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Gambelli A, Nespolo A, Rampioni Vinciguerra GL, Pivetta E, Pellarin I, Nicoloso MS, Scapin C, Stefanatti L, Segatto I, Favero A, D'Andrea S, Mucignat MT, Bartoletti M, Lucia E, Schiappacassi M, Spessotto P, Canzonieri V, Giorda G, Puglisi F, Vecchione A, Belletti B, Sonego M, Baldassarre G. Platinum-induced upregulation of ITGA6 promotes chemoresistance and spreading in ovarian cancer. EMBO Mol Med 2024:10.1038/s44321-024-00069-3. [PMID: 38658801 DOI: 10.1038/s44321-024-00069-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 03/27/2024] [Accepted: 04/04/2024] [Indexed: 04/26/2024] Open
Abstract
Platinum (PT)-resistant Epithelial Ovarian Cancer (EOC) grows as a metastatic disease, disseminating in the abdomen and pelvis. Very few options are available for PT-resistant EOC patients, and little is known about how the acquisition of PT-resistance mediates the increased spreading capabilities of EOC. Here, using isogenic PT-resistant cells, genetic and pharmacological approaches, and patient-derived models, we report that Integrin α6 (ITGA6) is overexpressed by PT-resistant cells and is necessary to sustain EOC metastatic ability and adhesion-dependent PT-resistance. Using in vitro approaches, we showed that PT induces a positive loop that, by stimulating ITGA6 transcription and secretion, contributes to the formation of a pre-metastatic niche enabling EOC cells to disseminate. At molecular level, ITGA6 engagement regulates the production and availability of insulin-like growth factors (IGFs), over-stimulating the IGF1R pathway and upregulating Snail expression. In vitro data were recapitulated using in vivo models in which the targeting of ITGA6 prevents PT-resistant EOC dissemination and improves PT-activity, supporting ITGA6 as a promising druggable target for EOC patients.
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Affiliation(s)
- Alice Gambelli
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Anna Nespolo
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Gian Luca Rampioni Vinciguerra
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, Sant'Andrea Hospital, University of Rome "Sapienza", Rome, Italy
| | - Eliana Pivetta
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Ilenia Pellarin
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Milena S Nicoloso
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Chiara Scapin
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Linda Stefanatti
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Ilenia Segatto
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Andrea Favero
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Sara D'Andrea
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Maria Teresa Mucignat
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Michele Bartoletti
- Deparment of Medical Oncology, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Emilio Lucia
- Gynecological Surgery Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Monica Schiappacassi
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Paola Spessotto
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Vincenzo Canzonieri
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, TS, Italy
| | - Giorgio Giorda
- Gynecological Surgery Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Fabio Puglisi
- Deparment of Medical Oncology, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
- Department of Medicine, University of Udine, Udine, UD, Italy
| | - Andrea Vecchione
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, Sant'Andrea Hospital, University of Rome "Sapienza", Rome, Italy
| | - Barbara Belletti
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Maura Sonego
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy
| | - Gustavo Baldassarre
- Molecular Oncology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, National Cancer Institute, Aviano, PN, Italy.
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Costanza M, Ciotti A, Consonni A, Cipelletti B, Cattalini A, Cagnoli C, Baggi F, de Curtis M, Colciaghi F. CNS autoimmune response in the MAM/pilocarpine rat model of epileptogenic cortical malformation. Proc Natl Acad Sci U S A 2024; 121:e2319607121. [PMID: 38635635 PMCID: PMC11047071 DOI: 10.1073/pnas.2319607121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 03/14/2024] [Indexed: 04/20/2024] Open
Abstract
The development of seizures in epilepsy syndromes associated with malformations of cortical development (MCDs) has traditionally been attributed to intrinsic cortical alterations resulting from abnormal network excitability. However, recent analyses at single-cell resolution of human brain samples from MCD patients have indicated the possible involvement of adaptive immunity in the pathogenesis of these disorders. By exploiting the MethylAzoxyMethanol (MAM)/pilocarpine (MP) rat model of drug-resistant epilepsy associated with MCD, we show here that the occurrence of status epilepticus and subsequent spontaneous recurrent seizures in the malformed, but not in the normal brain, are associated with the outbreak of a destructive autoimmune response with encephalitis-like features, involving components of both cell-mediated and humoral immune responses. The MP brain is characterized by blood-brain barrier dysfunction, marked and persisting CD8+ T cell invasion of the brain parenchyma, meningeal B cell accumulation, and complement-dependent cytotoxicity mediated by antineuronal antibodies. Furthermore, the therapeutic treatment of MP rats with the immunomodulatory drug fingolimod promotes both antiepileptogenic and neuroprotective effects. Collectively, these data show that the MP rat could serve as a translational model of epileptogenic cortical malformations associated with a central nervous system autoimmune response. This work indicates that a preexisting brain maldevelopment predisposes to a secondary autoimmune response, which acts as a precipitating factor for epilepsy and suggests immune intervention as a therapeutic option to be further explored in epileptic syndromes associated with MCDs.
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Affiliation(s)
- Massimo Costanza
- Neuro-Oncology Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Neurologico Carlo Besta, Milan20133, Italy
| | - Arianna Ciotti
- Epilepsy Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Neurologico Carlo Besta, Milan20133, Italy
| | - Alessandra Consonni
- Neuroimmunology Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Neurologico Carlo Besta, Milan20133, Italy
| | - Barbara Cipelletti
- Epilepsy Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Neurologico Carlo Besta, Milan20133, Italy
| | - Alessandro Cattalini
- Epilepsy Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Neurologico Carlo Besta, Milan20133, Italy
| | - Cinzia Cagnoli
- Epilepsy Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Neurologico Carlo Besta, Milan20133, Italy
| | - Fulvio Baggi
- Neuroimmunology Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Neurologico Carlo Besta, Milan20133, Italy
| | - Marco de Curtis
- Epilepsy Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Neurologico Carlo Besta, Milan20133, Italy
| | - Francesca Colciaghi
- Epilepsy Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Neurologico Carlo Besta, Milan20133, Italy
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Mancabelli L, Milani C, De Biase R, Bocchio F, Fontana F, Lugli GA, Alessandri G, Tarracchini C, Viappiani A, De Conto F, Nouvenne A, Ticinesi A, Bussolati O, Meschi T, Cecchi R, Turroni F, Ventura M. Taxonomic and metabolic development of the human gut microbiome across life stages: a worldwide metagenomic investigation. mSystems 2024; 9:e0129423. [PMID: 38441032 PMCID: PMC11019788 DOI: 10.1128/msystems.01294-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 02/09/2024] [Indexed: 03/06/2024] Open
Abstract
The human gut microbiota is a dynamic community of microorganisms that undergo variable changes over the entire life span. To thoroughly investigate the possible fluctuations of the microbiota throughout human life, we performed a pooled analysis of healthy fecal samples across different age groups covering the entire human life span. Our study integrated data from 79 publicly available studies and new stool samples from an Italian cohort, i.e., the Parma Microbiota project, resulting in 6,653 samples processed through the shotgun metagenomic approach. This approach has allowed species-level taxonomic reconstruction of the gut microbiota and investigation of its metabolic potential across the human life span. From a taxonomic point of view, our findings confirmed and detailed at species-level accuracy that the microbial richness of the gut microbiota gradually increases in the first stage of life, becoming relatively stable during adolescence. Moreover, the analysis identified the potential core microbiota representative of distinct age groups, revealing age-related bacterial patterns and the continuous rearrangement of the microbiota in terms of relative abundances across the life span rather than the acquisition and loss of taxa. Furthermore, the shotgun approach provided insights into the functional contribution of the human gut microbiome. The metagenomic analysis revealed functional age-related differences, particularly in carbohydrate and fiber metabolism, suggesting a co-evolution of the microbiome assembly with diet. Additionally, we identified correlations between vitamin synthesis, such as thiamine and niacin, and early life, suggesting a potential role of the microbiome in human physiology, in particular in the functions of the host's nervous and immune systems. IMPORTANCE In this study, we provided comprehensive insights into the dynamic nature of the human gut microbiota across the human life span. In detail, we analyzed a large data set based on a shotgun metagenomic approach, combining public data sets and new samples from the Parma Microbiota project and obtaining a detailed overview of the possible relationship between gut microbiota development and aging. Our findings confirmed the main stages in microbial richness development and revealed specific core microbiota associated with different age stages. Moreover, the shotgun metagenomic approach allowed the disentangling of the functional changes in the microbiome across the human life span, particularly in diet-related metabolism, which is probably correlated to bacterial co-evolution with dietary habits. Notably, our study also uncovered positive correlations with vitamin synthesis in early life, suggesting a possible impact of the microbiota on human physiology.
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Affiliation(s)
- Leonardo Mancabelli
- Department of Medicine and Surgery, University of Parma, Parma, Italy
- Interdepartmental Research Centre "Microbiome Research Hub", University of Parma, Parma, Italy
| | - Christian Milani
- Interdepartmental Research Centre "Microbiome Research Hub", University of Parma, Parma, Italy
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Rosita De Biase
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Fabiana Bocchio
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Federico Fontana
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Gabriele Andrea Lugli
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Giulia Alessandri
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Chiara Tarracchini
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | | | - Flora De Conto
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Antonio Nouvenne
- Department of Medicine and Surgery, University of Parma, Parma, Italy
- Interdepartmental Research Centre "Microbiome Research Hub", University of Parma, Parma, Italy
- Parma University Hospital, Parma, Italy
| | - Andrea Ticinesi
- Department of Medicine and Surgery, University of Parma, Parma, Italy
- Interdepartmental Research Centre "Microbiome Research Hub", University of Parma, Parma, Italy
- Parma University Hospital, Parma, Italy
| | - Ovidio Bussolati
- Department of Medicine and Surgery, University of Parma, Parma, Italy
- Interdepartmental Research Centre "Microbiome Research Hub", University of Parma, Parma, Italy
| | - Tiziana Meschi
- Department of Medicine and Surgery, University of Parma, Parma, Italy
- Interdepartmental Research Centre "Microbiome Research Hub", University of Parma, Parma, Italy
- Parma University Hospital, Parma, Italy
| | - Rossana Cecchi
- Department of Medicine and Surgery, University of Parma, Parma, Italy
- Interdepartmental Research Centre "Microbiome Research Hub", University of Parma, Parma, Italy
| | - Francesca Turroni
- Interdepartmental Research Centre "Microbiome Research Hub", University of Parma, Parma, Italy
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Marco Ventura
- Interdepartmental Research Centre "Microbiome Research Hub", University of Parma, Parma, Italy
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
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Swatler J, De Luca M, Rotella I, Lise V, Mazza EMC, Lugli E. CD4+ Regulatory T Cells in Human Cancer: Subsets, Origin, and Molecular Regulation. Cancer Immunol Res 2024; 12:393-399. [PMID: 38562083 DOI: 10.1158/2326-6066.cir-23-0517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/18/2023] [Accepted: 12/20/2023] [Indexed: 04/04/2024]
Abstract
CD4+CD25hiFOXP3+ regulatory T cells (Treg) play major roles in the maintenance of immune tolerance, prevention of inflammation, and tissue homeostasis and repair. In contrast with these beneficial roles, Tregs are abundant in virtually all tumors and have been mechanistically linked to disease progression, metastases development, and therapy resistance. Tregs are thus recognized as a major target for cancer immunotherapy. Compared with other sites in the body, tumors harbor hyperactivated Treg subsets whose molecular characteristics are only beginning to be elucidated. Here, we describe current knowledge of intratumoral Tregs and discuss their potential cellular and tissue origin. Furthermore, we describe currently recognized molecular regulators that drive differentiation and maintenance of Tregs in cancer, with a special focus on those signals regulating their chronic immune activation, with relevant implications for cancer progression and therapy.
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Affiliation(s)
- Julian Swatler
- Laboratory of Translational Immunology, IRCCS Humanitas Research Hospital, Rozzano, Milan
| | - Marco De Luca
- Laboratory of Translational Immunology, IRCCS Humanitas Research Hospital, Rozzano, Milan
| | - Ivano Rotella
- Laboratory of Translational Immunology, IRCCS Humanitas Research Hospital, Rozzano, Milan
| | - Veronica Lise
- Laboratory of Translational Immunology, IRCCS Humanitas Research Hospital, Rozzano, Milan
| | | | - Enrico Lugli
- Laboratory of Translational Immunology, IRCCS Humanitas Research Hospital, Rozzano, Milan
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5
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Carnevale S, Ponzetta A, Rigatelli A, Carriero R, Puccio S, Supino D, Grieco G, Molisso P, Di Ceglie I, Scavello F, Perucchini C, Pasqualini F, Recordati C, Tripodo C, Belmonte B, Mariancini A, Kunderfranco P, Sciumè G, Lugli E, Bonavita E, Magrini E, Garlanda C, Mantovani A, Jaillon S. Neutrophils Mediate Protection Against Colitis and Carcinogenesis by Controlling Bacterial Invasion and IL22 Production by γδ T Cells. Cancer Immunol Res 2024; 12:413-426. [PMID: 38349973 PMCID: PMC10985471 DOI: 10.1158/2326-6066.cir-23-0295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 12/01/2023] [Accepted: 02/09/2024] [Indexed: 02/15/2024]
Abstract
Neutrophils are the most abundant leukocytes in human blood and play a primary role in resistance against invading microorganisms and in the acute inflammatory response. However, their role in colitis and colitis-associated colorectal cancer is still under debate. This study aims to dissect the role of neutrophils in these pathologic contexts by using a rigorous genetic approach. Neutrophil-deficient mice (Csf3r-/- mice) were used in classic models of colitis and colitis-associated colorectal cancer and the role of neutrophils was assessed by histologic, cellular, and molecular analyses coupled with adoptive cell transfer. We also performed correlative analyses using human datasets. Csf3r-/- mice showed increased susceptibility to colitis and colitis-associated colorectal cancer compared with control Csf3r+/+ mice and adoptive transfer of neutrophils in Csf3r-/- mice reverted the phenotype. In colitis, Csf3r-/- mice showed increased bacterial invasion and a reduced number of healing ulcers in the colon, indicating a compromised regenerative capacity of epithelial cells. Neutrophils were essential for γδ T-cell polarization and IL22 production. In patients with ulcerative colitis, expression of CSF3R was positively correlated with IL22 and IL23 expression. Moreover, gene signatures associated with epithelial-cell development, proliferation, and antimicrobial response were enriched in CSF3Rhigh patients. Our data support a model where neutrophils mediate protection against intestinal inflammation and colitis-associated colorectal cancer by controlling the intestinal microbiota and driving the activation of an IL22-dependent tissue repair pathway.
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Affiliation(s)
| | | | - Anna Rigatelli
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | | | - Simone Puccio
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Institute of Genetic and Biomedical Research, UoS Milan, National Research Council, Milan, Italy
| | | | - Giovanna Grieco
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Piera Molisso
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Milan, Italy
| | | | | | | | - Fabio Pasqualini
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Camilla Recordati
- Department of Veterinary Medicine and Animal Sciences, University of Milan, Mouse & Animal Pathology Laboratory (MAPLab), UniMi Foundation, Milan, Italy
| | - Claudio Tripodo
- Tumor Immunology Unit, Department of Health Science, University of Palermo, School of Medicine, Palermo, Italy
| | - Beatrice Belmonte
- Tumor Immunology Unit, Department of Health Science, University of Palermo, School of Medicine, Palermo, Italy
| | - Andrea Mariancini
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Milan, Italy
| | | | - Giuseppe Sciumè
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Rome, Italy
| | - Enrico Lugli
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Eduardo Bonavita
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Elena Magrini
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Cecilia Garlanda
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Alberto Mantovani
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Milan, Italy
- The William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Sebastien Jaillon
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Milan, Italy
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De Pascale G, Posteraro B, De Maio F, Pafundi PC, Tanzarella ES, Cutuli SL, Lombardi G, Grieco DL, Franchini E, Santarelli G, Infante A, Sanguinetti M, Antonelli M. Lung microbiota composition, respiratory mechanics, and outcomes in COVID-19-related ARDS. Microbiol Spectr 2024; 12:e0357423. [PMID: 38466118 DOI: 10.1128/spectrum.03574-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 01/29/2024] [Indexed: 03/12/2024] Open
Abstract
Few data are available on the lung microbiota composition of patients with coronavirus disease 2019-related acute respiratory distress syndrome (C-ARDS) receiving invasive mechanical ventilation (IMV). Moreover, it has never been investigated whether there is a potential correlation between lung microbiota communities and respiratory mechanics. We performed a prospective observational study in two intensive care units of a university hospital in Italy. Lung microbiota was investigated by bacterial 16S rRNA gene sequencing, performed on bronchoalveolar lavage fluid samples withdrawn after intubation. The lung bacterial communities were analyzed after stratification by respiratory system compliance/predicted body weight (Crs) and ventilatory ratio (VR). Weaning from IMV and hospital survival were assessed as secondary outcomes. In 70 C-ARDS patients requiring IMV from 1 April through 31 December 2020, the lung microbiota composition (phylum taxonomic level, permutational multivariate analysis of variance test) significantly differed between who had low Crs vs those with high Crs (P = 0.010), as well as in patients with low VR vs high VR (P = 0.012). As difference-driving taxa, Proteobacteria (P = 0.017) were more dominant and Firmicutes (P = 0.040) were less dominant in low- vs high-Crs patients. Similarly, Proteobacteria were more dominant in low- vs high-VR patients (P = 0.013). After multivariable regression analysis, we further observed lung microbiota diversity as a negative predictor of weaning from IMV and hospital survival (hazard ratio = 3.31; 95% confidence interval, 1.52-7.20, P = 0.048). C-ARDS patients with low Crs/low VR had a Proteobacteria-dominated lung microbiota. Whether patients with a more diverse lung bacterial community may have more chances to be weaned from IMV and discharged alive from the hospital warrants further large-scale investigations. IMPORTANCE Lung microbiota characteristics were demonstrated to predict ventilator-free days and weaning from mechanical ventilation in patients with acute respiratory distress syndrome (ARDS). In this study, we observed that in severe coronavirus disease 2019 patients with ARDS who require invasive mechanical ventilation, lung microbiota characteristics were associated with respiratory mechanics. Specifically, the lung microbiota of patients with low respiratory system compliance and low ventilatory ratio was characterized by Proteobacteria dominance. Moreover, after multivariable regression analysis, we also found an association between patients' microbiota diversity and a higher possibility of being weaned from mechanical ventilation and discharged alive from the hospital. For these reasons, lung microbiota characterization may help to stratify patient characteristics and orient the delivery of target interventions. (This study has been registered at ClinicalTrials.gov on 17 February 2020 under identifier NCT04271345.). Registered at ClinicalTrials.gov, 17 February 2020 (NCT0427135).
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Affiliation(s)
- Gennaro De Pascale
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Rome, Italy
- Dipartimento di Scienze dell'Emergenza, Anestesiologiche e della Rianimazione, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Brunella Posteraro
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Rome, Italy
- Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Flavio De Maio
- Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Pia Clara Pafundi
- Epidemiology and Biostatistics Research Core Facility, Gemelli Science & Technology Park, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Eloisa Sofia Tanzarella
- Dipartimento di Scienze dell'Emergenza, Anestesiologiche e della Rianimazione, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Salvatore Lucio Cutuli
- Dipartimento di Scienze dell'Emergenza, Anestesiologiche e della Rianimazione, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Gianmarco Lombardi
- Dipartimento di Scienze dell'Emergenza, Anestesiologiche e della Rianimazione, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Domenico Luca Grieco
- Dipartimento di Scienze dell'Emergenza, Anestesiologiche e della Rianimazione, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Emanuele Franchini
- Dipartimento di Scienze dell'Emergenza, Anestesiologiche e della Rianimazione, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Giulia Santarelli
- Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Amato Infante
- Dipartimento di Scienze Radiologiche ed Ematologiche, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Maurizio Sanguinetti
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Rome, Italy
- Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Massimo Antonelli
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Rome, Italy
- Dipartimento di Scienze dell'Emergenza, Anestesiologiche e della Rianimazione, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
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Rigamonti A, Viatore M, Polidori R, Rahal D, Erreni M, Fumagalli MR, Zanini D, Doni A, Putignano AR, Bossi P, Voulaz E, Alloisio M, Rossi S, Zucali PA, Santoro A, Balzano V, Nisticò P, Feuerhake F, Mantovani A, Locati M, Marchesi F. Integrating AI-Powered Digital Pathology and Imaging Mass Cytometry Identifies Key Classifiers of Tumor Cells, Stroma, and Immune Cells in Non-Small Cell Lung Cancer. Cancer Res 2024; 84:1165-1177. [PMID: 38315789 PMCID: PMC10982643 DOI: 10.1158/0008-5472.can-23-1698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 11/13/2023] [Accepted: 02/01/2024] [Indexed: 02/07/2024]
Abstract
Artificial intelligence (AI)-powered approaches are becoming increasingly used as histopathologic tools to extract subvisual features and improve diagnostic workflows. On the other hand, hi-plex approaches are widely adopted to analyze the immune ecosystem in tumor specimens. Here, we aimed at combining AI-aided histopathology and imaging mass cytometry (IMC) to analyze the ecosystem of non-small cell lung cancer (NSCLC). An AI-based approach was used on hematoxylin and eosin (H&E) sections from 158 NSCLC specimens to accurately identify tumor cells, both adenocarcinoma and squamous carcinoma cells, and to generate a classifier of tumor cell spatial clustering. Consecutive tissue sections were stained with metal-labeled antibodies and processed through the IMC workflow, allowing quantitative detection of 24 markers related to tumor cells, tissue architecture, CD45+ myeloid and lymphoid cells, and immune activation. IMC identified 11 macrophage clusters that mainly localized in the stroma, except for S100A8+ cells, which infiltrated tumor nests. T cells were preferentially localized in peritumor areas or in tumor nests, the latter being associated with better prognosis, and they were more abundant in highly clustered tumors. Integrated tumor and immune classifiers were validated as prognostic on whole slides. In conclusion, integration of AI-powered H&E and multiparametric IMC allows investigation of spatial patterns and reveals tissue relevant features with clinical relevance. SIGNIFICANCE Leveraging artificial intelligence-powered H&E analysis integrated with hi-plex imaging mass cytometry provides insights into the tumor ecosystem and can translate tumor features into classifiers to predict prognosis, genotype, and therapy response.
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Affiliation(s)
- Alessandra Rigamonti
- Department of Immunology and Inflammation, IRCCS Humanitas Research Hospital; Rozzano (Milan), Italy
- Department of Medical Biotechnology and Translational Medicine, University of Milan; Milan, Italy
| | - Marika Viatore
- Department of Immunology and Inflammation, IRCCS Humanitas Research Hospital; Rozzano (Milan), Italy
- Department of Medical Biotechnology and Translational Medicine, University of Milan; Milan, Italy
| | - Rebecca Polidori
- Department of Immunology and Inflammation, IRCCS Humanitas Research Hospital; Rozzano (Milan), Italy
- Department of Medical Biotechnology and Translational Medicine, University of Milan; Milan, Italy
| | - Daoud Rahal
- Department of Pathology, IRCCS Humanitas Research Hospital; Rozzano (Milan), Italy
| | - Marco Erreni
- Unit of Advanced Optical Microscopy, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Maria Rita Fumagalli
- Unit of Advanced Optical Microscopy, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Damiano Zanini
- Unit of Advanced Optical Microscopy, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Andrea Doni
- Unit of Advanced Optical Microscopy, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Anna Rita Putignano
- Department of Immunology and Inflammation, IRCCS Humanitas Research Hospital; Rozzano (Milan), Italy
| | - Paola Bossi
- Department of Pathology, IRCCS Humanitas Research Hospital; Rozzano (Milan), Italy
| | - Emanuele Voulaz
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Milan, Italy
- Division of Thoracic Surgery, IRCCS Humanitas Research Hospital, Rozzano (Milan), Italy
| | - Marco Alloisio
- Division of Thoracic Surgery, IRCCS Humanitas Research Hospital, Rozzano (Milan), Italy
| | - Sabrina Rossi
- Medical Oncology and Hematology Unit, IRCCS Humanitas Research Hospital, Rozzano (Milan), Italy
| | - Paolo Andrea Zucali
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Milan, Italy
- Medical Oncology and Hematology Unit, IRCCS Humanitas Research Hospital, Rozzano (Milan), Italy
| | - Armando Santoro
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Milan, Italy
- Medical Oncology and Hematology Unit, IRCCS Humanitas Research Hospital, Rozzano (Milan), Italy
| | - Vittoria Balzano
- Immunology and Immunotherapy Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Paola Nisticò
- Immunology and Immunotherapy Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | | | - Alberto Mantovani
- Department of Immunology and Inflammation, IRCCS Humanitas Research Hospital; Rozzano (Milan), Italy
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Milan, Italy
- The William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Massimo Locati
- Department of Immunology and Inflammation, IRCCS Humanitas Research Hospital; Rozzano (Milan), Italy
- Department of Medical Biotechnology and Translational Medicine, University of Milan; Milan, Italy
| | - Federica Marchesi
- Department of Immunology and Inflammation, IRCCS Humanitas Research Hospital; Rozzano (Milan), Italy
- Department of Medical Biotechnology and Translational Medicine, University of Milan; Milan, Italy
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8
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Romani L, Del Chierico F, Pane S, Ristori MV, Pirona I, Guarrasi V, Cotugno N, Bernardi S, Lancella L, Perno CF, Rossi P, Villani A, Campana A, Palma P, Putignani L. Exploring nasopharyngeal microbiota profile in children affected by SARS-CoV-2 infection. Microbiol Spectr 2024; 12:e0300923. [PMID: 38289047 PMCID: PMC10913489 DOI: 10.1128/spectrum.03009-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 12/12/2023] [Indexed: 03/06/2024] Open
Abstract
The relationship between COVID-19 and nasopharyngeal (NP) microbiota has been investigated mainly in the adult population. We explored the NP profile of children affected by COVID-19, compared to healthy controls (CTRLs). NP swabs of children with COVID-19, collected between March and September 2020, were investigated at the admission (T0), 72 h to 7 days (T1), and at the discharge (T2) of the patients. NP microbiota was analyzed by 16S rRNA targeted-metagenomics. Data from sequencing were investigated by QIIME 2.0 and PICRUSt 2. Multiple machine learning (ML) models were exploited to classify patients compared to CTRLs. The NP microbiota of COVID-19 patients (N = 71) was characterized by reduction of α-diversity compared to CTRLs (N = 59). The NP microbiota of COVID-19 cohort appeared significantly enriched in Streptococcus, Haemophilus, Staphylococcus, Veillonella, Enterococcus, Neisseria, Moraxella, Enterobacteriaceae, Gemella, Bacillus, and reduced in Faecalibacterium, Akkermansia, Blautia, Bifidobacterium, Ruminococcus, and Bacteroides, compared to CTRLs (FDR < 0.001). Exploiting ML models, Enterococcus, Pseudomonas, Streptococcus, Capnocytopagha, Tepidiphilus, Porphyromonas, Staphylococcus, and Veillonella resulted as NP microbiota biomarkers, in COVID-19 patients. No statistically significant differences were found comparing the NP microbiota profile of COVID-19 patients during the time-points or grouping patients on the basis of high, medium, and low viral load (VL). This evidence provides specific pathobiont signatures of the NP microbiota in pediatric COVID-19 patients, and the reduction of anaerobic protective commensals. Our data suggest that the NP microbiota may have a specific disease-related signature since infection onset without changes during disease progression, regardless of the SARS-CoV-2 VL. IMPORTANCE Since the beginning of pandemic, we know that children are less susceptible to severe COVID-19 disease. A potential role of the nasopharyngeal (NP) microbiota has been hypothesized but to date, most of the studies have been focused on adults. We studied the NP microbiota modifications in children affected by SARS-CoV-2 infection showing a specific NP microbiome profile, mainly composed by pathobionts and almost missing protective anaerobic commensals. Moreover, in our study, specific microbial signatures appear since the first days of infection independently from SARS-CoV-2 viral load.
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Affiliation(s)
- L. Romani
- Infectious Disease Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - F. Del Chierico
- Research Unit of Human Microbiome, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - S. Pane
- Unit of Microbiomics, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - M. V. Ristori
- Research Unit of Human Microbiome, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - I. Pirona
- GenomeUp SRL, Viale Pasteur, Rome, Italy
| | | | - N. Cotugno
- Research Unit of Congenital and Perinatal Infections, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
- Department of Systems Medicine, University of Rome ‘‘Tor Vergata’’, Rome, Italy
| | - S. Bernardi
- Infectious Disease Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - L. Lancella
- Infectious Disease Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - C. F. Perno
- Unit of Microbiology and Diagnostic Immunology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - P. Rossi
- Department of Systems Medicine, University of Rome ‘‘Tor Vergata’’, Rome, Italy
- Academic Department of Pediatrics, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - A. Villani
- Pediatric Emergency Department and General Pediatrics, Bambino Gesù Children's Hospital Bambino Gesù, IRCCS, Rome, Italy
| | - A. Campana
- Department of Pediatrics, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - P. Palma
- Research Unit of Congenital and Perinatal Infections, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
- Department of Systems Medicine, University of Rome ‘‘Tor Vergata’’, Rome, Italy
| | - L. Putignani
- Unit of Microbiomics and Research Unit of Human Microbiome, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - the CACTUS Study TeamCarducciFrancesca CalòCancriniCaterinaChiurchiùSaradegli AttiMarta CiofiCursiLauraCutreraRenatoD’AmoreCarmenD’ArgenioPatriziaDe IorisMaria A.De LucaMaiaFinocchiAndreaMannoEmma ConcettaMorrocchiElenaPansaPaolaSessaLiberaZangariPaola
- Infectious Disease Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
- Research Unit of Human Microbiome, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
- Unit of Microbiomics, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
- GenomeUp SRL, Viale Pasteur, Rome, Italy
- Research Unit of Congenital and Perinatal Infections, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
- Department of Systems Medicine, University of Rome ‘‘Tor Vergata’’, Rome, Italy
- Unit of Microbiology and Diagnostic Immunology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
- Academic Department of Pediatrics, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
- Pediatric Emergency Department and General Pediatrics, Bambino Gesù Children's Hospital Bambino Gesù, IRCCS, Rome, Italy
- Department of Pediatrics, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
- Unit of Microbiomics and Research Unit of Human Microbiome, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
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9
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Corsini A, Tomassini A, Pastore A, Delis I, Fadiga L, D'Ausilio A. Speech perception difficulty modulates theta-band encoding of articulatory synergies. J Neurophysiol 2024; 131:480-491. [PMID: 38323331 DOI: 10.1152/jn.00388.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/04/2024] [Accepted: 01/25/2024] [Indexed: 02/08/2024] Open
Abstract
The human brain tracks available speech acoustics and extrapolates missing information such as the speaker's articulatory patterns. However, the extent to which articulatory reconstruction supports speech perception remains unclear. This study explores the relationship between articulatory reconstruction and task difficulty. Participants listened to sentences and performed a speech-rhyming task. Real kinematic data of the speaker's vocal tract were recorded via electromagnetic articulography (EMA) and aligned to corresponding acoustic outputs. We extracted articulatory synergies from the EMA data with principal component analysis (PCA) and employed partial information decomposition (PID) to separate the electroencephalographic (EEG) encoding of acoustic and articulatory features into unique, redundant, and synergistic atoms of information. We median-split sentences into easy (ES) and hard (HS) based on participants' performance and found that greater task difficulty involved greater encoding of unique articulatory information in the theta band. We conclude that fine-grained articulatory reconstruction plays a complementary role in the encoding of speech acoustics, lending further support to the claim that motor processes support speech perception.NEW & NOTEWORTHY Top-down processes originating from the motor system contribute to speech perception through the reconstruction of the speaker's articulatory movement. This study investigates the role of such articulatory simulation under variable task difficulty. We show that more challenging listening tasks lead to increased encoding of articulatory kinematics in the theta band and suggest that, in such situations, fine-grained articulatory reconstruction complements acoustic encoding.
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Affiliation(s)
- Alessandro Corsini
- Center for Translational Neurophysiology of Speech and Communication, Istituto Italiano di Tecnologia, Ferrara, Italy
- Department of Neuroscience and Rehabilitation, Università di Ferrara, Ferrara, Italy
| | - Alice Tomassini
- Center for Translational Neurophysiology of Speech and Communication, Istituto Italiano di Tecnologia, Ferrara, Italy
- Department of Neuroscience and Rehabilitation, Università di Ferrara, Ferrara, Italy
| | - Aldo Pastore
- Laboratorio NEST, Scuola Normale Superiore, Pisa, Italy
| | - Ioannis Delis
- School of Biomedical Sciences, University of Leeds, Leeds, United Kingdom
| | - Luciano Fadiga
- Center for Translational Neurophysiology of Speech and Communication, Istituto Italiano di Tecnologia, Ferrara, Italy
- Department of Neuroscience and Rehabilitation, Università di Ferrara, Ferrara, Italy
| | - Alessandro D'Ausilio
- Center for Translational Neurophysiology of Speech and Communication, Istituto Italiano di Tecnologia, Ferrara, Italy
- Department of Neuroscience and Rehabilitation, Università di Ferrara, Ferrara, Italy
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10
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D'Andrea L, Audano M, Pedretti S, Pelucchi S, Stringhi R, Imperato G, De Cesare G, Cambria C, Laporte MH, Zamboni N, Antonucci F, Di Luca M, Mitro N, Marcello E. Glucose-derived glutamate drives neuronal terminal differentiation in vitro. EMBO Rep 2024; 25:991-1021. [PMID: 38243137 PMCID: PMC10933318 DOI: 10.1038/s44319-023-00048-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 12/01/2023] [Accepted: 12/19/2023] [Indexed: 01/21/2024] Open
Abstract
Neuronal maturation is the phase during which neurons acquire their final characteristics in terms of morphology, electrical activity, and metabolism. However, little is known about the metabolic pathways governing neuronal maturation. Here, we investigate the contribution of the main metabolic pathways, namely glucose, glutamine, and fatty acid oxidation, during the maturation of primary rat hippocampal neurons. Blunting glucose oxidation through the genetic and chemical inhibition of the mitochondrial pyruvate transporter reveals that this protein is critical for the production of glutamate, which is required for neuronal arborization, proper dendritic elongation, and spine formation. Glutamate supplementation in the early phase of differentiation restores morphological defects and synaptic function in mitochondrial pyruvate transporter-inhibited cells. Furthermore, the selective activation of metabotropic glutamate receptors restores the impairment of neuronal differentiation due to the reduced generation of glucose-derived glutamate and rescues synaptic local translation. Fatty acid oxidation does not impact neuronal maturation. Whereas glutamine metabolism is important for mitochondria, it is not for endogenous glutamate production. Our results provide insights into the role of glucose-derived glutamate as a key player in neuronal terminal differentiation.
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Affiliation(s)
- Laura D'Andrea
- Department of Pharmacological and Biomolecular Sciences "Rodolfo Paoletti", Via Giuseppe Balzaretti 9, 20133, Milan, Italy
| | - Matteo Audano
- Department of Pharmacological and Biomolecular Sciences "Rodolfo Paoletti", Via Giuseppe Balzaretti 9, 20133, Milan, Italy
| | - Silvia Pedretti
- Department of Pharmacological and Biomolecular Sciences "Rodolfo Paoletti", Via Giuseppe Balzaretti 9, 20133, Milan, Italy
| | - Silvia Pelucchi
- Department of Pharmacological and Biomolecular Sciences "Rodolfo Paoletti", Via Giuseppe Balzaretti 9, 20133, Milan, Italy
| | - Ramona Stringhi
- Department of Pharmacological and Biomolecular Sciences "Rodolfo Paoletti", Via Giuseppe Balzaretti 9, 20133, Milan, Italy
| | - Gabriele Imperato
- Department of Pharmacological and Biomolecular Sciences "Rodolfo Paoletti", Via Giuseppe Balzaretti 9, 20133, Milan, Italy
| | - Giulia De Cesare
- Department of Pharmacological and Biomolecular Sciences "Rodolfo Paoletti", Via Giuseppe Balzaretti 9, 20133, Milan, Italy
| | - Clara Cambria
- Department of Medical Biotechnology and Translational Medicine (BIOMETRA), Via F.lli Cervi 93, Segrate, 20054 Milan and via Vanvitelli 32, Milan, Italy
| | - Marine H Laporte
- Department of Molecular and Cellular Biology, University of Geneva, Geneva, Switzerland
| | - Nicola Zamboni
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - Flavia Antonucci
- Department of Medical Biotechnology and Translational Medicine (BIOMETRA), Via F.lli Cervi 93, Segrate, 20054 Milan and via Vanvitelli 32, Milan, Italy
- Institute of Neuroscience, IN-CNR, Milan, Italy
| | - Monica Di Luca
- Department of Pharmacological and Biomolecular Sciences "Rodolfo Paoletti", Via Giuseppe Balzaretti 9, 20133, Milan, Italy
| | - Nico Mitro
- Department of Pharmacological and Biomolecular Sciences "Rodolfo Paoletti", Via Giuseppe Balzaretti 9, 20133, Milan, Italy.
- Department of Experimental Oncology, IEO, European Institute of Oncology IRCCS, Milan, Italy.
| | - Elena Marcello
- Department of Pharmacological and Biomolecular Sciences "Rodolfo Paoletti", Via Giuseppe Balzaretti 9, 20133, Milan, Italy.
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11
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Berrino F, Villarini A, Gargano G, Krogh V, Grioni S, Bellegotti M, Venturelli E, Raimondi M, Traina A, Zarcone M, Amodio R, Mano MP, Johansson H, Panico S, Santucci de Magistris M, Barbero M, Gavazza C, Mercandino A, Consolaro E, Galasso R, Del Riccio L, Bassi MC, Simeoni M, Premoli P, Pasanisi P, Bonanni B, Bruno E. The Effect of Diet on Breast Cancer Recurrence: The DIANA-5 Randomized Trial. Clin Cancer Res 2024; 30:965-974. [PMID: 37847493 PMCID: PMC10905522 DOI: 10.1158/1078-0432.ccr-23-1615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/02/2023] [Accepted: 10/13/2023] [Indexed: 10/18/2023]
Abstract
PURPOSE The DIANA-5 randomized controlled trial assessed the effectiveness of a diet based on Mediterranean and macrobiotic traditions (macro-Mediterranean diet) in reducing breast cancer recurrence. PATIENTS AND METHODS The DIANA-5 study involved 1,542 patients with breast cancer at high risk of recurrence because of estrogen receptor-negative cancer, or metabolic syndrome, or high plasma levels of insulin or testosterone. Women were randomly assigned to an active dietary intervention (IG) or a control group (CG). Both groups received the 2007 American Institute for Cancer Research/World Cancer Research Fund recommendations for cancer prevention. The intervention consisted of meetings with kitchen classes, community meals, and dietary recommendations. Recommended foods included whole grain cereals, legumes, soy products, vegetables, fruit, nuts, olive oil, and fish. Foods to be avoided were refined products, potatoes, sugar and desserts, red and processed meat, dairy products, and alcoholic drinks. A compliance Dietary Index was defined by the difference between recommended and discouraged foods. RESULTS Over the 5 years of follow-up, 95 patients of the IG and 98 of the CG developed breast cancer recurrence [HR = 0.99; 95% confidence interval (CI): 0.69-1.40]. The analysis by compliance to the dietary recommendations (IG and CG together) showed that the women in the upper tertile of Dietary Index change had an HR of recurrence of 0.59 (95% CI: 0.36-0.92) compared with women in the lower tertile. CONCLUSIONS The DIANA-5 dietary intervention trial failed to show a reduction in breast cancer recurrence, although self-reported diet at year 1 in IG and CG combined showed a protective association with the higher Dietary Index change. See related commentary by McTiernan, p. 931.
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Affiliation(s)
- Franco Berrino
- Department of Epidemiology and Data Science, S.C. Epidemiology and Prevention, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
- La Grande Via Foundation, Milan, Italy
| | - Anna Villarini
- Department of Medicine and Surgery, Section of Hygiene and Public Health, University of Perugia, Perugia, Italy
| | - Giuliana Gargano
- Department of Epidemiology and Data Science, S.C. Epidemiology and Prevention, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Vittorio Krogh
- Department of Epidemiology and Data Science, S.C. Epidemiology and Prevention, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Sara Grioni
- Department of Epidemiology and Data Science, S.C. Epidemiology and Prevention, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Manuela Bellegotti
- Department of Epidemiology and Data Science, S.C. Epidemiology and Prevention, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Elisabetta Venturelli
- Department of Experimental Oncology, S.S.D. Nutrition Research and Metabolomics, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Milena Raimondi
- Department of Epidemiology and Data Science, S.C. Epidemiology and Prevention, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Adele Traina
- Palermo and Province Cancer Registry, Clinical Epidemiology Unit with Cancer Registry, Azienda Ospedaliera Universitaria Policlinico “Paolo Giaccone”, University of Palermo, Palermo, Italy
| | - Maurizio Zarcone
- Palermo and Province Cancer Registry, Clinical Epidemiology Unit with Cancer Registry, Azienda Ospedaliera Universitaria Policlinico “Paolo Giaccone”, University of Palermo, Palermo, Italy
| | - Rosalba Amodio
- Palermo and Province Cancer Registry, Clinical Epidemiology Unit with Cancer Registry, Azienda Ospedaliera Universitaria Policlinico “Paolo Giaccone”, University of Palermo, Palermo, Italy
| | - Maria Piera Mano
- Dipartimento Scienze Chirurgiche, Study University, Turin, Italy
- S.C. Epidemiologia dei Tumori, AOU Città della Salute e della Scienza, CPO Piemonte, Turin, Italy
| | - Harriet Johansson
- Division of Cancer Prevention and Genetics, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | | | | | | | | | | | | | - Rocco Galasso
- Unit of Regional Cancer Registry, Clinical Epidemiology and Biostatistics, IRCCS-CROB, Rionero in Vulture, Italy
| | - Luciana Del Riccio
- Unit of Regional Cancer Registry, Clinical Epidemiology and Biostatistics, IRCCS-CROB, Rionero in Vulture, Italy
| | | | | | | | - Patrizia Pasanisi
- Department of Experimental Oncology, S.S.D. Nutrition Research and Metabolomics, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Bernardo Bonanni
- Division of Cancer Prevention and Genetics, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Eleonora Bruno
- Department of Experimental Oncology, S.S.D. Nutrition Research and Metabolomics, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
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12
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Argentini C, Lugli GA, Tarracchini C, Fontana F, Mancabelli L, Viappiani A, Anzalone R, Angelini L, Alessandri G, Bianchi MG, Taurino G, Bussolati O, Milani C, van Sinderen D, Turroni F, Ventura M. Ecology- and genome-based identification of the Bifidobacterium adolescentis prototype of the healthy human gut microbiota. Appl Environ Microbiol 2024; 90:e0201423. [PMID: 38294252 PMCID: PMC10880601 DOI: 10.1128/aem.02014-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 11/20/2023] [Indexed: 02/01/2024] Open
Abstract
Bifidobacteria are among the first microbial colonizers of the human gut, being frequently associated with human health-promoting activities. In the current study, an in silico methodology based on an ecological and phylogenomic-driven approach allowed the selection of a Bifidobacterium adolescentis prototype strain, i.e., B. adolescentis PRL2023, which best represents the overall genetic content and functional features of the B. adolescentis taxon. Such features were confirmed by in vitro experiments aimed at evaluating the ability of this strain to survive in the gastrointestinal tract of the host and its ability to interact with human intestinal cells and other microbial gut commensals. In this context, co-cultivation of B. adolescentis PRL2023 and several gut commensals revealed various microbe-microbe interactions and indicated co-metabolism of particular plant-derived glycans, such as xylan.IMPORTANCEThe use of appropriate bacterial strains in experimental research becomes imperative in order to investigate bacterial behavior while mimicking the natural environment. In the current study, through in silico and in vitro methodologies, we were able to identify the most representative strain of the Bifidobacterium adolescentis species. The ability of this strain, B. adolescentis PRL2023, to cope with the environmental challenges imposed by the gastrointestinal tract, together with its ability to switch its carbohydrate metabolism to compete with other gut microorganisms, makes it an ideal choice as a B. adolescentis prototype and a member of the healthy microbiota of adults. This strain possesses a genetic blueprint appropriate for its exploitation as a candidate for next-generation probiotics.
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Affiliation(s)
- Chiara Argentini
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parma, Italy
| | - Gabriele Andrea Lugli
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parma, Italy
- Microbiome Research Hub, University of Parma, Parma, Italy
| | - Chiara Tarracchini
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parma, Italy
| | - Federico Fontana
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parma, Italy
- GenProbio srl, Parma, Italy
| | - Leonardo Mancabelli
- Microbiome Research Hub, University of Parma, Parma, Italy
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | | | | | | | - Giulia Alessandri
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parma, Italy
| | - Massimiliano G. Bianchi
- Microbiome Research Hub, University of Parma, Parma, Italy
- Department of Medicine and Surgery, Laboratory of General Pathology, University of Parma, Parma, Italy
| | - Giuseppe Taurino
- Microbiome Research Hub, University of Parma, Parma, Italy
- Department of Medicine and Surgery, Laboratory of General Pathology, University of Parma, Parma, Italy
| | - Ovidio Bussolati
- Microbiome Research Hub, University of Parma, Parma, Italy
- Department of Medicine and Surgery, Laboratory of General Pathology, University of Parma, Parma, Italy
| | - Christian Milani
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parma, Italy
- Microbiome Research Hub, University of Parma, Parma, Italy
| | - Douwe van Sinderen
- APC Microbiome Institute and School of Microbiology, Bioscience Institute, National University of Ireland, Cork, Ireland
| | - Francesca Turroni
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parma, Italy
- Microbiome Research Hub, University of Parma, Parma, Italy
| | - Marco Ventura
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parma, Italy
- Microbiome Research Hub, University of Parma, Parma, Italy
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13
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Mazzarella L, Falvo P, Adinolfi M, Tini G, Gatti E, Piccioni R, Bonetti E, Gavilán E, Valli D, Gruszka A, Bodini M, Gallo B, Orecchioni S, de Michele G, Migliaccio E, Duso BA, Roerink S, Stratton M, Bertolini F, Alcalay M, Dellino GI, Pelicci PG. High-Fat Diet Promotes Acute Promyelocytic Leukemia through PPARδ-Enhanced Self-renewal of Preleukemic Progenitors. Cancer Prev Res (Phila) 2024; 17:59-75. [PMID: 37956420 DOI: 10.1158/1940-6207.capr-23-0246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/04/2023] [Accepted: 11/09/2023] [Indexed: 11/15/2023]
Abstract
Risk and outcome of acute promyelocytic leukemia (APL) are particularly worsened in obese-overweight individuals, but the underlying molecular mechanism is unknown. In established mouse APL models (Ctsg-PML::RARA), we confirmed that obesity induced by high-fat diet (HFD) enhances leukemogenesis by increasing penetrance and shortening latency, providing an ideal model to investigate obesity-induced molecular events in the preleukemic phase. Surprisingly, despite increasing DNA damage in hematopoietic stem cells (HSC), HFD only minimally increased mutational load, with no relevant impact on known cancer-driving genes. HFD expanded and enhanced self-renewal of hematopoietic progenitor cells (HPC), with concomitant reduction in long-term HSCs. Importantly, linoleic acid, abundant in HFD, fully recapitulates the effect of HFD on the self-renewal of PML::RARA HPCs through activation of peroxisome proliferator-activated receptor delta, a central regulator of fatty acid metabolism. Our findings inform dietary/pharmacologic interventions to counteract obesity-associated cancers and suggest that nongenetic factors play a key role. PREVENTION RELEVANCE Our work informs interventions aimed at counteracting the cancer-promoting effect of obesity. On the basis of our study, individuals with a history of chronic obesity may still significantly reduce their risk by switching to a healthier lifestyle, a concept supported by evidence in solid tumors but not yet in hematologic malignancies. See related Spotlight, p. 47.
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Affiliation(s)
| | - Paolo Falvo
- IRCCS European Institute of Oncology, Milan, Italy
| | | | - Giulia Tini
- IRCCS European Institute of Oncology, Milan, Italy
| | - Elena Gatti
- IRCCS European Institute of Oncology, Milan, Italy
| | | | | | | | - Debora Valli
- IRCCS European Institute of Oncology, Milan, Italy
| | | | | | | | | | | | | | - Bruno A Duso
- IRCCS European Institute of Oncology, Milan, Italy
| | - Sophie Roerink
- Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - Mike Stratton
- Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | | | - Myriam Alcalay
- IRCCS European Institute of Oncology, Milan, Italy
- Department of Oncology and Hemato-Oncology, University of Milan
| | - Gaetano Ivan Dellino
- IRCCS European Institute of Oncology, Milan, Italy
- Department of Oncology and Hemato-Oncology, University of Milan
| | - Pier Giuseppe Pelicci
- IRCCS European Institute of Oncology, Milan, Italy
- Department of Oncology and Hemato-Oncology, University of Milan
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14
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Pietrobono S, Sabbadini F, Bertolini M, Mangiameli D, De Vita V, Fazzini F, Lunardi G, Casalino S, Scarlato E, Merz V, Zecchetto C, Quinzii A, Di Conza G, Lahn M, Melisi D. Autotaxin Secretion Is a Stromal Mechanism of Adaptive Resistance to TGFβ Inhibition in Pancreatic Ductal Adenocarcinoma. Cancer Res 2024; 84:118-132. [PMID: 37738399 PMCID: PMC10758691 DOI: 10.1158/0008-5472.can-23-0104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 08/11/2023] [Accepted: 09/20/2023] [Indexed: 09/24/2023]
Abstract
The TGFβ receptor inhibitor galunisertib demonstrated efficacy in patients with pancreatic ductal adenocarcinoma (PDAC) in the randomized phase II H9H-MC-JBAJ study, which compared galunisertib plus the chemotherapeutic agent gemcitabine with gemcitabine alone. However, additional stromal paracrine signals might confer adaptive resistance that limits the efficacy of this therapeutic strategy. Here, we found that autotaxin, a secreted enzyme that promotes inflammation and fibrosis by generating lysophosphatidic acid (LPA), mediates adaptive resistance to TGFβ receptor inhibition. Blocking TGFβ signaling prompted the skewing of cancer-associated fibroblasts (CAF) toward an inflammatory (iCAF) phenotype. iCAFs were responsible for a significant secretion of autotaxin. Paracrine autotaxin increased LPA-NFκB signaling in tumor cells that triggered treatment resistance. The autotaxin inhibitor IOA-289 suppressed NFκB activation in PDAC cells and overcame resistance to galunisertib and gemcitabine. In immunocompetent orthotopic murine models, IOA-289 synergized with galunisertib in restoring sensitivity to gemcitabine. Most importantly, treatment with galunisertib significantly increased plasma levels of autotaxin in patients enrolled in the H9H-MC-JBAJ study, and median progression-free survival was significantly longer in patients without an increase of autotaxin upon treatment with galunisertib compared with those with increased autotaxin. These results establish that autotaxin secretion by CAFs is increased by TGFβ inhibition and that circulating autotaxin levels predict response to the combination treatment approach of gemcitabine plus galunisertib. SIGNIFICANCE TGFβ inhibition skews cancer-associated fibroblasts toward an inflammatory phenotype that secretes autotaxin to drive adaptive resistance in PDAC, revealing autotaxin as a therapeutic target and biomarker of galunisertib response.
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Affiliation(s)
- Silvia Pietrobono
- Digestive Molecular Clinical Oncology Research Unit, Università degli studi di Verona, Verona, Italy
| | - Fabio Sabbadini
- Digestive Molecular Clinical Oncology Research Unit, Università degli studi di Verona, Verona, Italy
| | - Monica Bertolini
- Digestive Molecular Clinical Oncology Research Unit, Università degli studi di Verona, Verona, Italy
| | - Domenico Mangiameli
- Digestive Molecular Clinical Oncology Research Unit, Università degli studi di Verona, Verona, Italy
| | - Veronica De Vita
- Digestive Molecular Clinical Oncology Research Unit, Università degli studi di Verona, Verona, Italy
| | - Federica Fazzini
- Investigational Cancer Therapeutics Clinical Unit, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Giulia Lunardi
- Digestive Molecular Clinical Oncology Research Unit, Università degli studi di Verona, Verona, Italy
| | - Simona Casalino
- Digestive Molecular Clinical Oncology Research Unit, Università degli studi di Verona, Verona, Italy
| | - Enza Scarlato
- Digestive Molecular Clinical Oncology Research Unit, Università degli studi di Verona, Verona, Italy
| | - Valeria Merz
- Digestive Molecular Clinical Oncology Research Unit, Università degli studi di Verona, Verona, Italy
| | - Camilla Zecchetto
- Digestive Molecular Clinical Oncology Research Unit, Università degli studi di Verona, Verona, Italy
| | - Alberto Quinzii
- Digestive Molecular Clinical Oncology Research Unit, Università degli studi di Verona, Verona, Italy
| | | | | | - Davide Melisi
- Digestive Molecular Clinical Oncology Research Unit, Università degli studi di Verona, Verona, Italy
- Investigational Cancer Therapeutics Clinical Unit, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
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15
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Cirotti C, Taddei I, Contadini C, Di Girolamo C, Pepe G, De Bardi M, Borsellino G, Helmer-Citterich M, Barilà D. NRF2 connects Src tyrosine kinase to ferroptosis resistance in glioblastoma. Life Sci Alliance 2024; 7:e202302205. [PMID: 37879937 PMCID: PMC10599979 DOI: 10.26508/lsa.202302205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/16/2023] [Accepted: 10/16/2023] [Indexed: 10/27/2023] Open
Abstract
Glioblastoma is a severe brain tumor characterized by an extremely poor survival rate of patients. Glioblastoma cancer cells escape to standard therapeutic protocols consisting of a combination of ionizing radiation and temozolomide alkylating drugs that trigger DNA damage by rewiring of signaling pathways. In recent years, the up-regulation of factors that counteract ferroptosis has been highlighted as a major driver of cancer resistance to ionizing radiation, although the molecular connection between the activation of oncogenic signaling and the modulation of ferroptosis has not been clarified yet. Here, we provide the first evidence for a molecular connection between the constitutive activation of tyrosine kinases and resistance to ferroptosis. Src tyrosine kinase, a central hub on which deregulated receptor tyrosine kinase signaling converge in cancer, leads to the stabilization and activation of NRF2 pathway, thus promoting resistance to ionizing radiation-induced ferroptosis. These data suggest that the up-regulation of the Src-NRF2 axis may represent a vulnerability for combined strategies that, by targeting ferroptosis resistance, enhance radiation sensitivity in glioblastoma.
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Affiliation(s)
- Claudia Cirotti
- https://ror.org/02p77k626 Department of Biology, University of Rome "Tor Vergata," Rome, Italy
- Laboratory of Cell Signaling, IRCCS-Fondazione Santa Lucia, Rome, Italy
| | - Irene Taddei
- https://ror.org/02p77k626 Department of Biology, University of Rome "Tor Vergata," Rome, Italy
- Laboratory of Cell Signaling, IRCCS-Fondazione Santa Lucia, Rome, Italy
| | - Claudia Contadini
- https://ror.org/02p77k626 Department of Biology, University of Rome "Tor Vergata," Rome, Italy
- Laboratory of Cell Signaling, IRCCS-Fondazione Santa Lucia, Rome, Italy
- UOSD Preclinical Models and New Therapeutic Agents Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Claudia Di Girolamo
- https://ror.org/02p77k626 Department of Biology, University of Rome "Tor Vergata," Rome, Italy
| | - Gerardo Pepe
- https://ror.org/02p77k626 Department of Biology, University of Rome "Tor Vergata," Rome, Italy
| | - Marco De Bardi
- Neuroimmunology Unit, Experimental Neuroscience, IRCCS Fondazione Santa Lucia, Rome, Italy
| | - Giovanna Borsellino
- Neuroimmunology Unit, Experimental Neuroscience, IRCCS Fondazione Santa Lucia, Rome, Italy
| | | | - Daniela Barilà
- https://ror.org/02p77k626 Department of Biology, University of Rome "Tor Vergata," Rome, Italy
- Laboratory of Cell Signaling, IRCCS-Fondazione Santa Lucia, Rome, Italy
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16
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Conte B, Boni L, Bisagni G, Durando A, Sanna G, Gori S, Garrone O, Tamberi S, De Placido S, Schettini F, Pazzola A, Ponzone R, Montemurro F, Lunardi G, Notaro R, De Angioletti M, Turletti A, Mansutti M, Puglisi F, Frassoldati A, Porpiglia M, Fabi A, Generali D, Scognamiglio G, Rossi M, Brasó-Maristany F, Prat A, Cardinali B, Piccioli P, Serra M, Lastraioli S, Bighin C, Poggio F, Lambertini M, Del Mastro L. SNP of Aromatase Predict Long-term Survival and Aromatase Inhibitor Toxicity in Patients with Early Breast Cancer: A Biomarker Analysis of the GIM4 and GIM5 Trials. Clin Cancer Res 2023; 29:5217-5226. [PMID: 37888299 PMCID: PMC10722129 DOI: 10.1158/1078-0432.ccr-23-1568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/12/2023] [Accepted: 10/09/2023] [Indexed: 10/28/2023]
Abstract
PURPOSE In estrogen receptor-positive (ER+) breast cancer, single-nucleotide polymorphisms (SNP) in the aromatase gene might affect aromatase inhibitors (AI) metabolism and efficacy. Here, we assessed the impact of SNP on prognosis and toxicity of patients receiving adjuvant letrozole. EXPERIMENTAL DESIGN We enrolled 886 postmenopausal patients in the study. They were treated with letrozole for 2 to 5 years after taking tamoxifen for 2 to 6 years, continuing until they completed 5 to 10 years of therapy. Germline DNA was genotyped for SNP rs4646, rs10046, rs749292, and rs727479. Log-rank test and Cox model were used for disease-free survival (DFS) and overall survival (OS). Cumulative incidence (CI) of breast cancer metastasis was assessed through competing risk analysis, with contralateral breast cancer, second malignancies and non-breast cancer death as competing events. CI of skeletal and cardiovascular events were assessed using DFS events as competing events. Subdistribution HR (sHR) with 95% confidence intervals were calculated through Fine-Gray method. RESULTS No SNP was associated with DFS. Variants rs10046 [sHR 2.03, (1.04-2.94)], rs749292 [sHR 2.11, (1.12-3.94)], and rs727479 [sHR 2.62, (1.17-5.83)] were associated with breast cancer metastasis. Three groups were identified on the basis of the number of these variants (0, 1, >1). Variant-based groups were associated with breast cancer metastasis (10-year CI 2.5%, 7.6%, 10.7%, P = 0.035) and OS (10-year estimates 96.5%, 93.0%, 89.6%, P = 0.030). Co-occurrence of rs10046 and rs749292 was negatively associated with 10-year CI of skeletal events (3.2% vs. 10%, P = 0.033). A similar association emerged between rs727479 and cardiovascular events (0.3% vs. 2.1%, P = 0.026). CONCLUSIONS SNP of aromatase gene predict risk of metastasis and AI-related toxicity in ER+ early breast cancer, opening an opportunity for better treatment individualization.
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Affiliation(s)
- Benedetta Conte
- Translational Genomics and Targeted Therapies in Solid Tumors, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), Barcelona, Spain
- Department of Medical Oncology, Hospital Clinic of Barcelona, Barcelona, Spain
- Universitat de Barcelona, Barcelona, Spain
| | - Luca Boni
- S.C. Epidemiologia Clinica, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Giancarlo Bisagni
- Azienda unità Sanitaria Locale – IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Antonio Durando
- Breast Unit Ospedale S Anna, Citta' della Salute e della Scienza di Torino, Torino, Italy
| | - Giovanni Sanna
- Azienda Ospedaliera Universitaria – Sassari, Sassari, Italy
| | - Stefania Gori
- UOC Oncologia Medica, IRCCS Ospedale Sacro Cuore Don Calabria, Negrar, Verona, Italy
| | - Ornella Garrone
- Breast Unit, AO S. Croce e Carle Ospedale di insegnamento, Cuneo, Italy
- Medical Oncology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Milano
| | | | - Sabino De Placido
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Napoli, Italy
| | - Francesco Schettini
- Translational Genomics and Targeted Therapies in Solid Tumors, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), Barcelona, Spain
- Department of Medical Oncology, Hospital Clinic of Barcelona, Barcelona, Spain
- Departament de Medicina, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Spain
| | | | - Riccardo Ponzone
- Candiolo Cancer Institute, FPO-IRCCS, Gynecologic Oncology and Multidisciplinary Outpatient Oncology Clinic, Candiolo, Italy
| | - Filippo Montemurro
- Candiolo Cancer Institute, FPO-IRCCS, Gynecologic Oncology and Multidisciplinary Outpatient Oncology Clinic, Candiolo, Italy
| | - Gianluigi Lunardi
- Laboratorio Analisi Chimico-Cliniche, IRCCS-Ospedale Sacro Cuore Don Calabria, Negrar, Verona, Italy
| | | | - Maria De Angioletti
- Core Research Laboratory-ISPRO, Firenze, Italy
- National Research Council (CNR) - ICCOM, Firenze, Italy
| | | | - Mauro Mansutti
- Department of Oncology, ASUFC Santa Maria della Misericordia, Udine, Italy
| | - Fabio Puglisi
- Department of Medicine, University of Udine, Udine, Italy
- Depatment of Medical Oncology, Centro di Riferimento Oncologico di Aviano IRCCS, Aviano, Italy
| | - Antonio Frassoldati
- Department of Morphology, Surgery and Experimental medicine, Clinical Oncology, St. Anna University Hospital, Ferrara, Italy
| | - Mauro Porpiglia
- Breast Unit Ospedale S. Anna, AOU Città della Salute e della Scienza di Torino, Torino, Italy
| | - Alessandra Fabi
- Medical Oncology, IRCCS Regina Elena National Cancer Institute, Roma, Italy
| | - Daniele Generali
- Medical Oncology, Azienda Istituti Ospitalieri di Cremona, Cremona, Italy
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy
| | | | - Maura Rossi
- SOC Oncologia, ASO SS.Antonio e Biagio, Alessandria, Italy
| | - Fara Brasó-Maristany
- Translational Genomics and Targeted Therapies in Solid Tumors, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), Barcelona, Spain
| | - Aleix Prat
- Translational Genomics and Targeted Therapies in Solid Tumors, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), Barcelona, Spain
- Department of Medical Oncology, Hospital Clinic of Barcelona, Barcelona, Spain
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Napoli, Italy
- Reveal Genomics, Barcelona, Spain
- Institute of Oncology (IOB)-Hospital Quirónsalud, Barcelona, Spain
| | - Barbara Cardinali
- Medical Oncology Department, U.O. Clinica di Oncologia Medica, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Patrizia Piccioli
- Medical Oncology Department, U.O. Clinica di Oncologia Medica, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Martina Serra
- Laboratory of Clinical and Experimental Immunology, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Sonia Lastraioli
- Molecular Diagnostic Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Claudia Bighin
- Medical Oncology Department 2, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Francesca Poggio
- Medical Oncology Department 2, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Matteo Lambertini
- Medical Oncology Department, U.O. Clinica di Oncologia Medica, IRCCS Ospedale Policlinico San Martino, Genova, Italy
- Department of Internal Medicine and Medical Specialties (DiMI), School of Medicine, University of Genova, Genova, Italy
| | - Lucia Del Mastro
- Medical Oncology Department, U.O. Clinica di Oncologia Medica, IRCCS Ospedale Policlinico San Martino, Genova, Italy
- Department of Internal Medicine and Medical Specialties (DiMI), School of Medicine, University of Genova, Genova, Italy
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17
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Perruzza L, Zagaglia C, Vitiello L, Sarshar M, Strati F, Pasqua M, Grassi F, Nicoletti M, Palamara AT, Ambrosi C, Scribano D. The Shigella flexneri virulence factor apyrase is released inside eukaryotic cells to hijack host cell fate. Microbiol Spectr 2023; 11:e0077523. [PMID: 37795996 PMCID: PMC10714728 DOI: 10.1128/spectrum.00775-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 08/19/2023] [Indexed: 10/06/2023] Open
Abstract
IMPORTANCE In this paper, we demonstrated that apyrase is released within the host cell cytoplasm during infection to target the intracellular ATP pool. By degrading intracellular ATP, apyrase contributes to prevent caspases activation, thereby inhibiting the activation of pyroptosis in infected cells. Our results show, for the first time, that apyrase is involved in the modulation of host cell survival, thereby aiding this pathogen to dampen the inflammatory response. This work adds a further piece to the puzzle of Shigella pathogenesis. Due to its increased spread worldwide, prevention and controlling strategies are urgently needed. Overall, this study highlighted apyrase as a suitable target for an anti-virulence therapy to tackle this pathogen.
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Affiliation(s)
- Lisa Perruzza
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Bellinzona, Switzerland
- Humabs BioMed, a subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Carlo Zagaglia
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Laura Vitiello
- Laboratory of Flow Cytometry, IRCCS San Raffaele Roma, Rome, Italy
| | - Meysam Sarshar
- Research Laboratories, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Francesco Strati
- Mucosal Immunology Lab, Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | - Martina Pasqua
- Institute Pasteur Italy, Department of Biology and Biotechnologies "Charles Darwin", Sapienza University of Rome, Rome, Italy
| | - Fabio Grassi
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Mauro Nicoletti
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Anna Teresa Palamara
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Laboratory Affiliated to Institute Pasteur Italia-Cenci Bolognetti Foundation, Rome, Italy
- Department Infectious Diseases, Istituto Superiore di Sanità, Rome, Italy
| | - Cecilia Ambrosi
- Department of Human Sciences and Quality of Life Promotion, San Raffaele University, Rome, Italy
- Laboratory of Microbiology of Chronic-Neurodegenerative Diseases, IRCCS San Raffaele Roma, Rome, Italy
| | - Daniela Scribano
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
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18
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Forni D, Pozzoli U, Cagliani R, Clerici M, Sironi M. Dinucleotide biases in RNA viruses that infect vertebrates or invertebrates. Microbiol Spectr 2023; 11:e0252923. [PMID: 37800906 PMCID: PMC10714974 DOI: 10.1128/spectrum.02529-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 08/12/2023] [Indexed: 10/07/2023] Open
Abstract
IMPORTANCE Akin to a molecular signature, dinucleotide composition can be exploited by the zinc-finger antiviral protein (ZAP) to restrict CpG-rich (and UpA-rich) RNA viruses. ZAP evolved in tetrapods, and it is not encoded by invertebrates and fish. Because a systematic analysis is missing, we analyzed the genomes of RNA viruses that infect vertebrates or invertebrates. We show that vertebrate single-stranded (ss) RNA(+) viruses and, to a lesser extent, double-stranded RNA viruses tend to have stronger CpG bias than invertebrate viruses. Conversely, ssRNA(-) viruses have similar dinucleotide composition whether they infect vertebrates or invertebrates. Analysis of ssRNA(+) viruses that infect mammals, reptiles, and fish indicated that ZAP is unlikely to be a major driver of CpG depletion. We also show that, compared to other coronaviruses, the genome of SARS-CoV-2 is not homogeneously CpG-depleted. Our study provides new insights into virus evolution and strategies for recoding RNA virus genomes.
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Affiliation(s)
- Diego Forni
- Bioinformatics Lab, Scientific Institute IRCCS E. MEDEA, Bosisio Parini, Italy
| | - Uberto Pozzoli
- Bioinformatics Lab, Scientific Institute IRCCS E. MEDEA, Bosisio Parini, Italy
| | - Rachele Cagliani
- Bioinformatics Lab, Scientific Institute IRCCS E. MEDEA, Bosisio Parini, Italy
| | - Mario Clerici
- Department of Physiopathology and Transplantation, University of Milan, Milan, Italy
- Don C. Gnocchi Foundation ONLUS, IRCCS, Milan, Italy
| | - Manuela Sironi
- Bioinformatics Lab, Scientific Institute IRCCS E. MEDEA, Bosisio Parini, Italy
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19
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Berni M, Bolzoni L, Menozzi I, Dodi A, Bracchi C, Morganti M, Scaltriti E, Pongolini S, Tambassi M. Salmonella Derby adaptation to swine and simultaneous attenuation for humans go through decay of Salmonella Pathogenicity Island I. Microbiol Spectr 2023; 11:e0189923. [PMID: 37800927 PMCID: PMC10715017 DOI: 10.1128/spectrum.01899-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 08/09/2023] [Indexed: 10/07/2023] Open
Abstract
IMPORTANCE This study integrated population data with in vitro assessment of virulence phenotypes to unveil that a considerable part of the global population of Salmonella Derby is evolving to enhance its host adaptation to the swine host and that this evolution is simultaneously increasing its attenuation for humans. The study shows that the fixation of deleterious mutations in SPI-1 has a role in this process. This evidence indicates that SPI-1 has a key role for S. Derby virulence in humans but not for its circulation in swine. The results show that genes generally considered essential for Salmonella pathogenesis do not play the same key role for all Salmonella serovars or lineages and/or all hosts. The study helps in understanding the molecular mechanisms underlying the ecology and host adaptation of Salmonella showing that the adaptation process can vary for different types of Salmonella and hosts.
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Affiliation(s)
- Melissa Berni
- Risk Analysis and Genomic Epidemiology Unit, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Parma, Italy
| | - Luca Bolzoni
- Risk Analysis and Genomic Epidemiology Unit, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Parma, Italy
| | - Ilaria Menozzi
- Risk Analysis and Genomic Epidemiology Unit, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Parma, Italy
| | - Alessandra Dodi
- Risk Analysis and Genomic Epidemiology Unit, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Parma, Italy
| | - Chiara Bracchi
- Risk Analysis and Genomic Epidemiology Unit, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Parma, Italy
| | - Marina Morganti
- Risk Analysis and Genomic Epidemiology Unit, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Parma, Italy
| | - Erika Scaltriti
- Risk Analysis and Genomic Epidemiology Unit, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Parma, Italy
| | - Stefano Pongolini
- Risk Analysis and Genomic Epidemiology Unit, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Parma, Italy
| | - Martina Tambassi
- Risk Analysis and Genomic Epidemiology Unit, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Parma, Italy
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Meri S, Magrini E, Mantovani A, Garlanda C. The Yin Yang of Complement and Cancer. Cancer Immunol Res 2023; 11:1578-1588. [PMID: 37902610 DOI: 10.1158/2326-6066.cir-23-0399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/07/2023] [Accepted: 09/12/2023] [Indexed: 10/31/2023]
Abstract
Cancer-related inflammation is a crucial component of the tumor microenvironment (TME). Complement activation occurs in cancer and supports the development of an inflammatory microenvironment. Complement has traditionally been considered a mechanism of immune resistance against cancer, and its activation is known to contribute to the cytolytic effects of antibody-based immunotherapeutic treatments. However, several studies have recently revealed that complement activation may exert protumoral functions by sustaining cancer-related inflammation and immunosuppression through different molecular mechanisms, targeting both the TME and cancer cells. These new discoveries have revealed that complement manipulation can be considered a new strategy for cancer therapies. Here we summarize our current understanding of the mechanisms by which the different elements of the complement system exert antitumor or protumor functions, both in preclinical studies and in human tumorigenesis. Complement components can serve as disease biomarkers for cancer stratification and prognosis and be exploited for tumor treatment.
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Affiliation(s)
- Seppo Meri
- Department of Bacteriology and Immunology and Translational Immunology Research Program, University and University Hospital of Helsinki, Helsinki, Finland
| | | | - Alberto Mantovani
- IRCCS-Humanitas Research Hospital, Milan, Italy
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
- The William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Cecilia Garlanda
- IRCCS-Humanitas Research Hospital, Milan, Italy
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
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21
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Kasiri M, Biffi E, Ambrosini E, Pedrocchi A, Sanger TD. Improvement of speed-accuracy tradeoff during practice of a point-to-point task in children with acquired dystonia. J Neurophysiol 2023; 130:931-940. [PMID: 37584081 PMCID: PMC10649829 DOI: 10.1152/jn.00214.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 07/20/2023] [Indexed: 08/17/2023] Open
Abstract
The tradeoff between speed and accuracy is a well-known constraint for human movement, but previous work has shown that this tradeoff can be modified by practice, and the quantitative relationship between speed and accuracy may be an indicator of skill in some tasks. We have previously shown that children with dystonia are able to adapt their movement strategy in a ballistic throwing game to compensate for increased variability of movement. Here, we test whether children with dystonia can adapt and improve skills learned on a trajectory task. We use a novel task in which children move a spoon with a marble between two targets. Difficulty is modified by changing the depth of the spoon. Our results show that both healthy children and children with acquired dystonia move more slowly with the more difficult spoons, and both groups improve the relationship between speed and spoon difficulty following 1 wk of practice. By tracking the marble position in the spoon, we show that children with dystonia use a larger fraction of the available variability, whereas healthy children adopt a much safer strategy and remain farther from the margins, as well as learning to adapt and have more control over the marble's utilized area by practice. Together, our results show that both healthy children and children with dystonia choose trajectories that compensate for risk and inherent variability, and that the increased variability in dystonia can be modified with continued practice.NEW & NOTEWORTHY This study provides insights into the adaptability of children with dystonia in learning a point-to-point task. We show that these children adjust their strategies to account for increased difficulty in the task. Our findings underscore the potential of task-specific practice in improving motor skills and show higher level of signal-dependent noise can be controlled through repetition and learned strategies, which provides an avenue for the quantitative evaluation of rehabilitation strategies in this challenging group.
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Affiliation(s)
- Maral Kasiri
- Department of Biomedical Engineering, University of California, Irvine, Irvine, California, United States
| | - Emilia Biffi
- Scientific Institute for Research, Hospitalization and Healthcare (IRCCS) Eugenio Medea, Bosisio Parini, Italy
| | - Emilia Ambrosini
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Alessandra Pedrocchi
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Terence D Sanger
- Department of Electrical Engineering and Computer Science, University of California, Irvine, Irvine, California, United States
- Children's Health, Orange County (CHOC), Orange, California, United States
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22
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Ielpo D, Guzzo SM, Porcheddu GF, Viscomi MT, Catale C, Reverte I, Cabib S, Cifani C, Antonucci G, Ventura R, Lo Iacono L, Marchetti C, Andolina D. GABAergic miR-34a regulates Dorsal Raphè inhibitory transmission in response to aversive, but not rewarding, stimuli. Proc Natl Acad Sci U S A 2023; 120:e2301730120. [PMID: 37523544 PMCID: PMC10410731 DOI: 10.1073/pnas.2301730120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 06/26/2023] [Indexed: 08/02/2023] Open
Abstract
The brain employs distinct circuitries to encode positive and negative valence stimuli, and dysfunctions of these neuronal circuits have a key role in the etiopathogenesis of many psychiatric disorders. The Dorsal Raphè Nucleus (DRN) is involved in various behaviors and drives the emotional response to rewarding and aversive experiences. Whether specific subpopulations of neurons within the DRN encode these behaviors with different valence is still unknown. Notably, microRNA expression in the mammalian brain is characterized by tissue and neuronal specificity, suggesting that it might play a role in cell and circuit functionality. However, this specificity has not been fully exploited. Here, we demonstrate that microRNA-34a (miR-34a) is selectively expressed in a subpopulation of GABAergic neurons of the ventrolateral DRN. Moreover, we report that acute exposure to both aversive (restraint stress) and rewarding (chocolate) stimuli reduces GABA release in the DRN, an effect prevented by the inactivation of DRN miR-34a or its genetic deletion in GABAergic neurons in aversive but not rewarding conditions. Finally, miR-34a inhibition selectively reduced passive coping with severe stressors. These data support a role of miR-34a in regulating GABAergic neurotransmitter activity and behavior in a context-dependent manner and suggest that microRNAs could represent a functional signature of specific neuronal subpopulations with valence-specific activity in the brain.
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Affiliation(s)
- Donald Ielpo
- Department of Psychology, Sapienza University, Rome00184, Italy
- Fondazione Santa Lucia Istituto di Ricovero e Cura a Carattere Scientifico, Roma00143, Italy
| | - Serafina M. Guzzo
- School of Pharmacy, Pharmacology Unit, University of Camerino, Camerino62032, Italy
| | - Giovanni F. Porcheddu
- Fondazione Santa Lucia Istituto di Ricovero e Cura a Carattere Scientifico, Roma00143, Italy
- European Brain Research Institute-Fondazione Rita Levi-Montalcini, Rome00161, Italy
| | - Maria Teresa Viscomi
- Department of Life Science and Public Health Section of Histology and Embryology, Università Cattolica del Sacro Cuore, Rome00168, Italy
- Fondazione Policlinico Universitario “A. Gemelli”, Istituto di Ricovero e Cura a Carattere Scientifico, Rome00168, Italy
| | - Clarissa Catale
- Fondazione Santa Lucia Istituto di Ricovero e Cura a Carattere Scientifico, Roma00143, Italy
| | - Ingrid Reverte
- Fondazione Santa Lucia Istituto di Ricovero e Cura a Carattere Scientifico, Roma00143, Italy
- Department of Physiology and Pharmacology, Sapienza University of Rome, Rome00185, Italy
| | - Simona Cabib
- Department of Psychology, Sapienza University, Rome00184, Italy
- Fondazione Santa Lucia Istituto di Ricovero e Cura a Carattere Scientifico, Roma00143, Italy
| | - Carlo Cifani
- School of Pharmacy, Pharmacology Unit, University of Camerino, Camerino62032, Italy
| | - Gabriella Antonucci
- Department of Psychology, Sapienza University, Rome00184, Italy
- Fondazione Santa Lucia Istituto di Ricovero e Cura a Carattere Scientifico, Roma00143, Italy
| | - Rossella Ventura
- Department of Psychology, Sapienza University, Rome00184, Italy
- Fondazione Santa Lucia Istituto di Ricovero e Cura a Carattere Scientifico, Roma00143, Italy
- San Raffaele Istituto di Ricovero e Cura a Carattere Scientifico, Rome00166, Italy
| | - Luisa Lo Iacono
- Fondazione Santa Lucia Istituto di Ricovero e Cura a Carattere Scientifico, Roma00143, Italy
| | - Cristina Marchetti
- European Brain Research Institute-Fondazione Rita Levi-Montalcini, Rome00161, Italy
- Institute of Molecular Biology and Pathology, National Research Council, Rome00185, Italy
| | - Diego Andolina
- Department of Psychology, Sapienza University, Rome00184, Italy
- Fondazione Santa Lucia Istituto di Ricovero e Cura a Carattere Scientifico, Roma00143, Italy
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23
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Mauro S, Bolognesi MM, Villa N, Capitoli G, Furia L, Mascadri F, Zucchini N, Totis M, Faretta M, Galimberti S, Bovo G, Cattoretti G. A DNA damage response-like phenotype defines a third of colon cancers at onset. FASEB J 2023; 37:e23020. [PMID: 37342943 DOI: 10.1096/fj.202300132r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 04/12/2023] [Accepted: 05/23/2023] [Indexed: 06/23/2023]
Abstract
Colon adenocarcinoma (COAD) has a limited range of diversified, personalized therapeutic opportunities, besides DNA hypermutating cases; thus, both new targets or broadening existing strategies for personalized intervention are of interest. Routinely processed material from 246 untreated COADs with clinical follow-up was probed for evidence of DNA damage response (DDR), that is, the gathering of DDR-associated molecules at discrete nuclear spots, by multiplex immunofluorescence and immunohistochemical staining for DDR complex proteins (γH2AX, pCHK2, and pNBS1). We also tested the cases for type I interferon response, T-lymphocyte infiltration (TILs), and mutation mismatch repair defects (MMRd), known to be associated with defects of DNA repair. FISH analysis for chromosome 20q copy number variations was obtained. A total of 33.7% of COAD display a coordinated DDR on quiescent, non-senescent, non-apoptotic glands, irrespective of TP53 status, chromosome 20q abnormalities, and type I IFN response. Clinicopathological parameters did not differentiate DDR+ cases from the other cases. TILs were equally present in DDR and non-DDR cases. DDR+ MMRd cases were preferentially retaining wild-type MLH1. The outcome after 5FU-based chemotherapy was not different in the two groups. DDR+ COAD represents a subgroup not aligned with known diagnostic, prognostic, or therapeutic categories, with potential new targeted treatment opportunities, exploiting the DNA damage repair pathways.
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Affiliation(s)
- Stefania Mauro
- Pathology, Vimercate Hospital, ASST-Brianza, Vimercate, Italy
| | - Maddalena M Bolognesi
- Pathology, Department of Medicine and Surgery, Universitá di Milano-Bicocca, Monza, Italy
| | - Nicoletta Villa
- Genetics, Fondazione IRCCS San Gerardo dei Tintori Monza, Monza, Italy
| | - Giulia Capitoli
- Bicocca Bioinformatics Biostatistics and Bioimaging B4 Center, School of Medicine and Surgery, Universitá di Milano-Bicocca, Monza, Italy
| | - Laura Furia
- Department of Experimental Oncology, European Institute of Oncology IRCCS, Milan, Italy
| | - Francesco Mascadri
- Pathology, Department of Medicine and Surgery, Universitá di Milano-Bicocca, Monza, Italy
| | - Nicola Zucchini
- Pathology, Fondazione IRCCS San Gerardo dei Tintori Monza, Monza, Italy
| | - Mauro Totis
- GI Surgery, Fondazione IRCCS San Gerardo dei Tintori Monza, Monza, Italy
| | - Mario Faretta
- Department of Experimental Oncology, European Institute of Oncology IRCCS, Milan, Italy
| | - Stefania Galimberti
- Bicocca Bioinformatics Biostatistics and Bioimaging B4 Center, School of Medicine and Surgery, Universitá di Milano-Bicocca, Monza, Italy
| | - Giorgio Bovo
- Pathology, Vimercate Hospital, ASST-Brianza, Vimercate, Italy
| | - Giorgio Cattoretti
- Pathology, Department of Medicine and Surgery, Universitá di Milano-Bicocca, Monza, Italy
- Pathology, Fondazione IRCCS San Gerardo dei Tintori Monza, Monza, Italy
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24
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Rizzo SM, Alessandri G, Lugli GA, Fontana F, Tarracchini C, Mancabelli L, Viappiani A, Bianchi MG, Bussolati O, van Sinderen D, Ventura M, Turroni F. Exploring Molecular Interactions between Human Milk Hormone Insulin and Bifidobacteria. Microbiol Spectr 2023; 11:e0066523. [PMID: 37191543 PMCID: PMC10269646 DOI: 10.1128/spectrum.00665-23] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 04/27/2023] [Indexed: 05/17/2023] Open
Abstract
Multiple millennia of human evolution have shaped the chemical composition of breast milk toward an optimal human body fluid for nutrition and protection and for shaping the early gut microbiota of newborns. This biological fluid is composed of water, lipids, simple and complex carbohydrates, proteins, immunoglobulins, and hormones. Potential interactions between hormones present in mother's milk and the microbial community of the newborn are a very fascinating yet unexplored topic. In this context, insulin, in addition to being one of the most prevalent hormones in breast milk, is also involved in a metabolic disease that affects many pregnant women, i.e., gestational diabetes mellitus (GDM). Analysis of 3,620 publicly available metagenomic data sets revealed that the bifidobacterial community varies in relation to the different concentrations of this hormone in breast milk of healthy and diabetic mothers. Starting from this assumption, in this study, we explored possible molecular interactions between this hormone and bifidobacterial strains that represent bifidobacterial species commonly occurring in the infant gut using 'omics' approaches. Our findings revealed that insulin modulates the bifidobacterial community by apparently improving the persistence of the Bifidobacterium bifidum taxon in the infant gut environment compared to other typical infant-associated bifidobacterial species. IMPORTANCE Breast milk is a key factor in modulating the infant's intestinal microbiota composition. Even though the interaction between human milk sugars and bifidobacteria has been extensively studied, there are other bioactive compounds in human milk that may influence the gut microbiota, such as hormones. In this article, the molecular interaction of the human milk hormone insulin and the bifidobacterial communities colonizing the human gut in the early stages of life has been explored. This molecular cross talk was assessed using an in vitro gut microbiota model and then analyzed by various omics approaches, allowing the identification of genes associated with bacterial cell adaptation/colonization in the human intestine. Our findings provide insights into the manner by which assembly of the early gut microbiota may be regulated by host factors such as hormones carried by human milk.
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Affiliation(s)
- Sonia Mirjam Rizzo
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Giulia Alessandri
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Gabriele Andrea Lugli
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Federico Fontana
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
- GenProbio srl, Parma, Italy
| | - Chiara Tarracchini
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Leonardo Mancabelli
- Department of Medicine and Surgery, University of Parma, Parma, Italy
- Interdepartmental Research Centre “Microbiome Research Hub”, University of Parma, Italy
| | | | - Massimiliano G. Bianchi
- Department of Medicine and Surgery, University of Parma, Parma, Italy
- Interdepartmental Research Centre “Microbiome Research Hub”, University of Parma, Italy
| | - Ovidio Bussolati
- Department of Medicine and Surgery, University of Parma, Parma, Italy
- Interdepartmental Research Centre “Microbiome Research Hub”, University of Parma, Italy
| | - Douwe van Sinderen
- APC Microbiome Institute and School of Microbiology, Bioscience Institute, National University of Ireland, Cork, Ireland
| | - Marco Ventura
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
- Interdepartmental Research Centre “Microbiome Research Hub”, University of Parma, Italy
| | - Francesca Turroni
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
- Interdepartmental Research Centre “Microbiome Research Hub”, University of Parma, Italy
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25
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Matteoli M, Pozzi D, Fossati M, Menna E. Immune synaptopathies: how maternal immune activation impacts synaptic function during development. EMBO J 2023:e113796. [PMID: 37161785 DOI: 10.15252/embj.2023113796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/23/2023] [Accepted: 04/17/2023] [Indexed: 05/11/2023] Open
Abstract
In the last two decades, the term synaptopathy has been largely used to underline the concept that impairments of synaptic structure and function are the major determinant of brain disorders, including neurodevelopmental disorders. This notion emerged from the progress made in understanding the genetic architecture of neurodevelopmental disorders, which highlighted the convergence of genetic risk factors onto molecular pathways specifically localized at the synapse. However, the multifactorial origin of these disorders also indicated the key contribution of environmental factors. It is well recognized that inflammation is a risk factor for neurodevelopmental disorders, and several immune molecules critically contribute to synaptic dysfunction. In the present review, we highlight this concept, which we define by the term "immune-synaptopathy," and we discuss recent evidence suggesting a bi-directional link between the genetic architecture of individuals and maternal activation of the immune system in modulating brain developmental trajectories in health and disease.
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Affiliation(s)
- Michela Matteoli
- Laboratory of Pharmacology and Brain Pathology, IRCCS Humanitas Research Hospital, Rozzano, Milano, Italy
- CNR Institute of Neuroscience, Sede Milano, Rozzano, Italy
| | - Davide Pozzi
- Laboratory of Pharmacology and Brain Pathology, IRCCS Humanitas Research Hospital, Rozzano, Milano, Italy
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele (MI), Italy
| | - Matteo Fossati
- Laboratory of Pharmacology and Brain Pathology, IRCCS Humanitas Research Hospital, Rozzano, Milano, Italy
- CNR Institute of Neuroscience, Sede Milano, Rozzano, Italy
| | - Elisabetta Menna
- Laboratory of Pharmacology and Brain Pathology, IRCCS Humanitas Research Hospital, Rozzano, Milano, Italy
- CNR Institute of Neuroscience, Sede Milano, Rozzano, Italy
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26
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Donati G, Nicoli P, Verrecchia A, Vallelonga V, Croci O, Rodighiero S, Audano M, Cassina L, Ghsein A, Binelli G, Boletta A, Mitro N, Amati B. Oxidative stress enhances the therapeutic action of a respiratory inhibitor in MYC-driven lymphoma. EMBO Mol Med 2023:e16910. [PMID: 37158102 DOI: 10.15252/emmm.202216910] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 04/13/2023] [Accepted: 04/21/2023] [Indexed: 05/10/2023] Open
Abstract
MYC is a key oncogenic driver in multiple tumor types, but concomitantly endows cancer cells with a series of vulnerabilities that provide opportunities for targeted pharmacological intervention. For example, drugs that suppress mitochondrial respiration selectively kill MYC-overexpressing cells. Here, we unravel the mechanistic basis for this synthetic lethal interaction and exploit it to improve the anticancer effects of the respiratory complex I inhibitor IACS-010759. In a B-lymphoid cell line, ectopic MYC activity and treatment with IACS-010759 added up to induce oxidative stress, with consequent depletion of reduced glutathione and lethal disruption of redox homeostasis. This effect could be enhanced either with inhibitors of NADPH production through the pentose phosphate pathway, or with ascorbate (vitamin C), known to act as a pro-oxidant at high doses. In these conditions, ascorbate synergized with IACS-010759 to kill MYC-overexpressing cells in vitro and reinforced its therapeutic action against human B-cell lymphoma xenografts. Hence, complex I inhibition and high-dose ascorbate might improve the outcome of patients affected by high-grade lymphomas and potentially other MYC-driven cancers.
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Affiliation(s)
- Giulio Donati
- European Institute of Oncology (IEO) - IRCCS, Milan, Italy
| | - Paola Nicoli
- European Institute of Oncology (IEO) - IRCCS, Milan, Italy
| | | | | | - Ottavio Croci
- Center for Genomic Science of IIT@SEMM, Milan, Italy
| | | | - Matteo Audano
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - Laura Cassina
- IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Aya Ghsein
- European Institute of Oncology (IEO) - IRCCS, Milan, Italy
| | - Giorgio Binelli
- Dipartimento di Biotecnologie e Scienze della Vita, Università dell'Insubria, Varese, Italy
| | | | - Nico Mitro
- European Institute of Oncology (IEO) - IRCCS, Milan, Italy
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - Bruno Amati
- European Institute of Oncology (IEO) - IRCCS, Milan, Italy
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27
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Taverniti V, Krynska H, Venuti A, Straub ML, Sirand C, Lohmann E, Romero-Medina MC, Moro S, Robitaille A, Negroni L, Martinez-Zapien D, Masson M, Tommasino M, Zanier K. The E2F4/p130 Repressor Complex Cooperates with Oncogenic ΔNp73α To Inhibit Gene Expression in Human Papillomavirus 38 E6/E7-Transformed Keratinocytes and in Cancer Cells. mSphere 2023; 8:e0005623. [PMID: 36883841 PMCID: PMC10117100 DOI: 10.1128/msphere.00056-23] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 02/09/2023] [Indexed: 03/09/2023] Open
Abstract
Tumor suppressor p53 and its related proteins, p63 and p73, can be synthesized as multiple isoforms lacking part of the N- or C-terminal regions. Specifically, high expression of the ΔNp73α isoform is notoriously associated with various human malignancies characterized by poor prognosis. This isoform is also accumulated by oncogenic viruses, such as Epstein-Barr virus (EBV), as well as genus beta human papillomaviruses (HPV) that appear to be involved in carcinogenesis. To gain additional insight into ΔNp73α mechanisms, we have performed proteomics analyses using human keratinocytes transformed by the E6 and E7 proteins of the beta-HPV type 38 virus as an experimental model (38HK). We find that ΔNp73α associates with the E2F4/p130 repressor complex through a direct interaction with E2F4. This interaction is favored by the N-terminal truncation of p73 characteristic of ΔNp73 isoforms. Moreover, it is independent of the C-terminal splicing status, suggesting that it could represent a general feature of ΔNp73 isoforms (α, β, γ, δ, ε, ζ, θ, η, and η1). We show that the ΔNp73α-E2F4/p130 complex inhibits the expression of specific genes, including genes encoding for negative regulators of proliferation, both in 38HK and in HPV-negative cancer-derived cell lines. Such genes are not inhibited by E2F4/p130 in primary keratinocytes lacking ΔNp73α, indicating that the interaction with ΔNp73α rewires the E2F4 transcriptional program. In conclusion, we have identified and characterized a novel transcriptional regulatory complex with potential implications in oncogenesis. IMPORTANCE The TP53 gene is mutated in about 50% of human cancers. In contrast, the TP63 and TP73 genes are rarely mutated but rather expressed as ΔNp63 and ΔNp73 isoforms in a wide range of malignancies, where they act as p53 antagonists. Accumulation of ΔNp63 and ΔNp73, which is associated with chemoresistance, can result from infection by oncogenic viruses such as EBV or HPV. Our study focuses on the highly carcinogenic ΔNp73α isoform and uses a viral model of cellular transformation. We unveil a physical interaction between ΔNp73α and the E2F4/p130 complex involved in cell cycle control, which rewires the E2F4/p130 transcriptional program. Our work shows that ΔNp73 isoforms can establish interactions with proteins that do not bind to the TAp73α tumor suppressor. This situation is analogous to the gain-of-function interactions of p53 mutants supporting cellular proliferation.
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Affiliation(s)
- Valerio Taverniti
- International Agency for Research on Cancer (IARC), World Health Organization, Lyon, France
| | - Hanna Krynska
- International Agency for Research on Cancer (IARC), World Health Organization, Lyon, France
- Biotechnology and Cell Signaling (CNRS/Université de Strasbourg, UMR 7242), Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, Illkirch, France
| | - Assunta Venuti
- International Agency for Research on Cancer (IARC), World Health Organization, Lyon, France
| | - Marie-Laure Straub
- Biotechnology and Cell Signaling (CNRS/Université de Strasbourg, UMR 7242), Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, Illkirch, France
| | - Cécilia Sirand
- International Agency for Research on Cancer (IARC), World Health Organization, Lyon, France
| | - Eugenie Lohmann
- International Agency for Research on Cancer (IARC), World Health Organization, Lyon, France
| | | | - Stefano Moro
- Biotechnology and Cell Signaling (CNRS/Université de Strasbourg, UMR 7242), Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, Illkirch, France
| | - Alexis Robitaille
- International Agency for Research on Cancer (IARC), World Health Organization, Lyon, France
| | - Luc Negroni
- Proteomics platform, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC)/INSERM U964/CNRS UMR 7104/Université de Strasbourg, Illkirch, France
| | - Denise Martinez-Zapien
- Biotechnology and Cell Signaling (CNRS/Université de Strasbourg, UMR 7242), Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, Illkirch, France
| | - Murielle Masson
- Biotechnology and Cell Signaling (CNRS/Université de Strasbourg, UMR 7242), Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, Illkirch, France
| | | | - Katia Zanier
- Biotechnology and Cell Signaling (CNRS/Université de Strasbourg, UMR 7242), Ecole Superieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, Illkirch, France
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Scalmani P, Paterra R, Mantegazza M, Avoli M, de Curtis M. Involvement of GABAergic Interneuron Subtypes in 4-Aminopyridine-Induced Seizure-Like Events in Mouse Entorhinal Cortex in Vitro. J Neurosci 2023; 43:1987-2001. [PMID: 36810229 PMCID: PMC10027059 DOI: 10.1523/jneurosci.1190-22.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 12/30/2022] [Accepted: 01/05/2023] [Indexed: 02/23/2023] Open
Abstract
Single-unit recordings performed in temporal lobe epilepsy patients and in models of temporal lobe seizures have shown that interneurons are active at focal seizure onset. We performed simultaneous patch-clamp and field potential recordings in entorhinal cortex slices of GAD65 and GAD67 C57BL/6J male mice that express green fluorescent protein in GABAergic neurons to analyze the activity of specific interneuron (IN) subpopulations during acute seizure-like events (SLEs) induced by 4-aminopyridine (4-AP; 100 μm). IN subtypes were identified as parvalbuminergic (INPV, n = 17), cholecystokinergic (INCCK), n = 13], and somatostatinergic (INSOM, n = 15), according to neurophysiological features and single-cell digital PCR. INPV and INCCK discharged at the start of 4-AP-induced SLEs characterized by either low-voltage fast or hyper-synchronous onset pattern. In both SLE onset types, INSOM fired earliest before SLEs, followed by INPV and INCCK discharges. Pyramidal neurons became active with variable delays after SLE onset. Depolarizing block was observed in ∼50% of cells in each INs subgroup, and it was longer in IN (∼4 s) than in pyramidal neurons (<1 s). As SLE evolved, all IN subtypes generated action potential bursts synchronous with the field potential events leading to SLE termination. High-frequency firing throughout the SLE occurred in one-third of INPV and INSOM We conclude that entorhinal cortex INs are very active at the onset and during the progression of SLEs induced by 4-AP. These results support earlier in vivo and in vivo evidence and suggest that INs have a preferential role in focal seizure initiation and development.SIGNIFICANCE STATEMENT Focal seizures are believed to result from enhanced excitation. Nevertheless, we and others demonstrated that cortical GABAergic networks may initiate focal seizures. Here, we analyzed for the first time the role of different IN subtypes in seizures generated by 4-aminopyridine in the mouse entorhinal cortex slices. We found that in this in vitro focal seizure model, all IN types contribute to seizure initiation and that INs precede firing of principal cells. This evidence is in agreement with the active role of GABAergic networks in seizure generation.
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Affiliation(s)
| | - Rosina Paterra
- Neuro-Oncology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milano 20133, Italy
| | - Massimo Mantegazza
- Université Côte d'Azur, 06560 Valbonne-Sophia Antipolis, France
- Institute of Molecular and Cellular Pharmacology, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7275, Laboratoire d'Excellence/Canaux Ioniques d'Intérêt Thérapeutique, 06650 Valbonne-Sophia Antipolis, France
- Institut National de la Santé et de la Recherche Médicale, 06650 Valbonne-Sophia Antipolis, France
| | - Massimo Avoli
- Montreal Neurological Institute-Hospital, McGill University, Montreal, Quebec H3A 2B4, Canada
- Departments of Neurology and Neurosurgery and Physiology, McGill University, Montreal, Quebec H3A 2B4, Canada
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