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Bismuth-based drugs sensitize Pseudomonas aeruginosa to multiple antibiotics by disrupting iron homeostasis 铋类药物通过破坏铁稳态使铜绿假单胞菌对多种抗生素敏感
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-09-18 DOI: 10.1038/s41564-024-01807-6
Yushan Xia, Xueying Wei, Peng Gao, Chenyuan Wang, Anne de Jong, Jonathan Hon Kwan Chen, María José Rodríguez-Sánchez, Alba Rodríguez-Nogales, Patricia Diez-Echave, Julio Gálvez, Federico García, Weihui Wu, Richard Yi-Tsun Kao, Hongyan Li, Rubén Cebrián, Oscar P. Kuipers, Hongzhe Sun
Pseudomonas aeruginosa infections are difficult to treat due to rapid development of antibiotic drug resistance. The synergistic combination of already-in-use drugs is an alternative to developing new antibiotics to combat antibiotic-resistant bacteria. Here we demonstrate that bismuth-based drugs (bismuth subsalicylate, colloidal bismuth subcitrate) in combination with different classes of antibiotics (tetracyclines, macrolides, quinolones, rifamycins and so on) can eliminate multidrug-resistant P. aeruginosa and do not induce development of antibiotic resistance. Bismuth disrupts iron homeostasis by binding to P. aeruginosa siderophores. Inside cells, bismuth inhibits the electron transport chain, dissipates the proton motive force and impairs efflux pump activity by disrupting iron–sulfur cluster-containing enzymes, including respiration complexes. As a result, bismuth facilitates antibiotic accumulation inside bacteria, enhancing their efficacy. The combination therapy shows potent antibacterial efficacy and low toxicity in an ex vivo bacteraemia model and increases the survival rate of mice in in vivo mouse lung-infection models. Our findings highlight the potential of bismuth-based drugs to be repurposed to combat P. aeruginosa infections in combination with clinically used antibiotics. Bismuth-based drugs combined with antibiotics enhance efficacy against multidrug-resistant Pseudomonas aeruginosa by disrupting bacterial iron homeostasis and electron transport.
由于抗生素耐药性的快速发展,铜绿假单胞菌感染难以治疗。与开发新的抗生素相比,将已在使用的药物进行协同组合是对抗抗生素耐药性细菌的一种替代方法。在这里,我们证明了以铋为基础的药物(亚水杨酸铋、胶体亚柠檬酸铋)与不同种类的抗生素(四环素类、大环内酯类、喹诺酮类、利福霉素类等)联合使用,可以消灭耐多药的铜绿假单胞菌,并且不会诱发抗生素耐药性的产生。铋能与铜绿假单胞菌的嗜苷酸盐结合,从而破坏铁的平衡。在细胞内,铋通过破坏含铁硫簇的酶,包括呼吸复合物,抑制电子传递链,消散质子动力,并损害外排泵的活性。因此,铋有利于抗生素在细菌体内的蓄积,从而增强了抗生素的疗效。这种联合疗法在体外菌血症模型中显示出强大的抗菌效力和较低的毒性,在体内小鼠肺部感染模型中提高了小鼠的存活率。我们的研究结果凸显了铋类药物与临床常用抗生素联用,重新用于抗击铜绿假单胞菌感染的潜力。
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引用次数: 0
Taurolithocholic acid protects against viral haemorrhagic fever via inhibition of ferroptosis 牛磺胆硷酸通过抑制铁变态反应预防病毒性出血热
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-09-18 DOI: 10.1038/s41564-024-01801-y
Xiaojie Zheng, Yunfa Zhang, Lingyu Zhang, Tong Yang, Faxue Zhang, Xi Wang, Shu Jeffrey Zhu, Ning Cui, Hongdi Lv, Xiaoai Zhang, Hao Li, Wei Liu
Bile acids are microbial metabolites that can impact infection of enteric and hepatitis viruses, but their functions during systemic viral infection remain unclear. Here we show that elevated levels of the secondary bile acid taurolithocholic acid (TLCA) are associated with reduced fatality rates and suppressed viraemia in patients infected with severe fever with thrombocytopenia syndrome virus (SFTSV), an emerging tick-borne haemorrhagic fever virus. TLCA inhibits viral replication and mitigates host inflammation during SFTSV infection in vitro, and indirectly suppresses SFTSV-mediated induction of ferroptosis by upregulating fatty acid desaturase 2 via the TGR5–PI3K/AKT–SREBP2 axis. High iron and ferritin serum levels during early infection were correlated with decreased TLCA levels and fatal outcomes in SFTSV-infected patients, indicating potential biomarkers. Furthermore, treatment with either ferroptosis inhibitors or TLCA protected mice from lethal SFTSV infection. Our findings highlight the therapeutic potential of bile acids to treat haemorrhagic fever viral infection. A microbially derived bile acid, taurolithocholic acid, limits viral replication, host inflammation and ferroptosis during infection with severe fever with thrombocytopenia syndrome virus, an emerging tick-borne haemorrhagic fever virus.
胆汁酸是微生物代谢产物,可影响肠道病毒和肝炎病毒的感染,但其在全身病毒感染期间的功能仍不清楚。在这里,我们发现二级胆汁酸牛磺胆硷酸(TLCA)水平的升高与感染严重发热伴血小板减少综合征病毒(SFTSV)(一种新出现的蜱媒出血热病毒)的患者死亡率的降低和病毒血症的抑制有关。在体外感染 SFTSV 期间,TLCA 可抑制病毒复制和减轻宿主炎症,并通过 TGR5-PI3K/AKT-SREBP2 轴上调脂肪酸去饱和酶 2 间接抑制 SFTSV 介导的铁变态反应。在感染早期,血清中铁和铁蛋白水平过高与TLCA水平降低和SFTSV感染患者的死亡结果相关,这表明铁和铁蛋白是潜在的生物标志物。此外,使用铁蛋白抑制剂或TLCA治疗可保护小鼠免受致命的SFTSV感染。我们的研究结果凸显了胆汁酸治疗出血热病毒感染的潜力。
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引用次数: 0
The host–parasite–virus triad 宿主-寄生虫-病毒三位一体
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-09-18 DOI: 10.1038/s41564-024-01817-4
Elodie Ghedin, Megan R. Hockman
Sequencing data reveal highly diverse viromes associated with clinically important parasitic nematodes. Serological data suggest that this ongoing relationship could impact disease.
测序数据揭示了与临床上重要的寄生线虫相关的高度多样化的病毒体。血清学数据表明,这种持续的关系可能会对疾病产生影响。
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引用次数: 0
Protein interactions in human pathogens revealed through deep learning 通过深度学习揭示人类病原体中的蛋白质相互作用
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-09-18 DOI: 10.1038/s41564-024-01791-x
Ian R. Humphreys, Jing Zhang, Minkyung Baek, Yaxi Wang, Aditya Krishnakumar, Jimin Pei, Ivan Anishchenko, Catherine A. Tower, Blake A. Jackson, Thulasi Warrier, Deborah T. Hung, S. Brook Peterson, Joseph D. Mougous, Qian Cong, David Baker
Identification of bacterial protein–protein interactions and predicting the structures of these complexes could aid in the understanding of pathogenicity mechanisms and developing treatments for infectious diseases. Here we developed RoseTTAFold2-Lite, a rapid deep learning model that leverages residue–residue coevolution and protein structure prediction to systematically identify and structurally characterize protein–protein interactions at the proteome-wide scale. Using this pipeline, we searched through 78 million pairs of proteins across 19 human bacterial pathogens and identified 1,923 confidently predicted complexes involving essential genes and 256 involving virulence factors. Many of these complexes were not previously known; we experimentally tested 12 such predictions, and half of them were validated. The predicted interactions span core metabolic and virulence pathways ranging from post-transcriptional modification to acid neutralization to outer-membrane machinery and should contribute to our understanding of the biology of these important pathogens and the design of drugs to combat them. RoseTTAFold2-Lite uses residue–residue coevolution and protein structure prediction to identify and structurally characterize protein–protein interactions in bacterial pathogens.
鉴定细菌蛋白质-蛋白质相互作用并预测这些复合物的结构有助于了解致病机制和开发传染性疾病的治疗方法。在这里,我们开发了 RoseTTAFold2-Lite,它是一种快速深度学习模型,利用残基-残基协同进化和蛋白质结构预测,在整个蛋白质组范围内系统地鉴定蛋白质-蛋白质相互作用并从结构上描述其特征。利用这一管道,我们搜索了 19 种人类细菌病原体中的 7800 万对蛋白质,确定了 1923 个涉及重要基因的可信预测复合物和 256 个涉及毒力因子的复合物。其中许多复合体以前并不为人所知;我们对 12 个这样的预测进行了实验测试,其中一半得到了验证。预测的相互作用跨越了核心代谢和毒力途径,从转录后修饰到酸中和再到外膜机制,它们将有助于我们了解这些重要病原体的生物学特性,并设计出对抗它们的药物。
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引用次数: 0
Silencing the transcriptionally active HIV reservoir to improve treatment outcomes 抑制转录活跃的艾滋病毒库,改善治疗效果
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-09-17 DOI: 10.1038/s41564-024-01816-5
Julia Prigann, Rubens Tavora, Robert L. Furler O’Brien, Ursula Schulze-Gahmen, Daniela Boehm, Nadia R. Roan, Douglas F. Nixon, Lishomwa C. Ndhlovu, Susana Valente, Melanie Ott
Persistence of the transcriptionally active HIV reservoir has important implications for people living with HIV, including chronic immune activation and inflammation. Supplementing antiretroviral therapy with transcriptional inhibitors could overcome this by silencing the transcriptionally active HIV reservoir.
转录活跃的艾滋病毒库的持续存在对艾滋病毒感染者有重要影响,包括慢性免疫激活和炎症。用转录抑制剂辅助抗逆转录病毒疗法,可以抑制转录活跃的艾滋病病毒库,从而克服这一问题。
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引用次数: 0
Lessons from a data scientist during COVID-19 一位数据科学家在 COVID-19 期间的经验之谈
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-09-17 DOI: 10.1038/s41564-024-01815-6
Julie Chih-yu Chen
Julie Chih-yu Chen is the head of Data Sciences at the National Microbiology Laboratory, Public Health Agency of Canada, and an Assistant Professor at the University of Manitoba, Canada. She develops and applies statistical and machine learning techniques to diverse omics data related to infectious disease.
Julie Chih-yu Chen 是加拿大公共卫生署国家微生物实验室的数据科学负责人,也是加拿大马尼托巴大学的助理教授。她开发并将统计和机器学习技术应用于与传染病有关的各种 omics 数据。
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引用次数: 0
A ‘Wende’ for virology in Germany 德国病毒学的 "文德节
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-09-17 DOI: 10.1038/s41564-024-01814-7
Thomas C. Mettenleiter
Thomas Mettenleiter was president of the Friedrich-Loeffler-Institut for 27 years and retired in June 2023. Looking back, he reflects on events around and following the reunification of Germany that changed his career path.
托马斯-梅滕莱特曾担任弗里德里希-洛夫勒研究所所长27年,于2023年6月退休。回首往事,他回顾了德国统一前后改变他职业道路的事件。
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引用次数: 0
Sulfated glycosaminoglycans are host epithelial cell targets of the Candida albicans toxin candidalysin 硫酸化糖胺聚糖是白色念珠菌毒素念珠菌素的宿主上皮细胞靶标
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-09-16 DOI: 10.1038/s41564-024-01794-8
Jianfeng Lin, Jian Miao, Katherine G. Schaefer, Charles M. Russell, Robert J. Pyron, Fuming Zhang, Quynh T. Phan, Norma V. Solis, Hong Liu, Masato Tashiro, Jonathan S. Dordick, Robert J. Linhardt, Michael R. Yeaman, Gavin M. King, Francisco N. Barrera, Brian M. Peters, Scott G. Filler
Candidalysin, a cytolytic peptide produced by the fungal pathogen Candida albicans, is a key virulence factor. However, its host cell targets remain elusive. Here we performed a genome-wide loss-of-function CRISPR screen in the TR146 human oral epithelial cell line and identified that disruption of genes (XYLT2, B3GALT6 and B3GAT3) in glycosaminoglycan (GAG) biosynthesis conferred resistance to damage induced by candidalysin and live C. albicans. Surface plasmon resonance and atomic force and electron microscopy indicated that candidalysin binds to sulfated GAGs, facilitating its enrichment on the host cell surface. Adding exogenous sulfated GAGs or the analogue dextran sulfate protected cells against candidalysin-induced damage. Dextran sulfate also inhibited C. albicans invasion and fungal-induced epithelial cell cytokine production. In mice with vulvovaginal candidiasis, topical dextran sulfate administration reduced intravaginal tissue damage and inflammation. Collectively, sulfated GAGs are epithelial cell targets of candidalysin and can be used therapeutically to protect cells from candidalysin-induced damage. Sulfated glycosaminoglycans are host cell targets of candidalysin, a cytolytic toxin of the fungal pathogen Candida albicans.
念珠菌素是真菌病原体白色念珠菌产生的一种细胞溶解肽,是一种关键的毒力因子。然而,其宿主细胞靶标仍然难以捉摸。在这里,我们在 TR146 人类口腔上皮细胞系中进行了全基因组功能缺失 CRISPR 筛选,发现糖胺聚糖(GAG)生物合成中的基因(XYLT2、B3GALT6 和 B3GAT3)被破坏后,对念珠菌素和活白念珠菌诱导的损伤具有抵抗力。表面等离子共振以及原子力和电子显微镜表明,念珠菌素能与硫酸化的 GAG 结合,从而促进其在宿主细胞表面的富集。添加外源硫酸化凝胶体或硫酸葡聚糖类似物可保护细胞免受念珠菌素引起的损伤。葡聚糖硫酸盐还能抑制白念珠菌的侵袭和真菌诱导的上皮细胞细胞因子的产生。在患有外阴阴道念珠菌病的小鼠中,局部使用硫酸葡聚糖可减少阴道内组织损伤和炎症。总之,硫酸化的凝胶体是念珠菌素的上皮细胞靶标,可用于治疗,保护细胞免受念珠菌素诱导的损伤。
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引用次数: 0
Publisher Correction: Blockade of endothelin receptors mitigates SARS-CoV-2-induced osteoarthritis. 出版商更正:阻断内皮素受体可减轻SARS-CoV-2诱发的骨关节炎。
IF 28.3 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-09-16 DOI: 10.1038/s41564-024-01826-3
Man Ting Au,Junguo Ni,Kaiming Tang,Wei Wang,Lanlan Zhang,Hantang Wang,Fangyi Zhao,Zhan Li,Peng Luo,Lawrence Chun-Man Lau,Ping-Keung Chan,Cuiting Luo,Bo Zhou,Lin Zhu,Charlie Yuli Zhang,Tianshu Jiang,Marianne Lauwers,Jasper Fuk-Woo Chan,Shuofeng Yuan,Chunyi Wen
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引用次数: 0
Blockade of endothelin receptors mitigates SARS-CoV-2-induced osteoarthritis 阻断内皮素受体可减轻 SARS-CoV-2 引起的骨关节炎
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-09-11 DOI: 10.1038/s41564-024-01802-x
Man Ting Au, Junguo Ni, Kaiming Tang, Wei Wang, Lanlan Zhang, Hantang Wang, Fangyi Zhao, Zhan Li, Peng Luo, Lawrence Chun-Man Lau, Ping-Keung Chan, Cuiting Luo, Bo Zhou, Lin Zhu, Charlie Yuli Zhang, Tianshu Jiang, Marianne Lauwers, Jasper Fuk-Woo Chan, Shuofeng Yuan, Chunyi Wen
Joint pain and osteoarthritis can occur as coronavirus disease 2019 (COVID-19) sequelae after infection. However, little is known about the damage to articular cartilage. Here we illustrate knee joint damage after wild-type, Delta and Omicron variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in vivo. Rapid joint injury with cystic lesions at the osteochondral junction was observed in two patients with post-COVID osteoarthritis and recapitulated in a golden Syrian hamster model. SARS-CoV-2-activated endothelin-1 signalling increased vascular permeability and caused viral spike proteins leakage into the subchondral bone. Osteoclast activation, chondrocyte dropout and cyst formation were confirmed histologically. The US Food and Drug Administration-approved endothelin receptor antagonist, macitentan, mitigated cystic lesions and preserved chondrocyte number in the acute phase of viral infection in hamsters. Delayed macitentan treatment at post-acute infection phase alleviated chondrocyte senescence and restored subchondral bone loss. It is worth noting that it could also attenuate viral spike-induced joint pain. Our work suggests endothelin receptor blockade as a novel therapeutic strategy for post-COVID arthritis. Endothelin-1 activation after SARS-CoV-2 infection leads to vascular permeability, chondrocyte senescence, osteoclast activation and cyst formation in affected joints of hamsters, which can be alleviated using macitentan. Joint injury was also seen in two patients after COVID-19 infection.
感染2019年冠状病毒病(COVID-19)后,会出现关节疼痛和骨关节炎。然而,人们对关节软骨的损伤知之甚少。在此,我们展示了体内感染严重急性呼吸系统综合征冠状病毒2(SARS-CoV-2)野生型、Delta和Omicron变种后膝关节的损伤情况。在两名COVID后骨关节炎患者身上观察到了关节快速损伤,骨软骨交界处出现囊性病变,并在金色叙利亚仓鼠模型中得到了再现。SARS-CoV-2 激活的内皮素-1 信号增加了血管通透性,并导致病毒尖峰蛋白渗漏到软骨下骨中。组织学证实了破骨细胞活化、软骨细胞脱落和囊肿形成。美国食品和药物管理局批准的内皮素受体拮抗剂马西替坦可减轻囊肿病变,并在仓鼠病毒感染的急性期保留软骨细胞数量。在急性感染后阶段延迟使用马西替坦可减轻软骨细胞衰老,恢复软骨下骨丢失。值得注意的是,它还能减轻病毒尖峰诱发的关节疼痛。我们的研究表明,内皮素受体阻断是治疗后COVID关节炎的一种新型治疗策略。
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引用次数: 0
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Nature Microbiology
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