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Resolution of epithelial dysfunction in eosinophilic esophagitis is mediated by an HIF-1α-CD73-adenosine signaling axis hif -1α- cd73 -腺苷信号轴介导嗜酸性食管炎上皮功能障碍的解决
IF 11.2 1区 医学 Q1 ALLERGY Pub Date : 2026-03-01 Epub Date: 2025-09-19 DOI: 10.1016/j.jaci.2025.09.006
Shauna K. Kellett MSc , Taylor Crue MPH , Sofia N. Almeida Cruz MSc , Gary E. Markey PhD , Sinéad Ryan PhD , Louise Crowe PhD , Olga Fagan BSc, BM, BS , Niall Conlon PhD, FRCPath , Claire L. Donohoe MB BCh, BAO, BA, MMEd, PhD, FRCSI , Susan McKiernan MB BCh, BAO , Glenn T. Furuta MD , Joanne C. Masterson PhD

Background

Inflammatory hypoxia is induced by eosinophilic inflammation, while a decreased expression in the key hypoxic regulator, hypoxia-inducible transcription factor (hypoxia-inducible factor-1alpha [HIF-1α]), has been shown in patients with eosinophilic esophagitis (EoE), contributing to maladaptive hypoxic responses in the esophageal epithelium. Recent publications have reported attenuated CD73/ecto-5'-nucleotidase expression in patients with EoE, which is a known extracellular adenosine producing ecto-enzyme and a direct HIF-1α target.

Objectives

We sought to check the hypothesis that dysregulated CD73 facilitated epithelial wound healing and barrier dysfunction in EoE and was modulated by HIF-1α and mediated through impaired extracellular adenosine signaling.

Methods

In vitro scratch assays and 3-dimensional air-liquid interface cultures were carried out on EPC2-hTERT cells to evaluate wound healing and barrier responses in the esophageal epithelium. Pharmacological CD73 inhibition (α,β-methylene adenosine-5-diphosphate), adenosine receptor A2B (ADORA2B) activation (BAY60-6583), and HIF-1α stabilization (dimethyloxalylglycine) were also used. In vivo, the L2-IL5OXA, an HIF-1α overexpressing L2-IL5OXA (L2-IL5+/HIF-1A-dPA+/+/K14Cre+)OXA, and ADORA2B agonist-BAY60-6583 (L2-IL5OXABAY) EoE mouse models were used.

Results

Pharmacologic studies demonstrated that CD73 inhibition resulted in defective wound healing responses in scratch assays and decreased epithelial barrier in 3-dimensional air-liquid interface cultures. Activation of downstream ADORA2B signaling improved wound healing responses and barrier functions via restoration of fibronectin (FN1) and occludin (OCLN) expression. In vivo studies in L2-IL5OXA EoE mouse models recapitulated in vitro findings of improved epithelial barrier integrity characterized by increased expression of occludin following ADORA2B agonism and HIF-1α stabilization.

Conclusions

Overall, our study suggests that defective HIF-1α signaling in extended hypoxia is a key driver of CD73 downregulation in EoE, leading to impaired extracellular adenosine signaling, defective wound healing, and barrier dysfunction, establishing the possibility for ADORA2B agonism as a potential novel therapeutic approach for EoE.
背景:炎性缺氧是由嗜酸性粒细胞炎症引起的,而嗜酸性粒细胞性食管炎(EoE)患者的关键缺氧调节因子缺氧诱导转录因子(HIF-1α)表达降低,导致食管上皮缺氧反应不适应。最近的出版物报道了EoE患者中CD73/外泌5′-核苷酸酶的表达减弱,这是一种已知的细胞外腺苷生成外泌酶和HIF-1α的直接靶标。目的:我们假设失调的CD73促进了EoE上皮伤口愈合和屏障功能障碍,并由HIF-1α调节,并通过受损的细胞外腺苷信号传导介导。方法采用体外刮伤法和三维气液界面(3D-ALI)培养EPC2-hTERT细胞,观察食管上皮创面愈合和屏障反应。药理CD73抑制(α,β-亚甲基腺苷-5-二磷酸(APCP)), ADORA2B腺苷受体激活(BAY60-6583)和HIF-1α稳定(DMOG)。在体内,使用过表达L2-IL5OXA (L2-IL5+/HIF-1A-dPA+/+/K14Cre+)OXA和ADORA2B激动剂bay60 -6583 (L2-IL5OXABAY) EoE小鼠模型。结果药理学研究表明,CD73抑制导致划伤试验中伤口愈合反应缺陷,3D-ALI培养中上皮屏障降低。激活下游腺苷A2B受体(ADORA2B)信号通过恢复纤维连接蛋白(FN1)和闭塞蛋白(OCLN)表达改善伤口愈合反应和屏障功能。L2-IL5OXA EoE小鼠模型的体内研究概括了体外上皮屏障完整性改善的发现,其特征是在ADORA2B激动作用和HIF-1α稳定后occludin的表达增加。总的来说,我们的研究表明,延长缺氧时HIF-1α信号缺陷是EoE中CD73下调的关键驱动因素,导致细胞外腺苷信号受损,伤口愈合缺陷和屏障功能障碍,从而建立了ADORA2B激动剂作为EoE潜在的新治疗方法的可能性。
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引用次数: 0
Utilization of the All of Us Research Program in a study of genetics in Yao syndrome “我们所有人”研究计划在姚综合征遗传学研究中的应用
IF 11.2 1区 医学 Q1 ALLERGY Pub Date : 2026-03-01 Epub Date: 2025-11-07 DOI: 10.1016/j.jaci.2025.10.028
Song Wu PhD , Zuoming Deng PhD , Asif Uddin MD , Baozhong Xin PhD , Peter D. Gorevic MD , Qingping Yao MD, PhD

Background

Yao syndrome (OMIM 617321) is a chronic and recurring inflammatory disease linked to specific variants in the nucleotide-binding oligomerization domain containing protein 2 (NOD2) gene.

Objective

This study aimed to further dissect the genetic mechanisms of the disease.

Methods

A total of 405 patients suspected of having systemic autoinflammatory diseases were included. Molecular testing was performed using an autoinflammatory disease gene panel to aid diagnosis. To compare the frequencies of commonly encountered individual and combined NOD2 variants, whole genome sequencing data from the All of Us Research Program, consisting of 128,196 participants of European ancestry, was interrogated.

Results

Commonly encountered NOD2 variants and combinations were compared to the All of Us Research Program genomic data. We found that NOD2 variant IVS8 + 158 (JW1) was significantly more prevalent in the patient population (odds ratio [OR] = 1.32, P = .006). Similarly, NOD2 variants p.Leu1007Profs∗2 and p.Arg703Cys were significantly higher in the patient population (OR = 1.61, P = .018; OR = 2.66, P = .004, respectively). Linkage disequilibrium analysis demonstrated a haplotype configuration for IVS8 + 158 and p.Arg702Trp or IVS8 + 158 (JW1) and p.Leu1007Profs∗2. Additionally, NOD2 IVS8 + 158 (JW1) and p.Val955Ile was found to be significantly more frequent in the patient group (OR = 1.63, P = .038). These findings confirm and further expand the association of these individual and combined NOD2 variants with Yao syndrome.

Conclusion

This large case–control study of population genetics provides valuable insights into the genetic mechanisms of Yao syndrome and has important implications for ordering genetic tests, interpretation of the results, genomic diagnosis, and genetic counseling.
耀综合征(OMIM 617321)是一种慢性和复发性炎症性疾病,与含有核苷酸结合寡聚化结构域的蛋白2 (NOD2)基因的特定变异有关。目的进一步探讨该病的发病机制。方法收集405例疑似全身性自身炎症性疾病患者。使用自身炎症性疾病基因面板进行分子检测以辅助诊断。为了比较常见的个体和组合NOD2变异的频率,研究人员对来自“我们所有人研究计划”的128,196名欧洲血统参与者的全基因组测序数据进行了研究。结果将常见的NOD2变异和组合与我们所有人研究计划的基因组数据进行比较。我们发现NOD2变异IVS8 + 158 (JW1)在患者群体中更为普遍(优势比[OR] = 1.32, P = 0.006)。同样,NOD2变异体p.l u1007profs∗2和p.a g703cys在患者群体中显著升高(OR = 1.61, P = 0.018; OR = 2.66, P = 0.004)。连锁不平衡分析表明,IVS8 + 158和p.a g702trp或IVS8 + 158 (JW1)和p.l u1007profs * 2具有单倍型构型。此外,NOD2 IVS8 + 158 (JW1)和P . val955ile在患者组的发生率显著高于对照组(OR = 1.63, P = 0.038)。这些发现证实并进一步扩展了这些个体和联合NOD2变异与姚综合征的关联。结论该群体遗传学的大型病例对照研究为姚综合征的遗传机制提供了有价值的见解,并对基因检测的排序、结果的解释、基因组诊断和遗传咨询具有重要意义。
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引用次数: 0
Caution in interpreting MRGPRX2 N62S as a disease-driving variant in chronic spontaneous urticaria 在将MRGPRX2 N62S解释为慢性自发性荨麻疹的疾病驱动变异时要谨慎。
IF 11.2 1区 医学 Q1 ALLERGY Pub Date : 2026-03-01 Epub Date: 2025-12-29 DOI: 10.1016/j.jaci.2025.11.013
Margarita Martín PhD , Paola Leonor Quan MD , Laia Ollé PhD , Marina Sabaté-Bresco PhD , Gabriel Gastaminza MD, PhD
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引用次数: 0
Biologics in the treatment of severe asthma in children and adults—updates 2024-2025 治疗儿童和成人严重哮喘的生物制剂-更新2024-2025
IF 11.2 1区 医学 Q1 ALLERGY Pub Date : 2026-03-01 Epub Date: 2026-01-20 DOI: 10.1016/j.jaci.2026.01.002
Courtney L. Gaberino MD , Jason Moraczewski MD , Daniel J. Jackson MD , Leonard B. Bacharier MD
The development of targeted mAbs has transformed the treatment of moderate-to-severe asthma. The main clinical trial outcomes have focused on exacerbation reduction and lung function improvement. In the past few years, there have been many high-quality studies examining pathophysiologic effects of the biologic therapies, giving insight into their downstream impacts. Clinical remission is a growing area of interest, and many studies highlight the utility as well as the limitations of commonly available biomarkers to predict treatment response. This review synthesizes the results of recent clinical trials and related topics focusing on relevant updates to the literature since 2024, highlighting new indications for use, predictors of response, safety data, real-world comparative effectiveness, remission, and mechanistic advances.
靶向单克隆抗体的开发已经改变了中重度哮喘的治疗方法。主要的临床试验结果集中在急性加重减少和肺功能改善上。在过去的几年中,已经有许多高质量的研究检查了生物治疗的病理生理效应,并深入了解了它们的下游影响。临床缓解是一个越来越受关注的领域,许多研究强调了常用的生物标志物在预测治疗反应方面的效用和局限性。本综述综合了近期临床试验的结果和相关主题,重点关注自2024年以来的相关文献更新,强调了新的使用适应症、反应预测因素、安全性数据、现实世界的比较有效性、缓解和机制进展。
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引用次数: 0
Staphylococcus aureus in atopic dermatitis: How a common bacterium exploits and drives disease 特应性皮炎中的金黄色葡萄球菌:一种常见的细菌如何利用和驱动疾病。
IF 11.2 1区 医学 Q1 ALLERGY Pub Date : 2026-03-01 Epub Date: 2026-01-13 DOI: 10.1016/j.jaci.2025.12.1009
Carla Chehadeh BS , Teruaki Nakatsuji PhD , Richard L. Gallo MD, PhD
The role of Staphylococcus aureus in atopic dermatitis (AD) has been extensively studied. Although its role in the pathophysiology of AD was previously controversial, current evidence now shows that it is a major factor promoting the disease and is responsible for significant morbidity. Its influence in AD stems from widespread exposure because S aureus is common on healthy skin and is frequently part of the normal human skin microbiome. In AD, S aureus and the closely related Staphylococcus epidermidis gain a selective growth advantage over most other members of the skin microbiome due to a complex relationship involving the skin’s innate immune system, other members of the microbiome, and skin barrier properties. Disruption in the functioning of these components or changes in their interactions lead to dysbiosis, skin barrier damage, and the progression of skin disease. This review summarizes research findings on these relationships and highlights the interactions and factors that promote S aureus survival on skin and its participation in the pathogenesis of AD.
金黄色葡萄球菌在特应性皮炎(AD)中的作用已被广泛研究。尽管其在阿尔茨海默病病理生理中的作用先前存在争议,但目前的证据表明,它是促进该疾病的主要因素,并且是导致显著发病率的原因。它对AD的影响源于广泛的接触,因为金黄色葡萄球菌在健康皮肤上很常见,并且经常是正常人类皮肤微生物群的一部分。在AD中,金黄色葡萄球菌和密切相关的表皮葡萄球菌比大多数其他皮肤微生物组成员获得了选择性生长优势,这是由于涉及皮肤先天免疫系统、微生物组其他成员和皮肤屏障特性的复杂关系。这些成分功能的破坏或其相互作用的改变可导致生态失调、皮肤屏障损伤和皮肤病的进展。本文综述了这些关系的研究成果,重点介绍了促进金黄色葡萄球菌在皮肤上存活及其参与AD发病的相互作用和因素。
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引用次数: 0
A Special Thank-You to Our Reviewers 特别感谢我们的审稿人
IF 11.2 1区 医学 Q1 ALLERGY Pub Date : 2026-03-01 Epub Date: 2026-02-28 DOI: 10.1016/S0091-6749(26)00064-3
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引用次数: 0
Neutralizing IL-22RA1 improves histologic and molecular alterations associated with atopic dermatitis pathogenesis 中和IL-22RA1可改善与特应性皮炎发病机制相关的组织学和分子改变
IF 11.2 1区 医学 Q1 ALLERGY Pub Date : 2026-03-01 Epub Date: 2025-11-11 DOI: 10.1016/j.jaci.2025.08.033
Sophia Wasserer MD , Thomas Litman PhD , Josephine Hebsgaard PhD , Manja Jargosch PhD , Christina Hillig MSc , Anna Caroline Pilz MD , Natalie Garzorz-Stark MD, PhD , Tilo Biedermann MD , Christophe Blanchetot PhD , Michael Menden PhD , Mette Sidsel Mortensen MSc , Tine Skak-Nielsen PhD , Malene Bertelsen PhD , Birgitte Ursoe PhD , Felix Lauffer MD, PhD , Britta C. Martel PhD , Kilian Eyerich MD, PhD , Stefanie Eyerich PhD

Background

Disease of a subgroup of patients with atopic dermatitis (AD) does not show sufficient improvement with current systemic therapies, highlighting the heterogeneity of the chronic inflammatory skin disease and the need for novel treatments.

Objective

In this study, we investigated the pathogenic contribution of the IL-22/IL-22 receptor (IL-22RA1) axis to AD skin inflammation in in vitro, ex vivo, and in vivo models to evaluate the therapeutic potential of blocking this axis.

Methods

IL22RA1 expression in AD skin was assessed by in situ hybridization. Inhibition of the IL-22/IL-22R signaling cascade was evaluated in a human AD in vitro model (3-D skin equivalents) and a phorbol 12-myristate 13-acetate (aka TPA) mouse model using temtokibart, a humanized antibody directed against IL-22RA1.

Results

IL22RA1 was highly expressed in the epidermis of lesional AD skin versus nonlesional control skin; expression correlated positively with epidermal thickness and negatively with the barrier integrity marker loricrin. IL-22 stimulation in 3-D skin equivalents induced a specific molecular signature associated with lack of terminal differentiation, altered lipid metabolism, and increased immune response. Inhibition of IL-22RA1 with temtokibart showed significant improvements in skin barrier integrity at the histologic and molecular levels. IL-22RA1 inhibition in a skin inflammation mouse model with Zymo, a surrogate murine anti–IL-22RA1 monoclonal antibody for temtokibart, reduced local expression of Cxcl1 and S100a9.

Conclusions

These findings suggest that the IL-22/IL-22RA1 axis functionally contributes to AD pathogenesis. Thus, blocking IL-22RA1 represents a potentially valuable new therapeutic option.
一亚组特应性皮炎(AD)患者的疾病在目前的全身治疗中没有显示出足够的改善,这突出了慢性炎症性皮肤病的异质性和对新治疗方法的需求。目的通过体外、离体和体内模型研究IL-22/IL-22受体(IL-22RA1)轴对AD皮肤炎症的致病作用,以评价阻断该轴的治疗潜力。方法采用原位杂交法检测AD皮肤组织中sil22ra1的表达。使用temtokibart(一种针对IL-22RA1的人源化抗体)在人AD体外模型(3-D皮肤当量)和phorbol 12-肉豆酸13-乙酸酯(又名TPA)小鼠模型中评估了IL-22/IL-22R信号级联的抑制作用。结果sil22ra1在病变AD皮肤表皮中的表达高于非病变对照皮肤;表达与表皮厚度呈正相关,与屏障完整性标记物氯丙烯呈负相关。IL-22在3-D皮肤等效物中的刺激诱导了与缺乏终末分化、脂质代谢改变和免疫反应增加相关的特定分子特征。替托基巴特对IL-22RA1的抑制在组织学和分子水平上显示了皮肤屏障完整性的显著改善。Zymo(替托基巴特小鼠抗IL-22RA1单克隆抗体)抑制皮肤炎症小鼠模型中的IL-22RA1,降低了Cxcl1和S100a9的局部表达。结论IL-22/IL-22RA1轴在AD发病过程中起一定的功能作用。因此,阻断IL-22RA1代表了一种潜在的有价值的新治疗选择。
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引用次数: 0
Autonomic dysfunction and vasoregulation in long COVID-19 are linked to anti-GPCR autoantibodies Long COVID-19的自主神经功能障碍和血管调节与抗gpcr自身抗体有关
IF 11.2 1区 医学 Q1 ALLERGY Pub Date : 2026-03-01 Epub Date: 2025-11-20 DOI: 10.1016/j.jaci.2025.10.034
Boris Schmitz PhD , René Garbsch PhD , Hendrik Schäfer MSc , Christian Bär PhD , Shambhabi Chatterjee PhD , Gabriela Riemekasten MD , Kai Schulze-Forster PhD , Harald Heidecke PhD , Christoph Schultheiß PhD , Mascha Binder MD , Frank C. Mooren MD

Background

Severe acute respiratory syndrome coronavirus 2–triggered autoantibodies (AABs) targeting G protein–coupled receptors have been suggested to contribute to the post–acute sequelae of coronavirus disease 2019 (or post–COVID-19 syndrome [PCS]).

Objective

We sought to characterize AABs involved in autonomic dysfunction such as rhythm control and vasoregulation in patients with PCS and profile the peripheral B- and T-cell receptor (BCR/TCR) architecture to identify immunogenetic imprints of autoimmunity.

Methods

Anti–G protein–coupled receptor AABs were characterized in patients with PCS with known alteration in autonomic nervous system functions assessed by heart rate variability. Adaptive immune receptor repertoire sequencing was used to profile peripheral BCR and TCR architecture. Patients with COVID-19 with severe or moderate acute disease, after recovery, and prepandemic healthy individuals served as controls. Cardio- and vasoactive effects of AABs were analyzed using 24-hour and exercise test blood pressure measurements. The direct effect of AABs on electromechanical coupling was tested in human-induced pluripotent stem cell cardiomyocytes.

Results

AABs including autoantibody against angiotensin II receptor type 1/2, autoantibody against adrenoceptor beta 1/2, autoantibody against muscarinic acetylcholine receptor M1/M3, and autoantibody against C-X-C motif chemokine receptor 3 (CXCR3ab) were associated with heart rate variability alterations. Analysis of the broad BCR repertoire metrics revealed high similarity between patients with PCS and healthy controls for clonality and diversity measures. The level of somatic hypermutation as proxy for antigen experience was equal to that of healthy controls. Elevated CXCR3ab levels were linked to higher 24-hour mean arterial pressure, whereas patients with elevated autoantibody against muscarinic acetylcholine receptor M1 and CXCR3ab levels showed higher blood pressure during stress tests. AABs had no effect on beat frequency and amplitude of cardiomyocyte contraction in vitro.

Conclusions

These findings suggest that AABs play a modulatory role in sympathetic nervous system–mediated regulation of cardiac rhythm and vascular function in PCS. AAB levels did not correlate with BCR and TCR repertoire metrics or T-cell receptor beta variable gene usage.
研究表明,针对G蛋白偶联受体的严重急性呼吸综合征冠状病毒2触发的自身抗体(AABs)与2019冠状病毒病急性后后遗症(或后covid -19综合征[PCS])有关。目的:研究参与自主神经功能障碍(如PCS患者的节律控制和血管调节)的自身抗体特征,并分析外周B细胞和t细胞受体(BCR/TCR)结构,以识别自身免疫的免疫遗传印记。方法采用心率变异性评价自主神经系统功能改变的PCS患者的抗g蛋白偶联受体AABs。适应性免疫受体库测序用于分析外周BCR和TCR结构。以COVID-19重症或中度急性疾病患者、康复后和大流行前健康个体为对照。通过24小时血压测量和运动血压测试来分析自身抗体的心血管和血管活性作用。在人诱导的多能干细胞心肌细胞中检测了单克隆抗体对机电耦合的直接影响。结果抗血管紧张素II受体1/2型自身抗体、抗肾上腺素能素β 1/2型自身抗体、抗毒蕈碱乙酰胆碱受体M1/M3自身抗体和抗C-X-C基序趋化因子受体3自身抗体(CXCR3ab)与心率变异性改变相关。对广泛的BCR全库指标的分析显示,PCS患者与健康对照者在克隆性和多样性指标上高度相似。体细胞超突变水平作为抗原经历的代表与健康对照相同。升高的CXCR3ab水平与较高的24小时平均动脉压有关,而抗毒毒碱乙酰胆碱受体M1和CXCR3ab水平升高的患者在压力测试中表现出较高的血压。自身抗体对体外心肌细胞的搏动频率和收缩幅度无影响。结论单克隆抗体参与了交感神经系统对PCS患者心律和血管功能的调节。AAB水平与BCR和TCR指标或t细胞受体β可变基因使用无关。
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引用次数: 0
News beyond our pages 报纸之外的新闻
IF 11.2 1区 医学 Q1 ALLERGY Pub Date : 2026-03-01 Epub Date: 2026-02-28 DOI: 10.1016/j.jaci.2026.01.003
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引用次数: 0
NOX2 deficiency enhances priming and activation of the NLRP3 inflammasome NOX2缺乏增强了NLRP3炎症小体的启动和激活。
IF 11.2 1区 医学 Q1 ALLERGY Pub Date : 2026-03-01 Epub Date: 2023-10-05 DOI: 10.1016/j.jaci.2023.09.030
Blandine Monjarret MSc , Sara Shour MSc , Daniela Stanga PhD , Aissa Benyoucef PhD , Emilie Heckel PhD , Lorie Marchitto MSc , Jennifer W. Leiding MD , Guilhem Cros MD , Isabel Fernandez PhD , Jean-Sebastien Joyal MD, PhD , Fabien Touzot MD, PhD

Background

Nicotinamide adenine dinucleotide phosphate oxidase complex 2 (NOX2) deficiency, or chronic granulomatous disease (CGD), is an inborn error of immunity associated with increased susceptibility to infection and inflammatory manifestations. The pathophysiologic mechanism leading to the increased inflammatory response in CGD remains elusive.

Objective

We investigated the pathophysiologic mechanisms leading to NOD-like receptor family pyrin domain containing 3 (NLRP3) inflammasome activation in NOX2 deficiency.

Methods

We used NOX2-deficient human primary and CRISPR-engineered macrophages to show that NOX2 deficiency enhances the inflammatory response mainly by modulating the 2 steps of NLRP3 inflammasome activation: its transcriptional priming and its posttranslational triggering.

Results

At the transcriptional level, NOX2-deficient phagocytes display increased priming of the NLRP3 inflammasome, as evidenced by increased transcription of NLRP3 and IL-1β through an IL-1β–dependent stimulation of the nuclear factor kappa–light-chain enhancer of activated B cells (aka NF-κB) pathway. At the posttranslational level, the absence of NOX2 triggers the NLRP3 inflammasome activation by increased K+ efflux and excessive release of mitochondrial DNA due to mitochondrial damage. Furthermore, NLRP3-driven pyroptosis in NOX2-deficient phagocytes further enhances NLRP3 activation by increasing K+ efflux.

Conclusion

Our results unveil the role of NOX2 as a repressor of the inflammatory response at both transcriptional and posttranslational levels and pave the way for a more targeted approach to treating CGD patients with inflammatory manifestations.
背景:NOX2缺乏症或慢性肉芽肿性疾病(CGD)是一种先天性免疫错误,与感染和炎症表现的易感性增加有关。导致CGD炎症反应增加的病理生理机制仍然难以捉摸。目的:探讨NOX2缺乏症NLRP3炎症小体激活的病理生理机制。方法:我们使用NOX2缺乏的人类原代巨噬细胞和CRISPR工程巨噬细胞来表明,NOX2缺乏主要通过调节NLRP3炎症小体激活的两个步骤来增强炎症反应:其转录启动和翻译后触发。结果:在转录水平上,NOX2缺陷吞噬细胞对NLRP3炎症小体的启动增加,这可以通过IL-1β依赖性刺激NF-κB途径增加NLRP3和IL-1β的转录来证明。在翻译后水平上,NOX2的缺失通过K+外排增加和线粒体损伤导致的线粒体DNA过度释放触发NLRP3炎症小体激活。此外,NOX2缺陷吞噬细胞中NLRP3驱动的pyroptosis通过增加K+流出进一步增强NLRP3的激活。结论:我们的研究结果揭示了NOX2在转录和翻译后水平上作为炎症反应阻遏物的作用,并为治疗有炎症表现的CGD患者的更有针对性的方法铺平了道路。
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引用次数: 0
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Journal of Allergy and Clinical Immunology
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