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- W1967029216 abstract "Abstract Maspin, a member of the serpin family, has been reported to suppress metastasis and angiogenesis in breast and prostate cancers. Overexpression of maspin was associated with adverse prognostic features in several other tumours. In this study, expression of maspin was analysed in 41 colorectal carcinomas with high‐frequency microsatellite instability (MSI‐H) and 159 microsatellite stable colorectal cancers (MSS/MSI‐L) by immunohistochemistry (IHC) and partly by relative quantitative real‐time RT‐PCR and western blot analyses. Significant upregulation of maspin expression was found in MSI‐H tumours compared to both MSS/MSI‐L tumours and matched benign colonic mucosa. Increased maspin expression was also found in three MSI‐H colon cancer cell lines, but not in three MSS colon cancer cell lines by RT‐PCR and western blot analyses. Regulation of maspin expression depended on promoter methylation as tissue specimens and cell lines expressing maspin showed unmethylated maspin promoters, whereas promoter hypermethylation was found in specimens with loss of maspin expression. Intense nuclear maspin immunostaining was seen specifically in MSI‐H tumours ( p = 0.013), de‐differentiated tumours ( p = 0.006), and at the invasion front. These findings provide new insights into the role of maspin in colorectal cancer progression and may be useful for diagnosis and treatment strategies. Copyright © 2005 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd." @default.
- W1967029216 created "2016-06-24" @default.
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- W1967029216 date "2005-02-15" @default.
- W1967029216 modified "2023-10-15" @default.
- W1967029216 title "Elevated nuclear maspin expression is associated with microsatellite instability and high tumour grade in colorectal cancer" @default.
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- W1967029216 doi "https://doi.org/10.1002/path.1732" @default.
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