科研日报 2026-03-27

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📅 Daily Report - 2026-03-27

今日筛选出 63 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: SETD2调控组蛋白H3K36三甲基化,重塑肠道干细胞表观遗传景观,调控脂质代谢并延缓细胞衰老。

主要方向

  • 肠道干细胞 (ISC) 衰老与脂质代谢调控
  • 肿瘤免疫治疗中的T细胞功能与线粒体潜力
  • 胰腺癌腹膜转移的转录及调控机制
  • 结直肠癌、骨髓瘤、急性髓系白血病等多种癌症的表观遗传调控与治疗靶点发现
  • 免疫检查点抑制剂 (ICI) 疗效提升机制

技术亮点

  • ATAC-seq、CUT&Tag、scRNA-seq、scATAC-seq、RNA-seq、ChIP-seq等高通量测序技术在多维度解析基因组功能和转录调控中的综合应用。
  • Patient-derived orthotopic xenograft (PDOX) 模型用于模拟和研究癌症转移。
  • Perturb-seq与计算建模结合,用于鉴定癌症治疗靶点。

🧪 博客更新

今日焦点: 重磅发现揭示二甲双胍作用于大脑的新通路;解析小细胞肺癌复发机制,发现关键蛋白丢失诱发肿瘤转移。

主要方向

  • 揭示二甲双胍通过大脑调控血糖的新机制。
  • 阐明小细胞肺癌关键蛋白丢失与肿瘤复发、转移的关系。

技术亮点

  • 首次发现二甲双胍在大脑中关闭关键蛋白、激活特定神经元的作用。
  • 识别出小细胞肺癌中,特定蛋白缺失触发炎症反应促进肿瘤生长的分子机制。

📚 分类浏览

🧬 数据前沿 (61条)

详细内容(前10条)

1.GSE292017 SETD2 对组蛋白 3 赖氨酸 36 的三甲基化作用塑造肠道干细胞的表观遗传图谱,从而调控脂质代谢并防止细胞衰老 [ATAC-seq II]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:metabolism、ATAC-seq、epigenetic、histone、regex:intestin(e|al)
  • 📝 描述:Contributors : Yue Xu ; Ziyi WangSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Mus musculusThe self-renewal capacity of intestinal stem cells (ISCs) declines with aging, leading to a loss of homeostasis and an increased susceptibility to intestinal diseases. Despite the established significance of lipid metabolism and epigenetic regulation in ISC function, the molecular mechanisms that connect these processes to aging-related ISC dysfunction remain elusive. Here, we demonstrate that Histone 3 lysine 36 trimethylation (H3K36me3) caused by SETD2 is critical for ISC stemness. We found that H3K36me3 deficiency results in reduced ISC proliferation and differentiation, disrupts fatty acid oxidation (FAO) metabolism, and induces ISC senescence. Mechanistically, the loss of H3K36me3 triggers the activity of the SWI/SNF chromatin remodeling complex and leads to increased chromatin accessibility and enhancer activation, which alters FAO- and senescence-related gene expression. Importantly, we discover that metabolic intervention can prevent the senescence of ISC due to H3K36me3 deficiency. Our findings reveal a crucial role for H3K36me3 in maintaining the epigenetic landscape that orchestrates FAO metabolism and determines intestinal stem cell functions, emphasizing the role of FAO as a key modulator between H3K36me3 and ISC aging, suggesting that metabolic intervention may help mitigate age-related ISC dysfunction.
  • 🔗 查看原文

2.GSE292016 SETD2 对组蛋白 3 赖氨酸 36 的三甲基化作用塑造肠道干细胞的表观遗传图谱,从而调控脂质代谢并防止细胞衰老 [ATAC-seq I]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:metabolism、ATAC-seq、epigenetic、histone、regex:intestin(e|al)
  • 📝 描述:Contributors : Yue Xu ; Ziyi WangSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Mus musculusThe self-renewal capacity of intestinal stem cells (ISCs) declines with aging, leading to a loss of homeostasis and an increased susceptibility to intestinal diseases. Despite the established significance of lipid metabolism and epigenetic regulation in ISC function, the molecular mechanisms that connect these processes to aging-related ISC dysfunction remain elusive. Here, we demonstrate that Histone 3 lysine 36 trimethylation (H3K36me3) caused by SETD2 is critical for ISC stemness. We found that H3K36me3 deficiency results in reduced ISC proliferation and differentiation, disrupts fatty acid oxidation (FAO) metabolism, and induces ISC senescence. Mechanistically, the loss of H3K36me3 triggers the activity of the SWI/SNF chromatin remodeling complex and leads to increased chromatin accessibility and enhancer activation, which alters FAO- and senescence-related gene expression. Importantly, we discover that metabolic intervention can prevent the senescence of ISC due to H3K36me3 deficiency. Our findings reveal a crucial role for H3K36me3 in maintaining the epigenetic landscape that orchestrates FAO metabolism and determines intestinal stem cell functions, emphasizing the role of FAO as a key modulator between H3K36me3 and ISC aging, suggesting that metabolic intervention may help mitigate age-related ISC dysfunction.
  • 🔗 查看原文

3.GSE292892 SETD2 对组蛋白 3 赖氨酸 36 的三甲基化作用塑造了肠道干细胞的表观遗传景观,从而协调脂质代谢并防止细胞衰老。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:metabolism、epigenetic、histone、regex:intestin(e|al)
  • 📝 描述:Contributors : Yue Xu ; Ziyi WangSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusThe self-renewal capacity of intestinal stem cells (ISCs) declines with aging, leading to a loss of homeostasis and an increased susceptibility to intestinal diseases. Despite the established significance of lipid metabolism and epigenetic regulation in ISC function, the molecular mechanisms that connect these processes to aging-related ISC dysfunction remain elusive. Here, we demonstrate that Histone 3 lysine 36 trimethylation (H3K36me3) caused by SETD2 is critical for ISC stemness. We found that H3K36me3 deficiency results in reduced ISC proliferation and differentiation, disrupts fatty acid oxidation (FAO) metabolism, and induces ISC senescence. Mechanistically, the loss of H3K36me3 triggers the activity of the SWI/SNF chromatin remodeling complex and leads to increased chromatin accessibility and enhancer activation, which alters FAO- and senescence-related gene expression. Importantly, we discover that metabolic intervention can prevent the senescence of ISC due to H3K36me3 deficiency. Our findings reveal a crucial role for H3K36me3 in maintaining the epigenetic landscape that orchestrates FAO metabolism and determines intestinal stem cell functions, emphasizing the role of FAO as a key modulator between H3K36me3 and ISC aging, suggesting that metabolic intervention may help mitigate age-related ISC dysfunction.
  • 🔗 查看原文

4.GSE292018 SETD2 对组蛋白 3 赖氨酸 36 的三甲基化作用塑造肠道干细胞的表观遗传图谱,从而调控脂质代谢并防止细胞衰老 [CUT&Tag]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:metabolism、epigenetic、histone、regex:intestin(e|al)
  • 📝 描述:Contributors : Yue Xu ; Ziyi WangSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Mus musculusThe self-renewal capacity of intestinal stem cells (ISCs) declines with aging, leading to a loss of homeostasis and an increased susceptibility to intestinal diseases. Despite the established significance of lipid metabolism and epigenetic regulation in ISC function, the molecular mechanisms that connect these processes to aging-related ISC dysfunction remain elusive. Here, we demonstrate that Histone 3 lysine 36 trimethylation (H3K36me3) caused by SETD2 is critical for ISC stemness. We found that H3K36me3 deficiency results in reduced ISC proliferation and differentiation, disrupts fatty acid oxidation (FAO) metabolism, and induces ISC senescence. Mechanistically, the loss of H3K36me3 triggers the activity of the SWI/SNF chromatin remodeling complex and leads to increased chromatin accessibility and enhancer activation, which alters FAO- and senescence-related gene expression. Importantly, we discover that metabolic intervention can prevent the senescence of ISC due to H3K36me3 deficiency. Our findings reveal a crucial role for H3K36me3 in maintaining the epigenetic landscape that orchestrates FAO metabolism and determines intestinal stem cell functions, emphasizing the role of FAO as a key modulator between H3K36me3 and ISC aging, suggesting that metabolic intervention may help mitigate age-related ISC dysfunction.
  • 🔗 查看原文

5.GSE315510 线粒体潜能作为癌症免疫治疗中T细胞活力和功能的生物标志物

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、T cell、regex:immuno(logy|therapy|suppression)
  • 📝 描述:Contributors : Paul L Lindau ; Jeffrey C Rathmell ; Kathryn E BeckermannSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensCheckpoint inhibitors have transformed cancer treatment, yet predicting responses remains challenging. Mitochondrial quality decreases in tumor infiltrating lymphocytes and correlates with impaired anti-tumor immunity in animal models. Mitochondrial membrane potential (MMP) increases with T cell activation but may also indicate cellular dysfunction. Here we assessed the MMP of tumor-associated T cells as an indicator of cell phenotypes and immunotherapy responses in Non-Small Cell Lung Carinoma and clear cell Renal Cell Carcinoma patients. Primary tumors were collected followed by analysis of peripheral blood mononuclear cells (PBMC) prior to and after three weeks on treatment with immune checkpoint inhibition (ICI). PBMC T cells were analyzed for MMP using tetramethylrhodamine ethyl ester (TMRE) and sorted into high and low populations. TCRβ and single cell RNA sequencing of primary tumors identified and characterized peripheral blood T cell clones associated with the tumor microenvironment. As anticipated, ICI therapy increased the frequency of effector T cells in patients who experienced clinical benefit. TMREhigh peripheral blood T cells with tumor-matching TCRβ sequences had elevated oxidative phosphorylation gene signatures. Gene signatures of stress and exhaustion, such as Tigit and Cmc1, were also elevated in the TMREhigh CD8 T cell populations while gene expression patterns in TMRElow cells suggested mitochondrial fitness and cell longevity. Importantly, clinical benefit from ICI was negatively correlated with the TMREhigh CD8 T cell gene expression signature. These findings highlight the presence of a T cell population of with elevated MMP that correlates with T cell exhaustion-like states and failed response to immunotherapy.
  • 🔗 查看原文

6. GSE318600 银屑病样疾病通过中性粒细胞驱动的炎症反应阻止鳞状皮肤肿瘤的发生

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、inflammation
  • 📝 描述:Contributors : Panagiota Tsokkou ; Martin Holcmann ; Katharina Rindler ; Kamil Mieczkowski ; Lisa Shaw ; Matthias Farlik ; Maria Sibilia ; Erwin F WagnerSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusPsoriasis is a chronic inflammatory skin disease affecting millions of people worldwide. Although growing evidence links chronic inflammation with increased cancer risk, the association between psoriasis and cutaneous squamous cell carcinoma (cSCC) is still elusive. Using cell transplantation and chemical-induced models of cSCC combined with inducible genetically engineered mouse models (GEMMs) of psoriasis, we investigated how chronic skin and systemic inflammation affects squamous skin tumor initiation and progression. Here we show that in the context of severe psoriasis-like disease, neutrophil-dependent inflammation prevents squamous skin tumor development. Cellular and molecular analyses of psoriasis-like skin at the tumor initiation stage revealed a marked infiltration of CD54–expressing neutrophils, associated with the release of cytotoxic granules and neutrophil extracellular traps (NETs), as well as enhanced senescence and the expression of senescence-associated secretory phenotype (SASP) in keratinocytes. Furthermore, single-cell RNA sequencing demonstrated that inflammatory N1-like neutrophils mediate re-programming of the cell-cell communication networks, while keratinocytes displayed diminished responsiveness to mitogenic signals, including EGF and WNT. Importantly, neutrophil depletion ameliorated psoriasis-like inflammation, abolished the senescence-like phenotype in keratinocytes and restored tumor growth. We propose that the release of neutrophil granules and NETs in psoriasis-like skin eliminate tumor cells and/or mediate oxidative and inflammatory stress-induced senescence in keratinocytes, thereby preventing tumor growth. Taken together, we have defined an innate control of skin tumorigenesis in psoriasis-like disease, which will be relevant for developing cancer prevention strategies.
  • 🔗 查看原文

7. GSE318413 Patient-derived orthotopic xenograft models recapitulate the peritoneal dissemination of pancreatic cancer and delineate its transcriptional and regulatory programs [scRNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、scRNA
  • 📝 描述:Contributors : Takaaki Furukawa ; Kohei Kumegawa ; Reo MaruyamaSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensBACKGROUND & AIMS: The mechanisms of peritoneal dissemination in pancreatic ductal adenocarcinoma (PDAC) remain unclear partly owing to the lack of patient-derived models that recapitulate this process. This study aimed to establish an orthotopic model of PDAC peritoneal dissemination and to uncover the transcriptional and regulatory programs underlying this process.METHODS: Organoids were established from primary pancreatic tumors and malignant effusions of patients with PDAC and orthotopically transplanted into the pancreas of immunodeficient mice to generate patient-derived orthotopic xenograft (PDOX) models. Subsequently, the organoids were rederived from pancreatic and peritoneal lesions of a representative model (PDOX12) and orthotopically reimplanted to assess the dissemination capacity. Single-nucleus RNA sequencing (snRNA-seq) and single-cell ATAC sequencing (scATAC-seq) were performed to analyze the tumors from these models.RESULTS: The organoids that were derived from malignant effusions reproducibly generated peritoneal metastases after orthotopic implantation. To dissect this process more precisely, we focused on one representative model (PDOX12) and rederived organoids from its pancreatic and peritoneal lesions. These organoids generated matched PDOX models that differed only in dissemination potential when reimplanted orthotopically. The results of snRNA-seq revealed a distinct subpopulation enriched in the high-dissemination model, which was characterized by the coordinated activation of genes involved in cytoskeletal dynamics, extracellular matrix remodeling, and plasticity-related signaling—suggesting a dissemination-primed state. Integration with scATAC-seq identified STAT3, SMAD3, and SOX2 as potential upstream regulators of this gene program.CONCLUSIONS: This study established PDOX models that isolate the peritoneal dissemination phenotype and reveal the transcriptional and regulatory programs driving this process.
  • 🔗 查看原文

8. GSE318412 患者来源的原位异种移植模型重现了胰腺癌的腹膜播散,并阐明了其转录和调控程序 [scATAC-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、scATAC
  • 📝 描述:Contributors : Takaaki Furukawa ; Kohei Kumegawa ; Reo MaruyamaSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Homo sapiensBACKGROUND & AIMS: The mechanisms of peritoneal dissemination in pancreatic ductal adenocarcinoma (PDAC) remain unclear partly owing to the lack of patient-derived models that recapitulate this process. This study aimed to establish an orthotopic model of PDAC peritoneal dissemination and to uncover the transcriptional and regulatory programs underlying this process.METHODS: Organoids were established from primary pancreatic tumors and malignant effusions of patients with PDAC and orthotopically transplanted into the pancreas of immunodeficient mice to generate patient-derived orthotopic xenograft (PDOX) models. Subsequently, the organoids were rederived from pancreatic and peritoneal lesions of a representative model (PDOX12) and orthotopically reimplanted to assess the dissemination capacity. Single-nucleus RNA sequencing (snRNA-seq) and single-cell ATAC sequencing (scATAC-seq) were performed to analyze the tumors from these models.RESULTS: The organoids that were derived from malignant effusions reproducibly generated peritoneal metastases after orthotopic implantation. To dissect this process more precisely, we focused on one representative model (PDOX12) and rederived organoids from its pancreatic and peritoneal lesions. These organoids generated matched PDOX models that differed only in dissemination potential when reimplanted orthotopically. The results of snRNA-seq revealed a distinct subpopulation enriched in the high-dissemination model, which was characterized by the coordinated activation of genes involved in cytoskeletal dynamics, extracellular matrix remodeling, and plasticity-related signaling—suggesting a dissemination-primed state. Integration with scATAC-seq identified STAT3, SMAD3, and SOX2 as potential upstream regulators of this gene program.CONCLUSIONS: This study established PDOX models that isolate the peritoneal dissemination phenotype and reveal the transcriptional and regulatory programs driving this process.
  • 🔗 查看原文

9. GSE318411 患者来源的原位异种移植模型重现了胰腺癌的腹膜播散,并阐明了其转录和调控程序 [RNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、RNA-seq
  • 📝 描述:Contributors : Takaaki Furukawa ; Kohei Kumegawa ; Reo MaruyamaSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensBACKGROUND & AIMS: The mechanisms of peritoneal dissemination in pancreatic ductal adenocarcinoma (PDAC) remain unclear partly owing to the lack of patient-derived models that recapitulate this process. This study aimed to establish an orthotopic model of PDAC peritoneal dissemination and to uncover the transcriptional and regulatory programs underlying this process.METHODS: Organoids were established from primary pancreatic tumors and malignant effusions of patients with PDAC and orthotopically transplanted into the pancreas of immunodeficient mice to generate patient-derived orthotopic xenograft (PDOX) models. Subsequently, the organoids were rederived from pancreatic and peritoneal lesions of a representative model (PDOX12) and orthotopically reimplanted to assess the dissemination capacity. Single-nucleus RNA sequencing (snRNA-seq) and single-cell ATAC sequencing (scATAC-seq) were performed to analyze the tumors from these models.RESULTS: The organoids that were derived from malignant effusions reproducibly generated peritoneal metastases after orthotopic implantation. To dissect this process more precisely, we focused on one representative model (PDOX12) and rederived organoids from its pancreatic and peritoneal lesions. These organoids generated matched PDOX models that differed only in dissemination potential when reimplanted orthotopically. The results of snRNA-seq revealed a distinct subpopulation enriched in the high-dissemination model, which was characterized by the coordinated activation of genes involved in cytoskeletal dynamics, extracellular matrix remodeling, and plasticity-related signaling—suggesting a dissemination-primed state. Integration with scATAC-seq identified STAT3, SMAD3, and SOX2 as potential upstream regulators of this gene program.CONCLUSIONS: This study established PDOX models that isolate the peritoneal dissemination phenotype and reveal the transcriptional and regulatory programs driving this process.
  • 🔗 查看原文

10. GSE317930 PD-1 信号传导和抗 PD-1 抗体介导的肿瘤控制在微绒毛 T 细胞接触处建立。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、antibody
  • 📝 描述:Contributors : Sumana Sharma ; Yuan Lui ; Martin Fellermeyer ; Edward JenkinsSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusTo investigate the differences between nivolumab_mIgG1 and nivolumab_mIgG1_D265A, and to identify the context in which antibody agonism might impact therapy, we employed a single-cell RNA sequencing approach using 10x Genomics to study the immune populations of tumors, and draining lymph nodes (dLN), and non-draining lymph nodes (non-dLN).
  • 🔗 查看原文

💡 该来源还有 51 条内容,详见 文末

🧪 博客更新 (2条)

详细内容(全部2条)

1. 二甲双胍的隐秘脑通路在60年后被揭示

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:pathway
  • 📝 描述:A major discovery reveals that metformin works not just in the body, but in the brain. By switching off a key protein and activating specific neurons, the drug lowers blood sugar through a previously hidden pathway, opening new doors for diabetes treatment.
  • 🔗 查看原文

2. 科学家发现这种致命肺癌为何会反复复发。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer
  • 📝 描述:Scientists have discovered that losing a key protein in small cell lung cancer triggers inflammation that actually helps tumors grow and spread. Even more surprising, it pushes cancer cells into a more aggressive, neuron-like state linked to relapse.
  • 🔗 查看原文

📊 关键词统计

关键词出现次数
RNA-seq9
cancer6
metabolism6
KRAS6
histone6
epigenetic6
tumor4
immune4
regex:intestin(eal)
sequencing4
metabolic4
ChIP-seq4
kinase4
T cell3
genome3
cardiac3
scRNA2
regex:immuno(logytherapy
pathway2
leukemia2

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🧬 数据前沿 其他内容 (51条)

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