ImmunologyPub Date : 2024-08-27DOI: 10.1111/imm.13855
Fatmawati Lambuk, Nor Asyikin Nordin, Ali Mussa, Lidawani Lambuk, Suhana Ahmad, Rosline Hassan, Ramlah Kadir, Rohimah Mohamud, Nurul Khaiza Yahya
{"title":"Towards understanding the role of nanomedicine in targeting TNFR2 in rheumatoid arthritis","authors":"Fatmawati Lambuk, Nor Asyikin Nordin, Ali Mussa, Lidawani Lambuk, Suhana Ahmad, Rosline Hassan, Ramlah Kadir, Rohimah Mohamud, Nurul Khaiza Yahya","doi":"10.1111/imm.13855","DOIUrl":"10.1111/imm.13855","url":null,"abstract":"<p>Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by inflammation of the synovium and progressive joint destruction which significantly affects both quality of life and socioeconomic status. Admittedly, various treatments are available, but they are usually accompanied by various side effects, from mild to severe, and potentially with adverse events. Tumour necrosis factor-alpha (TNF-α) plays a crucial role in the pathophysiology of RA. It promotes inflammatory, apoptosis and necroptosis via TNF receptor-1 (TNFR1) but elicit anti-inflammatory effects via TNFR2. Herein, targeting TNFR2 has gained attention in RA studies. Understanding the role of nanomedicine in modulating TNFR2 signalling may be the instrument in development of RA therapies. Nanotechnology has made a significant progress in treating various conditions of diseases since its inception. Due to this, nanomedicine has emerged as a promising therapeutics approach for RA. Recent studies have demonstrated the potential of nanomedicine in RA theranostics, combining therapy and diagnostics for improved treatment outcomes. Owing to the challenges and advancements in the field of nanotechnology, nanoparticles are seen as an applicable candidate in the treatment of RA. In this review, we provide an overview of the role of nanomedicine in targeting TNFR2 for the treatment of RA and highlight the limitations of current therapies as well as the potential of nanocarriers with controlled drug release and active targeting abilities.</p>","PeriodicalId":13508,"journal":{"name":"Immunology","volume":"173 4","pages":"622-633"},"PeriodicalIF":4.9,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/imm.13855","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142080196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ImmunologyPub Date : 2024-08-26DOI: 10.1111/imm.13853
Yeni Yang, Tiansong Wu, Youpeng Wang, Dingan Luo, Ziyin Zhao, Hongfa Sun, Mao Zhang, Bin Zhang, Bing Han
{"title":"Hypoxic tumour-derived exosomal miR-1290 exacerbates the suppression of CD8+ T cells by promoting M2 macrophage polarization","authors":"Yeni Yang, Tiansong Wu, Youpeng Wang, Dingan Luo, Ziyin Zhao, Hongfa Sun, Mao Zhang, Bin Zhang, Bing Han","doi":"10.1111/imm.13853","DOIUrl":"10.1111/imm.13853","url":null,"abstract":"<p>Hypoxia plays an important role in the metastasis of hepatocellular carcinoma (HCC). Exosomes have been widely studied as mediators of communication between tumours and immune cells. However, the specific mechanism by which hypoxic HCC cell-derived exosomes suppress antitumor immunity is unclear. Hypoxia scores were determined for The Cancer Genome-Liver Hepatocellular Carcinoma (TCGA-LIHC) dataset patients, and HCC patients in the hyperhypoxic group had a higher degree of M2 macrophage infiltration. Patients in the M2 high-invasion group had a lower probability of survival than those in the low-invasion group. In vivo and in vitro experiments demonstrated that exosomes secreted by hypoxic HCC cells promote M2 macrophage polarization. This polarization induces apoptosis in CD8+ T cells. Additionally, it encourages epithelial–mesenchymal transition (EMT), which increases HCC migration. Exosomal miRNA sequencing revealed that miR-1290 was highly expressed in exosomes secreted by hypoxic HCC cells. Mechanistically, miR-1290 in macrophages inhibited Akt2 while upregulating PD-L1 to promote M2 polarization, induce apoptosis in CD8<sup>+</sup> T cells, and enhance EMT in HCC. Animal studies found that the miR-1290 antagomir in combination with the immune checkpoint inhibitor produced better antitumor effects than the monotherapies. In conclusion, the secretion of exosome-derived miR-1290 from HCC cells in a hypoxic environment supported immune escape by HCC cells by promoting M2 macrophage polarization to induce apoptosis in CD8<sup>+</sup> T cells and enhance EMT that promoted HCC metastasis. Therefore, miR-1290 is an important molecule in antitumor immunity in HCC, and inhibition of miR-1290 could provide a novel immunotherapeutic approach for HCC treatment.</p>","PeriodicalId":13508,"journal":{"name":"Immunology","volume":"173 4","pages":"672-688"},"PeriodicalIF":4.9,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142055476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ImmunologyPub Date : 2024-08-26DOI: 10.1111/imm.13850
Praveena Naidu, Mandë Holford
{"title":"Microscopic marvels: Decoding the role of micropeptides in innate immunity","authors":"Praveena Naidu, Mandë Holford","doi":"10.1111/imm.13850","DOIUrl":"10.1111/imm.13850","url":null,"abstract":"<p>The innate immune response is under selection pressures from changing environments and pathogens. While sequence evolution can be studied by comparing rates of amino acid mutations within and between species, how a gene's birth and death contribute to the evolution of immunity is less known. Short open reading frames, once regarded as untranslated or transcriptional noise, can often produce micropeptides of <100 amino acids with a wide array of biological functions. Some micropeptide sequences are well conserved, whereas others have no evolutionary conservation, potentially representing new functional compounds that arise from species-specific adaptations. To date, few reports have described the discovery of novel micropeptides of the innate immune system. The diversity of immune-related micropeptides is a blind spot for gene and functional annotation. Immune-related micropeptides represent a potential reservoir of untapped compounds for understanding and treating disease. This review consolidates what is currently known about the evolution and function of innate immune-related micropeptides to facilitate their investigation.</p>","PeriodicalId":13508,"journal":{"name":"Immunology","volume":"173 4","pages":"605-621"},"PeriodicalIF":4.9,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/imm.13850","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142072704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Altered epitopes enhance macrophage-mediated anti-tumour immunity to low-immunogenic tumour mutations","authors":"Qiumin Yu, Tingran Zhang, Tiandi He, Yifan Yang, Wanli Zhang, Yanliang Kang, Zijie Wu, Wenbin Xie, Jiaxue Zheng, Qianqian Qian, Guozhi Li, Di Zhang, Qiuli Mao, Zheng Gao, Xiaoning Wang, Xupeiyao Shi, Shitong Huang, Hanlin Guo, Haoyu Zhang, Lingxiao Chen, Ximing Li, Danni Deng, Li Zhang, Yue Tong, Wenbing Yao, Xiangdong Gao, Hong Tian","doi":"10.1111/imm.13854","DOIUrl":"10.1111/imm.13854","url":null,"abstract":"<p>Personalized neoantigen therapy has shown long-term and stable efficacy in specific patient populations. However, not all patients have sufficient levels of neoantigens for treatment. Although somatic mutations are commonly found in tumours, a significant portion of these mutations do not trigger an immune response. Patients with low mutation burdens continue to exhibit unresponsiveness to this treatment. We propose a design paradigm for neoantigen vaccines by utilizing the highly immunogenic unnatural amino acid p-nitrophenylalanine (pNO<sub>2</sub>Phe) for sequence alteration of somatic mutations that failed to generate neoepitopes. This enhances the immunogenicity of the mutations and transforms it into a suitable candidate for immunotherapy. The nitrated altered epitope vaccines designed according to this paradigm is capable of activating circulating CD8<sup>+</sup> T cells and inducing immune cross-reactivity against autologous mutated epitopes in different MHC backgrounds (H-2K<sup>b</sup>, H-2K<sup>d</sup>, and human HLA-A02:01), leading to the elimination of tumour cells carrying the mutation. After immunization with the altered epitopes, tumour growth was significantly inhibited. It is noteworthy that nitrated epitopes induce tumour-infiltrating macrophages to differentiate into the M1 phenotype, surprisingly enhancing the MHC II molecule presenting pathway of macrophages. Nitrated epitope-treated macrophages have the potential to cross-activate CD4<sup>+</sup> and CD8<sup>+</sup> T cells, which may explain why pNO<sub>2</sub>Phe can enhance the immunogenicity of epitopes. Meanwhile, the immunosuppressive microenvironment of the tumour is altered due to the activation of macrophages. The nitrated neoantigen vaccine strategy enables the design of vaccines targeting non-immunogenic tumour mutations, expanding the pool of potential peptides for personalized and shared novel antigen therapy. This approach provides treatment opportunities for patients previously ineligible for new antigen vaccine therapy.</p>","PeriodicalId":13508,"journal":{"name":"Immunology","volume":"173 4","pages":"654-671"},"PeriodicalIF":4.9,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142035754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ImmunologyPub Date : 2024-08-19DOI: 10.1111/imm.13844
Tays Troncoso-Bravo, Mario A. Ramírez, Ricardo A. Loaiza, Carolina Román-Cárdenas, Georgios Papazisis, Daniel Garrido, Pablo A. González, Susan M. Bueno, Alexis M. Kalergis
{"title":"Advancement in the development of mRNA-based vaccines for respiratory viruses","authors":"Tays Troncoso-Bravo, Mario A. Ramírez, Ricardo A. Loaiza, Carolina Román-Cárdenas, Georgios Papazisis, Daniel Garrido, Pablo A. González, Susan M. Bueno, Alexis M. Kalergis","doi":"10.1111/imm.13844","DOIUrl":"10.1111/imm.13844","url":null,"abstract":"<p>Acute respiratory infections are the leading cause of death and illness in children under 5 years old and represent a significant burden in older adults. Primarily caused by viruses infecting the lower respiratory tract, symptoms include cough, congestion, and low-grade fever, potentially leading to bronchiolitis and pneumonia. Messenger ribonucleic acid (mRNA)-based vaccines are biopharmaceutical formulations that employ mRNA molecules to induce specific immune responses, facilitating the expression of viral or bacterial antigens and promoting immunization against infectious diseases. Notably, this technology had significant relevance during the COVID-19 pandemic, as these formulations helped to limit SARS-CoV-2 virus infections, hospitalizations, and deaths. Importantly, mRNA vaccines promise to be implemented as new alternatives for fighting other respiratory viruses, such as influenza, human respiratory syncytial virus, and human metapneumovirus. This review article analyzes mRNA-based vaccines' main contributions, perspectives, challenges, and implications against respiratory viruses.</p>","PeriodicalId":13508,"journal":{"name":"Immunology","volume":"173 3","pages":"481-496"},"PeriodicalIF":4.9,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/imm.13844","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142004164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ImmunologyPub Date : 2024-08-15DOI: 10.1111/imm.13852
{"title":"Featured Cover","authors":"","doi":"10.1111/imm.13852","DOIUrl":"https://doi.org/10.1111/imm.13852","url":null,"abstract":"<p>Cover illustration: The cover image is based on the article <i>Immunotherapy and the ovarian cancer microenvironment: Exploring potential strategies for enhanced treatment efficacy</i> by Zhi-Bin Wang et al., https://doi.org/10.1111/imm.13793.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":13508,"journal":{"name":"Immunology","volume":"173 1","pages":"i"},"PeriodicalIF":4.9,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/imm.13852","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141986070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ImmunologyPub Date : 2024-08-13DOI: 10.1111/imm.13843
Guoshu Deng, Yulin Zhang, Jiankun Song, Ying Zhang, Qi Zheng, Yue Luo, Xiaoya Fei, Yang Yang, Le Kuai, Bin Li, Ying Luo
{"title":"The role and therapeutic strategies for tissue-resident memory T cells, central memory T cells, and effector memory T cells in psoriasis","authors":"Guoshu Deng, Yulin Zhang, Jiankun Song, Ying Zhang, Qi Zheng, Yue Luo, Xiaoya Fei, Yang Yang, Le Kuai, Bin Li, Ying Luo","doi":"10.1111/imm.13843","DOIUrl":"10.1111/imm.13843","url":null,"abstract":"<p>Psoriasis is a skin disease that is inflammatory and persistent, causing a high rate of recurrence, poor quality of life, and significant socioeconomic burden. Its main pathological manifestations are abnormal activation and infiltration of T cells and excessive proliferation of keratinocytes (KCs). The great majority of patients with psoriasis will relapse after remission. It usually lasts a lifetime and necessitates long-term treatment strategies. During periods of activity and remission, one of the main cell types in psoriasis is memory T cells, which include tissue-resident memory T (TRM) cells, central memory T (TCM) cells, and effector memory T (TEM) cells. They work by releasing inflammatory factors, cytotoxic particles, or altering cell subpopulations, leading to increased inflammation or recurrence. This review summarizes the role of memory T cells in the pathology and treatment of psoriasis, with a view to potential novel therapies and therapeutic targets.</p>","PeriodicalId":13508,"journal":{"name":"Immunology","volume":"173 3","pages":"470-480"},"PeriodicalIF":4.9,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/imm.13843","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141971043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ImmunologyPub Date : 2024-08-12DOI: 10.1111/imm.13849
P. Abigail Alvarado-Vazquez, Erika Mendez-Enriquez, Lisa Pähn, Aleksandra Dondalska, Diego Pazos-Castro, Jenny Hallgren
{"title":"Mast cells contribute to T-cell accumulation in the bronchoalveolar space in mice with IL-33-induced airway inflammation","authors":"P. Abigail Alvarado-Vazquez, Erika Mendez-Enriquez, Lisa Pähn, Aleksandra Dondalska, Diego Pazos-Castro, Jenny Hallgren","doi":"10.1111/imm.13849","DOIUrl":"10.1111/imm.13849","url":null,"abstract":"<p>Interleukin (IL)-33 released from airway epithelial cells plays a vital role in shaping type 2 immune responses by binding to the ST2 receptor present in many immune cells, including mast cells (MCs). Intranasal administration of IL-33 in mice induces type 2 lung inflammation, an increase in lung MC progenitors, and transepithelial migration of leukocytes to the bronchoalveolar space. The aim of this study was to determine the contribution of MCs in IL-33-induced lung pathology. Four daily intranasal administrations of IL-33 reduced spirometry-like lung function parameters, induced airway hyperresponsiveness, and increased leukocytes in bronchoalveolar lavage fluid (BAL) in an ST2-dependent manner. MC-deficient (Cpa3<sup>cre/+</sup>) mice, which lack MCs, had intact spirometry-like lung function but slightly reduced airway hyperresponsiveness, possibly related to reduced IL-33 or serotonin. Strikingly, Cpa3<sup>cre/+</sup> mice exposed to IL-33 had 50% reduction in BAL T-cells, and CXCL1 and IL-33 were reduced in the lung. Intranasal IL-33 induced CXCR2 expression in T-cells in a MC-independent fashion. Furthermore, IL-33-induced lung MCs were immunopositive for CXCL1 and localized in the epithelium of wild-type mice. These results suggest that MCs are required to sustain intact lung IL-33 and CXCL1 levels in mice with IL-33-induced airway inflammation, thereby facilitating T-cell accumulation in the bronchoalveolar space.</p>","PeriodicalId":13508,"journal":{"name":"Immunology","volume":"173 3","pages":"590-602"},"PeriodicalIF":4.9,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/imm.13849","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141916527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ImmunologyPub Date : 2024-08-11DOI: 10.1111/imm.13847
Rudradeep Hazra, Soumyadeep Chattopadhyay, Arijit Mallick, Sakuntala Gayen, Souvik Roy
{"title":"Unravelling CD24-Siglec-10 pathway: Cancer immunotherapy from basic science to clinical studies","authors":"Rudradeep Hazra, Soumyadeep Chattopadhyay, Arijit Mallick, Sakuntala Gayen, Souvik Roy","doi":"10.1111/imm.13847","DOIUrl":"10.1111/imm.13847","url":null,"abstract":"<p>Cancer immunotherapy has revolutionized the treatment landscape by harnessing the power of the immune system to combat malignancies. Two of the most promising players in this field are cluster of differentiation 24 (CD24) and sialic acid-binding Ig-like lectin 10 (Siglec-10), and both of them play pivotal roles in modulating immune responses. CD24, a cell surface glycoprotein, emerges as a convincing fundamental signal transducer for therapeutic intervention, given its significant implication in the processes related to tumour progression and immunogenic evasion. Additionally, the immunomodulatory functions of Siglec-10, a prominent member within the Siglec family of immune receptors, have recently become a crucial point of interest, particularly in the context of the tumour microenvironment. Hence, the intricate interplay of both CD24 and Siglec-10 assumes a critical role in fostering tumour growth, facilitating metastasis and also orchestrating immune evasion. Recent studies have found multiple evidences supporting the therapeutic potential of targeting CD24 in cancer treatment. Siglec-10, on the other hand, exhibits immunosuppressive properties that contribute to immune tolerance within the tumour microenvironment. Therefore, we delve into the complex mechanisms through which Siglec-10 modulates immune responses and facilitates immune escape in cancer. Siglec-10 also acts as a viable target for cancer immunotherapy and presents novel avenues for the development of therapeutic interventions. Furthermore, we examine the synergy between CD24 and Siglec-10 in shaping the immunosuppressive tumour microenvironment and discuss the implications for combination therapies. Therefore, understanding the roles of CD24 and Siglec-10 in cancer immunotherapy opens exciting possibilities for the development of novel therapeutics.</p>","PeriodicalId":13508,"journal":{"name":"Immunology","volume":"173 3","pages":"442-469"},"PeriodicalIF":4.9,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/imm.13847","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141916528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ImmunologyPub Date : 2024-08-10DOI: 10.1111/imm.13848
Yue Hu, Zhihong Feng, Gao An, Zhe Lv, Jingjing Wang, Ye Cui, Chris J. Corrigan, Wei Wang, Qin Li, Sun Ying
{"title":"Edwardsiella tarda induces airways inflammation and production of autoantibodies against lung tissues through regulation of the IL-33-ST2 axis","authors":"Yue Hu, Zhihong Feng, Gao An, Zhe Lv, Jingjing Wang, Ye Cui, Chris J. Corrigan, Wei Wang, Qin Li, Sun Ying","doi":"10.1111/imm.13848","DOIUrl":"10.1111/imm.13848","url":null,"abstract":"<p>Chronic obstructive pulmonary disease (COPD) is a highly prevalent chronic respiratory disease characterised by irreversible airways obstruction associated with chronic airways inflammation and remodelling, while the pathogenesis and the mechanistic differences between patients remain to be fully elucidated. We previously reported that alarmin cytokine IL-33 may contribute to the production of autoantibodies against respiratory epithelial cells. Here we expand the hypothesis that pulmonary autoimmune responses induced by airway microbiota also contribute to the progression of COPD. We focused on <i>Edwardsiella tarda</i> which we detected uniquely in the induced sputum of patients with acute exacerbations of COPD. Pernasal challenge of the airways of WT mice with supernatants of cultured <i>E. tarda</i> induced marked, elevated expression of IL-33 in the lung tissues. Immunisation of animals with supernatants of cultured <i>E. tarda</i> resulted in significantly elevated airways inflammation, the formation of tertiary lymphatic structures and significantly elevated proportions of T follicular helper T cells in the lung tissue and mediastinal lymph nodes. Interestingly, such challenge also induced production of IgG autoantibodies directed against lung tissue lysate, alveolar epithelial cell proteins and elastin fragment, while putrescine, one of metabolites generated by the bacterium, might play an important role in the autoantibody production. Furthermore, all of these effects were partly but significantly abrogated in mice with deletion of the IL-33 receptor ST2. Collectively, these data support the hypothesis that COPD is progressed at least partly by airways microbiota such as <i>E. tarda</i> initiating autoimmune attack of the airways epithelium mediated at least partly through the IL-33-ST2 axis.</p>","PeriodicalId":13508,"journal":{"name":"Immunology","volume":"173 3","pages":"575-589"},"PeriodicalIF":4.9,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141912463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}