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首页> 外文期刊>FEBS Open Bio >Proteasome inhibitors prevent cell death and prolong survival of mice challenged by Shiga toxin
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Proteasome inhibitors prevent cell death and prolong survival of mice challenged by Shiga toxin

机译:蛋白酶体抑制剂可预防受到志贺毒素攻击的小鼠的细胞死亡并延长其存活时间

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Shiga toxin (Stx) causes fatal systemic complications. Stx induces apoptosis, but the mechanism of which is unclear. We report that Stx induced rapid reduction of short-lived anti-apoptotic proteins followed by activation of caspase 9 and the progression of apoptosis. Proteasome inhibitors prevented the reduction of anti-apoptotic proteins, and inhibited caspase activation and apoptosis, suggesting that the reduction of anti-apoptotic proteins is a prerequisite for Stx-induced apoptosis. A clinically approved proteasome inhibitor, bortezomib, prolonged the survival of mice challenged by Stx. These results imply that proteasome inhibition may be a novel approach to prevent the fatal effects of Stx.
机译:志贺毒素(Stx)会导致致命的全身性并发症。 Stx诱导细胞凋亡,但其机制尚不清楚。我们报告说Stx诱导短命抗凋亡蛋白的快速减少,然后激活caspase 9和凋亡的进展。蛋白酶体抑制剂阻止了抗凋亡蛋白的减少,并抑制了胱天蛋白酶的活化和凋亡,这表明抗凋亡蛋白的减少是Stx诱导凋亡的先决条件。临床批准的蛋白酶体抑制剂硼替佐米可延长受Stx攻击的小鼠的存活期。这些结果暗示蛋白酶体抑制可能是防止Stx致命影响的一种新方法。

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