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Preventing the antigen-presenting function of retinal microglia blocks autoimmune neuroinflammation by dendritic cell-primed CD4+ T cells 阻止视网膜小胶质细胞抗原呈递功能阻断树突状细胞引发的CD4+ T细胞的自身免疫性神经炎症
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2025-04-15 DOI: 10.1016/j.jaut.2025.103417
Shintaro Shirahama , Yoko Okunuki , May Y. Lee , Margarete M. Karg , Nasrin Refaian , Drenushe Krasniqi , Kip M. Connor , Meredith S. Gregory-Ksander , Bruce R. Ksander
Autoimmune uveitis is a major cause of blindness and experimental autoimmune uveitis (EAU) is mediated by interphotoreceptor retinoid-binding protein specific effector CD4+ T cells that infiltrate the retina. At least two MHC Class II (MHC II) antigen-presenting cell (APC) events are required for uveitis to develop. The first occurs in the secondary lymphoid organs when dendritic cells (DCs) activate and expand effector CD4+ T cells that enter the circulation and migrate systemically. The second APC event occurs when DC-primed effector CD4+ T cells infiltrate the retina and are restimulated by the relevant autoantigen. Importantly, if this second restimulation does not occur, then uveitis does not develop. However, it is still unclear which cell type(s) function as APCs within the retina. There are two candidate MHC II+ cell types-resident microglia and infiltrating DCs. We used the inducible Cre-lox approach to develop mouse strains in which MHC II was knocked out specifically on microglia using either the P2ry12 or Tmem119 gene to drive recombination. We also used Itgax (CD11c encoding gene) to drive recombination in DCs. Using this approach, we uncovered that the second APC event was mediated by MHC II+ microglia and not infiltrating MHC II+ DCs. Therefore, microglia are an important therapeutic target that can prevent and/or diminish uveitis even in the presence of circulating retinal autoantigen-specific effector CD4+ T cells.
自身免疫性葡萄膜炎是失明的主要原因,实验性自身免疫性葡萄膜炎(EAU)是由浸润视网膜的光感受器间类视黄酮结合蛋白特异性效应CD4+ T细胞介导的。葡萄膜炎的发展需要至少两个MHC II类(MHC II)抗原呈递细胞(APC)事件。第一种发生在次级淋巴器官,当树突状细胞(dc)激活并扩增进入循环并全身迁移的效应CD4+ T细胞时。当dc引发的效应CD4+ T细胞浸润视网膜并被相关自身抗原重新刺激时,发生第二次APC事件。重要的是,如果这第二次刺激没有发生,那么葡萄膜炎就不会发生。然而,目前尚不清楚视网膜内哪种类型的细胞起apc的作用。有两种候选的MHC II+细胞类型:驻留小胶质细胞和浸润性dc。我们使用可诱导的Cre-lox方法培养小鼠品系,其中使用P2ry12或Tmem119基因特异性敲除小胶质细胞上的MHC II以驱动重组。我们还使用Itgax (CD11c编码基因)驱动dc中的重组。使用这种方法,我们发现第二次APC事件是由MHC II+小胶质细胞介导的,而不是浸润MHC II+ dc。因此,小胶质细胞是一个重要的治疗靶点,即使在循环视网膜自身抗原特异性效应CD4+ T细胞存在的情况下,也可以预防和/或减轻葡萄膜炎。
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引用次数: 0
Clinical targeted treatment in Sjogren's disease: A systematic literature review for an evidence-based medicine approach Sjogren病的临床靶向治疗:循证医学方法的系统文献综述
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2025-04-08 DOI: 10.1016/j.jaut.2025.103416
Annalisa Marino , Irene Genovali , Luca Navarini , Elena Pontarini , Marta Vomero , Damiano Currado , Andrea Pilato , Letizia Pia Di Corcia , Michele Bombardieri , Roberto Giacomelli , Onorina Berardicurti
Sjögren's disease is a systemic autoimmune disease that primarily affects the exocrine glands, causing the main symptoms of xerostomia and xerophthalmia. In about half of the patients, it also causes systemic symptoms, which can potentially involve any organ or system. To date, the management of these patients is particularly complex due to the lack of recognized and approved therapies for the disease, except for medications used as symptomatic treatment for dryness. Due to the limited evidence available, therapeutic decisions in daily practice are frequently based on a combination of expert opinions and personal experience, which can vary significantly between clinicians. On these bases, we performed as systematic literature review critically analyzing the results of the previous trials, unpacking the single domains of ESSDAI, to evaluate if there are treatments significantly effective in some manifestations of the disease.
Sjögren的疾病是一种系统性自身免疫性疾病,主要影响外分泌腺,引起口干和干眼症的主要症状。在大约一半的患者中,它还会引起全身性症状,可能涉及任何器官或系统。迄今为止,由于缺乏公认和批准的治疗方法,除了用于干燥症状治疗的药物外,这些患者的管理特别复杂。由于可获得的证据有限,日常实践中的治疗决策经常基于专家意见和个人经验的结合,这在临床医生之间可能会有很大差异。在此基础上,我们进行了系统的文献综述,批判性地分析了以前的试验结果,揭示了ESSDAI的单一域,以评估是否存在对该疾病的某些表现显着有效的治疗方法。
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引用次数: 0
Neutrophil extracellular traps induce trophoblasts pyroptosis via enhancing NLRP3 lactylation in SLE pregnancies 中性粒细胞胞外陷阱通过增强NLRP3乳酸化诱导SLE妊娠滋养细胞热亡
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2025-04-03 DOI: 10.1016/j.jaut.2025.103411
Haoyue Hu , You Peng , Chi Chiu Wang , Jun Chen , Xiao Yu , Xiaoyan Chen , Haotong Ouyang , Qin Huang , Jing Ma , Qian Yin , Lien Ma , Ziling Ding , Minyi Zhang , Hao Ren , Jiaman Zheng , Wenqian Chen , Zixin Tao , Ruiyan Liu , Lu Chen , Xuefei Wang , Mei Zhong
Systemic lupus erythematosus (SLE) is a chronic autoimmune disorder primarily affecting women during the reproductive years, often complicating pregnancy outcomes with elevated levels of neutrophil extracellular traps (NETs) infiltration. However, potential impacts of NETs on placental trophoblasts in SLE and the underlying molecular mechanisms remain unclear. To address this, transcriptome sequencing was conducted on placentas collected from seven pregnant women with SLE and six healthy pregnant controls to identify SLE-specific placental features. The effects of NETs were further assessed in MRL/lpr lupus-prone mice and pristane-induced lupus (PIL) mice, focusing on pregnancy outcomes and placental pathology. In vitro, trophoblasts were stimulated with NETs derived from patients with SLE, followed by molecular analyses such as transcriptomic, cellular energy metabolism assays and liquid chromatography-tandem mass spectrometry to explore the effects and mechanisms of NETs. Results showed elevated NETs were observed in the placentas of both patients with SLE and lupus mouse models, accompanied by activation of the NOD-, LRR- and pyrin domain-containing protein 3 (NLRP3) inflammasome. Treatment with DNase I significantly improved pregnancy outcomes in MRL/lpr mice, while the use of peptidyl arginine deiminase 4 (PAD4)-deficient mice was beneficial on the pregnancy outcomes of PIL mice. Furthermore, SLE-derived NETs activated pyroptosis in trophoblasts by promoting glycolysis and subsequent lactylation of NLRP3. These findings highlight that NETs contribute to placental damage in SLE by inducing the lactylation of the NLRP3 inflammasome in trophoblasts, demonstrating the therapeutic potential of inhibiting NETs to improve placental function.
系统性红斑狼疮(SLE)是一种慢性自身免疫性疾病,主要影响育龄期妇女,通常伴有中性粒细胞胞外陷阱(NETs)浸润水平升高,使妊娠结局复杂化。然而,NETs对SLE中胎盘滋养细胞的潜在影响及其潜在的分子机制尚不清楚。为了解决这个问题,研究人员对7名SLE孕妇和6名健康孕妇的胎盘进行了转录组测序,以确定SLE特异性胎盘特征。在MRL/lpr狼疮易感小鼠和前列腺素诱导狼疮(PIL)小鼠中进一步评估NETs的作用,重点关注妊娠结局和胎盘病理。在体外,用SLE患者的NETs刺激滋养细胞,然后通过转录组学、细胞能量代谢测定和液相色谱-串联质谱等分子分析来探索NETs的作用和机制。结果显示,SLE和狼疮小鼠模型的胎盘中均观察到NETs升高,并伴有NOD-、LRR-和pyrin结构域蛋白3 (NLRP3)炎症小体的激活。DNase I治疗可显著改善MRL/lpr小鼠的妊娠结局,而使用肽基精氨酸脱亚胺酶4 (PAD4)缺陷小鼠对PIL小鼠的妊娠结局有益。此外,sled衍生的NETs通过促进NLRP3的糖酵解和随后的乳酸化,激活滋养层细胞的焦亡。这些发现强调,NETs通过诱导滋养细胞NLRP3炎性体的乳酸化而导致SLE的胎盘损伤,证明了抑制NETs改善胎盘功能的治疗潜力。
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引用次数: 0
Integrated stress response inhibition restores hsa-miR-145-5p levels after IFN-β stimulation in salivary gland epithelial cells. Association between cellular stress and miRNA biogenesis in Sjögren's disease 综合应激反应抑制可恢复IFN-β刺激唾液腺上皮细胞后的hsa-miR-145-5p水平。Sjögren病中细胞应激与miRNA生物发生的关系
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2025-04-01 DOI: 10.1016/j.jaut.2025.103412
Isabel Castro , Patricia Carvajal , Sergio Aguilera , María-José Barrera , Soledad Matus , Sergio González , Claudio Molina , María-Julieta González
Labial salivary glands (LSG) from Sjögren's disease (SjD) patients are characterized by increased levels of pro-inflammatory cytokines, such as type I interferons (IFN-I). These LSG also show activation of the integrated stress response (ISR) with overexpression of protein kinase R (PKR), a known IFN-stimulated gene. In vitro, IFN-I stimulation reproduces the downregulation of hsa-miR-145-5p, which is associated with TLR4 overexpression observed in LSG of SjD patients. MicroRNA levels depend on its biogenesis, which is a multi-step process involving several protein complexes. It is not known whether altered miRNA biogenesis is associated with the activation of the ISR induced by IFN-I in LSG from SjD. The aim of this study was to characterize the expression and localization of components of the miRNA biogenesis machinery in LSG of SjD patients, to assess the effect of pro-inflammatory cytokines on these components, and to test whether inhibition of the IFN-β-induced ISR restores the levels of hsa-miR-145-5p. In LSG from 12 SjD patients and 11 non-SjD sicca controls, we determined mRNA fold changes, relative protein levels, and the localization of the ISR and miRNA biogenesis machinery components by RT-qPCR, Western blot, and immunofluorescence, respectively. Pro-inflammatory cytokines, the ISR inhibitor ISRIB, and the PKR inhibitor C16 were used for in vitro assays. In LSG from SjD patients, PKR and its activator PACT colocalized in the cytoplasm, whereas the PKR inhibitor TRBP was observed in the nuclei. IFN-β activates PKR, increases p-eIF2α and ATF4 levels, and increases PACT and AGO2 detection in stress granules. C16 inhibits PKR phosphorylation but increases ATF4 by activating GCN2. ISRIB restores levels of hsa-miR-145-5p and its target TLR4 mRNA upon IFN-β stimulation. These findings suggest an association between inflammation, cellular stress, and miRNA biogenesis, where modulation of the ISR emerges as a potential strategy to restore cellular homeostasis in LSG from SjD patients.
Sjögren病(SjD)患者的唇唾液腺(LSG)的特征是促炎细胞因子水平升高,如I型干扰素(IFN-I)。这些LSG还表现出综合应激反应(ISR)的激活,并过度表达蛋白激酶R (PKR),这是一种已知的ifn刺激基因。在体外,IFN-I刺激可复制hsa-miR-145-5p的下调,这与SjD患者LSG中观察到的TLR4过表达有关。MicroRNA的水平取决于它的生物发生,这是一个涉及多种蛋白质复合物的多步骤过程。目前尚不清楚miRNA生物发生的改变是否与IFN-I在SjD的LSG中诱导的ISR激活有关。本研究的目的是表征SjD患者LSG中miRNA生物发生机制成分的表达和定位,评估促炎细胞因子对这些成分的影响,并测试抑制IFN-β诱导的ISR是否能恢复hsa-miR-145-5p的水平。在12例SjD患者和11例非SjD sicca对照的LSG中,我们分别通过RT-qPCR、Western blot和免疫荧光检测了mRNA折叠变化、相对蛋白水平以及ISR和miRNA生物发生机制成分的定位。促炎细胞因子、ISR抑制剂ISRIB和PKR抑制剂C16用于体外检测。在SjD患者的LSG中,PKR及其激活剂PACT共定位于细胞质中,而PKR抑制剂TRBP则在细胞核中观察到。IFN-β激活PKR,增加应激颗粒中p-eIF2α和ATF4水平,增加PACT和AGO2检测。C16抑制PKR磷酸化,但通过激活GCN2增加ATF4。ISRIB在IFN-β刺激下恢复hsa-miR-145-5p及其靶TLR4 mRNA的水平。这些发现表明炎症、细胞应激和miRNA生物发生之间存在关联,其中ISR的调节成为恢复SjD患者LSG细胞稳态的潜在策略。
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引用次数: 0
Exploring glucagon-like peptide-1 receptor agonists as potential disease-modifying agents in autoimmune diseases 探索胰高血糖素样肽-1受体激动剂作为自身免疫性疾病的潜在疾病调节剂
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2025-04-01 DOI: 10.1016/j.jaut.2025.103414
Yuanyuan Yang , Wencong Liu , Zechang Zhang , Yujia zhang , Xuebin Wang , Jing Wang , Huaifang Cai , Yichan Liu , Ran Meng , Yuqi Fu , Hongmin Luo , Lei Yang , Wenxuan Liu

Background

Glucagon-like peptide-1 receptor (GLP-1R) agonists are emerging with therapeutic agents for the treatment of two of the most prevalent metabolic disorders: diabetes and obesity. However, the causal relationship between GLP-1R agonists and autoimmune diseases is still unclear.

Methods

The available cis-eQTLs for drug target genes (GLP-1Rs) were used as proxies for exposure to GLP-1R agonists. Obesity and type 2 diabetes mellitus (T2DM) were used as positive controls to ensure the reliability of the genetic instrument. Mendelian randomization (MR) was performed to reveal the causal association of genetic proxy GLP-1R agonists with 18 autoimmune diseases from the IEU OpenGwas database and FinnGen database. Finally, the results of the two databases were analyzed via meta-analysis.

Results

A total of 22 significant cis-eQTL single-nucleotide polymorphisms were included as genetic instruments. Positive control analysis revealed that GLP-1R agonists were significantly associated with obesity (OR = 0.826, p = 0.021) and T2DM (OR = 0.886, p < 0.001), which is consistent with the meta-analysis. MR analysis revealed that increased expression of the GLP-1R gene has a significant protective effect on type 1 diabetes mellitus (T1DM), hypothyroidism, primary biliary cholangitis (PBC) and rheumatoid arthritis (RA). However, the MR analysis suggested that increased expression of GLP-1R agonists may increase the risk of Graves' disease (GD), ulcerative colitis (UC) and psoriasis. Our findings were consistent with those of the meta-analysis.

Conclusions

This study provides new insights into potential adjuvant treatments for autoimmune diseases from the perspective of genetic variation and provides evidence for the safety of GLP-1R agonists.
胰高血糖素样肽-1受体(GLP-1R)激动剂正在作为治疗药物出现,用于治疗两种最常见的代谢紊乱:糖尿病和肥胖。然而,GLP-1R激动剂与自身免疫性疾病之间的因果关系尚不清楚。方法利用现有的药物靶基因(GLP-1Rs)顺式等位基因(cis- eqtl)作为GLP-1R激动剂暴露的指标。为确保遗传仪器的可靠性,以肥胖和2型糖尿病(T2DM)为阳性对照。采用孟德尔随机化(MR)来揭示遗传代理GLP-1R激动剂与来自IEU OpenGwas数据库和FinnGen数据库的18种自身免疫性疾病的因果关系。最后,对两个数据库的结果进行meta分析。结果共纳入22个显著的顺式eqtl单核苷酸多态性作为遗传工具。阳性对照分析显示,GLP-1R激动剂与肥胖(OR = 0.826, p = 0.021)和2型糖尿病(OR = 0.886, p <;0.001),这与meta分析一致。MR分析显示,GLP-1R基因表达增加对1型糖尿病(T1DM)、甲状腺功能减退、原发性胆管炎(PBC)和类风湿性关节炎(RA)具有显著的保护作用。然而,MR分析表明,GLP-1R激动剂的表达增加可能增加Graves病(GD)、溃疡性结肠炎(UC)和牛皮癣的风险。我们的发现与meta分析的结果一致。结论本研究从遗传变异的角度为自身免疫性疾病的潜在辅助治疗提供了新的见解,为GLP-1R激动剂的安全性提供了证据。
{"title":"Exploring glucagon-like peptide-1 receptor agonists as potential disease-modifying agents in autoimmune diseases","authors":"Yuanyuan Yang ,&nbsp;Wencong Liu ,&nbsp;Zechang Zhang ,&nbsp;Yujia zhang ,&nbsp;Xuebin Wang ,&nbsp;Jing Wang ,&nbsp;Huaifang Cai ,&nbsp;Yichan Liu ,&nbsp;Ran Meng ,&nbsp;Yuqi Fu ,&nbsp;Hongmin Luo ,&nbsp;Lei Yang ,&nbsp;Wenxuan Liu","doi":"10.1016/j.jaut.2025.103414","DOIUrl":"10.1016/j.jaut.2025.103414","url":null,"abstract":"<div><h3>Background</h3><div>Glucagon-like peptide-1 receptor (GLP-1R) agonists are emerging with therapeutic agents for the treatment of two of the most prevalent metabolic disorders: diabetes and obesity. However, the causal relationship between GLP-1R agonists and autoimmune diseases is still unclear.</div></div><div><h3>Methods</h3><div>The available cis-eQTLs for drug target genes (GLP-1Rs) were used as proxies for exposure to GLP-1R agonists. Obesity and type 2 diabetes mellitus (T2DM) were used as positive controls to ensure the reliability of the genetic instrument. Mendelian randomization (MR) was performed to reveal the causal association of genetic proxy GLP-1R agonists with 18 autoimmune diseases from the IEU OpenGwas database and FinnGen database. Finally, the results of the two databases were analyzed via meta-analysis.</div></div><div><h3>Results</h3><div>A total of 22 significant cis-eQTL single-nucleotide polymorphisms were included as genetic instruments. Positive control analysis revealed that GLP-1R agonists were significantly associated with obesity (OR = 0.826, <em>p</em> = 0.021) and T2DM (OR = 0.886, <em>p</em> &lt; 0.001), which is consistent with the meta-analysis. MR analysis revealed that increased expression of the GLP-1R gene has a significant protective effect on type 1 diabetes mellitus (T1DM), hypothyroidism, primary biliary cholangitis (PBC) and rheumatoid arthritis (RA). However, the MR analysis suggested that increased expression of GLP-1R agonists may increase the risk of Graves' disease (GD), ulcerative colitis (UC) and psoriasis. Our findings were consistent with those of the meta-analysis.</div></div><div><h3>Conclusions</h3><div>This study provides new insights into potential adjuvant treatments for autoimmune diseases from the perspective of genetic variation and provides evidence for the safety of GLP-1R agonists.</div></div>","PeriodicalId":15245,"journal":{"name":"Journal of autoimmunity","volume":"153 ","pages":"Article 103414"},"PeriodicalIF":7.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interleukin 17-producing C-C motif chemokine receptor 6 + conventional CD4+ T cells are arthritogenic in an animal model of spondyloarthritis 在脊椎关节炎动物模型中,产生白细胞介素17的C-C基序趋化因子受体6 +常规CD4+ T细胞可致关节炎
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2025-03-31 DOI: 10.1016/j.jaut.2025.103413
Marie Beaufrère , Manon Jacoutot , Roula Said Nahal , Gina Cosentino , Tom Hutteau-Hamel , Gaelle Clavel , Aude Jobart Malfait , Luiza M. Araujo , Maxime Breban , Simon Glatigny

Objective

Spondyloarthritis (SpA) is a group of chronic inflammatory disorders associated with the human leukocyte antigen (HLA) class I allele HLA-B27. Transgenic rats expressing HLA-B27 and human β2-microglobulin (B27 rats) develop clinical manifestations resembling SpA called rat SpA. IL-17 and TNF are key proinflammatory cytokines implicated in both human and rat SpA. We aimed to determine which T cell subset(s) produce IL-17 and TNF during rat SpA, characterize their tissue distribution and tested their pathogenicity in vivo.

Methods

Cytokine production by T cell subsets was evaluated in target tissues and lymphoid organs during rat SpA. Pathogenicity of purified IL-17+ cells was assessed in vivo by cell transfer. Blood samples were used to translate B27 rats findings to SpA patients.

Results

Conventional CD4+ T cells (Foxp3-; Tconv) and γδ T cells were the main producers of both IL-17 and TNF in B27 rats. IL-17-producing Tconv and γδ T cells were expanded in the colon of premorbid 3-weeks-old B27 rats. C-C motif chemokine receptor 6 (CCR6) allowed the isolation of IL-17+ Tconv (Th17) in rat. Transfer of B27 rat IL-17-producing CCR6+ Tconv but not of γδ T cells into disease-free nude B27 rats induced arthritis, directly demonstrating for the first time the arthritogenic potential of Th17 cells in SpA. Finally, a CCR6+ IL-17+ Tconv expansion enriched for IL-17F production was evidenced in SpA patients.

Conclusion

Our study demonstrates that IL-17+TNF+CCR6+ Th17 cells and IL-17+ γδ T cells are expanded preceding SpA onset in B27 rats and that only IL-17+TNF+CCR6+ Th17 cells can trigger arthritis.
目的:软骨关节炎(SpA)是一组与人类白细胞抗原(HLA) I类等位基因HLA- b27相关的慢性炎症性疾病。表达HLA-B27和人β2微球蛋白的转基因大鼠(B27大鼠)出现类似SpA的临床表现,称为大鼠SpA。IL-17和TNF是人和大鼠SpA中涉及的关键促炎细胞因子。我们旨在确定大鼠SpA期间哪些T细胞亚群产生IL-17和TNF,表征其组织分布并测试其体内致病性。方法观察大鼠SpA过程中T细胞亚群在靶组织和淋巴器官中产生细胞因子的情况。通过细胞转移评估纯化的IL-17+细胞的体内致病性。血液样本用于将B27大鼠的发现转化为SpA患者。结果常规CD4+ T细胞(Foxp3-;Tconv和γδ T细胞是B27大鼠IL-17和TNF的主要产生细胞。产il -17的Tconv和γδ T细胞在病前3周龄B27大鼠结肠中扩增。C-C基序趋化因子受体6 (CCR6)可在大鼠体内分离IL-17+ Tconv (Th17)。将B27大鼠il -17生成CCR6+ Tconv而非γδ T细胞转移到无病裸B27大鼠体内诱导关节炎,首次直接证明了Th17细胞在SpA中的致关节炎潜能。最后,在SpA患者中证实了CCR6+ IL-17+ Tconv扩增富集IL-17F的产生。结论B27大鼠在SpA发病前IL-17+TNF+CCR6+ Th17细胞和IL-17+ γδ T细胞扩增,只有IL-17+TNF+CCR6+ Th17细胞可触发关节炎。
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引用次数: 0
T-bet+CD11c+ age-associated B cells resist BLyS- and CD20-targeted ablation in murine lupus models 小鼠狼疮模型中T-bet+CD11c+年龄相关B细胞抵抗BLyS和cd20靶向消融
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2025-03-30 DOI: 10.1016/j.jaut.2025.103410
James J. Knox, Jean L. Scholz, Hannah Futeran, Sofia Cataliotti, Michael P. Cancro

Objective

B cell ablation strategies show promise for treating humoral autoimmune diseases, but their impact on pathogenic tissue-localized T-bet+CD11c+ age-associated B cells (ABCs) is poorly defined. We assessed whether mAb-mediated B cell depletion impacts ABCs and other splenic B cell subsets in two mouse models of lupus.

Methods

Following disease onset, we injected NZBxNZWF1 mice (NZBWF1; n = 72) or bm12 chronic graft versus host disease mice (cGVHD; n = 59) with 0.2 mg or 1 mg of anti-BLyS (10F4), anti-CD20 (18B12), combined treatment, or saline. Spleens were harvested after two weeks and B cell subset representation was analyzed via flow cytometry.

Results

In the NZBWF1 model, lymphopenia and resistance to 10F4 and 18B12 that arose concomitant with disease onset complicated interpretation, as ablative activity was partial and variable in the follicular (FO) and marginal zone (MZ) pools. Conversely, the T-bet+CD11c+ ABC pool was unchanged or enlarged versus controls and was entirely refractory to antibody treatments. In the cGVHD model, both 10F4 and 18B12 treatments ablated nearly all FO B cells. MZ B cells were profoundly ablated by 10F4 but spared by 18B12 treatment, whereas 10F4 treatment spared a small, undefined subset of splenic B cells that was ablated by 18B12. In contrast, T-bet+CD11c+ ABCs were minimally impacted by either reagent alone or combined, regardless of dose.

Conclusion

The spleen-resident T-bet+CD11c+ ABC pool resists anti-BLyS and anti-CD20 ablative treatment. These findings have implications for antibody-mediated ablative strategies in patients with autoimmune diseases.
B细胞消融策略有望治疗体液性自身免疫性疾病,但其对致病性组织定位的T-bet+CD11c+年龄相关B细胞(abc)的影响尚不明确。在两种狼疮小鼠模型中,我们评估了单克隆抗体介导的B细胞耗损是否会影响abc和其他脾B细胞亚群。方法发病后注射NZBxNZWF1小鼠(NZBWF1;n = 72)或bm12慢性移植物抗宿主病小鼠(cGVHD;n = 59)分别给予0.2 mg或1mg抗blys (10F4)、抗cd20 (18B12)、联合治疗或生理盐水。两周后取脾,流式细胞术分析B细胞亚群代表性。结果在NZBWF1模型中,由于滤泡区(FO)和边缘区(MZ)的消融活性是局部的和可变的,因此,伴随疾病发作而出现的淋巴细胞减少和对10F4和18B12的耐药性使解释变得复杂。相反,T-bet+CD11c+ ABC库与对照组相比没有变化或增大,并且对抗体治疗完全难治。在cGVHD模型中,10F4和18B12处理几乎消融了所有FO B细胞。MZ B细胞被10F4彻底消融,但被18B12治疗保留,而10F4治疗保留了一小部分被18B12消融的脾B细胞。相比之下,无论剂量如何,T-bet+CD11c+ abc均受到单独或联合试剂的最小影响。结论脾驻留T-bet+CD11c+ ABC池对抗blys和抗cd20消融治疗具有抵抗性。这些发现对自身免疫性疾病患者的抗体介导消融策略具有启示意义。
{"title":"T-bet+CD11c+ age-associated B cells resist BLyS- and CD20-targeted ablation in murine lupus models","authors":"James J. Knox,&nbsp;Jean L. Scholz,&nbsp;Hannah Futeran,&nbsp;Sofia Cataliotti,&nbsp;Michael P. Cancro","doi":"10.1016/j.jaut.2025.103410","DOIUrl":"10.1016/j.jaut.2025.103410","url":null,"abstract":"<div><h3>Objective</h3><div>B cell ablation strategies show promise for treating humoral autoimmune diseases, but their impact on pathogenic tissue-localized T-bet<sup>+</sup>CD11c<sup>+</sup> age-associated B cells (ABCs) is poorly defined. We assessed whether mAb-mediated B cell depletion impacts ABCs and other splenic B cell subsets in two mouse models of lupus.</div></div><div><h3>Methods</h3><div>Following disease onset, we injected NZBxNZWF1 mice (NZBWF1; n = 72) or bm12 chronic graft versus host disease mice (cGVHD; n = 59) with 0.2 mg or 1 mg of anti-BLyS (10F4), anti-CD20 (18B12), combined treatment, or saline. Spleens were harvested after two weeks and B cell subset representation was analyzed via flow cytometry.</div></div><div><h3>Results</h3><div>In the NZBWF1 model, lymphopenia and resistance to 10F4 and 18B12 that arose concomitant with disease onset complicated interpretation, as ablative activity was partial and variable in the follicular (FO) and marginal zone (MZ) pools. Conversely, the T-bet<sup>+</sup>CD11c<sup>+</sup> ABC pool was unchanged or enlarged versus controls and was entirely refractory to antibody treatments. In the cGVHD model, both 10F4 and 18B12 treatments ablated nearly all FO B cells. MZ B cells were profoundly ablated by 10F4 but spared by 18B12 treatment, whereas 10F4 treatment spared a small, undefined subset of splenic B cells that was ablated by 18B12. In contrast, T-bet<sup>+</sup>CD11c<sup>+</sup> ABCs were minimally impacted by either reagent alone or combined, regardless of dose.</div></div><div><h3>Conclusion</h3><div>The spleen-resident T-bet<sup>+</sup>CD11c<sup>+</sup> ABC pool resists anti-BLyS and anti-CD20 ablative treatment. These findings have implications for antibody-mediated ablative strategies in patients with autoimmune diseases.</div></div>","PeriodicalId":15245,"journal":{"name":"Journal of autoimmunity","volume":"153 ","pages":"Article 103410"},"PeriodicalIF":7.9,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Anti-annexin A4 antibody as a biomarker for desquamative interstitial pneumonia 抗膜联蛋白A4抗体作为脱屑性间质性肺炎的生物标志物
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2025-03-28 DOI: 10.1016/j.jaut.2025.103409
Noriho Sakamoto , Minoru Satoh , Kaname Ohyama , Nozomi Aibara , Yasuhiko Yamano , Yasuhiro Kondoh , Shimpei Morimoto , Mari Yamasue , Kosaku Komiya , Yoshiaki Kinoshita , Hiroshi Ishii , Masaki Fujita , Shigehisa Yanagi , Toshimasa Shimizu , Kiyoyasu Fukushima , Yoshiko Akiyama , Ritsuko Murakami , Takatomo Tokito , Daisuke Okuno , Mutsumi Ozasa , Hiroshi Mukae
Desquamative interstitial pneumonia (DIP), a rare type of idiopathic interstitial pneumonia (IIP), is smoking-related. However, some cases of DIP can also occur in non-smokers with autoimmune disorders. The diagnosis of DIP requires an invasive surgical lung biopsy, therefore, identifying a non-invasive diagnostic biomarker for DIP is crucial. This study aimed to elucidate autoantibodies specific for DIP and evaluate their diagnostic utility. Autoantibodies in the sera of patients with DIP were screened using immunoprecipitation. The common proteins recognized by autoantibodies in patients with DIP were identified using mass spectrometry and enzyme-linked immunosorbent assay (ELISA), and compared to other types of interstitial lung diseases (ILD) and pulmonary diseases. Several characteristic proteins commonly recognized by the sera of patients with DIP were revealed using immunoprecipitation and these proteins were identified as annexin A (ANXA) proteins using mass spectrometry. Using ELISA, autoantibodies to several ANXA were detected more frequently and specifically in DIP compared with those with other types of ILDs and pulmonary diseases. In particular, anti-ANXA4 antibodies had a sensitivity of 52.6 % and specificity of 99 % for DIP compared with those of other types of ILD. Therefore, anti-ANXAs antibodies, especially anti-ANXA4, could be a candidate diagnostic biomarker for DIP.
脱屑性间质性肺炎(DIP)是一种罕见的特发性间质性肺炎(IIP),与吸烟有关。然而,一些DIP病例也可能发生在患有自身免疫性疾病的非吸烟者身上。DIP的诊断需要侵入性手术肺活检,因此,确定DIP的非侵入性诊断生物标志物是至关重要的。本研究旨在阐明DIP特异性自身抗体并评估其诊断价值。采用免疫沉淀法筛选DIP患者血清中的自身抗体。使用质谱法和酶联免疫吸附试验(ELISA)鉴定DIP患者自身抗体识别的常见蛋白质,并与其他类型的间质性肺疾病(ILD)和肺部疾病进行比较。免疫沉淀法发现DIP患者血清中常见的几种特征蛋白,质谱法鉴定为膜联蛋白A (ANXA)蛋白。ELISA检测结果显示,与其他类型的ILDs和肺部疾病相比,DIP中几种ANXA自身抗体的检测频率和特异性更高。特别是,与其他类型的ILD相比,抗anxa4抗体对DIP的敏感性为52.6%,特异性为99%。因此,抗anxas抗体,特别是抗anxa4抗体,可能是DIP的候选诊断生物标志物。
{"title":"Anti-annexin A4 antibody as a biomarker for desquamative interstitial pneumonia","authors":"Noriho Sakamoto ,&nbsp;Minoru Satoh ,&nbsp;Kaname Ohyama ,&nbsp;Nozomi Aibara ,&nbsp;Yasuhiko Yamano ,&nbsp;Yasuhiro Kondoh ,&nbsp;Shimpei Morimoto ,&nbsp;Mari Yamasue ,&nbsp;Kosaku Komiya ,&nbsp;Yoshiaki Kinoshita ,&nbsp;Hiroshi Ishii ,&nbsp;Masaki Fujita ,&nbsp;Shigehisa Yanagi ,&nbsp;Toshimasa Shimizu ,&nbsp;Kiyoyasu Fukushima ,&nbsp;Yoshiko Akiyama ,&nbsp;Ritsuko Murakami ,&nbsp;Takatomo Tokito ,&nbsp;Daisuke Okuno ,&nbsp;Mutsumi Ozasa ,&nbsp;Hiroshi Mukae","doi":"10.1016/j.jaut.2025.103409","DOIUrl":"10.1016/j.jaut.2025.103409","url":null,"abstract":"<div><div>Desquamative interstitial pneumonia (DIP), a rare type of idiopathic interstitial pneumonia (IIP), is smoking-related. However, some cases of DIP can also occur in non-smokers with autoimmune disorders. The diagnosis of DIP requires an invasive surgical lung biopsy, therefore, identifying a non-invasive diagnostic biomarker for DIP is crucial. This study aimed to elucidate autoantibodies specific for DIP and evaluate their diagnostic utility. Autoantibodies in the sera of patients with DIP were screened using immunoprecipitation. The common proteins recognized by autoantibodies in patients with DIP were identified using mass spectrometry and enzyme-linked immunosorbent assay (ELISA), and compared to other types of interstitial lung diseases (ILD) and pulmonary diseases. Several characteristic proteins commonly recognized by the sera of patients with DIP were revealed using immunoprecipitation and these proteins were identified as annexin A (ANXA) proteins using mass spectrometry. Using ELISA, autoantibodies to several ANXA were detected more frequently and specifically in DIP compared with those with other types of ILDs and pulmonary diseases. In particular, anti-ANXA4 antibodies had a sensitivity of 52.6 % and specificity of 99 % for DIP compared with those of other types of ILD. Therefore, anti-ANXAs antibodies, especially anti-ANXA4, could be a candidate diagnostic biomarker for DIP.</div></div>","PeriodicalId":15245,"journal":{"name":"Journal of autoimmunity","volume":"153 ","pages":"Article 103409"},"PeriodicalIF":7.9,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mepolizumab versus benralizumab for eosinophilic granulomatosis with polyangiitis (EGPA): A European real-life retrospective comparative study Mepolizumab与benralizumab治疗嗜酸性肉芽肿病合并多血管炎(EGPA):一项欧洲现实回顾性比较研究
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2025-03-26 DOI: 10.1016/j.jaut.2025.103398
Irene Mattioli , Maria Letizia Urban , Roberto Padoan , Aladdin J. Mohammad , Carlo Salvarani , Chiara Baldini , Alvise Berti , Paolo Cameli , Marco Caminati , Pascal Cathébras , Fulvia Chieco Bianchi , Francesco Cinetto , Jan Willem Cohen Tervaert , Angelo Coppola , Giulia Costanzo , Vincent Cottin , Claudia Crimi , Stefano Del Giacco , Charlene Desaintjean , Allyson Egan , Barbara Trezzi

Background

Following the results of the MANDARA trial, this real-life study aimed at comparing the effectiveness and safety profile of mepolizumab versus benralizumab in a European EGPA cohort.

Methods

We conducted a retrospective observational comparative study including EGPA patients, who received mepolizumab or benralizumab at the asthma dose. Patients were matched 1:1 by sex, age, BVAS and oral corticosteroid (OCS) dosage at the treatment initiation (T0). Complete response (CR) and partial response (PR), disease activity, OCS, pulmonary parameters, eosinophil count, relapses, and safety outcomes were also compared at 3, 6 and 12 months.

Results

Patients treated with mepolizumab or benralizumab (n = 88 each) were matched: 57 % were females, median age was 54 years (IQR 45–60), median OCS dose 10 (7.5–12.5) and 10 (7–13) mg/day, median BVAS 4 (2–7) and 3 (2–8), respectively. 45.4 % of patients in the mepolizumab group and 51.1 % in the benralizumab group achieved CR or PR at T3, with CR steadily increasing during follow-up for both treatments. At T12, a higher CR rate was found in the benralizumab group (48.1 % vs 32.4 %, p = 0.005). No differences in BVAS, OCS, and respiratory parameters were observed between groups at the different timepoints. Throughout the follow-up, both treatments reduced eosinophil count, although a deeper reduction was found in the benralizumab group at all timepoints (p < 0.0001). Safety profile was comparable between patient groups.

Conclusion

Mepolizumab and benralizumab showed comparable overall effectiveness and safety in EGPA. However, benralizumab achieved a higher CR rate at T12, and a deeper peripheral eosinophil reduction.
在MANDARA试验结果之后,这项现实生活中的研究旨在比较mepolizumab与benralizumab在欧洲EGPA队列中的有效性和安全性。方法我们进行了一项回顾性观察性比较研究,纳入EGPA患者,接受mepolizumab或benralizumab的哮喘剂量。患者按性别、年龄、BVAS和治疗开始时口服皮质类固醇(OCS)剂量(T0)进行1:1匹配。完全缓解(CR)和部分缓解(PR)、疾病活动性、OCS、肺参数、嗜酸性粒细胞计数、复发和安全性结果也在3、6和12个月时进行了比较。结果mepolizumab或benralizumab治疗的患者(各88例)匹配:57%为女性,中位年龄为54岁(IQR 45-60),中位OCS剂量为10(7.5-12.5)和10 (7-13)mg/天,中位BVAS分别为4(2-7)和3(2-8)。45.4%的mepolizumab组患者和51.1%的benralizumab组患者在T3达到CR或PR,在两种治疗的随访期间CR稳步增加。在T12时,benralizumab组的CR率更高(48.1% vs 32.4%, p = 0.005)。各组在不同时间点的BVAS、OCS和呼吸参数均无差异。在整个随访过程中,两种治疗均降低了嗜酸性粒细胞计数,尽管贝纳利珠单抗组在所有时间点均有更深程度的降低(p <;0.0001)。患者组间的安全性具有可比性。结论mepolizumab和benralizumab在EGPA治疗中具有相当的总体有效性和安全性。然而,贝纳利珠单抗在T12时实现了更高的CR率,以及更深的外周嗜酸性粒细胞减少。
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引用次数: 0
Treatment of uveitis in Blau syndrome: A systematic review and meta-analysis Blau综合征葡萄膜炎的治疗:系统回顾和荟萃分析
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2025-03-26 DOI: 10.1016/j.jaut.2025.103401
Ilaria Maccora , Carine Wouters , Carlos D. Rosè , Valerio Maniscalco , Salvatore de Masi , Maria Vincenza Mastrolia , Edoardo Marrani , Ilaria Pagnini , Gabriele Simonini

Objectives

Blau syndrome (BS) is a rare autoinflammatory disease caused by gain of function variants in NOD2. Uveitis is one of the triad features with arthritis and dermatitis. Management of uveitis is challenging, and uncontrolled uveitis may lead to blindness. We aim to evaluate the evidence regarding effectiveness of systemic treatments, including conventional Disease Modifying anti-Rheumatic drugs(cDMARDs) and biologic DMARDs(bDMARDs), for the management of uveitis in BS.

Methods

A systematic literature review and meta-analysis was performed according to PRISMA guidelines. Papers were selected if they reported patients with BS and uveitis who received systemic treatment. Papers were selected if reporting efficacy according to Standardization of Uveitis Nomenclature (SUN) criteria.

Results

We identified 1205 papers with 11 selected for systematic review and meta-analysis. Among the 11 selected papers, we identified 88 treatments. Among these, 53 were cDMARDs (36 methotrexate, 7 azathioprine, 5 mycophenolate, 3 thalidomide, 1 tacrolimus and 1 cyclosporine) and 35 bDMARDs (23 adalimumab, 6 infliximab, 4 etanercept, 1 golimumab and 1 canakinumab). The proportion of children showing improvement of uveitis was 20 % (95 % CI 2–46) and 22 % (95 % CI3-47) for cDMARDs and bDMARDs respectively (χ20.23, p = 0.631). No differences were observed among the administered drugs (χ27.21, p = 0.706).

Conclusion

The data show that there is not enough evidence to establish a preferred treatment for managing uveitis in BS. Considering the rarity, the potential severity and refractoriness to current treatments of the disease, there is a critical need for better understanding of pathophysiology and expert driven treatment guidelines for of BS-uveitis.
目的blau综合征(BS)是一种罕见的由NOD2功能变异获得引起的自身炎症性疾病。葡萄膜炎是关节炎和皮炎的三联征之一。葡萄膜炎的治疗具有挑战性,不受控制的葡萄膜炎可能导致失明。我们的目标是评估系统性治疗的有效性证据,包括传统的疾病修饰抗风湿药物(cDMARDs)和生物DMARDs(bDMARDs),用于治疗BS患者的葡萄膜炎。方法根据PRISMA指南进行系统文献综述和meta分析。报道BS和葡萄膜炎患者接受全身治疗的论文入选。根据葡萄膜炎命名法标准化(SUN)标准选择报告疗效的论文。结果共纳入1205篇论文,其中11篇入选系统评价和荟萃分析。在入选的11篇论文中,我们确定了88种治疗方法。其中,cdmard 53个(甲氨喋呤36个,硫唑嘌呤7个,霉酚酸酯5个,沙利度胺3个,他克莫司1个,环孢素1个),bdmard 35个(阿达木单抗23个,英夫利昔单抗6个,依那西普4个,戈利姆单抗1个,canakinumab 1个)。cDMARDs患儿葡萄膜炎改善的比例为20% (95% CI 2-46), bDMARDs患儿葡萄膜炎改善的比例为22% (95% CI3-47) (χ20.23, p = 0.631)。各给药组间差异无统计学意义(χ27.21, p = 0.706)。结论没有足够的证据来确定治疗BS患者葡萄膜炎的首选治疗方法。考虑到这种疾病的罕见性、潜在的严重性和目前治疗方法的难治性,迫切需要更好地了解bs -葡萄膜炎的病理生理学和专家驱动的治疗指南。
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引用次数: 0
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Journal of autoimmunity
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