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Ai zheng = Aizheng = Chinese journal of cancer

[Correlation of MUC1 expression to adhesion of breast cancer cell line MDA-MB-231].


PMID 15522176

Abstract

Recent researches found that an abundant production of mucin protein well correlates with tumor cell metastasis. This study was to investigate inhibitory effect of benzyl-alpha-GalNAc on production of mucin 1 (MUC1), and on adhesion and invasion of breast cancer cell line MDA-MB-231. MDA-MB-231 cells were incubated with benzyl-alpha-GalNAc, expression of MUC1 was detected by immunohistochemistry, adhesive ability of MDA-MB-231 cells to artificial basement membrane Matrigel was measured by MTT assay. Gelatin zymography was performed to detect the secretion changes of matrix metalloproteinase-2 (MMP-2) and MMP-9. Compared with control cells, the tumor cells deglycosylated by benzyl-alpha-GalNAc showed lower expression of MUC1 (P < 0.05), and less adhesion to the Matrigel (P< 0.01), the secretion of MMP-2 and MMP-9 suppressed (P< 0.05). The expression of MUC1 correlates to adhesion and invasion of MDA-MB-231 cells, benzyl-alpha-GalNAc may weaken adhesion and type IV collagenase-secreting activity of MDA-MB-231 cells by inhibiting MUC1.

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