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Down-regulation of matrix Gla protein messenger RNA in human colorectal adenocarcinomas.

Abstract：

:Matrix Gla protein (MGP) is a vitamin K-dependent extracellular matrix protein commonly found in a variety of tissues. In this study, we describe the potential use of MGP gene expression as the tumor marker of colorectal cancer. A decrease in expression of the MGP gene was also discovered in colorectal cancer using differential screening of cDNA libraries. The MGP expression in 80 human colorectal adenocarcinomas was quantified by a Northern blot analysis to better define the expression pattern of MGP in colorectal cancer. The expression of MGP mRNA was reduced in 63 of 80 (79%) colorectal adenocarcinomas (P<0.001) as compared to the mRNA in adjacent normal tissue, implying that a decrease in MGP expression is associated with colorectal cancer development. The proportion of tumors with downregulated expression of MGP was lower in Duke's A/B than Duke's C/D (34 of 47 versus 26 of 33, respectively) tumors and was lower in moderate differentiation than poor differentiation (44 of 64 versus 16 of 16, respectively). However, chi(2) analysis does not reveal any correlation between a loss of MGP expression and tumor progression or differentiation state. In conclusion, the downregulation of MGP mRNA generally occurs in colorectal adenocarcinomas. Although the role of MGP in cancer development is unknown, the reduced expression of MGP may be used to distinguish the normal colorectal cells from malignant cells.

journal_name

Cancer Lett

journal_title

Cancer letters

authors

Fan C,Sheu D,Fan H,Hsu K,Allen Chang C,Chan E

doi

10.1016/s0304-3835(01)00416-5

keywords:

subject

Has Abstract

pub_date

2001-04-10 00:00:00

pages

63-9

issue

1

eissn

0304-3835

issn

1872-7980

pii

S0304383501004165

journal_volume

165

pub_type

杂志文章

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