{"title":"Pyrimidine addiction: an Achilles' heel of NF2-altered mesothelioma.","authors":"Jianlong Jia,Georgios T Stathopoulos","doi":"10.1038/s44321-025-00276-6","DOIUrl":"https://doi.org/10.1038/s44321-025-00276-6","url":null,"abstract":"","PeriodicalId":11597,"journal":{"name":"EMBO Molecular Medicine","volume":"15 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144701215","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}
Duo Xu,Yanyun Gao,Shengchen Liu,Shiyuan Yin,Tong Hu,Haibin Deng,Tuo Zhang,Balazs Hegedüs,Thomas M Marti,Patrick Dorn,Shun-Qing Liang,Ralph A Schmid,Ren-Wang Peng,Yongqian Shu
{"title":"De novo pyrimidine synthesis is a collateral metabolic vulnerability in NF2-deficient mesothelioma.","authors":"Duo Xu,Yanyun Gao,Shengchen Liu,Shiyuan Yin,Tong Hu,Haibin Deng,Tuo Zhang,Balazs Hegedüs,Thomas M Marti,Patrick Dorn,Shun-Qing Liang,Ralph A Schmid,Ren-Wang Peng,Yongqian Shu","doi":"10.1038/s44321-025-00278-4","DOIUrl":"https://doi.org/10.1038/s44321-025-00278-4","url":null,"abstract":"Pleural mesothelioma (PM) is one of the deadliest cancers, with limited therapeutic options due to its therapeutically intractable genome, which is characterized by the functional inactivation of tumor suppressor genes (TSGs) and high tumor heterogeneity, including diverse metabolic adaptations. However, the molecular mechanisms underlying these metabolic alterations remain poorly understood, particularly how TSG inactivation rewires tumor metabolism to drive tumorigenesis and create metabolic dependencies. Through integrated multi-omics analysis, we identify for the first time that NF2 loss of function defines a distinct PM subtype characterized by enhanced de novo pyrimidine synthesis, which NF2-deficient PM cells are critically dependent on for sustained proliferation in vitro and in vivo. Mechanistically, NF2 loss activates YAP, a downstream proto-oncogenic transcriptional coactivator in the Hippo signalling pathway, which in turn upregulates CAD and DHODH, key enzymes in the de novo pyrimidine biosynthesis pathway. Our findings provide novel insights into metabolic reprogramming in PM, revealing de novo pyrimidine synthesis as a synthetic lethal vulnerability in NF2-deficient tumors. This work highlights a potential therapeutic strategy for targeting NF2-deficient mesothelioma through metabolic intervention.","PeriodicalId":11597,"journal":{"name":"EMBO Molecular Medicine","volume":"34 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144701214","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}
{"title":"miR-33 inhibition as a novel therapeutic approach for treating muscular dystrophy.","authors":"Michael A Lopez,Matthew S Alexander","doi":"10.1038/s44321-025-00271-x","DOIUrl":"https://doi.org/10.1038/s44321-025-00271-x","url":null,"abstract":"","PeriodicalId":11597,"journal":{"name":"EMBO Molecular Medicine","volume":"5 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144684149","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}
Fran Prenen,Leen Vandermosten,Sofie Knoops,Emilie Pollenus,Hendrik Possemiers,Pauline Dagneau de Richecour,Giorgio Caratti,Christopher Cawthorne,Sabine Vettorazzi,Yevva Cranshoff,Dominique Schols,Sandra Claes,Christophe M Deroose,Uwe Himmelreich,Jan Tuckermann,Philippe E Van den Steen
{"title":"JAK/STAT inhibition protects glucocorticoid receptor knockout mice from lethal malaria-induced hypoglycemia and hyperinflammation.","authors":"Fran Prenen,Leen Vandermosten,Sofie Knoops,Emilie Pollenus,Hendrik Possemiers,Pauline Dagneau de Richecour,Giorgio Caratti,Christopher Cawthorne,Sabine Vettorazzi,Yevva Cranshoff,Dominique Schols,Sandra Claes,Christophe M Deroose,Uwe Himmelreich,Jan Tuckermann,Philippe E Van den Steen","doi":"10.1038/s44321-025-00264-w","DOIUrl":"https://doi.org/10.1038/s44321-025-00264-w","url":null,"abstract":"Disease tolerance is a key defense mechanism that limits damage to the host without directly reducing pathogen levels. In malaria, these mechanisms are essential for preventing severe disease and death but remain poorly understood. In this study, we show that glucocorticoid receptor (GR)-mediated processes play a vital role in disease tolerance during Plasmodium chabaudi AS infection. GR deletion in infected mice resulted in lethal hypoglycemia and a cytokine storm. Hypoglycemia was driven by severe metabolic dysfunction in the liver and spleen, characterized by increased glucose uptake, glycogen depletion, a dominant glycolytic profile and reduced gluconeogenic gene expression. Importantly, this hypoglycemic state was strongly associated with overactivation of the JAK/STAT pathway and excessive cytokine expression. Treatment with the JAK1/2 inhibitor ruxolitinib significantly improved survival by preventing lethal hypoglycemia and suppressing hyperinflammation. Our findings reveal a novel link between GR signaling, STAT3 activation, cytokine expression and glucose metabolism during severe malaria. This underscores the critical role of GR-mediated processes in disease tolerance and highlights ruxolitinib as a promising adjuvant therapy for managing life-threatening metabolic complications in malaria.","PeriodicalId":11597,"journal":{"name":"EMBO Molecular Medicine","volume":"17 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144693512","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}
{"title":"MicroRNA-33 inhibition ameliorates muscular dystrophy by enhancing skeletal muscle regeneration.","authors":"Naoya Sowa,Takahiro Horie,Yuya Ide,Osamu Baba,Kengo Kora,Takeshi Yoshida,Yujiro Nakamura,Shigenobu Matsumura,Kazuki Matsushita,Miyako Imanaka,Fuquan Zou,Eitaro Kume,Hidenori Kojima,Qiuxian Qian,Kayo Kimura,Ryotaro Otsuka,Noriko Hara,Tomohiro Yamasaki,Chiharu Otani,Yuta Tsujisaka,Tomohide Takaya,Chika Nishimura,Dai Watanabe,Koji Hasegawa,Jun Kotera,Kozo Oka,Ryo Fujita,Akihiro Takemiya,Takashi Sasaki,Yuuya Kasahara,Satoshi Obika,Takeshi Kimura,Koh Ono","doi":"10.1038/s44321-025-00273-9","DOIUrl":"https://doi.org/10.1038/s44321-025-00273-9","url":null,"abstract":"Muscular dystrophy is a group of diseases characterized by progressive weakness and degeneration of skeletal muscles, for which there is currently no cure. Here, we show that microRNA (miR)-33a/b play a crucial role in muscle regeneration. miR-33a was upregulated during myoblast differentiation and in skeletal muscles of mdx mice, a genetic model of Duchenne muscular dystrophy (DMD). miR-33a deficiency enhanced muscle regeneration response to cardiotoxin injury and attenuated muscle degeneration and fibrosis in mdx mice. Conversely, a humanized mouse model expressing miR-33a and miR-33b showed exacerbated muscle degeneration and fibrosis. Mechanistically, miR-33a/b inhibited satellite cell proliferation, leading to reduced muscle regeneration and increased fibrosis by targeting Cdk6, Fst, and Abca1. Local and systemic administration of anti-miRNA oligonucleotides targeting miR-33a/b ameliorated the dystrophic phenotype in mdx mice. Furthermore, miR-33b inhibition upregulated these target genes in myotubes differentiated from human induced pluripotent stem cells derived from a patient with DMD. These findings indicate that miR-33a/b are involved in muscle regeneration and their inhibition may represent a potential therapeutic strategy for muscular dystrophy.","PeriodicalId":11597,"journal":{"name":"EMBO Molecular Medicine","volume":"15 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144684291","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}
Chiara Pozzi,Riccardo Sarti,Antonino Lo Cascio,Stefanos Bonovas,Luca Tiraboschi,Michela Lizier,Alice Bertocchi,Rosalba Torrisi,Bethania Fernandes,Piergiuseppe Colombo,Pietro Diana,Emilia Maria Cristina Mazza,Marina Valeri,Salvatore Lorenzo Renne,Ferdinando Carlo Maria Cananzi,Laura Samà,Alexia Bertuzzi,Corrado Tinterri,Massimo Lazzeri,Maria Rescigno
{"title":"PV-1: a novel molecular prognostic marker of distant metastases in various solid tumors.","authors":"Chiara Pozzi,Riccardo Sarti,Antonino Lo Cascio,Stefanos Bonovas,Luca Tiraboschi,Michela Lizier,Alice Bertocchi,Rosalba Torrisi,Bethania Fernandes,Piergiuseppe Colombo,Pietro Diana,Emilia Maria Cristina Mazza,Marina Valeri,Salvatore Lorenzo Renne,Ferdinando Carlo Maria Cananzi,Laura Samà,Alexia Bertuzzi,Corrado Tinterri,Massimo Lazzeri,Maria Rescigno","doi":"10.1038/s44321-025-00277-5","DOIUrl":"https://doi.org/10.1038/s44321-025-00277-5","url":null,"abstract":"Identification of biomarkers for the hematogenous spreading of cancer cells is of paramount prognostic and therapeutic value. We showed that Plasmalemma Vesicle Associated Protein-1 (PV-1) serves as a marker of increased blood vessel permeability and is an independent predictor of colorectal cancer dissemination. This study investigates whether PV-1 can also act as a prognostic marker for distant metastases in other solid tumors. We analyzed samples from 134 patients: 30 luminal breast cancer (BC), 52 clear cell renal cell carcinoma (ccRCC), and obtained preliminary data from 52 soft tissue sarcomas (STS). A higher frequency of PV-1+ endothelial cells was significantly associated with metastatic progression in luminal BC and ccRCC. Moreover, the frequency of PV-1+ cells emerged as a significant prognostic factor for metastasis-free survival in both luminal BC and ccRCC. Further research is needed to validate PV-1's prognostic utility, as including it at diagnosis may change the management of these patients and should allow stratification for more aggressive therapies or for closer follow-ups to promptly intervene in case of metastases development.","PeriodicalId":11597,"journal":{"name":"EMBO Molecular Medicine","volume":"6 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144678102","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}
Besnik Muqaku,Johannes Dorst,Maximilian Wiesenfarth,Markus Otto,Albert C Ludolph,Patrick Oeckl
{"title":"Peptidomic analysis of CSF reveals new biomarker candidates for amyotrophic lateral sclerosis.","authors":"Besnik Muqaku,Johannes Dorst,Maximilian Wiesenfarth,Markus Otto,Albert C Ludolph,Patrick Oeckl","doi":"10.1038/s44321-025-00272-w","DOIUrl":"https://doi.org/10.1038/s44321-025-00272-w","url":null,"abstract":"Amyotrophic lateral sclerosis (ALS) is a devastating neurodegenerative disease, and novel biomarkers are needed. We applied mass-spectrometry-based peptidomic analysis in cerebrospinal fluid (CSF) samples of ALS and non-neurodegenerative control patients (Con) from a discovery (n = 48) and validation (n = 109) cohort for biomarker discovery. Systematic selection revealed a panel of eight novel peptide biomarker candidates for ALS (out of 33,605) derived from seven proteins. In the validation cohort, NFL, MAP1B, MYL1, and APOC1 peptides were upregulated, and peptides from CADM3, SCG1, and PENK were downregulated in ALS compared to Con. The peptides (except NFL) were not changed in other neurodegenerative diseases, including Alzheimer´s disease, frontotemporal dementia and Parkinson´s disease. Combination of all peptides in a logistic regression model led to an area under the curve value of 98% for the discrimination of ALS from controls. Data of the NFL peptide strongly correlated with an established NFL immunoassay (Ella, r = 0.97). The peptide biomarker candidates are derived from proteins with different function, and their determination with our method provides the opportunity for simultaneous investigation of key processes in ALS.","PeriodicalId":11597,"journal":{"name":"EMBO Molecular Medicine","volume":"52 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144664267","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}
{"title":"LIMA1-alpha staining predicts curative intent surgery response in HPV negative head and neck cancer.","authors":"Xi Qiao,Johannes Routila,Mari Tienhaara,Heikki Irjala,Priyadharshini Parimelazhagan Santhi,Teemu Huusko,Linda Nissi,Ilkka Paatero,Noora Lehtinen,Juha Rantala,Toni Viljanen,Ilmo Leivo,Petri Koivunen,Anna Jouppila-Mättö,Rami Taulu,Leif Bäck,Tommy Wilkman,Eeva Haapio,Ilpo Kinnunen,Kari Kurppa,Jukka Westermarck,Sami Ventelä","doi":"10.1038/s44321-025-00266-8","DOIUrl":"https://doi.org/10.1038/s44321-025-00266-8","url":null,"abstract":"In many solid cancer types, surgery alone could be a sufficient first therapy option for a significant number of cancer patients. However, there are currently no diagnostic solutions to identify patients who could be stratified to surgery alone. To identify a biomarker predicting cancer surgery response, candidate biomarkers were studied in a non-metastatic head and neck squamous cell carcinoma (nmHNSCC) cohort well representative of the HPV-negative patient population. LIMA1 immunohistochemistry (IHC) with specificity-validated antibodies outperformed all other biomarkers in multivariable survival analyses of patients with nmHNSCC (n = 128, HR 2.10, P = 0.006). The prognostic effect was selective to LIMA1-alpha isoform IHC detection in patients who had received surgical therapy (n = 184, HR 2.39, P > 0.001). Strikingly, our real-world validation results, using two prospectively collected cohorts (n = 15 and n = 86), demonstrate that none of the LIMA1 negative patients died of HNSCC during the follow-up. Collectively, we report here the discovery of a diagnostic LIMA1-alpha IHC assay for HPV-negative HNSCC patient stratification to surgery-only therapy. Application of LIMA1 detection in routine nmHNSCC diagnostics would revolutionize the clinical management of HNSCC patients.","PeriodicalId":11597,"journal":{"name":"EMBO Molecular Medicine","volume":"18 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144652741","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}
{"title":"Cold exposure promotes the progression of osteoarthritis through downregulating APOE in cartilage.","authors":"Yueqi Zhang,Mei Fu,Chun Zhou,Xiao Wang,Zengxin Jiang,Chang Jiang,Shengyang Guo,Zhiying Pang,Chenzhong Wang,Tao Yu,Senbo An,Xiuhui Wang,Zhe Wang","doi":"10.1038/s44321-025-00268-6","DOIUrl":"https://doi.org/10.1038/s44321-025-00268-6","url":null,"abstract":"Osteoarthritis (OA) is a degenerative joint disease with limited effective therapies. Cold weathers have been shown to affect joint pain in OA patients. However, the impact of cold climate on OA progression is debated, with the underlying mechanisms not fully understood. This study aims to elucidate the role of Apolipoprotein E (Apoe) in chondrocytes in relation to OA progression under cold exposure. Both human chondrocytes RNA sequencing and DMM mice OA model revealed that lower temperatures significantly downregulated Apoe expression, correlating with OA exacerbation. Conditional knockout of Apoe in cartilage aggravated cartilage degeneration, leading to lipid accumulation, increased ROS production, mitochondrial dysfunction, and elevated chondrocyte apoptosis. Treatment with RGX-104, an LXRβ agonist, reversely restored APOE expression, mitigated aberrant lipid accumulation and countered the detrimental effects of cold exposure on OA progression. These results suggest that targeting lipid transfer and metabolism, especially through Apoe modulation, may offer therapeutic strategies for OA patients residing in colder climates, such as those at high altitudes and latitudes, and even winter season.","PeriodicalId":11597,"journal":{"name":"EMBO Molecular Medicine","volume":"12 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144640181","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}
{"title":"Effects of antioxidants on cancer progression.","authors":"Sarah Schmidt,Xi Qiao,Martin O Bergö","doi":"10.1038/s44321-025-00269-5","DOIUrl":"https://doi.org/10.1038/s44321-025-00269-5","url":null,"abstract":"Antioxidant supplements are widely marketed for their promised health benefits, including cancer prevention and therapy support. This belief stems from the idea that excessive levels of reactive oxygen species (ROS) cause oxidative damage to cellular macromolecules. However, the effects of antioxidants are highly context-dependent and influenced by the compound type, dosage, and cancer type. While antioxidants may slow tumor progression in specific cancers such as MYC-driven lymphoma, they can accelerate tumor growth, metastasis, and angiogenesis in other settings, including KRAS-driven lung cancer and BRAF-driven melanoma. Some antioxidants may also influence the immune system in ways that support cancer therapies, such as immune checkpoint blockade. Here, we review recent studies that highlight the complex roles of antioxidants in cancer progression and discuss their potential implications for clinical practice.","PeriodicalId":11597,"journal":{"name":"EMBO Molecular Medicine","volume":"12 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144612888","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}