当前共找到 18 篇文献分享。
1.
钟鸣 (2026-04-30 23:16):
#paper doi:10.1038/s41386-024-01829-y Mediodorsal thalamus projection to medial prefrontal cortical mediates social defeat stress-induced depression-like behaviors将C57与攻击性强的CD-1小鼠合并饲养来制造 慢性社交挫败应激(CSDS)模型,通过旷场、悬尾试验等行为学实验确认和筛选易感组。随后通过c-Fos免疫荧光和光纤记录(社交场景及迷宫悬尾等场景)分别确认CSDS小鼠中MD的谷氨酸能神经元活性降低。通过化学遗传学双向调控MD谷氨酸能神经元,验证其对抑郁行为的因果作用,并结合顺行/逆行病毒示踪确认了MD与mPFC存在直接突触环路,最后通过逆行失踪+光遗传技术,精准验证了环路的功能特性。本文首次明确MD–mPFC环路在抑郁中的因果作用,揭示了一条全新的抑郁环路机制
Fang Li, Xuefeng Zheng, Hanjie Wang, Lianghui Meng, Meiying Chen, Yuqing Hui, Danlei Liu, Yifei Li, Keman Xie, Jifeng Zhang ... >>>
Fang Li, Xuefeng Zheng, Hanjie Wang, Lianghui Meng, Meiying Chen, Yuqing Hui, Danlei Liu, Yifei Li, Keman Xie, Jifeng Zhang, Guoqing Guo <<<
2.
半面阳光 (2026-04-30 23:07):
#paper DOI: 10.1002/pd.6752. Prenat Diagn. 2025. Advances in Prenatal Cell-Free DNA Screening for Dominant Monogenic Conditions: A Review of Current Progress and Future Directions in Clinical Implementation. 这篇综述文章总结了产前 cfDNA 在显性单基因疾病筛查的最新进展,指出基于多基因 panel 的筛查具有良好前景,但在真正进入常规临床应用前,仍需要更大规模的验证研究和谨慎的临床实施。
Jun Liao, Naixin Xu, Harry Gao, Tristan Hardy, Brynn Levy, Lakshmi Mehta, Kwong Wai Choy, Hefeng Huang, Jinglan Zhang
Abstract:
ABSTRACTPrenatal cell‐free DNA (cfDNA) screening has advanced significantly, extending beyond detecting aneuploidies to sub‐chromosomal copy number variations. However, its application for screening dominant single‐gene conditions, often caused by de novo variants, remains underutilized in the general obstetric population. This study reviews recent data and experience on prenatal cfDNA screening for dominant monogenic conditions using multiple‐gene panels, highlighting its potential to enhance early detection and management of genetic disorders. Integrating comprehensive cfDNA screening into … >>>
ABSTRACTPrenatal cell‐free DNA (cfDNA) screening has advanced significantly, extending beyond detecting aneuploidies to sub‐chromosomal copy number variations. However, its application for screening dominant single‐gene conditions, often caused by de novo variants, remains underutilized in the general obstetric population. This study reviews recent data and experience on prenatal cfDNA screening for dominant monogenic conditions using multiple‐gene panels, highlighting its potential to enhance early detection and management of genetic disorders. Integrating comprehensive cfDNA screening into routine prenatal care could complement current imaging techniques and standard prenatal cfDNA screening, which may overlook pre‐symptomatic fetuses with dominant monogenic conditions in early gestation. Despite promising initial results, further research is needed to confirm the clinical validity and utility of cfDNA screening for these conditions. Larger and more diverse studies are necessary to assess the broader applicability of this technology. In addition, key challenges such as access, genetic counseling, ethical considerations, and policy development need to be addressed. A comprehensive approach, including rigorous test design, informed consent, and robust counseling, is essential for the successful adoption of expanded cfDNA screening, ultimately improving clinical outcomes. <<<
3.
cellsarts (2026-04-30 23:00):
#paper Thiele Bioinformatics (Oxford, England)DOI:10.1093/bioinformatics/bty9412019-07-01 摘要:动机:迄今为止,基于约束的建模在功能分析宏基因组数据方面的应用一直受到限制,部分原因在于缺乏合适的工具箱。结果:为填补这一空白,我们开发了一套全面的工具箱,用于构建(i)微生物间及宿主-微生物之间的代谢互作模型,以及(ii)利用微生物基因组规模代谢重建和宏基因组数据对微生物群落进行建模。该微生物组建模工具箱扩展了基于约束的重建与分析工具箱的功能。可用性和实现:微生物组建模工具箱及相关教程请访问Bioinformatics (Oxford, England)DOI:10.1093/bioinformatics/bty9412019-07-01 Motivation: The application of constraint-based modeling to functionally analyze metagenomic data has been limited so far, partially due to the absence of suitable toolboxes. Results: To address this gap, we created a comprehensive toolbox to model (i) microbe-microbe and host-microbe metabolic interactions, and (ii) microbial communities using microbial genome-scale metabolic reconstructions and metagenomic data. The Microbiome Modeling Toolbox extends the functionality of the constraint-based reconstruction and analysis toolbox. Availability and implementation: The Microbiome Modeling Toolbox and the tutorials at https://git.io/microbiomeModelingToolbox.
Federico Baldini, Almut Heinken, Laurent Heirendt, Stefania Magnusdottir, Ronan M T Fleming, Ines Thiele
Abstract:
Abstract

Motivation
The application of constraint-based modeling to functionally analyze metagenomic data has been limited so far, partially due to the absence of suitable toolboxes.


Results
To address this gap, we created a comprehensive toolbox to model (i) microbe–microbe and host–microbe metabolic interactions, and (ii) microbial communities using microbial genome-scale metabolic reconstructions and metagenomic data. The Microbiome Modeling Toolbox extends the functionality of the constraint-based reconstruction and analysis toolbox.


Availabili… >>>
Abstract<br> <br> Motivation<br> The application of constraint-based modeling to functionally analyze metagenomic data has been limited so far, partially due to the absence of suitable toolboxes.<br> <br> <br> Results<br> To address this gap, we created a comprehensive toolbox to model (i) microbe–microbe and host–microbe metabolic interactions, and (ii) microbial communities using microbial genome-scale metabolic reconstructions and metagenomic data. The Microbiome Modeling Toolbox extends the functionality of the constraint-based reconstruction and analysis toolbox.<br> <br> <br> Availability and implementation<br> The Microbiome Modeling Toolbox and the tutorials at https://git.io/microbiomeModelingToolbox.<br> <<<
4.
符毓 (2026-04-30 22:46):
#paper doi: arXiv:2604.26509v1, 2026, 3D Generation for Embodied AI and Robotic Simulation: A Survey. 本文以仿真为中心,对具身人工智能的3D生成技术进行了综述,并围绕三个部分展开:数据生成器——用于生成可用于仿真的资源,仿真环境——用于构建交互式世界,以及Sim2Real桥梁——用于支持现实世界的迁移。在每个部分中,都追踪了从面向外观的生成到感知物理特性、兼容仿真器的输出的演进过程:数据生成器越来越多地生成带有物理标注和运动学结构的资源;场景级方法将物理和语义约束集成到布局合成中;而Sim2Real方法则利用生成模型来缩小外观和动力学方面的领域差距 在这三个方面,都呈现出一个一致的趋势:3D生成的目标已从视觉上的逼真性转向仿真就绪性,这使得生成成为具身学习的核心基础设施层。然而,关键挑战依然存在,包括物理标注的匮乏、几何真实性和仿真器部署能力之间的差距、对可变形和动态资源的支持有限、评估标准分散以及持续存在的仿真与现实之间的差距 从根本上讲,当前的生态系统仍然是模块化且互不相连的,生成模型、物理引擎和机器人学习系统各自独立优化,并通过脆弱的转换流程连接起来
arXiv, 2026-04-29T10:17:55Z. DOI: 10.48550/arXiv.2604.26509
Tianwei Ye, Yifan Mao, Minwen Liao, Jian Liu, Chunchao Guo, Dazhao Du, Quanxin Shou, Fangqi Zhu, Song Guo
Abstract:
Embodied AI and robotic systems increasingly depend on scalable, diverse, and physically grounded 3D content for simulation-based training and real-world deployment. While 3D generative modeling has advanced rapidly, embodied applications impose requirements far beyond visual realism: generated objects must carry kinematic structure and material properties, scenes must support interaction and task execution, and the resulting content must bridge the gap between simulation and reality. This survey presents the first survey of 3D generation for embodied AI and organizes the literature around th… >>>
Embodied AI and robotic systems increasingly depend on scalable, diverse, and physically grounded 3D content for simulation-based training and real-world deployment. While 3D generative modeling has advanced rapidly, embodied applications impose requirements far beyond visual realism: generated objects must carry kinematic structure and material properties, scenes must support interaction and task execution, and the resulting content must bridge the gap between simulation and reality. This survey presents the first survey of 3D generation for embodied AI and organizes the literature around three roles that 3D generation plays in embodied systems. In \emph{Data Generator}, 3D generation produces simulation-ready objects and assets, including articulated, physically grounded, and deformable content for downstream interaction; in \emph{Simulation Environments}, it constructs interactive and task-oriented worlds, spanning structure-aware, controllable, and agentic scene generation; and in \emph{Sim2Real Bridge}, it supports digital twin reconstruction, data augmentation, and synthetic demonstrations for downstream robot learning and real-world transfer. We also show that the field is shifting from visual realism toward interaction readiness, and we identify the main bottlenecks, including limited physical annotations, the gap between geometric quality and physical validity, fragmented evaluation, and the persistent sim-to-real divide, that must be addressed for 3D generation to become a dependable foundation for embodied intelligence. Our project page is at https://3dgen4robot.github.io. <<<
5.
Vincent (2026-04-30 22:08):
#paper https://www.nature.com/articles/s41551-026-01634-6 Nat Biomed Eng, 2026 Empowering AI data scientists using a multi-agent LLM framework with self-evolving capabilities for autonomous, tool-aware biomedical data analyses. 该工作提出了一个面向生物医学数据分析的自进化多智能体系统 BioMedAgent,将复杂生物信息学任务统一建模为“工具感知 + workflow 构建”的可学习问题。系统基于 LLM 驱动的 multi-agent 架构,通过 interactive exploration 与 memory retrieval ,学习在不同任务中选择并组合多种生物信息学工具,自动构建可执行分析流程。与传统基于规则的 pipeline 不同,该系统具备自我进化能力,可根据执行结果进行反馈优化,逐步提升工具使用策略与任务完成质量。实验基于新构建的 BioMed-AQA benchmark(327 个真实生物医学分析任务),系统达到 77% 成功率,显著优于现有 LLM agent,并在外部数据集上表现出良好的泛化能力 。进一步结果表明,该系统能够完成跨组学分析、机器学习建模及医学图像分析等复杂任务,体现出跨任务迁移能力 。
Dechao Bu, Jingbo Sun, Kun Li, Zihao He, Wei Huang, Jinlin Hu, Shanshan Zhang, Shuangshuang Lei, Peipei Huo, Zhihao Wang ... >>>
Dechao Bu, Jingbo Sun, Kun Li, Zihao He, Wei Huang, Jinlin Hu, Shanshan Zhang, Shuangshuang Lei, Peipei Huo, Zhihao Wang, Sheng Wang, Tao Wang, Kai Gao, Yang Wu, Lianhe Zhao, Kai Wang, Gen Li, Huan Song, Yang Jin, Kang Zhang, Runsheng Chen, Yi Zhao <<<
6.
尹志 (2026-04-30 21:57):
#paper, Mechanistic insights into ASO-RNA complexation: Advancing antisense oligonucleotide design strategies,DOI:https://doi.org/10.1016/j.omtn.2024.102351, 文章通过md模拟,发现aso与mRNA的结合不仅取决于常规的碱基互补原则,还和 mRNA三维结构比如发夹环的动态可及性和三联碱基对的形成有关。这给未来aso的设计 提出了很有启发的一套思路,毕竟字面上的序列在实际分子层面,还是三维的。 在蛋白质的计算结构生物学开展的如此热烈的背景下,会有更多有价值的工作出现。
7.
哪有情可长 (2026-04-30 16:48):
#paper Replication timing uncovers a two-compartment nuclear architecture of interphase euchromatin. Plant Cell, 20 February 2026,doi.org/10.1093/plcell/koag042, 细胞核内的染色质并非杂乱无章,而是呈现出高度有序的三维结构。在哺乳动物中,基因组复制受到严格的时间调控,即DNA复制时间。早复制区域通常富含活跃基因,位于细胞核内部;晚复制区域则富含异染色质,倾向于定位在核周边。这种时间上的有序性与空间上的区室化紧密相关,共同维持着细胞的身份和功能。研究者先用5-乙炔基-2′-脱氧尿苷标记复制中的DNA,再把玉米根尖细胞核分成G1、早S、中S、晚S和G2。随后做复制测序,并把既有数据重新比对到B73v5基因组,再用Repliscan给各区段标注主要复制时段。这样,他们不只得到早、中、晚三类大框架,还看见常染色质内部频繁出现早S和中S交替的小片段。作者对根尖细胞核做高通量染色体构象捕获,早S区域多对应正EV、负IS,说明更偏长程接触;中S区域多对应负EV、正IS,说明更偏局部打包。更重要的是,这些转折常和RT边界对齐。后续作者有说明同类之间的配对关系,发现早S对早S,中S对中S,晚S对晚S比其他跨类别的接触更常见。此外,将空间结果喝组织差异,分子特征一起交叉验证,后续作者为5号染色体短臂设计早S和中S寡核苷酸探针,做三维荧光原位杂交(3D-FISH)。单探针实验显示,早S信号更常落在染色较弱、较松的区域,中S信号更常落在染色较强、较密的区域。
H S Akram, E E Wear, L Mickelson-Young, Z M Turpin, L Hanley-Bowdoin, W F Thompson, L Concia, H W Bass
Abstract:
Abstract
Genome replication is temporally regulated during S phase, with specific genomic regions replicating at defined times in a process that is known as replication timing (RT). Based on 3D cytology in replicating nuclei, we previously proposed a model in which maize euchromatin is subdivided into subcompartments distinguished by chromatin condensation and RT. However, whether this compartmentalization reflects a general nuclear architecture that persists throughout the cell cycle was unclear. To test this model, we conducted two orthogonal assays—Hi-C for genome-wide interaction data… >>>
Abstract<br> Genome replication is temporally regulated during S phase, with specific genomic regions replicating at defined times in a process that is known as replication timing (RT). Based on 3D cytology in replicating nuclei, we previously proposed a model in which maize euchromatin is subdivided into subcompartments distinguished by chromatin condensation and RT. However, whether this compartmentalization reflects a general nuclear architecture that persists throughout the cell cycle was unclear. To test this model, we conducted two orthogonal assays—Hi-C for genome-wide interaction data and 3D FISH for direct visualization of chromatin organization in maize (Zea mays L.). Hi-C analyses revealed distinct patterns of early-S regions exhibited negative insulation scores with long-range contacts, whereas middle-S regions showed the opposite. Early-S regions showed the strongest correlation with epigenomic signatures of open, transcriptionally active chromatin. 3D oligo FISH painting confirmed that early-S and middle-S replicating regions occupy adjacent but largely non-overlapping nucleoplasmic sub-territories throughout interphase stages, including G1. Together, our findings redefine the maize euchromatin “A” compartment as two spatially distinct subcompartments derived from high-frequency RT transitions between early and middle S along the linear genome. These findings have implications for chromatin-templated processes and underscore the importance of RT as a defining feature of genome organization. <<<
8.
林海onrush (2026-04-30 01:30):
#paper, DFT: A Dual-branch Framework of Fluctuation and Trend for Stock Price Prediction",DOI:https://arxiv.org/abs/2411.06065,这篇论文提出 DFT(Dual-branch Framework of Fluctuation and Trend),用于股票价格/收益预测:作者认为传统模型容易混合股票的长期趋势与短期波动,且对跨时间因果关系建模不足,因此将股票表征分解为趋势分支和波动分支,分别用不同顺序建模时间相关性与股票间相关性;其中时间建模采用 RWKV 以保留时序因果性,股票相关性则用自注意力机制捕捉。实验在 CSI300、CSI800 和 S&P500 上显示,DFT 在 IC、RankIC、年化收益 AR 和信息比率 IR 等指标上显著优于 LSTM、Informer、StockMixer、MASTER 等基线,消融实验也表明趋势/波动分解、双分支结构和时间因果建模都是性能提升的关键。
arXiv, 9 Nov 2024.
Chengqi Dong, Zhiyuan Cao, S Kevin Zhou, Jia Liu
Abstract:
Stock price prediction is of significant importance in quantitative investment. Existing approaches encounter two primary issues: First, they often overlook the crucial role of capturing short-term stock fluctuations for predicting high-volatility returns. Second, mainstream methods, relying on graphs or attention mechanisms, inadequately explore the temporal relationships among stocks, often blurring distinctions in their characteristics over time and the causal relationships before and after. However, the high volatility of stocks and the intricate market correlations are crucial to accurat… >>>
Stock price prediction is of significant importance in quantitative investment. Existing approaches encounter two primary issues: First, they often overlook the crucial role of capturing short-term stock fluctuations for predicting high-volatility returns. Second, mainstream methods, relying on graphs or attention mechanisms, inadequately explore the temporal relationships among stocks, often blurring distinctions in their characteristics over time and the causal relationships before and after. However, the high volatility of stocks and the intricate market correlations are crucial to accurately predicting stock prices. To address these challenges, we propose a Dual-branch Framework of Fluctuation and Trend (DFT), which decomposes stocks into trend and fluctuation components. By employing a carefully design decomposition module, DFT effectively extracts short-term fluctuations and trend information from stocks while explicitly modeling temporal variations and causal correlations. Our extensive experiments demonstrate that DFT outperforms existing methods across multiple metrics, including a 300% improvement in ranking metrics and a 400% improvement in portfolio-based indicators. Through detailed experiments, we provide valuable insights into different roles of trends and fluctuations in stock price prediction. <<<
9.
小年 (2026-04-29 22:34):
#paper doi:10.1038/s41467-026-66923-9,In silico discovery of nanobody binders to a G-protein coupled receptor using AlphaFold-Multimer(Nature Communications, 2026, 17:4621)该研究针对 G 蛋白偶联受体(GPCR)纳米抗体传统发现依赖免疫文库筛选、耗时费力且成功率低的技术瓶颈,开发基于“AlphaFold-Multimer(AF-M)”的计算预测筛选策略,实现 GPCR 纳米抗体的精准从头发现。研究团队首先通过分析已知纳米抗体 - GPCR 复合物结构,建立 AF-M 输出参数(如界面接触数、pLDDT 评分、界面能量)的判别模型,能有效区分结合型与非结合型纳米抗体 - GPCR 配对;随后对含 10,000 个纳米抗体的虚拟文库进行前瞻性筛选,成功鉴定出对 MRGPRX2(介导假性过敏炎症与瘙痒的关键 GPCR 靶点)具有 20-200nM 亲和力的特异性结合纳米抗体,且通过细胞实验验证其能有效抑制 MRGPRX2 介导的肥大细胞脱颗粒信号通路。该方法无需实验免疫或文库构建,大幅缩短纳米抗体开发周期,为 GPCR 等膜蛋白靶点的快速抗体工具开发及治疗性抗体设计提供了高效计算范式,尤其适用于传统方法难以靶向的 GPCR 亚型与构象态。
Edward P. Harvey, Jeffrey S. Smith, Joseph D. Hurley, Alyana Granados, Ernst W. Schmid, Jason G. Liang-Lin, Steffanie Paul, Emily M. Meara, Matthew P. Ferguson, Victor G. Calvillo-Miranda ... >>>
Edward P. Harvey, Jeffrey S. Smith, Joseph D. Hurley, Alyana Granados, Ernst W. Schmid, Jason G. Liang-Lin, Steffanie Paul, Emily M. Meara, Matthew P. Ferguson, Victor G. Calvillo-Miranda, Debora S. Marks, Johannes C. Walter, Andrew C. Kruse, Katherine J. Susa <<<
Abstract:
ABSTRACT

Antibodies are central mediators of the adaptive immune response, and they are powerful research tools and therapeutics. Antibody discovery requires substantial experimental effort, such as immunization campaigns or
in vitro
library screening. Predicting antibody-antigen binding
a priori
remains challenging. However, recent machine learning methods raise the possibility of
in silico
antibody discovery, bypassing or reducing initial experimental bottlenecks. Here, we report a virtual screen using AlphaFold-Multimer (AF-M) that pros… >>>
ABSTRACT<br> <br> Antibodies are central mediators of the adaptive immune response, and they are powerful research tools and therapeutics. Antibody discovery requires substantial experimental effort, such as immunization campaigns or<br> <i>in vitro</i><br> library screening. Predicting antibody-antigen binding<br> <i>a priori</i><br> remains challenging. However, recent machine learning methods raise the possibility of<br> <i>in silico</i><br> antibody discovery, bypassing or reducing initial experimental bottlenecks. Here, we report a virtual screen using AlphaFold-Multimer (AF-M) that prospectively identified nanobody binders to MRGPRX2, a G protein-coupled receptor (GPCR) and therapeutic target for the treatment of pseudoallergic inflammation and itch. Using previously reported nanobody-GPCR structures, we identified a set of AF-M outputs that effectively discriminate between interacting and non-interacting nanobody-GPCR pairs. We used these outputs to perform a prospective<br> <i>in silico</i><br> screen, identified nanobodies that bind MRGPRX2 with high affinity, and confirmed activity in signaling and functional cellular assays. Our results provide a proof of concept for fully computational antibody discovery pipelines that can circumvent laboratory experiments.<br> <<<
10.
李翛然 (2026-04-29 22:26):
#paper doi:10.1038/s41592-026-03070-5 Systematically decoding pathological morphologies and molecular profiles with unified multimodal embedding. Nat Methods (2026).  这篇文章介绍了一个名为 Multi-Embed​ 的多模态学习框架,旨在统一整合与分析病理形态学特征(如全切片病理图像)和多层分子特征(如基因组、转录组、蛋白组等),以深入解析疾病机制。 核心背景与问题: 当前,病理图像与多组学数据的联合分析面临挑战。现有方法要么依赖监督学习而缺乏可解释性,要么基于小规模数据而泛化能力不足。因此,Multi-Embed​ 的目标是构建一个既具备高可解释性,又能适用于大规模临床数据的统一框架。 方法概述: Multi-Embed 的核心是构建一个统一的多模态嵌入空间。它从病理图像中提取多尺度形态特征,并从样本中获取多层分子数据。通过自监督对比学习,模型使同一样本的形态与分子表示在嵌入空间中相互靠近,同时通过重构机制保留各模态自身特性。最终得到的统一嵌入表示可用于多种下游任务。
11.
白鸟 (2026-04-27 17:08):
#paper doi: 10.1038/s41586-026-10493-9, Polyclonal selection of immune checkpoint mutations in thyroid autoimmunity.2026 该文章通过实验证实自身免疫体细胞突变假说,认为免疫调节基因中的体细胞突变可能使自身反应性淋巴细胞得以逃脱抑制机制。假说受限于当时的技术瓶颈,很难证实。文章利用全外显子组测序以及靶向NanoSeq单分子测序等技术,在甲状腺自身免疫病患者的甲状腺组织中,发现了大量独立B细胞克隆群获得免疫检查点基因的失活突变(不是发生在VDJ区域)。最突出的两个基因是:TNFRSF14和CD274。这些突变不是正常的B细胞受体重组,而是驱动性体细胞突变,突变以失能为主。并通过多克隆级联的方式促进甲状腺自免疾病的发生发展。 机制解释:(甲状腺自身免疫病) - 慢性自身抗原刺激 → B细胞反复进入生发中心(或异位生发中心) → AID高表达 + 大量增殖。 - AID不仅对Ig V区进行正常SHM,还对TNFRSF14(HVEM)、CD274(PD-L1)等检查点基因造成脱靶脱氨基。 - 这些突变导致检查点功能丧失 → B细胞逃避免疫耐受 → 获得生存优势 → 多克隆扩增 → 驱动自身免疫。 - 文章用dNdSshm模型校正正常SHM的干扰,证明这些检查点突变为正选择。 研究意义和启示: 1.为自身免疫病的发病机制提供了强有力证据,“体细胞进化”从癌症领域扩展到常见自身免疫病 2.提出自免体细胞突变“多克隆级联”模型 3.引申关联自身免疫与癌症免疫治疗:PD-1/PD-L1抑制剂等免疫检查点阻断疗法常引发甲状腺炎等自身免疫副作用
Pantelis A. Nicola, Andrew R. J. Lawson, Alexandra Tidd, Juliette Imbert, Yoshihiro Ishida, Luke A. Wylie, Paul A. Scott, Kenny Roberts, Luke M. R. Harvey, Stefanie V. Lensing ... >>>
Pantelis A. Nicola, Andrew R. J. Lawson, Alexandra Tidd, Juliette Imbert, Yoshihiro Ishida, Luke A. Wylie, Paul A. Scott, Kenny Roberts, Luke M. R. Harvey, Stefanie V. Lensing, Wei Cheng, Federico Abascal, Daniel Leongamornlert, Yvette Hooks, Matthew Mayho, Nicole Müller-Sienerth, Sara Widaa, Laura Mincarelli, James Illing, Flavia Peci, Bee Ling Ng, Georgeina L. Jarman, Andrew J. C. Russell, Krishnaa T. A. Mahbubani, Kourosh Saeb-Parsy, Anna L. Paterson, Krishna Chatterjee, Raheleh Rahbari, Omer Ali Bayraktar, Michael R. Stratton, Peter J. Campbell, John A. Tadross, Nadia Schoenmakers, Iñigo Martincorena <<<
12.
颜林林 (2026-04-27 01:07):
#paper doi:10.1016/j.jmoldx.2026.04.002, The Journal of Molecular Diagnostics, 2026, Evaluation of chimerism testing by next generation sequencing using indel markers: Analytical validation and examples of clinical utilization. 这篇文章署名作者来自美国多个州(算得上是个多中心研究),它其实应该是GenDx公司(一家荷兰公司,现已被一家法国公司收购)的移植后基因监测产品的技术验证文章(虽然GenDx否认自己参与分析和结论,只承认自己会在文章接收后支付发表费用)。产品涉及的技术很简单,通过高通量测序,鉴别其中的低频基因组突变(重点看indel,短序列插入或缺失,频率可低至0.5%),以此监测供血者的血细胞占接受输血移植者全血的比例,在术后病程期间的变化。从原理上,这就应该的确比传统STR(基于微卫星,即短串联重复片段,的方法更精确),结论没啥新鲜的(不做到这样,这产品估计也没法卖)。本文通过使用患者样本进行不同比例的掺混,得到用于性能评估的标准样品,由此对技术进行验证(这也算是行业的常规方法),确认了性能的确优于STR方法。此外,为了提升价值(包括讲述临床应用故事),还持续追踪了几位真实的移植患者(最长超过300天),在多个时间点进行采样和检测,确定其各自体内的移植成分比例变化(包括使用流式细胞术做独立验证),并与表型进行关联解释。
Shannon Dutterer, Christle Moore, Maya Giddens, Juliet Smith, Jenifer Williams, Jessica Magwood, Jeane Silva, Cathi Murphey, Valia Bravo-Egana
13.
惊鸿 (2026-04-24 11:41):
#paper DOI: 10.1056/NEJMoa2309149 英文标题: CRISPR-Cas9 In Vivo Gene Editing of KLKB1 for Hereditary Angioedema 发表时间: 2024年2月1日(《新英格兰医学杂志》正式发表) 核心突破 本研究首次在人体内应用CRISPR-Cas9基因编辑技术,靶向KLKB1基因(编码激肽释放酶原),成功治疗了遗传性血管性水肿(HAE)。这是一种罕见的、可能危及生命的遗传病,患者因C1抑制剂缺乏导致缓激肽过度生成,引发反复发作的皮肤和黏膜水肿。 技术亮点 体内一次性编辑:通过单次静脉输注携带CRISPR-Cas9系统的脂质纳米颗粒(LNP),直接在肝脏中敲除KLKB1基因,从而持久降低激肽释放酶原水平,从源头上减少缓激肽的生成。 高效且持久:治疗后,97%的患者在观察期内疾病未再发作,血浆激肽释放酶原水平显著且持续下降,避免了传统疗法需长期定期给药的负担。 良好安全性:未报告与治疗相关的严重不良事件,初步验证了体内CRISPR编辑在HAE患者中的安全性。 局限与展望 长期随访需完善:目前报道的随访时间仍有限,其长期安全性(如潜在脱靶效应)和疗效持久性需数年观察。 适用范围:该策略主要适用于HAE类型Ⅰ/Ⅱ(C1抑制剂缺乏型),对其他亚型(如正常C1抑制剂型)的疗效有待探索。 可扩展性:该“肝靶向LNP递送+基因敲除”平台有望拓展至其他由肝脏特异性蛋白异常引起的遗传病。 总结 这项研究标志着体内CRISPR基因编辑疗法在遗传性血管性水肿治疗中取得了突破性进展,首次实现了通过一次性治疗近乎完全控制疾病发作的目标。它不仅为HAE患者提供了潜在的根治性选择,也进一步验证了体内基因编辑在治疗单基因遗传病中的巨大潜力,为更多罕见病的治疗开辟了新路径。 原文链接:https://doi.org/10.1056/NEJMoa2309149
Hilary J. Longhurst, Karen Lindsay, Remy S. Petersen, Lauré M. Fijen, Padmalal Gurugama, David Maag, James S. Butler, Mrinal Y. Shah, Adele Golden, Yuanxin Xu ... >>>
Hilary J. Longhurst, Karen Lindsay, Remy S. Petersen, Lauré M. Fijen, Padmalal Gurugama, David Maag, James S. Butler, Mrinal Y. Shah, Adele Golden, Yuanxin Xu, Carri Boiselle, Joseph D. Vogel, Ahmed M. Abdelhady, Michael L. Maitland, Mark D. McKee, Jessica Seitzer, Bo W. Han, Samantha Soukamneuth, John Leonard, Laura Sepp-Lorenzino, Eliana D. Clark, David Lebwohl, Danny M. Cohn <<<
14.
徐炳祥 (2026-04-22 22:43):
#paper doi: 10.1186/s13059-026-04004-2 Genome Biology, 2026, Sequence bias in chromatin fragmentation leads to misinterpretation of protein-DNA interactions in vivo。在染色质可及性分析中,一个重要的任务是结合蛋白保护片段长度分布(V plot)与序列模体(motif)判断转录因子的结合情况(足迹分析)。本文通过不同序列片段化方式(DNaseI,MNase和超声打断)片段化染色质或清除了其中所有蛋白组分的裸DNA,发现片段化中存在序列偏好性。这一偏好性可导致在裸DNA中仍能观察到之前被认为是由转录因子结合保护所导致的特异性片段长度分布特征。这些序列偏好不能为移除存在序列偏好的部分碱基等简单生物信息手段所避免。基于本文的结论,基于DNase-seq / ATAC-seq / MNase-seq等实验数据的转录因子足迹分析结果可能是不可靠的,应当慎用。
Laura Durán, Laura Rodríguez, Alicia García, Rodrigo Santamaría, Mar Sánchez, Francisco Antequera
15.
ZĒNG Yíngzhū (Zoo) 曾莹珠 (2026-04-21 09:47):
#paper Sycophantic AI decreases prosocial intentions and promotes dependence. Myra Cheng et al. 2026 https://doi.org/10.1126/ science.aec8352 研究者使用三批数据(日常的建议寻求;Reddit里一个论坛Am I the asshole,众人认同做错了的;伤害自我或他人的行为描述),对11个主流AI模型的谄媚程度进行了分析。AI比人类更多认同用户,多出47-51%。 之后进行了三个实验。 2AI谄媚与否(是vs否)*2AI回答的风格(拟人vs机械)。 2AI谄媚与否(是vs否)*感知回答来源(真人vsAI) 。 被试回忆自身的人际矛盾,2AI谄媚与否(是vs否)。 结果是,谄媚组被试更不愿意道歉,更不会主动改善处境或者改变自身行为。这效应不受AI回答风格或感知回答来源的影响。控制场景和被试人口学变量之后效应还是显著。 被试对谄媚的AI的信任度更高,对它们回答质量的评分更高,更愿意下次再用这些谄媚的模型。 读完之后,我的感受是,个人用户来说,可以特意要求AI指出自己的问题所在,下明确的指令,以及质疑AI。 还有反过来提问,描述问题时,把对方当做自己,换个角度来描述。就类似明明我是要polish稿子,要过的人,但说成我在给别人审批,让AI列出我不让稿子过的原因。
Science, 2026-3-26. DOI: 10.1126/science.aec8352
Myra Cheng, Cinoo Lee, Pranav Khadpe, Sunny Yu, Dyllan Han, Dan Jurafsky
Abstract:

Despite rising concerns about sycophancy—excessive agreement or flattery from artificial intelligence (AI) systems—little is known about its prevalence or consequences. We show that sycophancy is widespread and harmful. Across 11 state-of-the-art models, AI affirmed users’ actions 49% more often than humans, even when queries involved deception, illegality, or other harms. In three preregistered experiments (
N
= 2405), even a single interaction with sycophantic AI reduced participants’ willingness to take responsibility and repair interpersonal conflicts, while increasing th… >>>
<br> Despite rising concerns about sycophancy—excessive agreement or flattery from artificial intelligence (AI) systems—little is known about its prevalence or consequences. We show that sycophancy is widespread and harmful. Across 11 state-of-the-art models, AI affirmed users’ actions 49% more often than humans, even when queries involved deception, illegality, or other harms. In three preregistered experiments (<br> N</i><br> = 2405), even a single interaction with sycophantic AI reduced participants’ willingness to take responsibility and repair interpersonal conflicts, while increasing their conviction that they were right. Despite distorting judgment, sycophantic models were trusted and preferred. This creates perverse incentives for sycophancy to persist: The very feature that causes harm also drives engagement. Our findings underscore the need for design, evaluation, and accountability mechanisms to protect user well-being.<br> <<<
16.
龙海晨 (2026-04-14 19:15):
#paper Ma W. Artificial intelligence and multi-omics nominate TAZ as an insomnia-related diagnostic and druggable target for Parkinson's disease patients. Front Aging Neurosci. 2026 Feb 4;18:1727472. doi: 10.3389/fnagi.2026.1727472. PMID: 41717220; PMCID: PMC12913377. 这是一篇人工智能与生物信息相结合用于筛选药物靶点的文章。作者从 GEO 和 Genecard 数据库下载帕金森病 (PD) 的数据,以及失眠相关基因列表。用DEG 鉴定和 WGCNA 分析筛选基因,用KEGG 和 GO 功能富集分析,用机器学习的方法进一步筛选,验证的到中心基因TAZ,又在单细胞中进行分析与TAZ相关的,之后进行相关的药物筛选DrugRefLector筛选药物,接着用AutoDock 识别潜在结合位点。用QPCR检测PD细胞中TAZ mRNA表达显著升高。利用人工智能和多组学在分子水平上强调了失眠和 PD 进展之间的机制联系。
Wenjing Ma
Abstract:

Background
Insomnia is one of the most common non-motor comorbidities of Parkinson’s disease (PD) and often before the onset of motor symptoms. Identifying the molecular mechanisms of insomnia may facilitate the early diagnosis of PD and contribute to therapeutic development.


Methods

Five human PD substantia nigra (SN) bulk-seq datasets (GSE20141, GSE7621, GSE20164, GSE20163, and GSE20333), with an insomnia-related gene list, were acquired from GEO and Genecard databases. First, the integration of GSE20141 and GSE7621 was analyzed to identify insomnia-related D… >>>
<br> Background<br> Insomnia is one of the most common non-motor comorbidities of Parkinson’s disease (PD) and often before the onset of motor symptoms. Identifying the molecular mechanisms of insomnia may facilitate the early diagnosis of PD and contribute to therapeutic development.<br> <br> <br> Methods<br> <br> Five human PD substantia nigra (SN) bulk-seq datasets (GSE20141, GSE7621, GSE20164, GSE20163, and GSE20333), with an insomnia-related gene list, were acquired from GEO and Genecard databases. First, the integration of GSE20141 and GSE7621 was analyzed to identify insomnia-related DEGs using limma and the WGCNA framework. GSE20164 and GSE20163 combination were used as a training set for insomnia-related hub gene recognition. Furthermore, the aforementioned four datasets, along with an independent validation set (GSE20333), were cross-validated for insomnia-related diagnostic model construction. The human PD-SN single-cell profile (GSE140231) was utilized for exploring the mechanisms underlying the heterogeneity of insomnia-related hub genes in spatial and temporal contexts. Furthermore, a cutting-edge artificial intelligence (AI)-driven framework (DrugRefLector) and molecular docking techniques was used to identify an optimal agent for the treatment of PD based on the GSE20164 and GSE20163 integrated dataset. Finally, an<br> <i>in vitro</i><br> q-RT-PCR experiment was conducted to estimate the targeted gene expression.<br> <br> <br> <br> Results<br> TAZ (WWTR1) is associated with the increased expression of insomnia-related diagnostic markers linked to PD pathogenesis, mainly in neurons, and has excellent predictive performance for PD diagnosis. Furthermore, BRD-K97481123 can be considered as a potential therapeutic agent for the treatment of PD by targeting TAZ.<br> <br> <br> Conclusion<br> By integrating AI pipelines and multi-omics, our study first traced TAZ mechanisms in PD pathogenesis and elaborated on TAZ’s predictive and druggable potential for PD patients.<br> <<<
17.
DeDe宝 (2026-04-02 02:27):
#paper Integration of Memory and Sensory Information in Skilled Sequence Production. The Journal of Neuroscience.2026 本研究聚焦序列动作中记忆与感觉信息的动态整合机制。当人类完成一系列动作时,需要整合之前的经验(内部记忆)和当前的刺激(外部感觉信息),但此前的研究孤立探讨这两个重要因素。本研究采用离散序列产生任务(Discrete Sequence Production Task, DSP)范式探究上述两个因素的影响,要求被试用右手五指重复固定长度的离散按键序列。研究操纵线索数量(外部感觉信息)和序列重复性(内部记忆),并构建证据累积计算模型拟合行为数据。研究发现:学习初期被试整合记忆与感觉线索;熟练且完全可预测时转为纯记忆驱动;引入违背引发不确定性后,重新整合两类信息。模型证实序列动作可并行独立计划接下来三次动作,且序列记忆遇冲突快速失活、需连续一致线索才缓慢重激活。该研究揭示了大脑灵活整合内外信息以生成精准序列动作的核心规律。
Amin Nazerzadeh, Medha Porwal, J. Andrew Pruszynski, Jörn Diedrichsen
Abstract:

Sequential movements rely on two information sources: external sensory cues and internal memory representations. Although often both sources jointly drive sequential behavior, previous research has primarily examined them in isolation. To address this, we trained participants (
n
= 26, 15F) to perform sequences of rapid finger presses in response to numerical cues. Sensory influence was measured by varying the number of visible cues, and memory influence was determined by comparing repeating and random sequences. Early in learning, participants integrated sensory and memor… >>>
<br> Sequential movements rely on two information sources: external sensory cues and internal memory representations. Although often both sources jointly drive sequential behavior, previous research has primarily examined them in isolation. To address this, we trained participants (<br> <i>n</i><br> = 26, 15F) to perform sequences of rapid finger presses in response to numerical cues. Sensory influence was measured by varying the number of visible cues, and memory influence was determined by comparing repeating and random sequences. Early in learning, participants integrated sensory and memory information: repeating sequences were performed more quickly when more cues were visible. After learning, when repeating sequences were predictable with certainty, participants relied solely on memory and ignored sensory cues. However, when this certainty was manipulated by introducing occasional violations within repeating sequences, participants reverted to integrating memory with sensory cues. We propose a computational model that successfully predicted both speed and accuracy of individual presses. Critically, this model relied on the assumption that multiple movements are planned independently of each other. This independence assumption was then validated by examining response patterns to isolated violations in repeating sequences. Finally, we provide evidence into how sequence memories can be flexibly deactivated and reactivated in response to these violations. Together, these results reveal how brain dynamically integrates sensory and memory information to produce sequences of movements.<br> <<<
18.
刘昊辰 (2026-04-01 15:10):
#paper THE CDE METHOD A TECHNIQUE IN FUNCTIONAL EQUATIONS. 本文提出了一种解决中学数学竞赛中函数方程问题的新的较为通用的方法(CDE方法),并给出3个相关引理,28个例题和若干习题。此方法在最近几年的数学竞赛中已经有所应用,也被AoPS论坛讨论过,值得关注中学数学竞赛动向的人学习。下载地址:https://arxiv.org/abs/1901.11131
arXiv, 2019-01-30T22:42:29Z. DOI: 10.48550/arXiv.1901.11131
Athanasios Kontogeorgis, Rafail Tsiamis
Abstract:
In this article we present an extremely effective and relatively unknown approach to solving functional equations that appear in mathematical competitions. We aim to explain the philosophy of this novel method through numerous examples, which also highlight how this idea can be paired with other useful techniques to crack challenging problems.
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