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Quality of life in sarcoidosis 结节病患者的生活质量。
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2024-12-01 DOI: 10.1016/j.jaut.2023.103123
Catharina C. Moor , Ogugua Ndili Obi , Vivienne Kahlmann , Katharina Buschulte , Marlies S. Wijsenbeek
Having sarcoidosis often has a major impact on quality of life of patients and their families. Improving quality of life is prioritized as most important treatment aim by many patients with sarcoidosis, but current evidence and treatment options are limited. In this narrative review, we describe the impact of sarcoidosis on various aspects of daily life, evaluate determinants of health-related quality of life (HRQoL), and provide an overview of the different patient-reported outcome measures to assess HRQoL in sarcoidosis. Moreover, we review the current evidence for pharmacological and non-pharmacological interventions to improve quality of life for people with sarcoidosis.
结节病通常会对患者及其家人的生活质量产生重大影响。提高生活质量是许多结节病患者最重要的治疗目标,但目前的证据和治疗选择有限。在这篇叙述性综述中,我们描述了结节病对日常生活各个方面的影响,评估了与健康相关的生活质量(HRQoL)的决定因素,并概述了评估结节病HRQoL的不同患者报告的结果指标。此外,我们回顾了目前药物和非药物干预措施提高结节病患者生活质量的证据。
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引用次数: 0
Kidney manifestations of sarcoidosis 肉样瘤病的肾脏表现。
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2024-12-01 DOI: 10.1016/j.jaut.2024.103207
Francesco Bonella , Adriane DM Vorselaars , Benjamin Wilde
Renal involvement is a clinically relevant organ manifestation of sarcoidosis, leading to increased morbidity and complications. Although the exact incidence remains unknown, renal disease is likely to occur in up to one third of all sarcoidosis patients. Every patient with newly diagnosed sarcoidosis should receive a renal work-up and screening for disrupted calcium metabolism.
Amid various forms of glomerulonephritis, granulomatous interstitial nephritis is the most common one, but it rarely leads to renal impairment. Histologically, granulomas can be absent. Nephrocalcinosis and nephrolithiasis are frequent forms when hypercalcaemia or hypercalciuria occur. Drugs used for treatment of systemic sarcoidosis can also cause renal damage.
Due to its high heterogeneity, renal sarcoidosis can be difficult to treat. Glucocorticoids and various immunosuppressive treatments have been proven to be effective based on case series, but clinical trials are lacking. A treatment guideline for renal sarcoidosis is urgently needed.
In this review article, we present an overview of the different forms of renal sarcoidosis and the diagnostic steps to confirm renal involvement; in addition, we provide insights on the management and available treatments. A better understanding regarding the pathogenesis of sarcoidosis is the key for the development of more specific, targeted therapies.
肾脏受累是肉样瘤病的一种临床相关器官表现,会导致发病率和并发症增加。虽然确切的发病率尚不清楚,但多达三分之一的肉样瘤病患者可能会出现肾脏疾病。每位新确诊的肉样瘤病患者都应接受肾脏检查和钙代谢紊乱筛查。在各种形式的肾小球肾炎中,肉芽肿性间质性肾炎是最常见的一种,但它很少导致肾功能损害。在组织学上,肉芽肿可以不存在。当出现高钙血症或高钙尿症时,肾钙化和肾结石是常见的表现形式。用于治疗系统性肉样瘤病的药物也会造成肾损害。由于其高度异质性,肾肉瘤病可能很难治疗。根据病例研究,糖皮质激素和各种免疫抑制治疗被证明是有效的,但缺乏临床试验。肾肉样瘤病的治疗指南亟待制定。在这篇综述文章中,我们概述了不同形式的肾肉样瘤病以及确诊肾脏受累的诊断步骤;此外,我们还提供了有关管理和现有治疗方法的见解。更好地了解肉样瘤病的发病机制是开发更具针对性的靶向疗法的关键。
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引用次数: 0
The immunopathogenesis of sarcoidosis 肉样瘤病的免疫发病机制。
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2024-12-01 DOI: 10.1016/j.jaut.2024.103247
Jelle Miedema , Francesco Cinetto , Anna Smed-Sörensen , Paolo Spagnolo
Sarcoidosis is a granulomatous multiorgan disease, thought to result from exposure to yet unidentified antigens in genetically susceptible individuals. The exaggerated inflammatory response that leads to granuloma formation is highly complex and involves the innate and adaptive immune system. Consecutive immunological studies using advanced technology have increased our understanding of aberrantly activated immune cells, mediators and pathways that influence the formation, maintenance and resolution of granulomas. Over the years, it has become increasingly clear that disease immunopathogenesis can only be understood if the clinical heterogeneity of sarcoidosis is taken into consideration, along with the distribution of immune cells in peripheral blood and involved organs. Most studies offer an immunological snapshot during disease course, while the cellular composition of both the circulation and tissue microenvironment may change over time. Despite these challenges, novel insights on the role of the immune system are continuously published, thus bringing the field forward.
This review highlights current knowledge on the innate and adaptive immune responses involved in sarcoidosis pathogenesis, as well as the pathways involved in non-resolving disease and fibrosis development. Additionally, we describe proposed immunological mechanisms responsible for drug-induced sarcoid like reactions. Although many aspects of disease immunopathogenesis remain to be unraveled, the identification of crucial immune reactions in sarcoidosis may help identify new treatment targets. We therefore also discuss potential therapies and future strategies based on the latest immunological findings.
肉样瘤病是一种肉芽肿性多器官疾病,被认为是由于基因易感者暴露于尚未确定的抗原而引起的。导致肉芽肿形成的夸张炎症反应非常复杂,涉及先天性和适应性免疫系统。利用先进技术进行的连续免疫学研究增加了我们对异常激活的免疫细胞、介质和影响肉芽肿形成、维持和消退的途径的了解。多年来,我们越来越清楚地认识到,只有考虑到肉样瘤病的临床异质性以及免疫细胞在外周血和受累器官中的分布,才能理解疾病的免疫发病机制。大多数研究提供的是病程中的免疫学快照,而血液循环和组织微环境中的细胞组成可能会随着时间的推移而发生变化。尽管存在这些挑战,有关免疫系统作用的新见解仍在不断发表,从而推动了该领域的发展。这篇综述重点介绍了目前有关肉样瘤病发病机制中先天性免疫反应和适应性免疫反应的知识,以及非缓解性疾病和纤维化发展所涉及的途径。此外,我们还介绍了导致药物诱发类肉样瘤反应的免疫学机制。尽管疾病免疫发病机制的许多方面仍有待揭示,但确定肉样瘤病的关键免疫反应可能有助于确定新的治疗靶点。因此,我们还将根据最新的免疫学发现讨论潜在的疗法和未来的策略。
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引用次数: 0
Unraveling the immunomodulatory impact of hydroxychloroquine on peripheral T cells using single-cell RNA sequencing. 利用单细胞 RNA 测序揭示羟氯喹对外周 T 细胞免疫调节的影响
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2024-12-01 Epub Date: 2024-10-13 DOI: 10.1016/j.jaut.2024.103324
Huizhong Long, Luis Espinosa, Amr H Sawalha

Hydroxychloroquine (HCQ) is widely used in the treatment of a variety of autoimmune diseases. However, the mechanisms responsible for the immunomodulatory properties of HCQ in T cells remain unclear. Here we used single-cell RNA-sequencing to examine the effect of HCQ on T cells following in vitro stimulation. HCQ treatment led to a reduction in effector CD4+ T cells and upregulation of inhibitory genes including CTLA4 and TNFAIP3 in effector and naive CD4+ T cells, respectively. HCQ induced a significant expansion of effector CD8+ T cells, and significantly upregulated key cytotoxicity genes including GZMA, GZMB, GZMH, KLRD1, NKG7, and PRF1, as well as IFNG expression. Furthermore, HCQ treatment led to a reduction in the CD38+ CD8+ T cell subset, which is characterized by defective cytotoxicity and thought to both play a pathogenic role and increase susceptibility to infections in autoimmunity. We analyzed single-cell RNA-sequencing data in effector CD8+ T cells from lupus patients with or without HCQ treatment and confirmed upregulation of key cytotoxicity genes in patients receiving HCQ. In conclusion, this work provides additional insights into the immunomodulatory effects of HCQ and indicates that HCQ improves T cell cytotoxicity, which could explain a previously suggested protective effect of HCQ against infections in patients with autoimmune diseases.

羟氯喹(HCQ)被广泛用于治疗各种自身免疫性疾病。然而,HCQ对T细胞免疫调节作用的机制仍不清楚。在这里,我们使用单细胞 RNA 序列分析法研究了 HCQ 在体外刺激后对 T 细胞的影响。HCQ 处理导致效应 CD4+ T 细胞减少,抑制基因(包括 CTLA4 和 TNFAIP3)分别在效应和幼稚 CD4+ T 细胞中上调。HCQ 可诱导效应 CD8+ T 细胞显著扩增,并显著上调关键细胞毒性基因(包括 GZMA、GZMB、GZMH、KLRD1、NKG7 和 PRF1)以及 IFNG 的表达。此外,HCQ 治疗导致 CD38+ CD8+ T 细胞亚群减少,该亚群的特点是细胞毒性缺陷,被认为在自身免疫中既起致病作用又增加感染易感性。我们分析了接受或未接受 HCQ 治疗的狼疮患者效应 CD8+ T 细胞的单细胞 RNA 序列数据,证实了接受 HCQ 治疗的患者关键细胞毒性基因的上调。总之,这项研究为了解 HCQ 的免疫调节作用提供了新的视角,并表明 HCQ 能提高 T 细胞的细胞毒性,这可以解释之前提出的 HCQ 对自身免疫性疾病患者感染的保护作用。
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引用次数: 0
Sarcoidosis and its relation to other immune-mediated diseases: Epidemiological insights 结节病及其与其他免疫介导疾病的关系:流行病学见解。
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2024-12-01 DOI: 10.1016/j.jaut.2023.103127
Elizabeth V. Arkema , Marios Rossides , Yvette C. Cozier
Several epidemiological studies show a co-occurrence of sarcoidosis with other immune-mediated diseases (IMD). There are many similarities between sarcoidosis and IMDs in their geographical distribution and risk factors. Understanding these similarities and identifying the differences can help us to better understand sarcoidosis and put it into context with other IMDs. In this review, we present the current knowledge about the overlap between sarcoidosis and other IMDs derived from epidemiological studies. Epidemiologic methods utilize study design and statistical analysis to describe the patterns in data and, ideally, identify causal relationships between an exposure and a health outcome. We discuss how study design and analysis may affect the interpretation of epidemiological studies on this topic and highlight some theories that attempt to explain the relation between sarcoidosis and other IMDs.
几项流行病学研究表明结节病与其他免疫介导的疾病(IMD)同时发生。结节病和IMDs在地理分布和危险因素方面有很多相似之处。了解这些相似之处并识别差异可以帮助我们更好地理解结节病,并将其与其他IMD结合起来。在这篇综述中,我们介绍了目前从流行病学研究中获得的结节病和其他IMD之间重叠的知识。流行病学方法利用研究设计和统计分析来描述数据中的模式,理想情况下,确定暴露与健康结果之间的因果关系。我们讨论了研究设计和分析如何影响对该主题流行病学研究的解释,并强调了一些试图解释结节病和其他IMD之间关系的理论。
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引用次数: 0
Application of laboratory models for sarcoidosis research 应用实验室模型进行肉样瘤病研究。
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2024-12-01 DOI: 10.1016/j.jaut.2024.103184
Maneesh Bhargava , Elliott D. Crouser
This manuscript will review the implications and applications of sarcoidosis models towards advancing our understanding of sarcoidosis disease mechanisms, identification of biomarkers, and preclinical testing of novel therapies. Emerging disease models and innovative research tools will also be considered.
本手稿将综述肉样瘤病模型的意义和应用,以促进我们对肉样瘤病疾病机制的了解、生物标记物的鉴定和新型疗法的临床前测试。此外,还将考虑新兴疾病模型和创新研究工具。
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引用次数: 0
Developmental drugs for sarcoidosis 开发治疗肉样瘤病的药物。
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2024-12-01 DOI: 10.1016/j.jaut.2024.103179
Ogugua Ndili Obi , Lesley Ann Saketkoo , Lisa A. Maier , Robert P. Baughman
Sarcoidosis is a multi-organ granulomatous inflammatory disease of unknown etiology. Over 50% of patients will require treatment at some point in their disease and 10%–30% will develop a chronic progressive disease with pulmonary fibrosis leading to significant morbidity and mortality.
Recently published guidelines recommend immunosuppressive therapy for sarcoidosis patients at risk of increased disease-related morbidity and mortality, and in whom disease has negatively impacted quality of life. Prednisone the currently recommended first line therapy is associated with significant toxicity however none of the other guideline recommended steroid sparing therapy is approved by regulatory agencies for use in sarcoidosis, and data in support of their use is weak. For patients with severe refractory disease requiring prolonged therapy, treatment options are limited.
The need for expanding treatment options in sarcoidosis has been emphasized. Well conducted large, randomized trials evaluating currently available therapeutic options as well as novel pathways for targeting disease are necessary to better guide treatment decisions. These trials will not be without significant challenges. Sarcoidosis is a rare disease with heterogenous presentation and variable progression and clinical outcome. There are no universally agreed upon biomarkers of disease activity and measurement of outcomes is confounded by the need to balance patient centric measures and objective measures of disease activity.
Our paper provides an update on developmental drugs in sarcoidosis and outlines several novel pathways that may be targeted for future drug development. Currently available trials are highlighted and ongoing challenges to drug development and clinical trial design are briefly discussed.
肉样瘤病是一种病因不明的多器官肉芽肿性炎症疾病。50%以上的患者在患病的某个阶段需要接受治疗,10%-30%的患者会发展为慢性进展性疾病,并伴有肺纤维化,从而导致严重的发病率和死亡率。最近发布的指南建议,对于有可能增加疾病相关发病率和死亡率的肉样瘤病患者,以及因疾病对生活质量造成负面影响的患者,应进行免疫抑制治疗。目前推荐的一线疗法泼尼松具有明显的毒性,但指南推荐的其他减少类固醇用量的疗法均未获得监管机构批准用于肉样瘤病,支持使用这些疗法的数据也很薄弱。对于需要长期治疗的严重难治性疾病患者来说,治疗方案十分有限。扩大肉样瘤病治疗方案的必要性已得到强调。为了更好地指导治疗决策,有必要对目前可用的治疗方案以及针对疾病的新途径进行充分的大型随机试验评估。这些试验并非没有重大挑战。肉样瘤病是一种罕见的疾病,表现各异,病情发展和临床结果也各不相同。目前还没有公认的疾病活动性生物标志物,而且由于需要平衡以患者为中心的测量方法和疾病活动性的客观测量方法,结果的测量也受到了干扰。我们的论文介绍了肉样瘤病研发药物的最新情况,并概述了未来药物研发可能针对的几种新途径。本文重点介绍了目前可用的试验,并简要讨论了药物开发和临床试验设计面临的挑战。
{"title":"Developmental drugs for sarcoidosis","authors":"Ogugua Ndili Obi ,&nbsp;Lesley Ann Saketkoo ,&nbsp;Lisa A. Maier ,&nbsp;Robert P. Baughman","doi":"10.1016/j.jaut.2024.103179","DOIUrl":"10.1016/j.jaut.2024.103179","url":null,"abstract":"<div><div><span>Sarcoidosis<span> is a multi-organ granulomatous </span></span>inflammatory disease<span> of unknown etiology. Over 50% of patients will require treatment at some point in their disease and 10%–30% will develop a chronic progressive disease with pulmonary fibrosis leading to significant morbidity and mortality.</span></div><div><span>Recently published guidelines recommend immunosuppressive therapy for sarcoidosis patients at risk of increased disease-related morbidity and mortality, and in whom disease has negatively impacted quality of life. </span>Prednisone the currently recommended first line therapy is associated with significant toxicity however none of the other guideline recommended steroid sparing therapy is approved by regulatory agencies for use in sarcoidosis, and data in support of their use is weak. For patients with severe refractory disease requiring prolonged therapy, treatment options are limited.</div><div>The need for expanding treatment options in sarcoidosis has been emphasized. Well conducted large, randomized trials evaluating currently available therapeutic options as well as novel pathways for targeting disease are necessary to better guide treatment decisions. These trials will not be without significant challenges. Sarcoidosis is a rare disease<span> with heterogenous presentation and variable progression and clinical outcome. There are no universally agreed upon biomarkers of disease activity and measurement of outcomes is confounded by the need to balance patient centric measures and objective measures of disease activity.</span></div><div>Our paper provides an update on developmental drugs in sarcoidosis and outlines several novel pathways that may be targeted for future drug development<span>. Currently available trials are highlighted and ongoing challenges to drug development and clinical trial design are briefly discussed.</span></div></div>","PeriodicalId":15245,"journal":{"name":"Journal of autoimmunity","volume":"149 ","pages":"Article 103179"},"PeriodicalIF":7.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140318366","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
PD-1 antibody interactions with Fc gamma receptors enable PD-1 agonism to inhibit T cell activation – therapeutic implications for autoimmunity PD-1 抗体与 Fc γ 受体的相互作用使 PD-1 激动剂能够抑制 T 细胞活化--对自身免疫的治疗意义
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2024-11-27 DOI: 10.1016/j.jaut.2024.103339
Yiqing Feng , Gordafaried Deyanat-Yazdi , Kristin Newburn , Scott Potter , Mark Wortinger , Miriam Ramirez , Stephanie M.E. Truhlar , Pia P. Yachi
PD-1 has emerged as a central inhibitory checkpoint receptor in maintaining immune homeostasis and as a target in cancer immunotherapies. However, targeting PD-1 for the treatment of autoimmune diseases has been more challenging. We recently showed in a phase 2a trial that PD-1 could be stimulated with the PD-1 agonist antibody peresolimab to treat rheumatoid arthritis. Here, we demonstrate that PD-1 antibodies can elicit agonism and inhibit T cell activation by co-localization of PD-1 with the T cell receptor via Fcγ receptor (FcγR) engagement. Three PD-1 agonist antibodies with different antigen binding domains, including the clinically validated PD-1 blocking antibody pembrolizumab, suppressed T cell activation to a similar degree; this finding suggests that a specific PD-1-binding epitope is not required for PD-1 agonism. We next explored whether antibody-mediated clustering was an important driver of inhibition of T cell activation; however, we found that a monovalent PD-1 antibody was not inferior to a conventional bivalent antibody in its ability to suppress T cell activation. Importantly, we found that affinity to PD-1 correlated positively with inhibition of T cell activation, with higher affinity antibodies exhibiting higher levels of inhibition. Using a series of human Fc mutants with altered affinities to various FcγRs, we dissected the contributions of FcγRs and found that multiple FcγRs rather than a single receptor contribute to agonist activity. Our work reveals an important role for FcγR binding in the activity of PD-1 antibodies, which has implications for optimizing both PD-1 agonist and antagonist antibodies.
PD-1 已成为维持免疫平衡的核心抑制性检查点受体和癌症免疫疗法的靶点。然而,以 PD-1 为靶点治疗自身免疫性疾病却更具挑战性。我们最近在一项 2a 期试验中表明,可以用 PD-1 激动剂抗体培瑞索单抗刺激 PD-1 来治疗类风湿性关节炎。在这里,我们证明了 PD-1 抗体可以通过 Fcγ 受体(FcγR)的参与使 PD-1 与 T 细胞受体共定位,从而引起激动作用并抑制 T 细胞的活化。三种具有不同抗原结合域的PD-1激动剂抗体,包括临床验证的PD-1阻断抗体pembrolizumab,对T细胞活化的抑制程度相似;这一发现表明,PD-1激动并不需要特定的PD-1结合表位。我们接下来探讨了抗体介导的聚类是否是抑制 T 细胞活化的重要驱动因素;然而,我们发现单价 PD-1 抗体抑制 T 细胞活化的能力并不亚于传统的二价抗体。重要的是,我们发现与 PD-1 的亲和力与 T 细胞活化抑制呈正相关,亲和力越高的抗体抑制水平越高。我们利用一系列与各种 FcγR 亲和力不同的人类 Fc 突变体,剖析了 FcγR 的贡献,发现多个 FcγR 而不是单一受体对激动剂活性有贡献。我们的研究揭示了 FcγR 结合在 PD-1 抗体活性中的重要作用,这对优化 PD-1 激动剂和拮抗剂抗体都有影响。
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引用次数: 0
Sunscreen use associated with elevated prevalence of anti-nuclear antibodies in U.S. adults 防晒霜的使用与美国成年人抗核抗体流行率升高有关
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2024-11-24 DOI: 10.1016/j.jaut.2024.103340
Christine G. Parks , Todd A. Jusko , Helen C.S. Meier , Jesse Wilkerson , Lisa G. Rider , Frederick W. Miller , Dale P. Sandler

Background

Antinuclear antibody (ANA) prevalence in the U.S. population increased from 1988 to 2012, especially in white and more educated individuals. In adults ages 20–39 years from the National Health and Nutrition Examination Survey (NHANES) 2003–2004 and 2011–2012, ANA prevalence was previously associated with urinary concentrations of a common sunscreen ingredient, benzophenone 3, measured in winter. Spot urines may not capture relevant chronic exposures, thus we examined whether ANA was related to sunscreen use.

Methods

In a cross-sectional study of adults ages 20–59 (N = 416 ANA positive, 2656 ANA negative, by Hep-2 immunofluorescence, 1:80 dilution), we examined associations of ANA with reported sunscreen use when in the sun for 1 h or more. Logistic regression was used to calculate covariate-adjusted prevalence odds ratios (POR) and 95 % Confidence Intervals (CI), overall and stratified by demographic factors, season, and vitamin D. We explored associations and joint effects with other sun protective behaviors and sunburn in the past 12 months.

Results

The association of ANA with sunscreen differed by age (interaction p = 0.004): for ages 20–39, we saw an exposure response (POR 2.61, 95 % CI 1.50, 4.24 for using sunscreen always or most of the time, and POR 1.85; 1.12, 3.05 for less frequent versus never-use; trend p < 0.001). These associations were more apparent in females (interaction p = 0.082), non-Hispanic white and black participants (vs. other race/ethnicity, interaction p = 0.023), and those with sufficient serum vitamin D (≥50 vs. <50 nmol/L, interaction p = 0.001). ANA was not associated with other protective behaviors and not confounded or modified by these behaviors or recent sunburn.

Conclusions

These cross-sectional findings showed frequent sunscreen was associated with ANA in younger adults, supporting the need for replication, and longitudinal studies with detailed exposure histories.
背景1988年至2012年间,美国人口中的核抗体(ANA)流行率有所上升,尤其是在白人和受教育程度较高的人群中。在2003-2004年和2011-2012年国家健康与营养调查(NHANES)中,年龄在20-39岁的成年人中的ANA流行率与冬季测量的尿液中常见防晒霜成分二苯甲酮3的浓度有关。方法在一项针对 20-59 岁成年人的横断面研究中(通过 Hep-2 免疫荧光,1:80 稀释,N = 416 ANA 阳性,2656 ANA 阴性),我们研究了 ANA 与在阳光下晒 1 小时或更长时间时使用防晒霜的相关性。我们采用逻辑回归法计算了经协方差调整的患病几率比(POR)和 95 % 置信区间(CI),包括总体患病几率比和按人口统计学因素、季节和维生素 D 分层的患病几率比。结果ANA与防晒霜的关系因年龄而异(交互作用 p = 0.004):在 20-39 岁的人群中,我们发现了一种暴露反应(经常或大部分时间使用防晒霜的 POR 为 2.61,95 % CI 为 1.50-4.24 ;较少使用与从不使用的 POR 为 1.85; 1.12-3.05; 趋势 p < 0.001)。这些关联在女性(交互作用 p = 0.082)、非西班牙裔白人和黑人参与者(与其他种族/族裔相比,交互作用 p = 0.023)以及血清维生素 D 充足者(≥50 与 50 nmol/L,交互作用 p = 0.001)中更为明显。结论:这些横断面研究结果表明,经常使用防晒霜与年轻成人的 ANA 有关,因此有必要进行重复研究和具有详细暴露史的纵向研究。
{"title":"Sunscreen use associated with elevated prevalence of anti-nuclear antibodies in U.S. adults","authors":"Christine G. Parks ,&nbsp;Todd A. Jusko ,&nbsp;Helen C.S. Meier ,&nbsp;Jesse Wilkerson ,&nbsp;Lisa G. Rider ,&nbsp;Frederick W. Miller ,&nbsp;Dale P. Sandler","doi":"10.1016/j.jaut.2024.103340","DOIUrl":"10.1016/j.jaut.2024.103340","url":null,"abstract":"<div><h3>Background</h3><div>Antinuclear antibody (ANA) prevalence in the U.S. population increased from 1988 to 2012, especially in white and more educated individuals. In adults ages 20–39 years from the National Health and Nutrition Examination Survey (NHANES) 2003–2004 and 2011–2012, ANA prevalence was previously associated with urinary concentrations of a common sunscreen ingredient, benzophenone 3, measured in winter. Spot urines may not capture relevant chronic exposures, thus we examined whether ANA was related to sunscreen use.</div></div><div><h3>Methods</h3><div>In a cross-sectional study of adults ages 20–59 (N = 416 ANA positive, 2656 ANA negative, by Hep-2 immunofluorescence, 1:80 dilution), we examined associations of ANA with reported sunscreen use when in the sun for 1 h or more. Logistic regression was used to calculate covariate-adjusted prevalence odds ratios (POR) and 95 % Confidence Intervals (CI), overall and stratified by demographic factors, season, and vitamin D. We explored associations and joint effects with other sun protective behaviors and sunburn in the past 12 months.</div></div><div><h3>Results</h3><div>The association of ANA with sunscreen differed by age (interaction p = 0.004): for ages 20–39, we saw an exposure response (POR 2.61, 95 % CI 1.50, 4.24 for using sunscreen always or most of the time, and POR 1.85; 1.12, 3.05 for less frequent versus never-use; trend p &lt; 0.001). These associations were more apparent in females (interaction p = 0.082), non-Hispanic white and black participants (vs. other race/ethnicity, interaction p = 0.023), and those with sufficient serum vitamin D (≥50 vs. &lt;50 nmol/L, interaction p = 0.001). ANA was not associated with other protective behaviors and not confounded or modified by these behaviors or recent sunburn.</div></div><div><h3>Conclusions</h3><div>These cross-sectional findings showed frequent sunscreen was associated with ANA in younger adults, supporting the need for replication, and longitudinal studies with detailed exposure histories.</div></div>","PeriodicalId":15245,"journal":{"name":"Journal of autoimmunity","volume":"149 ","pages":"Article 103340"},"PeriodicalIF":7.9,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142697349","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
EZH2 promotes B-cell autoimmunity in primary Sjogren's syndrome via METTL3-mediated m6A modification EZH2 通过 METTL3 介导的 m6A 修饰促进原发性 Sjogren's 综合征的 B 细胞自身免疫。
IF 7.9 1区 医学 Q1 IMMUNOLOGY Pub Date : 2024-11-21 DOI: 10.1016/j.jaut.2024.103341
Yiying Yang , Muyuan Li , Liqing Ding , Ying Zhang , Ke Liu , Meidong Liu , Yisha Li , Hui Luo , Xiaoxia Zuo , Huali Zhang , Muyao Guo
<div><h3>Objective</h3><div>Enhancer of zeste homologue 2 (EZH2) plays an important role in promoting B-cell activation and differentiation. This study aimed to elucidate the role of EZH2 in the B-cell autoimmune response in primary Sjögren's syndrome (pSS) and to explore the therapeutic potential of inhibiting EZH2 in pSS.</div></div><div><h3>Methods</h3><div>Single-cell RNA sequencing analysis of B cells in peripheral blood from pSS patients was conducted to identify abnormal expression of EZH2 and METTL3 in B-cell subsets. The levels of EZH2 were further validated across multiple B-cell subsets and the salivary glands (SGs) of pSS patients, as well as three different mouse models of Sjögren's syndrome (SS). Correlation analyses were performed to explore the relationship between the expression of EZH2 and clinical features of pSS patients. Following EZH2 inhibition, SS-like signs and antibody production were assessed in an experimental Sjögren syndrome (ESS) mouse model. RNA sequencing (RNA-seq) and chromatin immunoprecipitation sequencing (ChIP-seq) data post-EZH2 inhibition were bioinformatically analyzed to identify the EZH2 targets in pSS. ChIP-qPCR was performed to validate the binding of H3K27me3 to the <em>CDKN1A</em> promoter. Flow cytometric apoptosis analysis and Carboxy Fluorescein Succinimidyl Ester (CFSE) assay were used to assess the impact of an EZH2 inhibitor on B-cell apoptosis and proliferation. Additionally, METTL3 expression and its correlation with disease activity were analyzed in pSS patients. EZH2 expression was examined after METTL3 knockdown. METTL3-RNA immunoprecipitation (RIP) and actinomycin D assays were conducted to confirm the direct binding of METTL3 to EZH2 mRNA and its impact on mRNA stability. M6A-RIP-qPCR was performed to validate the presence of m6A modifications on <em>EZH2</em> mRNA.</div></div><div><h3>Results</h3><div>EZH2 was found upregulated in multiple B-cell subsets from the peripheral blood and SGs of pSS patients, as well as in three different animal models of SS. The expression of EZH2 in B cells was positively correlated with the ESSDAI score, which is a measure of disease activity. With treatment of EZH2 inhibitor, SS-like signs alleviated and autoantibody production reduced in ESS mice. Similarly, in pSS patients, METTL3 expression was increased in the SGs and peripheral blood CD19<sup>+</sup> B cells, also showing a positively correlated with the ESSDAI score. With knockdown of <em>METTL3</em>, the expression of EZH2 reduced. Mechanistically, EZH2 inhibited B-cell apoptosis and promoted B-cell proliferation by catalyzing H3K27me3 modification at the <em>CDKN1A</em> locus. Furthermore, METTL3 bound to <em>EZH2</em> mRNA and increased m6A modification on <em>EZH2</em> mRNA, enhancing its stability and promoting EZH2 expression.</div></div><div><h3>Conclusions</h3><div>The upregulation of EZH2 mediated by METTL3 is implicated in the B-cell autoimmune response in pSS. Inhibition of EZH2 presents
目的泽斯特同源物增强子2(EZH2)在促进B细胞活化和分化方面发挥着重要作用。本研究旨在阐明EZH2在原发性斯约格伦综合征(pSS)B细胞自身免疫反应中的作用,并探索抑制EZH2对pSS的治疗潜力:方法:对 pSS 患者外周血中的 B 细胞进行单细胞 RNA 测序分析,以确定 B 细胞亚群中 EZH2 和 METTL3 的异常表达。在多个 B 细胞亚群和 pSS 患者唾液腺(SG)以及三种不同的斯约格伦综合征(SS)小鼠模型中进一步验证了 EZH2 的水平。研究人员进行了相关分析,以探讨 EZH2 的表达与 pSS 患者临床特征之间的关系。在实验性斯约格伦综合征(ESS)小鼠模型中,对抑制 EZH2 后的斯约格伦综合征样症状和抗体产生情况进行了评估。对EZH2抑制后的RNA测序(RNA-seq)和染色质免疫沉淀测序(ChIP-seq)数据进行了生物信息学分析,以确定EZH2在pSS中的靶点。通过 ChIP-qPCR 验证了 H3K27me3 与 CDKN1A 启动子的结合。流式细胞凋亡分析和羧基荧光素琥珀酰亚胺酯(CFSE)测定用于评估 EZH2 抑制剂对 B 细胞凋亡和增殖的影响。此外,还分析了 pSS 患者中 METTL3 的表达及其与疾病活动的相关性。在敲除 METTL3 后检测了 EZH2 的表达。进行了 METTL3-RNA 免疫沉淀(RIP)和放线菌素 D 检测,以确认 METTL3 与 EZH2 mRNA 的直接结合及其对 mRNA 稳定性的影响。进行了 M6A-RIP-qPCR 验证 EZH2 mRNA 上是否存在 m6A 修饰:结果:在 pSS 患者外周血和 SG 中的多个 B 细胞亚群以及三种不同的 SS 动物模型中发现 EZH2 上调。B 细胞中 EZH2 的表达与衡量疾病活动性的 ESSDAI 评分呈正相关。使用EZH2抑制剂治疗后,ESS小鼠的SS样症状减轻,自身抗体产生减少。同样,在 pSS 患者中,METTL3 在 SGs 和外周血 CD19+ B 细胞中的表达增加,也与 ESSDAI 评分呈正相关。随着 METTL3 的敲除,EZH2 的表达减少。从机理上讲,EZH2通过催化CDKN1A位点的H3K27me3修饰,抑制B细胞凋亡,促进B细胞增殖。此外,METTL3与EZH2 mRNA结合,增加了EZH2 mRNA上的m6A修饰,提高了其稳定性,促进了EZH2的表达:结论:METTL3介导的EZH2上调与pSS的B细胞自身免疫反应有关。抑制 EZH2 是一种治疗 pSS 的有效策略。
{"title":"EZH2 promotes B-cell autoimmunity in primary Sjogren's syndrome via METTL3-mediated m6A modification","authors":"Yiying Yang ,&nbsp;Muyuan Li ,&nbsp;Liqing Ding ,&nbsp;Ying Zhang ,&nbsp;Ke Liu ,&nbsp;Meidong Liu ,&nbsp;Yisha Li ,&nbsp;Hui Luo ,&nbsp;Xiaoxia Zuo ,&nbsp;Huali Zhang ,&nbsp;Muyao Guo","doi":"10.1016/j.jaut.2024.103341","DOIUrl":"10.1016/j.jaut.2024.103341","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Objective&lt;/h3&gt;&lt;div&gt;Enhancer of zeste homologue 2 (EZH2) plays an important role in promoting B-cell activation and differentiation. This study aimed to elucidate the role of EZH2 in the B-cell autoimmune response in primary Sjögren's syndrome (pSS) and to explore the therapeutic potential of inhibiting EZH2 in pSS.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Methods&lt;/h3&gt;&lt;div&gt;Single-cell RNA sequencing analysis of B cells in peripheral blood from pSS patients was conducted to identify abnormal expression of EZH2 and METTL3 in B-cell subsets. The levels of EZH2 were further validated across multiple B-cell subsets and the salivary glands (SGs) of pSS patients, as well as three different mouse models of Sjögren's syndrome (SS). Correlation analyses were performed to explore the relationship between the expression of EZH2 and clinical features of pSS patients. Following EZH2 inhibition, SS-like signs and antibody production were assessed in an experimental Sjögren syndrome (ESS) mouse model. RNA sequencing (RNA-seq) and chromatin immunoprecipitation sequencing (ChIP-seq) data post-EZH2 inhibition were bioinformatically analyzed to identify the EZH2 targets in pSS. ChIP-qPCR was performed to validate the binding of H3K27me3 to the &lt;em&gt;CDKN1A&lt;/em&gt; promoter. Flow cytometric apoptosis analysis and Carboxy Fluorescein Succinimidyl Ester (CFSE) assay were used to assess the impact of an EZH2 inhibitor on B-cell apoptosis and proliferation. Additionally, METTL3 expression and its correlation with disease activity were analyzed in pSS patients. EZH2 expression was examined after METTL3 knockdown. METTL3-RNA immunoprecipitation (RIP) and actinomycin D assays were conducted to confirm the direct binding of METTL3 to EZH2 mRNA and its impact on mRNA stability. M6A-RIP-qPCR was performed to validate the presence of m6A modifications on &lt;em&gt;EZH2&lt;/em&gt; mRNA.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Results&lt;/h3&gt;&lt;div&gt;EZH2 was found upregulated in multiple B-cell subsets from the peripheral blood and SGs of pSS patients, as well as in three different animal models of SS. The expression of EZH2 in B cells was positively correlated with the ESSDAI score, which is a measure of disease activity. With treatment of EZH2 inhibitor, SS-like signs alleviated and autoantibody production reduced in ESS mice. Similarly, in pSS patients, METTL3 expression was increased in the SGs and peripheral blood CD19&lt;sup&gt;+&lt;/sup&gt; B cells, also showing a positively correlated with the ESSDAI score. With knockdown of &lt;em&gt;METTL3&lt;/em&gt;, the expression of EZH2 reduced. Mechanistically, EZH2 inhibited B-cell apoptosis and promoted B-cell proliferation by catalyzing H3K27me3 modification at the &lt;em&gt;CDKN1A&lt;/em&gt; locus. Furthermore, METTL3 bound to &lt;em&gt;EZH2&lt;/em&gt; mRNA and increased m6A modification on &lt;em&gt;EZH2&lt;/em&gt; mRNA, enhancing its stability and promoting EZH2 expression.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Conclusions&lt;/h3&gt;&lt;div&gt;The upregulation of EZH2 mediated by METTL3 is implicated in the B-cell autoimmune response in pSS. Inhibition of EZH2 presents","PeriodicalId":15245,"journal":{"name":"Journal of autoimmunity","volume":"149 ","pages":"Article 103341"},"PeriodicalIF":7.9,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142692953","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}
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Journal of autoimmunity
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