and in vivo using TGF-beta 1 and TGFB1I1 shRNA demonstrated that TGFB1I1 is required for TGF-beta stimulated EMT that contributes to malignant progression of astrocytomas.

引用

页码：12593 / 12606

页数：14

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