Cell death and cell lysis are separable events during pyroptosis.
Cell death and cell lysis are separable events during pyroptosis.
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DOI:
10.1038/cddiscovery.2017.70
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发表时间:
2017
影响因子:
7
通讯作者:
Price JV
中科院分区:
文献类型:
--
作者:
DiPeso L;Ji DX;Vance RE;Price JV
Although much insight has been gained into the mechanisms by which activation of the inflammasome can trigger pyroptosis in mammalian cells, the precise kinetics of the end stages of pyroptosis have not been well characterized. Using time-lapse fluorescent imaging to analyze the kinetics of pyroptosis in individual murine macrophages, we observed distinct stages of cell death and cell lysis. Our data demonstrate that cell membrane permeability resulting from gasdermin D pore formation is coincident with the cessation of cell movement, loss of mitochondrial activity, and cell swelling, events that can be uncoupled from cell lysis. We propose a model of pyroptosis in which cell death can occur independently of cell lysis. The uncoupling of cell death from cell lysis may allow for better control of cytosolic contents upon activation of the inflammasome.
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