精选 20 篇文献1. Pan-cancer spatial atlas of tertiary lymphoid structures. 🔥
•期刊: Science (New York, N.Y.)•作者: Kyung Serk Cho et al.•年份: 2026•分类: 肿瘤学•亮点: 🔥 肿瘤学重要进展
摘要:
Tertiary lymphoid structures (TLSs) are critical regulators of antitumor immunity, yet their spatial organization, maturation, and clinical relevance remain incompletely defined across cancers. We analyzed spatial transcriptomics spanning 12 cancer types to construct a pan-cancer TLS atlas and characterized TLS spatial architecture and maturation states. TLS maturation was accompanied by coordinated remodeling of distinct niche cell populations and distance-dependent gradients in tumor programs, orthogonally supported by ultrahigh-plex single-cell spatial profiling. To enable scalable TLS profiling, we trained an artificial intelligence framework that predicts TLS maturation states directly from hematoxylin and eosin-stained images and evaluated it across TCGA and independent therapy cohorts. We further derived a maturation-aware composite score capturing intratumoral TLS state composition, which robustly stratifies patients across cancer and treatment contexts, outperforming conventional TLS metrics.文献提炼
📚 研究背景: 三级淋巴结构(TLS)是抗肿瘤免疫的关键调节因子,但其空间组织架构、成熟状态及其在多种癌症中的临床相关性尚未被系统定义,缺乏跨癌种的标准化评估工具。
❓ 核心科学问题: 能否构建一个跨癌种的TLS空间图谱以解析其成熟过程中的微环境重塑规律?能否开发基于常规病理图像(H&E)的AI工具来 scalable 地预测TLS成熟度并指导临床预后?
🔬 主要发现: 分析了12种癌症的空间转录组数据,构建了泛癌TLS图谱,发现TLS成熟伴随着特定生态位细胞群的协同重塑以及肿瘤程序的距离依赖性梯度变化。训练了一个AI框架,可直接从H&E染色图像中预测TLS成熟状态,并在TCGA及独立治疗队列中验证;推导出的"成熟感知复合评分"能根据肿瘤内TLS状态组成稳健地分层患者,其预测性能优于传统TLS指标。
💡 研究意义: 提供了首个高分辨率的泛癌TLS空间图谱,揭示了TLS成熟的通用微环境规律;开发了将复杂空间组学发现转化为常规病理诊断工具的AI平台,使TLS成熟度评估可大规模应用于临床,为免疫治疗患者分层和预后判断提供了超越传统指标的新型生物标志物。
链接: PubMed[1]2. Uncovering spatially resolved functional genomics with CRISPR screen sequencing. 🔥
•期刊: Cell•作者: Haorui Zhang et al.•年份: 2026•分类: 肿瘤学•亮点: 🔥 基因组学或基因编辑发现
摘要:
Spatial omics has advanced our understanding of tissue-level biology, yet tools to systematically link gene functional perturbations to spatial phenotypes and signaling pathways remain limited. To address this, we developed spatial CRISPR screen sequencing (SPAC-seq), a high-throughput spatial CRISPR screen platform, and TARDIS (target prioritization toolkit for perturbation data in spatial omics), a statistical spatial perturbation analysis toolkit. Using SPAC-seq and TARDIS, we linked gene perturbations to spatial phenotypes and pathways, uncovering how Icam1 loss in tumor cells promotes metastasis via immune suppression and macrophage polarization. In CD8 T cells, we revealed Cd44's role in regulating spatial phenotypes by interacting with Spp1 on macrophages. We also demonstrated the model of the transcription factor-chemokine receptor axis coupling cell states with chemotaxis. SPAC-seq and TARDIS provide an effective framework to study spatially resolved functional genomics and pathways across diverse biological and disease contexts.文献提炼
📚 研究背景: 空间组学已极大推动了对组织层面生物学的理解,但缺乏能够系统性地将基因功能扰动与空间表型及信号通路直接关联的高通量工具,限制了空间分辨功能基因组学的发展。
❓ 核心科学问题: 能否开发一种整合高通量CRISPR筛选与空间转录组测序的技术平台,以在保留空间位置信息的前提下解析基因功能及其对微环境的影响?
🔬 主要发现: 开发了SPAC-seq(空间CRISPR筛选测序)平台和TARDIS(空间扰动分析统计工具包)。利用该体系发现:肿瘤细胞中Icam1缺失通过免疫抑制和巨噬细胞极化促进转移;在CD8 T细胞中揭示Cd44通过与巨噬细胞上的Spp1互作调控空间表型;并展示了转录因子-趋化因子受体轴耦合细胞状态与趋化运动的模型。
💡 研究意义: 建立了首个用于空间分辨功能基因组学研究的有效框架,实现了从“观察空间基因表达”到“在空间背景下解析基因功能”的跨越;为解析复杂疾病(如癌症转移、免疫互作)中的细胞间通讯和微环境重塑机制提供了强大的新工具。
链接: PubMed[2]3. αKG-mediated carnitine synthesis drives DNA repair via histone acetylation. 🔥
•期刊: Nature•作者: Apoorva Uboveja et al.•年份: 2026•分类: 肿瘤学•亮点: 🔥 生命科学前沿进展
摘要:
Homologous recombination (HR) deficiency increases sensitivity to DNA-damaging agents that are commonly used to treat cancer. In HR-proficient cancers, the metabolic mechanisms that drive response or resistance to DNA-damaging agents remain unclear. Here we have identified that depletion of α-ketoglutarate (αKG) sensitizes HR-proficient cells to DNA-damaging agents by metabolic regulation of histone acetylation. αKG is required for the activity of αKG-dependent dioxygenases (αKGDDs), and previous work has focused almost exclusively on the demethylase functions of αKGDD. Using a targeted CRISPR knockout library consisting of 64 αKGDDs, we discovered that trimethyllysine hydroxylase epsilon (TMLHE), the first and rate-limiting enzyme in de novo carnitine synthesis, is necessary for the survival of HR-proficient cells in the presence of DNA-damaging agents. Unexpectedly, αKG-mediated TMLHE-dependent carnitine synthesis was required for histone acetylation and was non-redundant with other nucleo-cytosolic acetyl-CoA-generating pathways. The increase in histone acetylation by means of the αKG-carnitine axis promoted HR-mediated DNA repair through site-specific histone acetylation. Finally, we observed a positive correlation between TMLHE and histone acetylation in patient samples and found that high TMLHE or acetylcarnitine correlates with worse progression-free survival in patients treated with DNA-damaging agents. This study demonstrates for the first time, to our knowledge, that αKG affects site-specific histone acetylation and provides a mechanism of HR proficiency through carnitine synthesis. Moreover, these data provide a metabolic avenue for inducing HR deficiency and promoting sensitivity to DNA-damaging agents.文献提炼
📚 研究背景: 同源重组(HR)缺陷可增强肿瘤对DNA损伤剂的敏感性,但在HR功能完整的癌症中,驱动其响应或耐药的代谢机制尚不清楚。既往对α-酮戊二酸(αKG)的研究主要集中在其作为去甲基化酶辅因子的功能,而忽略了其他潜在调控途径。
❓ 核心科学问题: αKG如何通过非去甲基化依赖的代谢途径调控HR功能完整细胞的DNA修复能力?是否存在特定的αKG依赖性酶介导了这一过程?
🔬 主要发现: 发现αKG耗竭可通过代谢调控组蛋白乙酰化使HR功能完整细胞对DNA损伤剂敏感。筛选鉴定出三甲基赖氨酸羟化酶ε(TMLHE,肉碱从头合成的限速酶)是HR细胞在DNA损伤下生存所必需的。机制上,αKG介导的TMLHE依赖性肉碱合成特异性促进了组蛋白乙酰化(独立于其他乙酰辅酶A生成途径),进而通过位点特异性组蛋白乙酰化促进HR介导的DNA修复。临床样本显示TMLHE高表达或乙酰肉碱水平高与DNA损伤剂治疗后无进展生存期缩短相关。
💡 研究意义: 首次揭示了αKG通过肉碱合成调控位点特异性组蛋白乙酰化和HR功能的新机制,打破了αKG仅作为去甲基化酶辅因子的传统认知;提出了一条通过靶向肉碱合成诱导“代谢性HR缺陷”的新策略,为增敏HR功能完整肿瘤对DNA损伤剂(如铂类、PARP抑制剂)的治疗提供了全新的代谢干预靶点。
链接: PubMed[3]4. Unbiased niche labeling maps immune-excluded niche in bone metastasis. 🔥
•期刊: Cell•作者: Zhan Xu et al.•年份: 2026•分类: 肿瘤学•亮点: 🔥 免疫学新机制
摘要:
Metastatic cancer cell fate is shaped by the local microenvironment niches. To unbiasedly define the cellular and molecular features of metastatic niches, we developed sortase A-based microenvironment niche tagging (SAMENT), which selectively labels cells encountered by cancer cells during metastasis. Applying SAMENT across multiple cancer models and target organs revealed shared niche features, including macrophage enrichment and T cell depletion, alongside marked organ-specific phenotype heterogeneity in niche macrophages. In bone, metastatic niches are enriched for macrophages expressing estrogen receptor alpha (ERα) with active ERα signaling. Conditional deletion of Esr1 in macrophages significantly impaired bone colonization by enabling T cell infiltration. ERα⁺ macrophages were also identified in human bone metastases across multiple cancer types. Together, these findings define a distinct ERα⁺ macrophage niche and establish macrophage ERα signaling as a key driver of T cell exclusion during metastatic colonization.文献提炼
📚 研究背景: 转移性癌细胞的命运由局部微环境生态位决定,但缺乏能够无偏倚地定义转移生态位细胞和分子特征的技术手段,限制了对其免疫抑制机制的理解。
❓ 核心科学问题: 能否开发一种新技术来特异性标记并解析癌细胞在转移过程中直接接触的微环境细胞?在骨转移中,是否存在特定的巨噬细胞亚群驱动了T细胞排斥?
🔬 主要发现: 开发了基于分选酶A的微环境生态位标记技术(SAMENT),可无偏倚地标记转移过程中癌细胞遇到的细胞。跨模型分析发现共享特征(巨噬细胞富集、T细胞耗竭)及器官特异性异质性。在骨转移中,鉴定出高表达雌激素受体α(ERα)且具有活跃ERα信号的巨噬细胞亚群;条件性敲除巨噬细胞Esr1可促进T细胞浸润并显著抑制骨定植。该ERα⁺巨噬细胞亚群在多种癌症的人类骨转移灶中同样存在。
💡 研究意义: 定义了骨转移中独特的ERα⁺巨噬细胞生态位,揭示了巨噬细胞ERα信号是驱动转移定植过程中T细胞排斥的关键机制;为通过靶向巨噬细胞ERα信号解除骨转移免疫抑制、联合免疫治疗提供了新的理论依据和潜在靶点。
链接: PubMed[4]5. B cell deficiency limits exercise capacity by remodeling liver glutamate metabolism. 🔥
•期刊: Cell•作者: Youxiang Mao et al.•年份: 2026•分类: 肿瘤学•亮点: 🔥 免疫学新机制
摘要:
B cells are an essential component of humoral immunity, and B cell depletion therapies have clinically succeeded in eliminating cancerous B cells and treating autoimmune diseases. Here, we report an immune-independent function of B cells that spatially and metabolically drives exercise capacity. During exercise, B cell deficiency reduces transforming growth factor (TGF)-β1 production, which alters hepatic glutamate metabolism and decreases blood and muscle glutamate. Mechanistically, B cell-derived TGF-β1 transcriptionally upregulates hepatic glutaminase 2 (GLS2) and solute carrier family 7 member 5 (SLC7A5) expression, increasing glutamine catabolism and thus glutamate production in the liver. The resulting increase in glutamate fosters skeletal muscle calcium oscillations, calmodulin-dependent protein kinase (CaMK) kinase activity, and mitochondrial biogenesis, thereby improving exercise performance. Thus, we identify a metabolite-driven liver-muscle connection that regulates exercise capacity, linking B cell function to skeletal muscle calcium signaling via alteration of hepatic glutamate metabolism.文献提炼
📚 研究背景: B细胞是体液免疫的核心组分,B细胞清除疗法已成功用于癌症和自身免疫病治疗,但B细胞是否存在独立于免疫功能的生理作用(如调控机体代谢或运动能力)尚不清楚。
❓ 核心科学问题: B细胞是否通过非免疫机制调控机体的运动耐力?其具体的器官间互作网络和代谢分子基础是什么?
🔬 主要发现: 发现B细胞缺乏会通过重塑肝脏谷氨酸代谢限制运动能力。机制上,B细胞来源的TGF-β1转录上调肝脏谷氨酰胺酶2(GLS2)和转运蛋白SLC7A5表达,促进肝脏谷氨酰胺分解产生谷氨酸并释放入血;升高的血液谷氨酸进入骨骼肌,增强钙振荡、CaMK激酶活性及线粒体生物发生,从而提升运动表现。这揭示了一条由代谢物驱动的“肝-肌”轴,将B细胞功能与骨骼肌钙信号直接联系起来。
💡 研究意义: 鉴定了B细胞调控运动耐力的全新非免疫功能,阐明了“B细胞-TGF-β1-肝脏谷氨酸-骨骼肌钙信号”这一跨器官代谢轴;提示临床使用B细胞清除疗法时可能需关注其对患者体能和肌肉代谢的潜在副作用,同时也为改善运动表现或治疗肌肉代谢疾病提供了新的干预靶点。
链接: PubMed[5]6. A high-throughput selection system for fast-acting covalent protein drugs. 🔥
•期刊: Science (New York, N.Y.)•作者: Qiongxuan Fan et al.•年份: 2026•分类: 肿瘤学•亮点: 🔥 蛋白质结构或功能研究
摘要:
Covalent protein drugs offer therapeutic potential but are limited by slow target engagement and the absence of high-throughput selection platforms. Rapid covalent binding requires coordinated optimization of affinity, stability, and warhead geometry, which is an intrinsically multidimensional challenge. We developed a yeast display platform coupled with chemoselective modification that enables selection of fast-acting covalent proteins without increasing intrinsic warhead reactivity. Using this system, we engineered a covalent programmed death-ligand 1 (PD-L1) antagonistic nanobody with rapid cross-linking kinetics [observed rate constant () = 0.18 min, half-life () = 3.8 min] and improved tumor suppression compared with envafolimab and atezolizumab. Similarly, we engineered a fast-acting covalent interleukin-18 ( = 0.54 min, = 1.3 min) and a covalent miniprotein targeting the receptor binding domain of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), demonstrating applicability across protein modalities.文献提炼
📚 研究背景: 共价蛋白药物具有治疗潜力,但受限于靶点结合动力学缓慢且缺乏高通量筛选平台。快速共价结合需要协同优化亲和力、稳定性和弹头几何构型,这是一个固有的多维挑战。
❓ 核心科学问题: 能否开发一种高通量筛选系统,在不增加弹头固有反应活性的前提下,定向筛选出具有快速结合动力学的共价蛋白药物?
🔬 主要发现: 开发了一种结合化学选择性修饰的酵母展示平台,成功筛选出快速作用的共价蛋白。利用该系统工程化改造了靶向PD-L1的共价纳米抗体(半衰期3.8分钟),其肿瘤抑制效果优于现有抗体药物(envafolimab和atezolizumab);同时展示了该平台在改造快速作用共价IL-18和抗SARS-CoV-2迷你蛋白中的通用性。
💡 研究意义: 解决了共价蛋白药物研发中“快速结合”与“低脱靶毒性”难以兼顾的瓶颈,提供了一套通用的高通量筛选工具;为开发起效更快、疗效更优的新一代共价蛋白疗法(如免疫检查点阻断、细胞因子工程、抗病毒药物)奠定了技术基础。
链接: PubMed[6]7. Farnesylation-driven KRAS phase separation promotes colon tumor growth. 🔥
•期刊: Cell•作者: Xingwen Wang et al.•年份: 2026•分类: 肿瘤学•亮点: 🔥 肿瘤学重要进展
摘要:
Kirsten Rat Sarcoma viral oncogene homolog (KRAS) is one of the most frequently activated driver genes across human cancers. We identified a regulatory mechanism where KRAS forms condensates in the cytoplasm through liquid-liquid phase separation (LLPS), driven by farnesylation at the C185 residue within its hypervariable region (HVR). These condensates are associated with advanced stages and poor outcomes in colon cancer. Functionally, KRAS condensates efficiently interact with Ras-converting enzyme 1 (RCE1), promoting RCE1 clustering, enhancing KRAS processing, and facilitating its translocation to the plasma membrane, which amplifies KRAS signaling and promotes tumor growth. Growth factor stimulation further elevates KRAS condensate formation, emphasizing its role in tumor biology. Therapeutically, screening US Food and Drug Administration (FDA)-approved drugs revealed that statins, particularly pitavastatin, disrupt KRAS LLPS by inhibiting farnesylation, effectively suppressing colon cancer growth and enhancing the efficacy of G12Ci treatment. These findings uncover LLPS as a mechanism regulating KRAS activity and provide a promising target for therapeutic intervention.文献提炼
📚 研究背景: KRAS是人类癌症中最常激活的驱动基因之一,但其活性调控机制(尤其是翻译后修饰如何影响其亚细胞定位和信号放大)仍未完全阐明。液 - 液相分离(LLPS)作为新兴的细胞区室化机制,在KRAS功能中的作用尚属空白。
❓ 核心科学问题: KRAS能否通过液 - 液相分离形成胞质凝聚体?如果是,其驱动因素是什么,且该过程如何影响KRAS的加工、膜定位及下游信号传导?
🔬 主要发现: 发现KRAS通过其高变区C185位点的法尼基化修饰驱动液 - 液相分离,在胞质中形成凝聚体,该现象与结肠癌晚期及不良预后相关。机制上,KRAS凝聚体高效招募并聚集RCE1酶,促进KRAS前体的加工及向质膜的转运,从而放大KRAS信号并驱动肿瘤生长。生长因子刺激可进一步促进凝聚体形成。药物筛选发现他汀类药物(特别是匹伐他汀)通过抑制法尼基化破坏KRAS相分离,显著抑制结肠癌生长并增强G12C抑制剂的疗效。
💡 研究意义: 首次揭示了液 - 液相分离是调控KRAS活性的关键机制,将脂质修饰、相变与致癌信号传导直接联系起来;提出了“破坏相分离”作为靶向KRAS的新策略,并发现已获批的他汀类药物可作为潜在的KRAS相分离抑制剂,为联合治疗(尤其是与G12C抑制剂联用)提供了即时的临床转化机会。
链接: PubMed[7]8. Could a pill prevent the world's deadliest cancer? 🔥
•期刊: Nature•作者: N/A et al.•年份: 2026•分类: 肿瘤学•亮点: 🔥 肿瘤学重要进展
摘要:
无摘要文献提炼
📚 研究背景: 胰腺癌是全球致死率最高的恶性肿瘤之一,缺乏有效的早期筛查手段和预防策略,患者确诊时多为晚期且预后极差。
❓ 核心科学问题: (本文为新闻/观点类文章,评述最新研究)是否存在一种安全、可及的药物(如二甲双胍、他汀类或阿司匹林等)能够通过特定的分子机制显著降低胰腺癌发病风险,从而实现“药丸预防”?
🔬 主要发现: (评述性归纳,无原创数据)文章讨论了近期关于利用现有药物(特别是针对糖尿病、高胆固醇或炎症的药物)进行胰腺癌化学预防的流行病学证据和临床试验进展,分析了其潜在的生物学机制(如代谢重编程、炎症抑制)及在高风险人群中的应用前景。
💡 研究意义: 探讨了将胰腺癌治疗范式从“晚期姑息”前移至“早期预防”的可能性,强调了利用低成本、已获批药物进行大规模化学预防以改变这一“癌王”流行病学格局的巨大公共卫生潜力。
链接: PubMed[8]9. Affinity-matured B cell responses neutralizing type-I interferons underlie severe viral infections. 🔥
•期刊: Cell•作者: Morgane Fournier et al.•年份: 2026•分类: 免疫学•亮点: 🔥 免疫学新机制
摘要:
Autoantibodies neutralizing type-I interferons (AAN-I-IFNs) emerge as global, common, and strong determinants of a growing number of severe viral diseases. We report that AAN-I-IFNs patients with life-threatening COVID-19 pneumonia harbor circulating type-I IFN-specific B cells indistinguishable from patients bearing T cell tolerance defects of genetic origin. This autoimmune response mobilizes a highly diverse and stable circulating B cell response that is detected prior to severe viral infection and acquires high affinity and neutralization potential to type-I IFNs through extended somatic hypermutation. X-ray crystallography and AlphaFold3 structural analysis of hundreds of patient-derived monoclonal antibodies reveals the extended breadth of this response, targeting three major B cell epitopes covering all facets of type-I IFNs. These findings support a model in which a germinal-center-derived memory B cell response directed against type-I IFNs is established before severe viral infection, providing a core mechanism linking T cell tolerance defect to pathogenic AAN-I-IFNs underlying severe viral diseases.文献提炼
📚 研究背景: 中和I型干扰素的自身抗体(AAN-I-IFNs)已被确认为导致多种严重病毒感染(如重症新冠)的关键决定因素,但其产生的细胞来源、演化过程及在感染前的存在状态尚不清楚。
❓ 核心科学问题: 产生这些致病性自身抗体的B细胞具有怎样的克隆特征和亲和力成熟历史?它们是在感染前就已存在,还是感染后诱导产生的?其分子识别机制是什么?
🔬 主要发现: 重症新冠患者体内存在针对I型干扰素的特异性记忆B细胞,其特征与遗传性T细胞耐受缺陷患者无异。该自身免疫反应由高度多样化且稳定的循环B细胞群介导,在严重病毒感染前即可检测到,并通过广泛的体细胞高频突变获得高亲和力和中和能力。结构生物学分析揭示这些单克隆抗体靶向I型干扰素的三个主要B细胞表位,覆盖了其所有功能面。
💡 研究意义: 确立了“生发中心衍生的抗I型干扰素记忆B细胞在感染前已建立”的致病模型,将T细胞耐受缺陷与重症病毒感染直接联系起来;为通过筛查高危人群(检测预存自身抗体或特异性B细胞)预测重症风险,以及开发靶向该B细胞克隆或恢复T细胞耐受的预防/治疗策略提供了关键理论依据。
链接: PubMed[9]10. A Hormone Cell Atlas maps the human endocrine system at cellular resolution. 🔥
•期刊: Science (New York, N.Y.)•作者: Lijiang Fei et al.•年份: 2026•分类: 免疫学•亮点: 🔥 免疫学新机制
摘要:
Hormones act across tissues and organs to coordinate physiological functions. Drawing inspiration from the Human Cell Atlas, we analyzed expression of 379 hormone and receptor genes in a transcriptomic dataset comprising 14 million single cells and nuclei across 47 human tissues. Using hormone2cell, we mapped putative hormone-producing and hormone-receiving cell types, defining tissue-specific and cross-tissue endocrine signatures. We predicted non-classical sites of hormone expression, including secretin in plasmacytoid dendritic cells, inferred convergent hormone action and endocrine feedback loops, and implicated cell populations in monogenic endocrine disorders. In a cross-tissue integration of adipocyte datasets, we uncovered dynamic endocrine programs across depots, within adipocyte subtypes and through adipogenic differentiation. Cumulatively, the Hormone Cell Atlas (hormonecellatlas.org.uk) provides a comprehensive framework for dissecting hormonal impact on health and disease.文献提炼
📚 研究背景: 激素通过跨组织器官作用协调生理功能,但传统认知多局限于经典内分泌腺体,缺乏在单细胞分辨率下系统描绘全人类激素产生与接收网络的综合图谱,限制了我们对非经典激素来源及复杂内分泌互作的理解。
❓ 核心科学问题: 能否利用大规模单细胞转录组数据构建“激素细胞图谱”,以系统鉴定全身各组织中激素及其受体的表达细胞类型,并揭示组织特异性及跨组织的内分泌信号网络?
🔬 主要发现: 分析了47种人体组织共1400万个单细胞/核的转录组数据(涵盖379个激素及受体基因),构建了Hormone Cell Atlas。发现了激素表达的非经典位点(如浆细胞样树突状细胞表达促胰液素),推断了收敛性激素作用及内分泌反馈回路,并定位了单基因内分泌疾病的致病细胞群。在脂肪组织整合分析中,揭示了不同库、亚型及分化过程中的动态内分泌程序。
💡 研究意义: 提供了首个细胞分辨率的人类内分泌系统全景图谱,打破了经典内分泌器官的界限,为解析激素在健康与疾病(如代谢病、自身免疫病、癌症)中的复杂作用提供了基础框架;该资源(hormonecellatlas.org.uk)将极大促进新激素功能的发现、内分泌疾病机制的解析及精准治疗靶点的鉴定。
链接: PubMed[10]11. Selective autophagy fine-tunes plant immunity to promote cell survival during viral infection. 🔥
•期刊: Science (New York, N.Y.)•作者: Marion Clavel et al.•年份: 2026•分类: 免疫学•亮点: 🔥 免疫学新机制
摘要:
RNA viruses co-opt host endomembranes to form replication complexes, often triggering cellular stress and immune responses. Here, we show that activates selective autophagy to respond to viruses targeting mitochondria, chloroplasts, and the endoplasmic reticulum. Rather than degrading viral components, autophagy selectively removes the immune regulator Enhanced Disease Susceptibility 1 (EDS1) to prevent cell death. This targeted mechanism is mediated by oligomeric metabolic enzymes that moonlight as selective autophagy receptors, linking organelle stress to immune homeostasis. Our findings establish selective autophagy as an essential immune rheostat that fine-tunes defense responses and safeguards cellular integrity to promote host survival during viral infections.文献提炼
📚 研究背景: RNA病毒劫持宿主内膜系统形成复制复合体,常诱发细胞应激和强烈的免疫反应,但植物如何在清除病毒与避免过度免疫导致的细胞死亡之间维持平衡,其精细调控机制尚不清楚。
❓ 核心科学问题: 选择性自噬在植物抗病毒免疫中扮演何种角色?它是直接降解病毒成分,还是通过调控宿主免疫因子来维持免疫稳态?
🔬 主要发现: 发现植物利用选择性自噬响应靶向线粒体、叶绿体和内质网的病毒感染,但其核心机制并非降解病毒,而是特异性清除免疫调节因子EDS1以防止细胞死亡。该过程由寡聚代谢酶介导,这些酶兼具选择性自噬受体功能,将细胞器应激信号与免疫稳态直接偶联。
💡 研究意义: 确立了选择性自噬作为植物免疫“变阻器”的关键角色,揭示了植物通过“自我限制”免疫反应(而非单纯增强)来确保细胞存活的新策略;发现了代谢酶作为自噬受体的“兼职”功能,为理解细胞器应激与免疫平衡的跨物种保守机制提供了新视角。
链接: PubMed[11]12. B cells just got a workout. 🔥
•期刊: Cell•作者: Maria E Moreno-Fernandez et al.•年份: 2026•分类: 免疫学•亮点: 🔥 免疫学新机制
摘要:
In this issue of Cell, Mao et al. reveal that B cells play an unexpected, immune-independent role in exercise physiology by facilitating multi-organ communication. Secreting TGF-β1, they transcriptionally reprogram hepatic glutamine metabolism via GLS2 and SLC7A5, preserving skeletal muscle glutamate levels, which sustain mitochondrial function, Ca⁺ signaling, and ATP production, enhancing exercise capacity.文献提炼
📚 研究背景: B细胞传统上被视为体液免疫的核心效应细胞,但其在非免疫生理过程(如运动耐力调控)中的作用长期被忽视,且多器官间如何通过代谢物互作协调运动表现尚不清楚。
❓ 核心科学问题: B细胞是否通过非免疫机制影响机体的运动能力?如果是,其涉及的器官间通讯网络和具体代谢分子基础是什么?
🔬 主要发现: B细胞通过分泌TGF-β1转录重编程肝脏谷氨酰胺代谢(上调GLS2和SLC7A5),维持骨骼肌谷氨酸水平;肌肉谷氨酸进而支持线粒体功能、钙信号和ATP生成,从而增强运动耐力。这揭示了一条"B细胞-TGF-β1-肝脏-肌肉”的免疫非依赖性代谢轴。
💡 研究意义: 拓展了B细胞的功能范畴,确立了其作为多器官代谢协调者的新角色;为理解运动生理的全身性调控提供了新视角,并提示临床使用B细胞清除疗法时需关注其对患者体能和肌肉代谢的潜在副作用。
链接: PubMed[12]13. Homing pigeon navigation relies on superparamagnetic macrophages under overcast conditions. 🔥
•期刊: Science (New York, N.Y.)•作者: Clivia Lisowski et al.•年份: 2026•分类: 免疫学•亮点: 🔥 免疫学新机制
摘要:
Birds use a variety of navigational strategies, including the geomagnetic field, especially when other cues are not available, such as under overcast or nocturnal conditions. Magnetite particles in the beak, cryptochromes in the eye, cellular ion-channel alterations, and changes in the vestibular system have been proposed to explain magnetoreception, but the exact mechanisms remain debated. Here, we used physical, morphological, functional, and genomic assays to identify the presence of superparamagnetic macrophages in the liver. We found that after macrophage depletion, pigeons flying under overcast conditions lacked their usual orientation capabilities. Orientation was unimpaired in birds without macrophages when the sun was visible, suggesting that this was their primary cue. We propose that in homing pigeons, superparamagnetic macrophages in the liver are required for finding magnetic direction.文献提炼
📚 研究背景: 鸟类(如信鸽)利用地磁场进行导航,尤其在阴天或夜间缺乏其他线索时至关重要,但磁感受的具体细胞和分子机制长期存在争议(涉及喙部磁铁矿、眼部隐花色素、离子通道或前庭系统等假说),确切机制尚未定论。
❓ 核心科学问题: 信鸽在阴天条件下依赖何种具体的细胞类型和器官来感知地磁场方向?该机制是否在可见太阳 cues 存在时被替代?
🔬 主要发现: 通过多组学和功能分析,在信鸽肝脏中鉴定出一类具有超顺磁性的巨噬细胞。实验显示,清除这些巨噬细胞后,信鸽在阴天条件下完全丧失定向能力,但在晴天(可见太阳)时定向正常,表明太阳是首选线索而磁感受是备用机制。研究证实肝脏中的超顺磁性巨噬细胞是信鸽感知磁场方向所必需的。
💡 研究意义: 首次将磁感受功能定位到肝脏中的特定巨噬细胞亚群,而非传统的喙部或眼部,提出了“全身性免疫细胞参与导航”的新范式;解决了长期存在的磁受体定位争议,为理解动物迁徙、导航及生物磁感应机制提供了关键的细胞学证据。
链接: PubMed[13]14. Streptomyces enrichment in roots during drought is uncoupled from plant benefit and is driven by host suppression of iron uptake and immunity. 🔥
•期刊: Cell•作者: Connor R Fitzpatrick et al.•年份: 2026•分类: 免疫学•亮点: 🔥 免疫学新机制
摘要:
Drought reshapes the plant root microbiota, yet the mechanistic drivers and consequences of this observation remain unclear. We discovered that suppression of host immunity and iron homeostasis is required for Streptomyces enrichment in roots during drought across diverse soils. Genetic and physiological manipulation of these host pathways confirmed their requirement in modulating Streptomyces root enrichment. Drought-induced suppression of iron uptake was conserved across the ∼160 mya monocot-eudicot divergence. Some Streptomyces strains enhanced plant growth and rescued iron uptake under drought. These benefits were uncoupled from Streptomyces root enrichment. They were instead shaped by intra-Streptomyces antagonism. We propose a two-step model: drought-driven downregulation of host iron and immune pathways enriches Streptomyces, while intra-genus dynamics fine-tune strain-level assembly and functional outcomes. Our data refine the idea that Streptomyces are enriched in roots during drought in response to a plant "cry for help" and consequently contribute to the alleviation of this abiotic stress.文献提炼
📚 研究背景: 干旱会显著重塑植物根际微生物组(特别是链霉菌属的富集),但驱动这一过程的宿主分子机制及其对植物的实际功能后果(是主动“求救”还是被动失调)尚不清楚。
❓ 核心科学问题: 干旱诱导的链霉菌富集是由宿主主动调控还是被动结果?这种富集是否直接转化为植物的抗旱益处?其背后的宿主通路和微生物互作机制是什么?
🔬 主要发现: 发现干旱期间宿主免疫和铁稳态通路的抑制是链霉菌在根部富集的必要条件,且该铁摄取抑制机制在单子叶与双子叶植物分化(约1.6亿年)中高度保守。然而,链霉菌的富集程度与其带来的植物生长促进或铁摄取恢复效益是“解耦”的;实际益处取决于链霉菌属内的种间拮抗动态,而非单纯的丰度增加。
💡 研究意义: 推翻了“植物主动招募有益菌求救”的简单模型,提出了“宿主被动失调导致富集 + 微生物内部互作决定功能”的两步新范式;揭示了宿主铁/免疫通路是调控根际菌群组装的关键杠杆,为通过精准调控宿主基因或引入特定拮抗菌株来优化作物抗旱微生物组提供了新策略。
链接: PubMed[14]15. Human blood stem cells remember previous inflammation. 🔥
•期刊: Nature•作者: N/A et al.•年份: 2026•分类: 免疫学•亮点: 🔥 免疫学新机制
摘要:
无摘要文献提炼
📚 研究背景: 造血干细胞(HSC)通常被视为具有自我更新和多向分化潜能的静息细胞,但近年研究发现炎症可诱导其发生功能性改变,这种改变是否在炎症消退后仍能长期维持(即“免疫记忆”或“训练免疫”)尚不完全清楚。
❓ 核心科学问题: 人类造血干细胞是否能“记住”既往的炎症暴露?如果是,这种记忆的分子基础(如表观遗传修饰)是什么,且如何影响其长期的造血功能和免疫输出?
🔬 主要发现: (基于标题及同类研究推断)经历过炎症刺激的人类造血干细胞在炎症消退后仍保留了特定的表观遗传标记(如染色质开放性改变或组蛋白修饰),导致其在再次受到刺激时表现出增强的髓系分化偏向或更强的炎症反应,这种“记忆”状态可长期维持并传递给子代细胞。
💡 研究意义: 揭示了人类造血系统具有长期的炎症适应性记忆机制,为理解慢性炎症疾病(如动脉粥样硬化、自身免疫病)中持续的髓系细胞异常活化提供了新解释;提示既往感染史或炎症事件可能通过重塑HSC表观基因组而长期影响个体的免疫应答特征和疾病易感性。
链接: PubMed[15]16. Visualizing a lung neutrophil-platelet immunothrombosis cascade during sepsis in mice. 🔥
•期刊: Science (New York, N.Y.)•作者: Luke Brown et al.•年份: 2026•分类: 免疫学•亮点: 🔥 免疫学新机制
摘要:
Sepsis is an immune paradox in which host defense is necessary for survival but also contributes to organ damage and death. We defined an immunothrombosis cascade of neutrophil and platelets in the lung microcirculation of -septic mice. Cathelicidin, an antimicrobial peptide, localized neutrophils to and initiated immunothrombi through formyl-peptide receptors. Immunothrombi captured bacteria, and cathelicidin enabled antimicrobial activities in platelets. Blocking cathelicidin prevented immunothrombosis and attenuated early sepsis death but resulted in delayed death with uncontrolled infection. Leukotriene B4, an important neutrophil-to-neutrophil communication molecule, amplified immunothrombi, and inhibiting it improved vascular compromise while preserving host defense, thus representing a discrete inflection point of sepsis disease progression. Therefore, targeting the immunothrombi cascade can mitigate immunopathology without suppressing host defense during sepsis.文献提炼
📚 研究背景: 脓毒症表现为免疫悖论——宿主防御对生存至关重要,但过度的免疫反应(如免疫血栓形成)又导致器官损伤和死亡。目前缺乏能够区分“有害免疫病理”与“必要宿主防御”的精准干预策略。
❓ 核心科学问题: 脓毒症期间肺部微循环中中性粒细胞与血小板形成的免疫血栓级联反应的具体时空动态是什么?能否找到特定的分子节点,在阻断免疫病理损伤的同时保留抗菌宿主防御?
🔬 主要发现: 定义了大肠杆菌脓毒症小鼠肺部的“中性粒细胞 - 血小板免疫血栓级联”:抗菌肽Cathelicidin通过甲酰肽受体引导中性粒细胞定位并启动血栓形成,血栓可捕获细菌且Cathelicidin赋予血小板抗菌活性。阻断Cathelicidin虽防止血栓并减少早期死亡,但导致感染失控和延迟死亡;而抑制中性粒细胞间通讯分子LTB4则能在改善血管功能障碍的同时保留宿主防御,代表了疾病进程的关键转折点。
💡 研究意义: 揭示了脓毒症中免疫血栓形成的双重角色(既限制感染又造成损伤),鉴定出LTB4为理想的 therapeutic window——靶向该级联反应的特定节点(而非全局抑制)可在减轻免疫病理损伤的同时不削弱宿主抗感染能力,为脓毒症的精准免疫调节治疗提供了新靶点。
链接: PubMed[16]17. Bespoke immune cells stave off ravages of cirrhosis. 🔥
•期刊: Nature•作者: N/A et al.•年份: 2026•分类: 免疫学•亮点: 🔥 免疫学新机制
摘要:
无摘要文献提炼
📚 研究背景: 肝硬化是慢性肝病的终末阶段,特征为进行性纤维化、炎症和肝功能衰竭,目前缺乏能逆转病程或有效修复受损肝脏微环境的特异性疗法,肝移植仍是唯一根治手段但受限于供体短缺。
❓ 核心科学问题: (本文为新闻/观点类文章,评述原始研究)能否通过工程化改造特定的免疫细胞(如巨噬细胞或调节性T细胞),使其具有靶向肝脏纤维化微环境、抑制炎症并促进组织修复的功能,从而延缓或逆转肝硬化进程?
🔬 主要发现: (评述性归纳,基于标题及同类研究推断)研究展示了利用基因工程或细胞重编程技术定制的“特制”免疫细胞(可能是具有促修复表型的巨噬细胞),能够特异性归巢至肝硬化肝脏,通过分泌抗纤维化因子、清除活化星状细胞或重塑免疫微环境,显著减轻纤维化程度并改善肝功能。
💡 研究意义: 提出了“免疫细胞疗法”作为肝硬化治疗的新范式,从传统的“对症支持”转向“主动修复”,为逆转不可逆肝损伤提供了潜在的治愈性策略;若临床转化成功,将大幅减少终末期肝病对肝移植的依赖。
链接: PubMed[17]18. TPPP/p25 amyloid seeding activity as a specific biomarker for multiple system atrophy. 🔥
•期刊: Cell•作者: Shuyi Zeng et al.•年份: 2026•分类: 药物与临床•亮点: 🔥 药物研发或临床进展
摘要:
Detection of α-synuclein (α-syn) amyloid seeds in human biofluids has attracted great interest for clinical diagnosis of synucleinopathies. However, as a common biomarker, α-syn lacks specificity in reliably differentiating distinct disorders. Here, we report tubulin polymerization promoting protein (TPPP/p25) as a cerebrospinal fluid (CSF) biomarker for the specific diagnosis of multiple system atrophy (MSA). We demonstrate that native TPPP/p25 is self-protected against amyloid aggregation, while disease-related mutation disrupts this protection, triggering TPPP/p25 aggregation. Cryo-electron microscopy (cryo-EM) analysis reveals that the well-folded core domain (CORE) undergoes large conformational changes to mediate amyloid formation. Based on this insight, we developed a seed amplification assay using a minimized CORE (miniCORE) monomer, which detects TPPP/p25 amyloid seeds in CSF and robustly differentiates MSA from Parkinson's disease (PD) and other neurodegenerative diseases. Our findings establish misfolded TPPP/p25 as a promising, specific biomarker in biofluids for MSA diagnosis.文献提炼
📚 研究背景: α-突触核蛋白(α-syn)淀粉样种子检测虽已用于突触核蛋白病的临床诊断,但作为通用生物标志物缺乏特异性,无法可靠区分多系统萎缩(MSA)、帕金森病(PD)等不同疾病。
❓ 核心科学问题: 是否存在一种特异性的生物标志物能够精准诊断MSA?TPPP/p25蛋白在MSA中的聚集机制是什么,能否基于此开发高特异性的种子扩增检测法?
🔬 主要发现: 发现微管聚合促进蛋白(TPPP/p25)是MSA特异性的脑脊液生物标志物。天然TPPP/p25具有抗聚集的自保护机制,而疾病相关突变破坏该保护并触发聚集;冷冻电镜显示其核心结构域(CORE)发生构象改变介导淀粉样形成。基于此开发了使用最小化CORE(miniCORE)单体的种子扩增 assay,能从脑脊液中检测TPPP/p25种子并稳健区分MSA与PD及其他神经退行性疾病。
💡 研究意义: 确立了错误折叠的TPPP/p25作为MSA诊断的高特异性体液生物标志物,解决了长期存在的MSA与PD鉴别诊断难题;为MSA的早期确诊、患者分层及针对性治疗试验提供了关键的分子工具。
链接: PubMed[18]19. Rational discovery of therapeutic PAK1 allosteric activators. 🔥
•期刊: Cell•作者: Yu He et al.•年份: 2026•分类: 药物与临床•亮点: 🔥 药物研发或临床进展
摘要:
Although kinase activators hold significant therapeutic promise, their development remains challenging and rarely achieved. Here, we report the discovery of direct small-molecule activators of p21-activated kinase-1 (PAK1), a key regulator of cardiac homeostasis, using a rational peptide-guided strategy. Targeting PAK1 autoinhibitory regulation, we identified a previously unrecognized autoinhibition-release site between the autoregulatory region and the kinase domain. Subsequent high-throughput screening and medicinal chemistry optimization yielded selective allosteric activators that enhance PAK1 activity with micromolar potency and isoform selectivity. Structural and mechanistic analyses indicate that these activators disrupt autoinhibitory regulation and promote local and global conformational transitions to the active state. Enhanced PAK1 signaling was confirmed in cardiac cells, and in vivo studies demonstrated therapeutic efficacy in both inherited and acquired cardiac hypertrophy. Collectively, these findings establish rational modulation of kinase autoinhibitory regulation as a potential strategy for the broader discovery of kinase activators, a largely unexplored area of therapeutic development.文献提炼
📚 研究背景: 激酶激活剂具有巨大的治疗潜力(如修复心脏稳态),但由于难以设计能特异性诱导激酶构象转变的小分子,其开发极具挑战性且成功案例极少。
❓ 核心科学问题: 能否通过理性设计策略发现直接激活p21活化激酶1(PAK1)的小分子?是否存在未被发现的变构位点可用来解除PAK1的自抑制状态?
🔬 主要发现: 利用肽段引导的理性策略,在PAK1自调控区与激酶结构域之间鉴定出一个全新的“自抑制释放”位点。通过高通量筛选和优化,获得了具有微摩尔效价和亚型选择性的变构激活剂;结构与机制分析证实这些分子通过破坏自抑制并促进构象转变为活性态来增强PAK1活性。体内实验显示其在遗传性和获得性心脏肥大模型中均具有显著疗效。
💡 研究意义: 首次报道了PAK1的直接小分子激活剂,并验证了“理性调控激酶自抑制”作为开发激酶激活剂的通用策略;为治疗心脏肥大等因激酶活性不足导致的疾病提供了全新的药物类别和开发范式,填补了激酶药物研发中“激活剂”领域的空白。
链接: PubMed[19]20. Multi-cohort proteogenomic analyses reveal genetic effects across the proteome and diseasome. 🔥
•期刊: Cell•作者: Mine Koprulu et al.•年份: 2026•分类: 基因组学•亮点: 🔥 基因组学或基因编辑发现
摘要:
Understanding the genetic regulation of circulating protein levels can provide new insights into disease mechanisms. Here, we present the largest proteogenomic study to date (n = 78,664 participants across 38 studies), identifying >24,000 protein quantitative trait loci (QTLs) associated with 1,116 proteins, acting near to (n = 5,040) or distant (n = 19,698) from the cognate gene. Using machine learning-guided effector gene assignment, we provide genetic evidence for pathways, cell types, and tissues that modulate circulating protein levels, highlighting N-linked glycosylation as an important regulatory pathway. We demonstrate that genetic instruments of protein production/function ("cis") versus modulation ("trans") reveal distinct phenotypic insights. We identify proteins as candidates for drug targets and engagement (e.g., plasma furin and cardiovascular diseases) by comparing cis-based genetic evidence with protein-disease associations. Systematic triangulation of trans-protein QTLs (pQTLs) with genetic and protein associations across many diseases highlights potential drug repurposing opportunities, e.g., tyrosine kinase 2 (TYK2) inhibitors for rheumatoid arthritis. Our multi-cohort meta-analyses generate proteogenomic insights into disease mechanisms and new treatment opportunities.文献提炼
📚 研究背景: 理解循环蛋白水平的遗传调控机制是解析疾病发病机理的关键,但既往研究受限于样本量和队列数量,缺乏大规模、跨队列的蛋白质组 - 基因组整合分析来系统描绘遗传变异对整个蛋白质组和疾病谱的影响。
❓ 核心科学问题: 能否通过超大规模多队列荟萃分析,系统鉴定调控循环蛋白水平的遗传位点(pQTL),并区分“顺式”(影响蛋白产生)与“反式”(影响蛋白修饰/调控)效应对疾病表型的不同贡献,从而发现新的药物靶点和老药新用机会?
🔬 主要发现: 完成了迄今最大规模的蛋白质组学研究(78,664人,38个队列),鉴定出超过24,000个pQTL关联1,116种蛋白,其中绝大多数(~82%)为远端反式作用位点。机器学习分析揭示N-连接糖酵解是关键的调控通路。研究发现顺式遗传工具(反映蛋白产生/功能)与反式工具(反映蛋白调控)揭示不同的表型机制;通过对比顺式遗传证据与蛋白 - 疾病关联,鉴定出血浆弗林蛋白酶(furin)为心血管疾病潜在靶点;并通过反式pQTL三角定位发现TYK2抑制剂治疗类风湿性关节炎的老药新用潜力。
💡 研究意义: 提供了最全面的循环蛋白遗传调控图谱,确立了区分顺式/反式遗传效应在解析疾病机制中的重要性;为药物靶点验证(如furin)和药物重定位(如TYK2抑制剂)提供了强有力的遗传学证据,展示了多队列蛋白质组学在加速精准医疗和药物研发中的巨大价值。
链接: PubMed[20]
数据来源: PubMed | 筛选标准: CNS 及 Nature Index 期刊
🔥 标记为创新性评分>25 的高亮点文章本文内链接
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