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Author Correction: Genome-wide forward genetic screening to identify receptors and proteins mediating nanoparticle uptake and intracellular processing 作者更正:通过全基因组前向遗传筛选确定介导纳米粒子吸收和细胞内处理的受体和蛋白质
IF 38.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-08-14 DOI: 10.1038/s41565-024-01778-z
Daphne Montizaan, Roberta Bartucci, Catharina Reker-Smit, Sander de Weerd, Christoffer Åberg, Victor Guryev, Diana C. J. Spierings, Anna Salvati
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引用次数: 0
Coupled nanopores for single-molecule detection 用于单分子检测的耦合纳米孔
IF 38.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-08-14 DOI: 10.1038/s41565-024-01746-7
Yung-Chien Chou, Chih-Yuan Lin, Alice Castan, Joshua Chen, Rachael Keneipp, Parisa Yasini, Dimitri Monos, Marija Drndić
Rapid sensing of molecules is increasingly important in many studies and applications, such as DNA sequencing and protein identification. Here, beyond atomically thin 2D nanopores, we conceptualize, simulate and experimentally demonstrate coupled, guiding and reusable bilayer nanopore platforms, enabling advanced ultrafast detection of unmodified molecules. The bottom layer can collimate and decelerate the molecule before it enters the sensing zone, and the top 2D pore (~2 nm) enables position sensing. We varied the number of pores in the bottom layer from one to nine while fixing one 2D pore in the top layer. When the number of pores in the bottom layer is reduced to one, sensing is performed by both layers, and distinct T- and W-shaped translocation signals indicate the precise position of molecules and are sensitive to fragment lengths. This is uniquely enabled by microsecond resolution capabilities and precision nanofabrication. Coupled nanopores represent configurable multifunctional systems with inter- and intralayer structures for improved electromechanical control and prolonged dwell times in a 2D sensing zone. In this study, the authors present the design and fabrication of reusable, atomically thin, coupled bilayer solid-state nanopores that enable the slowing down and positional tracking of molecules for label-free, single-molecule sensing.
在 DNA 测序和蛋白质鉴定等许多研究和应用中,分子的快速感应越来越重要。在这里,除了原子级薄的二维纳米孔之外,我们还构思、模拟并实验演示了耦合、导向和可重复使用的双层纳米孔平台,从而实现了对未修饰分子的先进超快检测。底层可在分子进入传感区之前对其进行准直和减速,而顶层的二维孔(约 2 纳米)则可实现位置传感。我们在顶层固定一个二维孔的同时,将底层的孔数量从一个变为九个。当底层孔的数量减少到一个时,两层都能进行感应,不同的 T 形和 W 形易位信号显示分子的精确位置,并对片段长度敏感。微秒级的分辨率能力和精密的纳米制造工艺使这一独特功能得以实现。耦合纳米孔是可配置的多功能系统,具有层间和层内结构,可改善机电控制并延长二维传感区的停留时间。
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引用次数: 0
Durable and programmable ultrafast nanophotonic matrix of spectral pixels 耐用且可编程的超快光谱像素纳米光子矩阵
IF 38.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-08-12 DOI: 10.1038/s41565-024-01756-5
Tingbiao Guo, Zhi Zhang, Zijian Lin, Jiahan Tian, Yi Jin, Julian Evans, Yinghe Xu, Sailing He
Locally addressable nanophotonic devices are essential for modern applications such as light detection, optical imaging, beam steering and displays. Despite recent advances, a versatile solution with a high-speed tuning rate, long-life durability and programmability across multiple pixels remains elusive. Here we introduce a programmable nanophotonic matrix consisting of vanadium dioxide (VO2) cavities on pixelated microheaters that meets all these requirements. The indirect Joule heating of these VO2 cavities can result in pronounced spectral modulation with colour changes and ensures exceptional endurance even after a million switching cycles. Precise control over the thermal dissipation power through a SiO2 layer of an optimized thickness on Si facilitates an ultrafast modulation rate exceeding 70 kHz. We demonstrated a video-rate nanophotonic colour display by electrically addressing a matrix of 12 × 12 pixels. Furthermore, inspired by the unique pixel-level programmability with multiple intermediate states of the spectral pixels, a spatiotemporal modulation concept is introduced for spectrum detection. Electrically addressable VO2 elements show large resonance shifts during phase transitions, producing a brilliant colour change at a modulation rate of 70 kHz.
局部可寻址纳米光子器件对于光检测、光学成像、光束转向和显示等现代应用至关重要。尽管最近取得了一些进展,但具有高速调谐率、长寿命耐久性和多像素可编程性的多功能解决方案仍然遥遥无期。在这里,我们介绍一种可编程纳米光子矩阵,它由像素化微加热器上的二氧化钒(VO2)空腔组成,能够满足所有这些要求。这些二氧化钒空腔的间接焦耳加热可产生明显的光谱调制和颜色变化,并确保即使在百万次开关周期后仍具有超强的耐用性。通过优化厚度的二氧化硅层对热耗散功率进行精确控制,可实现超过 70 kHz 的超快调制速率。我们通过对 12 × 12 像素矩阵进行电子寻址,展示了视频速率纳米光子彩色显示屏。此外,受独特的像素级可编程性和光谱像素的多种中间状态的启发,我们还引入了用于光谱检测的时空调制概念。
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引用次数: 0
Engineering modular enzymes using DNA origami 利用 DNA 折纸设计模块化酶
IF 38.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-08-08 DOI: 10.1038/s41565-024-01739-6
A DNA origami nanocompartment is designed to trap an unfoldase machine in a unidirectional orientation. This trapping provides a gateway mechanism for substrate recruitment and translocation to a downstream compartment that hosts a protease. Kinetics and proteomics data demonstrate that the physical connection of the DNA-based modules improves the global performance of the chimera and reduces off-target reactions.
DNA 折纸纳米隔室的设计目的是以单向方向捕获折叠酶机器。这种捕获为底物招募和转运到承载蛋白酶的下游区室提供了一个网关机制。动力学和蛋白质组学数据表明,基于 DNA 的模块的物理连接提高了嵌合体的整体性能,并减少了脱靶反应。
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引用次数: 0
Author Correction: Universal STING mimic boosts antitumour immunity via preferential activation of tumour control signalling pathways 作者更正:通用 STING 模拟物通过优先激活肿瘤控制信号通路增强抗肿瘤免疫力
IF 38.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-08-08 DOI: 10.1038/s41565-024-01761-8
Ying Wang, Sirui Li, Mengying Hu, Yuchen Yang, Ellie McCabe, Lillian Zhang, Andrew M. Withrow, Jenny P.-Y. Ting, Rihe Liu
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引用次数: 0
An artificial metabzyme for tumour-cell-specific metabolic therapy 用于肿瘤细胞特异性代谢治疗的人工代谢酶
IF 38.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-08-05 DOI: 10.1038/s41565-024-01733-y
Xi Hu, Bo Zhang, Miao Zhang, Wenshi Liang, Bangzhen Hong, Zhiyuan Ma, Jianpeng Sheng, Tianqi Liu, Shengfei Yang, Zeyu Liang, Jichao Zhang, Chunhai Fan, Fangyuan Li, Daishun Ling
Metabolic dysregulation constitutes a pivotal feature of cancer progression. Enzymes with multiple metal active sites play a major role in this process. Here we report the first metabolic-enzyme-like FeMoO4 nanocatalyst, dubbed ‘artificial metabzyme’. It showcases dual active centres, namely, Fe2+ and tetrahedral Mo4+, that mirror the characteristic architecture of the archetypal metabolic enzyme xanthine oxidoreductase. Employing spatially dynamic metabolomics in conjunction with the assessments of tumour-associated metabolites, we demonstrate that FeMoO4 metabzyme catalyses the metabolic conversion of tumour-abundant xanthine into uric acid. Subsequent metabolic adjustments orchestrate crosstalk with immune cells, suggesting a potential therapeutic pathway for cancer. Our study introduces an innovative paradigm in cancer therapy, where tumour cells are metabolically reprogrammed to autonomously modulate and directly interface with immune cells through the intervention of an artificial metabzyme, for tumour-cell-specific metabolic therapy. A metabolic-enzyme-like nanocatalyst is reported, dubbed ‘artificial metabzyme’. Tumour cells can be metabolically reprogrammed to autonomously modulate and interact with immune cells, facilitating tumour-cell-specific metabolic therapy.
代谢失调是癌症进展的一个关键特征。具有多个金属活性位点的酶在这一过程中发挥着重要作用。在这里,我们报告了首个类似代谢酶的 FeMoO4 纳米催化剂,被称为 "人工代谢酶"。它展示了双活性中心,即 Fe2+ 和四面体 Mo4+,反映了典型代谢酶黄嘌呤氧化还原酶的特征结构。利用空间动态代谢组学和肿瘤相关代谢物的评估,我们证明了FeMoO4代谢酶催化了肿瘤中大量黄嘌呤向尿酸的代谢转化。随后的代谢调整协调了与免疫细胞之间的串扰,这表明这是一种潜在的癌症治疗途径。我们的研究为癌症治疗引入了一种创新模式,即通过人工代谢酶的干预,对肿瘤细胞进行代谢重编程,使其自主调节并直接与免疫细胞对接,从而实现肿瘤细胞特异性代谢治疗。
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引用次数: 0
Quantifying T cell receptor mechanics at membrane junctions using DNA origami tension sensors 利用 DNA 折纸张力传感器量化膜连接处的 T 细胞受体力学结构
IF 38.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-08-05 DOI: 10.1038/s41565-024-01723-0
Yuesong Hu, Jhordan Rogers, Yuxin Duan, Arventh Velusamy, Steven Narum, Sarah Al Abdullatif, Khalid Salaita
The T cell receptor (TCR) is thought to be a mechanosensor, meaning that it transmits mechanical force to its antigen and leverages the force to amplify the specificity and magnitude of TCR signalling. Although a variety of molecular probes have been proposed to quantify TCR mechanics, these probes are immobilized on hard substrates, and thus fail to reveal fluid TCR–antigen interactions in the physiological context of cell membranes. Here we developed DNA origami tension sensors (DOTS) which bear force sensors on a DNA origami breadboard and allow mapping of TCR mechanotransduction at dynamic intermembrane junctions. We quantified the mechanical forces at fluid TCR–antigen bonds and observed their dependence on cell state, antigen mobility, antigen potency, antigen height and F-actin activity. The programmability of DOTS allows us to tether these to microparticles to mechanically screen antigens in high throughput using flow cytometry. Additionally, DOTS were anchored onto live B cells, allowing quantification of TCR mechanics at immune cell–cell junctions. The authors present nanoscale DNA origami tension sensors tethered to lipid membranes and reveal the magnitude, dynamics and driving mechanisms of molecular forces experienced by immunoreceptors at fluid membrane junctions.
T细胞受体(TCR)被认为是一种机械传感器,这意味着它将机械力传递给其抗原,并利用这种力放大TCR信号的特异性和幅度。虽然已经提出了多种分子探针来量化 TCR 力学,但这些探针都固定在坚硬的基底上,因此无法揭示细胞膜生理环境下的流体 TCR 抗原相互作用。在这里,我们开发了DNA折纸张力传感器(DOTS),它在DNA折纸面包板上承载力传感器,可以绘制动态膜间连接处的TCR机械传导图。我们对流体 TCR 抗原结合处的机械力进行了量化,并观察了它们对细胞状态、抗原流动性、抗原效力、抗原高度和 F-肌动蛋白活性的依赖性。DOTS 的可编程性使我们能够将其拴在微颗粒上,利用流式细胞仪对抗原进行高通量机械筛选。此外,我们还将 DOTS 固定在活 B 细胞上,这样就能对免疫细胞-细胞连接处的 TCR 力学进行量化。
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引用次数: 0
Integrative catalytic pairs for efficient multi-intermediate catalysis 高效多中间体催化的整合催化对
IF 38.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-08-05 DOI: 10.1038/s41565-024-01716-z
Qilun Wang, Yaqi Cheng, Hong Bin Yang, Chenliang Su, Bin Liu
Single-atom catalysts (SACs) have attracted considerable research interest owing to their combined merits of homogeneous and heterogeneous catalysts. However, the uniform and isolated active sites of SACs fall short in catalysing complex chemical processes that simultaneously involve multiple intermediates. In this Review, we highlight an emerging class of catalysts with adjacent binary active centres, which is called integrative catalytic pairs (ICPs), showing not only atomic-scale site-to-site electronic interactions but also synergistic catalytic effects. Compared with SACs or their derivative dual-atom catalysts (DACs), multi-interactive intermediates on ICPs can overcome kinetic barriers, adjust reaction pathways and break the universal linear scaling relations as the smallest active units. Starting from this active-site design principle, each single active atom can be considered as a brick to further build integrative catalytic clusters (ICCs) with desirable configurations, towards trimer or even larger multi-atom units depending on the requirement of a given reaction. This Review highlights the definition, functions and potential of integrative catalytic pairs in multi-intermediate reactions, as a forward step relative to single- and dual-atom catalysts.
单原子催化剂(SAC)兼具均相催化剂和异相催化剂的优点,因此引起了人们的极大研究兴趣。然而,单原子催化剂均匀且孤立的活性位点在催化同时涉及多个中间体的复杂化学过程时存在不足。在本综述中,我们将重点介绍一类具有相邻二元活性中心的新兴催化剂,即 "整合催化对(ICP)"。与 SAC 或其衍生物双原子催化剂(DAC)相比,ICP 上的多活性中间体作为最小的活性单元,可以克服动力学障碍、调整反应途径并打破普遍的线性比例关系。从这一活性位设计原理出发,每个单个活性原子都可以被视为一块砖,用于进一步构建具有理想构型的整合催化簇(ICC),根据特定反应的要求,向三聚体甚至更大的多原子单元发展。
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引用次数: 0
Deep subwavelength topological edge state in a hyperbolic medium 双曲介质中的深亚波长拓扑边缘态。
IF 38.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-08-01 DOI: 10.1038/s41565-024-01737-8
Lorenzo Orsini, Hanan Herzig Sheinfux, Yandong Li, Seojoo Lee, Gian Marcello Andolina, Orazio Scarlatella, Matteo Ceccanti, Karuppasamy Soundarapandian, Eli Janzen, James H. Edgar, Gennady Shvets, Frank H. L. Koppens
Topological photonics offers the opportunity to control light propagation in a way that is robust from fabrication disorders and imperfections. However, experimental demonstrations have remained on the order of the vacuum wavelength. Theoretical proposals have shown topological edge states that can propagate robustly while embracing deep subwavelength confinement that defies diffraction limits. Here we show the experimental proof of these deep subwavelength topological edge states by implementing periodic modulation of hyperbolic phonon polaritons within a van der Waals heterostructure composed of isotopically pure hexagonal boron nitride flakes on patterned gold films. The topological edge state is confined in a subdiffraction volume of 0.021 µm3, which is four orders of magnitude smaller than the free-space excitation wavelength volume used to probe the system, while maintaining the resonance quality factor above 100. This finding can be directly extended to and hybridized with other van der Waals materials to broadened operational frequency ranges, streamline integration of diverse polaritonic materials, and compatibility with electronic and excitonic systems. A photonic topological edge state, achieved by employing hexagonal boron nitride and patterned gold films, confines light four orders of magnitude below the diffraction limit while preserving a high quality factor.
拓扑光子学为控制光的传播提供了机会,这种方法不受制造失调和缺陷的影响。然而,实验演示仍然停留在真空波长的数量级上。理论上的建议表明,拓扑边缘态可以稳健地传播,同时具有深亚波长约束,打破了衍射极限。在这里,我们通过在范德华异质结构中对双曲声子极化子进行周期性调制,展示了这些深亚波长拓扑边缘态的实验证明,该异质结构由图案化金薄膜上的同位素纯六方氮化硼薄片组成。拓扑边缘态被限制在 0.021 µm3 的亚衍射体积内,比用于探测该系统的自由空间激发波长体积小四个数量级,同时共振品质因数保持在 100 以上。这一发现可以直接扩展到其他范德华材料并与之杂交,从而拓宽工作频率范围,简化各种极性材料的集成,并与电子和激子系统兼容。
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引用次数: 0
A molecular spin on a scanning probe tip enables quantum sensing at the atomic scale 扫描探针尖端的分子自旋实现了原子尺度的量子传感。
IF 38.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-08-01 DOI: 10.1038/s41565-024-01731-0
Quantum sensing at the atomic scale has proved challenging. Now, a quantum sensor comprising a molecular spin, which can be addressed by electron spin resonance, attached to the tip of a scanning tunnelling microscope enables the measurement of weak electric and magnetic fields with sub-ångstrom spatial resolution.
事实证明,原子尺度的量子传感具有挑战性。现在,一种由分子自旋组成的量子传感器连接到了扫描隧道显微镜的尖端,这种传感器可以通过电子自旋共振来解决分子自旋问题,从而能够以亚欧姆的空间分辨率测量微弱的电场和磁场。
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引用次数: 0
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Nature nanotechnology
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