科研日报 2025-12-12

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📅 Daily Report - 2025-12-12

今日筛选出 61 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: 首次揭示谷氨酰胺合成酶(GS)在β-catenin突变肝癌中缺失如何重塑谷氨酰胺代谢,驱动免疫抑制性巨噬细胞适应,为肿瘤免疫治疗提供新靶点。

主要方向

  • 肿瘤代谢重塑与免疫逃逸机制(肝癌、膀胱癌、非小细胞肺癌、乳腺癌)
  • 细胞信号通路调控与疾病进展(Wnt、EGFR-TKI、雄激素受体、热休克通路)
  • 肠道菌群代谢产物与肠道稳态维持
  • 神经退行性疾病(C9orf72突变、Tau病理)的单细胞转录组分析

技术亮点

  • 空间转录组学技术在心血管疾病(糖尿病冠脉微循环、动脉粥样硬化血栓)研究中的应用,揭示区域异质性。
  • 结合单细胞RNA测序和全基因组亚硫酸氢盐测序,深入解析细胞异质性、基因组甲基化与发育、疾病的关联。

🧪 博客更新

今日焦点: 新型MUTE-Seq技术有望实现对低频癌症突变的超灵敏检测;肥胖被证实能显著加速阿尔茨海默病的进展。

主要方向

  • 癌症突变检测:通过富集稀有突变,提高液体活检的灵敏度。
  • 阿尔茨海默病研究:揭示肥胖对疾病进展的加速作用。
  • 癌症治疗抵抗机制:发现癌细胞利用DNA降解酶的生存策略。

技术亮点

  • MUTE-Seq:通过去除野生型DNA来富集稀有突变。
  • 早期生物标志物检测:利用血液检测快速评估肥胖对阿尔茨海默病的影响。

📚 分类浏览

🧬 数据前沿 (58条)

详细内容(前10条)

1.GSE298611 β-catenin突变型肝细胞癌中谷氨酰胺合成酶的缺失重塑谷氨酰胺代谢,促进免疫抑制性巨噬细胞的适应 [dataset1.Spatial.Transcriptomics]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:carcinoma、macrophage、metabolism、spatial、transcriptomics
  • 📝 描述:Contributors : Evan R Dalgado ; Panari Patel ; Junyan Tao ; Yekaterina Krutsenko ; Silvia Liu ; Daniel Green ; Raghad Alzubali ; Brandon M Lehrich ; Jia-Jun Liu ; Tyler Yasaka ; Minakshi Poddar ; Sucha Singh ; Vik Meadows ; Aaron W Bell ; Aatur Singhi ; Satdarshan MongaSeries Type : OtherOrganism : Mus musculusRecent therapeutic strategies using immune checkpoint inhibitors (ICIs) to treat hepatocellular carcinoma (HCC) have shown modest success. Response to ICIs is heterogeneous, and while mutational burden may predict stable responses, some HCCs with poor prognostic markers (e.g., CTNNB1 mutations) may still respond under favorable tumor immune microenvironment (TIME) conditions. We show that β-catenin-mutated HCCs lacking glutamine synthetase (GS) exhibit aggressive disease due to altered glutamate/glutamine (Glu/Gln) availability, driving macrophage adaptation that promotes immunosuppression. Loss of HCC Glul (encoding GS) forces hepatic macrophages to redistribute effort from immunologic to metabolic functions. Notably, depleting macrophages in GS-deficient, β-catenin-mutant HCC models improves survival. Additionally, HCC GS loss results in macrophage GS overexpression that maintains mTOR signaling in tumors, which is targetable. These findings reveal a metabolic dynamic between HCCs and the TIME which suggests that metabolic profiling, including GS expression, may refine patient selection for ICI therapies and improve outcomes under current standards of care.
  • 🔗 查看原文

2.GSE300260 AMPK依赖的表观遗传代谢调控介导紫檀芪在肝细胞癌中的抗癌作用。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、carcinoma、metabolism、epigenetic
  • 📝 描述:Contributors : Cayla Boycott ; Megan Beetch ; Katarzyna Lubecka-Gajewska ; Benjamin S Ramsey ; Sandra Torregrosa-Allen ; Bennett D Elzey ; Abigail Cox ; Nadia Atallah Lanman ; Aline de Conti ; Min Li ; Mario Ferruzzi ; Igor Pogribny ; Barbara Stefanska (corresponding author)Series Type : Expression profiling by high throughput sequencingOrganism : Rattus norvegicusScope: Disrupted metabolism, often implicated in hepatocellular carcinoma (HCC), is linked to aberrant epigenetic patterns. Dietary polyphenols, including pterostilbene (PTS), have been demonstrated to remodel epigenetic landscapes and restore metabolic homeostasis by regulating the activity of AMP-activated protein kinase (AMPK), a protein recently shown to orchestrate a diverse set of networks to epigenetically mediate transcription. We therefore explored the mechanistic involvement of AMPK in the epigenetic effects of PTS in HCC. Methods and Results: We incorporated PTS into a choline-deficient amino acid defined HCC-inducing diet (CDAA) in male Fisher-344 rats and found significant attenuation in HCC development compared to CDAA alone. Transcriptomics by RNA-sequencing revealed PTS-upregulated targets, that were enriched in key metabolic processes, including the folate (Aldh1l1), methionine (Bhmt) and sarcosine (Dmdgh) cycles. PTS-mediated gene upregulation was linked to lower levels of histone H3-methylation at lysine 27 (H3K27me3) at gene promoters. Mechanistic studies in HCC HepG2 cells revealed that AMPK inhibition abolished epigenetic gene activation in response to PTS, which was accompanied by diminished binding of H3K27me3-demethylase KDM6A at promoters of PTS-target genes. Conclusion: Our findings provide evidence for new disease vulnerabilities that arise from epigenetic/metabolic changes and constitute novel opportunities for preventative and therapeutic success in HCC.
  • 🔗 查看原文

3.GSE290189 SHMT2 modulates the transcriptome and metabolism profiles to promote the tumor phenotypes of bladder cancer HT-1376 cells

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、cancer、metabolism、transcriptome
  • 📝 描述:Contributors : Xiaobo Guo ; Gang LiSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensBladder cancer (BLCA) is a common malignant tumor of the urinary system. The development and progression of BLCA are controlled by multiple regulatory molecules, which have not been widely investigated. In this study, we explored the functions and downstream targets of serine hydroxy methyltransferase 2 (SHMT2) by silencing its expression using small interference RNA (siSHMT2) in HT-1376 cells. Whole transcriptome and metabolism profiles were deeply analyzed to identify the molecular targets of SHMT2. We found that siSHMT2 significantly reduced the proliferation rate and altered the cell cycle stages of HT-1376 cells. Moreover, siSHMT2 can modulate the expression of hundreds of genes (DEGs), including 126 upregulated and 106 downregulated DEGs. We then found that the most significant DEGs were tightly associated with progression of cancers, including PTMA, HNRNPR, RAPH1, TRAF3IP1, CNBP, and PRR15. At the same time, the alternative splicing profile was also regulated by siSHMT2, including the skipped exon as the dominant AS types. Finally, we identified the differential metabolites (DMs), and found the metabolism profile was significantly regulated by siSHMT2. Besides the purine metabolism, we observed that valine, leucine and isoleucine biosynthesis and degradation, TCA cycle, and propanoate metabolism were among the top pathways of DMs. In summary, we highlight the important roles of SHMT2 in HT-1376 cells and identified its downstream molecular targets, which are associated with the development of BLCA and can be used as therapeutic targets of BLCA in future.
  • 🔗 查看原文

4.GSE298616 β-catenin突变型肝细胞癌中谷氨酰胺合成酶的缺失重塑谷氨酰胺代谢,促进免疫抑制性巨噬细胞的适应

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:carcinoma、macrophage、metabolism
  • 📝 描述:Series Type : Other ; Expression profiling by high throughput sequencingOrganism : Mus musculusThis SuperSeries is composed of the SubSeries listed below.
  • 🔗 查看原文

5.GSE298614 β-catenin突变肝细胞癌中谷氨酰胺合成酶的缺失重塑谷氨酰胺代谢,促进免疫抑制性巨噬细胞的适应 [dataset3.scRNAseq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:carcinoma、macrophage、metabolism
  • 📝 描述:Contributors : Evan R Dalgado ; Panari Patel ; Junyan Tao ; Yekaterina Krutsenko ; Silvia Liu ; Daniel Green ; Raghad Alzubali ; Brandon M Lehrich ; Jia-Jun Liu ; Tyler Yasaka ; Minakshi Poddar ; Sucha Singh ; Vik Meadows ; Aaron W Bell ; Aatur Singhi ; Satdarshan MongaSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusRecent therapeutic strategies using immune checkpoint inhibitors (ICIs) to treat hepatocellular carcinoma (HCC) have shown modest success. Response to ICIs is heterogeneous, and while mutational burden may predict stable responses, some HCCs with poor prognostic markers (e.g., CTNNB1 mutations) may still respond under favorable tumor immune microenvironment (TIME) conditions. We show that β-catenin-mutated HCCs lacking glutamine synthetase (GS) exhibit aggressive disease due to altered glutamate/glutamine (Glu/Gln) availability, driving macrophage adaptation that promotes immunosuppression. Loss of HCC Glul (encoding GS) forces hepatic macrophages to redistribute effort from immunologic to metabolic functions. Notably, depleting macrophages in GS-deficient, β-catenin-mutant HCC models improves survival. Additionally, HCC GS loss results in macrophage GS overexpression that maintains mTOR signaling in tumors, which is targetable. These findings reveal a metabolic dynamic between HCCs and the TIME which suggests that metabolic profiling, including GS expression, may refine patient selection for ICI therapies and improve outcomes under current standards of care.
  • 🔗 查看原文

6.GSE298613 β-catenin突变肝细胞癌中谷氨酰胺合成酶的缺失重塑谷氨酰胺代谢,促进免疫抑制性巨噬细胞的适应 [dataset2.scRNAseq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:carcinoma、macrophage、metabolism
  • 📝 描述:Contributors : Evan R Dalgado ; Panari Patel ; Junyan Tao ; Yekaterina Krutsenko ; Silvia Liu ; Daniel Green ; Raghad Alzubali ; Brandon M Lehrich ; Jia-Jun Liu ; Tyler Yasaka ; Minakshi Poddar ; Sucha Singh ; Vik Meadows ; Aaron W Bell ; Aatur Singhi ; Satdarshan MongaSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusRecent therapeutic strategies using immune checkpoint inhibitors (ICIs) to treat hepatocellular carcinoma (HCC) have shown modest success. Response to ICIs is heterogeneous, and while mutational burden may predict stable responses, some HCCs with poor prognostic markers (e.g., CTNNB1 mutations) may still respond under favorable tumor immune microenvironment (TIME) conditions. We show that β-catenin-mutated HCCs lacking glutamine synthetase (GS) exhibit aggressive disease due to altered glutamate/glutamine (Glu/Gln) availability, driving macrophage adaptation that promotes immunosuppression. Loss of HCC Glul (encoding GS) forces hepatic macrophages to redistribute effort from immunologic to metabolic functions. Notably, depleting macrophages in GS-deficient, β-catenin-mutant HCC models improves survival. Additionally, HCC GS loss results in macrophage GS overexpression that maintains mTOR signaling in tumors, which is targetable. These findings reveal a metabolic dynamic between HCCs and the TIME which suggests that metabolic profiling, including GS expression, may refine patient selection for ICI therapies and improve outcomes under current standards of care.
  • 🔗 查看原文

7.GSE298111 GLMP通过激活自噬和RhoA通路促进非小细胞肺癌的EGFR-TKI耐药性

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、resistance、pathway
  • 📝 描述:Contributors : Xiao Liang ; Jiali Xu ; Erbao Zhang ; Renhua GuoSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensHere, we report that the EGFR-TKI resistance mechanism is mediated by lysosome-related regulation. We established an osimertinib-resistant cell line, designated PC9OR, derived from the parental PC9 cells. The overexpression of glycosylated lysosomal membrane protein (GLMP) in PC9OR promotes resistance to Osimertinib. Mechanistically, GLMP could regulate the ubiquitination of RhoA and promote resistance by activating the epithelial-mesenchymal transition (EMT). Our findings provide a potential therapeutic strategy to overcome resistance to EGFR-TKIs.
  • 🔗 查看原文

8.GSE296966 雄激素受体促进 ER 突变乳腺癌中的线粒体氧化磷酸化、肉碱代谢和对棕榈酸脂毒性的抵抗。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、metabolism、resistance
  • 📝 描述:Contributors : Sessions Dane ; Spoelstra Nicole ; Caino Cecilia ; Yu Min ; Goodspeed Andrew ; Richer JenniferSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensThe effect of androgen receptor (AR) in ER+ breast cancer remains controversial. We find that AR promotes tumor cell growth, oxidative phosphorylation, and fatty acid oxidation under conditions mimicking long-term aromatase inhibition. AR also promotes expression of the mitochondrial and peroxisomal acylcarnitine synthesis enzyme CRAT. AR inhibition decreases CRAT expression and CRAT knockdown is sufficient to inhibit OXPHOS. AR inhibition does not elicit a broad anti-OXPHOS transcriptomic signature, but does affect the expression of a few key metabolic enzymes. AR antagonism also induces a metabolomic signature consistent with severe OXPHOS dysfunction. This work identifies AR as a regulator of CRAT and OXPHOS in ER+ breast cancer.
  • 🔗 查看原文

9.GSE313152 乳腺癌患者肺转移灶和正常肺组织的单细胞 RNA 测序。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、sequencing、single-cell
  • 📝 描述:Contributors : C E Caldon ; Leila EshraghiSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensThe estrogen receptor (ER) drives growth in most breast cancers. Endocrine therapy reduces recurrence, however around 30% of cancers relapse. Many recurrences occur years later, with slowly proliferating, hard-to-treat disease. To study this, we generated slow-growing resistant cells that form small primary tumours but readily metastasize. Single-cell RNA sequencing (scRNAseq) revealed that endocrine therapy reprograms these cells, notably upregulating the Rac1 signalling component P-Rex1. We found in clinical cohorts that P-Rex1 is high in ER+ breast cancer, including in late recurrent disease.
  • 🔗 查看原文

10.GSE255130 肠道菌群代谢产物吲哚-3-乙酸通过转录因子AHR维持肠道上皮稳态

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:gut、regex:gut(-?microbiome)?、regex:intestin(e|al)
  • 📝 描述:Contributor : Mengfan LiSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Mus musculusThe incidence and prevalence of inflammatory bowel disease (IBD) is gradually increasing. A high-fat diet (HFD) is known to disrupt intestinal homeostasis and aggravate IBD, yet the underlying mechanisms remain largely undefined. Here, a positive correlation between dietary fat intake and disease severity in both IBD patients and HFD-fed mice is observed. HFD induces a significant decrease in indole-3-acetic acid (IAA) and lead to intestinal barrier damage. Furthermore, IAA supplementation enhances the intestinal mucin sulfation and effectively alleviates colitis. Mechanistically, IAA upregulates key molecules involved in mucin sulfation, including Papss2 and Slc35b3, the synthesis enzyme and the transferase of 3’-phosphoadenosine-5’-phosphosulfate (PAPS), via the Aryl Hydrocarbon Receptor (AHR). More importantly, AHR can directly bind to the transcription start site of Papss2. Oral administration of Lactobacillus reuteri, which can produce IAA, contributes to protecting against colitis and promoting mucin sulfation, while the modified L. reuteri strain lacking the iaaM gene (LactobacillusΔiaaM) and the ability to produce IAA fails to exhibit such effects. Overall, IAA enhances intestinal mucin sulfation through AHR, contributing to the protection of intestinal homeostasis.
  • 🔗 查看原文

💡 该来源还有 48 条内容,详见 文末

🧪 博客更新 (3条)

详细内容(全部3条)

1. MUTE-Seq——一种检测低频癌症突变的超灵敏方法

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer
  • 📝 描述:MUTE-Seq enriches rare cancer mutations by removing wild-type DNA, enabling highly sensitive detection that enhances liquid biopsy..
  • 🔗 查看原文

2. 血液检测显示,肥胖会迅速加速阿尔茨海默病的发展进程。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:Alzheimer
  • 📝 描述:Obesity accelerates the rise of Alzheimer’s-related blood biomarkers far more rapidly than previously recognized. Long-term imaging and plasma data show that obese individuals experience much faster increases in proteins linked to neurodegeneration and amyloid buildup. Surprisingly, blood tests detected these changes earlier than PET scans. The results point to obesity as a major, modifiable contributor to Alzheimer’s progression.
  • 🔗 查看原文

3. 科学家揭示癌症得以反弹的隐藏生存秘诀

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer
  • 📝 描述:Scientists discovered that certain cancer cells use a low-level activation of a DNA-dismantling enzyme—normally seen in cell death—to survive treatment. Instead of dying, these “persister cells” leverage this sublethal signal to regrow. Because the mechanism is non-genetic, it appears much earlier than typical resistance mutations. Targeting this enzyme could help stop tumors from returning.
  • 🔗 查看原文

📊 关键词统计

关键词出现次数
cancer9
immune8
metabolism8
sequencing7
RNA-seq6
carcinoma6
spatial6
single-cell5
genome5
macrophage5
tumor4
transcriptome4
scRNA3
epigenetic2
resistance2
pathway2
transcriptomics1
T cell1
Visium1
aging1

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🧬 数据前沿 其他内容 (48条)

📅 报告生成时间:2025-12-11 21:39
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