Pub Date : 2024-08-16DOI: 10.1126/sciimmunol.ade7530
Leandro P. Araujo, Madeline Edwards, Koichiro Irie, Yiming Huang, Yoshinaga Kawano, Alexander Tran, Simona De Michele, Govind Bhagat, Harris H. Wang, Ivaylo I. Ivanov
How group 3 innate lymphoid cells (ILC3s) regulate mucosal protection in the presence of T cells remains poorly understood. Here, we examined ILC3 function in intestinal immunity using ILC3-deficient mice that maintain endogenous T cells, T helper 17 (TH17) cells, and secondary lymphoid organs. ILC3s were dispensable for generation of TH17 and TH22 cell responses to commensal and pathogenic bacteria, and absence of ILC3s did not affect IL-22 production by CD4 T cells before or during infection. However, despite the presence of IL-22–producing T cells, ILC3s and ILC3-derived IL-22 were required for maintaining homeostatic functions of the intestinal epithelium. T cell–sufficient, ILC3-deficient mice were capable of pathogen clearance and survived infection with a low dose of Citrobacter rodentium. However, ILC3s promoted pathogen tolerance at early time points of infection by activating tissue-protective immune pathways. Consequently, ILC3s were indispensable for survival after high-dose infection. Our results demonstrate a context-dependent role for ILC3s in immune-sufficient animals and provide a blueprint for uncoupling of ILC3 and TH17 cell functions.
{"title":"Context-dependent role of group 3 innate lymphoid cells in mucosal protection","authors":"Leandro P. Araujo, Madeline Edwards, Koichiro Irie, Yiming Huang, Yoshinaga Kawano, Alexander Tran, Simona De Michele, Govind Bhagat, Harris H. Wang, Ivaylo I. Ivanov","doi":"10.1126/sciimmunol.ade7530","DOIUrl":"10.1126/sciimmunol.ade7530","url":null,"abstract":"<div >How group 3 innate lymphoid cells (ILC3s) regulate mucosal protection in the presence of T cells remains poorly understood. Here, we examined ILC3 function in intestinal immunity using ILC3-deficient mice that maintain endogenous T cells, T helper 17 (T<sub>H</sub>17) cells, and secondary lymphoid organs. ILC3s were dispensable for generation of T<sub>H</sub>17 and T<sub>H</sub>22 cell responses to commensal and pathogenic bacteria, and absence of ILC3s did not affect IL-22 production by CD4 T cells before or during infection. However, despite the presence of IL-22–producing T cells, ILC3s and ILC3-derived IL-22 were required for maintaining homeostatic functions of the intestinal epithelium. T cell–sufficient, ILC3-deficient mice were capable of pathogen clearance and survived infection with a low dose of <i>Citrobacter rodentium</i>. However, ILC3s promoted pathogen tolerance at early time points of infection by activating tissue-protective immune pathways. Consequently, ILC3s were indispensable for survival after high-dose infection. Our results demonstrate a context-dependent role for ILC3s in immune-sufficient animals and provide a blueprint for uncoupling of ILC3 and T<sub>H</sub>17 cell functions.</div>","PeriodicalId":21734,"journal":{"name":"Science Immunology","volume":"9 98","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141992387","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}
Pub Date : 2024-08-16DOI: 10.1126/sciimmunol.adh0368
Andrew R. Patterson, Gabriel A. Needle, Ayaka Sugiura, Erin Q. Jennings, Channing Chi, KayLee K. Steiner, Emilie L. Fisher, Gabriella L. Robertson, Caroline Bodnya, Janet G. Markle, Ryan D. Sheldon, Russell G. Jones, Vivian Gama, Jeffrey C. Rathmell
Inborn errors of metabolism (IEMs) and immunity (IEIs) are Mendelian diseases in which complex phenotypes and patient rarity have limited clinical understanding. Whereas few genes have been annotated as contributing to both IEMs and IEIs, immunometabolic demands suggested greater functional overlap. Here, CRISPR screens tested IEM genes for immunologic roles and IEI genes for metabolic effects and found considerable previously unappreciated crossover. Analysis of IEMs showed that N-linked glycosylation and the hexosamine pathway enzyme Gfpt1 are critical for T cell expansion and function. Further, T helper (TH1) cells synthesized uridine diphosphate N-acetylglucosamine more rapidly and were more impaired by Gfpt1 deficiency than TH17 cells. Screening IEI genes found that Bcl11b promotes the CD4 T cell mitochondrial activity and Mcl1 expression necessary to prevent metabolic stress. Thus, a high degree of functional overlap exists between IEM and IEI genes, and immunometabolic mechanisms may underlie a previously underappreciated intersection of these disorders.
先天性代谢错误（IEMs）和免疫（IEIs）是孟德尔疾病，其复杂的表型和患者的罕见性限制了临床了解。虽然很少有基因被注释为对 IEMs 和 IEIs 都有影响，但免疫代谢需求表明它们在功能上有更大的重叠。在这里，CRISPR 筛选测试了 IEM 基因的免疫学作用和 IEI 基因的代谢作用，发现了大量以前未曾注意到的交叉。对 IEM 的分析表明，N-连接的糖基化和六聚糖途径酶 Gfpt1 对 T 细胞的扩增和功能至关重要。此外，与 T H 17 细胞相比，T 辅助细胞（T H 1）合成尿苷二磷酸 N - 乙酰葡糖胺的速度更快，而且 Gfpt1 缺乏对其损害更大。对 IEI 基因的筛选发现，Bcl11b 可促进 CD4 T 细胞线粒体活性和 Mcl1 的表达，这是防止代谢压力所必需的。因此，IEM 和 IEI 基因之间存在着高度的功能重叠，免疫代谢机制可能是以前未被重视的这些疾病交叉的基础。
{"title":"Functional overlap of inborn errors of immunity and metabolism genes defines T cell metabolic vulnerabilities","authors":"Andrew R. Patterson, Gabriel A. Needle, Ayaka Sugiura, Erin Q. Jennings, Channing Chi, KayLee K. Steiner, Emilie L. Fisher, Gabriella L. Robertson, Caroline Bodnya, Janet G. Markle, Ryan D. Sheldon, Russell G. Jones, Vivian Gama, Jeffrey C. Rathmell","doi":"10.1126/sciimmunol.adh0368","DOIUrl":"10.1126/sciimmunol.adh0368","url":null,"abstract":"<div >Inborn errors of metabolism (IEMs) and immunity (IEIs) are Mendelian diseases in which complex phenotypes and patient rarity have limited clinical understanding. Whereas few genes have been annotated as contributing to both IEMs and IEIs, immunometabolic demands suggested greater functional overlap. Here, CRISPR screens tested IEM genes for immunologic roles and IEI genes for metabolic effects and found considerable previously unappreciated crossover. Analysis of IEMs showed that N-linked glycosylation and the hexosamine pathway enzyme <i>Gfpt1</i> are critical for T cell expansion and function. Further, T helper (T<sub>H</sub>1) cells synthesized uridine diphosphate <i>N</i>-acetylglucosamine more rapidly and were more impaired by <i>Gfpt1</i> deficiency than T<sub>H</sub>17 cells. Screening IEI genes found that <i>Bcl11b</i> promotes the CD4 T cell mitochondrial activity and <i>Mcl1</i> expression necessary to prevent metabolic stress. Thus, a high degree of functional overlap exists between IEM and IEI genes, and immunometabolic mechanisms may underlie a previously underappreciated intersection of these disorders.</div>","PeriodicalId":21734,"journal":{"name":"Science Immunology","volume":"9 98","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141992052","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}
Pub Date : 2024-08-16DOI: 10.1126/sciimmunol.adr9665
{"title":"Erratum for the Research Article “SARS-CoV-2 inflammation durably imprints memory CD4 T cells” by S. L. Gray-Gaillard et al.","authors":"","doi":"10.1126/sciimmunol.adr9665","DOIUrl":"10.1126/sciimmunol.adr9665","url":null,"abstract":"","PeriodicalId":21734,"journal":{"name":"Science Immunology","volume":"9 98","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141992388","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}
Pub Date : 2024-08-09DOI: 10.1126/sciimmunol.adr7181
{"title":"Erratum for the Research Article “TGF-β specifies TFH versus TH17 cell fates in murine CD4+ T cells through c-Maf” by Y. Chang et al.","authors":"","doi":"10.1126/sciimmunol.adr7181","DOIUrl":"10.1126/sciimmunol.adr7181","url":null,"abstract":"","PeriodicalId":21734,"journal":{"name":"Science Immunology","volume":"9 98","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141910109","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}
Pub Date : 2024-08-09DOI: 10.1126/sciimmunol.adp9279
Ida Paciello, Giuseppe Maccari, Giulio Pierleoni, Federica Perrone, Giulia Realini, Marco Troisi, Gabriele Anichini, Maria Grazia Cusi, Rino Rappuoli, Emanuele Andreano
The severe acute respiratory syndrome coronavirus 2 variant JN.1 recently emerged as the dominant variant despite having only one amino acid change on the spike (S) protein receptor binding domain (RBD) compared with the ancestral BA.2.86, which never represented more than 5% of global variants. To define at the molecular level the JN.1 ability to spread globally, we interrogated a panel of 899 neutralizing human monoclonal antibodies. Our data show that the single leucine-455–to–serine mutation in the JN.1 spike protein RBD unleashed the global spread of JN.1, likely occurring by elimination of more than 70% of the neutralizing antibodies mediated by IGHV3-53/3-66 germlines. However, the resilience of class 3 antibodies with low neutralization potency but strong Fc functions may explain the absence of JN.1 severe disease.
{"title":"SARS-CoV-2 JN.1 variant evasion of IGHV3-53/3-66 B cell germlines","authors":"Ida Paciello, Giuseppe Maccari, Giulio Pierleoni, Federica Perrone, Giulia Realini, Marco Troisi, Gabriele Anichini, Maria Grazia Cusi, Rino Rappuoli, Emanuele Andreano","doi":"10.1126/sciimmunol.adp9279","DOIUrl":"10.1126/sciimmunol.adp9279","url":null,"abstract":"<div >The severe acute respiratory syndrome coronavirus 2 variant JN.1 recently emerged as the dominant variant despite having only one amino acid change on the spike (S) protein receptor binding domain (RBD) compared with the ancestral BA.2.86, which never represented more than 5% of global variants. To define at the molecular level the JN.1 ability to spread globally, we interrogated a panel of 899 neutralizing human monoclonal antibodies. Our data show that the single leucine-455–to–serine mutation in the JN.1 spike protein RBD unleashed the global spread of JN.1, likely occurring by elimination of more than 70% of the neutralizing antibodies mediated by IGHV3-53/3-66 germlines. However, the resilience of class 3 antibodies with low neutralization potency but strong Fc functions may explain the absence of JN.1 severe disease.</div>","PeriodicalId":21734,"journal":{"name":"Science Immunology","volume":"9 98","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.science.org/doi/reader/10.1126/sciimmunol.adp9279","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141910110","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}
Pub Date : 2024-08-09DOI: 10.1126/sciimmunol.add4874
Mukta Deobagkar-Lele, Greg Crawford, Tanya L. Crockford, Jennifer Back, Rose Hodgson, Aneesha Bhandari, Katherine R. Bull, Richard J. Cornall
Dedicator of cytokinesis 8 (DOCK8) immunodeficiency syndrome is characterized by a failure of the germinal center response, a process involving the proliferation and positive selection of antigen-specific B cells. Here, we describe how DOCK8-deficient B cells are blocked at a light-zone checkpoint in the germinal centers of immunized mice, where they are unable to respond to T cell–dependent survival and selection signals and consequently differentiate into plasma cells or memory B cells. Although DOCK8-deficient B cells can acquire and present antigen to initiate activation of cognate T cells, integrin up-regulation, B cell–T cell conjugate formation, and costimulation are insufficient for sustained B cell and T cell activation when antigen availability is limited. Our findings provide an explanation for the failure of the humoral response in DOCK8 immunodeficiency syndrome and insight into how the level of available antigen modulates B cell–T cell cross-talk to fine-tune humoral immune responses and immunological memory.
细胞因子发生器 8（DOCK8）免疫缺陷综合征的特征是生殖中心反应失败，这一过程涉及抗原特异性 B 细胞的增殖和阳性选择。在这里，我们描述了 DOCK8 缺失的 B 细胞如何在免疫小鼠生殖中心的光区检查点受阻，无法对 T 细胞依赖的存活和选择信号做出反应，从而分化成浆细胞或记忆 B 细胞。虽然 DOCK8 缺失的 B 细胞可以获取并呈现抗原以启动同源 T 细胞的活化，但当抗原供应有限时，整合素上调、B 细胞-T 细胞结合体形成和成本刺激不足以实现 B 细胞和 T 细胞的持续活化。我们的研究结果解释了 DOCK8 免疫缺陷综合征中体液反应失败的原因，并深入探讨了可用抗原水平如何调节 B 细胞-T 细胞交叉对话，以微调体液免疫反应和免疫记忆。
{"title":"B cells require DOCK8 to elicit and integrate T cell help when antigen is limiting","authors":"Mukta Deobagkar-Lele, Greg Crawford, Tanya L. Crockford, Jennifer Back, Rose Hodgson, Aneesha Bhandari, Katherine R. Bull, Richard J. Cornall","doi":"10.1126/sciimmunol.add4874","DOIUrl":"10.1126/sciimmunol.add4874","url":null,"abstract":"<div >Dedicator of cytokinesis 8 (DOCK8) immunodeficiency syndrome is characterized by a failure of the germinal center response, a process involving the proliferation and positive selection of antigen-specific B cells. Here, we describe how DOCK8-deficient B cells are blocked at a light-zone checkpoint in the germinal centers of immunized mice, where they are unable to respond to T cell–dependent survival and selection signals and consequently differentiate into plasma cells or memory B cells. Although DOCK8-deficient B cells can acquire and present antigen to initiate activation of cognate T cells, integrin up-regulation, B cell–T cell conjugate formation, and costimulation are insufficient for sustained B cell and T cell activation when antigen availability is limited. Our findings provide an explanation for the failure of the humoral response in DOCK8 immunodeficiency syndrome and insight into how the level of available antigen modulates B cell–T cell cross-talk to fine-tune humoral immune responses and immunological memory.</div>","PeriodicalId":21734,"journal":{"name":"Science Immunology","volume":"9 98","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141910108","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}
Pub Date : 2024-08-09DOI: 10.1126/sciimmunol.adk9872
Alejandro Marin-Lopez, John D. Huck, Allen T. Esterly, Veronica Azcutia, Connor Rosen, Rolando Garcia-Milian, Esen Sefik, Gemma Vidal-Pedrola, Hamidah Raduwan, Tse-Yu Chen, Gunjan Arora, Stephanie Halene, Albert C. Shaw, Noah W. Palm, Richard A. Flavell, Charles A. Parkos, Saravanan Thangamani, Aaron M. Ring, Erol Fikrig
The Aedes aegypti mosquito is a vector of many infectious agents, including flaviviruses such as Zika virus. Components of mosquito saliva have pleomorphic effects on the vertebrate host to enhance blood feeding, and these changes also create a favorable niche for pathogen replication and dissemination. Here, we demonstrate that human CD47, which is known to be involved in various immune processes, interacts with a 34-kilodalton mosquito salivary protein named Nest1. Nest1 is up-regulated in blood-fed female A. aegypti and facilitates Zika virus dissemination in human skin explants. Nest1 has a stronger affinity for CD47 than its natural ligand, signal regulatory protein α, competing for binding at the same interface. The interaction between Nest1 with CD47 suppresses phagocytosis by human macrophages and inhibits proinflammatory responses by white blood cells, thereby suppressing antiviral responses in the skin. This interaction elucidates how an arthropod protein alters the human response to promote arbovirus infectivity.
{"title":"The human CD47 checkpoint is targeted by an immunosuppressive Aedes aegypti salivary factor to enhance arboviral skin infectivity","authors":"Alejandro Marin-Lopez, John D. Huck, Allen T. Esterly, Veronica Azcutia, Connor Rosen, Rolando Garcia-Milian, Esen Sefik, Gemma Vidal-Pedrola, Hamidah Raduwan, Tse-Yu Chen, Gunjan Arora, Stephanie Halene, Albert C. Shaw, Noah W. Palm, Richard A. Flavell, Charles A. Parkos, Saravanan Thangamani, Aaron M. Ring, Erol Fikrig","doi":"10.1126/sciimmunol.adk9872","DOIUrl":"10.1126/sciimmunol.adk9872","url":null,"abstract":"<div >The <i>Aedes aegypti</i> mosquito is a vector of many infectious agents, including flaviviruses such as Zika virus. Components of mosquito saliva have pleomorphic effects on the vertebrate host to enhance blood feeding, and these changes also create a favorable niche for pathogen replication and dissemination. Here, we demonstrate that human CD47, which is known to be involved in various immune processes, interacts with a 34-kilodalton mosquito salivary protein named Nest1. Nest1 is up-regulated in blood-fed female <i>A. aegypti</i> and facilitates Zika virus dissemination in human skin explants. Nest1 has a stronger affinity for CD47 than its natural ligand, signal regulatory protein α, competing for binding at the same interface. The interaction between Nest1 with CD47 suppresses phagocytosis by human macrophages and inhibits proinflammatory responses by white blood cells, thereby suppressing antiviral responses in the skin. This interaction elucidates how an arthropod protein alters the human response to promote arbovirus infectivity.</div>","PeriodicalId":21734,"journal":{"name":"Science Immunology","volume":"9 98","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141910111","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}
Aberrant activation of the cyclic guanosine monophosphate–adenosine monophosphate synthase–stimulator of interferon genes (cGAS-STING) pathway causes autoimmunity in humans and mice; however, the exact mechanism by which the cGAS-STING pathway initiates adaptive immunity and tissue pathology is still not fully understood. Here, we used a cGAS knockin (KI) mouse model that develops systemic autoimmunity. In the lungs of cGAS-KI mice, blood vessels were enclosed by organized lymphoid tissues that resemble tertiary lymphoid structures (TLSs). Cell-intrinsic cGAS induction promoted up-regulation of CCR5 in CD8+ T cells and led to CCL5 production in vascular endothelial cells. Peripheral CD8+ T cells were recruited to the lungs and produced CXCL13 and interferon-γ. The latter triggered endothelial cell death, potentiated CCL5 production, and was essential for TLS establishment. Blocking CCL5 or CCR5, or depleting CD8+ T cells, impaired TLS formation. cGAS-mediated TLS formation also enhanced humoral and antitumor responses. These data demonstrate that cGAS signaling drives a specialized lymphoid structure that underlies autoimmune tissue pathology.
{"title":"cGAS-activated endothelial cell–T cell cross-talk initiates tertiary lymphoid structure formation","authors":"Ruibo Zhao, Jinghe Zhang, Jialu Ma, Yali Qu, Zhenrong Yang, Zhinan Yin, Fengyin Li, Zhongjun Dong, Qinmiao Sun, Shu Zhu, Zhijian J. Chen, Daxing Gao","doi":"10.1126/sciimmunol.adk2612","DOIUrl":"10.1126/sciimmunol.adk2612","url":null,"abstract":"<div >Aberrant activation of the cyclic guanosine monophosphate–adenosine monophosphate synthase–stimulator of interferon genes (cGAS-STING) pathway causes autoimmunity in humans and mice; however, the exact mechanism by which the cGAS-STING pathway initiates adaptive immunity and tissue pathology is still not fully understood. Here, we used a cGAS knockin (KI) mouse model that develops systemic autoimmunity. In the lungs of cGAS-KI mice, blood vessels were enclosed by organized lymphoid tissues that resemble tertiary lymphoid structures (TLSs). Cell-intrinsic cGAS induction promoted up-regulation of CCR5 in CD8<sup>+</sup> T cells and led to CCL5 production in vascular endothelial cells. Peripheral CD8<sup>+</sup> T cells were recruited to the lungs and produced CXCL13 and interferon-γ. The latter triggered endothelial cell death, potentiated CCL5 production, and was essential for TLS establishment. Blocking CCL5 or CCR5, or depleting CD8<sup>+</sup> T cells, impaired TLS formation. cGAS-mediated TLS formation also enhanced humoral and antitumor responses. These data demonstrate that cGAS signaling drives a specialized lymphoid structure that underlies autoimmune tissue pathology.</div>","PeriodicalId":21734,"journal":{"name":"Science Immunology","volume":"9 98","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.science.org/doi/reader/10.1126/sciimmunol.adk2612","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141879343","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}
Pub Date : 2024-08-02DOI: 10.1126/sciimmunol.ado1227
Cecilia Ruscitti, Joan Abinet, Pauline Maréchal, Margot Meunier, Constance de Meeûs, Domien Vanneste, Pierre Janssen, Mickael Dourcy, Marc Thiry, Fabrice Bureau, Christoph Schneider, Benedicte Machiels, Andres Hidalgo, Florent Ginhoux, Benjamin G. Dewals, Julien Guiot, Florence Schleich, Mutien-Marie Garigliany, Akeila Bellahcène, Coraline Radermecker, Thomas Marichal
The lung is constantly exposed to airborne pathogens and particles that can cause alveolar damage. Hence, appropriate repair responses are essential for gas exchange and life. Here, we deciphered the spatiotemporal trajectory and function of an atypical population of macrophages after lung injury. Post–influenza A virus (IAV) infection, short-lived monocyte-derived Ly6G-expressing macrophages (Ly6G+ Macs) were recruited to the alveoli of lung perilesional areas. Ly6G+ Macs engulfed immune cells, exhibited a high metabolic potential, and clustered with alveolar type 2 epithelial cells (AT2s) in zones of active epithelial regeneration. Ly6G+ Macs were partially dependent on granulocyte-macrophage colony-stimulating factor and interleukin-4 receptor signaling and were essential for AT2-dependent alveolar regeneration. Similar macrophages were recruited in other models of injury and in the airspaces of lungs from patients with suspected pneumonia. This study identifies perilesional alveolar Ly6G+ Macs as a spatially restricted, short-lived macrophage subset promoting epithelial regeneration postinjury, thus representing an attractive therapeutic target for treating lung damage.
{"title":"Recruited atypical Ly6G+ macrophages license alveolar regeneration after lung injury","authors":"Cecilia Ruscitti, Joan Abinet, Pauline Maréchal, Margot Meunier, Constance de Meeûs, Domien Vanneste, Pierre Janssen, Mickael Dourcy, Marc Thiry, Fabrice Bureau, Christoph Schneider, Benedicte Machiels, Andres Hidalgo, Florent Ginhoux, Benjamin G. Dewals, Julien Guiot, Florence Schleich, Mutien-Marie Garigliany, Akeila Bellahcène, Coraline Radermecker, Thomas Marichal","doi":"10.1126/sciimmunol.ado1227","DOIUrl":"10.1126/sciimmunol.ado1227","url":null,"abstract":"<div >The lung is constantly exposed to airborne pathogens and particles that can cause alveolar damage. Hence, appropriate repair responses are essential for gas exchange and life. Here, we deciphered the spatiotemporal trajectory and function of an atypical population of macrophages after lung injury. Post–influenza A virus (IAV) infection, short-lived monocyte-derived Ly6G-expressing macrophages (Ly6G<sup>+</sup> Macs) were recruited to the alveoli of lung perilesional areas. Ly6G<sup>+</sup> Macs engulfed immune cells, exhibited a high metabolic potential, and clustered with alveolar type 2 epithelial cells (AT2s) in zones of active epithelial regeneration. Ly6G<sup>+</sup> Macs were partially dependent on granulocyte-macrophage colony-stimulating factor and interleukin-4 receptor signaling and were essential for AT2-dependent alveolar regeneration. Similar macrophages were recruited in other models of injury and in the airspaces of lungs from patients with suspected pneumonia. This study identifies perilesional alveolar Ly6G<sup>+</sup> Macs as a spatially restricted, short-lived macrophage subset promoting epithelial regeneration postinjury, thus representing an attractive therapeutic target for treating lung damage.</div>","PeriodicalId":21734,"journal":{"name":"Science Immunology","volume":"9 98","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141879346","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}
Pub Date : 2024-08-02DOI: 10.1126/sciimmunol.adr9661
Rachael A. Clark
Virus and T cell inflammation persist in the tissues of patients with Long Covid.
病毒和 T 细胞炎症持续存在于长 Covid 患者的组织中。
{"title":"Enough already: T cell inflammation and SARS-CoV-2 virus persist in Long Covid","authors":"Rachael A. Clark","doi":"10.1126/sciimmunol.adr9661","DOIUrl":"10.1126/sciimmunol.adr9661","url":null,"abstract":"<div >Virus and T cell inflammation persist in the tissues of patients with Long Covid.</div>","PeriodicalId":21734,"journal":{"name":"Science Immunology","volume":"9 98","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141879344","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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