科研日报 2026-05-14

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📅 Daily Report - 2026-05-14

今日筛选出 50 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: Fc优化的GITR抗体显著增强CD4 T细胞-树突状细胞的串扰,推动抗肿瘤免疫;研究揭示了 NSD1 通过 H3K36me2 介导的 DNA 甲基化调控人 iPSC 分化。

主要方向

  • 肿瘤免疫与治疗:探索抗体疗法(如Fc优化GITR抗体)在增强抗肿瘤免疫中的作用;研究肠道微生物-代谢物轴对肝癌进展的影响;评估逆转乳酸介导的免疫抑制对癌症免疫疗法的协同效应。
  • 表观遗传调控与细胞分化:阐明 NSD1 在 iPSC 分化中的表观遗传调控机制;研究 H3K27me3 在神经元基因表达调控中的作用;探究 H2B.8 在种子萌发过程中的染色质重塑。
  • 疾病机制与模型构建:解析慢性淋巴细胞白血病的遗传和表观遗传特征;构建淋巴结纤维化小鼠模型;研究 PFAS 对巨噬细胞功能及肝脏脂质代谢的影响。

技术亮点

  • 多组学整合分析:结合 RNA-seq、ChIP-seq、ATAC-seq、Hi-C 等技术,深入解析基因组、转录组及表观遗传调控。
  • 新型动物模型构建:通过双重TGF-β1 途径建立可靠的淋巴结纤维化小鼠模型。

🧪 博客更新

今日焦点: 科学家实现对衰老血细胞的“年轻化”逆转,并发现新型靶向药物有望清除与癌症及衰老相关的“僵尸细胞”。

主要方向

  • 靶向清除衰老细胞(Senescent Cells)以对抗癌症和衰老。
  • 逆转衰老血干细胞功能,恢复造血与免疫再生能力。
  • 解析植物抗癌化合物的生物合成途径。
  • 精准绘制细菌转录图谱,揭示RNA聚合酶调控机制。

技术亮点

  • 开发RNAP-seq技术,实现单核苷酸精度的细菌转录测序。
  • 发现并调控关键酶,实现衰老血干细胞的年轻化。

📚 分类浏览

🧬 数据前沿 (46条)

详细内容(前10条)

1.GSE326061 Fc 优化的 GITR 抗体增强 CD4 T 细胞与树突状细胞的相互作用,从而促进抗肿瘤免疫 [Lib1]

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、immunity、T cell、dendritic cell、antibody
  • 📝 描述:Contributors : Yahel Avraham ; Natasha Barth ; Tzlil Yair Bar-on ; Barak Toval ; Aviya Habshush Menachem ; Jasmine Blanga ; Ella Herzog ; Hagar Rotem ; Yuval Shapir Itai ; Tali Feferman ; Moshe Biton ; Rony DahanSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusTargeting the stimulatory immune checkpoint glucocorticoid-induced TNFR-related protein (GITR) using agonistic monoclonal antibodies (mAbs) is a promising strategy for cancer immunotherapy that involves increased effector T cell activity and regulatory T cell (Treg) elimination. The pre-clinical anti-tumor activity of GITR mAbs depends on activating Fcγ receptors (FcγRs). However, the role of human Fc-FcγR interactions in the activity of GITR mAbs has not been comprehensively addressed. To this end, we employed Fc protein and glycan engineering to modify the FcγR interactions of anti-GITR human mAbs and characterized them in humanized FcγR mice. We identified an Fc-optimized human IgG scaffold that increased binding to activating FcγRIIa and FcγRIIIa, enhancing anti-tumor efficacy. This Fc-optimized activity was mediated by multiple mechanisms that are unique to GITR mAb, including FcγR-mediated Treg depletion and mutual engagement and activation of CD4+ T cells and dendritic cells, leading to anti-tumor cytotoxic activity of CD4+ T cells and enhanced CD8+ T cell activity. Our findings suggest a strategy to optimize human GITR mAbs, harnessing beneficial immune pathways to improve their therapeutic potential.
  • 🔗 查看原文

2.GSE325953 Fc 优化的 GITR 抗体增强 CD4 T 细胞与树突状细胞的相互作用,从而促进抗肿瘤免疫

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:tumor、immunity、T cell、dendritic cell、antibody
  • 📝 描述:Contributors : Yahel Avraham ; Natasha Barth ; Tzlil Yair Bar-on ; Barak Toval ; Aviya Habshush Menachem ; Jasmine Blanga ; Ella Herzog ; Hagar Rotem ; Yuval Shapir Itai ; Tali Feferman ; Moshe Biton ; Rony DahanSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusTargeting the stimulatory immune checkpoint glucocorticoid-induced TNFR-related protein (GITR) using agonistic monoclonal antibodies (mAbs) is a promising strategy for cancer immunotherapy that involves increased effector T cell activity and regulatory T cell (Treg) elimination. The pre-clinical anti-tumor activity of GITR mAbs depends on activating Fcγ receptors (FcγRs). However, the role of human Fc-FcγR interactions in the activity of GITR mAbs has not been comprehensively addressed. To this end, we employed Fc protein and glycan engineering to modify the FcγR interactions of anti-GITR human mAbs and characterized them in humanized FcγR mice. We identified an Fc-optimized human IgG scaffold that increased binding to activating FcγRIIa and FcγRIIIa, enhancing anti-tumor efficacy. This Fc-optimized activity was mediated by multiple mechanisms that are unique to GITR mAb, including FcγR-mediated Treg depletion and mutual engagement and activation of CD4+ T cells and dendritic cells, leading to anti-tumor cytotoxic activity of CD4+ T cells and enhanced CD8+ T cell activity. Our findings suggest a strategy to optimize human GITR mAbs, harnessing beneficial immune pathways to improve their therapeutic potential.
  • 🔗 查看原文

3.GSE330363 应激通过肠道微生物-代谢物轴加速肝细胞癌进展

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:carcinoma、regex:micro(b|be|bial|organism)、gut、regex:gut(-?microbiome)?
  • 📝 描述:Contributors : Zhe Hu ; Pengfei Yue ; Minlan Yuan ; Zhenjie Zhang ; Biao Yang ; Zhongwei CaoSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusHepatocellular carcinoma is one of the most prevalent malignancies worldwide, and the role of stress in hepatocellular carcinoma progression remains incompletely understood. In this study, we integrated clinical and preclinical models to investigate how stress-associated gut microbiota remodeling contributes to hepatocellular carcinoma progression. Stress profoundly altered the gut microbiota, with Phocaeicola vulgatus significantly reduced. Restoration of Phocaeicola vulgatus or administration of its tryptophan-derived metabolite indole-3-propionic acid attenuated hepatocellular carcinoma progression in vivo. Single-cell RNA sequencing was performed to characterize changes in the hepatocellular carcinoma tumor microenvironment. Indole-3-propionic acid treatment reduced endothelial JAM2 expression and was associated with reduced JAM2-F11R-mediated endothelial-macrophage crosstalk. These findings support a role for the stress-gut microbiota-metabolite-tumor microenvironment axis in hepatocellular carcinoma progression and suggest potential translational targets for microbiome-based therapeutic strategies.
  • 🔗 查看原文

4.GSE330449 重编程细菌能量学逆转乳酸介导的免疫抑制以实现协同癌症免疫疗法

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、regex:bacter(ia|ial|ium)、regex:immuno(logy|therapy|suppression)
  • 📝 描述:Contributors : Jing Zhao ; Nuo Zhang ; Lingfeng Qin ; Wei Wei ; Xiuxiu Wang ; Jingjing Liu ; Jing WangSeries Type : Expression profiling by high throughput sequencingOrganism : Shewanella oneidensis MR-1The immunosuppressive tumor microenvironment (TME), driven by lactate accumulation, critically limits cancer immunotherapy efficacy. Here, we engineered Shewanella oneidensis MR-1 (S. oneidensis) by reprogramming energy metabolism to reverse lactate-driven immunosuppression in the TME. Integration of polyphosphate kinase 2 (PPK2-Ⅰ) and NAD kinase (NADK) markedly augmented bacterial bioenergetics, boosting ATP production by 287.5% and elevating the NADH/NAD⁺ ratio by 299.9% compared to the wild-type strain. This bioenergetic enhancement accelerated targeted lactate depletion and increased intratumoral bacterial persistence, while impairing tumor lactate transport via downregulation of monocarboxylate transporters MCT1 and MCT4. Crucially, metabolic remodeling reversed immunosuppression by enhancing antigen presentation and CD8+ T cell infiltration, and reducing regulatory T cells (Tregs), thereby converting immunologically “cold” tumors into immunoreactive phenotypes. When combined with αPD-1 immunotherapy, this strategy synergistically amplified antitumor efficacy and established durable immunological memory against recurrence. Collectively, our work establishes a paradigm for bacterial bioenergetic engineering to advance cancer immunotherapy.
  • 🔗 查看原文

5. GSE330188 Crnic研究所人类三体计划 - 托法替尼治疗唐氏综合征免疫性皮肤病:全血PolyA RNA测序

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:immune、RNAseq
  • 📝 描述:Contributors : Matthew D Galbraith ; Angela L Rachubinski ; Joaquin M EspinosaSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensAnalysis of steady-state mRNA levels in whole blood of subjects with Down syndrome (trisomy 21) and qualifying moderate-to-severe immune skin conditions. This dataset is part of the Human Trisome Project run by the Linda Crnic Institute for Down Syndrome at University of Colorado Anschutz. http://www.trisome.org/
  • 🔗 查看原文

6. GSE312183 人类正常肝脏和肝细胞癌组织转录组分析,按 EZH2 表达水平分层

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:carcinoma、transcriptome
  • 📝 描述:Contributor : Kyung Hyun YooSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensThis RNA-seq dataset was generated to investigate transcriptomic alteriations associated with hepatocellular carcinoma(HCC) progression and the functional role of EZH2 expression. Liver tissue samples were collected from normal controls, HCC patients with low EZH2 expression, and HCC patients with high EZH2 expression. Differential gene expression analysis confirmed a marked increase in EZH2 expression in HCC relative to normal tissues and revealed transcriptional programs associated with proliferative and metastatic characterisrics that were progressively enhanced according to EZH2 expression level. This dataset enables the exploration of EZH2-associated molecular signatures and their relevance to HCC malignancy and metastatic progression.
  • 🔗 查看原文

7. GSE295456 慢性淋巴细胞白血病伴IGH::BCL3易位的特征是具有同质且独特的遗传和表观遗传图谱

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:leukemia、epigenetic
  • 📝 描述:Contributors : Cosima Drewes ; Reiner SiebertSeries Type : Methylation profiling by genome tiling arrayOrganism : Homo sapiensApproximately 1% of chronic lymphocytic leukemia (CLL) cases harbor a translocation juxtaposing the immunoglobulin heavy chain (IGH) and B-cell lymphoma 3 (BCL3) loci. Aiming at comprehensive molecular characterization of IGH::BCL3-positive B-cell neoplasms we here investigated samples from 84 patients using FISH, whole genome and targeted sequencing and DNA methylation analyses. Junctional sequences obtained in 27 patients showed breakpoints upstream of BCL3 in all CLL cases. IGH breaks were presumably driven by aberrant class-switch recombination in 26/27 cases, frequently involving IGHA (12/26). Notably, 95% (78/82) of patients carried an unmutated IGHV with significant CLL stereotype subset #8 enrichment. Trisomy 12 (61%, 51/83) and mutations affecting NOTCH1 (32%, 25/79), BRAF (14%, 11/79) and FBXW7 (14%, 11/79) were frequent aberrations. DNA methylation analysis assigned 77% (51/66) of patients with IGH::BCL3-translocation with at least 60% tumor cell content to the naive B-cell-like group but unraveled a distinct and during follow-up stable signature resembling in part plasma cell-like epigenetic features. A binary DNA methylation classifier using 20 CpGs could distinguish IGH::BCL3-translocated CLL samples from other CLL subtypes. In an efficacy cohort of 3832 previously untreated patients from GCLLSG trials, IGH::BCL3 was associated with shorter progression-free survival (PFS) and overall survival (OS) in 28 patients when treated with chemoimmunotherapy, but not in those receiving venetoclax. Our findings highlight the genetic and epigenetic homogeneity of IGH::BCL3-translocated CLL samples and their differences from other types of CLL suggesting IGH::BCL3 leukemic B-cell neoplasms to be a biological distinct subtype of CLL.
  • 🔗 查看原文

8. GSE330702 RNA-seq 分析 TGF-β2 刺激下人真皮淋巴内皮细胞中 Nogo-B 敲低的影响

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:regex:lymph(o|atic)?、RNA-seq
  • 📝 描述:Contributors : Dan Shan ; Yifeng Zhang ; Jun YuSeries Type : Expression profiling by high throughput sequencingOrganism : Homo sapiensNogo-B (RTN4B), an endoplasmic reticulum-associated protein, plays a critical role in regulating endothelial cell function and vascular remodeling. However, its role in lymphatic endothelial cells (LECs) and in response to profibrotic signaling remains poorly understood. Transforming growth factor-β2 (TGF-β2) is a key regulator of endothelial phenotypes and has been implicated in lymphatic dysfunction under pathological conditions. In this study, we performed RNA sequencing (RNA-seq) to investigate the transcriptional changes associated with Nogo-B knockdown in human dermal lymphatic endothelial cells (HDLECs) under TGF-β2 stimulation. HDLECs were transduced with shRNA targeting Nogo-B (shNogo-B) or control shRNA (shGFP), followed by treatment with TGF-β2 for 72 hours. Total RNA was extracted and subjected to high-throughput sequencing. Comparative transcriptomic analysis was conducted to identify differentially expressed genes and pathways regulated by Nogo-B under TGF-β2-stimulated conditions. This dataset provides insights into the molecular mechanisms by which Nogo-B modulates lymphatic endothelial cell responses to TGF-β signaling, including pathways related to extracellular matrix organization, cell migration, proliferation, and cytoskeletal remodeling. These data serve as a resource for understanding the role of Nogo-B in lymphatic endothelial biology and its contribution to TGF-β-mediated signaling and dysfunction.
  • 🔗 查看原文

9. GSE330527 蛹翼蝠唾液腺全长转录组测序

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:sequencing、transcriptome
  • 📝 描述:Contributors : Chun He ; Jiamin ShiSeries Type : Expression profiling by high throughput sequencingOrganism : Pteromalus puparumAnimal saliva provides an excellent model for studying adaptive evolution, yet the functional significance of alternative mRNA isoforms in parasitoid salivary systems remains poorly understood. Here, using integrative full-length transcript sequencing and expression profiling, we generated an isoform-resolved transcriptomic landscape of salivary genes in the endoparasitoid wasp Pteromalus puparum. We identified 133 high-confidence salivary genes, more than 75% of which produced multiple transcript isoforms. Proteomic analyses confirmed that alternative splicing directly contributes to salivary protein diversity, with eight genes encoding distinct protein isoforms. Twelve salivary genes exhibited gland-biased isoform usage, including PpSerpin3, whose short isoform was specifically expressed in salivary and venom glands and suppressed host melanization. Comparative multi-omics analyses further revealed that salivary and venom systems share a conserved genetic core but achieve functional specialization through tissue-specific gene family co-option and extensive isoform switching. Together, these findings establish an isoform-resolved framework for the parasitoid salivary system and demonstrate that alternative splicing promotes salivary protein diversification and gland-specific functional evolution.
  • 🔗 查看原文

10. GSE330392 通过双重TGF-β1给药途径建立和表征淋巴结纤维化小鼠模型

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:lymph、regex:lymph(o|atic)?
  • 📝 描述:Series Type : Expression profiling by high throughput sequencingOrganism : Mus musculusThis study establishes two reliable TGF-β1–induced lymph node fibrosis models that recapitulate ECM remodeling and immune suppression, providing a platform to investigate how fibrotic changes disrupt local immune regulation.
  • 🔗 查看原文

💡 该来源还有 36 条内容,详见 文末

🧪 博客更新 (4条)

详细内容(全部4条)

1. 新药有望清除与癌症和衰老相关的“僵尸细胞”。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer、aging
  • 📝 描述:Researchers found a new way to kill harmful “zombie” cells that linger after chemotherapy and help cancers become more aggressive. These senescent cells survive by relying on a protective protein called GPX4, even while sitting on the edge of a deadly iron-triggered collapse. New drugs remove that protection, causing the cells to self-destruct. In mice, the approach reduced tumor size and boosted survival, hinting at a promising new cancer therapy.
  • 🔗 查看原文

2. 利用RNAP-seq绘制细菌转录图谱

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:regex:bacter(ia|ial|ium)
  • 📝 描述:RNA sequencing method RNAP-seq maps bacterial transcription with single-nucleotide precision, revealing lineage-specific RNA polymerase pausing and regulatory factor…
  • 🔗 查看原文

3. 一种罕见的抗癌植物化合物已被破译

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:cancer
  • 📝 描述:Scientists at UBC Okanagan have uncovered how plants produce mitraphylline, a rare natural compound with promising anti cancer potential. The team identified two enzymes that work together to build the molecule’s unusual twisted structure, solving a mystery that had puzzled researchers for years. Because mitraphylline appears only in tiny amounts in tropical plants like kratom and cat’s claw, the discovery could make it far easier to produce sustainably in the future.
  • 🔗 查看原文

4. 科学家在抗衰老领域取得重大突破,使衰老的血液干细胞重返青春。

  • ✍️ 作者:未知作者
  • 🏷️ 关键词:aging
  • 📝 描述:As blood stem cells age, their lysosomes become overactive and damaged, triggering inflammation and weakening the body’s ability to regenerate healthy blood and immune cells. By calming this cellular “overdrive,” researchers restored the stem cells’ youthful function, dramatically boosting their ability to regenerate and produce balanced blood cells.
  • 🔗 查看原文

📊 关键词统计

关键词出现次数
RNA-seq9
cancer6
RNAseq4
ChIP-seq4
tumor3
T cell3
immune3
cardiac3
transcriptome3
methylation3
regex:bacter(iaial
immunity2
dendritic cell2
antibody2
carcinoma2
macrophage2
regex:lymph(oatic)?
sequencing2
aging2
ATAC-seq1

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🧬 数据前沿 其他内容 (36条)

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