An infection-induced RhoB-Beclin 1-Hsp90 complex enhances clearance of uropathogenic Escherichia coli.

An infection-induced RhoB-Beclin 1-Hsp90 complex enhances clearance of uropathogenic Escherichia coli.
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感染诱导的RhoB-Beclin 1-Hsp 90复合物增强尿路致病性大肠杆菌的清除

DOI:
10.1038/s41467-021-22726-8
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发表时间:
2021-05-10
影响因子:
16.6
通讯作者:
Wang Q
Wang Q
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Miao C;Yu M;Pei G;Ma Z;Zhang L;Yang J;Lv J;Zhang ZS;Keller ET;Yao Z;Wang Q

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宿主细胞使用几种抗菌途径来防御病原体。在这里,使用尿路致病性大肠杆菌(UPEC)感染模型,我们证明,细菌感染上调RhoB,随后促进细胞内细菌清除诱导LC 3脂质化和自噬体形成。RhoB通过其118至140处的残基和Beclin 1 CCD结构域与Beclin 1结合,其中RhoB Arg 133是关键结合残基。RhoB与Beclin 1的结合增强了Hsp 90-Beclin 1相互作用,防止Beclin 1降解。RhoB还直接与Hsp 90相互作用,维持RhoB水平。UPEC感染增加体内膀胱上皮中的RhoB、Beclin 1和LC 3水平,而Beclin 1和LC 3水平以及感染后RhoB+/−和RhoB−/−小鼠中的UPEC清除率显著降低。我们的结论是,当受到UPEC感染的刺激时,宿主细胞通过RhoB-Beclin 1-HSP 90复合物促进UPEC清除,这表明RhoB可能是开发UPEC治疗策略时的有用靶点。细菌入侵可导致多种宿主细胞应答。在这里,作者表明,在一个模型的尿路致病性E。在大肠杆菌中,RhoB被上调并诱导自噬体与Beclin 1和Hsp 90形成复合物,促进细菌清除。
Host cells use several anti-bacterial pathways to defend against pathogens. Here, using a uropathogenic Escherichia coli (UPEC) infection model, we demonstrate that bacterial infection upregulates RhoB, which subsequently promotes intracellular bacteria clearance by inducing LC3 lipidation and autophagosome formation. RhoB binds with Beclin 1 through its residues at 118 to 140 and the Beclin 1 CCD domain, with RhoB Arg133 being the key binding residue. Binding of RhoB to Beclin 1 enhances the Hsp90-Beclin 1 interaction, preventing Beclin 1 degradation. RhoB also directly interacts with Hsp90, maintaining RhoB levels. UPEC infections increase RhoB, Beclin 1 and LC3 levels in bladder epithelium in vivo, whereas Beclin 1 and LC3 levels as well as UPEC clearance are substantially reduced in RhoB+/− and RhoB−/− mice upon infection. We conclude that when stimulated by UPEC infections, host cells promote UPEC clearance through the RhoB-Beclin 1-HSP90 complex, indicating RhoB may be a useful target when developing UPEC treatment strategies. Bacterial invasion can lead to multiple host cell responses. Here, the authors show that in a model of uropathogenic E. coli, RhoB is upregulated and induces autophagosome formation in a complex with Beclin1 and Hsp90, promoting bacterial clearance.
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