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Neoplasma Vol.58, No.5, p.441-448, 2011 |
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Title: Downregulation of fibulin-3 gene by promoter methylation in colorectal cancer predicts adverse prognosis | ||
Author: J. D. TONG, N. L. JIAO, Y. X. WANG, Y. W. ZHANG, F. HAN | ||
Abstract: Fibulin-3 gene has been identified as an antagonist of angiogenesis. We investigated the protein expression and promoter methylation status of fibulin-3 gene in colorectal cancer (CRC) and analyzed its correlation with clinicopathological factors. The study population enrolled 85 paired CRC specimens and adjacent normal tissues, as well as 32 cases of colorectal adenoma. Genomic DNA was extracted from paraffin-embedded samples using manual microdissection. Methylation-specific polymerase chain reaction (MSP) was used to determine the promoter methylation status and fibulin-3 gene expression was detected by immunohistochemistry. The results showed that, downregulation or silence of fibulin-3 protein was found in 57.6% (49/85) of CRC tissues, which was significantly higher than that of adjacent normal tissues (28.2%, 24/85) and colorectal adenoma (34.4%, 11/32) (P |
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Keywords: fibulin-3; methylation; immunohistochemistry; CRC; prognosis | ||
Year: 2011, Volume: 58, Issue: 5 | Page From: 441, Page To: 448 | |
doi:10.4149/neo_2011_05_441 |
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