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HnRNP E2 is downregulated in human oral cancer cells and the overexpression of hnRNP E2 induces apoptosis

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Title HnRNP E2 is downregulated in human oral cancer cells and the overexpression of hnRNP E2 induces apoptosis
 
Creator Roychoudhury, P
Paul, RR
Chowdhury, R
Chaudhuri, K
 
Subject Biochemistry & Molecular Biology; Oncology
 
Description Human hnRNP genes have been reported to be involved in human malignancies and several hnRNPs are promising biomarkers of lung, head and neck, colon, breast, and pancreatic cancers. The present study investigated the clinicopathologic and biological significance of hnRNP E2 gene expression in oral cancer. Human hnRNP E2 was significantly downregulated in oral cancer tissues compared to normal one (P < 0.0001) as determined by quantitative real-time reverse transcription PCR. The expression of hnRNP E2 is correlated with histology, being lower in moderate and poorly differentiated squamous cell carcinoma (SCC) compared to well-differentiated SCC. Transient transfection of hnRNP E2 in cancerous cell lines resulted in reduced cell viability and increased apoptotic nuclei. Compared to control transfectants, cells with higher expression showed an increase in the number of apoptotic cells by annexin-PI staining and an increase in caspase activity. The present study thus implicates downregulation of hnRNP E2 as a novel mechanism to enhance the resistance of cancer cells to apoptosis. (c) 2007 Wiley-Liss, Inc.
 
Publisher WILEY-LISSHOBOKENDIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA
 
Date 2011-09-20T12:12:39Z
2011-09-20T12:12:39Z
2007
 
Type Article
 
Identifier MOLECULAR CARCINOGENESIS
0899-1987
http://hdl.handle.net/123456789/14365
 
Language English