Journal of Experimental Medicine最新文献

{"title":"Phosphatidylserine phospholipase A1 enables GPR34-dependent immune cell accumulation in the peritoneal cavity.","authors":"Hanson Tam, Ying Xu, Jinping An, Torsten Schöneberg, Angela Schulz, Jagan R Muppidi, Jason G Cyster","doi":"10.1084/jem.20240992","DOIUrl":"https://doi.org/10.1084/jem.20240992","url":null,"abstract":"<p><p>The peritoneal cavity (PerC) is an important site for immune responses to infection and cancer metastasis. Yet few ligand-receptor axes are known to preferentially govern immune cell accumulation in this compartment. GPR34 is a lysophosphatidylserine (lysoPS)-responsive receptor that frequently harbors gain-of-function mutations in mucosa-associated B cell lymphoma. Here, we set out to test the impact of a GPR34 knock-in (KI) allele in the B-lineage. We report that GPR34 KI promotes the PerC accumulation of plasma cells (PC) and memory B cells (MemB). These KI cells migrate robustly to lysoPS ex vivo, and the KI allele synergizes with a Bcl2 transgene to promote MemB but not PC accumulation. Gene expression and labeling studies reveal that GPR34 KI enhances PerC MemB proliferation. Both KI PC and MemB are specifically enriched at the omentum, a visceral adipose tissue containing fibroblasts that express the lysoPS-generating PLA1A enzyme. Adoptive transfer and chimera experiments revealed that KI PC and MemB maintenance in the PerC is dependent on stromal PLA1A. These findings provide in vivo evidence that PLA1A produces lysoPS that can regulate GPR34-mediated immune cell accumulation at the omentum.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 11","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11488134/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142485925","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":"Targeting TNF/TNFR superfamilies in immune-mediated inflammatory diseases.","authors":"Praveen Krishna Veerasubramanian, Thomas A Wynn, Jie Quan, Fridrik J Karlsson","doi":"10.1084/jem.20240806","DOIUrl":"10.1084/jem.20240806","url":null,"abstract":"<p><p>Dysregulated signaling from TNF and TNFR proteins is implicated in several immune-mediated inflammatory diseases (IMIDs). This review centers around seven IMIDs (rheumatoid arthritis, systemic lupus erythematosus, Crohn's disease, ulcerative colitis, psoriasis, atopic dermatitis, and asthma) with substantial unmet medical needs and sheds light on the signaling mechanisms, disease relevance, and evolving drug development activities for five TNF/TNFR signaling axes that garner substantial drug development interest in these focus conditions. The review also explores the current landscape of therapeutics, emphasizing the limitations of the approved biologics, and the opportunities presented by small-molecule inhibitors and combination antagonists of TNF/TNFR signaling.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 11","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11413425/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142288978","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":"Aberrant pre-mRNA processing in cancer.","authors":"Jeetayu Biswas, Leora Boussi, Eytan Stein, Omar Abdel-Wahab","doi":"10.1084/jem.20230891","DOIUrl":"10.1084/jem.20230891","url":null,"abstract":"<p><p>Dysregulation of the flow of information from genomic DNA to RNA to protein occurs within all cancer types. In this review, we described the current state of understanding of how RNA processing is dysregulated in cancer with a focus on mutations in the RNA splicing factor machinery that are highly prevalent in hematologic malignancies. We discuss the downstream effects of these mutations highlighting both individual genes as well as common pathways that they perturb. We highlight examples of how alterations in RNA processing have been harnessed for therapeutic intent as well as to promote the selective toxicity of cancer cells.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 11","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11448470/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142347956","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":"Transport of β-amyloid from brain to eye causes retinal degeneration in Alzheimer's disease.","authors":"Qiuchen Cao, Shige Yang, Xiaowei Wang, Huaiqing Sun, Weijie Chen, Yuliang Wang, Junying Gao, Yanchi Wu, Qiuhua Yang, Xue Chen, Songtao Yuan, Ming Xiao, Maiken Nedergaard, Yuqing Huo, Qinghuai Liu","doi":"10.1084/jem.20240386","DOIUrl":"10.1084/jem.20240386","url":null,"abstract":"<p><p>The eye is closely connected to the brain, providing a unique window to detect pathological changes in the brain. In this study, we discovered β-amyloid (Aβ) deposits along the ocular glymphatic system in patients with Alzheimer's disease (AD) and 5×FAD transgenic mouse model. Interestingly, Aβ from the brain can flow into the eyes along the optic nerve through cerebrospinal fluid (CSF), causing retinal degeneration. Aβ is mainly observed in the optic nerve sheath, the neural axon, and the perivascular space, which might represent the critical steps of the Aβ transportation from the brain to the eyes. Aquaporin-4 facilitates the influx of Aβ in brain-eye transport and out-excretion of the retina, and its absence or loss of polarity exacerbates brain-derived Aβ induced damage and visual impairment. These results revealed brain-to-eye Aβ transport as a major contributor to AD retinopathy, highlighting a new therapeutic avenue in ocular and neurodegenerative disease.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 11","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11448872/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142307870","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":"Finding NEMO in the thymus.","authors":"Juan Moises Ocampo-Godinez, Alexandra Y Kreins","doi":"10.1084/jem.20241590","DOIUrl":"10.1084/jem.20241590","url":null,"abstract":"<p><p>Rosain et al. (https://doi.org/10.1084/jem.20231152) describe the association between anti-type I interferon autoantibodies and severe viral infections in patients with incontinentia pigmenti and heterozygous loss-of-function NEMO variants, suggesting a role for canonical NF-κB signaling in immune tolerance. The mechanisms behind this selective autoimmunity remain unclear.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 11","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11497410/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142467171","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":"Uniting education, research, healthcare, and society to advance women's heart health.","authors":"Michael Y Schakelaar, Annemieke Maas, Anne-Mar L N van Ommen, Anna E Spiering, Roos de Jonge, Patrick Wijchers, Gerda van Rossum, Balthasar A Heesters, Olivier G de Jong, Jelle Zandveld, Heggert G Rebel, Jan Meeldijk, Emma W Pijnappel, Suzanne van Dijk, Alessia Di Maggio, Olaf Nijssen, Jorine G F Sanders, Lies Hoogerwerf, Mike van Spaandonk, Sandra Crnko, Thijs Koorman, Kevin Jenniskens, N Charlotte Onland-Moret, Stefan M van Geelen, Toine Ten Broeke, Annet van Royen-Kerkhof, Gönül Dilaver, Sabrina Oliveira, Robbert J Kok, Linda W van Laake, Pim van der Harst, Wilko Spiering, Frans H Rutten, Marco van Brussel, Hester M den Ruijter, Niels Bovenschen","doi":"10.1084/jem.20240877","DOIUrl":"https://doi.org/10.1084/jem.20240877","url":null,"abstract":"<p><p>Complex health challenges require professionals to operate across disciplines and to better connect with society. Here, we showcase a community-engaged and challenge-based educational model in which undergraduate students conduct transdisciplinary research on authentic complex biomedical problems. This concept reinforces translational medicine, human capital, and exemplifies synergy between education, research, healthcare, and society.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 11","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11486828/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142467174","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":"The brain-eye connection: More than just action potentials.","authors":"James Walsh","doi":"10.1084/jem.20241519","DOIUrl":"https://doi.org/10.1084/jem.20241519","url":null,"abstract":"<p><p>In this issue of the Journal of Experimental Medicine, Cao et al. (https://doi.org/10.1084/jem.20240386) demonstrate that the connection between the eye and the brain goes beyond the impulses carried by the optic nerve and that in Alzheimer's disease (AD), the influx of toxic Aβ from the brain to the retina underlies AD-induced retinal degeneration.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 11","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11471833/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142485926","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":"NFAT5 governs cellular plasticity-driven resistance to KRAS-targeted therapy in pancreatic cancer.","authors":"Daiyong Deng, Habeebunnisa Begum, Tong Liu, Jiangyan Zhang, Qiang Zhang, Ting-Yu Chu, Hong Li, Alexander Lemenze, Mainul Hoque, Patricia Soteropoulos, Pingping Hou","doi":"10.1084/jem.20240766","DOIUrl":"10.1084/jem.20240766","url":null,"abstract":"<p><p>Resistance to KRAS therapy in pancreatic ductal adenocarcinoma (PDAC) involves cellular plasticity, particularly the epithelial-to-mesenchymal transition (EMT), which poses challenges for effective targeting. Chronic pancreatitis, a known risk factor for PDAC, elevates TGFβ levels in the tumor microenvironment (TME), promoting resistance to KRAS therapy. Mechanistically, TGFβ induces the formation of a novel protein complex composed of SMAD3, SMAD4, and the nuclear factor NFAT5, triggering EMT and resistance by activating key mediators such as S100A4. Inhibiting NFAT5 attenuates pancreatitis-induced resistance to KRAS inhibition and extends mouse survival. Additionally, TGFβ stimulates PDAC cells to secrete CCL2, recruiting macrophages that contribute to KRAS bypass through paracrine S100A4. Our findings elucidate the role of TGFβ signaling in EMT-associated KRAS therapy resistance and identify NFAT5 as a druggable target. Targeting NFAT5 could disrupt this regulatory network, offering a potential avenue for preventing resistance in PDAC.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 11","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11497412/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142467172","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":"IMPA1-derived inositol maintains stemness in castration-resistant prostate cancer via IMPDH2 activation.","authors":"Che-Chia Hsu, Guihua Wang, Chien-Feng Li, Xian Zhang, Zhen Cai, Tingjin Chen, Bo-Syong Pan, Rajesh Kumar Manne, Gagan Deep, Haiwei Gu, Yuzhuo Wang, Danni Peng, Vasudevarao Penugurti, Xiaobo Zhou, Zhigang Xu, Zhongzhu Chen, Ming Chen, Andrew J Armstrong, Jiaoti Huang, Hong-Yu Li, Hui-Kuan Lin","doi":"10.1084/jem.20231832","DOIUrl":"10.1084/jem.20231832","url":null,"abstract":"<p><p>Acquisition of prostate cancer stem cells (PCSCs) manifested during androgen ablation therapy (ABT) contributes to castration-resistant prostate cancer (CRPC). However, little is known about the specific metabolites critically orchestrating this process. Here, we show that IMPA1-derived inositol enriched in PCSCs is a key metabolite crucially maintaining PCSCs for CRPC progression and ABT resistance. Notably, conditional Impa1 knockout in the prostate abrogates the pool and properties of PCSCs to orchestrate CRPC progression and prolong the survival of TRAMP mice. IMPA1-derived inositol serves as a cofactor that directly binds to and activates IMPDH2, which synthesizes guanylate nucleotides for maintaining PCSCs with ARlow/- features leading to CRPC progression and ABT resistance. IMPA1/inositol/IMPDH2 axis is upregulated in human prostate cancer, and its overexpression predicts poor survival outcomes. Genetically and pharmacologically targeting the IMPA1/inositol/IMPDH2 axis abrogates CRPC and overcomes ABT resistance in various CRPC xenografts, patient-derived xenograft (PDX) tumor models, and TRAMP mouse models. Our study identifies IMPDH2 as an inositol sensor whose activation by inositol represents a key mechanism for maintaining PCSCs for CRPC and ABT resistance.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 11","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11528126/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142521983","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":"Incontinentia pigmenti underlies thymic dysplasia, autoantibodies to type I IFNs, and viral diseases.","authors":"Jérémie Rosain, Tom Le Voyer, Xian Liu, Adrian Gervais, Laura Polivka, Axel Cederholm, Laureline Berteloot, Audrey V Parent, Alessandra Pescatore, Ezia Spinosa, Snezana Minic, Ana Elisa Kiszewski, Miyuki Tsumura, Chloé Thibault, Maria Esnaola Azcoiti, Jelena Martinovic, Quentin Philippot, Taushif Khan, Astrid Marchal, Bénédicte Charmeteau-De Muylder, Lucy Bizien, Caroline Deswarte, Lillia Hadjem, Marie-Odile Fauvarque, Karim Dorgham, Daniel Eriksson, Emilia Liana Falcone, Mathilde Puel, Sinem Ünal, Amyrath Geraldo, Corentin Le Floc'h, Hailun Li, Sylvie Rheault, Christine Muti, Claire Bobrie-Moyrand, Anne Welfringer-Morin, Ramsay L Fuleihan, Romain Lévy, Marie Roelens, Liwei Gao, Marie Materna, Silvia Pellegrini, Lorenzo Piemonti, Emilie Catherinot, Jean-Christophe Goffard, Arnaud Fekkar, Aissata Sacko-Sow, Camille Soudée, Soraya Boucherit, Anna-Lena Neehus, Cristina Has, Stefanie Hübner, Géraldine Blanchard-Rohner, Blanca Amador-Borrero, Takanori Utsumi, Maki Taniguchi, Hiroo Tani, Kazushi Izawa, Takahiro Yasumi, Sotaro Kanai, Mélanie Migaud, Mélodie Aubart, Nathalie Lambert, Guy Gorochov, Capucine Picard, Claire Soudais, Anne-Sophie L'Honneur, Flore Rozenberg, Joshua D Milner, Shen-Ying Zhang, Pierre Vabres, Dusan Trpinac, Nico Marr, Nathalie Boddaert, Isabelle Desguerre, Manolis Pasparakis, Corey N Miller, Cláudia S Poziomczyk, Laurent Abel, Satoshi Okada, Emmanuelle Jouanguy, Rémi Cheynier, Qian Zhang, Aurélie Cobat, Vivien Béziat, Bertrand Boisson, Julie Steffann, Francesca Fusco, Matilde Valeria Ursini, Smail Hadj-Rabia, Christine Bodemer, Jacinta Bustamante, Hervé Luche, Anne Puel, Gilles Courtois, Paul Bastard, Nils Landegren, Mark S Anderson, Jean-Laurent Casanova","doi":"10.1084/jem.20231152","DOIUrl":"10.1084/jem.20231152","url":null,"abstract":"<p><p>Human inborn errors of thymic T cell tolerance underlie the production of autoantibodies (auto-Abs) neutralizing type I IFNs, which predispose to severe viral diseases. We analyze 131 female patients with X-linked dominant incontinentia pigmenti (IP), heterozygous for loss-of-function (LOF) NEMO variants, from 99 kindreds in 10 countries. Forty-seven of these patients (36%) have auto-Abs neutralizing IFN-α and/or IFN-ω, a proportion 23 times higher than that for age-matched female controls. This proportion remains stable from the age of 6 years onward. On imaging, female patients with IP have a small, abnormally structured thymus. Auto-Abs against type I IFNs confer a predisposition to life-threatening viral diseases. By contrast, patients with IP lacking auto-Abs against type I IFNs are at no particular risk of viral disease. These results suggest that IP accelerates thymic involution, thereby underlying the production of auto-Abs neutralizing type I IFNs in at least a third of female patients with IP, predisposing them to life-threatening viral diseases.</p>","PeriodicalId":15760,"journal":{"name":"Journal of Experimental Medicine","volume":"221 11","pages":""},"PeriodicalIF":12.6,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11448874/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142347957","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}