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  • Title: Lysosomal hydrolases in macrophages exposed to swainsonine.
    Author: Greenaway VA, Jessup W, Dean RT, Dorling PR.
    Journal: Biochim Biophys Acta; 1983 Jul 14; 762(4):569-76. PubMed ID: 6223666.
    Abstract:
    Swainsonine reversibly inhibits macrophage lysosomal acid alpha-mannosidase in vitro. When supplied to cultured cells for periods of up to 24 h, swainsonine penetrates the cells and produces a dose- and time-dependent inhibition of cellular alpha-mannosidase. Exposure of macrophages to swainsonine for 24 h, followed by continued incubation in the absence of this agent, produces elevated cellular activity of alpha-mannosidase, relative to unexposed controls; prolonged incubation of macrophage cultures with swainsonine for 1-2 weeks results also in significant increases in cell protein, lactate dehydrogenase activity and in that of another lysosomal enzyme, beta-hexosaminidase.
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