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A virus hastens ageing in flies 一种病毒加速了苍蝇的衰老
IF 69.2 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-06-14 DOI: 10.1038/s41579-024-01070-w
Agustina Taglialegna
In this study, Niggs et al. show that Drosophila A virus infection modulates epithelial turnover in the intestine of Drosophila melanogaster, promoting premature intestinal dysplasia and reducing fly lifespan.
在这项研究中,Niggs 等人发现,果蝇 A 病毒感染会调节黑腹果蝇肠道上皮的更替,促进肠道过早发育不良,缩短果蝇的寿命。
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引用次数: 0
Supra-structures to target lipid II 针对脂质 II 的超结构。
IF 69.2 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-06-11 DOI: 10.1038/s41579-024-01066-6
Andrea Du Toit
This study reports that plectasin uses a supramolecular antimicrobial mode of action, whereby the oligomerized peptide sequesters lipid II.
本研究报告指出,plectasin 采用了一种超分子抗菌作用模式,通过这种模式,寡聚肽可以封存脂质 II。
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引用次数: 0
ESKAPE pathogens: antimicrobial resistance, epidemiology, clinical impact and therapeutics ESKAPE 病原体:抗菌药耐药性、流行病学、临床影响和疗法
IF 69.2 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-06-03 DOI: 10.1038/s41579-024-01054-w
William R. Miller, Cesar A. Arias
The rise of antibiotic resistance and a dwindling antimicrobial pipeline have been recognized as emerging threats to public health. The ESKAPE pathogens — Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa and Enterobacter spp. — were initially identified as critical multidrug-resistant bacteria for which effective therapies were rapidly needed. Now, entering the third decade of the twenty-first century, and despite the introduction of several new antibiotics and antibiotic adjuvants, such as novel β-lactamase inhibitors, these organisms continue to represent major therapeutic challenges. These bacteria share several key biological features, including adaptations for survival in the modern health-care setting, diverse methods for acquiring resistance determinants and the dissemination of successful high-risk clones around the world. With the advent of next-generation sequencing, novel tools to track and combat the spread of these organisms have rapidly evolved, as well as renewed interest in non-traditional antibiotic approaches. In this Review, we explore the current epidemiology and clinical impact of this important group of bacterial pathogens and discuss relevant mechanisms of resistance to recently introduced antibiotics that affect their use in clinical settings. Furthermore, we discuss emerging therapeutic strategies needed for effective patient care in the era of widespread antimicrobial resistance. In this Review, Miller and Arias summarize recent advances in understanding ESKAPE pathogens, focusing on their molecular epidemiology, clinical impact, emerging mechanisms of resistance and novel therapeutic approaches.
抗生素耐药性的增加和抗菌药物渠道的减少已被认为是对公共卫生的新威胁。ESKAPE 病原体--粪肠球菌、金黄色葡萄球菌、肺炎克雷伯氏菌、鲍曼不动杆菌、铜绿假单胞菌和肠杆菌--最初被认为是关键的多重耐药细菌,急需有效的治疗方法。如今,进入二十一世纪的第三个十年,尽管引入了多种新型抗生素和抗生素辅助剂,如新型β-内酰胺酶抑制剂,但这些细菌仍然是治疗方面的重大挑战。这些细菌有几个共同的主要生物学特征,包括在现代医疗环境中生存的适应性、获得抗药性决定因子的多种方法以及成功的高风险克隆在全球的传播。随着下一代测序技术的出现,追踪和抗击这些微生物传播的新型工具迅速发展,人们对非传统抗生素方法的兴趣也重新燃起。在本《综述》中,我们将探讨这组重要细菌病原体目前的流行病学和临床影响,并讨论影响其临床使用的最新抗生素耐药性的相关机制。此外,我们还讨论了在抗菌药耐药性广泛存在的时代,有效护理患者所需的新兴治疗策略。
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引用次数: 0
A spatially constrained independent component analysis jointly informed by structural and functional network connectivity. 由结构和功能网络连通性共同提供信息的空间约束独立成分分析。
1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-06-01 DOI: 10.1101/2023.08.13.553101
Mahshid Fouladivanda, Armin Iraji, Lei Wu, Theodorus G M van Erp, Aysenil Belger, Faris Hawamdeh, Godfrey D Pearlson, Vince D Calhoun

There are a growing number of neuroimaging studies motivating joint structural and functional brain connectivity. Brain connectivity of different modalities provides insight into brain functional organization by leveraging complementary information, especially for brain disorders such as schizophrenia. In this paper, we propose a multi-modal independent component analysis (ICA) model that utilizes information from both structural and functional brain connectivity guided by spatial maps to estimate intrinsic connectivity networks (ICNs). Structural connectivity is estimated through whole-brain tractography on diffusion-weighted MRI (dMRI), while functional connectivity is derived from resting-state functional MRI (rs-fMRI). The proposed structural-functional connectivity and spatially constrained ICA (sfCICA) model estimates ICNs at the subject level using a multi-objective optimization framework. We evaluated our model using synthetic and real datasets (including dMRI and rs-fMRI from 149 schizophrenia patients and 162 controls). Multi-modal ICNs revealed enhanced functional coupling between ICNs with higher structural connectivity, improved modularity, and network distinction, particularly in schizophrenia. Statistical analysis of group differences showed more significant differences in the proposed model compared to the unimodal model. In summary, the sfCICA model showed benefits from being jointly informed by structural and functional connectivity. These findings suggest advantages in simultaneously learning effectively and enhancing connectivity estimates using structural connectivity.

越来越多的神经影像学研究鼓励联合进行大脑结构和功能连接。通过利用互补信息,不同模态的大脑连通性可深入了解大脑功能组织,尤其是针对精神分裂症等脑部疾病。在本文中,我们提出了一种多模态独立成分分析(ICA)模型,该模型利用空间图引导下的大脑结构和功能连通性信息来估计内在连通性网络(ICN)。结构连通性通过扩散加权核磁共振成像(dMRI)的全脑束成像进行估算,而功能连通性则来自静息态功能核磁共振成像(rs-fMRI)。所提出的结构-功能连通性和空间约束 ICA(sfCICA)模型采用多目标优化框架在受试者水平上估计 ICN。我们使用合成数据集和真实数据集(包括来自 149 名精神分裂症患者和 162 名对照者的 dMRI 和 rs-fMRI)对我们的模型进行了评估。多模态 ICNs 显示,ICNs 之间的功能耦合增强,结构连通性提高,模块化和网络区分度改善,尤其是在精神分裂症患者中。对组间差异的统计分析显示,与单模态模型相比,拟议模型的组间差异更为显著。总之,sfCICA 模型显示了结构和功能连接性共同作用的优势。这些发现表明,利用结构连通性同时进行有效学习和增强连通性估计具有优势。
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引用次数: 0
Co‐evolution of early Earth environments and microbial life 早期地球环境与微生物生命的共同进化。
IF 69.2 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-05-29 DOI: 10.1038/s41579-024-01044-y
Timothy W. Lyons, Christopher J. Tino, Gregory P. Fournier, Rika E. Anderson, William D. Leavitt, Kurt O. Konhauser, Eva E. Stüeken
Two records of Earth history capture the evolution of life and its co-evolving ecosystems with interpretable fidelity: the geobiological and geochemical traces preserved in rocks and the evolutionary histories captured within genomes. The earliest vestiges of life are recognized mostly in isotopic fingerprints of specific microbial metabolisms, whereas fossils and organic biomarkers become important later. Molecular biology provides lineages that can be overlayed on geologic and geochemical records of evolving life. All these data lie within a framework of biospheric evolution that is primarily characterized by the transition from an oxygen-poor to an oxygen-rich world. In this Review, we explore the history of microbial life on Earth and the degree to which it shaped, and was shaped by, fundamental transitions in the chemical properties of the oceans, continents and atmosphere. We examine the diversity and evolution of early metabolic processes, their couplings with biogeochemical cycles and their links to the oxygenation of the early biosphere. We discuss the distinction between the beginnings of metabolisms and their subsequent proliferation and their capacity to shape surface environments on a planetary scale. The evolution of microbial life and its ecological impacts directly mirror the Earth’s chemical and physical evolution through cause-and-effect relationships. In this Review, Lyons, Tino and colleagues explore the evolution of microbial life on Earth and examine the diversity of early microbial metabolic pathways, their associations with biogeochemical cycles and how they shaped and responded to changing surface environments over billions of years.
有两种地球历史记录以可解释的保真度记录了生命的演化及其共同演化的生态系统:岩石中保存的地球生物学和地球化学痕迹以及基因组中记录的演化历史。最早的生命遗迹主要体现在特定微生物代谢的同位素指纹中,而化石和有机生物标志物在后来变得非常重要。分子生物学提供了可与生命进化的地质和地球化学记录相叠加的谱系。所有这些数据都在生物圈演化的框架内,而生物圈演化的主要特征是从缺氧世界过渡到富氧世界。在这篇综述中,我们将探讨地球上微生物生命的历史,以及它在多大程度上塑造了海洋、大陆和大气层化学特性的根本转变。我们研究了早期新陈代谢过程的多样性和演变、它们与生物地球化学循环的联系以及它们与早期生物圈含氧量的联系。我们将讨论新陈代谢的开始与随后的扩散之间的区别,以及它们在行星范围内塑造地表环境的能力。微生物生命的演变及其对生态的影响通过因果关系直接反映了地球的化学和物理演变。
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引用次数: 0
Foodborne bacterial pathogens: genome-based approaches for enduring and emerging threats in a complex and changing world 食源性细菌病原体:基于基因组的方法,应对复杂多变世界中的持久威胁和新出现的威胁。
IF 69.2 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-05-24 DOI: 10.1038/s41579-024-01051-z
Alison E. Mather, Matthew W. Gilmour, Stuart W. J. Reid, Nigel P. French
Foodborne illnesses pose a substantial health and economic burden, presenting challenges in prevention due to the diverse microbial hazards that can enter and spread within food systems. Various factors, including natural, political and commercial drivers, influence food production and distribution. The risks of foodborne illness will continue to evolve in step with these drivers and with changes to food systems. For example, climate impacts on water availability for agriculture, changes in food sustainability targets and evolving customer preferences can all have an impact on the ecology of foodborne pathogens and the agrifood niches that can carry microorganisms. Whole-genome and metagenome sequencing, combined with microbial surveillance schemes and insights from the food system, can provide authorities and businesses with transformative information to address risks and implement new food safety interventions across the food chain. In this Review, we describe how genome-based approaches have advanced our understanding of the evolution and spread of enduring bacterial foodborne hazards as well as their role in identifying emerging foodborne hazards. Furthermore, foodborne hazards exist in complex microbial communities across the entire food chain, and consideration of these co-existing organisms is essential to understanding the entire ecology supporting pathogen persistence and transmission in an evolving food system. In this Review, Mather et al. discuss the role of genome-based approaches in deepening our understanding of both enduring and emerging bacterial foodborne pathogens in the context of evolving global food systems and environmental changes.
食源性疾病对健康和经济造成了巨大负担,由于微生物危害多种多样,它们可能进入食品系统并在其中传播,这给预防工作带来了挑战。包括自然、政治和商业因素在内的各种因素影响着食品的生产和销售。食源性疾病的风险将随着这些驱动因素和食品系统的变化而不断演变。例如,气候对农业用水的影响、食品可持续发展目标的变化以及顾客偏好的变化都会对食源性病原体的生态学和可携带微生物的农业食品壁龛产生影响。全基因组和元基因组测序与微生物监测计划和对食品系统的深入了解相结合,可为当局和企业提供变革性信息,以应对风险并在整个食物链中实施新的食品安全干预措施。在本《综述》中,我们将介绍基于基因组的方法如何促进我们对持久性细菌食源性危害的演化和传播的了解,以及它们在识别新出现的食源性危害方面的作用。此外,食源性危害存在于整个食物链中复杂的微生物群落中,考虑这些共存的生物对于了解支持病原体在不断演变的食物系统中持续存在和传播的整个生态学至关重要。
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引用次数: 0
The gut–airway microbiome axis in health and respiratory diseases 健康和呼吸道疾病中的肠道-气道微生物群轴。
IF 69.2 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-05-22 DOI: 10.1038/s41579-024-01048-8
Mustafa Özçam, Susan V. Lynch
Communication between the gut and remote organs, such as the brain or the cardiovascular system, has been well established and recent studies provide evidence for a potential bidirectional gut–airway axis. Observations from animal and human studies indicate that respiratory insults influence the activity of the gut microbiome and that microbial ligands and metabolic products generated by the gut microbiome shape respiratory immunity. Information exchange between these two large mucosal surface areas regulates microorganism–immune interactions, with significant implications for the clinical and treatment outcomes of a range of respiratory conditions, including asthma, chronic obstructive pulmonary disease and lung cancer. In this Review, we summarize the most recent data in this field, offering insights into mechanisms of gut–airway crosstalk across spatial and temporal gradients and their relevance for respiratory health. In this Review, Özçam and Lynch examine recent findings reporting the interaction between the gut and the airway microbiomes and explore the role of gut–airway crosstalk in human health and respiratory diseases.
肠道与大脑或心血管系统等远端器官之间的交流已得到充分证实,最近的研究提供了潜在的双向肠道-呼吸道轴的证据。动物和人体研究的观察结果表明,呼吸道损伤会影响肠道微生物组的活动,而肠道微生物组产生的微生物配体和代谢产物会影响呼吸道免疫力。这两大粘膜表面区域之间的信息交流调节着微生物与免疫的相互作用,对包括哮喘、慢性阻塞性肺病和肺癌在内的一系列呼吸系统疾病的临床和治疗效果具有重要影响。在这篇综述中,我们总结了这一领域的最新数据,深入探讨了肠道-气道跨时空梯度串扰的机制及其与呼吸系统健康的相关性。
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引用次数: 0
Defending against plasmids 抵御质粒
IF 88.1 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-05-21 DOI: 10.1038/s41579-024-01063-9
Andrea Du Toit
This study reports the mechanism of plasmid clearance by the DNA defence module DdmDE of the Vibrio cholerae seventh pandemic strain.
本研究报告了霍乱弧菌第七流行株 DNA 防御模块 DdmDE 清除质粒的机制。
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引用次数: 0
Discovering molecular paradigms of microbial carcinogenesis 发现微生物致癌的分子范式
IF 88.1 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-05-20 DOI: 10.1038/s41579-024-01060-y
Carrie L. Shaffer
In this Journal Club, Carrie Shaffer discusses a study revealing that infection with CagA-positive Helicobacter pylori strains is associated with an increased risk of developing stomach adenocarcinoma.
在本期期刊俱乐部中,Carrie Shaffer 讨论了一项研究,该研究揭示了感染 CagA 阳性幽门螺杆菌菌株与胃腺癌发病风险增加有关。
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引用次数: 0
Breaking through the concept barrier to develop broad-spectrum antiviral counter-measures 突破概念障碍,开发广谱抗病毒措施
IF 69.2 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2024-05-20 DOI: 10.1038/s41579-024-01059-5
Yi Shi
In this Journal Club, Yi Shi discusses a paper reporting that influenza virus infection in humans induces broadly cross-reactive and protective antibodies against the viral neuraminidase.
在本期 "期刊俱乐部 "中,Yi Shi 讨论了一篇报告人类感染流感病毒后会诱导针对病毒神经氨酸酶的广泛交叉反应性和保护性抗体的论文。
{"title":"Breaking through the concept barrier to develop broad-spectrum antiviral counter-measures","authors":"Yi Shi","doi":"10.1038/s41579-024-01059-5","DOIUrl":"10.1038/s41579-024-01059-5","url":null,"abstract":"In this Journal Club, Yi Shi discusses a paper reporting that influenza virus infection in humans induces broadly cross-reactive and protective antibodies against the viral neuraminidase.","PeriodicalId":18838,"journal":{"name":"Nature Reviews Microbiology","volume":"22 8","pages":"457-457"},"PeriodicalIF":69.2,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141069445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Nature Reviews Microbiology
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