科研日报 2026-06-01

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📅 Daily Report - 2026-06-01

今日筛选出 64 条内容,来自 1 个来源

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🤖 今日AI智能总结

🧬 数据前沿

今日焦点: 首次实现冷冻组织切片的空间解析单细胞多组学(转录组与表观基因组)整合分析,为深入理解组织微环境提供新视角。

主要方向

  • 肿瘤微环境与基因调控:研究AML中DNMT3A突变如何调控表观遗传与翻译,以及犬/人肝癌微环境的多组学对比。
  • 衰老与转录调控:揭示衰老过程中转录活性和剪接变化驱动的基因长度偏倚重塑。
  • 免疫与肿瘤治疗:单细胞层面解析PD-1抗体治疗期间免疫细胞和胃癌细胞的基因表达谱。

技术亮点

  • 空间多组学整合:结合空间解析技术与单细胞多组学,实现对组织层面基因表达和表观遗传的精细刻画。
  • 多组学方法应用:广泛运用RNA-seq, WGBS, ATAC-seq, ChIP-seq, CUT&Run等技术,全面探究基因调控机制。

📚 分类浏览

🧬 数据前沿 (64条)

详细内容(前10条)

1.GSE327406:冷冻组织切片中转录组和表观基因组靶标的空间分辨、整合的单细胞多组学分析

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:single-cell、spatially、transcriptome
  • 📝 描述:Contributors : Ting Zhang ; Saba Farassati ; Alejandro Quiroz ; Yuanhang Liu ; Tamas Ordog ; Jeong-Heon LeeSeries Type : Expression profiling by high throughput sequencing ; Genome binding/occupancy profiling by high throughput sequencingOrganism : Homo sapiensWe present a spatial Trekker–CUT&Tag multiome protocol that combines direct spatial barcoding of a frozen tissue section with subsequent single-cell multiome analysis. This approach enables integrated single-cell and spatial profiling of histone H3K27ac modification and gene expression, revealing mechanistic and anatomical cell-type organization across the tissue.
  • 🔗 查看原文

2.GSE312281 MicroRNA-200 家族通过破坏 SOX9 功能抑制皮脂腺命运决定 [空间转录组学]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:spatial、spatial transcriptomics、transcriptomics
  • 📝 描述:Contributors : Arpan Das ; Rui YiSeries Type : OtherOrganism : Mus musculusHair follcile (HF) are known as mini-organs because of their cycling capability. They also provide an excellent system to study the developmental timeline of these appendages, regulated by multiple factors. However, how another skin appendage, sebaceous gland (SG), associated with the HFs gets specified from the HF-cells is largely unknown. Here using an integrated method we demonstrate how SOX9+ early progenitor cells regulate the fate specification of the SG.
  • 🔗 查看原文

3.GSE296563 DNMT3A 突变通过协调急性髓系白血病 (WGBS) 中的 BCAA 代谢来协调表观遗传和翻译调控

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:leukemia、metabolism、epigenetic
  • 📝 描述:Contributors : Chengyang Xu ; Yongjia Wei ; Chenxi Han ; Jian Li ; Jia Yu ; Fang WangSeries Type : Methylation profiling by high throughput sequencingOrganism : Homo sapiensAcute myeloid leukemia (AML) harboring DNMT3A mutation exhibits epigenetic dysregulation, chemoresistance and poor outcome, but the underlining mechanism remains elusive. Here, inspired by the unexpected finding that DNMT3A-mutated AML patients exhibit a unique translatome landscape, we connected this epigenetic mutation to translational dysregulation through reprogrammed branched-chain amino acid (BCAA) metabolism. Particularly, DNMT3A mutation induces DNA hypomethylation-dependent activation of BCAT1, a rate-limiting aminotransferase gene for BCAA metabolism. Thereafter, the accumulation of intracellular BCAA more profoundly alters translation of a select subset of transcripts with higher BCAA codon ratios. Accordingly, deficiency in BCAA availability reduces the translation of target genes and attenuated the proliferative advantages of DNMT3A-mutated AML cells. More importantly, the pharmacological inhibition of BCAT1 with Gabapentin normalized BCAA levels, reversed target genes translation and repressed leukemia cell growth specifically in DNMT3A-mutated AML cells. Collectively, these findings uncovered a novel epigenetics-metabolism axis, in which DNMT3A mutation boosts BCAA metabolism thereby not only forming a positive feedback loop to enhance DNA hypomethylation through alpha ketoglutarate (α-KG)-dependent ten-eleven translocation (TET) activation, but also affecting gene translation in a BCAA codon-biased manner. Moreover, the efficacy of Gabapentin in suppressing AML cell proliferation highlights the clinical relevance of targeting BCAA metabolism to improve outcomes of DNMT3A-mutated AML.
  • 🔗 查看原文

4.GSE296332 DNMT3A 突变通过调控急性髓系白血病中的支链氨基酸代谢来协调表观遗传和翻译调控

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:leukemia、metabolism、epigenetic
  • 📝 描述:Contributors : Chengyang Xu ; Yongjia Wei ; Chenxi Han ; Jian Li ; Jia Yu ; Fang WangSeries Type : Other ; Expression profiling by high throughput sequencingOrganism : Homo sapiensAcute myeloid leukemia (AML) harboring DNMT3A mutation exhibits epigenetic dysregulation, chemoresistance and poor outcome, but the underlining mechanism remains elusive. Here, inspired by the unexpected finding that DNMT3A-mutated AML patients exhibit a unique translatome landscape, we connected this epigenetic mutation to translational dysregulation through reprogrammed branched-chain amino acid (BCAA) metabolism. Particularly, DNMT3A mutation induces DNA hypomethylation-dependent activation of BCAT1, a rate-limiting aminotransferase gene for BCAA metabolism. Thereafter, the accumulation of intracellular BCAA more profoundly alters translation of a select subset of transcripts with higher BCAA codon ratios. Accordingly, deficiency in BCAA availability reduces the translation of target genes and attenuated the proliferative advantages of DNMT3A-mutated AML cells. More importantly, the pharmacological inhibition of BCAT1 with Gabapentin normalized BCAA levels, reversed target genes translation and repressed leukemia cell growth specifically in DNMT3A-mutated AML cells. Collectively, these findings uncovered a novel epigenetics-metabolism axis, in which DNMT3A mutation boosts BCAA metabolism thereby not only forming a positive feedback loop to enhance DNA hypomethylation through alpha ketoglutarate (α-KG)-dependent ten-eleven translocation (TET) activation, but also affecting gene translation in a BCAA codon-biased manner. Moreover, the efficacy of Gabapentin in suppressing AML cell proliferation highlights the clinical relevance of targeting BCAA metabolism to improve outcomes of DNMT3A-mutated AML.
  • 🔗 查看原文

5.GSE292303 犬和人肝细胞癌肿瘤微环境的多组学比较评估

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、carcinoma、tumor microenvironment
  • 📝 描述:Contributors : Yulia Nussbaum ; Edward Ricemeyer ; Wesley WarrenSeries Type : Expression profiling by high throughput sequencingOrganism : Canis lupus familiarisBackground: Liver cancer remains a leading cause of death in humans. Its primary form, hepatocellular carcinoma (HCC) is frequently resistant to chemotherapy and radiation and often shows insufficient response to immunotherapy. HCC in dogs can arise from various factors but is not typically associated with viral infections, cirrhosis, or alcohol consumption, the more common triggers of spontaneous HCC in humans. This distinction offers a unique comparative perspective on the intrinsic genetic drivers of the disease.Methods: Using whole exome sequencing (WES) and single nucleus RNA sequencing (snRNA-seq) in tandem, we perform a multi-omic analysis of the dog HCC tumor.Results: Mutational analysis of impactful polymorphisms revealed a conserved cross-species landscape with genes such as CTNNB1, known for highly recurrent mutations in human HCC, showing similar alterations in dogs. In dog HCC tumors, we identified major cell types commonly observed in human HCC, including T lymphocyte, endothelial, macrophage, fibroblast, hepatocyte, malignant, and non-specific proliferating types. A comparative analysis of intercellular interactions across human and dog HCC cell types revealed intriguing parallels, particularly in macrophage functionality.Conclusions: These findings underscore the need for expanded genetic studies of dog HCC to further elucidate cross-species commonalities, offering deeper insights into key aspects of HCC biology and identifying novel therapeutic targets.
  • 🔗 查看原文

6.GSE282096 转录活性降低和剪接变化驱动衰老转录组中基因长度偏向的重编程(RNA-Seq)

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:aging、RNA-seq、transcriptome
  • 📝 描述:Contributors : Saeid M Parast ; Madhurima Das ; Marta Iwanaszko ; Ali ShilatifardSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusTranscription by RNA polymerase II (RNAPII), which is essential for protein-coding gene expression and cellular function, is increasingly understood to become dysregulated with aging. Here, we use a multi-modal approach to comprehensively characterize age-dependent changes in RNAPII-mediated transcription in both mouse and human tissues. Short-read total RNA sequencing (RNA-seq) to profile nascent transcription reveals a global reduction in overall transcriptional activity/frequency in aged tissues, without apparent change in elongation rates. Transcriptomic analysis reveals a shift toward preferential expression of short genes in aged tissues, with notable upregulation of short stress-response genes and downregulation of long neurodevelopmental genes in the aged mouse brain. These results are recapitulated by analysis of total RNA-seq data from human tissues. Leveraging long-read RNA-seq, we determine that the representation of aberrant mono-exonic and intron-retention splice isoforms is increased in the aged mouse brain. Finally, we characterize the composition of RNAPII transcriptional machinery, finding that interactions between RNAPII and the Mediator complex are decreased in the chromatin of aged mouse liver and brain. Collectively, these analyses provide insight for future aging studies and reveal potential transcriptional control targets for anti-aging drug development.
  • 🔗 查看原文

7.GSE282010 转录活性降低和剪接变化驱动衰老转录组中基因长度偏向的重连(ChIP-seq)

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:aging、ChIP-seq、transcriptome
  • 📝 描述:Contributors : Saeid M Parast ; Madhurima Das ; Marta Iwanaszko ; Ali ShilatifardSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Mus musculusTranscription by RNA polymerase II (RNAPII), which is essential for protein-coding gene expression and cellular function, is increasingly understood to become dysregulated with aging. Here, we use a multi-modal approach to comprehensively characterize age-dependent changes in RNAPII-mediated transcription in both mouse and human tissues. Short-read total RNA sequencing (RNA-seq) to profile nascent transcription reveals a global reduction in overall transcriptional activity/frequency in aged tissues, without apparent change in elongation rates. Transcriptomic analysis reveals a shift toward preferential expression of short genes in aged tissues, with notable upregulation of short stress-response genes and downregulation of long neurodevelopmental genes in the aged mouse brain. These results are recapitulated by analysis of total RNA-seq data from human tissues. Leveraging long-read RNA-seq, we determine that the representation of aberrant mono-exonic and intron-retention splice isoforms is increased in the aged mouse brain. Finally, we characterize the composition of RNAPII transcriptional machinery, finding that interactions between RNAPII and the Mediator complex are decreased in the chromatin of aged mouse liver and brain. Collectively, these analyses provide insight for future aging studies and reveal potential transcriptional control targets for anti-aging drug development.
  • 🔗 查看原文

8.GSE234209:接受PD-1抗体治疗的2例胃癌患者的多点活检样本中免疫细胞和胃癌细胞的单细胞水平基因表达谱分析

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、immune、antibody
  • 📝 描述:Contributors : Chenfei Zhou ; Liting Guo ; Qu Cai ; Wenqi Xi ; Fei Yuan ; Huan Zhang ; Chao Yan ; Lei Huang ; Zhenggang Zhu ; Jun ZhangSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensTo analyze the correlation between the neutrophil-to-lymphocyte ratio (NLR) and prognosis of advanced gastric cancer (AGC) patients treated by PD-1 antibody-based therapy and to delineate molecular characteristics of circulating neutrophils by single-cell RNA sequencing (scRNA-seq).
  • 🔗 查看原文

9. GSE333425 原发性神经母细胞瘤肿瘤细胞的 RNA-seq 分析。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、RNA-seq
  • 📝 描述:Series Type : Expression profiling by high throughput sequencingOrganism : Mus musculusTo investigate the transcriptional effects of Paics, we performed RNA-seq on primary tumor cells isolated from Th-MYCN+/+Th-IGF2BP1+/+ mice.
  • 🔗 查看原文

10. GSE332838 范可尼贫血通路激活将癌基因诱导的衰老转化为促肿瘤状态

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:regex:onco(logy|logist|gene|genic)、pathway
  • 📝 描述:Contributors : Yue Qiu ; Jingjie Mu ; Yifan Guo ; Jin-Yu Lu ; Xiaoqin Li ; Wenahn Liu ; Wenyan Xu ; Sha Song ; Xianjue MaSeries Type : Expression profiling by arrayOrganism : Drosophila melanogasterDNA repair pathways are canonically tumor-suppressive, yet emerging evidence suggests their upregulation can promote cancer progression, a paradox whose mechanisms remain poorly understood. Here, we report that activation of the Fanconi Anemia (FA) DNA repair pathway drives malignant tumor progression by reprogramming cellular senescence from a tumor-suppressive to a pro-tumorigenic state. Through an unbiased genetic screen in Drosophila, we identified that loss of Sras (homologous to human RCE1) cooperates with oncogenic RasV12 to induce slow-progressing yet highly malignant tumors. Bioinformatics analysis revealed marked upregulation of the FA pathway and Hippo signaling in these tumors. Genetic manipulation demonstrates that FA pathway activation is required for tumor growth and invasion. Mechanistically, we show that FA pathway upregulation enhances cellular senescence and triggers secretion of senescence-associated secretory phenotype (SASP) factors, particularly the cytokine Unpaired-1 (Upd1; IL-6 homolog), which in turn activates JAK-STAT signaling within tumor cells through an autocrine loop, thereby promoting tumor progression. Notably, p53 activation is dispensable for this pro-tumorigenic senescence program. FA pathway activation and its pro-tumorigenic function are conserved across multiple RasV12-driven malignant tumor models. Our findings reveal a previously unrecognized mechanism by which DNA repair machinery is co-opted to convert oncogene-induced senescence into a tumor-promoting state, with broad implications for understanding cancer progression and developing therapies targeting Ras-driven malignancies.
  • 🔗 查看原文

💡 该来源还有 54 条内容,详见 文末

📊 关键词统计

关键词出现次数
RNA-seq12
transcriptome9
aging7
cancer6
metabolism5
tumor4
regex:immuno(logytherapy
ChIP-seq3
scRNA3
regex:onco(logylogist
metabolic3
sequencing3
inflammation3
leukemia3
epigenetic3
pathway2
methylation2
single-cell2
carcinoma2
macrophage2

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