SNX25 regulates proinflammatory cytokine expression via the NF-κB signal in macrophages.

SNX25 regulates proinflammatory cytokine expression via the NF-κB signal in macrophages.
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DOI:
10.1371/journal.pone.0247840
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发表时间:
2021
期刊:
影响因子:
3.7
通讯作者:
Wanaka A
Wanaka A
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Nishimura K;Tanaka T;Takemura S;Tatsumi K;Wanaka A

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先天免疫是抵御细菌感染的第一道防线,由巨噬细胞启动。分类连接蛋白25 (Sorting nexin 25, SNX25)是SNX家族成员,据报道通过增强TGF受体降解负调控TGF-β信号。然而,很少有研究关注SNX25与免疫系统之间的关系。我们敲低了SNX25在巨噬细胞中的表达,并检测了脂多糖刺激后炎性细胞因子的表达,这是先天免疫的一个标志。SNX25敲除增加RAW 264.7细胞的促炎细胞因子表达。此外,SNX25敲低可通过促进i -κB α泛素化激活NF-κB信号。提示SNX25可抑制NF-κB信号,从而调控巨噬细胞促炎因子的表达。
Innate immunity is the first line of defense against bacterial infection and is initiated by macrophages. Sorting nexin 25 (SNX25) is an SNX family member and is reported to negatively regulate TGF-β signaling by enhancing TGF receptor degradation. However, few studies have focused on the relationship between SNX25 and the immune system. We knocked down SNX25 expression in macrophages and examined inflammatory cytokine expression, a hallmark of innate immunity, after lipopolysaccharide stimulation. SNX25 knockdown increased proinflammatory cytokine expression in RAW 264.7 cells. In addition, SNX25 knockdown activated the NF-κB signal by promoting ubiquitination of IκBα. These results suggest that SNX25 inhibits the NF-κB signal and thereby regulates proinflammatory cytokine expression in macrophages.
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