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“The mechanism may be that SAM can reverse the hypomethylation of c-myc and uPA genes , reduce their expression, and then inhibit tumor growth.”
“The protein and mRNA expressions of c-myc and uPA were remarkably reduced (all P < 0.01), and the hypomethylation of c-myc and uPA genes were reversed after SAM treatment.”
“Immunohistochemical analysis of tumors showed the ability of SAM and MBD2-AS to significantly decrease tumoral uPA and MMP-2 expression along with levels of angiogenesis and survival pathway signaling molecules.”
“Treatment of MDA-231 cells with AdoMet , but not its unmethylated analogue S-adenosylhomocysteine, significantly inhibits uPA expression and tumor cell invasion in vitro and tumor growth and metastasis in vivo.”
“Furthermore, treatment with demethylation inhibitor S-adenosylmethionine or stable expression of uPA short hairpin RNA significantly inhibits uPA expression and tumor cell invasion in vitro and tumor growth and incidence of lung metastasis in vivo.”