Li Yuping,1,7,* Linlin Guan,2 Isabelle Becher,3 Kira S. Makarova,4 Xueli Cao,2 Surabhi Hareendranath,1 Jingwen Guan,1 Frank Stein,3 Siqi Yang,2 Arne Boergel,3 Karine Lapouge,3 Kim Remans,3 David Agard,5 Mikhail Savitski,3 Athanasios Typas,3 Eugene V. Koonin,4 Yue Feng,2,* and Joseph Bondy-Denomy1,6,8,*
1 Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94403, USA
2 State Key Laboratory of Green Biomanufacturing, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
3 European Molecular Biology Laboratory (EMBL), Meyerhofstraße 1, 69117 Heidelberg, Germany
4 Computational Biology Branch, Division of Intramural Research, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894, USA
5 The Chan-Zuckerberg Institute for Advanced Biological Imaging and the Department of Biochemistry, University of California, San Francisco, San Francisco, CA 94143, USA
6 Quantitative Biosciences Institute, University of California, San Francisco, San Francisco, CA 94403, USA
7 Present address: Biozentrum, University of Basel, Basel 4056, Switzerland
8 Lead contact
*Correspondence: 该Email地址已收到反垃圾邮件插件保护。要显示它您需要在浏览器中启用JavaScript。 (L.Y.), 该Email地址已收到反垃圾邮件插件保护。要显示它您需要在浏览器中启用JavaScript。 (Y.F.), 该Email地址已收到反垃圾邮件插件保护。要显示它您需要在浏览器中启用JavaScript。 (J.B.-D.)
https://doi.org/10.1016/j.cell.2025.02.016
SUMMARY
Jumbo bacteriophages of the fKZ-like family assemble a lipid-based early phage infection (EPI) vesicle and a proteinaceous nucleus-like structure during infection. These structures protect the phage from nucleases and may create selective pressure for immunity mechanisms targeting this specific phage family. Here, we identify ‘‘jumbo phage killer’’ (Juk), a two-component immune system that terminates infection of fKZ-like phages, suppressing the expression of early phage genes and preventing phage DNA replication and phage nucleus assembly while saving the cell. JukA (formerly YaaW) rapidly senses the EPI vesicle by binding to an early-expressed phage protein, gp241, and then directly recruits JukB. The JukB effector structurally resembles a pore-forming toxin and destabilizes the EPI vesicle. Functional anti-fKZ JukA homologs are found across bacterial phyla, associated with diverse effectors. These findings reveal a widespread defense system that specifically targets early events executed by fKZ-like jumbo phages prior to phage nucleus assembly.
原创: 十六点五 中山二院糖尿病足中心
糖尿病足部的慢性溃疡是否存在感染,好像应该是没有多少疑问的,但在所谓的“神经性溃疡”的表面是否存在有临床意义的感染,一直有争议。
对于外周血管病变的介入治疗,较IWGDF指南较有关OFFLOADING的细节描述,有关介入治疗的部分实在是比较粗慥,目前糖尿病外周血管病变介入治疗的热点问题大部分都没有涉及
对于糖尿病外周血管病变的治疗,2019年版IWGDF指南讲的比较少,无论是内科治疗还是介入治疗,这版的指南都讲得比较少(其实之前版本的IWGDF指南有关血管病变方面的内容更少),而国内糖尿病足指南,提到有关糖尿病外周血管病变治疗,一般都会用比较大的篇幅谈到其内科治疗。
人们对于糖尿病外周血管病变越来越关注,一方面,它是糖尿病足形成的最重要的原因;另一方面,它也是糖尿病进展到一定程度的标志,严重的糖尿病外周血管病变,往往标志着糖尿病进展到晚期,心、肾、脑、眼底等重要脏器的血管也存在严重的问题,而糖尿病足长期的皮肤溃疡不愈合,其产生的大量炎症因子,也会加重这些血管病变,因此,如何评价(诊断)及治疗糖尿病外周血管病变,成为了糖尿病诊断和治疗的最重要的领域。
伤口世界平台生态圈,以“关爱人间所有伤口患者”为愿景,连接、整合和拓展线上和线下的管理慢性伤口的资源,倡导远程、就近和居家管理慢性伤口,解决伤口专家的碎片化时间的价值创造、诊疗经验的裂变复制、和患者的就近、居家和低成本管理慢性伤口的问题。
2019广东省医疗行业协会伤口管理分会年会
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