科研日报 2026-01-18

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📅 Daily Report - 2026-01-18

今日筛选出 42 条内容,来自 2 个来源

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🤖 今日AI智能总结

🧬 数据前沿

今日焦点

  • 肿瘤微环境重塑机制揭示:多项研究聚焦染色体不稳定性(CIN)如何通过cGAS-趋化因子-髓系细胞轴重塑食管腺癌微环境,以及Claudins与LILRB免疫抑制受体的相互作用促进髓系细胞免疫抑制。

主要方向

  • 肿瘤转移与免疫调控:研究肿瘤细胞簇增强转移能力(调控H3K36组蛋白去甲基化酶KDM2A),HMGB2作为双重免疫调节剂在肝细胞癌中增强CD8+ T细胞功能并抑制肿瘤生长。
  • T细胞功能与分化:探索Dnmt3a依赖的DNA去甲基化如何维持记忆Th1和Tfh细胞的功能,以及PD-1缺失的CD8+ T细胞在慢性刺激下的适应性机制。
  • 肿瘤耐药性机制:揭示AURKA/PHB2信号通路驱动KRAS G12C突变非小细胞肺癌对KRAS G12C抑制剂获得性耐药。

技术亮点

  • 单细胞测序应用:广泛应用于胰腺导管腺癌(PDA)细胞系研究,包括药物处理前后、以及用于谱系追踪。
  • 组蛋白修饰与基因组结合分析:ChIP-Seq和ATAC-seq等技术用于解析组蛋白修饰和染色质可及性对基因表达及细胞功能的影响。

🧪 博客更新

今日焦点: 新型AI框架CellAtria首次实现单细胞RNA测序数据的自动化、标准化分析,大幅提升公共数据集的可及性;同时发现维生素A代谢产物能抑制免疫系统,助肿瘤逃避免疫攻击,并已开发出靶向药物。

主要方向

  • 自动化单细胞RNA测序数据分析与标准化
  • 维生素A代谢产物对肿瘤免疫逃逸的影响及其干预

技术亮点

  • 基于Agentic AI的单细胞数据处理框架
  • 靶向维生素A代谢通路以增强抗肿瘤免疫的药物开发

📚 分类浏览

🧬 数据前沿 (40条)

详细内容(前10条)

1.GSE316752 肿瘤细胞聚集通过调节 H3K36 组蛋白去甲基化酶 KDM2A 增强转移能力 [ChIP-Seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、ChIP-seq、histone、clustering
  • 📝 描述:Contributors : Carolyn Kravitz ; Kiran D Patel ; Emily Wingrove ; Dejian Zhao ; Tang Tang ; Sampada Chande ; Yuchen Huo ; Thomas F Westbrook ; Qin Yan ; Don X NguyenSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Homo sapiensDisseminated tumor cells can form clusters via cell-cell adhesion, which increases their capacity to initiate metastasis. Metastatic clusters are characterized by distinct changes in transcription, suggesting that epigenetic mechanisms underlie their unique phenotypic state. By performingfunctional epigenomic studies in models of non-small-cell lung cancer, we identified the histone H3 lysine 36 (H3K36) demethylase KDM2A as being differentially required for the fitness of metastatic cell clusters. This contextual dependency on KDM2A is predicated by tumor cell-cell aggregation, which specifically induces KDM2A binding to CpG island enriched promoters. At these defined genomic loci, KDM2A maintains H3K36 monomethylation, which preferentially correlates with transcriptional activation. KDM2A directly targets oxidative phosphorylation genes and KDM2A activity is required for optimal mitochondrial respiration and apical cell junction integrity in cell clusters. Consequently, suppressing KDM2A reduces metastatic seeding and colonization in multiple organs, including in the brain. These findings reveal a chromatin regulatory mechanism by which homotypic cell communication instructs the epigenome of disseminated tumor cells to potentiate their metastatic competence.
  • 🔗 查看原文

2.GSE316191 靶向 HMGB2 可作为双重免疫调节剂,通过增强 CD8+ T 细胞功能和抑制肝细胞癌的肿瘤生长发挥作用 [ATAC-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、carcinoma、T cell、ATAC-seq
  • 📝 描述:Contributors : Weifeng Qu ; Guiqi Zhu ; Yinghong ShiSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Mus musculusT cell exhaustion is a critical obstacle for durable treatment response in hepatocellular carcinoma (HCC). Developing drugs that control tumor growth and simultaneously bolster immune function is of great significance. The transcriptional regulator high mobility group box 2 (HMGB2) has emerged as a risk factor in prognosis of HCC. However, the role of HMGB2 in HCC tumor microenvironment (TME) is poorly understood. Here, we discovered HMGB2+ CD8+ T cells as being associated with T cell exhaustion and resistance to anti-PD-1 treatment through single-cell RNA sequencing of human and murine HCC tissues. Mechanistically, HMGB2 impaired the mitochondrial oxidative phosphorylation in CD8+ T cells by increasing the ubiquitination of NRF2, thus reduced the antitumor effector function. In tumor cells, HMGB2 inactivated the interferon-γ (IFN-γ) response through TRIM24/STAT1 pathway, inhibiting susceptibility and recruitment to effector T cells. Tannic acid, a specific inhibitor of HMGB2, synergized with PD-1 antibody to attenuate tumor growth and reverse T cell exhaustion. Collectively, this study revealed that HMGB2, a T cell exhaustion associated molecule, contributed to tumor immune escape by dual action on CD8+ T cells and tumor cells. These data also provided translational insight into synergistic treatment strategies.
  • 🔗 查看原文

3.GSE315942 染色体不稳定性通过 cGAS–趋化因子–髓系轴塑造食管腺癌的肿瘤微环境 [RNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、tumor microenvironment、chemokine、RNA-seq
  • 📝 描述:Contributors : Bruno Beernaert ; Eileen E ParkesSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensChromosomal instability (CIN), a pervasive feature of esophageal adenocarcinoma (EAC), drives tumor aggressiveness and metastasis. CIN stimulates the cGAS–STING pathway, typically linked to anti-tumor immunity. However, despite the high CIN burden in EAC, the cGAS–STING pathway remains largely intact. To address this paradox, we interrogated multiple esophageal cancer models, discovering myeloid-attracting chemokines – with CXCL8 as a prominent hit – as conserved CIN-driven targets in EAC. Using multiplexed immunofluorescence microscopy, we quantified ongoing CIN in human EAC tumors by measuring cGAS-positive micronuclei, validated by whole-genome sequencing. Coupling in situ CIN detection with single-nucleus RNA sequencing and multiplex immunophenotyping of human EAC, we link CIN to tumor-intrinsic innate immune activation, CXCL8 expression, and myeloid cell-mediated immunosuppression. In EAC patients, CIN-high, myeloid-dominated tumors correlate with poor outcomes and aberrant cGAS–STING signaling. These insights explain the counterintuitive maintenance of cGAS–STING and highlight disruption of the CIN–cGAS–inflammation axis as a potential therapeutic strategy in EAC.
  • 🔗 查看原文

4.GSE316655 Claudins 与 LILRB 免疫抑制受体相互作用,促进癌症中的髓系免疫抑制

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、immune、regex:immuno(logy|therapy|suppression)
  • 📝 描述:Contributors : Xiaoye Liu ; Alec Zhang ; Kenian ChenSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensThe mechanisms underlying tumor cell-myeloid cell interactions within the tumor microenvironment (TME) remain unclear, and predictive biomarkers for patient response to myeloid checkpoint blockade are lacking. This study identified specific binding between tight-junction claudins (CLDNs) and leukocyte immunoglobulin-like receptor subfamily B members LILRB2 and LILRB5. In multiple human cancer cohorts, the spatial proximity of LILRB2⁺ macrophages to CLDN-expressing cancer cells correlated with clinical outcomes, nominating this spatial relationship as a potential biomarker. In syngeneic LILRB2-transgenic and humanized mouse models, CLDN18.2–LILRB2 interaction triggered bidirectional signaling, enhanced the immunosuppressive activity of myeloid cells, and accelerated tumor progression. These effects were reversed by LILRB2 blockade. Mechanistically, the CLDN-LILRB2 axis sustained immunosuppression by regulating NF-κB and STAT signaling pathways. Our findings reveal a novel tight junction protein-mediated mechanism of myeloid cell regulation in the TME, offering a rationale for targeting this pathway in cancer therapy.
  • 🔗 查看原文

5.GSE316127 染色体不稳定性通过 cGAS-趋化因子-髓系轴塑造食管腺癌的肿瘤微环境

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、tumor microenvironment、chemokine
  • 📝 描述:Contributors : Bruno Beernaert ; Eileen E ParkesSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensChromosomal instability (CIN), a pervasive feature of esophageal adenocarcinoma (EAC), drives tumor aggressiveness and metastasis. CIN stimulates the cGAS–STING pathway, typically linked to anti-tumor immunity. However, despite the high CIN burden in EAC, the cGAS–STING pathway remains largely intact. To address this paradox, we interrogated multiple esophageal cancer models, discovering myeloid-attracting chemokines – with CXCL8 as a prominent hit – as conserved CIN-driven targets in EAC. Using multiplexed immunofluorescence microscopy, we quantified ongoing CIN in human EAC tumors by measuring cGAS-positive micronuclei, validated by whole-genome sequencing. Coupling in situ CIN detection with single-nucleus RNA sequencing and multiplex immunophenotyping of human EAC, we link CIN to tumor-intrinsic innate immune activation, CXCL8 expression, and myeloid cell-mediated immunosuppression. In EAC patients, CIN-high, myeloid-dominated tumors correlate with poor outcomes and aberrant cGAS–STING signaling. These insights explain the counterintuitive maintenance of cGAS–STING and highlight disruption of the CIN–cGAS–inflammation axis as a potential therapeutic strategy in EAC.
  • 🔗 查看原文

6.GSE316062 染色体不稳定性通过 cGAS–趋化因子–髓系轴塑造食管腺癌的肿瘤微环境 [snRNA-Seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、tumor microenvironment、chemokine
  • 📝 描述:Contributors : Bruno Beernaert ; Eileen E ParkesSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensChromosomal instability (CIN), a pervasive feature of esophageal adenocarcinoma (EAC), drives tumor aggressiveness and metastasis. CIN stimulates the cGAS–STING pathway, typically linked to anti-tumor immunity. However, despite the high CIN burden in EAC, the cGAS–STING pathway remains largely intact. To address this paradox, we interrogated multiple esophageal cancer models, discovering myeloid-attracting chemokines – with CXCL8 as a prominent hit – as conserved CIN-driven targets in EAC. Using multiplexed immunofluorescence microscopy, we quantified ongoing CIN in human EAC tumors by measuring cGAS-positive micronuclei, validated by whole-genome sequencing. Coupling in situ CIN detection with single-nucleus RNA sequencing and multiplex immunophenotyping of human EAC, we link CIN to tumor-intrinsic innate immune activation, CXCL8 expression, and myeloid cell-mediated immunosuppression. In EAC patients, CIN-high, myeloid-dominated tumors correlate with poor outcomes and aberrant cGAS–STING signaling. These insights explain the counterintuitive maintenance of cGAS–STING and highlight disruption of the CIN–cGAS–inflammation axis as a potential therapeutic strategy in EAC.
  • 🔗 查看原文

7. GSE316732 雷帕霉素逆转肝脏对饮食诱导的代谢应激的反应,这种反应会随着年龄的增长而加剧。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:aging、metabolic
  • 📝 描述:Contributors : Aaron P. Havas ; Adarsh Rajesh ; Xue Lei ; Peter D. AdamsSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusAging is associated with increased susceptibility to metabolic stress and chronic liver disease, yet the interactions between age and metabolic stressors and the potential for ameliorating interventions remain incompletely understood. Here, we examined the hepatic response of young (7-month-old) and old (25-month-old) C57BL/6 male mice to a 9-week high-fat diet (HFD) and assessed whether rapamycin, a well-established pro-longevity intervention, could mitigate age-exacerbated effects. While both age groups developed metabolic-associated steatohepatitis (MASH), older mice displayed more severe hepatic steatosis, inflammation, and transcriptional dysregulation. Transcriptomic profiling of whole livers and purified hepatocytes revealed that aging amplifies HFD-induced inflammatory and metabolic gene expression changes, including activation of immune pathways and suppression of metabolic pathways. Notably, treatment of aging mice with rapamycin reversed the majority of HFD-driven transcriptional alterations, including upregulation of pro-inflammatory regulators such as Stat1, and dysregulation of metabolic gene networks. Rapamycin also reduced hepatosteatosis, total body weight, and a tumorigenic transcriptomic signature associated with hepatocellular carcinoma risk. These findings demonstrate that aging intensifies hepatic sensitivity to dietary metabolic stress and identify rapamycin as a promising therapeutic to counteract age-related liver dysfunction and metabolic dysfunction-associated steatotic liver disease (MASLD) progression.
  • 🔗 查看原文

8. GSE291910 Dnmt3a 依赖的从头 DNA 甲基化增强谱系定向并保持记忆 Th1 和 Tfh 细胞的功能 [RNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:RNA-seq、methylation
  • 📝 描述:Contributors : Scott Hale ; Bryant PerkinsSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusFollowing acute viral infection, naïve CD4+ T cells differentiate into T follicular helper (Tfh) and T helper 1 (Th1) cells that generate long-lived memory cells. However, it is unclear how memory Tfh and Th1 cells maintain their lineage commitment. We demonstrate that Tfh and Th1 lineages acquire distinct Dnmt3a-dependent de novo DNA methylation programs that are preserved into memory. Dnmt3a deletion impairs lineage commitment and functionality of memory Th1 and Tfh cells, resulting in aberrant Runx1 upregulation that represses germinal center Tfh cell differentiation. In contrast, transient pharmacological DNA methyltransferase inhibition during priming impairs repression of Tfh-associated genes while properly silencing Runx1, and results in enhanced Tfh cell functionality in primary and secondary responses to viral infections. Together, these findings demonstrate that Dnmt3a-mediated epigenetic programing is required to enforce T helper lineage commitment and preserve Tfh and Th1-specific functions during the recall response to infection, and reveal novel strategies to improve long-lived adaptive immunity against infectious diseases.
  • 🔗 查看原文

9. GSE270117 7种PDA细胞系的单细胞RNA测序

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:sequencing、single-cell
  • 📝 描述:Contributors : Pasquale Laise ; Mikko Turunen ; Alvaro C Garcia ; Lorenzo Tomassoni ; H C Maurer ; Ela Elyada ; Bernhard Schmierer ; Jeremy Worley ; Jordan Kesner ; Xiangtian Tan ; Ester C Fernandez ; Xue Yuanqing ; Chen Yining ; Kelly Wong ; Urszula N Wasko ; Somnath Tagore ; Alexander L Wang ; Sabrina Ge ; Alina C Iuga ; Aaron Griffin ; Winston Wong ; Gulam A Manji ; Mariano J Alvarez ; Faiyaz Notta ; David A Tuveson ; Kenneth P Olive ; Andrea CalifanoSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensWe performed Single-Cell RNA Sequencing of 7 PDA Cell Lines to characterize and quantify PDA subtypes populations
  • 🔗 查看原文

10. GSE159921 混合转录因子过表达分析(单细胞RNA测序)

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:RNAseq、single-cell
  • 📝 描述:Contributors : Pasquale Laise ; Mikko Turunen ; Alvaro C Garcia ; Lorenzo Tomassoni ; H C Maurer ; Ela Elyada ; Bernhard Schmierer ; Jeremy Worley ; Jordan Kesner ; Xiangtian Tan ; Ester C Fernandez ; Sue Yuanqing ; Chen Yining ; Kelly Wong ; Urszula N Wasko ; Somnath Tagore ; Alexander L Wang ; Sabrina Ge ; Alina C Iuga ; Aaron Griffin ; Winston Wong ; Gulam A Manji ; Mariano J Alvarez ; Faiyaz Notta ; David A Tuveson ; Kenneth P Olive ; Andrea CalifanoSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensThe aim of this study is to investigate the effect of the combinatorial overexpression of the top GLS MRs in a MOS cell line (at single-cell level).
  • 🔗 查看原文

💡 该来源还有 30 条内容,详见 文末

🧪 博客更新 (2条)

详细内容(全部2条)

1. 用于单细胞RNA测序数据分析摄取和标准化的智能体AI框架

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:RNA-seq、single-cell
  • 📝 描述:CellAtria uses AI to automate data ingestion and RNA sequencing analysis, making reuse of public single-cell datasets faster, standardized, and accessible without advanced computational skills…
  • 🔗 查看原文

2. 维生素A可能有助于癌细胞躲避免疫系统的攻击。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、immune
  • 📝 描述:A vitamin A byproduct has been found to quietly disarm the immune system, allowing tumors to evade attack and weakening cancer vaccines. Scientists have now developed a drug that shuts down this pathway, dramatically boosting immune responses and slowing cancer growth in preclinical studies.
  • 🔗 查看原文

📊 关键词统计

关键词出现次数
single-cell8
RNA-seq6
tumor6
cancer5
sequencing5
methylation4
immune3
tumor microenvironment3
chemokine3
aging2
metabolic2
ChIP-seq1
histone1
clustering1
regex:immuno(logytherapy
carcinoma1
T cell1
ATAC-seq1
genome1
scRNA1

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🧬 数据前沿 其他内容 (30条)

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