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Title: Recombinant Multivalent EMMPRIN Extracellular Domain Induces U937 Human Leukemia Cell Apoptosis by Downregulation of Monocarboxylate Transporter 1 and Activation of Procaspase-9
Authors: Nutjeera Intasai
Supansa Pata
Khajornsak Tragoolpua
Chatchai Tayapiwatana
Keywords: Biochemistry, Genetics and Molecular Biology
Chemical Engineering
Immunology and Microbiology
Issue Date: 27-Jul-2015
Abstract: © 2015, Springer Science+Business Media New York. This study was carried out to understand the effect of the recombinant multivalent extracellular matrix metalloproteinase inducer (EMMPRIN) extracellular domain, designated as rmEMMPRINex, on the apoptotic cell death of human leukemia U937 cells. Expression of monocarboxylate transporter 1 (MCT1) and caspase-9 in U937 treated with rmEMMPRINex was investigated in this study. Levels of membrane MCT1 and intracellular procaspase-9 were decreased in rmEMMPRINex-treated cells in comparison to controls. However, the expression of activated caspase-9 was undetectable. rmEMMPRINex also induced DNA fragmentation and apoptosis in U937 cells. Taken together, we concluded that interaction of rmEMMPRINex with U937 cells leads to inhibition of MCT1 membrane expression, intracellular activation of procaspase-9, followed by DNA fragmentation and apoptosis. This may contribute to the conceptual development of novel cancer drugs in the future.
ISSN: 15590291
Appears in Collections:CMUL: Journal Articles

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