Journal of Experimental Medicine最新文献

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Emerging in vivo tools for ILC2 research. 新兴的ILC2体内研究工具。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2025-07-07 Epub Date: 2025-05-29 DOI: 10.1084/jem.20250883
Timotheus Y F Halim
{"title":"Emerging in vivo tools for ILC2 research.","authors":"Timotheus Y F Halim","doi":"10.1084/jem.20250883","DOIUrl":"10.1084/jem.20250883","url":null,"abstract":"<p><p>ILC2 are critical regulators of inflammation and tissue homeostasis in diverse anatomical sites. ILC2-targeted mouse models have underpinned this emerging field of research. In this issue of JEM, (Kabil et al. https://doi.org/10.1084/jem.20241671) developed a novel Il17rbCreERT2.eGFP mouse to study the role of Rora in mature ILC2.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"222 7","pages":""},"PeriodicalIF":12.6,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12121500/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144174116","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
Sympathetic axonogenesis promotes adenoid cystic carcinoma progression. 交感轴突发生促进腺样囊性癌进展。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2025-07-07 Epub Date: 2025-04-24 DOI: 10.1084/jem.20242250
Chun-Hao Chen, Boris Reva, Nora Katabi, Avishai Wizel, Hongbo Xu, Alan L Ho, Luc G T Morris, Richard L Bakst, Anuraag S Parikh, Yotam Drier, Sylvie Deborde, Richard J Wong
{"title":"Sympathetic axonogenesis promotes adenoid cystic carcinoma progression.","authors":"Chun-Hao Chen, Boris Reva, Nora Katabi, Avishai Wizel, Hongbo Xu, Alan L Ho, Luc G T Morris, Richard L Bakst, Anuraag S Parikh, Yotam Drier, Sylvie Deborde, Richard J Wong","doi":"10.1084/jem.20242250","DOIUrl":"https://doi.org/10.1084/jem.20242250","url":null,"abstract":"<p><p>Nerves are integral to the adenoid cystic carcinoma (ACC) microenvironment. The strong association of ACC with perineural invasion (PNI) is considered a hallmark of this disease. In human salivary ACC, we identify intratumoral, small-caliber, disorganized sympathetic nerves not observed in other salivary neoplasms. Norepinephrine or sympathetic ganglia explants enhance ACC proliferation in vitro. Two novel orthotopic ACC patient-derived xenograft (PDX) models recapitulate ACC morphology and demonstrate sympathetic innervation. Pharmacologic or surgical blockade of sympathetic nerves decreases ACC PDX growth. Bulk RNA sequencing of salivary ACC reveals correlations between noradrenergic nerve development signatures and worse patient survival. Metastatic ACC foci exhibit lower nerve signature gene expression levels than primary ACC. Sympathetic innervation in ACC is distinct from PNI and reflects tumor axonogenesis driven by noradrenergic neural development programs. These programs support ACC progression, are associated with poor prognosis, and may be inhibited as a therapeutic strategy.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"222 7","pages":""},"PeriodicalIF":12.6,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12020745/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143971326","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
Vaccination against influenza viruses annually: Renewing or narrowing the protective shield? 每年接种流感病毒疫苗:延长或缩小防护盾?
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2025-07-07 Epub Date: 2025-04-24 DOI: 10.1084/jem.20241283
Hanover C Matz, Ali H Ellebedy
{"title":"Vaccination against influenza viruses annually: Renewing or narrowing the protective shield?","authors":"Hanover C Matz, Ali H Ellebedy","doi":"10.1084/jem.20241283","DOIUrl":"https://doi.org/10.1084/jem.20241283","url":null,"abstract":"<p><p>Annual vaccines are recommended for the seasonal influenza virus. While yearly updates to the vaccine are necessary due to the constant evolution of influenza viruses, some studies have suggested repeat vaccination may result in a reduction in vaccine effectiveness in subsequent years. This review examines the available evidence that repeated annual influenza virus vaccination may have effects on future vaccine responses, and it synthesizes the available data with studies that may indicate potential immunological mechanisms underlying these effects. The goal is to examine the available literature to determine whether these mechanisms can be subverted to improve seasonal influenza virus vaccine efficacy.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"222 7","pages":""},"PeriodicalIF":12.6,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12020744/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144022059","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
Functional targeting of ILC2s and ILC3s reveals selective roles in intestinal fibrosis and homeostasis. ILC2s和ILC3s的功能靶向揭示了在肠道纤维化和体内平衡中的选择性作用。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2025-07-07 Epub Date: 2025-05-28 DOI: 10.1084/jem.20241671
Ahmed Kabil, Natalia Nayyar, Chengxi Xu, Julyanne Brassard, Lesley A Hill, Samuel B Shin, Sameeksha Chopra, Bernard Lo, Yicong Li, Mya Bal, Marine Theret, Fabio M V Rossi, T Michael Underhill, Michael R Hughes, Kelly M McNagny
{"title":"Functional targeting of ILC2s and ILC3s reveals selective roles in intestinal fibrosis and homeostasis.","authors":"Ahmed Kabil, Natalia Nayyar, Chengxi Xu, Julyanne Brassard, Lesley A Hill, Samuel B Shin, Sameeksha Chopra, Bernard Lo, Yicong Li, Mya Bal, Marine Theret, Fabio M V Rossi, T Michael Underhill, Michael R Hughes, Kelly M McNagny","doi":"10.1084/jem.20241671","DOIUrl":"10.1084/jem.20241671","url":null,"abstract":"<p><p>Innate lymphoid cells (ILCs) are long-lived, tissue-resident cell analogs to T helper subsets that lack antigen-specific receptors. Understanding the roles of specific ILCs in chronic inflammation and fibrosis has been limited by inadequate tools for selective targeting. Here, we used Il17rb-CreERT2-eGFP and Rorc-Cre strains to selectively delete RORα in ILC2s and ILC3/Th17 cells, respectively. RORα deletion in ILC2s caused significant loss of gastrointestinal ILC2s, increased ILC3 abundance, elevated Th17-type responses, and heightened susceptibility to Crohn's disease-like fibrosis. Conversely, RORα deletion in ILC3/Th17 cells reduced IL-17 production, protecting against fibrosis. Using isolithocholic acid (isoLCA), a microbial secondary bile acid and RORγt inverse agonist, we confirmed the role of ILC3s/Th17 cells in fibrosis. In RORγt reporter and Th17-deficient Rag1-/- mice, isoLCA reduced IL-17 production by ILC3s and attenuated intestinal fibrosis by dampening RORγt-dependent ILC3/Th17 responses. These findings reveal a novel interplay between ILC2s and ILC3s in gut homeostasis and demonstrate the therapeutic potential of targeting RORγt in ILC3s as a strategy for preventing fibrosis.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"222 7","pages":""},"PeriodicalIF":12.6,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12118370/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144159636","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
Prenatally derived macrophages support choroidal health and decline in age-related macular degeneration. 产前来源的巨噬细胞支持脉络膜健康和年龄相关性黄斑变性的下降。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2025-07-07 Epub Date: 2025-04-22 DOI: 10.1084/jem.20242007
Seth D Fortmann, Blake F Frey, Robert F Rosencrans, Yvonne Adu-Rutledge, Edgar Ready V, Kameron V Kilchrist, Robert S Welner, Michael E Boulton, Daniel R Saban, Maria B Grant
{"title":"Prenatally derived macrophages support choroidal health and decline in age-related macular degeneration.","authors":"Seth D Fortmann, Blake F Frey, Robert F Rosencrans, Yvonne Adu-Rutledge, Edgar Ready V, Kameron V Kilchrist, Robert S Welner, Michael E Boulton, Daniel R Saban, Maria B Grant","doi":"10.1084/jem.20242007","DOIUrl":"https://doi.org/10.1084/jem.20242007","url":null,"abstract":"<p><p>Hallmark findings in age-related macular degeneration (AMD) include the accumulation of extracellular lipid and vasodegeneration of the choriocapillaris. Choroidal inflammation has long been associated with AMD, but little is known about the immune landscape of the human choroid. Using 3D multiplex immunofluorescence, single-cell RNA sequencing, and flow cytometry, we unravel the cellular composition and spatial organization of the human choroid and the immune cells within it. We identify two populations of choroidal macrophages with distinct FOLR2 expression that account for the majority of myeloid cells. FOLR2+ macrophages predominate in the nondiseased eye, express lipid-handling machinery, uptake lipoprotein particles, and contain high amounts of lipid. In AMD, FOLR2+ macrophages are decreased in number and exhibit dysfunctional lipoprotein metabolism. In mice, FOLR2+ macrophages are negative for the postnatal fate-reporter Ms4a3, and their depletion causes an accelerated AMD-like phenotype. Our results show that prenatally derived resident macrophages decline in AMD and are implicated in multiple hallmark functions known to be compromised in the disease.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"222 7","pages":""},"PeriodicalIF":12.6,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12013653/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143968753","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
Enhanced TLR7-dependent production of type I interferon by pDCs underlies pandemic chilblains. pDCs增强tlr7依赖性I型干扰素的产生是大流行性冻疮的基础。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2025-07-07 Epub Date: 2025-04-14 DOI: 10.1084/jem.20231467
Fanny Saidoune, Danyel Lee, Jeremy Di Domizio, Corentin Le Floc'h, Raphael Jenelten, Jérémie Le Pen, Vincent Bondet, Ana Joncic, Marie-Anne Morren, Vivien Béziat, Shen-Ying Zhang, Emmanuelle Jouanguy, Darragh Duffy, Charles M Rice, Curdin Conrad, Jacques Fellay, Jean-Laurent Casanova, Michel Gilliet, Ahmad Yatim
{"title":"Enhanced TLR7-dependent production of type I interferon by pDCs underlies pandemic chilblains.","authors":"Fanny Saidoune, Danyel Lee, Jeremy Di Domizio, Corentin Le Floc'h, Raphael Jenelten, Jérémie Le Pen, Vincent Bondet, Ana Joncic, Marie-Anne Morren, Vivien Béziat, Shen-Ying Zhang, Emmanuelle Jouanguy, Darragh Duffy, Charles M Rice, Curdin Conrad, Jacques Fellay, Jean-Laurent Casanova, Michel Gilliet, Ahmad Yatim","doi":"10.1084/jem.20231467","DOIUrl":"https://doi.org/10.1084/jem.20231467","url":null,"abstract":"<p><p>Outbreaks of chilblains were reported during the COVID-19 pandemic. Given the essential role of type I interferon (I-IFN) in protective immunity against SARS-CoV-2 and the association of chilblains with inherited type I interferonopathies, we hypothesized that excessive I-IFN responses to SARS-CoV-2 might underlie the occurrence of chilblains in this context. We identified a transient I-IFN signature in chilblain lesions, accompanied by an acral infiltration of activated plasmacytoid dendritic cells (pDCs). Patients with chilblains were otherwise asymptomatic or had mild disease without seroconversion. Their leukocytes produced abnormally high levels of I-IFN upon TLR7 stimulation with agonists or ssRNA viruses-particularly SARS-CoV-2-but not with DNA agonists of TLR9 or the dsDNA virus HSV-1. Moreover, the patients' pDCs displayed cell-intrinsic hyperresponsiveness to TLR7 stimulation regardless of TLR7 levels. Inherited TLR7 or I-IFN deficiency confers a predisposition to life-threatening COVID-19. Conversely, our findings suggest that enhanced TLR7 activity in predisposed individuals could confer innate, pDC-mediated, sterilizing immunity to SARS-CoV-2 infection, with I-IFN-driven chilblains as a trade-off.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"222 7","pages":""},"PeriodicalIF":12.6,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11995862/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144002735","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
Microglia and CD8+ T cell activation precede neuronal loss in a murine model of spastic paraplegia 15. 小胶质细胞和CD8+ T细胞激活在小鼠痉挛性截瘫模型中的神经元丢失之前15。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2025-07-07 Epub Date: 2025-04-23 DOI: 10.1084/jem.20232357
Aleksej Frolov, Hao Huang, Dagmar Schütz, Maren Köhne, Nelli Blank-Stein, Collins Osei-Sarpong, Maren Büttner, Tarek Elmzzahi, Mukhran Khundadze, Marina Zahid, Michael Reuter, Matthias Becker, Elena De Domenico, Lorenzo Bonaguro, Axel Kallies, Helen Morrison, Christian A Hübner, Kristian Händler, Ralf Stumm, Elvira Mass, Marc D Beyer
{"title":"Microglia and CD8+ T cell activation precede neuronal loss in a murine model of spastic paraplegia 15.","authors":"Aleksej Frolov, Hao Huang, Dagmar Schütz, Maren Köhne, Nelli Blank-Stein, Collins Osei-Sarpong, Maren Büttner, Tarek Elmzzahi, Mukhran Khundadze, Marina Zahid, Michael Reuter, Matthias Becker, Elena De Domenico, Lorenzo Bonaguro, Axel Kallies, Helen Morrison, Christian A Hübner, Kristian Händler, Ralf Stumm, Elvira Mass, Marc D Beyer","doi":"10.1084/jem.20232357","DOIUrl":"https://doi.org/10.1084/jem.20232357","url":null,"abstract":"<p><p>In central nervous system (CNS) diseases characterized by late-onset neurodegeneration, the interplay between innate and adaptive immune responses remains poorly understood. This knowledge gap is exacerbated by the prolonged protracted disease course as it complicates the delineation of brain-resident and infiltrating cells. Here, we conducted comprehensive profiling of innate and adaptive immune cells in a murine model of spastic paraplegia 15 (SPG15), a complicated form of hereditary spastic paraplegia. Using fate-mapping of bone marrow-derived cells, we identified microgliosis accompanied by infiltration and local expansion of T cells in the CNS of Spg15-/- mice. Single-cell analysis revealed an expansion of disease-associated microglia (DAM) and effector CD8+ T cells prior to neuronal loss. Analysis of potential cell-cell communication pathways suggested bidirectional interactions between DAM and effector CD8+ T cells, potentially contributing to disease progression in Spg15-/- mice. In summary, we identified a shift in microglial phenotypes associated with the recruitment and expansion of T cells as a new characteristic of Spg15-driven neuropathology.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"222 7","pages":""},"PeriodicalIF":12.6,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12017274/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143994661","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
Role of PRC2 in the stochastic expression of Aire target genes and development of mimetic cells in the thymus. PRC2在胸腺Aire靶基因的随机表达和模拟细胞发育中的作用。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2025-07-07 Epub Date: 2025-04-17 DOI: 10.1084/jem.20240817
Minoru Matsumoto, Masaki Yoshida, Takeshi Oya, Koichi Tsuneyama, Mitsuru Matsumoto, Hideyuki Yoshida
{"title":"Role of PRC2 in the stochastic expression of Aire target genes and development of mimetic cells in the thymus.","authors":"Minoru Matsumoto, Masaki Yoshida, Takeshi Oya, Koichi Tsuneyama, Mitsuru Matsumoto, Hideyuki Yoshida","doi":"10.1084/jem.20240817","DOIUrl":"https://doi.org/10.1084/jem.20240817","url":null,"abstract":"<p><p>The transcriptional targets of Aire and the mechanisms controlling their expression in medullary thymic epithelial cells (mTECs) need to be clarified to understand Aire's tolerogenic function. By using a multi-omics single-cell approach coupled with deep scRNA-seq, we examined how Aire controls the transcription of a wide variety of genes in a small fraction of Aire-expressing cells. We found that chromatin repression by PRC2 is an important step for Aire to achieve stochastic gene expression. Aire unleashed the silenced chromatin configuration caused by PRC2, thereby increasing the expression of its functional targets. Besides this preconditioning for Aire's gene induction, we demonstrated that PRC2 also controls the composition of mTECs that mimic the developmental trait of peripheral tissues, i.e., mimetic cells. Of note, this action of PRC2 was independent of Aire and it was more apparent than Aire. Thus, our study uncovered the essential role of polycomb complex for Aire-mediated promiscuous gene expression and the development of mimetic cells.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"222 7","pages":""},"PeriodicalIF":12.6,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12005117/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143985788","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
Oligodendrocyte-derived IL-33 regulates self-reactive CD8+ T cells in CNS autoimmunity. 少突胶质细胞来源的IL-33在中枢神经系统自身免疫中调节自身反应性CD8+ T细胞。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2025-07-07 Epub Date: 2025-04-14 DOI: 10.1084/jem.20241188
Nicolas Fonta, Nicolas Page, Bogna Klimek, Margot Piccinno, Giovanni Di Liberto, Sylvain Lemeille, Mario Kreutzfeldt, Anna Lena Kastner, Yusuf I Ertuna, Ilena Vincenti, Ingrid Wagner, Daniel D Pinschewer, Doron Merkler
{"title":"Oligodendrocyte-derived IL-33 regulates self-reactive CD8+ T cells in CNS autoimmunity.","authors":"Nicolas Fonta, Nicolas Page, Bogna Klimek, Margot Piccinno, Giovanni Di Liberto, Sylvain Lemeille, Mario Kreutzfeldt, Anna Lena Kastner, Yusuf I Ertuna, Ilena Vincenti, Ingrid Wagner, Daniel D Pinschewer, Doron Merkler","doi":"10.1084/jem.20241188","DOIUrl":"https://doi.org/10.1084/jem.20241188","url":null,"abstract":"<p><p>In chronic inflammatory disorders of the central nervous system (CNS), tissue-resident self-reactive T cells perpetuate disease. The specific tissue factors governing the persistence and continuous differentiation of these cells remain undefined but could represent attractive therapeutic targets. In a model of chronic CNS autoimmunity, we find that oligodendrocyte-derived IL-33, an alarmin, is key for locally regulating the pathogenicity of self-reactive CD8+ T cells. The selective ablation of IL-33 from neo-self-antigen-expressing oligodendrocytes mitigates CNS disease. In this context, fewer self-reactive CD8+ T cells persist in the inflamed CNS, and the remaining cells are impaired in generating TCF-1low effector cells. Importantly, interventional IL-33 blockade by locally administered somatic gene therapy reduces T cell infiltrates and improves the disease course. Our study identifies oligodendrocyte-derived IL-33 as a druggable tissue factor regulating the differentiation and survival of self-reactive CD8+ T cells in the inflamed CNS. This finding introduces tissue factors as a novel category of immune targets for treating chronic CNS autoimmune diseases.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"222 7","pages":""},"PeriodicalIF":12.6,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11995930/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144024202","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
Impaired Aire-dependent IFN signaling in the thymus precedes the protective autoantibodies to IFNα. 胸腺中空气依赖性IFN信号的受损先于对IFNα的保护性自身抗体。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2025-07-07 Epub Date: 2025-04-30 DOI: 10.1084/jem.20241403
Artur Stoljar, Maksym Zarodniuk, Rudolf Bichele, Elise Helene Armulik, Uku Haljasorg, Romain Humeau, Marine Besnard, Liis Haljasmägi, Liina Tserel, Merili Peltser, Ahto Salumets, Eliisa Kekäläinen, Kai Kisand, Carole Guillonneau, Martti Laan, Pärt Peterson
{"title":"Impaired Aire-dependent IFN signaling in the thymus precedes the protective autoantibodies to IFNα.","authors":"Artur Stoljar, Maksym Zarodniuk, Rudolf Bichele, Elise Helene Armulik, Uku Haljasorg, Romain Humeau, Marine Besnard, Liis Haljasmägi, Liina Tserel, Merili Peltser, Ahto Salumets, Eliisa Kekäläinen, Kai Kisand, Carole Guillonneau, Martti Laan, Pärt Peterson","doi":"10.1084/jem.20241403","DOIUrl":"https://doi.org/10.1084/jem.20241403","url":null,"abstract":"<p><p>Recent studies have highlighted the role of the thymus in maintaining immune tolerance to type 1 interferons (T1 IFNs). Individuals with thymic abnormalities, such as autoimmune regulator (AIRE) gene mutations, frequently develop neutralizing autoantibodies to interferon-alpha (IFNα). Unlike mice, Aire-deficient rats develop robust autoantibodies to IFNα. Using this rat model, we show that Aire regulates the thymic expression of interferon-stimulated genes (ISGs), which occurs before developing anti-IFNα autoantibodies. In the periphery, we observed a widespread downregulation of ISGs across immune cells and reduced activation of natural killer (NK) cells. Furthermore, the presence of anti-IFNα autoantibodies correlated with reduced peripheral tissue inflammation, suggesting their role in dampening T1 IFN signaling and minimizing tissue infiltration. Our findings reveal that Aire-mediated regulation of thymic T1 IFN signaling is linked to the production of protective anti-IFNα autoantibodies, which inversely correlate with autoimmune pathology in peripheral tissues.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"222 7","pages":""},"PeriodicalIF":12.6,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12042843/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144003363","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
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