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.
转载 中诺医疗
“中国新发肝细胞癌（肝癌）占全球55%，中国肝癌居第四，死亡率占第三。”
在6月28日召开的2019中华肿瘤大会上，中国科学院院士、复旦大学附属中山医院院长樊嘉谈到了我国肝癌的现状。①
不仅仅是全球一半以上新发的肝癌在中国，肝癌的致死率也堪忧。
最近《柳叶刀》刊发中国疾病负担研究提到，从1990-2017年之间的中国主要死因中，肝癌一直在第5、6、7位波动，甚至呈上升趋势。②
原创：中诺医疗
世界癌症研究基金会与美国癌症研究所联合发布了第三版《癌症预防和生存报告》。1997年第一版、2007年第二版的《癌症预防和生存报告》曾被誉为是癌症预防科学的里程碑，同时也是癌症预防生活方式最权威和最全面的报告。第三版《癌症预防和生存报告》基于数百项研究的结果、5100万人的数据、350多万的癌症病例。
原创： 十六点五 中山二院糖尿病足中心
糖尿病足的感染是其发病的中心环节，因此，全身抗感染是必须的。问题是在糖尿病足病人用全身抗生素，到底是要达到什么目的？
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
扫一扫了解详情:
任何关于疾病的建议都不能替代执业医师的面对面诊断。所有门诊时间仅供参考，最终以医院当日公布为准。
网友、医生言论仅代表其个人观点，不代表本站同意其说法，请谨慎参阅，本站不承担由此引起的法律责任。
