科研日报 2026-03-21

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📅 Daily Report - 2026-03-21

今日筛选出 43 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: BRD8被发现是克服HR+/HER2+乳腺癌耐药性的治疗靶点,首次揭示其在克服双重阻断疗法耐药中的关键作用。

主要方向

  • 肿瘤免疫:解析肿瘤相关树突状细胞的单细胞图谱,探索Optineurin对HSV-1免疫的调控机制,以及CNS1对CD4+ T细胞和Treg反应的影响。
  • 癌症治疗:研究BRD8在乳腺癌治疗中的潜力,评估miR-99b-5p抑制剂在三阴性乳腺癌中的抗肿瘤作用。
  • 细胞代谢与信号通路:探究GLS1在血管平滑肌细胞功能及主动脉夹层中的作用,解析TRA2B对Dicer介导的miRNA生物合成的调控。

技术亮点

  • 首次利用全癌种单细胞图谱解析肿瘤相关树突状细胞。
  • 开发了CapMux,一种用于早期拆分多重scRNA-seq数据的Snakemake流程。

🧪 博客更新

今日焦点: 一项研究首次揭示,常见的牙周病菌可通过血流转移至乳腺组织,可能促进乳腺癌的生长与扩散。

主要方向

  • 探索牙周病菌与乳腺癌发生及转移的关联。
  • 研究基因突变如何影响RNA结构及其与小分子药物的相互作用。

技术亮点

  • 利用RNA测序技术,精准描绘突变驱动下的RNA-小分子药物相互作用谱。

📚 分类浏览

🧬 数据前沿 (41条)

详细内容(前10条)

1.GSE304727 小鼠和人类肿瘤相关树突状细胞的泛癌单细胞图谱

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、cancer、single-cell
  • 📝 描述:Contributors : Daliya Kancheva ; Caro Aarushi ; Laoui DamyaSeries Type : Other ; Expression profiling by high throughput sequencingOrganism : Mus musculusDendritic cells (DCs) are critical inducers of anti-tumor immunity. Yet, a comprehensive mapping of mouse and human DC subsets and states in a cancer context is lacking. Aiming to address this knowledge gap, we have generated pan-cancer mouse and human tumor-associated DC (TADC) scRNA-seq atlases, encompassing 15 mouse tumor models and 10 human cancer types, within which we identified several lineage-defined DC subsets along with functional states. We show that TADCs acquire an inflammatory profile with tumor progression and that tumor-mediated reprogramming occurs within the DCs from lymph nodes of tumor-bearing mice. Importantly, we demonstrate that TADCs are conserved across mice and human, and that gene signatures of different TADC subsets/states correlate with patient outcomes. Overall, we provide an in-depth characterization of the TADC compartment in mouse and human cancers, which can improve our understanding of the tumor microenvironment and contribute to the development of new anti-cancer therapies.
  • 🔗 查看原文

2. GSE319599 通过分析循环 miRNA 和整体 DNA 甲基化,研究职业性接触挥发性麻醉剂的兽医的表观遗传学特征

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:epigenetic、methylation
  • 📝 描述:Contributors : Tony Fernando Grassi ; Mariane Aparecida Pereira Silva ; Maria Vitória Destro ; Iael Weissberg Minutentag ; Patrícia Pintor dos Reis ; Bruno Spinosa De Martinis ; Mónica Cappetta ; Leandro Gobbo Braz ; Mariana Gobbo BrazSeries Type : Non-coding RNA profiling by arrayOrganism : Homo sapiensOccupational exposure to waste anesthetic gases (WAGs) in veterinary operating rooms represents a potential health concern due to limited environmental monitoring. In this study, plasma samples from veterinarians chronically exposed to isoflurane and sevoflurane and from matched unexposed controls were analyzed to investigate molecular alterations associated with WAG exposure. Circulating microRNA expression was profiled using the NanoString nCounter® Human v3 miRNA Expression Assay. Differential expression analysis was performed to identify miRNAs associated with occupational exposure. Additional bioinformatic analyses were conducted to explore the potential biological pathways related to the identified miRNAs.
  • 🔗 查看原文

3. GSE311002 绘制原始巨噬细胞胞外囊泡的 miRNA 图谱,突显其在工程化人类心脏组织中的促血管生成作用

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:macrophage、cardiac
  • 📝 描述:Contributors : Karl T Wagner ; Shira Landau ; Gregory M Kent ; David F Bodenstein ; Milica RadisicSeries Type : Non-coding RNA profiling by high throughput sequencingOrganism : Homo sapiensResident cardiac macrophages, derived from primitive yolk sac precursors during embryogenesis, have increasingly been recognized for their distinct phenotype and functions in regulating homeostasis of the human heart. However, the profile of their extracellular vesicles (EVs) in cardiac signalling and regulation remains uncharted. Here, we employ differentiation of human pluripotent stem cell (hPSC)-derived primitive macrophages (Mac) for isolation of their secreted EVs and in-depth characterization of EV-miRNA cargo. Primitive macrophages secreted nanoscale EVs that expressed canonical EV markers, and miRNA sequencing highlighted a diverse and unique profile of miRNAs when compared to EVs sourced from other principal cardiac cell lineages and published data from monocyte-derived cells. In particular, we noted the abundance and enrichment of vascular-modulatory let-7 miRNAs and miR-126-3p. Functional screening of Mac-EVs in a 3D model of in vitro cardiac vasculogenesis confirmed enhanced early endothelial cell organization and branching. Establishing a reference for the human Mac-EV miRNome enables further hypothesis-driven mechanistic tests of Mac-EV miRNAs in mediating cardiac physiology and disease, opening the door to identification of therapeutic targets and modalities for cardiac repair.
  • 🔗 查看原文

4. GSE320160 Optineurin 调节 mTORC2/AKT/STAT3 信号通路以控制 MHC II 表达和针对 HSV-1 的适应性免疫

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:immunity、MHC
  • 📝 描述:Contributors : Rashmi Kadam ; Deepak Shukla ; Leonid Feferman ; Mark Maienschein-Cline ; George ChlipalaSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusHerpes simplex virus 1 (HSV-1) infection contributes to immunopathogenic diseases and lacks an effective vaccine. Improving antigen presentation is key to better vaccine strategies and more robust immune responses. Here, we show that OPTN, an autophagy receptor traditionally involved in protein recycling, unexpectedly stabilizes RICTOR (mTORC2), a crucial step in enhancing MHC-II surface expression in dendritic cells. OPTN regulates the AKT/mTOR/STAT3 pathway, with AKT2 isoform playing a central role. Using scRNA-seq and transgenic mouse models, we identify the mechanistic details of this pathway. Dysregulation impairs antigen presentation, weakening immunity and vaccine efficacy. Our findings uncover a novel function for OPTN and highlight its role in coordinating innate and adaptive immune defenses, with implications for vaccine development and immune response modulation in HSV-1 and other viral and bacterial diseases.
  • 🔗 查看原文

5. GSE286038 BRD8 是克服 HR+/HER2+ 乳腺癌对 ER/HER2 双重阻断疗法耐药性的治疗靶点

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、resistance
  • 📝 描述:Contributors : Ang Gao ; Parth H Khatri ; Huy Q Dinh ; Wei XuSeries Type : Genome binding/occupancy profiling by high throughput sequencing ; Expression profiling by high throughput sequencingOrganism : Homo sapiensHormone receptor (HR)-positive, HER2-positive breast cancers often develop resistance to endocrine and anti-HER2 therapies due to the heterogeneous expression of estrogen receptor (ER) and HER2 and the crosstalk of these growth-promoting pathways. However, how anti-HER2 agents activate ER and other growth-promoting pathways remains unknown. Single-cell RNA sequencing of BT474 breast cancer cells identified Bromodomain Containing Protein 8 (BRD8), an acetyl-lysine reader protein in the histone acetylase EP400 complex, as a pivotal mediator to activate ER in response to neratinib treatment. BRD8 expression was rapidly induced by various anti-HER2 agents (neratinib, lapatinib, and trastuzumab), and its depletion disrupted the crosstalk between ER and HER2 signaling pathways and rendered HR+/HER2+ cells and tumor organoids more sensitive to anti-HER2 agents. BRD8, ER, and ER target genes are co-induced by neratinib in single-nucleus (sn) RNA sequencing of a patient-derived xenograft (PDX). Concomitantly, SnATAC-seq reveals that the activated genes share open chromatin regions enriched in transcription factors (TF) binding motifs of ER, forkhead box (FOX), and ETS family. Since EP400 enhances H2AZ deposition and acetylation on chromatin, we performed H2AZ and H2AZac ChIP-sequencing in the presence or absence of BRD8 and neratinib treatment. Upon neratinib treatment, BRD8 activates ER, FOX, and ETS target genes through modulating H2AZac deposition and chromatin decompaction. This finding coincides with RNA-sequencing, where BRD8 promotes cell growth in an ER-dependent and independent manner. In line with these findings, patients who responded poorly to the anti-HER2 therapies exhibited higher BRD8 gene signatures. Furthermore, BRD8 knockdown ablates the ER and HER2 signaling crosstalk and re-sensitizes neratinib-resistant HR+/HER2+ cells to neratinib. Together, this work not only explains why ER signaling is activated upon anti-HER2 therapies but also identifies BRD8 as a druggable vulnerability in HR+/HER2+ breast cancer.
  • 🔗 查看原文

6. GSE283036 BRD8 是克服 HR+/HER2+ 乳腺癌对 ER/HER2 双重阻断疗法耐药性的治疗靶点

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、resistance
  • 📝 描述:Series Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Homo sapiensHormone receptor (HR)-positive, HER2-positive breast cancers often develop resistance to endocrine and anti-HER2 therapies due to the heterogeneous expression of estrogen receptor (ER) and HER2 and the crosstalk of these growth-promoting pathways. However, how anti-HER2 agents activate ER and other growth-promoting pathways remains unknown. Single-cell RNA sequencing of BT474 breast cancer cells identified Bromodomain Containing Protein 8 (BRD8), an acetyl-lysine reader protein in the histone acetylase EP400 complex, as a pivotal mediator to activate ER in response to neratinib treatment. Since EP400 enhances H2AZ deposition and acetylation on chromatin, we performed H2AZ and H2AZac ChIP-sequencing in the presence or absence of BRD8 and neratinib treatment. This will help us address how BRD8 regulates ER as well as other growth factors.
  • 🔗 查看原文

7. GSE230328 BRD8 是克服 HR+/HER2+ 乳腺癌对 ER/HER2 双重阻断疗法耐药性的治疗靶点

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、resistance
  • 📝 描述:Series Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensThis SuperSeries is composed of the SubSeries listed below.
  • 🔗 查看原文

8. GSE321682 miR-99b-5p抑制驱动三阴性乳腺癌细胞凋亡和肿瘤缩小:基于AGO2-RIP-seq的功能表征和机制研究

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、cancer
  • 📝 描述:Contributors : Senem Noyan ; Kubra N Kaplan-Ilhan ; Muge O Demirtas ; Begum Dalli ; Bora Ergin ; Rabia Sen ; Hakan Gurdal ; Bala G DedeogluSeries Type : OtherOrganism : Homo sapiensBackground: Dysregulated microRNAs (miRNAs) are critical contributors to breast cancer biology, yet the functional roles of many remain incompletely understood. miR-99b-5p has been widely characterized as a tumor-suppressive miRNA in numerous cancer types, where its expression is consistently reduced in tumors compared with normal tissues. In contrast, our analyses of breast cancer datasets revealed a unique expression pattern: miR-99b-5p is significantly upregulated in breast tumors, suggesting a context-dependent oncogenic function. In this study, we identified miR-99b-5p as an oncogenic driver in triple-negative breast cancer (TNBC). Methods and Results: TCGA-based expression profiling confirmed its elevated levels in breast tumors. Functional assays demonstrated that downregulation of miR-99b-5p in TNBC cells inhibits proliferation and induces apoptosis, indicating a critical role in sustaining tumor cell survival. To elucidate the molecular mechanisms underlying this activity, we performed AGO2-RNA immunoprecipitation followed by high-throughput sequencing (AGO2-RIP-Seq), enabling unbiased identification of miR-99b-5p-associated transcripts. Pathway enrichment analyses revealed that its direct targets converge on apoptotic regulation, cell-cycle control, and ubiquitin-mediated protein degradation. Mechanistic validation through qRT-PCR, Western blotting, and luciferase assays confirmed that miR-99b-5p modulates the TRAIL-R signaling pathway via DR5 and BAK, attenuating apoptotic signaling. In vivo studies using xenograft models established with MDA-MB-231 cells stably expressing miR-99b-5p knockdown showed marked tumor regression, further supporting its oncogenic role. Conclusion: Collectively, these findings establish miR-99b-5p as a context-specific oncogenic miRNA in breast cancer and a promising therapeutic target, particularly for TNBC, where targeted treatment options remain limited.
  • 🔗 查看原文

9. GSE312007 新一代测序促进了对 Ddx21 在造血干细胞中的作用进行定量分析 [RNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:sequencing、RNA-seq
  • 📝 描述:Contributors : Yalan Xiao ; Zhigang Li ; Yu HouSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusHematopoietic stem cell (HSC) homeostasis is critically dependent on precisely regulated protein synthesis, with the nucleolus serving as the principal orchestrator of ribosome biogenesis and cellular stress sensing. DDX21, a nucleolus-localized DEAD-box RNA helicase, serves as a master regulator in ribosomal DNA (rDNA) transcription and ribosome assembly. Nevertheless, its precise function in adult hematopoiesis remains incompletely understood. Here, we reveal that conditional knockout of Ddx21 in the murine hematopoietic system triggers collapse of HSC homeostasis, characterized by loss of quiescence, impaired self-renewal capacity, and raised apoptosis. Mechanistically, we demonstrate that DDX21 physically associates with both rDNA loci and promoters of ribosomal protein genes. Its loss disrupts ribosome production, causes nucleolar stress, culminates in p53-mediated cell cycle arrest and apoptosis in HSPCs. Taken together, our study establishes DDX21 as a master regulator in HSCs, integrating ribosome biogenesis with nucleolar stress induction and hematopoietic homeostasis.
  • 🔗 查看原文

10. GSE325364 PAF1 N 端延伸产生的 PAF1c-SKIP-CDKB 模块调控植物界的植物特异性细胞周期 [RNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:RNA-seq
  • 📝 描述:Contributors : Yan Li ; Renshen YuanSeries Type : Expression profiling by high throughput sequencingOrganism : Chlamydomonas reinhardtiiThrough systematic biochemical analyses, we identified a novel protein-protein interaction between PAF1 and SKIP in Chlamydomonas reinhardtii. To investigate the functional significance of this interaction, we generated targeted mutants using CRISPR-Cas9 genome editing technology. Phenotypic characterization revealed that both PAF1 and SKIP mutants exhibit coordinated regulation of the cell cycle progression. To elucidate the molecular mechanism underlying PAF1-SKIP mediated cell cycle regulation, we employed an integrated multi-omics approach. RNA sequencing (RNA-seq) analysis was performed to identify differentially expressed genes, while chromatin immunoprecipitation sequencing (ChIP-seq) was utilized to map the genomic loci directly bound by the PAF1-SKIP protein complex. This comprehensive strategy enabled us to delineate the transcriptional network governed by the PAF1-SKIP regulatory module.
  • 🔗 查看原文

💡 该来源还有 31 条内容,详见 文末

🧪 博客更新 (2条)

详细内容(全部2条)

1. 牙龈疾病细菌与乳腺癌的生长和扩散有关

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、regex:bacter(ia|ial|ium)
  • 📝 描述:A common oral bacterium tied to gum disease may help spark and fuel breast cancer, according to new research. Scientists discovered it can travel through the bloodstream to breast tissue, where it causes DNA damage and speeds tumor growth and spread. It also appears to make cancer cells more aggressive and resistant to therapy. The effect is even stronger in people with BRCA1 mutations, raising new questions about the role of oral health in cancer risk.
  • 🔗 查看原文

2. 利用基于测序的分析方法绘制突变驱动的RNA药物相互作用图谱

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:sequencing
  • 📝 描述:RNA sequencing reveals how single mutations alter RNA structure and small molecule binding, enabling detection of variant-specific interactions that may guide development of…
  • 🔗 查看原文

📊 关键词统计

关键词出现次数
cancer8
RNA-seq7
metabolism4
proteome4
sequencing3
scRNA3
epigenetic3
resistance3
cardiac2
tumor2
single-cell2
immune2
methylation1
macrophage1
immunity1
MHC1
RNAseq1
T cell1
B cell1
genome1

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🧬 数据前沿 其他内容 (31条)

📅 报告生成时间:2026-03-20 21:50
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