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- W2000192395 abstract "Selectively inducing apoptosis of activated T cells is essential for the clearance of pathogenic injurious cells and subsequent efficient resolution of inflammation. However, few chemicals have been reported to trigger apoptosis of activated T cells in the treatment of hepatitis without affecting quiescent T cells. In the present study, we found that fraxinellone, a small natural compound isolated from the root bark of Dictamnus dasycarpus, selectively facilitated apoptosis of concanavalin A (Con A)-activated CD4+ T cells rather than those non-activated, by disrupting the mitochondrial transmembrane potential, decreasing the ratio of Bcl-2/Bax, and increasing cytochrome c release from the mitochondria to the cytosol. The enhancement in Fas expression and caspase-8 activity, truncation of Bid, and down-regulation of anti-apoptotic cellular FLICE-inhibitory protein expression by fraxinellone also suggested the participation of an extrinsic apoptosis pathway. Furthermore, fraxinellone significantly alleviated Con A-induced T-cell-dependent hepatitis in mice, which was closely associated with reduced serum transaminases, pro-inflammatory cytokines, and pathologic parameters. Consistent with the in vitro results, fraxinellone dramatically induced apoptosis of activated peripheral CD4+ T cells in vivo, consequently resulting in less CD4+ T-cell activation and infiltration to the liver. These results strongly suggest fraxinellone might be a potential leading compound useful in treating T-cell-mediated liver disorders in humans." @default.
- W2000192395 created "2016-06-24" @default.
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- W2000192395 date "2009-06-01" @default.
- W2000192395 modified "2023-10-12" @default.
- W2000192395 title "Selective triggering of apoptosis of concanavalin A-activated T cells by fraxinellone for the treatment of T-cell-dependent hepatitis in mice" @default.
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- W2000192395 doi "https://doi.org/10.1016/j.bcp.2009.03.002" @default.
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