科研日报 2026-05-13

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📅 Daily Report - 2026-05-13

今日筛选出 51 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: 发现癌细胞在微环境感知和转移调控中的关键作用,以及新型免疫治疗策略的潜在突破。

主要方向

  • 肿瘤微环境与免疫应答:聚焦结直肠癌、胰腺癌、前列腺癌等多种癌症的肿瘤微环境,包括免疫细胞(如巨噬细胞、Treg细胞)、癌细胞(如CSCs)与肿瘤进展、转移及免疫治疗响应的关系。
  • 细胞重编程与表观遗传调控:探索细胞重编程机制,以及酮症饮食等作为表观遗传疗法在癫痫和癌症中的应用。
  • 器官特异性细胞异质性:研究肾上腺、心脏、结肠等组织中细胞的异质性及其在生理和病理过程中的作用。

技术亮点

  • 单细胞/空间转录组学:广泛应用于解析肿瘤微环境、免疫细胞亚型、器官细胞异质性等复杂体系。
  • 新型RNA测序技术:用于基因表达谱、miRNA表达谱及染色质结合谱的分析,深入揭示分子调控机制。

🧪 博客更新

今日焦点: 果糖代谢重塑机制的揭示,以及新型无凝胶RNA文库制备技术的突破。

主要方向

  • 探索果糖如何主动促进脂肪储存和代谢性疾病。
  • 提升下一代RNA测序的灵敏度和小型RNA定量精度。

技术亮点

  • 首次提出果糖区别于葡萄糖的独特代谢影响。
  • 开发无凝胶文库制备技术,显著减少引物二聚体,提高低输入量样本的RNA测序效果。

📚 分类浏览

🧬 数据前沿 (49条)

详细内容(前10条)

1.GSE319722 空间动态将PD-L1和肿瘤相关巨噬细胞富集微环境与微卫星稳定型结直肠癌的免疫和间质状态联系起来

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、cancer、immune、macrophage、spatial
  • 📝 描述:Contributors : Carolina Martínez-Ciarpaglini ; Brenda Palomar de LucasSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensMicrosatellite-stable colorectal cancer comprises a heterogeneous group of tumors generally considered “immune cold” due to limited neoantigen generation and T-cell exclusion or inactivation. Current evidence indicates that the composition of T and B immune cells within the tumor microenvironment represents a prognostically relevant factor, significantly associated with both tumor expression profiles and molecular subtypes. We conducted an exploratory analysis to identify prognostically relevant immune cell components in this group of tumors and to investigate corresponding differences in RNA-based bulk expression and high-resolution spatial transcriptomic profiles. A total of 254 cases of localized mismatch repair–proficient colorectal cancer cases were evaluated. Our findings revealed PD-L1 expression as a robust, independent prognostic biomarker associated with favorable outcomes in this specific population. Bulk RNA expression analysis showed that PD-L1–negative tumors exhibited an expression profile consistent with abundant cancer-associated fibroblast infiltration, increased matrix stiffness, and impaired immune activation—features aligned with tumor progression and poorer clinical outcomes. In contrast, PD-L1–positive tumors displayed stromal programs enriched in immune activation and controlled remodeling, consistent with an immunologically active microenvironment. Spatial transcriptomics added an additional layer of evidence, revealing that epithelial-to-mesenchymal transition–related programs can dominate stromal niches in PD-L1–negative tumors, particularly within macrophage-enriched stromal regions. In conclusion, our observations suggest a crosstalk link between PD-L1 expression on immune cells and immune-activated vs mesenchymal-dominant states driven within tumor-associated macrophage-enriched stromal niches. These results provide insight into the biological mechanisms underlying disease progression and highlight tumor-associated macrophages as a potential therapeutic target to overcome immune resistance particularly in PD-L1–negative MSS-CRC tumors.
  • 🔗 查看原文

2.GSE327985 慢性不可预测轻度应激 (CUMS) 小鼠癌症模型中肿瘤内 CD45+ 免疫细胞的单细胞 RNA 测序

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、immune、sequencing、single-cell
  • 📝 描述:Contributors : Julia A Brown ; Hilal Bashir ; Melody Y ZengSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusWe performed single-cell RNA sequencing (scRNA-seq) of intratumoral CD45+ Immune cells from mice subjected to chronic unpredictable mild stress (CUMS) or control conditions. Cells were multiplexed using hashtag oligonucleotides (HTO1-HTO4, TotalSeq-C) and sequenced using the 10x Genomics 5-prime Gene Expression + Feature Barcode + B cell receptor (BCR) V(D)J workflow (Well 3). This dataset contains GEX profiles of intratumoral B cells from 4 samples (2 conditions x 2 biological replicates; 29,456 cells total). BCR V(D)J sequencing data (IGH/IGK/IGL; 1,107 contigs from 604 B cells) from the same tumor well are also provided.
  • 🔗 查看原文

3.GSE292567 癌症干细胞是肿瘤微环境的超敏传感器,在调控转移动力学中发挥作用

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、cancer、tumor microenvironment
  • 📝 描述:Series Type : Expression profiling by high throughput sequencing ; Genome binding/occupancy profiling by high throughput sequencingOrganism : Homo sapiensThis SuperSeries is composed of the SubSeries listed below.
  • 🔗 查看原文

4.GSE292485 癌症干细胞是肿瘤微环境的超敏传感器,在调控转移动力学中发挥作用

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、cancer、tumor microenvironment
  • 📝 描述:Contributors : Binwu Tang ; Howard Yang ; Maxwell Lee ; Lalage M WakefieldSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensCancer stem cells (CSCs) are key drivers of metastasis and therapy resistance but have been challenging to visualize and study in situ. Using a fluorescent CSC reporter, we observed very different population dynamics for CSCs and nonCSCs during metastatic lung colonization in breast cancer models. CSC expansive self-renewal drives early lesion formation before switching to a maintenance mode of balanced self-renewal and differentiation, whereupon nonCSC proliferation takes over as the main driver of metastatic expansion. Mechanistic analyses showed that CSCs are hyper-responsive to microenvironmental cues such as cell crowding and nutrient availability, suggesting a novel role for CSCs as sensors and early responders to fluctuating local conditions in the tumor. Most inputs converge on YAP/TAZ/TEAD, with heightened CSC sensitivity and response supported by elevated receptor expression and increased chromatin accessibility around enhancers with TEAD binding sites. Targeting inputs to the YAP/TAZ/TEAD node reversed chemotherapy-induced enrichment of CSCs in lung metastases.
  • 🔗 查看原文

5.GSE292476 癌症干细胞是肿瘤微环境的超敏传感器,在调控转移动力学中发挥作用

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、cancer、tumor microenvironment
  • 📝 描述:Contributors : Binwu Tang ; Howard Yang ; Maxwell Lee ; Lalage M WakefieldSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensCancer stem cells (CSCs) are key drivers of metastasis and therapy resistance but have been challenging to visualize and study in situ. Using a fluorescent CSC reporter, we observed very different population dynamics for CSCs and nonCSCs during metastatic lung colonization in breast cancer models. CSC expansive self-renewal drives early lesion formation before switching to a maintenance mode of balanced self-renewal and differentiation, whereupon nonCSC proliferation takes over as the main driver of metastatic expansion. Mechanistic analyses showed that CSCs are hyper-responsive to microenvironmental cues such as cell crowding and nutrient availability, suggesting a novel role for CSCs as sensors and early responders to fluctuating local conditions in the tumor. Most inputs converge on YAP/TAZ/TEAD, with heightened CSC sensitivity and response supported by elevated receptor expression and increased chromatin accessibility around enhancers with TEAD binding sites. Targeting inputs to the YAP/TAZ/TEAD node reversed chemotherapy-induced enrichment of CSCs in lung metastases.
  • 🔗 查看原文

6.GSE253850 人类和小鼠肾上腺具有物种特异性和性别二态性异质性以及组织更新的特征[空间转录组学]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:spatial、spatial transcriptomics、transcriptomics
  • 📝 描述:Contributors : Maria E Kastriti ; Denis Maksimov ; Julian Petersen ; Julia Krupinova ; Marina Utkina ; Sergei Popov ; Dmitry Beltsevich ; Anna Roslyakova ; Olga Glazova ; Samira Kaziakhmedova ; Alina Ryabova ; Anna Kuznezova ; Anastasia Shcherbakova ; Ekaterina Bondarenko ; Zoia Antysheva ; Eugene Albert ; Lilia Urusova ; Anastasia Lapshina ; Anastassia Chevais ; Ekaterina Avsievich ; Valentin Trofimov ; Galina Melnichenko ; Natalya Mokrysheva ; Ivan Dedov ; Oleg Gusev ; Andreas Heinzel ; Rainer Oberbauer ; Mary Woroncow ; Pavel Volchkov ; Peter V Kharchenko ; Igor AdameykoSeries Type : Expression profiling by high throughput sequencing ; OtherOrganism : Homo sapiensThe adrenal gland is a fundamental endocrine organ exhibiting constant renewal. Despite extensive work in rodents, human-specific aspects of hormone-producing cell populations, stem cells, and self-renewal mechanisms are not fully understood. To fill this knowledge gap and address species-specific features, we generated high density single-cell and spatial transcriptomics atlases of adult human and mouse adrenal glands using Visium, VisiumHD and Stereo-seq, covering a spectrum of sexes and ages. Our comparisons between human and murine adrenal gland revealed significant evolutionary divergence despite homology in function of specific regions, which questiones the applicability of mouse models in studies of human adrenal disorders. Self-renewal mechanisms in adrenocortical populations that were previously discovered in mice also revealed human-specific features or were confronted by human-specific transitions not evident in rodents. The latter included specific perivascular mesenchymal progenitors, and dispersed SF1+/EZH2+ progenitor cells, which implies that human adrenocortical cells may be renewed in a localized manner in addition to the centripetal model. We also engaged in cross-comparison of our adult human adrenals with fetal stages to reveal developmental strategies still operating as a part of self-renewal in adults. Unexpectedly, human SF1+/EZH2+ progenitors turned out to be operating during adrenocortical development and later during adult stages, albeit in different degrees. At last, we revealed sex-specific differences in human cholesterol metabolism and other features reflecting human and mouse sexual dimorphism in adrenal glands. Overall, our new comparative mouse-human atlases shall provide an additional resource for further molecular interrogations of adrenal gland biology and p…
  • 🔗 查看原文

7.GSE330526 靶向αvβ5整合素可改变胰腺癌富含TGF-β的肿瘤微环境

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、cancer、tumor microenvironment
  • 📝 描述:Series Type : Expression profiling by high throughput sequencingOrganism : Mus musculusPancreatic ductal adenocarcinoma (PDAC) is notorious for its aggressive, therapy-resistant nature that is in part driven by the desmoplastic, hypo-perfused, and immunosuppressive tumor microenvironment (TME). Here, we demonstrated that the αv integrin- and neuropilin-1 (NRP-1)-dual targeting iRGD peptide reverses some of these TME features by inhibiting transforming growth factor-β (TGF-β) activation in the tumor, a process mediated by the αvβ5 integrin. In addition to PDAC epithelial cells and fibroblasts, regulatory T cells (Tregs) in PDAC tumors also expressed the αvβ5 integrin and NRP-1. The αvβ5+ Tregs potently inhibited T cell proliferation, and systemic iRGD therapy not only depleted αvβ5+ Tregs from PDAC tumors but also reduced their αvβ5- counterparts. Mechanistically, iRGD inhibited the activation of TGF-β mediated by the αvβ5-rich TME, thereby depriving Tregs of the cytokine essential for their development and maintenance. NRP-1-dependent tumor penetration was required for this effect because a traditional RGD peptide without an NRP-1-binding motif failed to inhibit TGF-β signaling or deplete Tregs in vivo. Treatment with iRGD induced a series of additional TME changes, such as improved vascular patency and perfusion, reduced stromal fibers, and increased CD8+ T cell entry into the core of the tumors. Combining iRGD with immune checkpoint blockade led to an enhanced anti-tumor effect. Together, these findings support targeting the αvβ5 integrin with affinity ligands such as iRGD as a potential approach to enhance immunotherapy efficacy against PDAC and other desmoplastic tumors with high TGF-β and αvβ5 expression.
  • 🔗 查看原文

8.GSE319419 粒子重编程 TLR-铁死亡轴和免疫代谢途径抑制髓系抑制以改善前列腺癌中的检查点阻断 [RNA-Seq Hi-Myc 小鼠]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、TLR、RNA-seq
  • 📝 描述:Contributors : Nabil A Siddiqui ; Michelle S BradburySeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusThe limited efficacy of immunotherapies (IT) in advanced prostate cancer (PCa) stems from a tumor microenvironment where myeloid-driven immune suppression, stromal remodeling, and metabolic barriers converge to limit antitumor immunity. We highlight the immuno-metabolic properties of an ultrasmall PSMA-targeting silica particle therapy as a first-in-class strategy to reprogram the Toll-like receptor (TLR)–ferroptosis axis in Myc-driven PCa. As single agents, these particles suppress lipid and steroid biosynthesis, disrupt lipid peroxidation control, and impair nutrient flux, sensitizing tumors to ferroptosis. Coordinated redox remodeling, stromal reprogramming, and innate immune activation reverse myeloid suppression and promote CD8⁺ T cell infiltration. When combined with CSF-1R inhibition and/or immune checkpoint blockade, particles suppress tumor growth, extend survival beyond 100 days, and achieve up to 50% complete remissions in Myc-overexpressing models. These findings position TLR–ferroptosis axis remodeling as a mechanistic blueprint for rational, particle-driven ITs with broad translational potential in PCa and other immunologically refractory malignancies.
  • 🔗 查看原文

9.GSE301231 结肠 Treg 的单细胞 RNA 测序分析:由对食物、微生物或自身抗原有反应的不同 TCR 驱动的天然 Treg 或 pTreg

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:regex:micro(b|be|bial|organism)、RNAseq、single-cell
  • 📝 描述:Contributors : Xinxin Chi ; Diane Mathis ; Christophe BenoistSeries Type : Expression profiling by high throughput sequencing ; OtherOrganism : Mus musculusAntigen-specific regulatory T cells (Tregs) in the gut are essential for maintaining immune tolerance, yet the contributions of different antigen sources and TCR identities to peripheral Treg (pTreg) differentiation remain poorly understood. In this study, we replaced endogenous TCRs in CD4⁺ Tconv cells (CD45.2⁺) with defined TCRs using an AAV-based system. Tconv cells expressing TCRs reactive to food (TF2.2, TF2.7, TF2.6), E. coli Nissle (TM3.5, TM2.3, TM1.2), or self antigens (TS2.3, TS2.1) were transferred into CD45.1⁺ hosts carrying the corresponding antigens. Ten days post-transfer, we performed single-cell RNA sequencing on donor-derived pTreg cells sorted from pooled mesenteric lymph nodes (mLNs), based on Foxp3-GFP expression. In parallel, we profiled TCR-edited transferred cells that did not convert to Foxp3⁺. As negative controls, we included non-edited and TCR-negative donor cells that had undergone the same in vitro culture and transfer process but did not receive differentiation-inducing signals. For comparison with endogenous T cell populations, we also included host-derived CD25hi Tregs as well as GFP⁺ and GFP⁻ cells from age-matched Foxp3-GFP mice.
  • 🔗 查看原文

10.GSE330256 肿瘤来源的 miR200a 通过 Wnt5a/IL-6/B7-H4 轴抑制卵巢癌转移 [RNA-seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、cancer、RNA-seq
  • 📝 描述:Contributors : He Fei ; Lina Yang ; Fengyin JiangSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensGene expression analysis in human Ovarian Cancer cells(HEY) treated with gain of function of miR200a.
  • 🔗 查看原文

💡 该来源还有 39 条内容,详见 文末

🧪 博客更新 (2条)

详细内容(全部2条)

1. 科学家表示,这种常见的甜味剂可能正在悄然改变你的新陈代谢。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:metabolism
  • 📝 描述:Researchers say fructose is not just “empty calories” — it may actively push the body toward fat storage and metabolic disease. A new review found that fructose affects the body differently from glucose, disrupting normal energy regulation and promoting processes linked to obesity, insulin resistance, and cardiovascular problems.
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2. 用于下一代RNA测序和小RNA定量分析的无凝胶文库制备

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:sequencing
  • 📝 描述:RNA sequencing sensitivity improves with gel-free library preparation, reducing primer dimer artifacts and enhancing small RNA quantification from lower sample inputs…
  • 🔗 查看原文

📊 关键词统计

关键词出现次数
cancer14
RNA-seq8
tumor7
macrophage6
immune4
tumor microenvironment4
sequencing4
cardiac4
single-cell3
inflammation3
KRAS3
scRNA2
spatial2
transcriptomics2
TLR2
ChIP-seq2
Alzheimer2
epigenetic1
transcriptome1
metabolic1

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🧬 数据前沿 其他内容 (39条)

📅 报告生成时间:2026-05-12 22:38
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