科研日报 2026-07-27

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📅 Daily Report - 2026-07-27

今日筛选出 18 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突变驱动的结直肠癌中,RNA m6A修饰与CD73免疫逃逸的重塑机制被揭示。

主要方向

  • 肿瘤免疫逃逸机制:研究KRAS突变如何通过重编程RNA m6A修饰,驱动CD73依赖的免疫逃逸,特别是在结直肠癌中。
  • 基因调控与表观遗传:探索CHI3L1在卵巢癌细胞中对基因甲基化修饰的调控作用,以及可卡因成瘾相关的海马学习中DNA甲基化和ECM基因的重塑。
  • 细胞功能与疾病:分析Ankrd11缺失对慢性HBV特异性T细胞功能逆转的影响,以及3D类器官模型中Aβ42处理对人前脑类器官的影响。

技术亮点

  • 多组学整合:结合RNA-seq、ChIP-seq、scRNA-seq、MeRIP-seq、ATAC-seq、RRBS等多种高通量测序技术,全面解析基因表达、染色质可及性、蛋白结合位点、RNA修饰以及DNA甲基化等。
  • 单细胞与类器官模型:利用单细胞RNA测序和人iPSC衍生的类器官模型,深入研究细胞异质性和复杂生物过程。

🧪 博客更新

今日焦点: 一项大规模长期研究首次证实,咖啡摄入可显著降低肝脏疾病(包括肝硬化、肝癌及肝病死亡)的风险。

主要方向

  • 探索咖啡对肝脏脂肪堆积、纤维化和癌变的保护机制。
  • 评估咖啡在改善肝脏健康指标(如肝脏扫描结果和血液蛋白模式)中的作用。

技术亮点

  • 利用大规模长期队列研究,提供强有力的人群流行病学证据。
  • 结合肝脏影像学和生物标志物分析,多维度评估咖啡的肝脏保护效应。

📚 分类浏览

🧬 数据前沿 (17条)

详细内容(前10条)

1.GSE333904 KRAS 突变重编程 RNA m6A 修饰以驱动结直肠癌中 CD73 依赖性免疫逃逸 [RNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、immune、RNA-seq、KRAS
  • 📝 描述:Contributors : Seungjae Shin ; Seung-Pyo Hong ; Jong-Il Kim ; Sung-Yup ChoSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusKRAS mutations, present in about 40% of colorectal cancers (CRCs), are strongly associated with an immunosuppressive tumor microenvironment characterized by restricted immune infiltration and poor responses to immunotherapy. Here, we show that KRAS mutations remodel the m6A epitranscriptome to promote immune evasion. Methylated RNA-immunoprecipitation sequencing of isogenic CRC cells revealed that KRAS-mutant cells exhibit increased N6-methyladenosine (m6A) deposition on CD73 mRNAs, enhancing the stability of the transcripts by promoting interaction with IGF2BP3. This m6A modification was driven by TEAD4-dependent recruitment of the METTL3 methyltransferase complex, identifying TEAD4 as a spatial regulator of m6A deposition. Functionally, METTL3 knockdown in KRAS-mutant syngeneic tumors suppressed tumor growth and restored antitumor immunity by increasing CD8⁺ T-cell and natural killer (NK)–cell infiltration in a CD73-dependent manner. Moreover, METTL3 inhibition synergized with anti-PD-1 therapy and a CD73 inhibitor to reduce tumor burden. Together, these findings demonstrate that KRAS-driven m6A remodeling is a key mechanism of immune suppression in CRC and highlight METTL3 as a promising therapeutic target.
  • 🔗 查看原文

2.GSE311797 KRAS 突变重编程 RNA m6A 修饰以驱动结直肠癌中 CD73 依赖性免疫逃逸 [ChIP-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、immune、ChIP-seq、KRAS
  • 📝 描述:Contributors : Seungjae Shin ; Seung-Pyo Hong ; Jong-Il Kim ; Sung-Yup ChoSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Homo sapiensKRAS mutations, present in about 40% of colorectal cancers (CRCs), are strongly associated with an immunosuppressive tumor microenvironment characterized by restricted immune infiltration and poor responses to immunotherapy. Here, we show that KRAS mutations remodel the m6A epitranscriptome to promote immune evasion. Methylated RNA-immunoprecipitation sequencing of isogenic CRC cells revealed that KRAS-mutant cells exhibit increased N6-methyladenosine (m6A) deposition on CD73 mRNAs, enhancing the stability of the transcripts by promoting interaction with IGF2BP3. This m6A modification was driven by TEAD4-dependent recruitment of the METTL3 methyltransferase complex, identifying TEAD4 as a spatial regulator of m6A deposition. Functionally, METTL3 knockdown in KRAS-mutant syngeneic tumors suppressed tumor growth and restored antitumor immunity by increasing CD8⁺ T-cell and natural killer (NK)–cell infiltration in a CD73-dependent manner. Moreover, METTL3 inhibition synergized with anti-PD-1 therapy and a CD73 inhibitor to reduce tumor burden. Together, these findings demonstrate that KRAS-driven m6A remodeling is a key mechanism of immune suppression in CRC and highlight METTL3 as a promising therapeutic target.
  • 🔗 查看原文

3.GSE311795 KRAS 突变重编程 RNA m6A 修饰以驱动结直肠癌中 CD73 依赖性免疫逃逸 [scRNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、immune、scRNA、KRAS
  • 📝 描述:Contributors : Seungjae Shin ; Seung-Pyo Hong ; Jong-Il Kim ; Sung-Yup ChoSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusKRAS mutations, present in about 40% of colorectal cancers (CRCs), are strongly associated with an immunosuppressive tumor microenvironment characterized by restricted immune infiltration and poor responses to immunotherapy. Here, we show that KRAS mutations remodel the m6A epitranscriptome to promote immune evasion. Methylated RNA-immunoprecipitation sequencing of isogenic CRC cells revealed that KRAS-mutant cells exhibit increased N6-methyladenosine (m6A) deposition on CD73 mRNAs, enhancing the stability of the transcripts by promoting interaction with IGF2BP3. This m6A modification was driven by TEAD4-dependent recruitment of the METTL3 methyltransferase complex, identifying TEAD4 as a spatial regulator of m6A deposition. Functionally, METTL3 knockdown in KRAS-mutant syngeneic tumors suppressed tumor growth and restored antitumor immunity by increasing CD8⁺ T-cell and natural killer (NK)–cell infiltration in a CD73-dependent manner. Moreover, METTL3 inhibition synergized with anti-PD-1 therapy and a CD73 inhibitor to reduce tumor burden. Together, these findings demonstrate that KRAS-driven m6A remodeling is a key mechanism of immune suppression in CRC and highlight METTL3 as a promising therapeutic target.
  • 🔗 查看原文

4.GSE311796 KRAS 突变重编程 RNA m6A 修饰以驱动结直肠癌中 CD73 依赖性免疫逃逸 [MeRIP-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、immune、KRAS
  • 📝 描述:Contributors : Seungjae Shin ; Seung-Pyo Hong ; Jong-Il Kim ; Sung-Yup ChoSeries Type : OtherOrganism : Homo sapiensKRAS mutations, present in about 40% of colorectal cancers (CRCs), are strongly associated with an immunosuppressive tumor microenvironment characterized by restricted immune infiltration and poor responses to immunotherapy. Here, we show that KRAS mutations remodel the m6A epitranscriptome to promote immune evasion. Methylated RNA-immunoprecipitation sequencing of isogenic CRC cells revealed that KRAS-mutant cells exhibit increased N6-methyladenosine (m6A) deposition on CD73 mRNAs, enhancing the stability of the transcripts by promoting interaction with IGF2BP3. This m6A modification was driven by TEAD4-dependent recruitment of the METTL3 methyltransferase complex, identifying TEAD4 as a spatial regulator of m6A deposition. Functionally, METTL3 knockdown in KRAS-mutant syngeneic tumors suppressed tumor growth and restored antitumor immunity by increasing CD8⁺ T-cell and natural killer (NK)–cell infiltration in a CD73-dependent manner. Moreover, METTL3 inhibition synergized with anti-PD-1 therapy and a CD73 inhibitor to reduce tumor burden. Together, these findings demonstrate that KRAS-driven m6A remodeling is a key mechanism of immune suppression in CRC and highlight METTL3 as a promising therapeutic target.
  • 🔗 查看原文

5. GSE339333 CHI3L1 调控卵巢癌细胞中的基因甲基化修饰

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、methylation
  • 📝 描述:Contributor : Yaodi ShaoSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Homo sapiensAdipocyte-tumor interaction plays a critical role in tumor microenvironment. Typically, high-grade serous ovarian carcinoma (HGSOC) preferentially metastasizes to the omentum, an adipocyte-rich tissue, and obesity correlates with worse patient prognosis. However, the underlying mechanisms remain poorly understood. Here, we identify a bidirectional adipocyte–cancer cell axis in which HGSOC cells stimulate lactate metabolism in adjacent adipocytes, leading to hypoxia-inducible factor 1α (HIF-1α) activation and subsequent secretion of chitinase 3-like 1 (CHI3L1). On the one hand, CHI3L1 acts as an inflammatory factor that promotes the secretion of additional cytokines, perpetuating omental inflammation, driving CD8⁺ T cell exhaustion, and shaping an immunosuppressive microenvironment that favors tumor metastasis. On the other hand, CHI3L1 binds to and stabilizes protein arginine methyltransferase 5 (PRMT5) in tumor cells, thereby enhancing its methyltransferase activity. This upregulation suppresses dual-specificity phosphatase 1 (DUSP1), a phosphatase of mitogen-activated protein kinase (MAPK), and sustains oncogenic MAPK signaling across multiple tumor models. Obesity amplifies this pathway by heightening HIF-1α activity and elevating CHI3L1 levels in adipose tissue, which drives both tumor progression and resistance to anti-angiogenic therapy. Pharmacological inhibition of CHI3L1 disrupts this signaling loop and restores therapeutic sensitivity, while also alleviating immune exhaustion in the tumor microenvironment. Collectively, our findings establish CHI3L1 as a key mediator of a unified mechanism that drives omental tropism and obesity-associated aggressive phenotypes, highlighting its potential as a prognostic biomarker and therapeutic target to improve anti-angiogenic therapy.
  • 🔗 查看原文

6. GSE283112 可卡因奖赏相关海马学习中DNA甲基化的大规模重组和细胞外基质基因的上调[RNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:RNA-seq、methylation
  • 📝 描述:Contributors : Madelyn Baker ; Elizabeth Brindley ; Kyle Windisch ; Anjali Rajadhyaksha ; Miklos TothSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusCocaine addiction is characterized by compulsive drug use and relapse triggered by drug-related cues and contexts. Though previous research on substance use disorders has primarily focused on the mesolimbic reward pathway, the hippocampus plays an important role in encoding the spatial and contextual features of reward-associated learning. The dorsal dentate gyrus of the hippocampus receives contextual information from the entorhinal cortex and forms the memories of drug-associated contexts in sparse ensembles of dentate granule cells. Since dentate granule cells, unlike other principal hippocampal neurons, express dopamine D1 receptors; they uniquely respond to the extracellular increase of dopamine during cocaine use. Given these inputs, we hypothesized that repeated experience with cocaine during self-administration would produce substantial epigenetic and transcriptional changes in dentate granule cells that, via circuit maladaptation, contributes to the strong and lasting memories of drug experience and to the high incidence of relapse. Here we report DNA methylation changes, biased toward hypomethylation, in dentate granule cells at the unusually high number of ~30,000 small, 100-200 bp genomic regions, while the purely environmental challenge of chronic unpredictable stress produced 10 times fewer differentially methylated regions. Cocaine-sensitive epigenomic regions, in contrast to the rest of the genome, had heterogenous methylation in the otherwise largely homogenous population of mature dentate granule cells, suggesting that their cocaine-induced epigenetic malleability is due to relatively unhindered switching between the methylated and unmethylated states. Further, these regions were overrepresented in enhancers and associated with about half of the expressed genes (~8,000) of diverse gene ontology functions that, however, were not random and had relevance to neuronal plasticity. In contrast, only ~400 genes were upregulated in cocaine self-administration that included a significant number of differentially methylated genes. These genes included many collage genes and were enriched in the functional category of Organization of extracellular matrix (ECM), an extra-neuronal structure involved in neuronal connectivity and plasticity. The DNA methylation and gen…
  • 🔗 查看原文

7. GSE299520 Ankrd11 缺陷逆转慢性 HBV 特异性 T 细胞功能障碍 [RNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:RNA-seq
  • 📝 描述:Contributors : Wei Xu ; Xuyu ZhouSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusTo investigate the transcriptomic changes in CD8 T cells upon Ankrd11 deficiency, we performed RNA-seq to analyze alterations in the transcriptome between Ankrd11-knockout and wild-type CD8 T cells.
  • 🔗 查看原文

8. GSE299519 Ankrd11 缺陷逆转慢性 HBV 特异性 T 细胞功能障碍 [ATAC-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:ATAC-seq
  • 📝 描述:Contributors : Wei Xu ; Xuyu ZhouSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Mus musculusTo investigate the impact of Ankrd11 deficiency on chromatin accessibility in CD8 T cells, we performed ATAC-seq to analyze differences in chromatin openness between Ankrd11-knockout CD8 T cells and wild-type CD8 T cells.​​
  • 🔗 查看原文

9. GSE339419 多组学分析揭示表观遗传和lncRNA变化与早期人类软骨内成骨启动之间的联系

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:epigenetic
  • 📝 描述:Contributors : David Hidalgo Gil ; Paul BourgineSeries Type : Genome binding/occupancy profiling by high throughput sequencing ; Expression profiling by high throughput sequencingOrganism : Homo sapiensDifferentiation programs remain incompletely understood across stem cell types, including for human bone marrow mesenchymal stromal/stem (BM-MSCs) cells, a heterogenous population orchestrating bone formation and establishing a functional hematopoietic niche in the bone marrow. BM-MSCs form and repair bone through the evolutionarily conserved process of endochondral ossification (EO), initiated by deposition of a transient cartilage template subsequently remodeled into bone and bone marrow tissues. Despite their considerable potential for skeletal regeneration, the early molecular and cellular events underlying BM-MSCs commitment to EO remain elusive. To overcome donor dependent variability in chondrogenic potential that limits mechanistic studies, we here exploit OssiGel as a potent chondro-inductive extracellular matrix offering robust recapitulation of EO by BM-MSCs. Through multi-omics profiling of OssiGel-primed BM-MSCs, we identify rapid chromatin remodeling at chondrogenic loci as concomitant for lineage commitment. The emergence of a chondro-progenitor population is detected as early as 3 days in vivo and correlates with successful EO recapitulation. Mechanistically, we identify LINC02511 as novel enhancer-associated element involved in the onset of EO. We confirm presence of LINC02511 in human skeletal atlases, and its CRISPR-mediated silencing significantly impaired EO. By integrating human tissue engineering strategies with single cell multi-omics profiling, our study provides a framework for deciphering BM-MSCs fate decisions, highlighting the role of enhancer and non-coding elements as key determinants of early lineage specification. These findings advance our understanding of BM-MSCs biology and will prompt their translational exploitation in regenerative medicine.
  • 🔗 查看原文

10. GSE339404 Aβ42 处理后人类前脑类器官的批量 RNA 测序

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:sequencing
  • 📝 描述:Contributor : Yilin FengSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensHuman iPSC-derived forebrain organoids were exposed to amyloid-β42 (Aβ42) at day90 to model Alzheimer’s disease-associated pathology. Bulk RNA sequencing was performed to characterize transcriptional changes induced by Aβ42 treatment. The resulting dataset provides genome-wide expression profiles of treated and untreated organoids.
  • 🔗 查看原文

💡 该来源还有 7 条内容,详见 文末

🧪 博客更新 (1条)

详细内容(全部1条)

1. 咖啡或许有助于保护肝脏免受脂肪堆积、瘢痕形成和癌症的侵害。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer
  • 📝 描述:A major long-term study linked coffee consumption with lower risks of cirrhosis, liver cancer, and death from liver disease. Coffee drinkers also showed healthier liver scans and blood protein patterns, with less fat, inflammation, and scarring. Benefits appeared even at one or two cups daily and were strongest around three to four cups.
  • 🔗 查看原文

📊 关键词统计

关键词出现次数
cancer6
RNA-seq6
immune4
KRAS4
methylation3
ATAC-seq2
ChIP-seq1
scRNA1
epigenetic1
sequencing1
carcinoma1
T cell1

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🧬 数据前沿 其他内容 (7条)

📅 报告生成时间:2026-07-26 22:26
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