科研日报 2026-05-28

Page content

📅 Daily Report - 2026-05-28

今日筛选出 198 条内容,来自 3 个来源

Powered by 科研普拉斯 & Claude

🤖 今日AI智能总结

🧬 数据前沿

今日焦点: Ago2敲除有望恢复免疫难治性肺癌对免疫检查点抑制剂的敏感性,为治疗提供新策略。

主要方向

  • 癌细胞Ago2表达与免疫治疗反应的关系研究
  • GPR15L在DSS诱导结肠炎模型中的作用探索
  • 高脂饮食对肠道免疫细胞和菌群的影响机制

技术亮点

  • RNA-seq和ChIP-seq等高通量测序技术在多维度解析生物学机制中的应用。
  • 全基因组甲基化谱分析用于识别瘢痕体质的新型甲基化标志物。

📊 学点生信

今日焦点: 针对R包开发者,文章介绍了加速Stan模型编译的新方法,显著提升模型构建效率。

主要方向

  • 优化Stan模型在R环境下的编译速度。
  • 探索适用于R包开发的Stan模型构建策略。

技术亮点

  • 提出了一套适用于Windows桌面环境的Stan模型编译加速方案。
  • 结合了特定工作环境下的实践经验,为R包开发者提供了可行的优化建议。

🧪 博客更新

今日焦点: 德州A&M大学研究团队开发出一种新型鼻喷剂,通过缓解脑部炎症和恢复能量系统,成功逆转了实验对象的脑衰老迹象,并显著改善了记忆和认知功能。

主要方向

  • 脑衰老逆转与认知功能提升
  • 维生素B12与癌症风险的关联研究

技术亮点

  • 基于鼻喷剂的新型脑部干预方式
  • 探索维生素B12在癌症发生发展中的复杂作用

📚 分类浏览

🧬 数据前沿 (195条)

详细内容(前10条)

1.GSE333285 Ago2 缺失可恢复免疫难治性肺癌对免疫检查点抑制剂的敏感性 [RNA-seq vitro]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、immune、RNA-seq
  • 📝 描述:Contributors : Dario Pasquale Anobile ; Layla Barbar ; Emile Maucotel ; Alexis Cornec ; Valeria Manriquez ; Wilfrid Richer ; Jordan Denizeau ; Christine Sedlik ; Charlie Bories ; Elodie Couderc ; Renaud Leclere ; Judith Sobas ; Emeline Papillon ; Rafael Mena Osuna ; Jimena Tosello-Boari ; Marianne Burbage ; Eliane Piaggio ; Enzo PoirierSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusOne of the first-line treatments for advanced non-small cell lung cancer (NSCLC) are immune checkpoint inhibitors (ICI), which activate the antitumor immune response. Despite their success, ICI remain ineffective in many patients, highlighting the need for strategies to overcome resistance. Most efforts have focused on promoting immune cell infiltration into refractory tumors to improve ICI efficacy. In this work, we mobilize this approach by focusing on Argonaute 2 (Ago2), a pivotal member of the RNA interference pathway. Using two murine models of immunorefractory NSCLC, we demonstrate that tumoral Ago2 suppresses interferon signaling, leading to poor immunogenicity and failure of ICI therapy. Genetic deletion of Ago2 in cancer cells restores interferon signaling and supports immune infiltration of the tumor. Consequently, whereas wild-type tumors are resistant to ICI, tumors devoid of Ago2 become sensitive to treatment. In NSCLC patients treated with ICI, high Ago2 expression and a low interferon signature in tumors correlates with reduced survival. Ago2 is thus a driver of the immunorefractory phenotype observed in NSCLC and may represent a therapeutic target when aiming to sensitize patients to ICI.
  • 🔗 查看原文

2.GSE330941 Ago2 缺失可恢复免疫难治性肺癌对免疫检查点抑制剂的敏感性 [RNA-seq vivo]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、immune、RNA-seq
  • 📝 描述:Contributors : Dario Pasquale Anobile ; Layla Barbar ; Emile Maucotel ; Alexis Cornec ; Valeria Manriquez ; Wilfrid Richer ; Jordan Denizeau ; Christine Sedlik ; Charlie Bories ; Elodie Couderc ; Renaud Leclere ; Judith Sobas ; Emeline Papillon ; Rafael Mena Osuna ; Jimena Tosello-Boari ; Marianne Burbage ; Eliane Piaggio ; Enzo PoirierSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusOne of the first-line treatments for advanced non-small cell lung cancer (NSCLC) are immune checkpoint inhibitors (ICI), which activate the antitumor immune response. Despite their success, ICI remain ineffective in many patients, highlighting the need for strategies to overcome resistance. Most efforts have focused on promoting immune cell infiltration into refractory tumors to improve ICI efficacy. In this work, we mobilize this approach by focusing on Argonaute 2 (Ago2), a pivotal member of the RNA interference pathway. Using two murine models of immunorefractory NSCLC, we demonstrate that tumoral Ago2 suppresses interferon signaling, leading to poor immunogenicity and failure of ICI therapy. Genetic deletion of Ago2 in cancer cells restores interferon signaling and supports immune infiltration of the tumor. Consequently, whereas wild-type tumors are resistant to ICI, tumors devoid of Ago2 become sensitive to treatment. In NSCLC patients treated with ICI, high Ago2 expression and a low interferon signature in tumors correlates with reduced survival. Ago2 is thus a driver of the immunorefractory phenotype observed in NSCLC and may represent a therapeutic target when aiming to sensitize patients to ICI.
  • 🔗 查看原文

3.GSE287965 瘢痕疙瘩发病机制中的表观遗传失调:新型甲基化特征的全基因组鉴定和验证

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:genome、epigenetic、methylation
  • 📝 描述:Series Type : Methylation profiling by genome tiling arrayOrganism : Homo sapiensKeloid scars are related to genetic factors and some environmental factors. Currently, most molecular studies on keloids have primarily focused on epigenetic mechanisms, involving gene expression regulation mechanisms, particularly DNA methylation, where methylation changes have been reported to cause many complex diseases. These studies investigate DNA methylation changes that have been linked to keloid scars. This study aimed to enhance our understanding of keloid scars by examining the epigenetic mechanisms involved from 12 keloid scar fibroblasts and 6 normal skin fibroblasts, using the Infinium MethylationEPIC BeadChip (Illumina, San Diego, CA, USA). The findings revealed 3,564 differentially methylated CpG sites, 828 were hypomethylated (TSS200: 17.11%, TSS1500:37.76%, body: 44.84%, 3’UTR: 0.29%), and 2,736 were hypermethylated (TSS200: 14.81%, TSS1500: 37.34%, body: 47.50%, 3’UTR: 0.18%). This study may serve as a guideline for managing patients with keloid scars in the future.
  • 🔗 查看原文

4. GSE328435 DSS结肠炎模型中同窝Gpr15l-/-和Gpr15l+/+小鼠的全基因组鸟枪法宏基因组测序

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:sequencing、genome
  • 📝 描述:Contributors : Miriana Leggio ; Sebastian Schramm ; Tanja M Müller ; Stefan Wirtz ; Sebastian ZundlerSeries Type : OtherOrganism : feces metagenomeObjective: To explore the role of GPR15L in the pathogenesis of experimental colitis and IBD. Design: We studied how genetic deletion or overexpression of Gpr15l as well as rectal application of recombinant GPR15L alter the course of acute dextran sodium sulfate (DSS) colitis. Rag1-/- and Gpr15-/- mice were used to investigate the role of T cells and Gpr15 for Gpr15l-dependent effects in acute DSS and T cell transfer colitis, respectively. The impact of GPR15L on microbiota was explored with co-housing, littermate and fecal microbiota transfer studies, by 16S rRNA sequencing as well as anti-microbial assays and anaerobic cultures of human stool suspensions analyzed by shotgun metagenomics. The expression of GPR15L was evaluated across three independent cohorts of patients with IBD and correlated to microbial diversity and flare-free survival. Results: Gpr15l clearly mitigated experimental colitis, but this was independent of T cell recruitment and Gpr15. Instead, we observed that the effects of Gpr15l were mediated by altered microbiomes in the large intestine and, consistently, showed that Gpr15l acts as an antimicrobial peptide under anaerobic conditions and shapes microbial communities towards a homeostatic phenotype. Rectal supplementation of Gpr15l counteracted experimental colitis. In patients with IBD, GPR15L expression was decreased in active inflammation, correlated with microbial diversity and was associated with flare-free survival. Conclusions: GPR15L is a host-defense peptide that plays a beneficial role in the pathogenesis of intestinal inflammation. It seems promising to further evaluate its potential as a future therapeutic approach in IBD.
  • 🔗 查看原文

5. GSE317764 高脂饮食通过微生物群驱动的炎症导致肠道第3组固有淋巴细胞快速丢失

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:inflammation、regex:intestin(e|al)
  • 📝 描述:Contributors : Eva C Torrico ; Paulien Kaptein ; Fatiha Laalouhmi ; Sara Guendouzi ; Abdellatif E Khayari ; Chaymae E Baha ; Elly D Htite ; Sophie chawluk ; christian D Gauthier ; Nadhir M Djekidel ; Gopal Murugaiyan ; James A Lederer ; Scott B Sapper ; Roni Nowarski ; Rachid E Fatimy ; Howard L Weiner ; Selma BoulenouarSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiens ; Mus musculusGroup 3 innate lymphoid cells (ILC3s) are critical sensory hubs to maintain intestinal immunity while adapting to environmental changes, including food intake and microbiota composition. Nutritional stress such as feeding on a high-fat diet (HFD) impairs ILC3s homeostasis, but the drivers underlying this phenotype remain elusive. Here, we found that intestinal ILC3s are depleted in overweight and obese humans, similarly to HFD-induced obese mice. However, we identified that ILC3s loss is not dependent on excessive calorie intake, weight gain, or glucose intolerance. Instead, we found that ILC3s impairment starts upon hours of HFD consumption, inducing microbial efflux. As a result, tissue-resident mononuclear phagocytes (MNPs) become proinflammatory, driving ILC3 cell death. We determined that the microbiota-driven stimulation overrides lipid-laden ILC3s ability to perform fatty acid oxidation, causing mitochondrial damage due to the accumulation of lipid peroxides. Collectively, our findings define the mechanism driving ILC3s maladaptation to fat-microbiota crosstalk and raise new considerations for understanding intestinal homeostasis and inflammation.
  • 🔗 查看原文

6. GSE308469 MLL4 复合物在 H3K4 甲基化和 p53 依赖性转录激活中的分子机制 [ChIP-Seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:ChIP-seq、methylation
  • 📝 描述:Contributors : Jianfeng Sun ; Douglas Barrows ; Robert G RoederSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Homo sapiensMLL4 is a mammalian H3K4 mono-methyltransferase that plays a critical role in enhancer-regulated gene activation and tissue-specific gene expression during development. Here, we utilized a reconstituted MLL4 complex (MLL4C) containing a truncated MLL4 “fusion” protein (MLL4F) that retains its catalytic SET domain and N-terminal functional regions for comprehensive structural and functional analyses. In vitro H3K4 methyltransferase assays demonstrated that MLL4 catalytic activity is notably stimulated by p53 and CBP/p300. Cryo-electron microscopy (cryo-EM) analysis revealed that the MLL4 fusion core complex engages the nucleosome in three major distinct conformational states, providing mechanistic insights into the regulation of MLL4 and other MLL family methyltransferases by two structurally rigid modules: the SET–ASH2L–DPY30 module and the RBBP5–WDR5 module. In addition, we delineated a third structurally rigid module within the functional region upstream of MLL4 SET domain, encompassing the tandem PHD4–6, PHD7, and FYR domains, which is essential for MLL4- and p53-dependent transcription. Comparative structural analyses reveal that this third module is evolutionarily conserved across MLL1 to MLL4. Furthermore, we employed crosslinking mass spectrometry and integrative modeling to generate a complete model of the nine-subunit MLL4FC complex and elucidated its functional interactions with p53. Finally, genomic studies in the human colon cancer cell line HCT116 revealed that MLL4 colocalizes with p53 at active enhancers of p53 target genes. MLL4 knockout led to significant downregulation of p53-regulated genes, coupled with the reduction of p53 binding at active enhancers. These findings provide molecular insights into the catalytic and transcriptional functions of the MLL4 complex in establishing active enhancers and facilitating p53-dependent transcription activation.
  • 🔗 查看原文

7. GSE308265 MLL4 复合物在 H3K4 甲基化和 p53 依赖性转录激活中的分子机制 [RNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:RNA-seq、methylation
  • 📝 描述:Contributors : Jianfeng Sun ; Douglas Barrows ; Robert G RoederSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensMLL4 is a mammalian H3K4 mono-methyltransferase that plays a critical role in enhancer-regulated gene activation and tissue-specific gene expression during development. Here, we utilized a reconstituted MLL4 complex (MLL4C) containing a truncated MLL4 “fusion” protein (MLL4F) that retains its catalytic SET domain and N-terminal functional regions for comprehensive structural and functional analyses. In vitro H3K4 methyltransferase assays demonstrated that MLL4 catalytic activity is notably stimulated by p53 and CBP/p300. Cryo-electron microscopy (cryo-EM) analysis revealed that the MLL4 fusion core complex engages the nucleosome in three major distinct conformational states, providing mechanistic insights into the regulation of MLL4 and other MLL family methyltransferases by two structurally rigid modules: the SET–ASH2L–DPY30 module and the RBBP5–WDR5 module. In addition, we delineated a third structurally rigid module within the functional region upstream of MLL4 SET domain, encompassing the tandem PHD4–6, PHD7, and FYR domains, which is essential for MLL4- and p53-dependent transcription. Comparative structural analyses reveal that this third module is evolutionarily conserved across MLL1 to MLL4. Furthermore, we employed crosslinking mass spectrometry and integrative modeling to generate a complete model of the nine-subunit MLL4FC complex and elucidated its functional interactions with p53. Finally, genomic studies in the human colon cancer cell line HCT116 revealed that MLL4 colocalizes with p53 at active enhancers of p53 target genes. MLL4 knockout led to significant downregulation of p53-regulated genes, coupled with the reduction of p53 binding at active enhancers. These findings provide molecular insights into the catalytic and transcriptional functions of the MLL4 complex in establishing active enhancers and facilitating p53-dependent transcription activation.
  • 🔗 查看原文

8. GSE288617 配对转录组学揭示细胞因子刺激的类器官与溃疡性结肠炎上皮反应之间的相似性

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cytokine、transcriptomics
  • 📝 描述:Contributors : Gunnar A Walaas ; Arun Sridhar ; Lusie F Kuraas ; Siri Sæterstad ; Atle v Granlund ; Arne K Sandvik ; Ann E Østvik ; Ingunn Bakke ; Torunn BrulandSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensThe intestinal epithelium mediates critical crosstalk between microbiota and immune cells in inflammatory bowel disease. While patient-derived intestinal organoids offer potential for modeling ulcerative colitis, their ability to replicate in vivo inflammation and utility for precision medicine remain unclear. By comparing transcriptomic profiles from microdissected colonic epithelium of ulcerative colitis patients with paired patient-derived organoids under various inflammatory conditions, we demonstrated that organoids established from uninflamed biopsies can effectively model epithelial inflammation. Combined IFNγ and TNF stimulation or a cocktail of pro- and anti-inflammatory signals induced inflammatory signatures matching in vivo ulcerative colitis patterns, including upregulation of interferon signaling, antigen presentation, and unfolded protein response pathways. Strong correlations between in vivo and in vitro expression of over 200 disease-relevant genes validate intestinal organoids as a suitable preclinical model. These findings substantiate intestinal epithelial organoids’ value for investigating ulcerative colitis pathogenesis and developing personalized medicine approaches.
  • 🔗 查看原文

9. GSE333058 来自 CD14 阳性单核细胞 (ENCSR465SUK) 的 Mint-ChIP-seq。

10. GSE333018 来自 CD14 阳性单核细胞 (ENCSR167XYG) 的 Mint-ChIP-seq。

💡 该来源还有 185 条内容,详见 文末

📊 学点生信 (1条)

详细内容(全部1条)

1. 加快 R 包开发者的 Stan 模型构建速度

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:R package
  • 📝 描述:Introduction In my previous job my work computer was a Windows desktop – yes, those were the days before laptops and hotdesking! My PhD student was interested in Bayesian methods and we put together an R package which included some Stan models. … Continue reading: Speeding up Stan model builds for R package developers
  • 🔗 查看原文
🧪 博客更新 (2条)

详细内容(全部2条)

1. 科学家称,他们用一种简单的鼻喷雾剂逆转了大脑衰老。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:aging
  • 📝 描述:Researchers at Texas A&M have developed a nasal spray that appears to reverse brain aging by calming inflammation and restoring the brain’s energy systems. After just two doses, memory and cognitive function improved for months, raising hopes for future treatments targeting dementia and brain fog.
  • 🔗 查看原文

2. 科学家们对维生素B12与癌症的关系提出了新的疑问

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer
  • 📝 描述:Vitamin B12 has long been seen as a health hero, helping the body make red blood cells, repair DNA, and keep nerves functioning properly. But scientists are discovering that the story may be more complicated than simply “more is better.” While too little B12 can damage DNA and raise cancer risk, some studies suggest that extremely high levels — especially from long-term high-dose supplements — may also be linked to certain cancers or poorer outcomes in cancer patients.
  • 🔗 查看原文

📊 关键词统计

关键词出现次数
ChIP-seq91
RNA-seq48
histone48
T cell20
cancer11
sequencing10
Hi-C6
immune4
genome4
cardiac4
methylation3
transcriptome3
tumor3
spatial2
cytokine2
transcriptomics2
monocyte2
B cell2
inflammation1
regex:intestin(eal)

📎 更多内容

🧬 数据前沿 其他内容 (185条)

📅 报告生成时间:2026-05-27 22:53
🤖 由 GitHub Actions 自动生成