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Upregulation and secretion of macrophage inhibitory cytokine-1 (MIC-1) in gastric cancers

Authors
Baek, Kyoung EunYoon, Suk RanKim, Jong-TaeKim, Kwang SooKang, Seong HoYang, YoungLim, Jong-SeokChoi, InpyoNam, Myoung SooYoon, MichungLee, Hee Gu
Issue Date
Mar-2009
Publisher
ELSEVIER SCIENCE BV
Keywords
MIC-1; Macrophage-inhibitory cytokine-1; GDF-15; Growth differentiation factor-15; Gastric cancer
Citation
CLINICA CHIMICA ACTA, v.401, no.1-2, pp.128 - 133
Journal Title
CLINICA CHIMICA ACTA
Volume
401
Number
1-2
Start Page
128
End Page
133
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/13812
DOI
10.1016/j.cca.2008.12.008
ISSN
0009-8981
Abstract
Background: Macrophage inhibitory cytokine-1 (MIC-1), a distant member of the transforming growth factor (TGF)-beta superfamily, has been reported to be upregulated and secreted from several cancers. We examined MIC-1 expression and secretion in gastric cancers. Methods: MIC-I mRNA and protein levels in cancer tissues and cell lines were analyzed by RT-PCR and Western blot. MIC-1 expression in cancer tissues and its secretion in serum were analyzed using immunohistochemistry and ELISA. Results: MIC-I was significantly upregulated in gastric cancer tissues and cell lines. MIC-1 was secreted from gastric SNU620 cells and its levels in the serum of cancer patients were 10-fold higher than those of healthy controls. In addition, the staining of MIC-I expression was strongly increased in metastatic gastric cancers. Conclusions: MIC-I was obviously overexpressed in gastric cancers and MICA secretion into blood may be useful for the prediction of gastric cancer progression. Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.
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