The action of the adenosylhomocysteine hydrolase inhibitor, 3-deazaadenosine,on phagocytic function of mouse macrophages and human monocytes |
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Authors: | Edward J Leonard Alison Skeel Peter K Chiang Giulio L Cantoni |
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Institution: | Immunopathology Section, Laboratory of Immunobiology, National Cancer Institute National Institutes of Health, Bethesda, Maryland 20014 USA;Laboratory of General and Comparative Biochemistry, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland 20014 USA |
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Abstract: | An inhibitor of adenosylhomocysteine hydrolase, 3-deazaadenosine, caused profound inhibition of phagocytosis of opsonized erythrocytes by mouse resident peritoneal macrophages . The inhibition was evident at concentrations as low as 2×10?7M, and increased with increasing concentration and time of exposure to the analogue. It was not associated with detachment of the macrophage monolayers or with loss of cell viability. Although the inhibition was not reversible, progression of the functional impairment was interrupted by washing out the analogue. In striking contrast, phagocytic function of human blood monocytes was unaffected by 3-deazaadenosine. |
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Keywords: | AdoHcy adenosylhomocysteine 3-deaza-AdoHcy 3-deazaadenosylhomocysteine EHNA 9-erythro-(2-hydroxyl-3-nonyl)adenine hydrochloride MSP macrophage stimulating protein |
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