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Paeniclostridium sordellii hemorrhagic toxin targets TMPRSS2 to induce colonic epithelial lesions

Nat Commun. 2022-07; 
Xingxing Li , Liuqing He , Jianhua Luo , Yangling Zheng , Yao Zhou , Danyang Li , Yuanyuan Zhang , Zhenrui Pan , Yanyan Li , Liang Tao
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Gene Synthesis The following antibodies and reagents were purchased from the commercial vendors: mouse monoclonal antibody against non-glucosylated RAC1 (Clone 102, #610650, BD Biosciences, 1:1000), total RAC1 (Clone 23A8, MA1- 20580, Invitrogen, 1:1000), and Flag-tag (Clone 5A8E5, A01809, GenScript, 1:200). The TcsH gene was codon-optimized and synthesized by a commercial vendor (Genscript, Nanjing, China). Get A Quote
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摘要

Hemorrhagic toxin (TcsH) is an important exotoxin produced by Paeniclostridium sordellii, but the exact role of TcsH in the pathogenesis remains unclear, partly due to the lack of knowledge of host receptor(s). Here, we carried out two genome-wide CRISPR/Cas9 screens parallelly with TcsH and identified cell surface fucosylation and TMPRSS2 as host factors contributing to the binding and entry of TcsH. Genetic deletion of either fucosylation biosynthesis enzymes or TMPRSS2 in the cells confers resistance to TcsH intoxication. Interestingly, TMPRSS2 and fucosylated glycans can mediate the binding/entry of TcsH independently, thus serving as redundant receptors. Both TMPRSS2 and fucosylation recognize TcsH through... More

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