c-FLIP protects T lymphocytes from apoptosis in the intrinsic pathway.
c-FLIP protects T lymphocytes from apoptosis in the intrinsic pathway.
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DOI:
10.4049/jimmunol.1400469
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发表时间:
2015-04-01
期刊:
影响因子:
--
通讯作者:
He YW
中科院分区:
文献类型:
--
作者:
He MX;He YW
Apoptosis can be induced by either death receptors on the plasma membrane (extrinsic pathway), or the damage of the genome and/or cellular organelles (intrinsic pathway). Previous studies suggest that cellular caspase 8 (FLICE)-like inhibitory protein (c-FLIP) promotes cell survival in death receptor induced apoptosis pathway in T lymphocytes. Independent of death receptor signaling, mitochondria sense apoptotic stimuli and mediate the activation of effector caspases. Whether c-FLIP regulates mitochondrion-dependent apoptotic signals remains unknown. Here, c-FLIP gene was deleted in mature T lymphocytes in vitro, and the role of c-FLIP protein in intrinsic apoptosis pathway was studied. In resting T cells treated with the intrinsic apoptosis inducer, c-FLIP suppressed cytochrome c release from mitochondria. Bim-deletion rescued the enhanced apoptosis in c-FLIP-deficient T cells, while inhibition of caspase 8 did not. Different from activated T cells, there was no necroptosis or increase in reactive oxygen species (ROS) in c-FLIP-deficient resting T cells. These data suggest that c-FLIP is a negative regulator of intrinsic apoptosis pathway in T lymphocytes.
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DOI:
10.1084/jem.20061303
发表时间:
2007-01-22
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Pua HH;Dzhagalov I;Chuck M;Mizushima N;He YW
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He YW
DOI:
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