Pub Date : 2024-12-10DOI: 10.1038/s41423-024-01245-8
Elena Catanzaro, Manuel Beltrán-Visiedo, Lorenzo Galluzzi, Dmitri V. Krysko
While immunotherapy with immune checkpoint inhibitors (ICIs) has revolutionized the clinical management of various malignancies, a large fraction of patients are refractory to ICIs employed as standalone therapeutics, necessitating the development of combinatorial treatment strategies. Immunogenic cell death (ICD) inducers have attracted considerable interest as combinatorial partners for ICIs, at least in part owing to their ability to initiate a tumor-targeting adaptive immune response. However, compared with either approach alone, combinatorial regimens involving ICD inducers and ICIs have not always shown superior clinical activity. Here, we discuss accumulating evidence on the therapeutic interactions between ICD inducers and immunotherapy with ICIs in oncological settings, identify key factors that may explain discrepancies between preclinical and clinical findings, and propose strategies that address existing challenges to increase the efficacy of these combinations in patients with cancer.
{"title":"Immunogenicity of cell death and cancer immunotherapy with immune checkpoint inhibitors","authors":"Elena Catanzaro, Manuel Beltrán-Visiedo, Lorenzo Galluzzi, Dmitri V. Krysko","doi":"10.1038/s41423-024-01245-8","DOIUrl":"10.1038/s41423-024-01245-8","url":null,"abstract":"While immunotherapy with immune checkpoint inhibitors (ICIs) has revolutionized the clinical management of various malignancies, a large fraction of patients are refractory to ICIs employed as standalone therapeutics, necessitating the development of combinatorial treatment strategies. Immunogenic cell death (ICD) inducers have attracted considerable interest as combinatorial partners for ICIs, at least in part owing to their ability to initiate a tumor-targeting adaptive immune response. However, compared with either approach alone, combinatorial regimens involving ICD inducers and ICIs have not always shown superior clinical activity. Here, we discuss accumulating evidence on the therapeutic interactions between ICD inducers and immunotherapy with ICIs in oncological settings, identify key factors that may explain discrepancies between preclinical and clinical findings, and propose strategies that address existing challenges to increase the efficacy of these combinations in patients with cancer.","PeriodicalId":9950,"journal":{"name":"Cellular &Molecular Immunology","volume":"22 1","pages":"24-39"},"PeriodicalIF":21.8,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41423-024-01245-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142799548","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 : 2024-12-09DOI: 10.1038/s41423-024-01238-7
Maria Perez-Penco, Mikkel Byrdal, Lucia Lara de la Torre, Marta Ballester, Shawez Khan, Majken Siersbæk, Inés Lecoq, Cecilie Oelvang Madsen, Julie Westerlin Kjeldsen, Inge Marie Svane, Morten Hansen, Marco Donia, Julia Sidenius Johansen, Lars Rønn Olsen, Lars Grøntved, Inna Markovna Chen, Luis Arnes, Morten Orebo Holmström, Mads Hald Andersen
Although interleukin (IL)-6 is considered immunosuppressive and tumor-promoting, emerging evidence suggests that it may support antitumor immunity. While combining immune checkpoint inhibitors (ICIs) and radiotherapy in patients with pancreatic cancer (PC) has yielded promising clinical results, the addition of an anti-IL-6 receptor (IL-6R) antibody has failed to elicit clinical benefits. Notably, a robust TGFβ-specific immune response at baseline in PC patients treated solely with ICIs and radiotherapy correlated with improved survival. Recent preclinical studies demonstrated the efficacy of a TGFβ-based immune modulatory vaccine in controlling PC tumor growth, underscoring the important role of TGFβ-specific immunity in PC. Here, we explored the importance of IL-6 for TGFβ-specific immunity in PC. In a murine model of PC, coadministration of the TGFβ-based immune modulatory vaccine with an anti-IL-6R antibody rendered the vaccine ineffective. IL-6R blockade hampered the development of vaccine-induced T-cells and tumoral T-cell infiltration. Furthermore, it impaired the myeloid population, resulting in increased tumor-associated macrophage infiltration and an enhanced immunosuppressive phenotype. In PC patients, in contrast to those receiving only ICIs and radiotherapy, robust TGFβ-specific T-cell responses at baseline did not correlate with improved survival in patients receiving ICIs, radiotherapy and IL-6R blockade. Peripheral blood immunophenotyping revealed that IL-6R blockade altered the T-cell and monocytic compartments, which was consistent with the findings in the murine model. Our data suggest that the antitumor efficacy of TGFβ-specific T cells in PC depends on the presence of IL-6 within the tumor. Consequently, caution should be exercised when employing IL-6R blockade in patients receiving cancer immunotherapy.
{"title":"The antitumor activity of TGFβ-specific T cells is dependent on IL-6 signaling","authors":"Maria Perez-Penco, Mikkel Byrdal, Lucia Lara de la Torre, Marta Ballester, Shawez Khan, Majken Siersbæk, Inés Lecoq, Cecilie Oelvang Madsen, Julie Westerlin Kjeldsen, Inge Marie Svane, Morten Hansen, Marco Donia, Julia Sidenius Johansen, Lars Rønn Olsen, Lars Grøntved, Inna Markovna Chen, Luis Arnes, Morten Orebo Holmström, Mads Hald Andersen","doi":"10.1038/s41423-024-01238-7","DOIUrl":"10.1038/s41423-024-01238-7","url":null,"abstract":"Although interleukin (IL)-6 is considered immunosuppressive and tumor-promoting, emerging evidence suggests that it may support antitumor immunity. While combining immune checkpoint inhibitors (ICIs) and radiotherapy in patients with pancreatic cancer (PC) has yielded promising clinical results, the addition of an anti-IL-6 receptor (IL-6R) antibody has failed to elicit clinical benefits. Notably, a robust TGFβ-specific immune response at baseline in PC patients treated solely with ICIs and radiotherapy correlated with improved survival. Recent preclinical studies demonstrated the efficacy of a TGFβ-based immune modulatory vaccine in controlling PC tumor growth, underscoring the important role of TGFβ-specific immunity in PC. Here, we explored the importance of IL-6 for TGFβ-specific immunity in PC. In a murine model of PC, coadministration of the TGFβ-based immune modulatory vaccine with an anti-IL-6R antibody rendered the vaccine ineffective. IL-6R blockade hampered the development of vaccine-induced T-cells and tumoral T-cell infiltration. Furthermore, it impaired the myeloid population, resulting in increased tumor-associated macrophage infiltration and an enhanced immunosuppressive phenotype. In PC patients, in contrast to those receiving only ICIs and radiotherapy, robust TGFβ-specific T-cell responses at baseline did not correlate with improved survival in patients receiving ICIs, radiotherapy and IL-6R blockade. Peripheral blood immunophenotyping revealed that IL-6R blockade altered the T-cell and monocytic compartments, which was consistent with the findings in the murine model. Our data suggest that the antitumor efficacy of TGFβ-specific T cells in PC depends on the presence of IL-6 within the tumor. Consequently, caution should be exercised when employing IL-6R blockade in patients receiving cancer immunotherapy.","PeriodicalId":9950,"journal":{"name":"Cellular &Molecular Immunology","volume":"22 1","pages":"111-126"},"PeriodicalIF":21.8,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41423-024-01238-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142799561","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 : 2024-12-09DOI: 10.1038/s41423-024-01244-9
Leo Koenderman, Nienke Vrisekoop
The view of neutrophils has shifted from simple phagocytic cells, whose main function is to kill pathogens, to very complex cells that are also involved in immune regulation and tissue repair. These cells are essential for maintaining and regaining tissue homeostasis. Neutrophils can be viewed as double-edged swords in a range of situations. The potent killing machinery necessary for immune responses to pathogens can easily lead to collateral damage to host tissues when inappropriately controlled. Furthermore, some subtypes of neutrophils are potent pathogen killers, whereas others are immunosuppressive or can aid in tissue healing. Finally, in tumor immunology, many examples of both protumorigenic and antitumorigenic properties of neutrophils have been described. This has important consequences for cancer therapy, as targeting neutrophils can lead to either suppressed or stimulated antitumor responses. This review will discuss the current knowledge regarding the pro- and antitumorigenic roles of neutrophils, leading to the concept of a confused state of neutrophil-driven pro-/antitumor responses.
{"title":"Neutrophils in cancer: from biology to therapy","authors":"Leo Koenderman, Nienke Vrisekoop","doi":"10.1038/s41423-024-01244-9","DOIUrl":"10.1038/s41423-024-01244-9","url":null,"abstract":"The view of neutrophils has shifted from simple phagocytic cells, whose main function is to kill pathogens, to very complex cells that are also involved in immune regulation and tissue repair. These cells are essential for maintaining and regaining tissue homeostasis. Neutrophils can be viewed as double-edged swords in a range of situations. The potent killing machinery necessary for immune responses to pathogens can easily lead to collateral damage to host tissues when inappropriately controlled. Furthermore, some subtypes of neutrophils are potent pathogen killers, whereas others are immunosuppressive or can aid in tissue healing. Finally, in tumor immunology, many examples of both protumorigenic and antitumorigenic properties of neutrophils have been described. This has important consequences for cancer therapy, as targeting neutrophils can lead to either suppressed or stimulated antitumor responses. This review will discuss the current knowledge regarding the pro- and antitumorigenic roles of neutrophils, leading to the concept of a confused state of neutrophil-driven pro-/antitumor responses.","PeriodicalId":9950,"journal":{"name":"Cellular &Molecular Immunology","volume":"22 1","pages":"4-23"},"PeriodicalIF":21.8,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41423-024-01244-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142799551","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 : 2024-12-09DOI: 10.1038/s41423-024-01242-x
MinYeong Lim, Taesoo Kim, Hyesung Kim, Bo Gun Jang, Jae Kyung Myung, Hye Young Kim
Eosinophilic esophagitis (EoE) is a chronic allergic disorder characterized by eosinophilia and epithelial thickening, resulting in dysphagia. While emerging evidence implicates increased frequencies of group 2 innate lymphoid cells (ILC2s) and increased interleukin (IL)-33 expression in EoE pathogenesis, the precise mechanisms remain unclear. In this study, we investigated the role of ILC2s in EoE pathogenesis. We observed an abundance of KLRG1+ ILC2s in the esophagi of healthy mice, with their numbers significantly increasing in murine EoE models and humans. Using a murine EoE model, we demonstrated the recapitulation of EoE-associated features, including basal-cell hyperproliferation, epithelial thickening, and eosinophilia. Notably, these characteristics are absent in ILC-deficient mice, whereas mice lacking IL-5 or eosinophils display epithelial defects, highlighting the pivotal role of ILC2s in EoE pathogenesis. Further investigations revealed increased amphiregulin (Areg) production by esophageal ILC2s in mice. The administration of Areg induced epithelial defects similar to those observed in EoE. Mechanistic studies using human esophageal cell lines revealed Areg-induced phosphorylation of epidermal growth factor receptor (EGFR). Significatntly, treatment with anti-Areg agents and EGFR inhibitors effectively attenuated EoE development, highlighting the therapeutic potential of targeting the Areg-EGFR axis.
{"title":"Esophageal ILC2s mediate abnormal epithelial remodeling in eosinophilic esophagitis via Areg-EGFR signaling","authors":"MinYeong Lim, Taesoo Kim, Hyesung Kim, Bo Gun Jang, Jae Kyung Myung, Hye Young Kim","doi":"10.1038/s41423-024-01242-x","DOIUrl":"10.1038/s41423-024-01242-x","url":null,"abstract":"Eosinophilic esophagitis (EoE) is a chronic allergic disorder characterized by eosinophilia and epithelial thickening, resulting in dysphagia. While emerging evidence implicates increased frequencies of group 2 innate lymphoid cells (ILC2s) and increased interleukin (IL)-33 expression in EoE pathogenesis, the precise mechanisms remain unclear. In this study, we investigated the role of ILC2s in EoE pathogenesis. We observed an abundance of KLRG1+ ILC2s in the esophagi of healthy mice, with their numbers significantly increasing in murine EoE models and humans. Using a murine EoE model, we demonstrated the recapitulation of EoE-associated features, including basal-cell hyperproliferation, epithelial thickening, and eosinophilia. Notably, these characteristics are absent in ILC-deficient mice, whereas mice lacking IL-5 or eosinophils display epithelial defects, highlighting the pivotal role of ILC2s in EoE pathogenesis. Further investigations revealed increased amphiregulin (Areg) production by esophageal ILC2s in mice. The administration of Areg induced epithelial defects similar to those observed in EoE. Mechanistic studies using human esophageal cell lines revealed Areg-induced phosphorylation of epidermal growth factor receptor (EGFR). Significatntly, treatment with anti-Areg agents and EGFR inhibitors effectively attenuated EoE development, highlighting the therapeutic potential of targeting the Areg-EGFR axis.","PeriodicalId":9950,"journal":{"name":"Cellular &Molecular Immunology","volume":"22 1","pages":"97-110"},"PeriodicalIF":21.8,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41423-024-01242-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142799544","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}
{"title":"Children exhibit a robust B-cell response to Omicron BA.2 after breakthrough infection with limited influence from the original antigenic sin","authors":"Zhiyang Ling, Zhangqian Zheng, Lingli Xu, Chunyan Yi, Xinran Dong, Xiaoqiong Gu, Xiaoyu Sun, Bingbing Wu, Bing Sun, Wenhao Zhou","doi":"10.1038/s41423-024-01241-y","DOIUrl":"10.1038/s41423-024-01241-y","url":null,"abstract":"","PeriodicalId":9950,"journal":{"name":"Cellular &Molecular Immunology","volume":"22 1","pages":"127-130"},"PeriodicalIF":21.8,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142766630","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 : 2024-12-03DOI: 10.1038/s41423-024-01240-z
Jingru Tian, Liqing Shi, Dingyao Zhang, Xu Yao, Ming Zhao, Snehlata Kumari, Jun Lu, Di Yu, Qianjin Lu
Systemic lupus erythematosus (SLE) is a complex, multiorgan autoimmune disorder. Although it is widely believed that SLE originates from immune cell dysregulation, the etiology of SLE is not yet clear. Here, we propose a new theory in which SLE can be directly initiated by molecular alterations in keratinocytes rather than immune cells. We found that the level of peroxisome proliferator-activated receptor gamma (PPARγ) is substantially reduced in the skin lesions of patients, and replicating this reduction in mice led to rapid disease onset with multiple hallmarks of SLE. As PPARγ decreases in keratinocytes, which is accompanied by increased occupancy of interferon regulatory factor 3 at the type I interferon locus, dendritic cells (DCs) are recruited to the epidermis and are activated by keratinocyte-secreted type I interferon. These activated DCs migrate to local draining lymph nodes, where they activate CD4+ T cells in a non-MHC II-dependent manner, promoting their differentiation into effector T cells and thus contributing to disease onset. Our study revealed that the dysregulation of keratinocytes can be a pathogenic driver of SLE and describes a new mouse model that mimics human SLE. Our data also emphasize the pivotal role of skin immunity in the onset of systemic autoimmune disease.
{"title":"Dysregulation in keratinocytes drives systemic lupus erythematosus onset","authors":"Jingru Tian, Liqing Shi, Dingyao Zhang, Xu Yao, Ming Zhao, Snehlata Kumari, Jun Lu, Di Yu, Qianjin Lu","doi":"10.1038/s41423-024-01240-z","DOIUrl":"10.1038/s41423-024-01240-z","url":null,"abstract":"Systemic lupus erythematosus (SLE) is a complex, multiorgan autoimmune disorder. Although it is widely believed that SLE originates from immune cell dysregulation, the etiology of SLE is not yet clear. Here, we propose a new theory in which SLE can be directly initiated by molecular alterations in keratinocytes rather than immune cells. We found that the level of peroxisome proliferator-activated receptor gamma (PPARγ) is substantially reduced in the skin lesions of patients, and replicating this reduction in mice led to rapid disease onset with multiple hallmarks of SLE. As PPARγ decreases in keratinocytes, which is accompanied by increased occupancy of interferon regulatory factor 3 at the type I interferon locus, dendritic cells (DCs) are recruited to the epidermis and are activated by keratinocyte-secreted type I interferon. These activated DCs migrate to local draining lymph nodes, where they activate CD4+ T cells in a non-MHC II-dependent manner, promoting their differentiation into effector T cells and thus contributing to disease onset. Our study revealed that the dysregulation of keratinocytes can be a pathogenic driver of SLE and describes a new mouse model that mimics human SLE. Our data also emphasize the pivotal role of skin immunity in the onset of systemic autoimmune disease.","PeriodicalId":9950,"journal":{"name":"Cellular &Molecular Immunology","volume":"22 1","pages":"83-96"},"PeriodicalIF":21.8,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142766649","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 : 2024-12-03DOI: 10.1038/s41423-024-01236-9
Bong Chan Jeon, Yu-Ji Kim, Ae Kyung Park, Mi-Ran Song, Ki Myeong Na, Juwon Lee, Dasom An, Yeseul Park, Heeyoun Hwang, Tae-Don Kim, Junghyun Lim, Sung-Kyun Park
V(D)J recombination secures the production of functional immunoglobulin (Ig) genes and antibody diversity during the early stages of B-cell development through long-distance interactions mediated by cis-regulatory elements and trans-acting factors. O-GlcNAcylation is a dynamic and reversible posttranslational modification of nuclear and cytoplasmic proteins that regulates various protein functions, including DNA-binding affinity and protein–protein interactions. However, the effects of O-GlcNAcylation on proteins involved in V(D)J recombination remain largely unknown. To elucidate this relationship, we downregulated O-GlcNAcylation in a mouse model by administering an O-GlcNAc inhibitor or restricting the consumption of a regular diet. Interestingly, the inhibition of O-GlcNAcylation in mice severely impaired Ig heavy-chain (IgH) gene rearrangement. We identified several factors crucial for V(D)J recombination, including YY1, CTCF, SMC1, and SMC3, as direct targets of O-GlcNAc modification. Importantly, O-GlcNAcylation regulates the physical interaction between SMC1 and SMC3 and the DNA-binding patterns of YY1 at the IgH gene locus. Moreover, O-GlcNAc inhibition downregulated DDX5 protein expression, affecting the functional association of CTCF with its DNA-binding sites at the IgH locus. Our results showed that locus contraction and long-range interactions throughout the IgH locus are disrupted in a manner dependent on the cellular O-GlcNAc level. In this study, we established that V(D)J recombination relies on the O-GlcNAc status of stage-specific proteins during early B-cell development and identified O-GlcNAc-dependent mechanisms as new regulatory components for the development of a diverse antibody repertoire.
{"title":"Dynamic O-GlcNAcylation governs long-range chromatin interactions in V(D)J recombination during early B-cell development","authors":"Bong Chan Jeon, Yu-Ji Kim, Ae Kyung Park, Mi-Ran Song, Ki Myeong Na, Juwon Lee, Dasom An, Yeseul Park, Heeyoun Hwang, Tae-Don Kim, Junghyun Lim, Sung-Kyun Park","doi":"10.1038/s41423-024-01236-9","DOIUrl":"10.1038/s41423-024-01236-9","url":null,"abstract":"V(D)J recombination secures the production of functional immunoglobulin (Ig) genes and antibody diversity during the early stages of B-cell development through long-distance interactions mediated by cis-regulatory elements and trans-acting factors. O-GlcNAcylation is a dynamic and reversible posttranslational modification of nuclear and cytoplasmic proteins that regulates various protein functions, including DNA-binding affinity and protein–protein interactions. However, the effects of O-GlcNAcylation on proteins involved in V(D)J recombination remain largely unknown. To elucidate this relationship, we downregulated O-GlcNAcylation in a mouse model by administering an O-GlcNAc inhibitor or restricting the consumption of a regular diet. Interestingly, the inhibition of O-GlcNAcylation in mice severely impaired Ig heavy-chain (IgH) gene rearrangement. We identified several factors crucial for V(D)J recombination, including YY1, CTCF, SMC1, and SMC3, as direct targets of O-GlcNAc modification. Importantly, O-GlcNAcylation regulates the physical interaction between SMC1 and SMC3 and the DNA-binding patterns of YY1 at the IgH gene locus. Moreover, O-GlcNAc inhibition downregulated DDX5 protein expression, affecting the functional association of CTCF with its DNA-binding sites at the IgH locus. Our results showed that locus contraction and long-range interactions throughout the IgH locus are disrupted in a manner dependent on the cellular O-GlcNAc level. In this study, we established that V(D)J recombination relies on the O-GlcNAc status of stage-specific proteins during early B-cell development and identified O-GlcNAc-dependent mechanisms as new regulatory components for the development of a diverse antibody repertoire.","PeriodicalId":9950,"journal":{"name":"Cellular &Molecular Immunology","volume":"22 1","pages":"68-82"},"PeriodicalIF":21.8,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142766635","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 : 2024-11-22DOI: 10.1038/s41423-024-01239-6
Quazi T. H. Shubhra
{"title":"Gasdermin D unlocks metabolic pathways to enhance tissue regeneration","authors":"Quazi T. H. Shubhra","doi":"10.1038/s41423-024-01239-6","DOIUrl":"10.1038/s41423-024-01239-6","url":null,"abstract":"","PeriodicalId":9950,"journal":{"name":"Cellular &Molecular Immunology","volume":"22 1","pages":"1-3"},"PeriodicalIF":21.8,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142686129","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 : 2024-11-14DOI: 10.1038/s41423-024-01233-y
Xianyi Meng, Sahar Asadi-Asadabad, Shan Cao, Rui Song, Zhen Lin, Mohammed Safhi, Yi Qin, Estelle Tcheumi Tactoum, Verena Taudte, Arif Ekici, Dirk Mielenz, Stefan Wirtz, Georg Schett, Aline Bozec
Germinal centers where B cells undergo clonal expansion and antibody affinity maturation are hypoxic microenvironments. However, the function of hypoxia-inducible factor (HIF)-1α in immunoglobulin production remains incompletely characterized. Here, we demonstrated that B cells lacking HIF-1α exhibited significantly lower glycolytic metabolism and impaired IgA production. Loss of HIF-1α in B cells affects IgA-producing B-cell differentiation and exacerbates dextran sodium sulfate (DSS)-induced colitis. Conversely, promoting HIF-1α stabilization via a PHD inhibitor roxadustat enhances IgA class switching and alleviates intestinal inflammation. Mechanistically, HIF-1α facilitates IgA class switching through acetyl-coenzyme A (acetyl-CoA) accumulation, which is essential for histone H3K27 acetylation at the Sα region. Consequently, supplementation with acetyl-CoA improved defective IgA production in Hif1a-deficient B cells and limited experimental colitis. Collectively, these findings highlight the critical importance of HIF-1α in IgA class switching and the potential for targeting the HIF-1α-dependent metabolic‒epigenetic axis to treat inflammatory bowel diseases and other inflammatory disorders.
B 细胞进行克隆扩增和抗体亲和力成熟的生殖中心是一个缺氧的微环境。然而，低氧诱导因子（HIF）-1α在免疫球蛋白产生过程中的功能仍未完全定性。在这里，我们证明了缺乏 HIF-1α 的 B 细胞表现出明显较低的糖代谢和 IgA 生成障碍。B 细胞中 HIF-1α 的缺失会影响产生 IgA 的 B 细胞分化，并加剧右旋糖酐硫酸钠（DSS）诱导的结肠炎。相反，通过 PHD 抑制剂 roxadustat 促进 HIF-1α 的稳定可增强 IgA 类的转换并缓解肠道炎症。从机理上讲，HIF-1α通过乙酰辅酶A（acetyl-CoA）的积累促进IgA类的转换，而乙酰辅酶A对于组蛋白H3K27在Sα区的乙酰化至关重要。因此，补充乙酰辅酶A可改善Hif1a缺陷B细胞的IgA生成缺陷，并限制实验性结肠炎的发生。总之，这些发现凸显了HIF-1α在IgA类别转换中的关键重要性，以及靶向HIF-1α依赖的代谢-表观遗传轴治疗炎症性肠病和其他炎症性疾病的潜力。
{"title":"Metabolic rewiring controlled by HIF-1α tunes IgA-producing B-cell differentiation and intestinal inflammation","authors":"Xianyi Meng, Sahar Asadi-Asadabad, Shan Cao, Rui Song, Zhen Lin, Mohammed Safhi, Yi Qin, Estelle Tcheumi Tactoum, Verena Taudte, Arif Ekici, Dirk Mielenz, Stefan Wirtz, Georg Schett, Aline Bozec","doi":"10.1038/s41423-024-01233-y","DOIUrl":"10.1038/s41423-024-01233-y","url":null,"abstract":"Germinal centers where B cells undergo clonal expansion and antibody affinity maturation are hypoxic microenvironments. However, the function of hypoxia-inducible factor (HIF)-1α in immunoglobulin production remains incompletely characterized. Here, we demonstrated that B cells lacking HIF-1α exhibited significantly lower glycolytic metabolism and impaired IgA production. Loss of HIF-1α in B cells affects IgA-producing B-cell differentiation and exacerbates dextran sodium sulfate (DSS)-induced colitis. Conversely, promoting HIF-1α stabilization via a PHD inhibitor roxadustat enhances IgA class switching and alleviates intestinal inflammation. Mechanistically, HIF-1α facilitates IgA class switching through acetyl-coenzyme A (acetyl-CoA) accumulation, which is essential for histone H3K27 acetylation at the Sα region. Consequently, supplementation with acetyl-CoA improved defective IgA production in Hif1a-deficient B cells and limited experimental colitis. Collectively, these findings highlight the critical importance of HIF-1α in IgA class switching and the potential for targeting the HIF-1α-dependent metabolic‒epigenetic axis to treat inflammatory bowel diseases and other inflammatory disorders.","PeriodicalId":9950,"journal":{"name":"Cellular &Molecular Immunology","volume":"22 1","pages":"54-67"},"PeriodicalIF":21.8,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41423-024-01233-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142615998","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}
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