Journal of Experimental Medicine最新文献

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Iron TAMs: The fallen protectors. 铁甲塔姆:堕落的保护者
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2024-10-07 Epub Date: 2024-09-30 DOI: 10.1084/jem.20240951
Lijuan Sun, Mikala Egeblad
{"title":"Iron TAMs: The fallen protectors.","authors":"Lijuan Sun, Mikala Egeblad","doi":"10.1084/jem.20240951","DOIUrl":"10.1084/jem.20240951","url":null,"abstract":"<p><p>A new study by Folkert et al. (https://doi.org/10.1084/jem.20230420) defines an \"iron-rich\" subset of tumor-associated macrophages (iTAMs). The metabolism of heme leads to the degradation of the transcriptional repressor Bach1 and shapes the transcriptional profile of iTAMs. The endothelin receptor B in iTAMs signals tumor-supportive functions.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 10","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11441312/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142347954","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
SETD1B mutations confer apoptosis resistance and BCL2 independence in B cell lymphoma. SETD1B 突变使 B 细胞淋巴瘤具有抗凋亡性和 BCL2 独立性。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2024-10-07 Epub Date: 2024-09-05 DOI: 10.1084/jem.20231143
Ana Portelinha, Shenqiu Wang, Sara Parsa, Man Jiang, Alexander N Gorelick, Sagarajit Mohanty, Soumya Sharma, Elisa de Stanchina, Marjan Berishaj, Chunying Zhao, James Heward, Neeraj K Aryal, Omid Tavana, Jiayu Wen, Jude Fitzgibbon, Ahmet Dogan, Anas Younes, Ari M Melnick, Hans-Guido Wendel
{"title":"SETD1B mutations confer apoptosis resistance and BCL2 independence in B cell lymphoma.","authors":"Ana Portelinha, Shenqiu Wang, Sara Parsa, Man Jiang, Alexander N Gorelick, Sagarajit Mohanty, Soumya Sharma, Elisa de Stanchina, Marjan Berishaj, Chunying Zhao, James Heward, Neeraj K Aryal, Omid Tavana, Jiayu Wen, Jude Fitzgibbon, Ahmet Dogan, Anas Younes, Ari M Melnick, Hans-Guido Wendel","doi":"10.1084/jem.20231143","DOIUrl":"10.1084/jem.20231143","url":null,"abstract":"<p><p>The translocation t(14;18) activates BCL2 and is considered the initiating genetic lesion in most follicular lymphomas (FL). Surprisingly, FL patients fail to respond to the BCL2 inhibitor, Venetoclax. We show that mutations and deletions affecting the histone lysine methyltransferase SETD1B (KMT2G) occur in 7% of FLs and 16% of diffuse large B cell lymphomas (DLBCL). Deficiency in SETD1B confers striking resistance to Venetoclax and an experimental MCL-1 inhibitor. SETD1B also acts as a tumor suppressor and cooperates with the loss of KMT2D in lymphoma development in vivo. Consistently, loss of SETD1B in human lymphomas typically coincides with loss of KMT2D. Mechanistically, SETD1B is required for the expression of several proapoptotic BCL2 family proteins. Conversely, inhibitors of the KDM5 histone H3K4 demethylases restore BIM and BIK expression and synergize with Venetoclax in SETD1B-deficient lymphomas. These results establish SETD1B as an epigenetic regulator of cell death and reveal a pharmacological strategy to augment Venetoclax sensitivity in lymphoma.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 10","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11380151/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142132924","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
Modeling memory B cell responses in a lymphoid organ-chip to evaluate mRNA vaccine boosting. 在淋巴器官芯片中模拟记忆性 B 细胞反应,以评估 mRNA 疫苗的增效作用。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2024-10-07 Epub Date: 2024-09-06 DOI: 10.1084/jem.20240289
Raphaël Jeger-Madiot, Delphine Planas, Isabelle Staropoli, Hippolyte Debarnot, Jérôme Kervevan, Héloïse Mary, Camilla Collina, Barbara F Fonseca, Rémy Robinot, Stacy Gellenoncourt, Olivier Schwartz, Lorna Ewart, Michael Bscheider, Samy Gobaa, Lisa A Chakrabarti
{"title":"Modeling memory B cell responses in a lymphoid organ-chip to evaluate mRNA vaccine boosting.","authors":"Raphaël Jeger-Madiot, Delphine Planas, Isabelle Staropoli, Hippolyte Debarnot, Jérôme Kervevan, Héloïse Mary, Camilla Collina, Barbara F Fonseca, Rémy Robinot, Stacy Gellenoncourt, Olivier Schwartz, Lorna Ewart, Michael Bscheider, Samy Gobaa, Lisa A Chakrabarti","doi":"10.1084/jem.20240289","DOIUrl":"10.1084/jem.20240289","url":null,"abstract":"<p><p>Predicting the immunogenicity of candidate vaccines in humans remains a challenge. To address this issue, we developed a lymphoid organ-chip (LO chip) model based on a microfluidic chip seeded with human PBMC at high density within a 3D collagen matrix. Perfusion of the SARS-CoV-2 spike protein mimicked a vaccine boost by inducing a massive amplification of spike-specific memory B cells, plasmablast differentiation, and spike-specific antibody secretion. Features of lymphoid tissue, including the formation of activated CD4+ T cell/B cell clusters and the emigration of matured plasmablasts, were recapitulated in the LO chip. Importantly, myeloid cells were competent at capturing and expressing mRNA vectored by lipid nanoparticles, enabling the assessment of responses to mRNA vaccines. Comparison of on-chip responses to Wuhan monovalent and Wuhan/Omicron bivalent mRNA vaccine boosts showed equivalent induction of Omicron neutralizing antibodies, pointing at immune imprinting as reported in vivo. The LO chip thus represents a versatile platform suited to the preclinical evaluation of vaccine-boosting strategies.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 10","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11383861/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142140214","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
Autoantibodies neutralizing type I IFNs underlie severe tick-borne encephalitis in ∼10% of patients. 中和 I 型 IFNs 的自身抗体是 10% 的重症蜱传脑炎患者的病因。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2024-10-07 Epub Date: 2024-09-24 DOI: 10.1084/jem.20240637
Adrian Gervais, Astrid Marchal, Andrea Fortova, Michaela Berankova, Lenka Krbkova, Martina Pychova, Jiri Salat, Shuxiang Zhao, Nacim Kerrouche, Tom Le Voyer, Karin Stiasny, Simon Raffl, Anne Schieber Pachart, Samira Fafi-Kremer, Simon Gravier, Davide F Robbiani, Laurent Abel, Margaret R MacDonald, Charles M Rice, Gaia Weissmann, Tarek Kamal Eldin, Eva Robatscher, Elke Maria Erne, Elisabetta Pagani, Alessandro Borghesi, Anne Puel, Paul Bastard, Aurélie Velay, Martin Martinot, Yves Hansmann, Judith H Aberle, Daniel Ruzek, Aurélie Cobat, Shen-Ying Zhang, Jean-Laurent Casanova
{"title":"Autoantibodies neutralizing type I IFNs underlie severe tick-borne encephalitis in ∼10% of patients.","authors":"Adrian Gervais, Astrid Marchal, Andrea Fortova, Michaela Berankova, Lenka Krbkova, Martina Pychova, Jiri Salat, Shuxiang Zhao, Nacim Kerrouche, Tom Le Voyer, Karin Stiasny, Simon Raffl, Anne Schieber Pachart, Samira Fafi-Kremer, Simon Gravier, Davide F Robbiani, Laurent Abel, Margaret R MacDonald, Charles M Rice, Gaia Weissmann, Tarek Kamal Eldin, Eva Robatscher, Elke Maria Erne, Elisabetta Pagani, Alessandro Borghesi, Anne Puel, Paul Bastard, Aurélie Velay, Martin Martinot, Yves Hansmann, Judith H Aberle, Daniel Ruzek, Aurélie Cobat, Shen-Ying Zhang, Jean-Laurent Casanova","doi":"10.1084/jem.20240637","DOIUrl":"10.1084/jem.20240637","url":null,"abstract":"<p><p>Tick-borne encephalitis (TBE) virus (TBEV) is transmitted to humans via tick bites. Infection is benign in >90% of the cases but can cause mild (<5%), moderate (<4%), or severe (<1%) encephalitis. We show here that ∼10% of patients hospitalized for severe TBE in cohorts from Austria, Czech Republic, and France carry auto-Abs neutralizing IFN-α2, -β, and/or -ω at the onset of disease, contrasting with only ∼1% of patients with moderate and mild TBE. These auto-Abs were found in two of eight patients who died and none of 13 with silent infection. The odds ratios (OR) for severe TBE in individuals with these auto-Abs relative to those without them in the general population were 4.9 (95% CI: 1.5-15.9, P < 0.0001) for the neutralization of only 100 pg/ml IFN-α2 and/or -ω, and 20.8 (95% CI: 4.5-97.4, P < 0.0001) for the neutralization of 10 ng/ml IFN-α2 and -ω. Auto-Abs neutralizing type I IFNs accounted for ∼10% of severe TBE cases in these three European cohorts.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 10","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11448868/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142307869","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
Precursor central memory versus effector cell fate and naïve CD4+ T cell heterogeneity. 前体中央记忆细胞与效应细胞的命运以及幼稚 CD4+ T 细胞的异质性。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2024-10-07 Epub Date: 2024-09-25 DOI: 10.1084/jem.20231193
Deeksha Deep, Herman Gudjonson, Chrysothemis C Brown, Samuel A Rose, Roshan Sharma, Yoselin A Paucar Iza, Seunghee Hong, Saskia Hemmers, Michail Schizas, Zhong-Min Wang, Yuezhou Chen, Duane R Wesemann, Virginia Pascual, Dana Pe'er, Alexander Y Rudensky
{"title":"Precursor central memory versus effector cell fate and naïve CD4+ T cell heterogeneity.","authors":"Deeksha Deep, Herman Gudjonson, Chrysothemis C Brown, Samuel A Rose, Roshan Sharma, Yoselin A Paucar Iza, Seunghee Hong, Saskia Hemmers, Michail Schizas, Zhong-Min Wang, Yuezhou Chen, Duane R Wesemann, Virginia Pascual, Dana Pe'er, Alexander Y Rudensky","doi":"10.1084/jem.20231193","DOIUrl":"10.1084/jem.20231193","url":null,"abstract":"<p><p>Upon antigenic stimulation, naïve CD4+ T cells can give rise to phenotypically distinct effector T helper cells and long-lived memory T cells. We computationally reconstructed the in vivo trajectory of CD4+ T cell differentiation during a type I inflammatory immune response and identified two distinct differentiation paths for effector and precursor central memory T cells arising directly from naïve CD4+ T cells. Unexpectedly, our studies revealed heterogeneity among naïve CD4+ T cells, which are typically considered homogeneous save for their diverse T cell receptor usage. Specifically, a previously unappreciated population of naïve CD4+ T cells sensing environmental type I IFN exhibited distinct activation thresholds, suggesting that naïve CD4+ T cell differentiation potential may be influenced by environmental cues. This population was expanded in human viral infection and type I IFN response-lined autoimmunity. Understanding the relevance of naïve T cell heterogeneity to beneficial and maladaptive T cell responses may have therapeutic implications for adoptive T cell therapies in cancer immunotherapy and vaccination.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 10","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11448869/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142347955","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
Generation and repair of thymic epithelial cells. 胸腺上皮细胞的生成与修复
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2024-10-07 Epub Date: 2024-07-09 DOI: 10.1084/jem.20230894
Graham Anderson, Emilie J Cosway, Kieran D James, Izumi Ohigashi, Yousuke Takahama
{"title":"Generation and repair of thymic epithelial cells.","authors":"Graham Anderson, Emilie J Cosway, Kieran D James, Izumi Ohigashi, Yousuke Takahama","doi":"10.1084/jem.20230894","DOIUrl":"10.1084/jem.20230894","url":null,"abstract":"<p><p>In the vertebrate immune system, thymus stromal microenvironments support the generation of αβT cells from immature thymocytes. Thymic epithelial cells are of particular importance, and the generation of cortical and medullary epithelial lineages from progenitor stages controls the initiation and maintenance of thymus function. Here, we discuss the developmental pathways that regulate thymic epithelial cell diversity during both the embryonic and postnatal periods. We also examine how thymus microenvironments respond to injury, with particular focus on mechanisms that ensure regeneration of thymic epithelial cells for the restoration of thymus function.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 10","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11232892/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141558879","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
Loss of ARID3A perturbs intestinal epithelial proliferation-differentiation ratio and regeneration. ARID3A的缺失会扰乱肠上皮细胞的增殖-分化比率和再生。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2024-10-07 Epub Date: 2024-08-16 DOI: 10.1084/jem.20232279
Nikolaos Angelis, Anna Baulies, Florian Hubl, Anna Kucharska, Gavin Kelly, Miriam Llorian, Stefan Boeing, Vivian S W Li
{"title":"Loss of ARID3A perturbs intestinal epithelial proliferation-differentiation ratio and regeneration.","authors":"Nikolaos Angelis, Anna Baulies, Florian Hubl, Anna Kucharska, Gavin Kelly, Miriam Llorian, Stefan Boeing, Vivian S W Li","doi":"10.1084/jem.20232279","DOIUrl":"10.1084/jem.20232279","url":null,"abstract":"<p><p>Intestinal stem cells at the crypt divide and give rise to progenitor cells that proliferate and differentiate into various mature cell types in the transit-amplifying (TA) zone. Here, we showed that the transcription factor ARID3A regulates intestinal epithelial cell proliferation and differentiation at the TA progenitors. ARID3A forms an expression gradient from the villus tip to the upper crypt mediated by TGF-β and WNT. Intestinal-specific deletion of Arid3a reduces crypt proliferation, predominantly in TA cells. Bulk and single-cell transcriptomic analysis shows increased enterocyte and reduced secretory differentiation in the Arid3a cKO intestine, accompanied by enriched upper-villus gene signatures of both cell lineages. We find that the enhanced epithelial differentiation in the Arid3a-deficient intestine is caused by increased binding and transcription of HNF1 and HNF4. Finally, we show that loss of Arid3a impairs irradiation-induced regeneration with sustained cell death and reprogramming. Our findings imply that Arid3a functions to fine-tune the proliferation-differentiation dynamics at the TA progenitors, which are essential for injury-induced regeneration.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 10","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11329776/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141988052","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
Rediscovering the human thymus through cutting-edge technologies. 通过尖端技术重新发现人类胸腺。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2024-10-07 Epub Date: 2024-08-21 DOI: 10.1084/jem.20230892
Francesca Pala, Luigi D Notarangelo, Marita Bosticardo
{"title":"Rediscovering the human thymus through cutting-edge technologies.","authors":"Francesca Pala, Luigi D Notarangelo, Marita Bosticardo","doi":"10.1084/jem.20230892","DOIUrl":"10.1084/jem.20230892","url":null,"abstract":"<p><p>Recent technological advances have transformed our understanding of the human thymus. Innovations such as high-resolution imaging, single-cell omics, and organoid cultures, including thymic epithelial cell (TEC) differentiation and culture, and improvements in biomaterials, have further elucidated the thymus architecture, cellular dynamics, and molecular mechanisms underlying T cell development, and have unraveled previously unrecognized levels of stromal cell heterogeneity. These advancements offer unprecedented insights into thymic biology and hold promise for the development of novel therapeutic strategies for immune-related disorders.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 10","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11338284/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142017640","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
RAC2 gain-of-function variants causing inborn error of immunity drive NLRP3 inflammasome activation. 导致先天性免疫错误的 RAC2 功能增益变异驱动 NLRP3 炎症小体激活。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2024-10-07 Epub Date: 2024-08-30 DOI: 10.1084/jem.20231562
Anne Doye, Paul Chaintreuil, Chantal Lagresle-Peyrou, Ludovic Batistic, Valentine Marion, Patrick Munro, Celine Loubatier, Rayana Chirara, Nataël Sorel, Boris Bessot, Pauline Bronnec, Julie Contenti, Johan Courjon, Valerie Giordanengo, Arnaud Jacquel, Pascal Barbry, Marie Couralet, Nathalie Aladjidi, Alain Fischer, Marina Cavazzana, Coralie Mallebranche, Orane Visvikis, Sven Kracker, Despina Moshous, Els Verhoeyen, Laurent Boyer
{"title":"RAC2 gain-of-function variants causing inborn error of immunity drive NLRP3 inflammasome activation.","authors":"Anne Doye, Paul Chaintreuil, Chantal Lagresle-Peyrou, Ludovic Batistic, Valentine Marion, Patrick Munro, Celine Loubatier, Rayana Chirara, Nataël Sorel, Boris Bessot, Pauline Bronnec, Julie Contenti, Johan Courjon, Valerie Giordanengo, Arnaud Jacquel, Pascal Barbry, Marie Couralet, Nathalie Aladjidi, Alain Fischer, Marina Cavazzana, Coralie Mallebranche, Orane Visvikis, Sven Kracker, Despina Moshous, Els Verhoeyen, Laurent Boyer","doi":"10.1084/jem.20231562","DOIUrl":"10.1084/jem.20231562","url":null,"abstract":"<p><p>A growing number of patients presenting severe combined immunodeficiencies attributed to monoallelic RAC2 variants have been identified. The expression of the RHO GTPase RAC2 is restricted to the hematopoietic lineage. RAC2 variants have been described to cause immunodeficiencies associated with high frequency of infection, leukopenia, and autoinflammatory features. Here, we show that specific RAC2 activating mutations induce the NLRP3 inflammasome activation leading to the secretion of IL-1β and IL-18 from macrophages. This activation depends on the activation state of the RAC2 variant and is mediated by the downstream kinase PAK1. Inhibiting the RAC2-PAK1-NLRP3 inflammasome pathway might be considered as a potential treatment for these patients.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 10","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11363864/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142108002","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
An iron-rich subset of macrophages promotes tumor growth through a Bach1-Ednrb axis. 巨噬细胞中富含铁的亚群通过 Bach1-Ednrb 轴促进肿瘤生长。
IF 12.6 1区 医学
Journal of Experimental Medicine Pub Date : 2024-10-07 Epub Date: 2024-09-30 DOI: 10.1084/jem.20230420
Ian W Folkert, William A Molina Arocho, Tsun Ki Jerrick To, Samir Devalaraja, Irene S Molina, Jason Shoush, Hesham Mohei, Li Zhai, Md Naushad Akhtar, Veena Kochat, Emre Arslan, Alexander J Lazar, Khalida Wani, William P Israel, Zhan Zhang, Venkata S Chaluvadi, Robert J Norgard, Ying Liu, Ashley M Fuller, Mai T Dang, Robert E Roses, Giorgos C Karakousis, John T Miura, Douglas L Fraker, T S Karin Eisinger-Mathason, M Celeste Simon, Kristy Weber, Kai Tan, Yi Fan, Kunal Rai, Malay Haldar
{"title":"An iron-rich subset of macrophages promotes tumor growth through a Bach1-Ednrb axis.","authors":"Ian W Folkert, William A Molina Arocho, Tsun Ki Jerrick To, Samir Devalaraja, Irene S Molina, Jason Shoush, Hesham Mohei, Li Zhai, Md Naushad Akhtar, Veena Kochat, Emre Arslan, Alexander J Lazar, Khalida Wani, William P Israel, Zhan Zhang, Venkata S Chaluvadi, Robert J Norgard, Ying Liu, Ashley M Fuller, Mai T Dang, Robert E Roses, Giorgos C Karakousis, John T Miura, Douglas L Fraker, T S Karin Eisinger-Mathason, M Celeste Simon, Kristy Weber, Kai Tan, Yi Fan, Kunal Rai, Malay Haldar","doi":"10.1084/jem.20230420","DOIUrl":"10.1084/jem.20230420","url":null,"abstract":"<p><p>We define a subset of macrophages in the tumor microenvironment characterized by high intracellular iron and enrichment of heme and iron metabolism genes. These iron-rich tumor-associated macrophages (iTAMs) supported angiogenesis and immunosuppression in the tumor microenvironment and were conserved between mice and humans. iTAMs comprise two additional subsets based on gene expression profile and location-perivascular (pviTAM) and stromal (stiTAM). We identified the endothelin receptor type B (Ednrb) as a specific marker of iTAMs and found myeloid-specific deletion of Ednrb to reduce tumor growth and vascular density. Further studies identified the transcription factor Bach1 as a repressor of the iTAM transcriptional program, including Ednrb expression. Heme is a known inhibitor of Bach1, and, correspondingly, heme exposure induced Ednrb and iTAM signature genes in macrophages. Thus, iTAMs are a distinct macrophage subset regulated by the transcription factor Bach1 and characterized by Ednrb-mediated immunosuppressive and angiogenic functions.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 10","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11457473/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142347953","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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