科研日报 2026-06-20

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📅 Daily Report - 2026-06-20

今日筛选出 88 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: 多组学技术在肿瘤免疫微环境、疾病进展机制及衰老相关疾病研究中取得进展,特别是单细胞转录组学在解析肿瘤细胞与免疫细胞互作、肿瘤微环境异质性以及衰老性疾病(如阿尔茨海默病、骨关节炎)中的作用。

主要方向

  • 肿瘤机制与治疗:揭示甲状腺癌淋巴结转移机制、宫颈癌淋巴转移与耐药性(P4HA3、ACLY、铁死亡抗性)、膀胱癌顺铂耐药(Cyclin D–CDK4/6轴)、结直肠癌免疫逃逸(IL-26)、小细胞肺癌耐药性。
  • 疾病模型与免疫调控:利用单细胞技术解析胰腺癌肿瘤微环境(抗VSIG4抗体治疗)、阿尔茨海默病模型(ACSS2对tau病变的神经元保护作用)、肠道屏障功能紊乱(细胞因子诱导)、肥胖(FAHFA作用)、过敏性气道炎症(Rab44缺失)。
  • 微生物与宿主互作:研究结核分枝杆菌在淋巴结的免疫逃逸机制、肠道微生物与衰老性骨关节炎及肥胖的关联。

技术亮点

  • 多组学整合:结合单细胞RNA测序、ATAC-seq、ChIP-seq等技术,深入解析基因调控网络和细胞异质性。
  • 时序转录组学:用于研究细胞因子诱导的肠道屏障损伤过程。

🧪 博客更新

今日焦点: 科学家发现,淀粉样蛋白β(amyloid beta)可能并非阿尔茨海默病(Alzheimer’s disease)的根本原因,而是干扰了神经元功能必需的tau蛋白。

主要方向

  • 探究淀粉样蛋白β与tau蛋白相互作用在阿尔茨海默病发病机制中的作用。
  • 识别淀粉样蛋白β干扰tau蛋白功能的具体分子机制。

技术亮点

  • 提出淀粉样蛋白β与tau蛋白相互作用是阿尔茨海默病潜在的触发机制,颠覆了传统观点。

📚 分类浏览

🧬 数据前沿 (87条)

详细内容(前10条)

1.GSE313389 单细胞转录组分析揭示甲状腺癌淋巴结定植和进展的肿瘤免疫决定因素

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、cancer、immune、lymph、regex:lymph(o|atic)?、single-cell
  • 📝 描述:Contributors : Anthony T Nguyen ; Stephen L Shiao ; Allen S HoSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensLymph node (LN) metastases are a major driver of mortality across solid cancers, including thyroid carcinomas, which are known for high rates of nodal colonization. To elucidate the determinants of nodal spread, we isolated tumor-infiltrating leukocytes from primary thyroid tumors and matched metastatic LNs for single-cell RNA sequencing with validation by multiplex immunohistochemistry. Comparing the microenvironmental alterations between primary tumors and their LNs, we found that thyrocytes and tumor-associated macrophages downregulate the expression of multiple inflammatory cytokine receptors, including TNFRSF12A and CX3CR1, upon LN colonization. LNs were associated with the induction of regulatory T cells to suppress T cell-mediated cytotoxicity compared to matched primary tumors. Notably, tumor-infiltrating lymphocytes within LNs demonstrated increased expression of activation markers, including interleukin-7 receptor (IL7R). High LN expression of IL7R was significantly correlated with improved outcomes and can serve as a biomarker in this heterogeneous disease. Our findings on the dynamic equilibrium within LN metastases may offer conserved mechanisms for nodal colonization across solid tumors.
  • 🔗 查看原文

2.GSE307934 单细胞 RNA 测序揭示了 KPC 细胞移植小鼠模型中抗 VSIG4 抗体治疗对原位胰腺癌肿瘤微环境的影响

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、cancer、tumor microenvironment、sequencing、single-cell
  • 📝 描述:Contributors : Guoling Huang ; Chenhui WangSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusImmune checkpoint blockade (ICB) therapies, such as PD-1/PD-L1 inhibitors, have revolutionized cancer treatment by reactivating exhausted T cells. However, their efficacy varies substantially among tumor types and is particularly limited in immunologically “cold” malignancies such as pancreatic ductal adenocarcinoma. These tumors exhibit minimal T-cell infiltration and a profoundly immunosuppressive tumor microenvironment (TME), leading to poor responses to ICB. VSIG4 is a B7-related transmembrane protein highly expressed by tissue-resident macrophages. Previous studies have shown that VSIG4 suppresses proinflammatory macrophage polarization by modulating pyruvate metabolism and enhances M2-like states via lactate-STAT3 signaling and fatty acid oxidation. VSIG4 also inhibits T-cell activation and proliferation, making it a candidate immune checkpoint molecule. Recent work has linked VSIG4⁺ tumor-associated macrophages to T-cell suppression and therapeutic resistance in multiple cancers, although the identity of the T-cell receptor for VSIG4 remains unknown. So we demonstrate that VSIG4 binds SLC3A2 to suppress Gln uptake and disrupt ion homeostasis, thereby impairing T-cell activation. Antibody-mediated VSIG4 blockade restores T-cell function and induces robust antitumor responses, especially in pancreatic cancer models. These findings define a novel VSIG4–SLC3A2 axis that integrates metabolic and ionic control to suppress immunity, offering a promising strategy to overcome resistance in “cold” tumors.
  • 🔗 查看原文

3.GSE314628 时间转录组分析鉴定分化 Caco-2 细胞中细胞因子诱导的肠道屏障破坏的核心调控因子

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cytokine、gut、regex:gut(-?microbiome)?
  • 📝 描述:Contributors : Cheng-Yuan Kao ; Hyo Shin Yoon ; Matt Kanke ; Chi-Ming Li ; Shining Ma ; Xin LouSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensThe intestinal epithelial barrier is a primary governor for gut homeostasis, and its disruption is a critical factor in the pathogenesis of many inflammatory diseases including Inflammatory Bowel Diseases (IBD). Although strategies to restore and enhance barrier function have been proposed as promising therapeutic approaches for treating inflammation-associated intestinal disorders, most therapies in development act on immune-cell response dampening rather than directly reinforcing epithelial function.
  • 🔗 查看原文

4.GSE313902 马衰老相关骨关节炎的多组学分析突显了肠道微生物组和代谢组的变化

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:aging、gut、regex:gut(-?microbiome)?
  • 📝 描述:Contributors : Lyndah Chow ; Lynn Pezzanite ; Steven DowSeries Type : Expression profiling by high throughput sequencingOrganism : Equus caballusAging-related osteoarthritis (OA) is a leading cause of lameness and reduced performance in horses. Mounting evidence in humans and laboratory species indicates both systemic and local inflammation play a role in OA pathogenesis, with increasing recognition that the gut microbiome contributes to a pro-inflammatory state. However, the role of the gut-joint-axis has not been fully explored in etiopathogenesis of equine OA. Therefore, the aim was to investigate fecal and leukocyte microbiome profiles and host gene expression patterns in horses with naturally occurring aging-related OA compared to controls.
  • 🔗 查看原文

5.GSE308704 P4HA3 通过促进 ACLY 介导的铁死亡抵抗来驱动宫颈癌淋巴转移 [HeLa, SiHa]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、regex:lymph(o|atic)?、resistance
  • 📝 描述:Contributors : Li Yuan ; Hongye Jiang ; Meng Xia ; Junxiu Liu ; Shuzhong Yao ; Chunyu ZhangSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensThe lymph node is the most common site of distant metastasis of cervical cancer (CCa), which elicits dismal prognosis and limited efficiency for treatment. Identification of the factors contributing to CCa lymphatic metastasis is needed to develop effective prevention and treatment strategies. Here, we found upregulation of prolyl 4-hydroxylase subunit alpha 3 (P4HA3), an α-subunit of prolyl hydroxylase, in lymphatic metastatic lesions of cervical cancer, which is strongly associated with poor prognosis. In vitro and in vivo experiments showed that P4HA3 promoted CCa lymphatic metastasis by conferring ATP-citrate lyase (ACLY)-mediated ferroptosis resistance. Mechanistically, P4HA3 stabilizes ACLY protein by competitively inhibiting its interaction with the E3 ubiquitin ligase UBR4, which prevents UBR4-mediated proteasomal degradation of ACLY. ACLY-derived acetyl-CoA enhances H3K27 acetylation (H3K27Ac) modification level in the promoter of SLC7A11 gene, ultimately enhancing SLC7A11 transcription and ferroptosis resistance. Collectively, our study provides a mechanistic understanding of the interplay between ferroptosis resistance and lymph node metastasis, providing a possibility to combat lymph node metastasis in cervical cancer.
  • 🔗 查看原文

6.GSE304077 P4HA3 通过促进 ACLY 介导的铁死亡抵抗来驱动宫颈癌淋巴转移。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、regex:lymph(o|atic)?、resistance
  • 📝 描述:Series Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensThe lymph node is the most common site of distant metastasis of cervical cancer (CCa), which elicits dismal prognosis and limited efficiency for treatment. Identification of the factors contributing to CCa lymphatic metastasis is needed to develop effective prevention and treatment strategies. Here, we found upregulation of prolyl 4-hydroxylase subunit alpha 3 (P4HA3), an α-subunit of prolyl hydroxylase, in lymphatic metastatic lesions of cervical cancer, which is strongly associated with poor prognosis. In vitro and in vivo experiments showed that P4HA3 promoted CCa lymphatic metastasis by conferring ATP-citrate lyase (ACLY)-mediated ferroptosis resistance. Mechanistically, P4HA3 stabilizes ACLY protein by competitively inhibiting its interaction with the E3 ubiquitin ligase UBR4, which prevents UBR4-mediated proteasomal degradation of ACLY. ACLY-derived acetyl-CoA enhances H3K27 acetylation (H3K27Ac) modification level in the promoter of SLC7A11 gene, ultimately enhancing SLC7A11 transcription and ferroptosis resistance. Collectively, our study provides a mechanistic understanding of the interplay between ferroptosis resistance and lymph node metastasis, providing a possibility to combat lymph node metastasis in cervical cancer.
  • 🔗 查看原文

7.GSE294751 阿尔茨海默病小鼠模型的多组学单核分析表明 ACSS2 赋予神经元抵抗 tau 蛋白病变的能力 [ChIP-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:Alzheimer、Neuronal、ChIP-seq
  • 📝 描述:Contributors : Gabor Egervari ; Desi Alexander ; Hua Huang ; Greg Donahue ; Connor Hogan ; Mariel Mendoza ; Hong Xu ; Virginia Lee ; Ben A Garcia ; Nancy M Bonini ; Shelley L BergerSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Mus musculusLoss of cell identity and global epigenomic dysregulation are emerging as key contributors to Alzheimer’s disease (AD). The mechanisms by which protective or risk-conferring epigenetic marks are established and maintained are under intense investigation. ACSS2 (Acetyl-CoA Synthetase 2) is a key metabolic enzyme that is nuclear-localized in neurons. In healthy brains, ACSS2 fuels histone acetylation and drives expression of neuronal genes that regulate learning and memory. Here, we examine how loss of ACSS2 contributes to AD-associated cellular, genomic and behavioral outcomes, focusing on long-term steady state changes. Using a mouse model of human pathological AD-Tau injection, we show that loss of ACSS2 exacerbates Tau-related memory impairments, while dietary supplementation of acetate rescues learning in an ACSS2-dependent manner. Combining state-of-the-art proteomic and genomic approaches, we demonstrate that this effect is accompanied by ACSS2-dependent incorporation of acetate into hippocampal histone acetylation, which facilitates gene expression programs related to learning. We identify the most severely affected hippocampal neuronal populations, including pyramidal cells of the perforant pathway and Cajal-Retzius cells. Overall, these results reveal ACSS2 as a neuroprotective metabolic enzyme in key hippocampal neuronal populations, and dysregulation of which may play an important role in the etiology of AD. These findings may guide development of future therapies for AD, other tauopathies and related dementia.
  • 🔗 查看原文

8.GSE294331 阿尔茨海默病小鼠模型的多组学单核分析揭示 ACSS2 赋予神经元抵抗 tau 蛋白病变的能力 [RNA-seq Acetate]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:Alzheimer、Neuronal、RNA-seq
  • 📝 描述:Contributors : Gabor Egervari ; Desi Alexander ; Hua Huang ; Greg Donahue ; Connor Hogan ; Mariel Mendoza ; Hong Xu ; Virginia Lee ; Ben A Garcia ; Nancy M Bonini ; Shelley L BergerSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusLoss of cell identity and global epigenomic dysregulation are emerging as key contributors to Alzheimer’s disease (AD). The mechanisms by which protective or risk-conferring epigenetic marks are established and maintained are under intense investigation. ACSS2 (Acetyl-CoA Synthetase 2) is a key metabolic enzyme that is nuclear-localized in neurons. In healthy brains, ACSS2 fuels histone acetylation and drives expression of neuronal genes that regulate learning and memory. Here, we examine how loss of ACSS2 contributes to AD-associated cellular, genomic and behavioral outcomes, focusing on long-term steady state changes. Using a mouse model of human pathological AD-Tau injection, we show that loss of ACSS2 exacerbates Tau-related memory impairments, while dietary supplementation of acetate rescues learning in an ACSS2-dependent manner. Combining state-of-the-art proteomic and genomic approaches, we demonstrate that this effect is accompanied by ACSS2-dependent incorporation of acetate into hippocampal histone acetylation, which facilitates gene expression programs related to learning. We identify the most severely affected hippocampal neuronal populations, including pyramidal cells of the perforant pathway and Cajal-Retzius cells. Overall, these results reveal ACSS2 as a neuroprotective metabolic enzyme in key hippocampal neuronal populations, and dysregulation of which may play an important role in the etiology of AD. These findings may guide development of future therapies for AD, other tauopathies and related dementia.
  • 🔗 查看原文

9.GSE313089 转录组分析鉴定出细胞周期蛋白 D–CDK4/6 轴是膀胱癌顺铂耐药性的可药物靶向介质 [RNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、resistance、RNA-seq
  • 📝 描述:Contributors : Chun-Han Chen ; Tsung-Han HsiehSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensPurpose Cisplatin resistance remains a critical challenge in bladder cancer (BC). This study aimed to define molecular drivers of cisplatin resistance and to assess potential therapeutic targets that may help restore treatment responsiveness. Methods Integrative transcriptomic analyses were performed using The Cancer Genome Atlas (TCGA) cohort to compare cisplatin non-responders with responders, alongside a cisplatin-resistant BC cell model to identify dysregulated pathways. Functional studies, including siRNA-mediated knockdown, SRB viability assays, flow cytometry, western blotting, and microarray-based transcriptomics, were used to characterize the dysregulated pathways. Results Both TCGA data and resistant BC cells exhibited upregulation of CCND1 and enrichment of E2F target genes. Silencing of Cyclin D1 restored cisplatin sensitivity in resistant cells. Abemaciclib selectively inhibited proliferation of cisplatin-resistant BC cells, reduced RB phosphorylation, induced sub-G1 accumulation, and suppressed expression of key regulators of cell-cycle progression and homologous recombination repair. Combined treatment with abemaciclib and cisplatin synergistically suppressed the proliferation of cisplatin-resistant BC cells in vitro and resulted in significantly greater tumor growth inhibition in an RT112 xenograft model in vivo. Conclusion Activation of the Cyclin D1/CDK4/6–E2F axis is a key driver of cisplatin resistance and demonstrate that CDK4/6 inhibition reduces proliferative capacity and DNA repair competency while enhancing cisplatin responsiveness. Targeting this pathway represents a rational therapeutic strategy for advanced or refractory BC.
  • 🔗 查看原文

10.GSE297164 RNA-seq 分析放射性碘处理的分化型甲状腺癌细胞揭示碘耐受过程中 DDR 通路的调控

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、RNA-seq、pathway
  • 📝 描述:Contributors : Xiaotong Qiu ; Yongji Jiang ; Simin Liu ; Li Zhao ; Chuanzi Zuo ; Yanlei Huo ; Chao MaSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensAim: To investigate the role of ataxia-telangiectasia mutated (ATM) in thyroid cancer (TC) progression and radioactive iodine (RAI) resistance, exploring its potential as a therapeutic target. Methods: Single-cell RNA sequencing of 28 TC tumors / normal tissues traced ATM dynamics during dedifferentiation. Clinical validation used tissue microarrays (TMAs) on 89 RAI resistance (RAIR) and RAI-avid differentiated thyroid cancer (DTC) specimens. Preclinical models evaluated the synergy between the ATM inhibitor AZD1390 and RAI. Mechanistic studies employed RNA-seq, comet assays, cell cycle analysis, and AP site quantification. Results: scRNA-seq revealed progressive ATM upregulation during malignant progression, correlating with cell cycle dysregulation. TMAs confirmed elevated ATM expression in anaplastic thyroid cancer (ATC) vs. papillary thyroid cancer, PTC and RAIR tumors. In vivo, AZD1390 + 131I synergistically suppressed tumor growth and enhanced apoptosis. RAI predominantly induced apurinic/apyrimidinic (AP) sites rather than double-strand breaks (DSBs). ATM inhibition disrupted base excision repair (BER) coordination and G2/M checkpoint control, forcing cells with unresolved AP sites into mitotic catastrophe. Conclusion: ATM mediates RAIR in thyroid cancer by promoting AP site repair and inducing cell cycle arrest. Inhibiting ATM converts repairable damage into lethal DNA lesions, restoring RAI sensitivity, suggesting ATM as a therapeutic target for RAI-refractory thyroid cancer.
  • 🔗 查看原文

💡 该来源还有 77 条内容,详见 文末

🧪 博客更新 (1条)

详细内容(全部1条)

1. 科学家可能已经找到了阿尔茨海默病真正的诱因

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:Alzheimer
  • 📝 描述:Scientists may have uncovered a hidden trigger behind Alzheimer’s disease. Instead of plaques being the root cause, amyloid beta appears to interfere with tau, a protein that helps keep neurons functioning properly. This disruption could set off the damage that eventually leads to the disease’s most recognizable brain changes.
  • 🔗 查看原文

📊 关键词统计

关键词出现次数
cancer21
RNA-seq17
transcriptome8
single-cell7
metabolic6
immune5
sequencing5
Alzheimer4
inflammation4
regex:intestin(eal)
tumor4
regex:lymph(oatic)?
resistance4
ATAC-seq4
Neuronal4
scRNA3
gut3
regex:gut(-?microbiome)?3
transcriptomics3
histone3

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🧬 数据前沿 其他内容 (77条)

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