科研日报 2026-05-30

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📅 Daily Report - 2026-05-30

今日筛选出 44 条内容,来自 2 个来源

Powered by 科研普拉斯 & Claude

🤖 今日AI智能总结

🧬 数据前沿

今日焦点

  • CAR T细胞疗法新机制:揭示CAR T细胞诱导肿瘤相关巨噬细胞iNOS,导致CAR T细胞耐药,为克服耐药提供新靶点。
  • CTLA-4阻断介导抗肿瘤免疫:研究证实CTLA-4阻断可增强淋巴结生发中心反应,驱动胶质瘤特异性IgG产生,促进肿瘤清除。

主要方向

  • 肿瘤免疫逃逸与治疗:探讨CAR T细胞耐药机制,以及CTLA-4阻断在肿瘤免疫治疗中的作用。
  • RNA表观遗传调控:研究RNA外切酶REXO4在m6A修饰R-loops形成中的作用,及其对肿瘤免疫的抑制机制。
  • 代谢与疾病:揭示肝脏昼夜节律钟对胆固醇代谢及非酒精性脂肪性肝炎(MASH)的调控,以及SOX4在脂肪基质细胞向癌相关成纤维细胞转化中的作用。

技术亮点

  • 多组学整合分析:结合单细胞RNA测序、ATAC-seq、CUT&Tag-seq等技术,深入解析基因调控网络和细胞状态变化。
  • 高通量药物筛选:利用多重转录组学技术进行药物组合筛选,实现单细胞分辨率的药物作用机制定义。

🧪 博客更新

今日焦点: 新型研究表明,CBD或能通过调节大脑免疫反应,延缓阿尔茨海默病进程。

主要方向

  • 探索CBD对阿尔茨海默病病理机制的影响
  • 利用单细胞分辨率预测基因表达,揭示细胞类型特异性基因表达和非编码变异

技术亮点

  • 基于2200万+细胞RNA测序数据训练的创新模型
  • 首次实现单细胞分辨率的基因表达预测

📚 分类浏览

🧬 数据前沿 (42条)

详细内容(前10条)

1.GSE293878 CAR T 细胞驱动的肿瘤相关巨噬细胞中 iNOS 的诱导促进 B 细胞淋巴瘤的 CAR T 细胞耐药性

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、lymphoma、T cell、B cell、resistance
  • 📝 描述:Contributors : Maro Davila ; Sae Bom Lee ; Jianmin WangSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusChimeric antigen receptor (CAR) T cell therapies have revolutionized B cell malignancy treatment, but subsets of patients with large B cell lymphoma (LBCL) experience primary resistance or relapse after CAR T cell treatment. To uncover tumor microenvironment (TME)-induced resistance mechanisms, we examined patients’ intratumoral immune infiltrates and observed that the elevated levels of immunoregulatory macrophages in pre-infusion tumor biopsies are correlated with poor clinical responses. CAR T cell-produced interferon-gamma (IFN-γ) promotes the expression of inducible nitric oxide synthase (iNOS, NOS2) in immunoregulatory macrophages, impairing CAR T cell functionality. Mechanistically, iNOS-expressing macrophages upregulated the p53 pathway, mediating apoptosis and cell cycle arrest in CAR T cells, while downregulating the MYC pathway involved in ribosome biogenesis and protein synthesis. Furthermore, CAR T cell metabolism is compromised by the depletion of glycolytic intermediates and rewiring of the TCA cycle. Pharmacological inhibition of iNOS enhances the CAR T cell treatment efficacy in B cell tumor-bearing mice. Notably, elevated levels of iNOS+CD14+ monocytes were observed in the leukapheresis material of patients with non-durable response to CAR T cell therapy. These findings suggest that mitigating iNOS in tumor-associated macrophages (TAMs) by blocking IFN-g secretion from CAR T cells will improve outcomes for LBCL patients.
  • 🔗 查看原文

2.GSE293917 CTLA-4 阻断增强淋巴结生发中心反应,从而驱动胶质瘤特异性 IgG 产生和胶质瘤清除 [scRNA/BCR-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:lymph、regex:lymph(o|atic)?、glioma、scRNA
  • 📝 描述:Contributors : Yumin Kim ; Jeongwoo LA ; Heung Kyu LeeSeries Type : Expression profiling by high throughput sequencing ; OtherOrganism : Mus musculusThe orchestration of humoral immunity mediated by B cells in lymph nodes (LNs) is essential for generating adaptive immune response. Despite this crucial role in host defense, B cell responses in cancer have been primarily examined in the tumor microenvironment, while their role in LNs remains largely unexplored. We show that B cell responses in LNs induced by αCTLA-4 regulate glioblastoma (GBM) progression. αCTLA-4 promotes germinal center (GC) formation in deep cervical LNs by enhancing B cell–CD4 T cell interactions, leading to expansion of antigen-specific GC B cells and class switching. This generates tumor-specific IgG, which binds glioma cells and triggers antibody-mediated phagocytosis. Mice lacking antibody-secreting cells fail to benefit from CTLA-4 blockade, underscoring the importance of humoral immunity in tumor control. Our study highlights the role of B cells in tumor-draining LNs and uncovers a novel B cell–dependent mechanism underlying αCTLA-4 efficacy in GBM.
  • 🔗 查看原文

3.GSE293916 CTLA-4 阻断增强淋巴结生发中心反应,从而驱动胶质瘤特异性 IgG 产生和胶质瘤清除 [bulk RNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:lymph、regex:lymph(o|atic)?、glioma、RNA-seq
  • 📝 描述:Contributors : Yumin Kim ; Jeongwoo La ; In Kang ; Byeong Hoon Kang ; Heung Kyu LeeSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusThe orchestration of humoral immunity mediated by B cells in lymph nodes (LNs) is essential for generating adaptive immune response. Despite this crucial role in host defense, B cell responses in cancer have been primarily examined in the tumor microenvironment, while their role in LNs remains largely unexplored. We show that B cell responses in LNs induced by αCTLA-4 regulate glioblastoma (GBM) progression. αCTLA-4 promotes germinal center (GC) formation in deep cervical LNs by enhancing B cell–CD4 T cell interactions, leading to expansion of antigen-specific GC B cells and class switching. This generates tumor-specific IgG, which binds glioma cells and triggers antibody-mediated phagocytosis. Mice lacking antibody-secreting cells fail to benefit from CTLA-4 blockade, underscoring the importance of humoral immunity in tumor control. Our study highlights the role of B cells in tumor-draining LNs and uncovers a novel B cell–dependent mechanism underlying αCTLA-4 efficacy in GBM.
  • 🔗 查看原文

4.GSE315742 CTLA-4阻断可增强淋巴结生发中心反应,从而促进胶质瘤特异性IgG的产生和胶质瘤的清除

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:lymph、regex:lymph(o|atic)?、glioma
  • 📝 描述:Contributors : Yumin Kim ; Heung Kyu LeeSeries Type : OtherOrganism : Mus musculusHumoral immunity, which is mediated by B cells that mature in germinal centers (GCs) in lymph nodes (LNs), is essential for adaptive immune responses. However, the involvement of B cell responses in anti-tumor and immunotherapy responses remains largely unexplored. Here, we show that activation of B cells in GCs of tumor-draining deep cervical LNs (dcLNs) is necessary for the efficacy of CTLA-4 immune checkpoint blockade in glioma in vivo. We demonstrate that anti-CTLA-4 therapy enhances follicular helper T cell (Tfh) expansion in dcLNs, leading to GC B cell formation, class switching to IgG, and the generation of glioma-specific antibodies. Glioma-bearing mice lacking antibody-secreting cells did not benefit from CTLA-4 blockade. Furthermore, using our new in vivo reporter system, we show that distally-secreted glioma-specific IgG infiltrates the tumor microenvironment and triggers glioma cell phagocytosis. Our study uncovers a previously unknown B cell–dependent mechanism underlying anti-CTLA-4 mediated control of glioma, which could be harnessed to treat other tumor types.
  • 🔗 查看原文

5.GSE313849 RNA 核酸外切酶 REXO4 解析 m6A 标记的 R 环并抑制抗肿瘤免疫 [REXO4-dTAG HeLa 细胞中的 RNAseq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、immunity、RNAseq
  • 📝 描述:Contributors : Jieyou Zhang ; Kaiwen Bao ; Qi Chen ; Lei ShiSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensTo determine if REXO4 depletion directly induces R-loop accumulation independent of transcription, we generated a HeLa cell line expressing endogenous REXO4 tagged with an N-terminal HA-FKBP12/F36V degron (REXO4-dTAG) via microhomology-mediated end joining (MMEJ)-based CRISPR/Cas9. Acute REXO4 degradation, achieved by a 4-hr treatment with dTAG-13 (dTAG), was then analyzed by RNA-seq to assess transcriptomic changes
  • 🔗 查看原文

6.GSE289625 RNA 核酸外切酶 REXO4 可解析 m6A 标记的 R 环并抑制抗肿瘤免疫 [RNAseq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、immunity、RNAseq
  • 📝 描述:Contributors : Jieyou Zhang ; Kaiwen Bao ; Chunyong Zhang ; Lei ShiSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiens ; Mus musculusTranscription blockage frequently occurs in tumor cells, and aberrant R-loop forming during this process drives genome instability. However, the regulation of R-loop homeostasis and its dysregulation in tumorigenesis are still under investigation. Here, we report that the RNA exonuclease REXO4 preserves genome stability by reducing excessive R-loops. Mechanistically, REXO4 resolves R-loops by 3’-5’ exonucleolytic cleavage of the RNA strand on RNA-DNA hybrids, where an accessible end is created by RNA endonuclease and N6-methyladenosine (m6A) modification on RNA moieties promotes REXO4 localization and R-loop removal. REXO4 ablation-induced DNA damage stimulates interferon response and tumor immune infiltration to suppress squamous cell carcinoma (SCC) growth and metastasis. Importantly, targeting the exonuclease activity of REXO4 via the inhibitor we developed synergizes with PD-1 blockade to inhibit SCC progression by recruiting and activating CD8+ T cells. Thus, our study provides mechanistic insight into how m6A couples with exonuclease in R-loop clearance and genome maintenance, and uncovers a druggable epi-transcriptional machinery that blocks innate immune response and enables SCC immune evasion.
  • 🔗 查看原文

7. GSE329199:单细胞RNA测序揭示波瓦桑病毒感染后中枢神经系统对年龄的依赖性反应

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:sequencing、single-cell
  • 📝 描述:Contributors : Marcos R. Matos de Souza ; Erich R. MackowSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusPowassan virus (POWV) causes highly lethal encephalitis in the elderly and long-term cognitive deficits in survivors. Mirroring human severity, POWV LI9 directs age-dependent lethality in B6 mice resulting in spongiform encephalitis, gliosis and inflammatory cytokine/chemokine responses in the CNS. Here we analyzed POWV LI9 infected brains from 10 (young) and 50 week old (aged) B6 mice using 10x Genomics scRNA-seq to define CNS responses that direct age-dependent lethality.
  • 🔗 查看原文

8. GSE313850 RNA 核酸外切酶 REXO4 解析 m6A 标记的 R 环并抑制抗肿瘤免疫 [CUT&Tag-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、immunity
  • 📝 描述:Contributors : Jieyou Zhang ; Kaiwen Bao ; Qi Chen ; Lei ShiSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Homo sapiensTo map the genome-wide distribution of R-loops and REXO4, we performed CUT&Tag-seq with antibodies against S9.6 (for R-loops) and REXO4.
  • 🔗 查看原文

9. GSE313848 RNA 核酸外切酶 REXO4 解析 m6A 标记的 R 环并抑制抗肿瘤免疫 [MRC-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、immunity
  • 📝 描述:Contributors : Jieyou Zhang ; Kaiwen Bao ; Qi Chen ; Lei ShiSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Homo sapiensTo achieve a more specific mapping of m6A-marked R-loops, we developed an m6A-marked R-loop CUT&Tag sequencing (MRC-seq) approach to map m6A-marked R-loops, which involves the specific isolation of R-loops using an S9.6 antibody-based CUT&Tag approach followed by m6A immunoprecipitation.
  • 🔗 查看原文

10. GSE313847 RNA 核酸外切酶 REXO4 可解析 m6A 标记的 R 环并抑制抗肿瘤免疫 [END_seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、immunity
  • 📝 描述:Contributors : Jieyou Zhang ; Kaiwen Bao ; Qi Chen ; Lei ShiSeries Type : OtherOrganism : Homo sapiensTo investigate the features of DNA structures that are protected by REXO4, we performed END-seq, a method that maps DSBs at nucleotide resolution in REXO4-depleted cells.
  • 🔗 查看原文

💡 该来源还有 32 条内容,详见 文末

🧪 博客更新 (2条)

详细内容(全部2条)

1. CBD可能通过镇静大脑免疫系统来延缓阿尔茨海默病的发展。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:immune、Alzheimer
  • 📝 描述:CBD may be doing far more than just easing pain or anxiety — new research suggests it could help fight Alzheimer’s disease by calming the brain’s runaway immune response. In experiments using Alzheimer’s mice, scientists found that inhaled CBD reduced key drivers of neuroinflammation, a damaging process increasingly linked to memory loss and brain degeneration.
  • 🔗 查看原文

2. Decima 能够以单细胞分辨率预测基因表达。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:single-cell
  • 📝 描述:RNA sequencing from more than 22 million cells trained a model that predicts cell-type-specific gene expression and noncoding variant…
  • 🔗 查看原文

📊 关键词统计

关键词出现次数
tumor8
immunity7
single-cell6
cancer6
resistance5
RNA-seq4
sequencing3
lymph3
regex:lymph(oatic)?
glioma3
metabolism3
metabolic3
epigenetic3
RNAseq2
scRNA2
immune2
ATAC-seq2
B cell2
Alzheimer2
transcriptomics1

📎 更多内容

🧬 数据前沿 其他内容 (32条)

📅 报告生成时间:2026-05-29 22:46
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