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Freezing forgetting in C. elegans to extend memory retention. 秀丽隐杆线虫冻结遗忘以延长记忆保留。
IF 25 1区 医学 Q1 NEUROSCIENCES Pub Date : 2025-12-19 DOI: 10.1038/s41593-025-02145-4
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引用次数: 0
Behavioral adaptation to warm conditions via Lim1-mediated acceleration of neuronal clocks. 通过lim1介导的神经元时钟加速对温暖条件的行为适应。
IF 25 1区 医学 Q1 NEUROSCIENCES Pub Date : 2025-12-19 DOI: 10.1038/s41593-025-02139-2
Zhihua Liu,Dapeng Xie,Stephen X Zhang,Wenji Cai,Hao Zhou,Dragana Rogulja
Temperature compensation stabilizes the speed of circadian clocks. Uncompensated molecular clock cycles would accelerate severalfold with each 10 °C increase, precluding reliable timekeeping. Despite such thermal buffering, some clock-controlled behavioral cycles complete by up to two hours earlier or later depending on environmental temperatures. We show that temperature-dependent changes in the speed of behavioral cycles can be explained by changes in the speed of the clock itself. Although the speed of all clocks is insensitive to thermal energy, we found that in neurons the clock speed is regulated by temperature information. When the threshold of ~26 °C is exceeded for ~24 h, a pathway mediated by the LIM-homeodomain transcription factor Lim1 instructs the clocks in the Drosophila brain to accelerate. Clock acceleration enables earlier morning awakening. This work suggests that modestly altering the clock speed enables behavioral thermoadaptation, via regulated steps that do not compromise the reliability of circadian timekeeping.
温度补偿稳定了生物钟的速度。每增加10°C,未补偿的分子时钟周期将加速数倍,从而妨碍可靠的计时。尽管有这样的热缓冲,一些生物钟控制的行为周期还是会根据环境温度提前或推迟两个小时完成。我们表明,行为周期速度的温度依赖变化可以用时钟本身速度的变化来解释。虽然所有时钟的速度对热能不敏感,但我们发现在神经元中,时钟速度是由温度信息调节的。当超过~26°C的阈值~24小时时,由Lim1同源结构域转录因子介导的途径会指示果蝇大脑中的时钟加速。时钟加速使早晨更早醒来。这项研究表明,适度改变生物钟速度可以通过不影响昼夜节律计时可靠性的调节步骤,实现行为热适应。
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引用次数: 0
CRISPRi screening in cultured human astrocytes uncovers distal enhancers controlling genes dysregulated in Alzheimer’s disease 在培养的人类星形胶质细胞中进行CRISPRi筛选,发现控制阿尔茨海默病失调基因的远端增强子
IF 25 1区 医学 Q1 NEUROSCIENCES Pub Date : 2025-12-18 DOI: 10.1038/s41593-025-02154-3
Nicole F. O. Green, Gavin J. Sutton, Javier Pérez-Burillo, Juli Wang, Samuel Bagot, Hannah G. Danon, Kieran Walsh, Akira Gokool, Samantha A. Miles, Guang Yang, Charles A. Herring, Yuheng Liang, Grant Pfundstein, Vladimir Sytnyk, Hamid Alinejad-Rokny, Ryan Lister, Joseph Rosenbluh, Johann A. Gagnon-Bartsch, Irina Voineagu
Genetic variants associated with complex traits often lie in distal enhancers. While candidate enhancers have been mapped genome wide, their functional state and gene targets in specific cell types remain unclear. Here we present AstroREG, a resource of enhancer–gene interactions in human primary astrocytes, generated by combining CRISPR inhibition (CRISPRi), single-cell RNA-seq and machine learning. By functionally testing nearly 1,000 PsychENCODE enhancers, we identified more than 150 regulatory interactions, revealing enhancers that control key astrocyte functions and genes implicated in Alzheimer’s disease. The CRISPRi screen also provided valuable ground-truth data from a primary cell type for training and benchmarking prediction models of enhancer activity. We thus developed EGrf, a random forest (RF) model trained on these data, and applied it genome wide to predict regulatory interactions with high specificity. Together, our data provide a comprehensive functional map of enhancer-mediated regulation in a key glial cell type, shedding light on brain function and disease.
与复杂性状相关的遗传变异通常存在于远端增强子中。虽然候选增强子已经在全基因组范围内定位,但它们在特定细胞类型中的功能状态和基因靶点仍不清楚。在这里,我们介绍了AstroREG,这是人类原代星形胶质细胞中增强子基因相互作用的资源,通过结合CRISPR抑制(CRISPRi)、单细胞RNA-seq和机器学习产生。通过对近1000个PsychENCODE增强子进行功能测试,我们确定了150多个调节相互作用,揭示了控制关键星形胶质细胞功能和阿尔茨海默病相关基因的增强子。CRISPRi筛选还为增强子活性的训练和基准预测模型提供了有价值的原代细胞类型的基本事实数据。因此,我们开发了EGrf,一种基于这些数据训练的随机森林(RF)模型,并将其应用于全基因组范围内,以高特异性预测调控相互作用。总之,我们的数据提供了增强剂介导的关键胶质细胞类型的全面功能图谱,揭示了脑功能和疾病。
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引用次数: 0
Cold and lithium delay forgetting of olfactory memories in Caenorhabditis elegans 低温和锂延迟秀丽隐杆线虫嗅觉记忆的遗忘
IF 25 1区 医学 Q1 NEUROSCIENCES Pub Date : 2025-12-18 DOI: 10.1038/s41593-025-02143-6
Dana Landschaft-Berliner, Kesem Goldstein, Guy Teichman, Sarit Anava, Hila Gingold, Yehuda Salzberg, Itai Rieger, Noam Levy, Vladyslava Pechuk, Hagar Setty, Priti Agarwal, Dror Sagi, Dror Cohen, Evelina Nikelshparg, Anat Ben-Zvi, Antonio Miranda-Vizuete, Ronen Zaidel-Bar, Meital Oren-Suissa, Oded Rechavi
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引用次数: 0
Phosphorylated tau exhibits antimicrobial activity capable of neutralizing herpes simplex virus 1 infectivity in human neurons 磷酸化的tau蛋白表现出抗菌活性,能够中和人类神经元中单纯疱疹病毒1的感染性
IF 25 1区 医学 Q1 NEUROSCIENCES Pub Date : 2025-12-17 DOI: 10.1038/s41593-025-02157-0
William A. Eimer, Alex S. Rodriguez, Michael T. DeFao, Simon Ehricke, Joseph Park, Deepak K. Vijaya Kumar, Nanda K. Navalpur Shanmugam, Sanjana Singh, Tara Sawhney, Robert D. Moir, Rudolph E. Tanzi
Tau is a microtubule-associated cytoskeletal protein, which, when hyperphosphorylated and aggregated, can result in a myriad of different tauopathies, including Alzheimer’s disease (AD). We previously showed that the principal component of senile plaques, amyloid beta (Aβ), is an antimicrobial peptide capable of binding and entrapping microbial pathogens. Here we show that tau is hyperphosphorylated in neurons in response to viral infection and can neutralize herpes simplex virus 1 (HSV-1) infectivity by directly binding to viral capsids. Our data suggest that the ‘pathogenic’ characteristics of tau hyperphosphorylation, microtubule destabilization and aggregation are part of an antiviral response, in which tau serves as a host defense protein in the innate immune system of the brain. The combined antimicrobial activities of Aβ and phosphorylated tau resulting in Aβ plaques and neurofibrillary tangles, along with neuroinflammation, suggest that AD neuropathology may have evolved as an orchestrated innate immune host defense response to microbial infection in the brain.
Tau是一种微管相关的细胞骨架蛋白,当其过度磷酸化和聚集时,可导致无数不同的Tau病,包括阿尔茨海默病(AD)。我们之前的研究表明老年斑的主要成分β淀粉样蛋白(Aβ)是一种抗菌肽,能够结合和捕获微生物病原体。在这里,我们发现tau蛋白在神经元中对病毒感染的反应是过度磷酸化的,并且可以通过直接结合病毒衣壳来中和单纯疱疹病毒1型(HSV-1)的传染性。我们的数据表明,tau过度磷酸化、微管不稳定和聚集的“致病性”特征是抗病毒反应的一部分,其中tau在大脑的先天免疫系统中充当宿主防御蛋白。Aβ和磷酸化tau的联合抗菌活性导致Aβ斑块和神经原纤维缠结,以及神经炎症,表明AD神经病理学可能已经进化为大脑中针对微生物感染的精心安排的先天免疫宿主防御反应。
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引用次数: 0
BOLD signal changes can oppose oxygen metabolism across the human cortex. BOLD信号的改变会阻碍人体皮层的氧代谢。
IF 25 1区 医学 Q1 NEUROSCIENCES Pub Date : 2025-12-16 DOI: 10.1038/s41593-025-02132-9
Samira M Epp,Gabriel Castrillón,Beijia Yuan,Jessica Andrews-Hanna,Christine Preibisch,Valentin Riedl
Functional magnetic resonance imaging measures brain activity indirectly by monitoring changes in blood oxygenation levels, known as the blood-oxygenation-level-dependent (BOLD) signal, rather than directly measuring neuronal activity. This approach crucially relies on neurovascular coupling, the mechanism that links neuronal activity to changes in cerebral blood flow. However, it remains unclear whether this relationship is consistent for both positive and negative BOLD responses across the human cortex. Here we found that about 40% of voxels with significant BOLD signal changes during various tasks showed reversed oxygen metabolism, particularly in the default mode network. These 'discordant' voxels differed in baseline oxygen extraction fraction and regulated oxygen demand via oxygen extraction fraction changes, whereas 'concordant' voxels depended mainly on cerebral blood flow changes. Our findings challenge the canonical interpretation of the BOLD signal, indicating that quantitative functional magnetic resonance imaging provides a more reliable assessment of both absolute and relative changes in neuronal activity.
功能性磁共振成像通过监测血氧水平的变化间接测量大脑活动,被称为血氧水平依赖(BOLD)信号,而不是直接测量神经元活动。这种方法主要依赖于神经血管耦合,即将神经元活动与脑血流变化联系起来的机制。然而,目前尚不清楚这种关系是否与人类皮层的阳性和阴性BOLD反应一致。在这里,我们发现在各种任务中BOLD信号发生显著变化的体素中,约有40%表现出氧代谢逆转,尤其是在默认模式网络中。这些“不协调”体素在基线氧提取分数和通过氧提取分数变化调节的需氧量方面存在差异,而“协调”体素主要依赖于脑血流变化。我们的研究结果挑战了对BOLD信号的规范解释,表明定量功能磁共振成像可以更可靠地评估神经元活动的绝对和相对变化。
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引用次数: 0
A fully iPS-cell-derived 3D model of the human blood–brain barrier for exploring neurovascular disease mechanisms and therapeutic interventions 一个完全ips细胞衍生的人类血脑屏障3D模型,用于探索神经血管疾病机制和治疗干预
IF 25 1区 医学 Q1 NEUROSCIENCES Pub Date : 2025-12-15 DOI: 10.1038/s41593-025-02123-w
Judit González-Gallego, Katalin Todorov-Völgyi, Stephan A. Müller, Sophie Antesberger, Mihail Ivilinov Todorov, Rainer Malik, Rita Grimalt-Mirada, Carolina Cardoso Gonçalves, Martina Schifferer, Georg Kislinger, Isabel Weisheit, Barbara Lindner, Dennis Crusius, Joseph Kroeger, Mila Borri, Ali Erturk, Mark Nelson, Thomas Misgeld, Stefan F. Lichtenthaler, Martin Dichgans, Dominik Paquet
Blood–brain barrier (BBB) integrity is critical for brain homeostasis, with malfunctions contributing to neurovascular and neurodegenerative disorders. Mechanistic studies on BBB function have been mostly conducted in rodent and in vitro models, which recapitulate some disease features, but have limited translatability to humans and pose challenges for drug discovery. Here we report on a fully human induced pluripotent stem (iPS)-cell-derived, microfluidic three-dimensional (3D) BBB model consisting of endothelial cells (ECs), mural cells and astrocytes. Our model expresses typical fate markers, forms a barrier in vessel-like tubes and enables perfusion, including with human blood. Deletion of FOXF2 in ECs, a major risk gene for cerebral small vessel disease, induced key features of BBB dysfunction, including compromised cell junction integrity and enhanced caveolae formation. Proteomic analysis revealed dysregulated endocytosis and cell junction pathways. Disease features phenocopied those seen in mice with EC-specific Foxf2 deficiency. Moreover, lipid-nanoparticle-based treatment with Foxf2 mRNA rescued BBB deficits, demonstrating the potential for drug development.
血脑屏障(BBB)的完整性对大脑稳态至关重要,其功能障碍会导致神经血管和神经退行性疾病。关于血脑屏障功能的机制研究主要是在啮齿动物和体外模型中进行的,这些模型概括了一些疾病特征,但对人类的可转译性有限,并对药物发现构成挑战。在这里,我们报道了一个完全人类诱导多能干细胞(iPS)衍生的,由内皮细胞(ECs),壁细胞和星形胶质细胞组成的微流体三维(3D)血脑屏障模型。我们的模型表达了典型的命运标记,在血管样管中形成屏障,并使灌注成为可能,包括与人类血液的灌注。在ECs中,FOXF2是脑血管疾病的主要风险基因,其缺失可诱导血脑屏障功能障碍的关键特征,包括细胞连接完整性受损和小泡形成增强。蛋白质组学分析显示胞吞作用和细胞连接途径失调。在ec特异性Foxf2缺乏症小鼠中所见的疾病特征与表型相似。此外,基于脂质纳米颗粒的Foxf2 mRNA治疗可挽救血脑屏障缺陷,显示出药物开发的潜力。
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引用次数: 0
The stroke risk gene Foxf2 maintains brain endothelial cell function via Tie2 signaling 卒中风险基因Foxf2通过Tie2信号传导维持脑内皮细胞功能
IF 25 1区 医学 Q1 NEUROSCIENCES Pub Date : 2025-12-15 DOI: 10.1038/s41593-025-02136-5
Katalin Todorov-Völgyi, Judit González-Gallego, Stephan A. Müller, Mihail Ivilinov Todorov, Fatma Burcu Seker, Simon Frerich, Filippo M. Cernilogar, Luise Schröger, Rainer Malik, Jiayu Cao, Gemma Llovera, Stefan Roth, Ulrike Schillinger, Martina Schifferer, Azadeh Reyahi, Dennis Crusius, Liliana D. Pedro, Mikael Simons, Peter Carlsson, Ali Ertürk, Arthur Liesz, Gunnar Schotta, Nikolaus Plesnila, Stefan F. Lichtenthaler, Dominik Paquet, Martin Dichgans
Cerebral small vessel disease (SVD) is a common chronic cerebrovascular disorder with poorly understood pathomechanisms. Genetic studies have identified FOXF2 as a major risk gene for both SVD and stroke. FOXF2 encodes a transcription factor primarily expressed in brain pericytes and endothelial cells (ECs); however, its mechanistic role in cerebrovascular disease remains unknown. Here we show that Foxf2 maintains EC function through Tie2 signaling. RNA and chromatin sequencing identified FOXF2 as a transcriptional activator of Tie2 and other endothelial lineage-specific genes. The deletion of EC-specific Foxf2 in adult mice resulted in blood–brain barrier leakage, which worsened after experimental stroke. Proteomic analyses of Foxf2-deficient mouse brain-derived and human-induced pluripotent stem cell-derived ECs that lack FOXF2 revealed a downregulation of multiple proteins involved in Tie2 signaling. Endothelial Foxf2 deficiency impaired functional hyperemia, reduced NO production and increased infarct size through disrupted Tie2 signaling, effects that were rescued by pharmacological activation of Tie2 with AKB-9778. Collectively, our results highlight the critical role of Foxf2-regulated Tie2 signaling in SVD and stroke, suggesting new avenues for therapeutic interventions.
脑血管病(SVD)是一种常见的慢性脑血管疾病,其发病机制尚不清楚。遗传学研究已经确定FOXF2是SVD和中风的主要风险基因。FOXF2编码一种主要表达于脑周细胞和内皮细胞(ECs)的转录因子;然而,其在脑血管疾病中的机制作用尚不清楚。我们发现Foxf2通过Tie2信号传导维持EC功能。RNA和染色质测序鉴定FOXF2是Tie2和其他内皮细胞谱系特异性基因的转录激活因子。成年小鼠ec特异性Foxf2的缺失导致血脑屏障渗漏,并在实验性脑卒中后恶化。对FOXF2缺陷小鼠脑源性和人诱导多能干细胞来源的缺乏FOXF2的ECs进行的蛋白质组学分析显示,参与Tie2信号传导的多种蛋白下调。内皮Foxf2缺陷通过破坏Tie2信号导致功能性充血、一氧化氮生成减少和梗死面积增加,这些效应通过AKB-9778对Tie2的药理激活得以恢复。总之,我们的研究结果强调了foxf2调节的Tie2信号在SVD和卒中中的关键作用,为治疗干预提供了新的途径。
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引用次数: 0
Edward Kravitz (1932-2025). 爱德华·克拉维茨(1932-2025)。
IF 2 1区 医学 Q1 NEUROSCIENCES Pub Date : 2025-12-12 DOI: 10.1038/s41593-025-02185-w
Soha Ashrafi, David D Ginty, Dragana Rogulja
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引用次数: 0
A. J. Major et al. reply. A. J. Major等人回复。
IF 25 1区 医学 Q1 NEUROSCIENCES Pub Date : 2025-12-12 DOI: 10.1038/s41593-025-02168-x
Alex James Major,Ahmed Abdaltawab,Jessica M Phillips,Tian Wang,Eric Kenji Lee,Maxwell J Lichtenfeld,Chandramouli Chandrasekaran,Yuri B Saalmann,Alexander Maier,Robert Desimone,Earl K Miller,André M Bastos,Diego Mendoza-Halliday
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引用次数: 0
期刊
Nature neuroscience
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