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Integrative single-cell analysis of human colorectal cancer reveals patient stratification with distinct immune evasion mechanisms 人类结直肠癌的单细胞综合分析揭示了具有不同免疫逃避机制的患者分层。
IF 23.5 1区 医学 Q1 ONCOLOGY Pub Date : 2024-08-15 DOI: 10.1038/s43018-024-00807-z
Xiaojing Chu, Xiangjie Li, Yu Zhang, Guohui Dang, Yuhui Miao, Wenbin Xu, Jinyu Wang, Zemin Zhang, Sijin Cheng
The tumor microenvironment (TME) considerably influences colorectal cancer (CRC) progression, therapeutic response and clinical outcome, but studies of interindividual heterogeneities of the TME in CRC are lacking. Here, by integrating human colorectal single-cell transcriptomic data from approximately 200 donors, we comprehensively characterized transcriptional remodeling in the TME compared to noncancer tissues and identified a rare tumor-specific subset of endothelial cells with T cell recruitment potential. The large sample size enabled us to stratify patients based on their TME heterogeneity, revealing divergent TME subtypes in which cancer cells exploit different immune evasion mechanisms. Additionally, by associating single-cell transcriptional profiling with risk genes identified by genome-wide association studies, we determined that stromal cells are major effector cell types in CRC genetic susceptibility. In summary, our results provide valuable insights into CRC pathogenesis and might help with the development of personalized immune therapies. Cheng and colleagues performed an integrative analysis of human colorectal cancer samples to characterize the tumor microenvironment (TME) and stratify patients according to their heterogeneous TMEs, which exploit different immune evasion mechanisms.
肿瘤微环境(TME)在很大程度上影响着结直肠癌(CRC)的进展、治疗反应和临床预后,但目前还缺乏对 CRC 中肿瘤微环境个体间异质性的研究。在这里,通过整合来自约 200 名供体的人类结直肠单细胞转录组数据,我们全面描述了 TME 与非癌症组织相比的转录重塑特征,并鉴定了具有 T 细胞招募潜能的罕见肿瘤特异性内皮细胞亚群。庞大的样本量使我们能够根据 TME 的异质性对患者进行分层,揭示出不同的 TME 亚型,在这些亚型中,癌细胞利用了不同的免疫逃避机制。此外,通过将单细胞转录谱分析与全基因组关联研究确定的风险基因联系起来,我们确定基质细胞是 CRC 遗传易感性的主要效应细胞类型。总之,我们的研究结果为了解 CRC 的发病机制提供了宝贵的信息,并可能有助于开发个性化的免疫疗法。
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引用次数: 0
Enhanced precision in immunotherapy 提高免疫疗法的精确度
IF 23.5 1区 医学 Q1 ONCOLOGY Pub Date : 2024-08-12 DOI: 10.1038/s43018-024-00802-4
Erik N. Bergstrom, Ludmil B. Alexandrov
Recent advancements in targeted immune checkpoint blockade (ICB) therapy have reshaped cancer treatment paradigms. However, many patients do not respond, highlighting the need for robust biomarkers. A study now introduces an approach using multi-omics data and machine learning to improve patient selection for ICB therapy, offering more effective treatment.
靶向免疫检查点阻断疗法(ICB)的最新进展重塑了癌症治疗模式。然而,许多患者并没有响应,这凸显了对可靠生物标志物的需求。现在的一项研究介绍了一种利用多组学数据和机器学习来改进ICB疗法患者选择的方法,从而提供更有效的治疗。
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引用次数: 0
SOS1 inhibitor combinations overcome KRAS inhibitor resistance SOS1 抑制剂组合克服了 KRAS 抑制剂的耐药性
IF 23.5 1区 医学 Q1 ONCOLOGY Pub Date : 2024-08-12 DOI: 10.1038/s43018-024-00801-5
Combining SOS1 inhibitors with KRAS inhibitors improved the depth and durability of response in lung and colorectal cancer models. Restoration of response was observed in preclinical models rendered resistant to KRAS inhibitors. These results highlight the potential of SOS1 inhibitors to broaden the response to KRAS inhibitors in the clinic.
在肺癌和结直肠癌模型中,将 SOS1 抑制剂与 KRAS 抑制剂结合使用可提高反应的深度和持久性。在对 KRAS 抑制剂耐药的临床前模型中也观察到了反应的恢复。这些结果凸显了 SOS1 抑制剂在临床上扩大对 KRAS 抑制剂反应的潜力。
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引用次数: 0
Co-targeting SOS1 enhances the antitumor effects of KRASG12C inhibitors by addressing intrinsic and acquired resistance 通过解决内在和获得性抗药性问题,联合靶向 SOS1 可增强 KRASG12C 抑制剂的抗肿瘤效果。
IF 23.5 1区 医学 Q1 ONCOLOGY Pub Date : 2024-08-05 DOI: 10.1038/s43018-024-00800-6
Venu Thatikonda, Hengyu Lyu, Sabine Jurado, Kaja Kostyrko, Christopher A. Bristow, Christoph Albrecht, Donat Alpar, Heribert Arnhof, Oliver Bergner, Karin Bosch, Ningping Feng, Sisi Gao, Daniel Gerlach, Michael Gmachl, Melanie Hinkel, Simone Lieb, Astrid Jeschko, Annette A. Machado, Thomas Madensky, Ethan D. Marszalek, Mikhila Mahendra, Gabriella Melo-Zainzinger, Jessica M. Molkentine, Philipp A. Jaeger, David H. Peng, Robyn L. Schenk, Alexey Sorokin, Sandra Strauss, Francesca Trapani, Scott Kopetz, Christopher P. Vellano, Mark Petronczki, Norbert Kraut, Timothy P. Heffernan, Joseph R. Marszalek, Mark Pearson, Irene C. Waizenegger, Marco H. Hofmann
Combination approaches are needed to strengthen and extend the clinical response to KRASG12C inhibitors (KRASG12Ci). Here, we assessed the antitumor responses of KRASG12C mutant lung and colorectal cancer models to combination treatment with a SOS1 inhibitor (SOS1i), BI-3406, plus the KRASG12C inhibitor, adagrasib. We found that responses to BI-3406 plus adagrasib were stronger than to adagrasib alone, comparable to adagrasib with SHP2 (SHP2i) or EGFR inhibitors and correlated with stronger suppression of RAS-MAPK signaling. BI-3406 plus adagrasib treatment also delayed the emergence of acquired resistance and elicited antitumor responses from adagrasib-resistant models. Resistance to KRASG12Ci seemed to be driven by upregulation of MRAS activity, which both SOS1i and SHP2i were found to potently inhibit. Knockdown of SHOC2, a MRAS complex partner, partially restored response to KRASG12Ci treatment. These results suggest KRASG12C plus SOS1i to be a promising strategy for treating both KRASG12Ci naive and relapsed KRASG12C-mutant tumors. Hofmann and colleagues describe the mechanism underlying the therapeutic benefit of combinatorial use of SOS1 and KRAS-G12C inhibitors in the context of KRAS-G12C mutant-driven lung and colorectal cancer.
要加强和扩大 KRASG12C 抑制剂(KRASG12Ci)的临床反应,需要采用联合方法。在此,我们评估了 KRASG12C 突变肺癌和结直肠癌模型对 SOS1 抑制剂(SOS1i)BI-3406 加 KRASG12C 抑制剂 adagrasib 联合治疗的抗肿瘤反应。我们发现,BI-3406 加 adagrasib 的反应比单用 adagrasib 更强,与 adagrasib 与 SHP2(SHP2i)或表皮生长因子受体抑制剂的反应相当,并且与 RAS-MAPK 信号的更强抑制相关。BI-3406 加 adagrasib 治疗还能延缓获得性耐药性的出现,并激发 adagrasib 耐药模型的抗肿瘤反应。对 KRASG12Ci 的耐药性似乎是由 MRAS 活性的上调驱动的,而 SOS1i 和 SHP2i 都能有效抑制 MRAS 活性。MRAS复合物伙伴SHOC2的敲除部分恢复了对KRASG12Ci治疗的反应。这些结果表明,KRASG12C 加 SOS1i 是一种治疗 KRASG12Ci 初治和复发 KRASG12C 突变肿瘤的有效策略。
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引用次数: 0
γδ T cells as critical anti-tumor immune effectors γδ T 细胞是关键的抗肿瘤免疫效应因子。
IF 23.5 1区 医学 Q1 ONCOLOGY Pub Date : 2024-07-26 DOI: 10.1038/s43018-024-00798-x
Marcel Arias-Badia, Ryan Chang, Lawrence Fong
While the effector cells that mediate anti-tumor immunity have historically been attributed to αβ T cells and natural killer cells, γδ T cells are now being recognized as a complementary mechanism mediating tumor rejection. γδ T cells possess a host of functions ranging from antigen presentation to regulatory function and, importantly, have critical roles in eliciting anti-tumor responses where other immune effectors may be rendered ineffective. Recent discoveries have elucidated how these differing functions are mediated by γδ T cells with specific T cell receptors and spatial distribution. Their relative resistance to mechanisms of dysfunction like T cell exhaustion has spurred the development of therapeutic approaches exploiting γδ T cells, and an improved understanding of these cells should enable more effective immunotherapies. Fong and colleagues provide a Review on γδ T cells as mediators of anti-tumor immunity, discuss their role in the tumor microenvironment and reflect on therapeutic approaches to exploit γδ T cells.
介导抗肿瘤免疫的效应细胞历来被认为是 αβ T 细胞和自然杀伤细胞,而 γδ T 细胞现在被认为是介导肿瘤排斥反应的补充机制。γδT细胞具有从抗原递呈到调节功能的一系列功能,重要的是,在其他免疫效应因子可能失效的情况下,γδT细胞在激发抗肿瘤反应方面发挥着关键作用。最新发现阐明了具有特定 T 细胞受体和空间分布的 γδ T 细胞是如何介导这些不同功能的。γδT细胞对T细胞衰竭等功能障碍机制具有相对抵抗力,这推动了利用γδT细胞的治疗方法的发展。
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引用次数: 0
Inhibiting PI3Kγ in acute myeloid leukemia 在急性髓性白血病中抑制 PI3Kγ。
IF 23.5 1区 医学 Q1 ONCOLOGY Pub Date : 2024-07-24 DOI: 10.1038/s43018-024-00791-4
Aaron J. Stonestrom, Ross L. Levine
The mainly hematologic expression profile of phosphatidylinositol-3-kinase-γ (PI3Kγ) makes it an attractive therapeutic target. Recent work from three independent groups shows that inhibiting PI3Kγ impairs the metabolism and growth of acute myeloid leukemia cells — a finding that justifies further mechanistic and clinical exploration.
磷脂酰肌醇-3-激酶-γ(PI3Kγ)的主要血液学表达特征使其成为一个有吸引力的治疗靶点。三个独立研究小组的最新研究表明,抑制 PI3Kγ 会影响急性髓性白血病细胞的新陈代谢和生长--这一发现为进一步的机理研究和临床探索提供了依据。
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引用次数: 0
AI-assisted detection of lymph node metastases safely reduces costs and time 人工智能辅助检测淋巴结转移可安全地降低成本和缩短时间。
IF 23.5 1区 医学 Q1 ONCOLOGY Pub Date : 2024-07-24 DOI: 10.1038/s43018-024-00795-0
Our non-randomized single-center clinical trial demonstrates the safety, cost-saving and time-saving potential of artificial intelligence (AI) assistance in the detection of breast cancer metastases in sentinel lymph nodes. AI assistance shows important benefits for pathologists and the laboratory workflow, which are needed as cancer incidence and diagnostics continue to rise.
我们的非随机单中心临床试验证明了人工智能(AI)辅助检测前哨淋巴结乳腺癌转移的安全性、节约成本和时间的潜力。人工智能辅助技术为病理学家和实验室工作流程带来了重要的益处,随着癌症发病率和诊断率的不断上升,我们需要人工智能辅助技术。
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引用次数: 0
Using machine learning to translate tumor dependencies 利用机器学习翻译肿瘤依赖关系。
IF 23.5 1区 医学 Q1 ONCOLOGY Pub Date : 2024-07-23 DOI: 10.1038/s43018-024-00790-5
Cancer dependency maps have accelerated the discovery of essential genes and potential drug targets. Here we used machine learning to build translational dependency maps of patients’ tumors and normal tissue biopsies, which identified oncogenes and synthetic lethalities that are predictive of drug responses and patients’ outcomes.
癌症依赖性图谱加速了重要基因和潜在药物靶点的发现。在这里,我们利用机器学习建立了患者肿瘤和正常组织活检的转化依赖图谱,从而确定了可预测药物反应和患者预后的癌基因和合成致死基因。
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引用次数: 0
Predicting the risk of prostate cancer recurrence through the lens of evolution 从进化的角度预测前列腺癌复发的风险。
IF 23.5 1区 医学 Q1 ONCOLOGY Pub Date : 2024-07-23 DOI: 10.1038/s43018-024-00792-3
Current prostate cancer risk predictors are not able to fully capture a patient’s risk of recurrence at the time of diagnosis. Evolutionary metrics of tumor diversity, based on low-cost sequencing and digital pathology, might provide a new dimension of information to close the gap between prediction and outcome.
目前的前列腺癌风险预测指标无法完全反映患者在诊断时的复发风险。基于低成本测序和数字病理学的肿瘤多样性进化指标可能会提供新的信息维度,缩小预测与结果之间的差距。
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引用次数: 0
Determinants of resistance and response to melanoma therapy 黑色素瘤治疗耐药性和反应的决定因素。
IF 23.5 1区 医学 Q1 ONCOLOGY Pub Date : 2024-07-17 DOI: 10.1038/s43018-024-00794-1
Bailey M. Robertson, Mitchell E. Fane, Ashani T. Weeraratna, Vito W. Rebecca
Metastatic melanoma is among the most enigmatic advanced cancers to clinically manage despite immense progress in the way of available therapeutic options and historic decreases in the melanoma mortality rate. Most patients with metastatic melanoma treated with modern targeted therapies (for example, BRAFV600E/K inhibitors) and/or immune checkpoint blockade (for example, anti-programmed death 1 therapy) will progress, owing to profound tumor cell plasticity fueled by genetic and nongenetic mechanisms and dichotomous host microenvironmental influences. Here we discuss the determinants of tumor heterogeneity, mechanisms of therapy resistance and effective therapy regimens that hold curative promise. Rebecca and colleagues discuss the complex biology of metastatic melanoma, as well as determinants of resistance to therapy and existing and promising therapy strategies.
尽管现有的治疗方案取得了巨大进步,而且黑色素瘤的死亡率也出现了历史性的下降,但转移性黑色素瘤仍是临床治疗中最令人费解的晚期癌症之一。大多数接受现代靶向疗法(如 BRAFV600E/K 抑制剂)和/或免疫检查点阻断疗法(如抗程序性死亡 1疗法)治疗的转移性黑色素瘤患者的病情都会进展,这是由于肿瘤细胞在遗传和非遗传机制以及二元宿主微环境影响下具有极强的可塑性。在此,我们将讨论肿瘤异质性的决定因素、耐药机制以及有望治愈的有效治疗方案。
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Nature cancer
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