科研日报 2025-12-02

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📅 Daily Report - 2025-12-02

今日筛选出 152 条内容,来自 2 个来源

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🧬 数据前沿

今日焦点: 富集CD200+ CD8 T细胞,通过精氨酸剥夺激活巨噬细胞交叉呈递,显著提升抗肿瘤免疫。

主要方向

  • 探索精氨酸剥夺对免疫细胞功能及抗肿瘤作用的影响。
  • 研发新型双抗原DNA疫苗,诱导针对免疫抑制性口腔癌的强效抗肿瘤免疫。
  • 利用多组学整合方法(表观遗传学、空间转录组学)解析脊索瘤微环境。

技术亮点

  • 结合scRNA-seq、ATAC-seq等技术,全面剖析免疫细胞亚群在肿瘤及疾病发生发展中的作用。
  • 应用空间转录组学技术,精细绘制组织内免疫细胞动态分布与功能。

🧪 博客更新

今日焦点: 科学界首次揭示了阳光如何关闭皮肤内源性癌症防御机制,并阐明了果糖如何悄然加剧免疫细胞的炎症反应。

主要方向

  • 阐明阳光暴露导致皮肤细胞内炎症失控及癌症风险升高的具体分子机制。
  • 揭示果糖如何通过增加免疫细胞上的炎症受体,提升其对细菌毒素的敏感性。

技术亮点

  • 发现阳光激活的“开关”调控皮肤癌防御。
  • 识别果糖诱导的免疫细胞超敏反应。

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🧬 数据前沿 (150条)

详细内容(前10条)

1.GSE311149 CD200+ CD8 T 细胞通过精氨酸剥夺生成,激活巨噬细胞交叉呈递并改善抗肿瘤免疫[scRNA-Seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、immunity、T cell、macrophage、scRNA
  • 📝 描述:Contributors : Qianlong Kang ; Zedong Jiang ; Keqin Tan ; Xuelei MaSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusArginine is indispensable for both tumor progression and the function of immune cells, yet how arginine deprivation within the tumor microenvironment shapes anti-tumor immunity has remained unclear. In this study, we established an in vivo arginine-restriction model using a diet lacking arginine, which significantly suppressed tumor growth and activated global anti-tumor immune responses. Mechanistically, arginine deprivation triggered the integrated stress response in CD8+ T cells via the GCN2–cREL signaling axis, leading to elevated CD200 expression. These CD200+ CD8+ T cells in turn enhanced the antigen cross-presentation capacity of tumor-associated macrophages through CD200–CD200R interactions, forming a cooperative immune network that reinforced anti-tumor activity. Moreover, this arginine deprivation–induced cellular synergy improved the therapeutic efficacy of immunotherapy in colorectal cancer models. We further conducted a single-arm phase I clinical trial (NCT07038044), which demonstrated that an arginine-free diet is both feasible and safe for modulating systemic immunity in patients. Together, our findings provide a new conceptual framework for understanding the role of arginine in reshaping the tumor immune microenvironment and highlight arginine restriction as a promising and clinically translatable anti-tumor strategy.
  • 🔗 查看原文

2.GSE311148 CD200+ CD8 T 细胞通过精氨酸剥夺生成,激活巨噬细胞交叉呈递并改善抗肿瘤免疫[RNA-Seq 2]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、immunity、T cell、macrophage、RNA-seq
  • 📝 描述:Contributors : Qianlong Kang ; Zedong Jiang ; Keqin Tan ; Xuelei MaSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusArginine is indispensable for both tumor progression and the function of immune cells, yet how arginine deprivation within the tumor microenvironment shapes anti-tumor immunity has remained unclear. In this study, we established an in vivo arginine-restriction model using a diet lacking arginine, which significantly suppressed tumor growth and activated global anti-tumor immune responses. Mechanistically, arginine deprivation triggered the integrated stress response in CD8+ T cells via the GCN2–cREL signaling axis, leading to elevated CD200 expression. These CD200+ CD8+ T cells in turn enhanced the antigen cross-presentation capacity of tumor-associated macrophages through CD200–CD200R interactions, forming a cooperative immune network that reinforced anti-tumor activity. Moreover, this arginine deprivation–induced cellular synergy improved the therapeutic efficacy of immunotherapy in colorectal cancer models. We further conducted a single-arm phase I clinical trial (NCT07038044), which demonstrated that an arginine-free diet is both feasible and safe for modulating systemic immunity in patients. Together, our findings provide a new conceptual framework for understanding the role of arginine in reshaping the tumor immune microenvironment and highlight arginine restriction as a promising and clinically translatable anti-tumor strategy.
  • 🔗 查看原文

3.GSE311146 CD200+ CD8 T 细胞通过精氨酸剥夺生成,激活巨噬细胞交叉呈递并改善抗肿瘤免疫[RNA-Seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、immunity、T cell、macrophage、RNA-seq
  • 📝 描述:Contributors : Qianlong Kang ; Zedong Jiang ; Keqin Tan ; Xuelei MaSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusArginine is indispensable for both tumor progression and the function of immune cells, yet how arginine deprivation within the tumor microenvironment shapes anti-tumor immunity has remained unclear. In this study, we established an in vivo arginine-restriction model using a diet lacking arginine, which significantly suppressed tumor growth and activated global anti-tumor immune responses. Mechanistically, arginine deprivation triggered the integrated stress response in CD8+ T cells via the GCN2–cREL signaling axis, leading to elevated CD200 expression. These CD200+ CD8+ T cells in turn enhanced the antigen cross-presentation capacity of tumor-associated macrophages through CD200–CD200R interactions, forming a cooperative immune network that reinforced anti-tumor activity. Moreover, this arginine deprivation–induced cellular synergy improved the therapeutic efficacy of immunotherapy in colorectal cancer models. We further conducted a single-arm phase I clinical trial (NCT07038044), which demonstrated that an arginine-free diet is both feasible and safe for modulating systemic immunity in patients. Together, our findings provide a new conceptual framework for understanding the role of arginine in reshaping the tumor immune microenvironment and highlight arginine restriction as a promising and clinically translatable anti-tumor strategy.
  • 🔗 查看原文

4.GSE311145 CD200+ CD8 T 细胞通过精氨酸剥夺生成,激活巨噬细胞交叉呈递并改善抗肿瘤免疫 [ATAC-Seq]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、immunity、T cell、macrophage、ATAC-seq
  • 📝 描述:Contributors : Qianlong Kang ; Zedong Jiang ; Keqin Tan ; Xuelei MaSeries Type : Genome binding/occupancy profiling by high throughput sequencingOrganism : Mus musculusArginine is indispensable for both tumor progression and the function of immune cells, yet how arginine deprivation within the tumor microenvironment shapes anti-tumor immunity has remained unclear. In this study, we established an in vivo arginine-restriction model using a diet lacking arginine, which significantly suppressed tumor growth and activated global anti-tumor immune responses. Mechanistically, arginine deprivation triggered the integrated stress response in CD8+ T cells via the GCN2–cREL signaling axis, leading to elevated CD200 expression. These CD200+ CD8+ T cells in turn enhanced the antigen cross-presentation capacity of tumor-associated macrophages through CD200–CD200R interactions, forming a cooperative immune network that reinforced anti-tumor activity. Moreover, this arginine deprivation–induced cellular synergy improved the therapeutic efficacy of immunotherapy in colorectal cancer models. We further conducted a single-arm phase I clinical trial (NCT07038044), which demonstrated that an arginine-free diet is both feasible and safe for modulating systemic immunity in patients. Together, our findings provide a new conceptual framework for understanding the role of arginine in reshaping the tumor immune microenvironment and highlight arginine restriction as a promising and clinically translatable anti-tumor strategy.
  • 🔗 查看原文

5.GSE310571 双抗原狗骨DNA疫苗可诱导针对免疫抑制性口腔癌的强效抗肿瘤免疫力

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、immunity、vaccine、antigen
  • 📝 描述:Contributors : Grace Tan ; Natalia Savelyeva ; Chuan Wang ; Martina Meschis ; Christian OttensmeierSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusImmunotherapy has demonstrated durable responses in a subset of patients with head and neck cancer, offering potential survival benefits to those with poor prognoses and resistance to first-line treatments. Despite this, only a modest 15-20% are shown to respond. Cancer vaccines have recently demonstrated efficacy in some solid tumours including melanoma, as well as immune-cold pancreatic and liver cancer, inducing a cytotoxic T cell response and eradicating cancer cells. Our previous research identified cancer testis antigens MAGED4B and FJX1 as highly immunogenic and overexpressed in the majority of HPV-independent head-and-neck squamous cell carcinoma (HPVnegHNSCC) patients. In this study, we developed a novel DNA vaccine utilising the non-plasmid doggyboneTM (dbDNATM) platform to deliver these antigens for targeting head and neck cancer. A series of doggyboneTM vaccine prototypes targeting MAGED4B and FJX1 were generated both to optimise the backbone and to present antigens in an immunogenic form. Vaccine immunogenicity and cytotoxicity were accessed using interferon-gamma. Enzyme-Linked Immunospot (ELISpot) assay. Vaccine efficacy was evaluated in the MOC-2 oral cancer model through tumour monitoring, assessing the infiltration of CD4+, CD8+ and regulatory T cells by immunohistochemistry as well as RNAseq analysis. The optimised dual antigen dbDNA DNA vaccine significantly reduced tumour size. Furthermore, combining the vaccine with anti-PD1 therapy significantly delayed tumour growth and metastasis, thereby enhancing survival in tumour-bearing mice. Vaccination resulted in significant recruitment of CD4+ and CD8+ T cells but not regulatory T cells. IHC analysis also confirmed the ability of dbDNA™ vaccine TGL-100 OPT in shifting M2 to M1 polarisation, highlighting their therapeutic promise. Transcriptomic analysis of immune cells in the tumour indicates that vaccination promotes long term anti-tumour responses by upregulating memory T cell genes T cell factor-7 (Tcf7) and lymphoid enhancer binding factor 1 (Lef1) while suppressing PDL-1 and inhibiting anti-inflammatory cytokines such as IL-10 and IL-27. These findings suggest that our cancer vaccine effectively recruits cytotoxic T cells to immune cold tumours, minimising the host’s immune inhibitory mechanisms within…
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6.GSE308436 骶骨脊索瘤表观遗传学、空间转录组学和免疫微环境的多模态整合研究

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:immune、spatial、spatial transcriptomics、transcriptomics
  • 📝 描述:Contributors : Yee H Foong ; George Jour ; Garima Sinha ; Jamal Benhamida ; Nathan Aleynick ; Yanyun Li ; Travis Hollmann ; Mrinal Gounder ; Rohan Sardana ; Carla Saoud ; Max Vaynrub ; Patrick Boland ; Rami Vanguri ; Meera HameedSeries Type : Methylation profiling by genome tiling arrayOrganism : Homo sapiensMultimodal study elucidated the complex epigenetic and immunological landscape in sacral chordomas
  • 🔗 查看原文

7.GSE310136 精准纳米疗法重塑肿瘤相关巨噬细胞,逆转胰腺癌中的免疫抑制。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、cancer、macrophage
  • 📝 描述:Contributors : Yunching Chen ; Hsin-Mei LeeSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusPancreatic ductal adenocarcinoma (PDAC) is characterized by an immunosuppressive stroma rich in tumor-associated macrophages (TAMs) that limit the therapeutic efficacy. We introduce a TAM-targeted nanotherapy platform that selectively delivers either a CSF1R inhibitor or the STING agonist cGAMP to immunosuppressive TAMs. While CSF1R inhibitor–loaded nanoparticles efficiently depleted TAMs and produced moderate antitumor effects, TAM-targeted cGAMP nanoparticles reprogrammed TAMs into immune-stimulating effectors. This reprogramming normalized aberrant vasculature, alleviated desmoplasia, and enhanced infiltration and activation of cytotoxic immune cells. In combination with gemcitabine, PD-1 checkpoint blockade, or CAR-NK cell therapy, TAM-targeted STING activation provided an in situ immunostimulatory signal that markedly improved antitumor efficacy in preclinical PDAC models. Ex vivo efficacy in human PDAC tissues and a favorable safety profile show the translational potential of this TAM-targeted nanotherapy to overcome the immune desert of PDAC.
  • 🔗 查看原文

8.GSE306162 SPP1+巨噬细胞促进接触性过敏引起的毛发生长[空间转录组学]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:spatial、spatial transcriptomics、transcriptomics
  • 📝 描述:Contributors : Kai-Rong Huang ; Sabrina Mai-Yi Fan ; Sung-Jan LinSeries Type : OtherOrganism : Mus musculusUsing Visium HD spatial transcriptomics and immunostaining, we mapped skin compartment dynamics during DPCP-induced allergic contact dermatitis. Dermal white adipose tissue transitioned from metabolic homeostasis to immune activation and inflammatory remodeling, accompanied by sustained lipolysis. Concurrently, CD45⁺ immune cells accumulated in the lower dermis and dWAT. These findings identify dWAT as an immune-metabolic hub orchestrating inflammatory progression and highlight spatial transcriptomics as a powerful tool for dissecting skin niche regulation.
  • 🔗 查看原文

9.GSE296929 E2F4/SETD1A轴介导的METTL3甲基化通过抑制内源性逆转录元件表达促进肿瘤免疫逃逸

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、immune、methylation
  • 📝 描述:Series Type : Methylation profiling by high throughput sequencing ; Expression profiling by high throughput sequencingOrganism : Homo sapiensColorectal cancer (CRC) progression and recurrence persist as major clinical challenges despite standard therapies. Emerging evidence underscores that tumor relapse arises from crosstalk between malignant cells and the immunosuppressive microenvironment, yet the role of non-histone lysine methylation in this interplay remains unclear. Here, we identify di-methylation of lysine 513 (K513) on methyltransferase-like 3 (METTL3) as a key epigenetic modification associated with CRC progression and recurrence. Mechanistically, we reveal that SETD1A catalyzes METTL3 K513 methylation, enhancing its binding affinity to S-adenosylmethionine (SAM) and augmenting RNA m⁶A deposition. Strikingly, METTL3 methylation suppresses endogenous retroelements expression, leading to impaired type I interferon responses and tumor immune evasion. We further uncover a fluorouracil-induced E2F4/SETD1A/METTL3 regulatory axis, wherein E2F4 self-regulation activates SETD1A to drive METTL3 methylation. Targeting this axis through pharmacological inhibition of E2F4 or genetic disruption of METTL3 methylation synergizes with immune checkpoint blockade (ICB), significantly suppressing tumor growth. Our findings unveil a methylation-dependent regulatory mechanism that reshapes the tumor immune microenvironment, offering a novel therapeutic strategy for CRC.
  • 🔗 查看原文

10.GSE276263 Epigenetic insights into fertility: involvement of immune cell methylation in dairy cows reproduction

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:immune、epigenetic、methylation
  • 📝 描述:Contributors : Lotfi Bouzeraa ; Helene Martin ; Clement Plessis ; Pascal Dufour ; Jessica C Marques ; Sydney Moore ; Ronaldo Cerri ; Marc-Andre SirardSeries Type : OtherOrganism : Bos taurusInfertility and post-partum reproductive diseases present significant clinical and economic challenges, particularly in cattle farming. Successful gestation is largely contingent upon the ability of the maternal immune system to recognize and tolerate the embryo. The role of immune cells in promoting fetal-maternal immune tolerance is critical, underlining their importance in post-partum fertility. In this context, DNA methylation in hematopoietic cells may play a pivotal role in determining the susceptibility of the animal to post-partum fertility problems. Identifying epigenetic changes linked to infertility is therefore crucial for advancing sustainable animal production. Characterizing the methylome of immune cells in relation to fertility will enable early phenotyping, setting the stage for innovative methods to detect potential subfertility in animals. In our study, whole epigenome sequencing and enzymatic methyl-seq (EM-seq) were employed to analyze the DNA methylation patterns in total blood collected from twelve Holstein cows raised on the same farm before any disease appeared. This approach helped to map the epigenetic modification profiles of genes associated with the varying fertility phenotypes observed the following year, revealing significant differences between fertile and subfertile cows. We identified 216,990 differentially methylated cytosines (DMCs), with three genes, Interferon tau-3 (IFNT3), KIAA0825, and RAS-Related Protein 2A (RAP2A), showing high significance. Additionally, 23 key genes affected by DMCs across five regions (transcription start sites-TSS shores, introns, exons, distal intergenic areas, and downstream of genes) were identified. Notably, Interferon tau-3 emerged as especially crucial due to its role in early embryonic development and the establishment of gestation in cattle, with seven DMCs in its TSS shores in subfertile cows. Similarly, the KLRA1 gene (Ly49), analogous to KIRs in humans and primarily expressed on Natural Killer (NK) cells, was highlighted for its potential impact on fertility. Past research underscored that a balance between activating and inhibiting KIR receptors is essential for embryo implantation and proper placental development. Moreover, interleukin genes, such as IL-6, IL15, IL22, IL-36G, which are vital f…
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💡 该来源还有 140 条内容,详见 文末

🧪 博客更新 (2条)

详细内容(全部2条)

1. 你的皮肤本身具有抗癌机制,而阳光会将其关闭。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer
  • 📝 描述:Scientists have uncovered how too much sunlight can flip a hidden switch inside skin cells that makes inflammation spiral out of control and increases the risk of cancer. Their research reveals that UV radiation breaks down a protective protein called YTHDF2, which normally prevents a small RNA signal from activating an immune sensor linked to dangerous inflammation. Once that protection is lost, a surprising chain reaction unfolds inside the cell, turning ordinary sun damage into a potential cancer trigger.
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2. Fructose may quietly supercharge your inflammation

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:inflammation
  • 📝 描述:Researchers found that fructose can prime immune cells to overreact to bacterial toxins. In healthy adults, fructose-sweetened drinks increased receptors that trigger inflammation. This heightened sensitivity may contribute to greater infection risk. The effects could be even more dangerous in people with metabolic diseases.
  • 🔗 查看原文

📊 关键词统计

关键词出现次数
RNA-seq26
cancer22
tumor11
transcriptome10
scRNA9
sequencing9
ChIP-seq8
metabolism8
pathway8
immune7
ATAC-seq6
T cell6
macrophage6
methylation6
cytokine6
metabolic6
glioma5
inflammation5
immunity5
RNAseq5

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🧬 数据前沿 其他内容 (140条)

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