科研日报 2026-02-20

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📅 Daily Report - 2026-02-20

今日筛选出 115 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: 空间转录组学在肿瘤细胞命运决定(神经母细胞瘤淋巴结转移)及肠道损伤机制解析中取得突破,揭示了细胞异质性、分化及通讯机制。

主要方向

  • 肿瘤微环境调控与免疫治疗:研究ALOX15B在弥漫大B细胞淋巴瘤中的免疫抑制作用,以及METTL5在增强肿瘤免疫反应中的作用。
  • 癌症发生与进展机制:探索神经母细胞瘤转移的转录调控,以及COL1A2在乳腺癌耐药性中的预测作用。
  • 肠道健康与疾病:利用单核/空间转录组学解析SAP诱导的肠道损伤机制,以及母体肠道菌群对后代肠道健康的影响。

技术亮点

  • 空间转录组学与单核转录组学:结合多组学技术,实现对肿瘤、肠道等复杂组织中细胞异质性、空间分布及功能状态的精细解析。

🧪 博客更新

今日焦点: 一项突破性研究发现,带状疱疹疫苗在对抗阿尔茨海默病方面展现出惊人潜力。

主要方向

  • 利用现有药物(如西地那非、带状疱疹疫苗)开发阿尔茨海默病新疗法。
  • 研发新型HPV疫苗,通过重排HPV蛋白片段训练T细胞靶向癌细胞。

技术亮点

  • 探索DNA纳米结构在重排抗原片段中的应用,提升癌症疫苗效能。
  • 对比分析液滴与皮升级单细胞转录组测序平台在保存细胞类型和数据质量方面的差异。

📚 分类浏览

🧬 数据前沿 (112条)

详细内容(前10条)

1.GSE309269 神经母细胞瘤淋巴结转移中决定肿瘤细胞命运的转录程序[空间转录组学]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、lymph、regex:lymph(o|atic)?、spatial、spatial transcriptomics、transcriptomics
  • 📝 描述:Contributors : Natalie Wu ; Richard LuSeries Type : OtherOrganism : Homo sapiensNeuroblastoma, a deadly pediatric cancer from the sympathetic ganglia of the peripheral nervous system, frequently metastasizes, driving poor outcomes in high-risk cases. While primary tumors are well-characterized, the cellular and molecular dynamics of metastasis remain poorly understood. Here, we employed single-cell multi-omics and spatial transcriptomics to profile lymph node metastases in high-risk neuroblastoma compared to primary adrenal masses. We found that lymph node metastases displayed unique cellular heterogeneity and plasticity marked by a shift toward mesenchymal-like and cancer stem cell states, with enriched epithelial-to-mesenchymal transition (EMT) programs. Lymph node metastatic niche exhibited altered tumor microenvironment dynamics, characterized by increased immunosuppressive myeloid subsets, heightened immune checkpoint signaling and lymphocyte exhaustion, indicative of immune evasion and dysfunction. Our multi-omics studies reveal distinct features of high-risk neuroblastoma that contribute to metastasis and therapy resistance, pointing to potential therapeutic vulnerabilities of the aggressive metastatic disease.
  • 🔗 查看原文

2.GSE294509 ALOX15B 低表达通过 TAP1/MHC-I 轴调节弥漫性大 B 细胞淋巴瘤中的免疫抑制性肿瘤微环境

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、lymphoma、tumor microenvironment、B cell、MHC
  • 📝 描述:Contributors : Lanxin Zhang ; Yucui ShangSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusThe arachidonic acid (AA) metabolism is closely related to tumor immune evasion and chemo-resistance. ALOX15B (arachidonate 15-lipoxygenase type B), located on chromosome 17p, encodes a key enzyme in AA pathway. Interestingly, the expression of ALOX15B is independent of 17p status but is epigenetically regulated. Low ALOX15B expression predicts poor prognosis, with PGE2 activation and TAP1 suppression, reducing MHC-I expression and creating an immunosuppressive microenvironment. Tucidinostat, a histone deacetylase (HDAC) inhibitor, restores ALOX15B and enhances the TAP1/MHC-I axis, thus promoting lymphoma cell apoptosis, which correlates with the effect of tucidinostat plus immunochemotherapy in a phase II trial of patients with newly diagnosed DLBCL (NCT02753647). Our study provides insight into a novel therapeutic strategy to improve patient prognosis by epigenetically modulating lymphoma metabolism and optimizing the tumor microenvironment.
  • 🔗 查看原文

3.GSE317063 单核和空间转录组学揭示 SAP 诱导的肠道损伤中肠道细胞异质性、分化和细胞通讯机制

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:spatial、spatial transcriptomics、transcriptomics、regex:intestin(e|al)
  • 📝 描述:Series Type : Expression profiling by high throughput sequencing ; OtherOrganism : Rattus norvegicusThis SuperSeries is composed of the SubSeries listed below.
  • 🔗 查看原文

4.GSE317062 单核和空间转录组学揭示 SAP 诱导的肠道损伤中肠道细胞异质性、分化和细胞通讯机制 [空间转录组学]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:spatial、spatial transcriptomics、transcriptomics、regex:intestin(e|al)
  • 📝 描述:Contributors : Lechang Zhang ; Changqin Xu ; Tong Su ; Tong Xiao ; Xu Yi ; Yuemin Feng ; Jing Wang ; Shulei ZhaoSeries Type : OtherOrganism : Rattus norvegicusBackground Acute pancreatitis (AP) is a severe inflammatory disease that frequently causes multi-organ damage, with intestinal injury being a major complication. The mechanisms underlying SAP-induced intestinal injury remain unclear, particularly regarding spatial cellular reorganization and functional interactions. Methods This study constructed a severe acute pancreatitis (SAP) rat model and employed single-nucleus RNA sequencing (snRNA-seq) and spatial transcriptome sequencing (stRNA-seq) technologies to systematically analyze the dynamic changes in intestinal cellular composition, spatial distribution, and function during SAP-induced intestinal injury. Results snRNA-seq identified 18 major ileal cell populations spanning epithelial, immune, stem/TA, and stromal compartments. SAP was associated with compositional remodeling characterized by downward trends in Lgr5⁺/Olfm4⁺ stem cells, TA1, goblet cells, and Paneth cells, with a reciprocal increase in enterocytes, although most proportion changes did not reach statistical significance at the animal level. Spatial transcriptomics independently captured SAP-associated tissue remodeling, including a significant reduction in Paneth cells accompanied by increases in fat cells, macrophages, goblet cells, and TA2 cells. Across epithelial lineages, SAP induced a transcriptional shift toward immune interaction with up-regulation of antigen presentation–related genes (e.g., Cd74, Apoa1) and down-regulation of antimicrobial/barrier effectors (e.g., Defa24, Pla2g2a, Dmbt1), which was corroborated by spatial expression patterns and spatially variable gene programs enriched for host defense responses. Pseudotime analysis suggested a redistribution of epithelial states along the stem/TA-to-enterocyte continuum, with relative depletion of early states and expansion of enterocyte-dominant states in SAP. CellChat analysis revealed globally intensified intercellular communication and nominated FN1 as the pathway with the highest differential information flow, with Lgr5⁺ stem cells predicted as prominent FN1 senders targeting enterocytes and smooth muscle cells. SCENIC identified reduced activity and expression of Hmga2/Myb regulons in stem compartments, and immunofluorescence showed decreasing trends in Hmga2/Myb-positive Olfm4⁺ and Lgr5⁺ stem cells in SAP. Conclusion…
  • 🔗 查看原文

5.GSE317060 单核和空间转录组学揭示 SAP 诱导的肠道损伤中肠道细胞异质性、分化和细胞通讯机制 [snRNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:spatial、spatial transcriptomics、transcriptomics、regex:intestin(e|al)
  • 📝 描述:Contributors : Lechang Zhang ; Changqin Xu ; Tong Su ; Tong Xiao ; Xu Yi ; Yuemin Feng ; Jing Wang ; Shulei ZhaoSeries Type : Expression profiling by high throughput sequencingOrganism : Rattus norvegicusBackground Acute pancreatitis (AP) is a severe inflammatory disease that frequently causes multi-organ damage, with intestinal injury being a major complication. The mechanisms underlying SAP-induced intestinal injury remain unclear, particularly regarding spatial cellular reorganization and functional interactions. Methods This study constructed a severe acute pancreatitis (SAP) rat model and employed single-nucleus RNA sequencing (snRNA-seq) and spatial transcriptome sequencing (stRNA-seq) technologies to systematically analyze the dynamic changes in intestinal cellular composition, spatial distribution, and function during SAP-induced intestinal injury. Results snRNA-seq identified 18 major ileal cell populations spanning epithelial, immune, stem/TA, and stromal compartments. SAP was associated with compositional remodeling characterized by downward trends in Lgr5⁺/Olfm4⁺ stem cells, TA1, goblet cells, and Paneth cells, with a reciprocal increase in enterocytes, although most proportion changes did not reach statistical significance at the animal level. Spatial transcriptomics independently captured SAP-associated tissue remodeling, including a significant reduction in Paneth cells accompanied by increases in fat cells, macrophages, goblet cells, and TA2 cells. Across epithelial lineages, SAP induced a transcriptional shift toward immune interaction with up-regulation of antigen presentation–related genes (e.g., Cd74, Apoa1) and down-regulation of antimicrobial/barrier effectors (e.g., Defa24, Pla2g2a, Dmbt1), which was corroborated by spatial expression patterns and spatially variable gene programs enriched for host defense responses. Pseudotime analysis suggested a redistribution of epithelial states along the stem/TA-to-enterocyte continuum, with relative depletion of early states and expansion of enterocyte-dominant states in SAP. CellChat analysis revealed globally intensified intercellular communication and nominated FN1 as the pathway with the highest differential information flow, with Lgr5⁺ stem cells predicted as prominent FN1 senders targeting enterocytes and smooth muscle cells. SCENIC identified reduced activity and expression of Hmga2/Myb regulons in stem compartments, and immunofluorescence showed decreasing trends in Hmga2/Myb-positive O…
  • 🔗 查看原文

6.GSE309268 神经母细胞瘤淋巴结转移中决定肿瘤细胞命运的转录程序[单细胞多组学]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、lymph、regex:lymph(o|atic)?、single-cell
  • 📝 描述:Contributors : Natalie Wu ; Brian Weiss ; Richard LuSeries Type : Genome binding/occupancy profiling by high throughput sequencing ; Expression profiling by high throughput sequencingOrganism : Homo sapiensNeuroblastoma, a deadly pediatric cancer from the sympathetic ganglia of the peripheral nervous system, frequently metastasizes, driving poor outcomes in high-risk cases. While primary tumors are well-characterized, the cellular and molecular dynamics of metastasis remain poorly understood. Here, we employed single-cell multi-omics and spatial transcriptomics to profile lymph node metastases in high-risk neuroblastoma compared to primary adrenal masses. We found that lymph node metastases displayed unique cellular heterogeneity and plasticity marked by a shift toward mesenchymal-like and cancer stem cell states, with enriched epithelial-to-mesenchymal transition (EMT) programs. Lymph node metastatic niche exhibited altered tumor microenvironment dynamics, characterized by increased immunosuppressive myeloid subsets, heightened immune checkpoint signaling and lymphocyte exhaustion, indicative of immune evasion and dysfunction. Our multi-omics studies reveal distinct features of high-risk neuroblastoma that contribute to metastasis and therapy resistance, pointing to potential therapeutic vulnerabilities of the aggressive metastatic disease.
  • 🔗 查看原文

7.GSE309267 神经母细胞瘤淋巴结转移中决定肿瘤细胞命运的转录程序 [批量 RNA 测序]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、lymph、regex:lymph(o|atic)?、RNA-seq
  • 📝 描述:Contributors : Natalie Wu ; Brian Weiss ; Richard LuSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensNeuroblastoma, a deadly pediatric cancer from the sympathetic ganglia of the peripheral nervous system, frequently metastasizes, driving poor outcomes in high-risk cases. While primary tumors are well-characterized, the cellular and molecular dynamics of metastasis remain poorly understood. Here, we employed single-cell multi-omics and spatial transcriptomics to profile lymph node metastases in high-risk neuroblastoma compared to primary adrenal masses. We found that lymph node metastases displayed unique cellular heterogeneity and plasticity marked by a shift toward mesenchymal-like and cancer stem cell states, with enriched epithelial-to-mesenchymal transition (EMT) programs. Lymph node metastatic niche exhibited altered tumor microenvironment dynamics, characterized by increased immunosuppressive myeloid subsets, heightened immune checkpoint signaling and lymphocyte exhaustion, indicative of immune evasion and dysfunction. Our multi-omics studies reveal distinct features of high-risk neuroblastoma that contribute to metastasis and therapy resistance, pointing to potential therapeutic vulnerabilities of the aggressive metastatic disease.
  • 🔗 查看原文

8.GSE298759 母体肠道微生物遗传影响后代肠道健康和结肠炎易感性

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:regex:micro(b|be|bial|organism)、gut、regex:gut(-?microbiome)?、regex:intestin(e|al)
  • 📝 描述:Contributors : Ji-Min Lee ; Hoyul Lee ; Eun Soo KimSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusOffspring born to mothers with colitis exhibited gut microbial dysbiosis, impaired barrier function, low-grade intestinal inflammation, compromised Wnt signaling and reduced crypt cell proliferation, which collectively increased their susceptibility to colitis in adulthood.
  • 🔗 查看原文

9.GSE299589 克隆动力学揭示癌症耐药性源于适应性程序 [RNA-Seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、resistance、RNA-seq
  • 📝 描述:Contributors : Haiyin Li ; Yeqing Chen ; Jessica Kaster ; Maggie Dunne ; Min Xiao ; Ling Li ; Monzy Thomas ; Nazifa Promi ; Dylan Fingerman ; Gregory S Brown ; Xingyue Zhu ; Meenhard HerlynSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensMost advanced cancers initially respond to targeted therapies but eventually relapse1. Rather than acquiring new mutations, resistance is driven by drug-tolerant persister cells (DTP) that enter a reversible drug-refractory state and sustain minimal residual disease2. Here, we developed MeRLin, a high-resolution barcoding platform combining single-cell RNA sequencing, RNA fluorescence in situ hybridization, and computational analyses to track clonal and transcriptional dynamics of melanoma cells during targeted therapy. Clonal tracking reveals that dominant resistant clones arise from minor pre-treatment subpopulations. The pre-treatment melanoma populations diversify into phenotypically distinct DTP subpopulations, marked by stress-like, lipid metabolism, PI3K signaling, and extracellular matrix remodeling programs associated with adaptive resistance. Spatial transcriptomics revealed the co-localization of lipid metabolism and PI3K signaling programs near the tumor boundaries, and a complex network of autocrine and paracrine interactions among DTP subpopulations. Using barcoded RNA fluorescence in situ hybridization, we identified a dominant persister subpopulation in resistant tumors marked by SLC2A1 expression. Thus, MeRLin provides a robust framework to dissect melanoma heterogeneity and uncover vulnerabilities in persister populations to improve long-term treatment efficacy.
  • 🔗 查看原文

10.GSE294261 阿尔茨海默病小鼠模型的多组学单核分析表明 ACSS2 赋予神经元抵抗 tau 蛋白病变的能力 [RNA-Seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:Alzheimer、Neuronal、RNA-seq
  • 📝 描述:Contributors : Gabor Egervari ; Desi Alexander ; Hua Huang ; Greg Donahue ; Connor Hogan ; Mariel Mendoza ; Hong Xu ; Virginia Lee ; Ben A Garcia ; Nancy M Bonini ; Shelley L BergerSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusLoss of cell identity and global epigenomic dysregulation are emerging as key contributors to Alzheimer’s disease (AD). The mechanisms by which protective or risk-conferring epigenetic marks are established and maintained are under intense investigation. ACSS2 (Acetyl-CoA Synthetase 2) is a key metabolic enzyme that is nuclear-localized in neurons. In healthy brains, ACSS2 fuels histone acetylation and drives expression of neuronal genes that regulate learning and memory. Here, we examine how loss of ACSS2 contributes to AD-associated cellular, genomic and behavioral outcomes, focusing on long-term steady state changes. Using a mouse model of human pathological AD-Tau injection, we show that loss of ACSS2 exacerbates Tau-related memory impairments, while dietary supplementation of acetate rescues learning in an ACSS2-dependent manner. Combining state-of-the-art proteomic and genomic approaches, we demonstrate that this effect is accompanied by ACSS2-dependent incorporation of acetate into hippocampal histone acetylation, which facilitates gene expression programs related to learning. We identify the most severely affected hippocampal neuronal populations, including pyramidal cells of the perforant pathway and Cajal-Retzius cells. Overall, these results reveal ACSS2 as a neuroprotective metabolic enzyme in key hippocampal neuronal populations, and dysregulation of which may play an important role in the etiology of AD. These findings may guide development of future therapies for AD, other tauopathies and related dementia.
  • 🔗 查看原文

💡 该来源还有 102 条内容,详见 文末

🧪 博客更新 (3条)

详细内容(全部3条)

1. 伟哥和带状疱疹疫苗在对抗阿尔茨海默病方面展现出令人惊讶的潜力。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:vaccine、Alzheimer
  • 📝 描述:A major new study has spotlighted three familiar medicines that could take on an unexpected new role in the fight against Alzheimer’s disease — with a shingles vaccine emerging as the front-runner. After reviewing 80 existing drugs, an international panel of experts identified Zostavax, Viagra (sildenafil), and riluzole as the most promising candidates for repurposing.
  • 🔗 查看原文

2. 这种经过重新设计的HPV疫苗可以训练T细胞来对抗癌细胞。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、vaccine
  • 📝 描述:Northwestern researchers have shown that when it comes to cancer vaccines, arrangement can be just as important as ingredients. By repositioning a small fragment of an HPV protein on a DNA-based nanovaccine, the team dramatically strengthened the immune system’s attack on HPV-driven tumors. One specific design slowed tumor growth, extended survival in animal models, and unleashed far more cancer-killing T cells than other versions made with the exact same components.
  • 🔗 查看原文

3. 液滴与皮孔——单细胞转录组分析的考量因素

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:single-cell
  • 📝 描述:A head to head comparison of single cell RNA sequencing platforms reveals how droplet and picowell methods differ in preserving epithelial cells and data quality in human colon biopsies
  • 🔗 查看原文

📊 关键词统计

关键词出现次数
cancer19
tumor18
RNA-seq15
immune11
single-cell9
spatial7
transcriptomics7
transcriptome7
spatial transcriptomics6
sequencing6
epigenetic6
T cell5
pathway5
regex:intestin(eal)
macrophage5
carcinoma4
metabolism4
methylation4
resistance3
metabolic3

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🧬 数据前沿 其他内容 (102条)

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