Identification of aberrant microRNA expression pattern in pediatric gliomas by microarray

Diagnostic Pathology

Yifeng Yang⁴  Shengying Qin⁵  Jie Ma¹  Lin He²  Baojie Li⁵  Guoyin Feng⁵  Yun Liu³  Hong Zhang²  Zhou Zhang⁴  Liming Tao⁴  Yang Zhao¹  Yuyu Xiong⁵  Fatao Liu⁴ 

[1] Shanghai Jiaotong University, Xinhua Hospital, No. 1665 Kongjiang Road, Shanghai 200092, PR China;Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, PR China;Key Laboratory of Molecular Medicine, The Ministry of Education, Department of Biochemistry and Molecular Biology, Fudan University Shanghai Medical College, Shanghai 200032, PR China;Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 294 Taiyuan Road, Shanghai 200031, PR China;Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200030, PR China

关键词: Microarray;    Expression;    MicroRNA;    Pediatric brain tumor;    Pediatric gliomas;   

Others  :  804542
DOI  :  10.1186/1746-1596-8-158

 received in 2013-08-20, accepted in 2013-09-09,  发布年份 2013

【 摘 要 】

Background

Brain tumor remains the leading cause of disease-related death in children. Many studies have focused on the complex biological process involved in pediatric brain tumors but little is know about the possible role of microRNAs in the genesis of these tumors.

Methods

In this study, we used a microRNA microarray assay to study the expression pattern of microRNAs in pediatric gliomas and matched normal tissues.

Results

We found 40 differentially expressed microRNAs, among which miR-1321, miR-513b, miR-769-3p were found be related to cancer genesis for the first time. The expression of selected microRNAs were then confirmed by qRT-PCR. Furthermore, GO and pathway analysis showed that the target genes of the 40 differentially expressed microRNAs were significantly enriched in nervous system-related and tumor-related biological processes and signaling pathways. Additionally, an apoptosis-related network of microRNA–mRNA interaction, representing the critical microRNAs and their targets, was constructed based on microRNA status.

Conclusions

In the present study we identified the changed expression pattern of microRNAs in pediatric gliamas. Our study also provides a better understanding of pediatric brain tumor biology and may assist in the development of less toxic therapies and in the search for better markers for disease stratification.

Virtual slides

The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/1323049861105720 webcite

【 授权许可】

   
2013 Liu et al.; licensee BioMed Central Ltd.

【 图 表 】

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