《自然》一週論文導讀

编译|李言

Science, 29 October 2026, Volume 658 Issue 8138

《自然》2026年10月29日，第658卷，8138期

物理学Physics

A single-molecule spin–photon interface

单分子自旋—光子接口

▲ 作者：Simon Roggors, Thomas Unden et al.

▲链接：

https://www.nature.com/articles/s41586-026-11147-6

▲摘要：

研究人员表明，一种嵌入结构匹配的主体晶体中的三重态基态卡宾分子，可作为具有单分子可寻址性的稳健自旋—光子接口。该系统表现出窄零声子线、超过一小时的光谱稳定性、自旋选择性光学跃迁以及单分子光学检测磁共振。

相干控制实现了毫秒级动力学解耦相干时间和数十毫秒的自旋弛豫时间，温度为4.5K。这些结果确立了分子量子比特作为单发射器量子光学的可行平台，同时保留了自下而上化学设计和可加工材料的优势。

▲ Abstract：

Here we show that a triplet ground-state carbene molecule, embedded within a structurally matched host crystal, functions as a robust spin–photon interface with single-molecule addressability. The system exhibits narrow ZPLs, spectral stability over more than an hour, spin-selective optical transitions and single-molecule optically detected magnetic resonance. Coherent control yields millisecond-scale dynamical-decoupling coherence and tens-of-milliseconds spin relaxation at a temperature of 4.5?K. These results establish molecular qubits as a viable platform for single-emitter quantum optics while preserving the advantages of bottom-up chemical design and processable materials.

材料科学Material Sciences

Narrow carbon pentaheptite nanoribbon as a covalent metal

超窄五七环碳纳米带作为共价金属

▲ 作者：Jianmin Huang, Qitang Fan et al.

▲链接：

https://www.nature.com/articles/s41586-026-11202-2

▲摘要：

研究者报道了一种分级方法，用于在表面合成平面碳五七环碳纳米带，该方法通过将预合成的聚环辛二烯链转化并横向融合排列良好的聚戊搭烯链来实现。两种不同类型的超窄五七环碳纳米带具有相似的基底结构，由中央七元环组成，两侧边缘分别由取向相同（CPHN 1）或不同（CPHN 2）的聚戊搭烯链构成。

CPHN 1是本征金属，而CPHN 2是窄带隙半导体。CPHN 1纳米带表现出接近一个电导量子的近弹道电导，可与金属性碳纳米管相媲美。这凸显了CPHN 1作为一种有前景的平面碳金属，并提示了通向碳量子线的可能路径，尽管将其集成到器件中仍需进一步的合成优化。

▲ Abstract：

Here we report a hierarchical approach for the on-surface synthesis of planar carbon pentaheptite nanoribbons (CPHNs) by laterally fusing well-aligned polypentalene chains transformed from pre-synthesized polycyclooctadiene chains. Two distinct types of narrow pentaheptite nanoribbon share a similar basal structure consisting of a central heptagon chain flanked by either identically (CPHN?1) or differently (CPHN?2) oriented polypentalene chains on opposite lateral edges. CPHN?1 is an intrinsic metal, whereas CPHN?2 is a narrow-bandgap semiconductor. The CPHN?1 ribbon exhibits near-ballistic conductance approaching one conductance quantum, comparable to metallic carbon nanotubes. This highlights CPHN?1 as a promising planar carbon metal and suggests a possible route towards carbon quantum wires, although further synthetic optimization will be required for device integration.

生物学Biology

Dynamic protrusions mediate crawling motility in Asgard archaea

动态突起介导阿斯加德古菌的爬行运动

▲ 作者：Philipp Radler, Tobias Viehboeck et al.

▲链接：

https://www.nature.com/articles/s41586-026-11063-9

▲摘要：

对Lokiarchaea和Hodarchaea谱系中两种生物进行的活细胞显微观察显示，它们能在分钟时间尺度上动态且大幅地改变细胞形状，并分别以 1.5—4.8微米/分钟的速度生长和回缩其广泛的突起。黏附到玻璃表面后，细胞利用其突起进行主动爬行运动。

然而，在存在特定肌动蛋白抑制剂的情况下，观察到的动力学被阻止，表明肌动蛋白在这些过程中发挥核心作用。研究者观察到的细胞可塑性和运动性是原核生物中独特的特征，可能对第一批真核细胞的出现至关重要——这些真核细胞被认为是由阿斯加德古菌的一个成员与一种α—变形菌（线粒体的祖先）联合形成的。

▲ Abstract：

Here, live-cell microscopy of two organisms of the Lokiarchaea and Hodarchaea lineages showed that they dynamically and greatly change their cell shape on a minute time scale and grow and retract their extensive protrusions with a speed of 1.5–4.8 μm?min?1, respectively. After adhering to a glass surface, cells use their protrusions to undergo active crawling motion. In the presence of selected actin inhibitors, however, the observed dynamics were arrested, suggesting a central role of actin in these processes. The observed cellular plasticity and motility are unique features among prokaryotes and might have been crucial for the emergence of the first eukaryotic cells that are thought to have formed through the association of a member of the Asgard archaea and an α-proteobacterium, the ancestor of mitochondria.

Endocannabinoids facilitate reward engagement through retrograde gain control

内源性大麻素通过逆行增益控制促进奖赏参与

▲ 作者：David J. Marcus, Anthony E. English et al.

▲链接：

https://www.nature.com/articles/s41586-026-10967-w

▲摘要：

神经调质信号有望作为增益控制的神经机制，充当关键的调节因子，通过动态塑造兴奋性和抑制性快速神经传递来影响神经元活动。内源性大麻素信号系统是哺乳动物大脑中表达最广泛的神经调质系统，已被证明可在体外和离体条件下通过逆行、突触前作用过滤兴奋性和抑制性输入。

然而，内源性大麻素是否在自由活动的哺乳动物中发挥逆行增益控制，以最终促进动机行为，尚未得到证实。在此，研究者运用一套在体生理学、成像、遗传学和机器学习方法，揭示内源性大麻素的动态释放在通过遗传和解剖学定义明确的丘脑—纹状体环路控制奖赏寻求过程中的行为参与方面发挥基础性作用。

▲ Abstract：

Neuromodulatory signalling is poised to serve as a neural mechanism for gain control, acting as a crucial tuning factor to influence neuronal activity by dynamically shaping excitatory and inhibitory fast neurotransmission. The endocannabinoid (eCB) signalling system, the most widely expressed neuromodulatory system in the mammalian brain, has been demonstrated to filter excitatory and inhibitory inputs through retrograde, presynaptic action in vitro and ex vivo. However, whether eCBs exert retrograde gain control to ultimately facilitate motivated behaviours in freely moving mammals has not been established. Here, using a suite of in vivo physiological, imaging, genetic and machine learning-based approaches, we uncover a fundamental role for the dynamic release of eCBs in controlling behavioural engagement during reward seeking through a genetically and anatomically defined thalamostriatal circuit.

医学Medicine

Proximity-guided graph learning reveals tumour-associated proximity antigens

邻近引导的图学习揭示肿瘤相关邻近抗原

▲ 作者：Cody Scandore, Clare F. Malone et al.

▲链接：

https://www.nature.com/articles/s41586-026-11003-7

▲摘要：

研究者开发了一种工业化的表面蛋白邻近图谱绘制工作流程，用于在其膜微环境中探究肿瘤相关抗原。利用该工作流程，他们针对12种受体酪氨酸激酶和28种肿瘤细胞系统生成了248张邻近图谱。由此产生的图谱促成了MetaMap的开发——一个基于相关性的分析框架，用于定义空间蛋白群落并推断非靶向蛋白之间保守的邻近关系，同时确立了肿瘤相关邻近抗原的概念，即一类由疾病特异性空间邻近性而非仅由表达来定义的共靶点。

将这些邻近衍生关系整合到多模态优先级排序框架中，研究者鉴定并验证了EGFR–CDCP1作为一个肿瘤相关抗原—肿瘤相关邻近抗原配对，该配对可增强跨多种治疗模式的肿瘤细胞杀伤。总之，这项工作推动了将疾病相关膜邻近性作为精准多特异性治疗设计指导原则的发展。

▲ Abstract：

Here, we developed an industrialized surface protein proximity-mapping workflow to interrogate TAAs within their membrane microenvironments. Using this workflow, we generated 248 proximity maps across 12 receptor tyrosine kinases and 28 tumour cell systems. The resulting atlas enabled the development of MetaMap, a correlation-based analytical framework that defines spatial protein communities and infers conserved proximity relationships among non-targeted proteins, and establishes the concept of tumour-associated proximity antigens (TAPAs), a class of co-targets defined by disease-specific spatial proximity to TAAs rather than expression alone. Integrating these proximity-derived relationships within a multimodal prioritization framework, we identified and validated EGFR–CDCP1 as a TAA–TAPA pair that enhances tumour cell killing across therapeutic modalities. Together, this work advances disease-associated membrane proximity as a guiding principle for the design of precision multispecific therapeutics.

Development of a random background to understand ligand optimization

构建随机背景基线以理解配体优化

▲ 作者：Xinyu Xu, Olivier Mailhot et al.

▲链接：

https://www.nature.com/articles/s41586-026-11013-5

▲摘要：

为了初步建立配体优化的背景预期，研究者系统性地对6个靶点上的18个先导分子进行了单原子改变，共合成257个化合物。出乎意料的是，这些随机小扰动类似物中有11.3%将效力提高了十倍或更多。相反，它们通常具有更差的体外药代动力学。

尽管有可能找到效力增加足以补偿较差暴露和半衰期的类似物，从而在体内产生更有效的化合物，但总体而言，这揭示了配体优化的一个受挫景观。这项研究初步建立了配体效力优化的背景预期，并提供了一种简单的实现策略。它还初步量化了该领域在超越体外效力方面所面临的挑战。

▲ Abstract：

To begin to establish a background expectation for ligand optimization, here we systematically modified 18 lead molecules across six targets with single-atom changes; 257 compounds were synthesized. Unexpectedly, 11.3% of these random small perturbation analogues improved potency by tenfold or more. Conversely, they typically had worse in vitro pharmacokinetics. Although it was possible to find analogues where the potency increase compensated for inferior exposure and half-life, resulting in more potent compounds in vivo, overall, a frustrated landscape for ligand optimization is revealed. This study begins to establish a background expectation for ligand potency optimization and offers a simple strategy to do so. It also begins to quantify the challenges confronting the field in moving beyond in vitro potency.