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Use microbes to tackle food insecurity 利用微生物解决粮食不安全问题
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2025-01-10 DOI: 10.1038/s41564-024-01916-2
Global food insecurity is a growing crisis, but microbes could offer an effective tool for sustainable agriculture.
全球粮食不安全是一场日益严重的危机,但微生物可以为可持续农业提供有效的工具。
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引用次数: 0
Streptomyces secretes a siderophore that sensitizes competitor bacteria to phage infection 链霉菌分泌一种铁载体,使竞争细菌对噬菌体感染敏感
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2025-01-08 DOI: 10.1038/s41564-024-01910-8
Zhiyu Zang, Chengqian Zhang, Kyoung Jin Park, Daniel A. Schwartz, Ram Podicheti, Jay T. Lennon, Joseph P. Gerdt
To overtake competitors, microbes produce and secrete secondary metabolites that kill neighbouring cells and sequester nutrients. This metabolite-mediated competition probably evolved in complex microbial communities in the presence of viral pathogens. We therefore hypothesized that microbes secrete natural products that make competitors sensitive to phage infection. We used a binary-interaction screen and chemical characterization to identify a secondary metabolite (coelichelin) produced by Streptomyces sp. that sensitizes its soil competitor Bacillus subtilis to phage infection in vitro. The siderophore coelichelin sensitized B. subtilis to a panel of lytic phages (SPO1, SP10, SP50, Goe2) via iron sequestration, which prevented the activation of B. subtilis Spo0A, the master regulator of the stationary phase and sporulation. Metabolomics analysis revealed that other bacterial natural products may also provide phage-mediated competitive advantages to their producers. Overall, this work reveals that synergy between natural products and phages can shape the outcomes of competition between microbes. A secondary metabolite sensitizes competitor Bacillus subtilis to a wide panel of lytic phages by sequestering iron and preventing the activation of Spo0A.
为了超越竞争对手,微生物产生并分泌次生代谢物,杀死邻近的细胞并隔离营养物质。这种代谢物介导的竞争可能在病毒病原体存在的复杂微生物群落中进化而来。因此,我们假设微生物分泌天然产物,使竞争对手对噬菌体感染敏感。我们使用二元相互作用筛选和化学表征来鉴定链霉菌产生的次级代谢物(coelichelin),该代谢物在体外使其土壤竞争对手枯草芽孢杆菌对噬菌体感染敏感。铁载体coelichelin通过铁隔离使枯草芽孢杆菌对一组裂解噬菌体(SPO1, SP10, SP50, Goe2)敏化,从而阻止了枯草芽孢杆菌Spo0A的激活,而Spo0A是固定期和孢子形成的主要调节因子。代谢组学分析显示,其他细菌天然产物也可能为其生产者提供噬菌体介导的竞争优势。总的来说,这项工作揭示了天然产物和噬菌体之间的协同作用可以塑造微生物之间竞争的结果。
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引用次数: 0
A decade of advances in human gut microbiome-derived biotherapeutics 人类肠道微生物衍生生物疗法的十年进展
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2025-01-08 DOI: 10.1038/s41564-024-01896-3
Alena. L. Pribyl, Philip Hugenholtz, Matthew A. Cooper
Microbiome science has evolved rapidly in the past decade, with high-profile publications suggesting that the gut microbiome is a causal determinant of human health. This has led to the emergence of microbiome-focused biotechnology companies and pharmaceutical company investment in the research and development of gut-derived therapeutics. Despite the early promise of this field, the first generation of microbiome-derived therapeutics (faecal microbiota products) have only recently been approved for clinical use. Next-generation therapies based on readily culturable and as-yet-unculturable colonic bacterial species (with the latter estimated to comprise 63% of all detected species) have not yet progressed to pivotal phase 3 trials. This reflects the many challenges involved in developing a new class of drugs in an evolving field. Here we discuss the evolution of the live biotherapeutics field over the past decade, from the development of first-generation products to the emergence of rationally designed second- and third-generation live biotherapeutics. Finally, we present our outlook for the future of this field. This Perspective reflects on advances made in the field of human gut microbiome-derived biotherapeutics, from faecal microbiota products to rationally designed second- and third-generation live biotherapeutics, and discusses the future of this developing field.
微生物组科学在过去十年中发展迅速,高调的出版物表明肠道微生物组是人类健康的因果决定因素。这导致了以微生物组为重点的生物技术公司和制药公司的出现,投资于肠道来源疗法的研究和开发。尽管该领域前景光明,但第一代微生物组衍生疗法(粪便微生物群产品)直到最近才被批准用于临床应用。基于易于培养和尚未培养的结肠细菌物种(后者估计占所有检测到的物种的63%)的新一代疗法尚未进展到关键的3期试验。这反映了在一个不断发展的领域中开发一类新的药物所涉及的许多挑战。在这里,我们讨论了过去十年来活体生物治疗领域的演变,从第一代产品的开发到合理设计的第二代和第三代活体生物治疗药物的出现。最后,对该领域的发展前景进行了展望。
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引用次数: 0
Enterobactin inhibits microbiota-dependent activation of AhR to promote bacterial sepsis in mice 肠obactin抑制微生物依赖的AhR激活,促进小鼠细菌性败血症
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2025-01-08 DOI: 10.1038/s41564-024-01882-9
Robert C. Keskey, Jason Xiao, Sanjiv Hyoju, Adam Lam, Daniel Kim, Ashley M. Sidebottom, Alexander Zaborin, Anne Dijkstra, Rebecca Meltzer, Abhimanyu Thakur, Kui Zhang, Huanhuan Joyce Chen, Natalia V. Beloborodova, Alisa K. Pautova, Krysta Wolfe, Bhakti Patel, Renee Thewissen, Olga Zaborina, John C. Alverdy
Sepsis is a major cause of morbidity and mortality, but our understanding of the mechanisms underlying survival or susceptibility is limited. Here, as pathogens often subvert host defence mechanisms, we hypothesized that this might influence the outcome of sepsis. We used microbiota analysis, faecal microbiota transplantation, antibiotic treatment and caecal metabolite analysis to show that gut-microbiota-derived tryptophan metabolites including indoles increased host survival in a mouse model of Serratia marcescens sepsis. Infection in macrophage-specific aryl hydrocarbon receptor (AhR) knockout mice revealed that AhR activation induced transcriptional reprogramming in macrophages and increased bacterial clearance and host survival. However, culture supernatants from multiple bacterial pathogens inhibited AhR activation in vitro. We showed that the secreted siderophore, enterobactin, inhibited AhR activation in vitro and increased sepsis mortality in vivo. By contrast, oral or systemic tryptophan supplementation increased survival. These findings show that sepsis survival depends upon the interplay between pathogen inhibition and the activation of AhR by a microbiota-derived metabolite. Bacterial pathogens produce enterobactin, which suppresses microbiota-derived indole activation of Ahr in macrophages to inhibit bacterial clearance and increase the severity of bacterial sepsis.
脓毒症是发病率和死亡率的主要原因,但我们对其生存或易感性的机制了解有限。在这里,由于病原体经常破坏宿主的防御机制,我们假设这可能会影响败血症的结果。我们使用微生物群分析、粪便微生物群移植、抗生素治疗和盲肠代谢物分析表明,肠道微生物来源的色氨酸代谢物包括吲哚可提高粘质沙雷氏菌脓毒症小鼠模型的宿主存活率。巨噬细胞特异性芳烃受体(AhR)敲除小鼠感染后发现,AhR激活诱导巨噬细胞转录重编程,增加细菌清除率和宿主存活率。然而,来自多种细菌病原体的培养上清液在体外抑制AhR的激活。我们发现分泌的铁载体肠杆菌蛋白在体外抑制AhR的激活,并在体内增加败血症死亡率。相比之下,口服或全身补充色氨酸可提高生存率。这些发现表明,脓毒症的存活取决于病原体抑制和微生物衍生代谢物激活AhR之间的相互作用。
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引用次数: 0
Dietary exclusion of major food groups shapes the gut microbiome and may influence health 排除主要食物群的饮食会塑造肠道微生物群,并可能影响健康
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2025-01-07 DOI: 10.1038/s41564-024-01875-8
Characterization of gut metagenomes from 21,561 volunteers on omnivore, vegetarian or vegan diets shows how major food groups may shape the gut microbiome not only through the selection of microbes that aid in digestion, but also through the acquisition of microbes from foods themselves.
对21561名杂食、素食或纯素食志愿者的肠道宏基因组特征分析表明,主要的食物群不仅可以通过选择有助于消化的微生物,还可以通过从食物本身获取微生物来塑造肠道微生物群。
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引用次数: 0
Gut microbiome signatures of vegan, vegetarian and omnivore diets and associated health outcomes across 21,561 individuals 21561个人的纯素食、素食和杂食饮食的肠道微生物特征及其相关的健康结果
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2025-01-06 DOI: 10.1038/s41564-024-01870-z
Gloria Fackelmann, Paolo Manghi, Niccolò Carlino, Vitor Heidrich, Gianmarco Piccinno, Liviana Ricci, Elisa Piperni, Alberto Arrè, Elco Bakker, Alice C. Creedon, Lucy Francis, Joan Capdevila Pujol, Richard Davies, Jonathan Wolf, Kate M. Bermingham, Sarah E. Berry, Tim D. Spector, Francesco Asnicar, Nicola Segata
As plant-based diets gain traction, interest in their impacts on the gut microbiome is growing. However, little is known about diet-pattern-specific metagenomic profiles across populations. Here we considered 21,561 individuals spanning 5 independent, multinational, human cohorts to map how differences in diet pattern (omnivore, vegetarian and vegan) are reflected in gut microbiomes. Microbial profiles distinguished these common diet patterns well (mean AUC = 0.85). Red meat was a strong driver of omnivore microbiomes, with corresponding signature microbes (for example, Ruminococcus torques, Bilophila wadsworthia and Alistipes putredinis) negatively correlated with host cardiometabolic health. Conversely, vegan signature microbes were correlated with favourable cardiometabolic markers and were enriched in omnivores consuming more plant-based foods. Diet-specific gut microbes partially overlapped with food microbiomes, especially with dairy microbes, for example, Streptococcus thermophilus, and typical soil microbes in vegans. The signatures of common western diet patterns can support future nutritional interventions and epidemiology. Using 21,561 individuals, the authors present a cross-sectional study of how gut microbiome signatures are associated with dietary intake patterns and with host health outcomes.
随着植物性饮食越来越受欢迎,人们对其对肠道微生物群影响的兴趣也越来越大。然而,人们对人群中特定饮食模式的宏基因组图谱知之甚少。在这里,我们考虑了5个独立的、跨国的21,561个人,以绘制饮食模式(杂食者、素食者和纯素食者)的差异如何反映在肠道微生物群中。微生物谱很好地区分了这些常见的饮食模式(平均AUC = 0.85)。红肉是杂食微生物群的强大驱动力,相应的特征微生物(例如,Ruminococcus torques, Bilophila wadsworthia和Alistipes putredinis)与宿主的心脏代谢健康呈负相关。相反,素食主义者的特征微生物与有利的心脏代谢标志物相关,并且在食用更多植物性食物的杂食动物中富集。特定饮食的肠道微生物部分与食物微生物群重叠,特别是与乳制品微生物重叠,例如,嗜热链球菌和纯素食者的典型土壤微生物。共同的西方饮食模式的特征可以支持未来的营养干预和流行病学。
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引用次数: 0
Crucial stepping stones in freshwater microbiology 淡水微生物学的重要基石
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2025-01-06 DOI: 10.1038/s41564-024-01898-1
David A. Pearce, James E. Lawrence, Maria Luisa Avila Jimenez
Three different studies in this issue use metagenomics to study the bacterial and viral dynamics of freshwater microbiomes, highlighting the ecological and environmental drivers of these ecosystems.
本期的三个不同的研究使用宏基因组学研究了淡水微生物组的细菌和病毒动力学,突出了这些生态系统的生态和环境驱动因素。
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引用次数: 0
Zinc-dependent β-lactam resistance at a cost 锌依赖性β-内酰胺抗性的代价
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2025-01-06 DOI: 10.1038/s41564-024-01892-7
Jacob E. Choby, David S. Weiss
Chemical genomics reveals the fitness cost of bacterial metallo-β-lactamase in zinc-deplete environments, with implications for treatment options.
化学基因组学揭示了细菌金属-β-内酰胺酶在缺锌环境中的适应性成本,并对治疗方案产生影响。
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引用次数: 0
Oropouche virus and the urgent need for global surveillance Oropouche病毒和全球监测的迫切需要
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2025-01-06 DOI: 10.1038/s41564-024-01897-2
Marta Giovanetti
The Oropouche virus has long been overlooked, but following a recent global expansion the virologist Marta Giovanetti argues for a One Health strategy to address this emergent public health threat.
Oropouche病毒长期以来一直被忽视,但在最近的全球扩张之后,病毒学家Marta Giovanetti提出了一个“同一个健康”战略,以应对这一紧急的公共卫生威胁。
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引用次数: 0
Unravelling viral ecology and evolution over 20 years in a freshwater lake 解开淡水湖20多年来的病毒生态学和进化
IF 20.5 1区 生物学 Q1 MICROBIOLOGY Pub Date : 2025-01-03 DOI: 10.1038/s41564-024-01876-7
Zhichao Zhou, Patricia Q. Tran, Cody Martin, Robin R. Rohwer, Brett J. Baker, Katherine D. McMahon, Karthik Anantharaman
As freshwater lakes undergo rapid anthropogenic change, long-term studies reveal key microbial dynamics, evolutionary shifts and biogeochemical interactions, yet the vital role of viruses remains overlooked. Here, leveraging a 20 year time series from Lake Mendota, WI, USA, we characterized 1.3 million viral genomes across time, seasonality and environmental factors. Double-stranded DNA phages from the class Caudoviricetes dominated the community. We identified 574 auxiliary metabolic gene families representing over 140,000 auxiliary metabolic genes, including important genes such as psbA (photosynthesis), pmoC (methane oxidation) and katG (hydrogen peroxide decomposition), which were consistently present and active across decades and seasons. Positive associations and niche differentiation between virus–host pairs, including keystone Cyanobacteria, methanotrophs and Nanopelagicales, emerged during seasonal changes. Inorganic carbon and ammonium influenced viral abundances, underscoring viral roles in both ‘top-down’ and ‘bottom-up’ interactions. Evolutionary processes favoured fitness genes, reduced genomic heterogeneity and dominant sub-populations. This study transforms understanding of viral ecology and evolution in Earth’s microbiomes. A long-term metagenomic time series reveals how viruses impact diversity, ecological dynamics and evolution of freshwater microbiomes.
随着淡水湖经历快速的人为变化,长期研究揭示了关键的微生物动力学、进化变化和生物地球化学相互作用,但病毒的重要作用仍然被忽视。在这里,利用来自美国威斯康星州门多塔湖的20年时间序列,我们在时间、季节性和环境因素方面表征了130万个病毒基因组。Caudoviricetes类的双链DNA噬菌体在群落中占主导地位。我们鉴定出574个辅助代谢基因家族,代表了超过14万个辅助代谢基因,包括psbA(光合作用)、pmoC(甲烷氧化)和katG(过氧化氢分解)等重要基因,这些基因在几十年和季节中始终存在并活跃。病毒-宿主对(包括keystone Cyanobacteria、methanotrophs和Nanopelagicales)之间的正相关和生态位分化在季节变化中出现。无机碳和铵影响病毒丰度,强调病毒在“自上而下”和“自下而上”相互作用中的作用。进化过程有利于健康基因,减少基因组异质性和优势亚群。这项研究改变了人们对地球微生物群中病毒生态学和进化的理解。
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引用次数: 0
期刊
Nature Microbiology
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