科研日报 2026-02-14

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📅 Daily Report - 2026-02-14

今日筛选出 61 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: KRAS驱动的肿瘤微环境准备机制,涉及TNFα,为胰腺癌发生前铺设“温床”。

主要方向

  • 探索KRAS驱动的肿瘤微环境准备机制(胰腺癌)。
  • 阐明STAT5B SH2结构域突变对肝脏胆固醇和脂质代谢的影响。
  • 研究CDK7抑制剂在肿瘤治疗中的作用及其分子机制。

技术亮点

  • 整合单细胞转录组学与磷酸化蛋白质组学,解析EGFR调控皮层神经胶质发生网络。
  • 空间转录组学技术应用于创伤性脑损伤研究,揭示4-氨基吡啶的治疗潜力。

🧪 博客更新

今日焦点: 科学家发现新型蛋白质能逆转衰老脑细胞功能,为神经再生带来新希望。

主要方向

  • 识别并验证调控神经干细胞再生能力的蛋白质。
  • 解析小行星撞击物中氨基酸的全新形成机制。
  • 开发新型单细胞RNA测序分析工具,绘制代谢物介导的细胞通讯图谱。

技术亮点

  • 利用RNA测序与代谢模型相结合,首次实现对代谢物驱动的细胞间通讯进行可视化分析。
  • 发现DMTF1蛋白在恢复衰老神经干细胞再生能力中的关键作用。

📚 分类浏览

🧬 数据前沿 (58条)

详细内容(前10条)

1.GSE312209 致癌 KRAS 驱动的分泌组涉及 TNFα,促进胰腺癌发生前的微环境准备 [共培养 scRNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、regex:onco(logy|logist|gene|genic)、scRNA、KRAS
  • 📝 描述:Contributors : Chantal Allgoewer ; Markus Breunig ; Alexander KlegerSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensBackground: Pancreatic ductal adenocarcinomas (PDACs) are highly lethal and aggressive with oncogenic KRAS being the main oncogenic driver of the disease. PDACs have been extensively profiled at advanced stages, and in advanced disease the tumor microenvironment is a major determinant that critically shapes patient outcomes. Since the molecular events occurring prior to invasive growth remain poorly understood, we aimed to investigate changes in the precancerous epithelium and its surrounding niche.Methods: We acquired time-resolved, single-cell transcriptomic (scRNAseq), and accessible-chromatin data from human pluripotent stem cell-derived pancreatic duct-like organoids (PDLO) inducibly expressing KRASG12D and from various niche cells. Results: Analysis of the pure epithelium already revealed key signatures of matrix remodeling and inflammation-related signaling upon few days of KRASG12D expression. Machine learning captured KRASG12D-dependent transcriptomic classifiers with high prediction accuracy and niche preparatory relevance. Various co-culture approaches followed by scRNAseq and functional validation, including T-cell microfluidics, demonstrated that the KRASG12D-induced PDLO-secretome activates pancreatic stellate cells (PaSCs) and protects precancerous organoids from T cell infiltration. Additional, in silico approaches reconstructed a virtual pancreatic (pre)cancerous space to profile cell-cell interactions between PDLOs and niche cells. TNFα emerged as a top-ranked ligand and was functionally validated to mediate T-cell shielding and PaSC activation. Cyst fluid from 80 prospectively sampled Intraductal Papillary Mucinous Neoplasm (IPMNs) –well-known cystic PDAC precursor lesions– showed a stepwise TNFα rise across LGD (low-grade), HGD (high-grade), and IC (invasive cancer).Conclusion: Our study reveals that oncogenic KRAS orchestrates niche-preparatory programs that precede PDAC formation and highlight a T cell exclusion program governed by epithelial-derived TNFα.
  • 🔗 查看原文

2.GSE284392 致癌 KRAS 驱动的分泌组涉及 TNFα,促进胰腺癌发生前的微环境准备 [时间序列 scRNA-Seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、regex:onco(logy|logist|gene|genic)、scRNA、KRAS
  • 📝 描述:Contributors : Chantal Allgoewer ; Markus Breunig ; Alexander KlegerSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensBackground: Pancreatic ductal adenocarcinomas (PDACs) are highly lethal and aggressive with oncogenic KRAS being the main oncogenic driver of the disease. PDACs have been extensively profiled at advanced stages, and in advanced disease the tumor microenvironment is a major determinant that critically shapes patient outcomes. Since the molecular events occurring prior to invasive growth remain poorly understood, we aimed to investigate changes in the precancerous epithelium and its surrounding niche.Methods: We acquired time-resolved, single-cell transcriptomic (scRNAseq), and accessible-chromatin data from human pluripotent stem cell-derived pancreatic duct-like organoids (PDLO) inducibly expressing KRASG12D and from various niche cells. Results: Analysis of the pure epithelium already revealed key signatures of matrix remodeling and inflammation-related signaling upon few days of KRASG12D expression. Machine learning captured KRASG12D-dependent transcriptomic classifiers with high prediction accuracy and niche preparatory relevance. Various co-culture approaches followed by scRNAseq and functional validation, including T-cell microfluidics, demonstrated that the KRASG12D-induced PDLO-secretome activates pancreatic stellate cells (PaSCs) and protects precancerous organoids from T cell infiltration. Additional, in silico approaches reconstructed a virtual pancreatic (pre)cancerous space to profile cell-cell interactions between PDLOs and niche cells. TNFα emerged as a top-ranked ligand and was functionally validated to mediate T-cell shielding and PaSC activation. Cyst fluid from 80 prospectively sampled Intraductal Papillary Mucinous Neoplasm (IPMNs) –well-known cystic PDAC precursor lesions– showed a stepwise TNFα rise across LGD (low-grade), HGD (high-grade), and IC (invasive cancer).Conclusion: Our study reveals that oncogenic KRAS orchestrates niche-preparatory programs that precede PDAC formation and highlight a T cell exclusion program governed by epithelial-derived TNFα.
  • 🔗 查看原文

3.GSE284390 致癌 KRAS 驱动的分泌组涉及 TNFα,促进胰腺癌发生前的微环境准备 [ATAC-Seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、regex:onco(logy|logist|gene|genic)、ATAC-seq、KRAS
  • 📝 描述:Contributors : Chantal Allgoewer ; Markus Breunig ; Alexander KlegerSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Homo sapiensBackground: Pancreatic ductal adenocarcinomas (PDACs) are highly lethal and aggressive with oncogenic KRAS being the main oncogenic driver of the disease. PDACs have been extensively profiled at advanced stages, and in advanced disease the tumor microenvironment is a major determinant that critically shapes patient outcomes. Since the molecular events occurring prior to invasive growth remain poorly understood, we aimed to investigate changes in the precancerous epithelium and its surrounding niche.Methods: We acquired time-resolved, single-cell transcriptomic (scRNAseq), and accessible-chromatin data from human pluripotent stem cell-derived pancreatic duct-like organoids (PDLO) inducibly expressing KRASG12D and from various niche cells. Results: Analysis of the pure epithelium already revealed key signatures of matrix remodeling and inflammation-related signaling upon few days of KRASG12D expression. Machine learning captured KRASG12D-dependent transcriptomic classifiers with high prediction accuracy and niche preparatory relevance. Various co-culture approaches followed by scRNAseq and functional validation, including T-cell microfluidics, demonstrated that the KRASG12D-induced PDLO-secretome activates pancreatic stellate cells (PaSCs) and protects precancerous organoids from T cell infiltration. Additional, in silico approaches reconstructed a virtual pancreatic (pre)cancerous space to profile cell-cell interactions between PDLOs and niche cells. TNFα emerged as a top-ranked ligand and was functionally validated to mediate T-cell shielding and PaSC activation. Cyst fluid from 80 prospectively sampled Intraductal Papillary Mucinous Neoplasm (IPMNs) –well-known cystic PDAC precursor lesions– showed a stepwise TNFα rise across LGD (low-grade), HGD (high-grade), and IC (invasive cancer).Conclusion: Our study reveals that oncogenic KRAS orchestrates niche-preparatory programs that precede PDAC formation and highlight a T cell exclusion program governed by epithelial-derived TNFα.
  • 🔗 查看原文

4.GSE304485:来自13种TCGA癌症类型和正常组织的批量RNA-Seq基因表达谱,用于肿瘤分类

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、cancer、TCGA、RNA-seq
  • 📝 描述:Contributor : Sergii BabichevSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensThis dataset includes bulk RNA-Seq gene expression profiles of 6310 samples from 13 cancer types and normal tissues, obtained from The Cancer Genome Atlas (TCGA) and processed using a standardized pipeline. The raw count matrix, initially containing 60,660 genes, was filtered to retain only valid ENTREZ gene identifiers matched via the org.Hs.eg.db annotation package. Genes with zero variance across samples were removed. Normalization was performed by transforming expression values into log2 Counts Per Million (CPM) using the edgeR::cpm() function with log transformation. To ensure all values were positive and suitable for downstream modeling, a global shift was applied by adding the absolute minimum value. Subsequently, Gene Ontology (GO) analysis was performed across all three categories (Biological Process, Molecular Function, Cellular Component) using the TopGO package. Significant genes were selected, followed by Benjamini–Hochberg p-value correction, and validated using both Fisher’s and Kolmogorov–Smirnov tests. The resulting expression matrix consists of 18,564 functionally relevant genes across 6310 samples and forms the basis for clustering, classification, and metric evaluation within hybrid modeling frameworks for cancer diagnostics.
  • 🔗 查看原文

5.GSE319409 利用空间转录组学绘制创伤性脑损伤的继发反应图谱显示,急性 4-氨基吡啶治疗可减轻轴突和分子病理学

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:spatial、spatial transcriptomics、transcriptomics
  • 📝 描述:Contributors : Genevieve M Sullivan ; Kryslaine L Radomski ; Shaoqiu He ; Matthew D Wilkerson ; Clifton L Dalgard ; Camille Alba ; Xiaomei Zi ; Martin L Doughty ; Regina C ArmstrongSeries Type : OtherOrganism : Mus musculusDamage to long myelinated axons of white matter tracts is a hallmark pathology resulting from traumatic brain injury (TBI) forces and secondary injury processes. 4-aminopyridine (4-AP) is an FDA-approved Kv1 potassium channel inhibitor designed to mitigate axon dysfunction. We examined repurposing 4-AP as an acute TBI treatment using clinically-oriented neuropathology of axon damage combined with unbiased genome-wide spatial transcriptomics for comprehensive analysis of secondary injury processes. Adult male and female mice received a non-penetrating impact TBI with 4-AP (i.p., b.i.d) on days 1-7 post-injury. Along corpus callosum (CC) axons, TBI disrupted node of Ranvier domains, exposing the putative 4-AP target of mislocalized Kv1 channels (p < 0.005). Clinically reasonable 4-AP dosing (0.5 mg/kg) reduced nodal Nav1.6 channel loss (p < 0.05) and Caspr heminode formation (p < 0.005) after injury. Quantification of β-amyloid precursor protein immunolabeling showed significantly reduced CC axon damage at 4-AP doses of 0.5 mg/kg and 5 mg/kg (each p < 0.005). 4-AP safety, based on potential seizure risk after TBI, was unaltered with vehicle or 0.5 mg/kg 4-AP, while the 5 mg/kg dose induced seizure behavior in sham and TBI groups (p < 0.0001). Spatial transcriptomics mapped molecular signatures to tissue pathology. TBI increased axonal injury response genes in the CC and in motor and somatosensory cortex sites of CC projection neurons. TBI induced disease-associated glial phenotypes that mapped predominantly within the CC. TBI increased pathway expression for immune and vascular functions, neuron and glial cell signaling, and cellular dyshomeostasis, while reducing expression in myelination-related pathways. Gene expression analysis of 4-AP treatment (0.5 mg/kg) indicated potassium channel target engagement and increased neuroaxonal activity, along with dampened secondary injury responses. Collectively, these findings reveal underlying molecular pathology of the secondary injury response and advance 4-AP translation to reduce axon damage and stimulate activity-dependent repair after acute TBI.
  • 🔗 查看原文

6.GSE294652 人类 CAR-T 细胞样本的单细胞 RNA 测序数据

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:T cell、sequencing、single-cell
  • 📝 描述:Contributors : Yuki Okuhiro ; Yasuhiro Kojima ; Hiroyoshi NishikawaSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensRaw RNA sequencing data derived from human CAR-T cell samples are deposited in this repository. The datasets include bulk single-cell RNA-seq reads generated for research purposes.
  • 🔗 查看原文

7. GSE310017 STAT5B SH2 结构域上的疾病相关突变调节肝脏中的胆固醇和脂质代谢 [RNA-Seq 肝脏]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:metabolism、RNA-seq
  • 📝 描述:Contributor : Hye Kyung LeeSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusGrowth hormone (GH) signaling through STAT5B is a central regulator of hepatic metabolism, yet the functional consequences of disease-associated STAT5B variants remain poorly understood. Here, we generated mice carrying STAT5BY665F (gain-of-function) and STAT5BY665H (loss-of-function) alleles using CRISPR/Cas9-mediated base editing to dissect their impact on metabolic regulation. STAT5BY665F mutants developed hepatic lipid accumulation, hypercholesterolemia, and enhanced insulin sensitivity, whereas STAT5BY665H mice displayed reduced body weight and impaired insulin responsiveness. Transcriptomic analyses revealed that STAT5BY665F strongly activated lipid, cholesterol, and immune transcriptional programs, while STAT5BY665H failed to induce these pathways. ChIP-seq demonstrated extensive STAT5BY665F enhancer occupancy at metabolic and immune loci, contrasting with the minimal chromatin engagement of STAT5BY665H. Beyond the liver, STAT5BY665F broadly reprogrammed adipose tissue gene expression, activating lipid metabolism and immune regulatory networks, whereas STAT5BY665H exerted more restricted effects. Notably, transcriptional and chromatin remodeling by STAT5B variants displayed sex-dependent differences, with male livers showing more pronounced reprogramming than females. Together, these findings illustrate how alterations in STAT5B activity that alter enhancer activation led to altered metabolic function in liver and adipose tissue.
  • 🔗 查看原文

8. GSE309955 STAT5B SH2 结构域上的疾病相关突变调节肝脏中的胆固醇和脂质代谢 [RNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:metabolism、RNA-seq
  • 📝 描述:Contributor : Hye Kyung LeeSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusGrowth hormone (GH) signaling through STAT5B is a central regulator of hepatic metabolism, yet the functional consequences of disease-associated STAT5B variants remain poorly understood. Here, we generated mice carrying STAT5BY665F (gain-of-function) and STAT5BY665H (loss-of-function) alleles using CRISPR/Cas9-mediated base editing to dissect their impact on metabolic regulation. STAT5BY665F mutants developed hepatic lipid accumulation, hypercholesterolemia, and enhanced insulin sensitivity, whereas STAT5BY665H mice displayed reduced body weight and impaired insulin responsiveness. Transcriptomic analyses revealed that STAT5BY665F strongly activated lipid, cholesterol, and immune transcriptional programs, while STAT5BY665H failed to induce these pathways. ChIP-seq demonstrated extensive STAT5BY665F enhancer occupancy at metabolic and immune loci, contrasting with the minimal chromatin engagement of STAT5BY665H. Beyond the liver, STAT5BY665F broadly reprogrammed adipose tissue gene expression, activating lipid metabolism and immune regulatory networks, whereas STAT5BY665H exerted more restricted effects. Notably, transcriptional and chromatin remodeling by STAT5B variants displayed sex-dependent differences, with male livers showing more pronounced reprogramming than females. Together, these findings illustrate how alterations in STAT5B activity that alter enhancer activation led to altered metabolic function in liver and adipose tissue.
  • 🔗 查看原文

9. GSE309954 STAT5B SH2 结构域上的疾病相关突变调节肝脏中的胆固醇和脂质代谢 [ChIP-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:metabolism、ChIP-seq
  • 📝 描述:Contributor : Hye Kyung LeeSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Mus musculusGrowth hormone (GH) signaling through STAT5B is a central regulator of hepatic metabolism, yet the functional consequences of disease-associated STAT5B variants remain poorly understood. Here, we generated mice carrying STAT5BY665F (gain-of-function) and STAT5BY665H (loss-of-function) alleles using CRISPR/Cas9-mediated base editing to dissect their impact on metabolic regulation. STAT5BY665F mutants developed hepatic lipid accumulation, hypercholesterolemia, and enhanced insulin sensitivity, whereas STAT5BY665H mice displayed reduced body weight and impaired insulin responsiveness. Transcriptomic analyses revealed that STAT5BY665F strongly activated lipid, cholesterol, and immune transcriptional programs, while STAT5BY665H failed to induce these pathways. ChIP-seq demonstrated extensive STAT5BY665F enhancer occupancy at metabolic and immune loci, contrasting with the minimal chromatin engagement of STAT5BY665H. Beyond the liver, STAT5BY665F broadly reprogrammed adipose tissue gene expression, activating lipid metabolism and immune regulatory networks, whereas STAT5BY665H exerted more restricted effects. Notably, transcriptional and chromatin remodeling by STAT5B variants displayed sex-dependent differences, with male livers showing more pronounced reprogramming than females. Together, these findings illustrate how alterations in STAT5B activity that alter enhancer activation led to altered metabolic function in liver and adipose tissue.
  • 🔗 查看原文

10. GSE301206 组蛋白乳酸化介导的血管平滑肌细胞代谢重塑通过促进乳酸积累加剧主动脉瘤和主动脉夹层。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:metabolic、histone
  • 📝 描述:Contributors : Liwei Liu ; Aijun Sun ; Junbo GeSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Homo sapiensThe phenotypic switch of vascular smooth muscle cells (VSMCs) is a crucial pathogenesis in aortic aneurysm and dissection (AAD), metabolic remodeling from oxidative phosphorylation (OXPHOS) to glycolysis involved in the process. Histone lactylation expression was analyzed in aorta of aortic aneurysm (AA) patients and AAD mice, as well as the AngII(angiotensin II)-treated VSMCs. CUT&Tag was used to explore the downstream target gene for H4K16 lactylation (H4K16la) between AngII-induced VSMCs and Control. The finding was to explore the impact of histone lactylation (H4K16la) on the progress of AAD.
  • 🔗 查看原文

💡 该来源还有 48 条内容,详见 文末

🧪 博客更新 (3条)

详细内容(全部3条)

1. MEBOCOST——利用单细胞RNA测序绘制代谢物介导的细胞间通讯图谱

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:RNA-seq、single-cell
  • 📝 描述:Using RNA sequencing and metabolic modeling, researchers developed MEBOCOST to map metabolite driven cell communication, revealing new insights into adipose tissue biology…
  • 🔗 查看原文

2. 科学家发现一种能够使衰老脑细胞恢复活力的蛋白质

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:aging
  • 📝 描述:A newly identified protein may hold the key to rejuvenating aging brain cells. Researchers found that boosting DMTF1 can restore the ability of neural stem cells to regenerate, even when age-related damage has set in. Without it, these cells struggle to renew and support memory and learning. The findings raise hopes for treatments that could slow or even reverse aspects of brain aging.
  • 🔗 查看原文

3. 小行星贝努揭示了生命化学的新途径

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:pathway
  • 📝 描述:Dust from asteroid Bennu is revealing a surprising origin story for life’s building blocks. New research suggests some amino acids formed in frozen ice exposed to radiation, not warm liquid water as scientists long believed. Isotopic clues show Bennu’s chemistry differs sharply from well-studied meteorites, pointing to multiple pathways for creating life’s ingredients.
  • 🔗 查看原文

📊 关键词统计

关键词出现次数
RNA-seq10
cancer6
spatial6
single-cell5
metabolism5
ATAC-seq5
sequencing5
ChIP-seq4
tumor3
pathway3
regex:onco(logylogist
scRNA3
KRAS3
metabolic3
transcriptome3
antibody3
T cell3
immunity2
histone2
kinase2

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🧬 数据前沿 其他内容 (48条)

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