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Machine learning-derived immunosenescence index for predicting outcome and drug sensitivity in patients with skin cutaneous melanoma 用于预测皮肤黑色素瘤患者预后和药物敏感性的机器学习衍生免疫衰老指数
IF 5 3区 医学 Q1 Medicine Pub Date : 2024-05-29 DOI: 10.1038/s41435-024-00278-3
Linyu Zhu, Lvya Zhang, Junhua Qi, Zhiyu Ye, Gang Nie, Shaolong Leng
The functions of immunosenescence are closely related to skin cutaneous melanoma (SKCM). The aim of this study is to uncover the characteristics of immunosenescence index (ISI) to identify novel biomarkers and potential targets for treatment. Firstly, integrated bioinformatics analysis was carried out to identify risk prognostic genes, and their expression and prognostic value were evaluated. Then, we used the computational algorithm to estimate ISI. Finally, the distribution characteristics and clinical significance of ISI in SKCM by using multi-omics analysis. Patients with a lower ISI had a favorable survival rate, lower chromosomal instability, lower somatic copy-number alterations, lower somatic mutations, higher immune infiltration, and sensitive to immunotherapy. The ISI exhibited robust, which was validated in multiple datasets. Besides, the ISI is more effective than other published signatures in predicting survival outcomes for patients with SKCM. Single-cell analysis revealed higher ISI was specifically expressed in monocytes, and correlates with the differentiation fate of monocytes in SKCM. Besides, individuals exhibiting elevated ISI levels could potentially receive advantages from chemotherapy, and promising compounds with the potential to target high ISI were recognized. The ISI model is a valuable tool in categorizing SKCM patients based on their prognosis, gene mutation signatures, and response to immunotherapy.
免疫衰老的功能与皮肤黑色素瘤(SKCM)密切相关。本研究旨在揭示免疫衰老指数(ISI)的特征,以确定新的生物标志物和潜在的治疗靶点。首先,我们进行了综合生物信息学分析,以确定风险预后基因,并评估其表达和预后价值。然后,我们使用计算算法估算了ISI。最后,通过多组学分析研究了ISI在SKCM中的分布特征和临床意义。ISI越低的患者生存率越高,染色体不稳定性越低,体细胞拷贝数改变越低,体细胞突变越低,免疫浸润越高,对免疫治疗越敏感。ISI表现出稳健性,这在多个数据集中得到了验证。此外,ISI在预测SKCM患者的生存结果方面比其他已发表的特征更有效。单细胞分析显示,ISI在单核细胞中特异性表达较高,并与SKCM中单核细胞的分化命运相关。此外,表现出 ISI 水平升高的个体有可能从化疗中获益,而有潜力靶向高 ISI 的化合物也得到了认可。ISI 模型是根据预后、基因突变特征和对免疫疗法的反应对 SKCM 患者进行分类的重要工具。
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引用次数: 0
Integrated analyses reveal the diagnostic and predictive values of COL5A2 and association with immune environment in Crohn’s disease 综合分析揭示了 COL5A2 的诊断和预测价值以及与克罗恩病免疫环境的关联。
IF 5 3区 医学 Q1 Medicine Pub Date : 2024-05-24 DOI: 10.1038/s41435-024-00276-5
Tingting Zhong, Xiaoqing Cheng, Qianru Gu, Guoxiang Fu, Yihong Wang, Yujie Jiang, Jiaqi Xu, Zhinong Jiang
The pathogenesis of Crohn’s disease (CD) involves abnormal immune cell infiltration and dysregulated immune response. Therefore, thorough research on immune cell abnormalities in CD is crucial for improved treatment of this disease. Single-cell RNA sequencing (scRNA-seq) and bulk RNA-seq data of CD were obtained from the Gene Expression Omnibus (GEO) database. Cell-type identification by estimating relative subsets of RNA transcripts (CIBERSORT), weighted gene co-expression network analysis (WGCNA), protein–protein interaction (PPI) networks evaluated the proportion of immune infiltrating cells, constructed co-expression network and identified key genes, respectively. Based on the dataset (GSE134809), 15 cell clusters were defined and labeled as different cell types. Among the 11 modules, the yellow module had the closest relationship with plasma cells (cluster 5). Confirmed using RNA sequencing and IHC assay, the expression of COL5A2 in CD samples was higher than that in control samples. Furthermore, the COL5A2 protein expression remarkably decreased in the group of patients who responded to anti–tumor necrosis factor (TNF) treatments, compared to the non-response group. The comprehensive analyses described here provided novel insight into the landscape of CD-associated immune environment. In addition, COL5A2 were identified as potential diagnostic indicators for CD, as well as promising predictive markers for CD patients.
克罗恩病(CD)的发病机制包括免疫细胞异常浸润和免疫反应失调。因此,深入研究克罗恩病的免疫细胞异常对改善该病的治疗至关重要。单细胞RNA测序(scRNA-seq)和大量RNA-seq数据来自基因表达总库(GEO)数据库。通过估算RNA转录本的相对子集(CIBERSORT)进行细胞类型鉴定,加权基因共表达网络分析(WGCNA)和蛋白-蛋白相互作用(PPI)网络分别评估了免疫浸润细胞的比例,构建了共表达网络并鉴定了关键基因。根据数据集(GSE134809),定义了15个细胞群,并标记为不同的细胞类型。在 11 个模块中,黄色模块与浆细胞的关系最为密切(第 5 群)。通过 RNA 测序和 IHC 检测证实,CD 样本中 COL5A2 的表达高于对照样本。此外,与无应答组相比,抗肿瘤坏死因子(TNF)治疗应答组患者的 COL5A2 蛋白表达明显下降。本文所述的综合分析为了解 CD 相关免疫环境提供了新的视角。此外,COL5A2还被确定为CD的潜在诊断指标,以及CD患者有希望的预测标志物。
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引用次数: 0
TIMP-1 is an activator of MHC-I expression in myeloid dendritic cells with implications for tumor immunogenicity TIMP-1 是骨髓树突状细胞中 MHC-I 表达的激活剂,对肿瘤免疫原性有影响。
IF 5 3区 医学 Q1 Medicine Pub Date : 2024-05-22 DOI: 10.1038/s41435-024-00274-7
Miriam Langguth, Eleftheria Maranou, Saara A. Koskela, Oskar Elenius, Roosa E. Kallionpää, Eva-Maria Birkman, Otto I. Pulkkinen, Maria Sundvall, Marko Salmi, Carlos R. Figueiredo
Immune checkpoint therapies (ICT) for advanced solid tumors mark a new milestone in cancer therapy. Yet their efficacy is often limited by poor immunogenicity, attributed to inadequate priming and generation of antitumor T cells by dendritic cells (DCs). Identifying biomarkers to enhance DC functions in such tumors is thus crucial. Tissue Inhibitor of Metalloproteinases-1 (TIMP-1), recognized for its influence on immune cells, has an underexplored relationship with DCs. Our research reveals a correlation between high TIMP1 levels in metastatic melanoma and increased CD8 + T cell infiltration and survival. Network studies indicate a functional connection with HLA genes. Spatial transcriptomic analysis of a national melanoma cohort revealed that TIMP1 expression in immune compartments associates with an HLA-A/MHC-I peptide loading signature in lymph nodes. Primary human and bone-marrow-derived DCs secrete TIMP-1, which notably increases MHC-I expression in classical type 1 dendritic cells (cDC1), especially under melanoma antigen exposure. TIMP-1 affects the immunoproteasome/TAP complex, as seen by upregulated PSMB8 and TAP-1 levels of myeloid DCs. This study uncovers the role of TIMP-1 in DC-mediated immunogenicity with insights into CD8 + T cell activation, providing a foundation for mechanistic exploration and highlighting its potential as a new target for combinatorial immunotherapy to enhance ICT effectiveness.
治疗晚期实体瘤的免疫检查点疗法(ICT)标志着癌症治疗的一个新里程碑。然而,由于树突状细胞(DC)对抗肿瘤 T 细胞的启动和生成不足,它们的疗效往往受到免疫原性差的限制。因此,确定生物标志物以增强树突状细胞在此类肿瘤中的功能至关重要。组织金属蛋白酶抑制剂-1(TIMP-1)因其对免疫细胞的影响而被公认,但它与直流电细胞的关系却未得到充分探索。我们的研究揭示了转移性黑色素瘤中高 TIMP1 水平与 CD8 + T 细胞浸润和存活率增加之间的相关性。网络研究表明了与 HLA 基因的功能性联系。对全国黑色素瘤队列进行的空间转录组学分析表明,TIMP1在免疫分区中的表达与淋巴结中的HLA-A/MHC-I肽负载特征有关。原代人类和骨髓源性 DCs 会分泌 TIMP-1,它能显著增加经典 1 型树突状细胞(cDC1)的 MHC-I 表达,尤其是在黑色素瘤抗原暴露的情况下。TIMP-1会影响免疫保护体/TAP复合体,这一点从髓源性DC的PSMB8和TAP-1水平上调可以看出。这项研究揭示了TIMP-1在DC介导的免疫原性中的作用,并深入了解了CD8 + T细胞的活化,为机理探索奠定了基础,并凸显了其作为组合免疫疗法新靶点的潜力,以提高ICT的有效性。
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引用次数: 0
HER2-targeting CAR-T cells show highly efficient anti-tumor activity against glioblastoma both in vitro and in vivo HER2靶向CAR-T细胞在体外和体内对胶质母细胞瘤都显示出高效的抗肿瘤活性。
IF 5 3区 医学 Q1 Medicine Pub Date : 2024-05-03 DOI: 10.1038/s41435-024-00275-6
Xueying Li, Lifen Zhao, Wenzhe Li, Peng Gao, Nianzhu Zhang
Glioblastoma (GBM) is the most common and aggressive malignant primary brain tumor in adults. Current treatment options for GBM include surgical resection, radiation, and chemotherapy, which predominantly slow cancer growth and reduce symptoms, resulting in a 5-year survival rate of no more than 10%. Chimeric antigen receptor (CAR) T-cell therapy is a new class of cellular immunotherapy that has made great progress in treating malignant tumors. Human epidermal growth factor receptor 2 (HER2) is overexpressed in GBM and may provide a potential therapeutic target for GBM treatment. In this study, we constructed third-generation CAR-T cells targeting the HER2 antigen in GBM. HER2-CAR-T cells showed effective anti-tumor activity both in vitro and in vivo. Furthermore, HER2-specific CAR-T cells exhibited strong cytotoxicity and cytokine-secreting abilities against GBM cells in vitro. Anti-HER2 CAR-T cells also exhibited increased cytotoxicity with increasing effector-to-target ratios. Anti-HER2 CAR-T cells delivered via peritumoral injection successfully stunted tumor progression in vivo. Moreover, peritumoral intravenous administration of anti-HER2 CAR-T cells resulted in therapeutic improvement against GBM cells compared with intravenous administration. In conclusion, our study shows that HER2 CAR-T cells represent an emerging immunotherapy for treating GBM.
胶质母细胞瘤(GBM)是成人中最常见的侵袭性恶性原发性脑肿瘤。目前治疗 GBM 的方法包括手术切除、放疗和化疗,主要是减缓癌症生长和减轻症状,5 年生存率不超过 10%。嵌合抗原受体(CAR)T 细胞疗法是一种新型细胞免疫疗法,在治疗恶性肿瘤方面取得了重大进展。人表皮生长因子受体2(HER2)在GBM中过度表达,可能为GBM治疗提供潜在的治疗靶点。在这项研究中,我们构建了第三代靶向GBM中HER2抗原的CAR-T细胞。HER2-CAR-T细胞在体外和体内均显示出有效的抗肿瘤活性。此外,HER2特异性CAR-T细胞在体外对GBM细胞具有很强的细胞毒性和细胞因子分泌能力。抗HER2 CAR-T细胞的细胞毒性也随着效应物与靶标比率的增加而增强。通过瘤周注射的抗HER2 CAR-T细胞成功阻止了肿瘤在体内的发展。此外,与静脉注射相比,瘤周静脉注射抗 HER2 CAR-T 细胞可改善对 GBM 细胞的治疗效果。总之,我们的研究表明,HER2 CAR-T细胞是治疗GBM的一种新兴免疫疗法。
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引用次数: 0
Oxidized phospholipids during microbial challenge: friend or foe? 微生物挑战过程中的氧化磷脂:敌还是友?
IF 5 3区 医学 Q1 Medicine Pub Date : 2024-04-22 DOI: 10.1038/s41435-024-00273-8
Henrique G. Colaço, Kelsey Voss
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引用次数: 0
MDSC expansion during HIV infection: regulators, ART and immune reconstitution 艾滋病毒感染期间 MDSC 的扩增:调节器、抗逆转录病毒疗法和免疫重建
IF 5 3区 医学 Q1 Medicine Pub Date : 2024-04-11 DOI: 10.1038/s41435-024-00272-9
Mahmoud Mohammad Yaseen, Nizar Mohammad Abuharfeil, Homa Darmani
Myeloid-derived suppressor cells (MDSCs) become expanded in different pathological conditions including human immunodeficiency virus (HIV) infection and this may worsen the disease status and accelerate disease progression. In HIV infection, MDSCs suppress anti-HIV immune responses and hamper immune reconstitution. Understanding the factors and mechanisms of MDSC expansion during HIV infection is central to understanding the pathophysiology of HIV infection. This may pave the way to developing new therapeutic targets or strategies. In this work we addressed (i) the mechanisms that regulate MDSC expansion, (ii) the impact of antiretroviral therapy (ART) on the frequency of MDSCs during HIV infection; (iii) the impact of MDSCs on immune reconstitution during successful ART; and (iv) the potential of MDSCs as a therapeutic target.
在包括人类免疫缺陷病毒(HIV)感染在内的不同病理情况下,髓源性抑制细胞(MDSCs)会发生扩增,这可能会恶化疾病状况并加速疾病进展。在 HIV 感染中,MDSCs 会抑制抗 HIV 免疫反应,阻碍免疫重建。了解 HIV 感染期间 MDSC 扩增的因素和机制对于理解 HIV 感染的病理生理学至关重要。这可能为开发新的治疗靶点或策略铺平道路。在这项工作中,我们探讨了(i)调节 MDSC 扩增的机制;(ii)抗逆转录病毒疗法(ART)对 HIV 感染期间 MDSCs 频率的影响;(iii)成功抗逆转录病毒疗法期间 MDSCs 对免疫重建的影响;以及(iv)MDSCs 作为治疗靶点的潜力。
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引用次数: 0
Correction: Same name, different game?—How ontogeny shapes classical monocyte phenotypes 更正:同样的名字,不同的游戏?--本体如何塑造经典的单核细胞表型。
IF 5 3区 医学 Q1 Medicine Pub Date : 2024-04-09 DOI: 10.1038/s41435-024-00269-4
Lisabeth Pimenov, Azuah Lucrecia Gonzalez, Amanda C. Doran, Sylvia Knapp
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引用次数: 0
Transcriptomic meta-analysis characterizes molecular commonalities between psoriasis and obesity 转录组元分析描述了银屑病与肥胖之间的分子共性。
IF 5 3区 医学 Q1 Medicine Pub Date : 2024-04-05 DOI: 10.1038/s41435-024-00271-w
Charalabos Antonatos, Georgios K. Georgakilas, Evangelos Evangelou, Yiannis Vasilopoulos
Despite the abundance of epidemiological evidence for the high comorbid rate between psoriasis and obesity, systematic approaches to common inflammatory mechanisms have not been adequately explored. We performed a meta-analysis of publicly available RNA-sequencing datasets to unveil putative mechanisms that are postulated to exacerbate both diseases, utilizing both late-stage, disease-specific meta-analyses and consensus gene co-expression network (cWGCNA). Single-gene meta-analyses reported several common inflammatory mechanisms fostered by the perturbed expression profile of inflammatory cells. Assessment of gene overlaps between both diseases revealed significant overlaps between up- (n = 170, P value = 6.07 × 10−65) and down-regulated (n = 49, P value = 7.1 × 10−7) genes, associated with increased T cell response and activated transcription factors. Our cWGCNA approach disentangled 48 consensus modules, associated with either the differentiation of leukocytes or metabolic pathways with similar correlation signals in both diseases. Notably, all our analyses confirmed the association of the perturbed T helper (Th)17 differentiation pathway in both diseases. Our novel findings through whole transcriptomic analyses characterize the inflammatory commonalities between psoriasis and obesity implying the assessment of several expression profiles that could serve as putative comorbid disease progression biomarkers and therapeutic interventions.
尽管有大量流行病学证据表明银屑病和肥胖症之间的合并率很高,但对共同炎症机制的系统性方法还没有进行充分的探讨。我们对可公开获得的 RNA 测序数据集进行了荟萃分析,利用晚期疾病特异性荟萃分析和共识基因共表达网络(cWGCNA),揭示了推测会加剧这两种疾病的潜在机制。单基因荟萃分析结果表明,炎症细胞表达谱的紊乱促进了几种常见的炎症机制。对这两种疾病之间基因重叠的评估显示,上调(n = 170,P 值 = 6.07 × 10-65)和下调(n = 49,P 值 = 7.1 × 10-7)基因之间存在显著重叠,这与 T 细胞反应和活化转录因子的增加有关。我们的 cWGCNA 方法分离出 48 个共识模块,这些模块与两种疾病中具有相似相关信号的白细胞分化或代谢途径有关。值得注意的是,我们的所有分析都证实了这两种疾病都与T辅助细胞(Th)17分化途径紊乱有关。我们通过全转录组分析得出的新发现描述了银屑病和肥胖之间的炎症共性,这意味着我们可以评估一些表达谱,这些表达谱可作为潜在的合并疾病进展生物标志物和治疗干预措施。
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引用次数: 0
Comparative single-cell transcriptomic profile of hybrid immunity induced by adenovirus vector-based COVID-19 vaccines 基于腺病毒载体的 COVID-19 疫苗诱导的混合免疫的单细胞转录组比较图谱
IF 5 3区 医学 Q1 Medicine Pub Date : 2024-04-03 DOI: 10.1038/s41435-024-00270-x
Melissa García-Vega, Hui Wan, Mónica Reséndiz-Sandoval, Diana Hinojosa-Trujillo, Olivia Valenzuela, Verónica Mata-Haro, Freddy Dehesa-Canseco, Mario Solís-Hernández, Harold Marcotte, Qiang Pan-Hammarström, Jesús Hernández
In this study, antibody response and a single-cell RNA-seq analysis were conducted on peripheral blood mononuclear cells from five different groups: naïve subjects vaccinated with AZD1222 (AZ) or Ad5-nCoV (Cso), individuals previously infected and later vaccinated (hybrid) with AZD1222 (AZ-hb) or Ad5-nCoV (Cso-hb), and those who were infected and had recovered from COVID-19 (Inf). The results showed that AZ induced more robust neutralizing antibody responses than Cso. The single-cell RNA data revealed a high frequency of memory B cells in the Cso and Cso-hb. In contrast, AZ and AZ-hb groups exhibited the highest proportion of activated naïve B cells expressing CXCR4. Transcriptomic analysis of CD4+ and CD8+ T cells demonstrated a heterogeneous response following vaccination, hybrid immunity, or natural infection. However, a single dose of Ad5-nCoV was sufficient to strongly activate CD4+ T cells (naïve and memory) expressing ANX1 and FOS, similar to the hybrid response observed with AZ. An interesting finding was the robust activation of a subset of CD8+ T cells expressing GZMB, GZMH, and IFNG genes in the Cso-hb group. Our findings suggest that both vaccines effectively stimulated the cellular immune response; however, the Ad5-nCoV induced a more robust CD8+ T-cell response in previously infected individuals.
本研究对五组不同人群的外周血单核细胞进行了抗体反应和单细胞RNA-seq分析,这五组人群分别是:接种AZD1222(AZ)或Ad5-nCoV(Cso)疫苗的天真受试者、曾感染AZD1222(AZ-hb)或Ad5-nCoV(Cso-hb)并随后接种(混合)疫苗的受试者,以及曾感染COVID-19并已康复的受试者(Inf)。结果显示,AZ诱导的中和抗体反应比Cso更强。单细胞 RNA 数据显示,Cso 和 Cso-hb 中记忆 B 细胞的频率很高。相比之下,AZ和AZ-hb组中表达CXCR4的活化幼稚B细胞比例最高。对 CD4+ 和 CD8+ T 细胞的转录组分析表明,接种疫苗、混合免疫或自然感染后会产生不同的反应。然而,单剂量的Ad5-nCoV足以强烈激活表达ANX1和FOS的CD4+ T细胞(幼稚和记忆),这与AZ观察到的混合反应类似。一个有趣的发现是,Cso-hb 组中表达 GZMB、GZMH 和 IFNG 基因的 CD8+ T 细胞亚群被强力激活。我们的研究结果表明,两种疫苗都能有效刺激细胞免疫反应;但是,Ad5-nCoV能在先前感染的个体中诱导出更强的CD8+ T细胞反应。
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引用次数: 0
Correction: An immunogenomic exome landscape of triple positive primary antiphospholipid patients 更正:三阳性原发性抗磷脂患者的免疫基因组外显子图谱。
IF 5 3区 医学 Q1 Medicine Pub Date : 2024-03-19 DOI: 10.1038/s41435-024-00261-y
A. Guffroy, L. Jacquel, Y. Seeleuthner, N. Paul, V. Poindron, F. Maurier, V. Delannoy, A. C. Voegeli, P. Zhang, B. Nespola, A. Molitor, M. J. Apithy, P. Soulas-Sprauel, T. Martin, R. E. Voll, S. Bahram, V. Gies, J. L. Casanova, A. Cobat, B. Boisson, R. Carapito, A. S. Korganow
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引用次数: 0
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Genes and immunity
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