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Castellani G, Buccarelli M, D'Alessandris QG, Ilari R, Cappannini A, Pedini F, Boe A, Lulli V, Parolini I, Giannetti S, Biffoni M, Zappavigna V, Marziali G, Pallini R, Ricci-Vitiani L. Extracellular vesicles produced by irradiated endothelial or Glioblastoma stem cells promote tumor growth and vascularization modulating tumor microenvironment. Cancer Cell Int 2024; 24:72. [PMID: 38347567 PMCID: PMC10863174 DOI: 10.1186/s12935-024-03253-0] [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: 11/30/2023] [Accepted: 02/01/2024] [Indexed: 02/15/2024] Open
Abstract
BACKGROUND Glioblastoma (GBM) is the most lethal primary brain tumor in adult, characterized by highly aggressive and infiltrative growth. The current therapeutic management of GBM includes surgical resection followed by ionizing radiations and chemotherapy. Complex and dynamic interplay between tumor cells and tumor microenvironment drives the progression and contributes to therapeutic resistance. Extracellular vesicles (EVs) play a crucial role in the intercellular communication by delivering bioactive molecules in the surrounding milieu modulating tumor microenvironment. METHODS In this study, we isolated by ultracentrifugation EVs from GBM stem-like cell (GSC) lines and human microvascular endothelial cells (HMVECs) exposed or not to ionizing irradiation. After counting and characterization, we evaluated the effects of exposure of GSCs to EVs isolated from endothelial cells and vice versa. The RNA content of EVs isolated from GSC lines and HMVECs exposed or not to ionizing irradiation, was analyzed by RNA-Seq. Periostin (POSTN) and Filamin-B (FLNB) emerged in gene set enrichment analysis as the most interesting transcripts enriched after irradiation in endothelial cell-derived EVs and GSC-derived EVs, respectively. POSTN and FLNB expression was modulated and the effects were analyzed by in vitro assays. RESULTS We confirmed that ionizing radiations increased EV secretion by GSCs and normal endothelial cells, affected the contents of and response to cellular secreted EVs. Particularly, GSC-derived EVs decreased radiation-induced senescence and promoted migration in HMVECs whereas, endothelial cell-derived EVs promoted tumorigenic properties and endothelial differentiation of GSCs. RNA-Seq analysis of EV content, identified FLNB and POSTN as transcripts enriched in EVs isolated after irradiation from GSCs and HMVECs, respectively. Assays performed on POSTN overexpressing GSCs confirmed the ability of POSTN to mimic the effects of endothelial cell-derived EVs on GSC migration and clonogenic abilities and transdifferentiation potential. Functional assays performed on HMVECs after silencing of FLNB supported its role as mediator of the effects of GSC-derived EVs on senescence and migration. CONCLUSION In this study, we identified POSTN and FLNB as potential mediators of the effects of EVs on GSC and HMVEC behavior confirming that EVs play a crucial role in the intercellular communication by delivering bioactive molecules in the surrounding milieu modulating tumor microenvironment.
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Affiliation(s)
- Giorgia Castellani
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Mariachiara Buccarelli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Quintino Giorgio D'Alessandris
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Institutes of Neurosurgery, Catholic University School of Medicine, Rome, Italy
| | - Ramona Ilari
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | | | - Francesca Pedini
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Alessandra Boe
- Core Facilities, Istituto Superiore di Sanità, Rome, Italy
| | - Valentina Lulli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Isabella Parolini
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
- Department of Medicine, University of Udine, Udine, Italy
| | - Stefano Giannetti
- Institute of Human Anatomy, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Mauro Biffoni
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Vincenzo Zappavigna
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Giovanna Marziali
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Roberto Pallini
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Lucia Ricci-Vitiani
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy.
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2
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Hoyte F, Mosnaim G, Safioti G, Brown R, Hill T, Boe A, Li T, Wechsler M. SHORT-ACTING BETA2-AGONIST USE REDUCTION AMONG PATIENTS WITH UNCONTROLLED ASTHMA USING A RELIEVER DIGITAL SYSTEM. Ann Allergy Asthma Immunol 2022. [DOI: 10.1016/j.anai.2022.08.618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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3
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Hoyte F, Mosnaim G, Safioti G, Brown R, Hill T, Boe A, Sagalovich K, Wechsler M. USABILITY SCORES OF A RELIEVER DIGITAL SYSTEM IN PATIENTS WITH UNCONTROLLED ASTHMA. Ann Allergy Asthma Immunol 2022. [DOI: 10.1016/j.anai.2022.08.623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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4
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Hoyte F, Mosnaim G, Safioti G, Brown R, Hill T, Boe A, Sagalovich K, Wechsler M. INHALER TECHNIQUE MAINTENANCE IN PATIENTS WITH UNCONTROLLED ASTHMA USING A RELIEVER DIGITAL SYSTEM. Ann Allergy Asthma Immunol 2022. [DOI: 10.1016/j.anai.2022.08.621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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5
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Musella M, Guarracino A, Manduca N, Galassi C, Ruggiero E, Potenza A, Maccafeo E, Manic G, Mattiello L, Soliman Abdel Rehim S, Signore M, Pietrosanto M, Helmer-Citterich M, Pallocca M, Fanciulli M, Bruno T, De Nicola F, Corleone G, Di Benedetto A, Ercolani C, Pescarmona E, Pizzuti L, Guidi F, Sperati F, Vitale S, Macchia D, Spada M, Schiavoni G, Mattei F, De Ninno A, Businaro L, Lucarini V, Bracci L, Aricò E, Ziccheddu G, Facchiano F, Rossi S, Sanchez M, Boe A, Biffoni M, De Maria R, Vitale I, Sistigu A. Type I IFNs promote cancer cell stemness by triggering the epigenetic regulator KDM1B. Nat Immunol 2022; 23:1379-1392. [PMID: 36002648 PMCID: PMC9477743 DOI: 10.1038/s41590-022-01290-3] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 07/17/2022] [Indexed: 12/14/2022]
Abstract
Cancer stem cells (CSCs) are a subpopulation of cancer cells endowed with high tumorigenic, chemoresistant and metastatic potential. Nongenetic mechanisms of acquired resistance are increasingly being discovered, but molecular insights into the evolutionary process of CSCs are limited. Here, we show that type I interferons (IFNs-I) function as molecular hubs of resistance during immunogenic chemotherapy, triggering the epigenetic regulator demethylase 1B (KDM1B) to promote an adaptive, yet reversible, transcriptional rewiring of cancer cells towards stemness and immune escape. Accordingly, KDM1B inhibition prevents the appearance of IFN-I-induced CSCs, both in vitro and in vivo. Notably, IFN-I-induced CSCs are heterogeneous in terms of multidrug resistance, plasticity, invasiveness and immunogenicity. Moreover, in breast cancer (BC) patients receiving anthracycline-based chemotherapy, KDM1B positively correlated with CSC signatures. Our study identifies an IFN-I → KDM1B axis as a potent engine of cancer cell reprogramming, supporting KDM1B targeting as an attractive adjunctive to immunogenic drugs to prevent CSC expansion and increase the long-term benefit of therapy.
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Affiliation(s)
- Martina Musella
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Andrea Guarracino
- Department of Biology, University of Rome 'Tor Vergata', Rome, Italy.,Genomics Research Centre, Human Technopole, Milan, Italy
| | - Nicoletta Manduca
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Claudia Galassi
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Rome, Italy.,Department of Radiation Oncology, Weill Cornell Medical College, New York, NY, USA
| | - Eliana Ruggiero
- Experimental Hematology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Alessia Potenza
- Experimental Hematology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Ester Maccafeo
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Gwenola Manic
- Italian Institute for Genomic Medicine (IIGM), Candiolo, Italy.,Candiolo Cancer Institute, FPO - IRCCS, Candiolo, Italy
| | - Luca Mattiello
- Italian Institute for Genomic Medicine (IIGM), Candiolo, Italy.,Candiolo Cancer Institute, FPO - IRCCS, Candiolo, Italy
| | - Sara Soliman Abdel Rehim
- Department of Biology, University of Rome 'Tor Vergata', Rome, Italy.,Italian Institute for Genomic Medicine (IIGM), Candiolo, Italy
| | - Michele Signore
- RPPA Unit, Proteomics Area, Core Facilities, Istituto Superiore di Sanità, Rome, Italy
| | - Marco Pietrosanto
- Department of Biology, University of Rome 'Tor Vergata', Rome, Italy
| | | | - Matteo Pallocca
- UOSD Clinical Trial Center, Biostatistics and Bioinformatics, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | | | - Tiziana Bruno
- SAFU Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | | | - Giacomo Corleone
- SAFU Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Anna Di Benedetto
- Pathology Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Cristiana Ercolani
- Pathology Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Edoardo Pescarmona
- Pathology Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Laura Pizzuti
- Division of Medical Oncology 2, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Francesco Guidi
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Rome, Italy.,Fondazione Policlinico Universitario 'A. Gemelli' - IRCCS, Rome, Italy
| | - Francesca Sperati
- UOSD Clinical Trial Center, Biostatistics and Bioinformatics, IRCCS San Gallicano Dermatological Institute, Rome, Italy
| | - Sara Vitale
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Daniele Macchia
- Center of Animal Research and Welfare, Istituto Superiore di Sanità, Rome, Italy
| | - Massimo Spada
- Center of Animal Research and Welfare, Istituto Superiore di Sanità, Rome, Italy
| | - Giovanna Schiavoni
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Fabrizio Mattei
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Adele De Ninno
- Institute for Photonics and Nanotechnologies, Italian National Research Council, Rome, Italy
| | - Luca Businaro
- Institute for Photonics and Nanotechnologies, Italian National Research Council, Rome, Italy
| | - Valeria Lucarini
- Department of Paediatric Haematology/Oncology and of Cell and Gene Therapy, Ospedale Pediatrico Bambino Gesù, IRCCS, Rome, Italy
| | - Laura Bracci
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Eleonora Aricò
- FaBioCell, Core Facilities, Istituto Superiore di Sanità, Rome, Italy
| | - Giovanna Ziccheddu
- Oncogenomics and Epigenetics, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Francesco Facchiano
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Stefania Rossi
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Massimo Sanchez
- Cytometry Unit, Core Facilities, Istituto Superiore di Sanità, Rome, Italy
| | - Alessandra Boe
- Cytometry Unit, Core Facilities, Istituto Superiore di Sanità, Rome, Italy
| | - Mauro Biffoni
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Ruggero De Maria
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Rome, Italy. .,Fondazione Policlinico Universitario 'A. Gemelli' - IRCCS, Rome, Italy.
| | - Ilio Vitale
- Italian Institute for Genomic Medicine (IIGM), Candiolo, Italy. .,Candiolo Cancer Institute, FPO - IRCCS, Candiolo, Italy.
| | - Antonella Sistigu
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Rome, Italy. .,Fondazione Policlinico Universitario 'A. Gemelli' - IRCCS, Rome, Italy. .,Tumor Immunology and Immunotherapy Unit, IRCCS Regina Elena National Cancer Institute, Rome, Italy.
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6
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Castellani G, Buccarelli M, Lulli V, Ilari R, De Luca G, Pedini F, Boe A, Felli N, Biffoni M, Pilozzi E, Marziali G, Ricci-Vitiani L. MiR-378a-3p Acts as a Tumor Suppressor in Colorectal Cancer Stem-Like Cells and Affects the Expression of MALAT1 and NEAT1 lncRNAs. Front Oncol 2022; 12:867886. [PMID: 35814429 PMCID: PMC9263271 DOI: 10.3389/fonc.2022.867886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 05/30/2022] [Indexed: 12/12/2022] Open
Abstract
MiR-378a-3p plays a critical role in carcinogenesis acting as a tumor suppressor, promoting apoptosis and cell cycle arrest and reducing invasion and drug resistance in several human cancers, including colorectal cancer (CRC), where its expression is significantly associated with histological classification and prognosis. In this study, we investigated the biological and cellular processes affected by miR-378a-3p in the context of CRC carcinogenesis. In agreement with the literature, miR-378a-3p is downregulated in our cohort of CRC patients as well as, in 15 patient-derived colorectal cancer stem-like cell (CRC-SC) lines and 8 CRC cell lines, compared to normal mucosae. Restoration of miR-378a-3p restrains tumorigenic properties of CRC and CRC-SC lines, as well as, significantly reduces tumor growth in two CRC-SC xenograft mouse models. We reported that miR-378a-3p modulates the expression of the lncRNAs MALAT1 and NEAT1. Their expression is inversely correlated with that of miR-378a-3p in patient-derived CRC-SC lines. Silencing of miR-378a-3p targets, MALAT1 and NEAT1, significantly impairs tumorigenic properties of CRC-SCs, supporting the critical role of miR-378a-3p in CRC carcinogenesis as a tumor-suppressor factor by establishing a finely tuned crosstalk with lncRNAs MALAT1 and NEAT1.
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Affiliation(s)
- Giorgia Castellani
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Mariachiara Buccarelli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Valentina Lulli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Ramona Ilari
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Gabriele De Luca
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Francesca Pedini
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Alessandra Boe
- Core Facilities, Istituto Superiore di Sanità, Rome, Italy
| | - Nadia Felli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Mauro Biffoni
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Emanuela Pilozzi
- Department of Clinical and Molecular Medicine, UOC Anatomia Patologica, Sant’Andrea Hospital, Sapienza University of Rome, Rome, Italy
| | - Giovanna Marziali
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Lucia Ricci-Vitiani
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
- *Correspondence: Lucia Ricci-Vitiani,
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7
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Francescangeli F, De Angelis ML, Rossi R, Sette G, Eramo A, Boe A, Guardiola O, Tang T, Yu SC, Minchiotti G, Zeuner A. CRIPTO Is a Marker of Chemotherapy-Induced Stem Cell Expansion in Non-Small Cell Lung Cancer. Front Oncol 2022; 12:830873. [PMID: 35719935 PMCID: PMC9200964 DOI: 10.3389/fonc.2022.830873] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 04/28/2022] [Indexed: 01/15/2023] Open
Abstract
Chemotherapy is the mainstay for the treatment of non-small cell lung cancer (NSCLC). However, NSCLC cells are either intrinsically chemoresistant or rapidly develop therapy resistance. Cancer stem cells (CSCs) are widely recognized as the cell population responsible for resistance to systemic therapies, but the molecular responses of CSCs to chemotherapeutic agents are largely unknown. We identified the embryonic protein CRIPTO in stem cell-enriched spheroid cultures of adenocarcinoma (AC) and squamous cell carcinoma (SCC) derived from NSCLC surgical specimens. The CRIPTO-positive population had increased clonogenic capacity and expression of stem cell-related factors. Stemness-related properties were also obtained with forced CRIPTO expression, whereas CRIPTO downregulation resulted in cell cycle blockade and CSCs death. Cell populations positive and negative for CRIPTO expression were interconvertible, and interfering with their reciprocal equilibrium resulted in altered homeostasis of cell expansion both in spheroid cultures and in tumor xenografts. Chemotherapy treatment of NSCLC cells resulted in reduction of cell number followed by increased CRIPTO expression and selective survival of CRIPTO-positive cells. In NSCLC tumor xenografts, chemotherapeutic agents induced partial cell death and tumor stabilization followed by CRIPTO overexpression and tumor progression. Altogether, these findings indicate CRIPTO as a marker of lung CSCs possibly implicated in cancer cell plasticity and post-chemotherapy tumor progression.
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Affiliation(s)
| | - Maria Laura De Angelis
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Rachele Rossi
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Giovanni Sette
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Adriana Eramo
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Alessandra Boe
- Core Facilities, Istituto Superiore di Sanità, Rome, Italy
| | - Ombretta Guardiola
- Stem Cell Fate Laboratory, Institute of Genetics and Biophysics "A. Buzzati Traverso", Consiglio Nazionale delle Ricerche, Naples, Italy
| | - Tao Tang
- Department of Stem Cell and Regenerative Medicine, Institute of Pathology and Southwest Cancer Center, Southwest Hospital, ChongQing, China.,International Joint Research Center for Precision Biotherapy, Ministry of Science and Technology, ChongQing, China
| | - Shi-Cang Yu
- Department of Stem Cell and Regenerative Medicine, Institute of Pathology and Southwest Cancer Center, Southwest Hospital, ChongQing, China.,International Joint Research Center for Precision Biotherapy, Ministry of Science and Technology, ChongQing, China
| | - Gabriella Minchiotti
- Stem Cell Fate Laboratory, Institute of Genetics and Biophysics "A. Buzzati Traverso", Consiglio Nazionale delle Ricerche, Naples, Italy
| | - Ann Zeuner
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
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8
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De Angelis ML, Francescangeli F, Nicolazzo C, Signore M, Giuliani A, Colace L, Boe A, Magri V, Baiocchi M, Ciardi A, Scarola F, Spada M, La Torre F, Gazzaniga P, Biffoni M, De Maria R, Zeuner A. An organoid model of colorectal circulating tumor cells with stem cell features, hybrid EMT state and distinctive therapy response profile. J Exp Clin Cancer Res 2022; 41:86. [PMID: 35260172 PMCID: PMC8903172 DOI: 10.1186/s13046-022-02263-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 01/18/2022] [Indexed: 12/11/2022]
Abstract
Background Circulating tumor cells (CTCs) are responsible for the metastatic dissemination of colorectal cancer (CRC) to the liver, lungs and lymph nodes. CTCs rarity and heterogeneity strongly limit the elucidation of their biological features, as well as preclinical drug sensitivity studies aimed at metastasis prevention. Methods We generated organoids from CTCs isolated from an orthotopic CRC xenograft model. CTCs-derived organoids (CTCDOs) were characterized through proteome profiling, immunohistochemistry, immunofluorescence, flow cytometry, tumor-forming capacity and drug screening assays. The expression of intra- and extracellular markers found in CTCDOs was validated on CTCs isolated from the peripheral blood of CRC patients. Results CTCDOs exhibited a hybrid epithelial-mesenchymal transition (EMT) state and an increased expression of stemness-associated markers including the two homeobox transcription factors Goosecoid and Pancreatic Duodenal Homeobox Gene-1 (PDX1), which were also detected in CTCs from CRC patients. Functionally, CTCDOs showed a higher migratory/invasive ability and a different response to pathway-targeted drugs as compared to xenograft-derived organoids (XDOs). Specifically, CTCDOs were more sensitive than XDOs to drugs affecting the Survivin pathway, which decreased the levels of Survivin and X-Linked Inhibitor of Apoptosis Protein (XIAP) inducing CTCDOs death. Conclusions These results indicate that CTCDOs recapitulate several features of colorectal CTCs and may be used to investigate the features of metastatic CRC cells, to identify new prognostic biomarkers and to devise new potential strategies for metastasis prevention. Supplementary Information The online version contains supplementary material available at 10.1186/s13046-022-02263-y.
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Affiliation(s)
- Maria Laura De Angelis
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy.
| | - Federica Francescangeli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Chiara Nicolazzo
- Department of Molecular Medicine, Liquid Biopsy Unit, Sapienza University, Viale Regina Elena 324, 00161, Rome, Italy
| | - Michele Signore
- RPPA Unit, Proteomics Area, Core Facilities, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Alessandro Giuliani
- Environment and Health Department, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Lidia Colace
- Department of Surgical Sciences, Policlinico Umberto I/Sapienza University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Alessandra Boe
- Core Facilities, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Valentina Magri
- Department of Radiological, Oncological and Pathological Sciences, Sapienza University, Viale del Policlinico 155, 00161, Rome, Italy
| | - Marta Baiocchi
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Antonio Ciardi
- Department of Surgery "Pietro Valdoni", Policlinico Umberto I/Sapienza University, Viale del Policlinico 155, 00161, Rome, Italy
| | - Francesco Scarola
- Department of Surgery "Pietro Valdoni", Policlinico Umberto I/Sapienza University, Viale del Policlinico 155, 00161, Rome, Italy
| | - Massimo Spada
- Center of Animal Research and Welfare, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Filippo La Torre
- Surgical Sciences and Emergency Department, Policlinico Umberto I/Sapienza University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Paola Gazzaniga
- Department of Molecular Medicine, Liquid Biopsy Unit, Sapienza University, Viale Regina Elena 324, 00161, Rome, Italy
| | - Mauro Biffoni
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Ruggero De Maria
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168, Rome, Italy. .,Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy.
| | - Ann Zeuner
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy.
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9
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Buccarelli M, D'Alessandris QG, Matarrese P, Mollinari C, Signore M, Cappannini A, Martini M, D'Aliberti P, De Luca G, Pedini F, Boe A, Biffoni M, Pallini R, Ricci-Vitiani L. Elesclomol-induced increase of mitochondrial reactive oxygen species impairs glioblastoma stem-like cell survival and tumor growth. J Exp Clin Cancer Res 2021; 40:228. [PMID: 34253243 PMCID: PMC8273992 DOI: 10.1186/s13046-021-02031-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 06/29/2021] [Indexed: 01/03/2023]
Abstract
Background Glioblastoma (GBM) is the most common and aggressive primary malignant brain tumor in adults, characterized by a poor prognosis mainly due to recurrence and therapeutic resistance. It has been widely demonstrated that glioblastoma stem-like cells (GSCs), a subpopulation of tumor cells endowed with stem-like properties is responsible for tumor maintenance and progression. Moreover, it has been demonstrated that GSCs contribute to GBM-associated neovascularization processes, through different mechanisms including the transdifferentiation into GSC-derived endothelial cells (GdECs). Methods In order to identify druggable cancer-related pathways in GBM, we assessed the effect of a selection of 349 compounds on both GSCs and GdECs and we selected elesclomol (STA-4783) as the most effective agent in inducing cell death on both GSC and GdEC lines tested. Results Elesclomol has been already described to be a potent oxidative stress inducer. In depth investigation of the molecular mechanisms underlying GSC and GdEC response to elesclomol, confirmed that this compound induces a strong increase in mitochondrial reactive oxygen species (ROS) in both GSCs and GdECs ultimately leading to a non-apoptotic copper-dependent cell death. Moreover, combined in vitro treatment with elesclomol and the alkylating agent temozolomide (TMZ) enhanced the cytotoxicity compared to TMZ alone. Finally, we used our experimental model of mouse brain xenografts to test the combination of elesclomol and TMZ and confirmed their efficacy in vivo. Conclusions Our results support further evaluation of therapeutics targeting oxidative stress such as elesclomol with the aim of satisfying the high unmet medical need in the management of GBM. Supplementary Information The online version contains supplementary material available at 10.1186/s13046-021-02031-4.
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Affiliation(s)
- Mariachiara Buccarelli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Quintino Giorgio D'Alessandris
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy.,Institute of Neurosurgery, Catholic University School of Medicine, Rome, Italy
| | - Paola Matarrese
- Center for Gender Specific Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Cristiana Mollinari
- Institute of Translational Pharmacology, National Research Council, Rome, Italy.,Department of Neuroscience, Istituto Superiore di Sanità, Rome, Italy
| | | | | | - Maurizio Martini
- Institute of Pathology, Catholic University School of Medicine, Rome, Italy
| | - Pierluigi D'Aliberti
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Gabriele De Luca
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Francesca Pedini
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Alessandra Boe
- Core Facilities, Istituto Superiore di Sanità, Rome, Italy
| | - Mauro Biffoni
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Roberto Pallini
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy.,Institute of Neurosurgery, Catholic University School of Medicine, Rome, Italy
| | - Lucia Ricci-Vitiani
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy.
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10
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Buccarelli M, Lulli V, Giuliani A, Signore M, Martini M, D'Alessandris QG, Giannetti S, Novelli A, Ilari R, Giurato G, Boe A, Castellani G, Spartano S, Marangi G, Biffoni M, Genuardi M, Pallini R, Marziali G, Ricci-Vitiani L. Deregulated expression of the imprinted DLK1-DIO3 region in glioblastoma stemlike cells: tumor suppressor role of lncRNA MEG3. Neuro Oncol 2021; 22:1771-1784. [PMID: 32459347 PMCID: PMC7746944 DOI: 10.1093/neuonc/noaa127] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Background Glioblastoma (GBM) stemlike cells (GSCs) are thought to be responsible for the maintenance and aggressiveness of GBM, the most common primary brain tumor in adults. This study aims at elucidating the involvement of deregulations within the imprinted delta-like homolog 1 gene‒type III iodothyronine deiodinase gene (DLK-DIO3) region on chromosome 14q32 in GBM pathogenesis. Methods Real-time PCR analyses were performed on GSCs and GBM tissues. Methylation analyses, gene expression, and reverse-phase protein array profiles were used to investigate the tumor suppressor function of the maternally expressed 3 gene (MEG3). Results Loss of expression of genes and noncoding RNAs within the DLK1-DIO3 region was observed in GSCs and GBM tissues compared with normal brain. This downregulation is mainly mediated by epigenetic silencing. Kaplan–Meier analysis indicated that low expression of MEG3 and MEG8 long noncoding (lnc)RNAs significantly correlated with short survival in GBM patients. MEG3 restoration impairs tumorigenic abilities of GSCs in vitro by inhibiting cell growth, migration, and colony formation and decreases in vivo tumor growth, reducing infiltrative growth. These effects were associated with modulation of genes involved in cell adhesion and epithelial-to-mesenchymal transition (EMT). Conclusion In GBM, MEG3 acts as a tumor suppressor mainly regulating cell adhesion, EMT, and cell proliferation, thus providing a potential candidate for novel GBM therapies.
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Affiliation(s)
| | | | | | - Michele Signore
- Core Facilities, Higher Institute of Health (Istituto Superiore di Sanità), Rome, Italy
| | - Maurizio Martini
- A. Gemelli University Polyclinic Foundation, Scientific Hospitalization and Care Institute (IRCCS), Rome, Italy.,Institutes of Pathology, Catholic University School of Medicine, Rome, Italy
| | - Quintino G D'Alessandris
- A. Gemelli University Polyclinic Foundation, Scientific Hospitalization and Care Institute (IRCCS), Rome, Italy.,Neurosurgery, Catholic University School of Medicine, Rome, Italy
| | - Stefano Giannetti
- A. Gemelli University Polyclinic Foundation, Scientific Hospitalization and Care Institute (IRCCS), Rome, Italy.,Human Anatomy, Catholic University School of Medicine, Rome, Italy
| | - Agnese Novelli
- Genomic Medicine, Catholic University School of Medicine, Rome, Italy
| | - Ramona Ilari
- Department of Oncology and Molecular Medicine Rome, Italy
| | - Giorgio Giurato
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery, and Dentistry, "Scuola Medica Salernitana," University of Salerno, Baronissi, Salerno, Italy.,Genomix4Life Srl, University of Salerno, Baronissi, Salerno, Italy
| | - Alessandra Boe
- Core Facilities, Higher Institute of Health (Istituto Superiore di Sanità), Rome, Italy
| | | | - Serena Spartano
- Genomic Medicine, Catholic University School of Medicine, Rome, Italy
| | - Giuseppe Marangi
- Department of Oncology and Molecular Medicine Rome, Italy.,Genomic Medicine, Catholic University School of Medicine, Rome, Italy
| | - Mauro Biffoni
- Department of Oncology and Molecular Medicine Rome, Italy
| | - Maurizio Genuardi
- A. Gemelli University Polyclinic Foundation, Scientific Hospitalization and Care Institute (IRCCS), Rome, Italy.,Genomic Medicine, Catholic University School of Medicine, Rome, Italy
| | - Roberto Pallini
- A. Gemelli University Polyclinic Foundation, Scientific Hospitalization and Care Institute (IRCCS), Rome, Italy.,Neurosurgery, Catholic University School of Medicine, Rome, Italy
| | - Giovanna Marziali
- Department of Oncology and Molecular Medicine Rome, Italy.,Genomic Medicine, Catholic University School of Medicine, Rome, Italy
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11
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Flego M, Colotti G, Ascione A, Dupuis ML, Petrucci E, Riccioni R, Andreotti M, Raggi C, Boe A, Barca S, Gellini M, Vella S, Mallano A. Isolation and preliminary characterization of a human 'phage display'-derived antibody against neural adhesion molecule-1 antigen interfering with fibroblast growth factor receptor-1 binding. Hum Antibodies 2021; 29:63-84. [PMID: 33164927 DOI: 10.3233/hab-200431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
BACKGROUND The NCAM or CD56 antigen is a cell surface glycoprotein belonging to the immunoglobulin super-family involved in cell-cell and cell-matrix adhesion. NCAM is also over-expressed in many tumour types and is considered a tumour associated antigen, even if its role and biological mechanisms implicated in tumour progression and metastasis have not yet to be elucidated. In particular, it is quite well documented the role of the interaction between the NCAM protein and the fibroblast growth factor receptor-1 in metastasis and invasion, especially in the ovarian cancer progression. OBJECTIVE Here we describe the isolation and preliminary characterization of a novel human anti-NCAM single chain Fragment variable antibody able to specifically bind NCAM-expressing cells, including epithelial ovarian cancer cells. METHODS The antibody was isolate by phage display selection and was characterized by ELISA, FACS analysis and SPR experiments. Interference in EOC migration was analyzed by scratch test. RESULTS It binds a partially linear epitope lying in the membrane proximal region of two fibronectin-like domains with a dissociation constant of 3.43 × 10-8 M. Interestingly, it was shown to interfere with the NCAM-FGFR1 binding and to partially decrease migration of EOC cells. CONCLUSIONS According to our knowledge, this is the first completely human antibody able to interfere with this newly individuated cancer mechanism.
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Affiliation(s)
- Michela Flego
- National Center for Global Health, Istituto Superiore di Sanità, Rome, Italy
| | - Gianni Colotti
- Institute of Molecular Biology and Pathology, Italian National Research Council, c/o Department Biochemical Sciences, Sapienza University of Rome, Rome, Italy
| | - Alessandro Ascione
- National Center for Control and Evaluation of Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Maria Luisa Dupuis
- Center for Gender Specific Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Eleonora Petrucci
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Roberta Riccioni
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Mauro Andreotti
- National Center for Global Health, Istituto Superiore di Sanità, Rome, Italy
| | - Carla Raggi
- National Center for Control and Evaluation of Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Alessandra Boe
- Core Facilities, Istituto Superiore di Sanità, Rome, Italy
| | - Stefano Barca
- National Center for Drug Research and Evaluation Unit of Preclinical and Clinical Evaluation of Medicinal Drugs, Istituto Superiore di Sanità, Rome, Italy
| | - Mara Gellini
- National Center for Global Health, Istituto Superiore di Sanità, Rome, Italy
| | - Stefano Vella
- National Center for Global Health, Istituto Superiore di Sanità, Rome, Italy
| | - Alessandra Mallano
- National Center for Global Health, Istituto Superiore di Sanità, Rome, Italy
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12
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Dattilo R, Mottini C, Camera E, Lamolinara A, Auslander N, Doglioni G, Muscolini M, Tang W, Planque M, Ercolani C, Buglioni S, Manni I, Trisciuoglio D, Boe A, Grande S, Luciani AM, Iezzi M, Ciliberto G, Ambs S, De Maria R, Fendt SM, Ruppin E, Cardone L. Pyrvinium Pamoate Induces Death of Triple-Negative Breast Cancer Stem-Like Cells and Reduces Metastases through Effects on Lipid Anabolism. Cancer Res 2020; 80:4087-4102. [PMID: 32718996 DOI: 10.1158/0008-5472.can-19-1184] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [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: 04/24/2019] [Revised: 05/18/2020] [Accepted: 07/20/2020] [Indexed: 12/19/2022]
Abstract
Cancer stem-like cells (CSC) induce aggressive tumor phenotypes such as metastasis formation, which is associated with poor prognosis in triple-negative breast cancer (TNBC). Repurposing of FDA-approved drugs that can eradicate the CSC subcompartment in primary tumors may prevent metastatic disease, thus representing an effective strategy to improve the prognosis of TNBC. Here, we investigated spheroid-forming cells in a metastatic TNBC model. This strategy enabled us to specifically study a population of long-lived tumor cells enriched in CSCs, which show stem-like characteristics and induce metastases. To repurpose FDA-approved drugs potentially toxic for CSCs, we focused on pyrvinium pamoate (PP), an anthelmintic drug with documented anticancer activity in preclinical models. PP induced cytotoxic effects in CSCs and prevented metastasis formation. Mechanistically, the cell killing effects of PP were a result of inhibition of lipid anabolism and, more specifically, the impairment of anabolic flux from glucose to cholesterol and fatty acids. CSCs were strongly dependent upon activation of lipid biosynthetic pathways; activation of these pathways exhibited an unfavorable prognostic value in a cohort of breast cancer patients, where it predicted high probability of metastatic dissemination and tumor relapse. Overall, this work describes a new approach to target aggressive CSCs that may substantially improve clinical outcomes for patients with TNBC, who currently lack effective targeted therapeutic options. SIGNIFICANCE: These findings provide preclinical evidence that a drug repurposing approach to prevent metastatic disease in TNBC exploits lipid anabolism as a metabolic vulnerability against CSCs in primary tumors.
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Affiliation(s)
- Rosanna Dattilo
- Department of Research, Advanced Diagnostics, and Technological Innovations, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Carla Mottini
- Department of Research, Advanced Diagnostics, and Technological Innovations, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Emanuela Camera
- Laboratory of Cutaneous Physiopathology and Integrated Center for Metabolomics Research, San Gallicano Dermatological Institute (ISG)-IRCCS, Rome, Italy
| | - Alessia Lamolinara
- Department of Medicine and Aging Science, CAST, "G. D'Annunzio" University, Chieti-Pescara, Italy
| | - Noam Auslander
- Center for Cancer Research, NCI, NIH, Bethesda, Maryland
| | - Ginevra Doglioni
- Laboratory of Cellular Metabolism and Metabolic Regulation, VIB Center for Cancer Biology, VIB, Leuven, Belgium
- Laboratory of Cellular Metabolism and Metabolic Regulation, Department of Oncology, KU Leuven and Leuven Cancer Institute (LKI), Leuven, Belgium
| | | | - Wei Tang
- Laboratory of Human Carcinogenesis, Center for Cancer Research, NCI, NIH, Bethesda, Maryland
| | - Melanie Planque
- Laboratory of Cellular Metabolism and Metabolic Regulation, VIB Center for Cancer Biology, VIB, Leuven, Belgium
- Laboratory of Cellular Metabolism and Metabolic Regulation, Department of Oncology, KU Leuven and Leuven Cancer Institute (LKI), Leuven, Belgium
| | - Cristiana Ercolani
- S.C. Anatomia Patologica, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Simonetta Buglioni
- S.C. Anatomia Patologica, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Isabella Manni
- Department of Research, Advanced Diagnostics, and Technological Innovations, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Daniela Trisciuoglio
- Department of Research, Advanced Diagnostics, and Technological Innovations, IRCCS Regina Elena National Cancer Institute, Rome, Italy
- Institute of Molecular Biology and Pathology, CNR National Research Council, Rome, Italy
| | - Alessandra Boe
- Core Facilities, Italian National Institute of Health, Rome, Italy
| | - Sveva Grande
- Centro Nazionale per le Tecnologie Innovative in Sanità Pubblica, Istituto Superiore di Sanità, Rome, Italy
- Istituto Nazionale di Fisica Nucleare INFN Sez. di Roma, Rome, Italy
| | - Anna Maria Luciani
- Centro Nazionale per le Tecnologie Innovative in Sanità Pubblica, Istituto Superiore di Sanità, Rome, Italy
- Istituto Nazionale di Fisica Nucleare INFN Sez. di Roma, Rome, Italy
| | - Manuela Iezzi
- Department of Medicine and Aging Science, CAST, "G. D'Annunzio" University, Chieti-Pescara, Italy
| | - Gennaro Ciliberto
- Scientific Directorate, IRCCS Regina Elena National Cancer Institute, Rome, Italy
| | - Stefan Ambs
- Laboratory of Human Carcinogenesis, Center for Cancer Research, NCI, NIH, Bethesda, Maryland
| | - Ruggero De Maria
- Dipartimento di Medicina e Chirurgia traslazionale, Università Cattolica del Sacro Cuore, Rome, Italy
- Fondazione Policlinico Universitario "A. Gemelli" - IRCCS, Rome, Italy
| | - Sarah-Maria Fendt
- Laboratory of Cellular Metabolism and Metabolic Regulation, VIB Center for Cancer Biology, VIB, Leuven, Belgium
- Laboratory of Cellular Metabolism and Metabolic Regulation, Department of Oncology, KU Leuven and Leuven Cancer Institute (LKI), Leuven, Belgium
| | - Eytan Ruppin
- Center for Cancer Research, NCI, NIH, Bethesda, Maryland.
| | - Luca Cardone
- Department of Research, Advanced Diagnostics, and Technological Innovations, IRCCS Regina Elena National Cancer Institute, Rome, Italy.
- Institute of Biochemistry and Cellular Biology, CNR National Research Council, Rome, Italy
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13
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Lulli V, Buccarelli M, Ilari R, Castellani G, De Dominicis C, Di Giamberardino A, D′Alessandris QG, Giannetti S, Martini M, Stumpo V, Boe A, De Luca G, Biffoni M, Marziali G, Pallini R, Ricci-Vitiani L. Mir-370-3p Impairs Glioblastoma Stem-Like Cell Malignancy Regulating a Complex Interplay between HMGA2/HIF1A and the Oncogenic Long Non-Coding RNA (lncRNA) NEAT1. Int J Mol Sci 2020; 21:ijms21103610. [PMID: 32443824 PMCID: PMC7279259 DOI: 10.3390/ijms21103610] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/15/2020] [Accepted: 05/18/2020] [Indexed: 02/06/2023] Open
Abstract
Glioblastoma (GBM) is the most aggressive and prevalent form of a human brain tumor in adults. Several data have demonstrated the implication of microRNAs (miRNAs) in tumorigenicity of GBM stem-like cells (GSCs). The regulatory functions of miRNAs in GSCs have emerged as potential therapeutic candidates for glioma treatment. The current study aimed at investigating the function of miR-370-3p in glioma progression, as aberrant expression of miR-370-3p, is involved in various human cancers, including glioma. Analyzing our collection of GBM samples and patient-derived GSC lines, we found the expression of miR-370-3p significantly downregulated compared to normal brain tissues and normal neural stem cells. Restoration of miR-370-3p expression in GSCs significantly decreased proliferation, migration, and clonogenic abilities of GSCs, in vitro, and tumor growth in vivo. Gene expression analysis performed on miR-370-3p transduced GSCs, identified several transcripts involved in Epithelial to Mesenchymal Transition (EMT), and Hypoxia signaling pathways. Among the genes downregulated by the restored expression of miR-370-3p, we found the EMT-inducer high-mobility group AT-hook 2 (HMGA2), the master transcriptional regulator of the adaptive response to hypoxia, Hypoxia-inducible factor (HIF)1A, and the long non-coding RNAs (lncRNAs) Nuclear Enriched Abundant Transcript (NEAT)1. NEAT1 acts as an oncogene in a series of human cancers including gliomas, where it is regulated by the Epidermal Growth Factor Receptor (EGFR) pathways, and contributes to tumor growth and invasion. Noteworthy, the expression levels of miR-370-3p and NEAT1 were inversely related in both GBM tumor specimens and GSCs, and a dual-luciferase reporter assay proved the direct binding between miR-370-3p and the lncRNAs NEAT1. Our results identify a critical role of miR-370-3p in the regulation of GBM development, indicating that miR-370-3p acts as a tumor-suppressor factor inhibiting glioma cell growth, migration and invasion by targeting the lncRNAs NEAT1, HMGA2, and HIF1A, thus, providing a potential candidate for GBM patient treatment.
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Affiliation(s)
- Valentina Lulli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy; (V.L.); (M.B.); (R.I.); (G.C.); (C.D.D.); (A.D.G.); (G.D.L.); (M.B.)
| | - Mariachiara Buccarelli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy; (V.L.); (M.B.); (R.I.); (G.C.); (C.D.D.); (A.D.G.); (G.D.L.); (M.B.)
| | - Ramona Ilari
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy; (V.L.); (M.B.); (R.I.); (G.C.); (C.D.D.); (A.D.G.); (G.D.L.); (M.B.)
| | - Giorgia Castellani
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy; (V.L.); (M.B.); (R.I.); (G.C.); (C.D.D.); (A.D.G.); (G.D.L.); (M.B.)
| | - Chiara De Dominicis
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy; (V.L.); (M.B.); (R.I.); (G.C.); (C.D.D.); (A.D.G.); (G.D.L.); (M.B.)
| | - Alessandra Di Giamberardino
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy; (V.L.); (M.B.); (R.I.); (G.C.); (C.D.D.); (A.D.G.); (G.D.L.); (M.B.)
| | - Quintino Giorgio D′Alessandris
- Department of Neuroscience, Institute of Neurosurgery, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario A. Gemelli IRCCS; 00168 Rome, Italy; (Q.G.D.); (V.S.); (R.P.)
| | - Stefano Giannetti
- Department of Neuroscience, Institute of Anatomy, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy;
| | - Maurizio Martini
- Department of Health Science and Public Health, Institute of Pathology, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy;
| | - Vittorio Stumpo
- Department of Neuroscience, Institute of Neurosurgery, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario A. Gemelli IRCCS; 00168 Rome, Italy; (Q.G.D.); (V.S.); (R.P.)
| | - Alessandra Boe
- Core Facilities, Istituto Superiore di Sanità, 00161 Rome, Italy;
| | - Gabriele De Luca
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy; (V.L.); (M.B.); (R.I.); (G.C.); (C.D.D.); (A.D.G.); (G.D.L.); (M.B.)
| | - Mauro Biffoni
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy; (V.L.); (M.B.); (R.I.); (G.C.); (C.D.D.); (A.D.G.); (G.D.L.); (M.B.)
| | - Giovanna Marziali
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy; (V.L.); (M.B.); (R.I.); (G.C.); (C.D.D.); (A.D.G.); (G.D.L.); (M.B.)
- Correspondence: (G.M.); (L.R.-V.)
| | - Roberto Pallini
- Department of Neuroscience, Institute of Neurosurgery, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario A. Gemelli IRCCS; 00168 Rome, Italy; (Q.G.D.); (V.S.); (R.P.)
| | - Lucia Ricci-Vitiani
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy; (V.L.); (M.B.); (R.I.); (G.C.); (C.D.D.); (A.D.G.); (G.D.L.); (M.B.)
- Correspondence: (G.M.); (L.R.-V.)
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14
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Francescangeli F, Contavalli P, De Angelis ML, Careccia S, Signore M, Haas TL, Salaris F, Baiocchi M, Boe A, Giuliani A, Tcheremenskaia O, Pagliuca A, Guardiola O, Minchiotti G, Colace L, Ciardi A, D'Andrea V, La Torre F, Medema J, De Maria R, Zeuner A. A pre-existing population of ZEB2 + quiescent cells with stemness and mesenchymal features dictate chemoresistance in colorectal cancer. J Exp Clin Cancer Res 2020; 39:2. [PMID: 31910865 PMCID: PMC6947904 DOI: 10.1186/s13046-019-1505-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 12/12/2019] [Indexed: 12/28/2022]
Abstract
Background Quiescent/slow cycling cells have been identified in several tumors and correlated with therapy resistance. However, the features of chemoresistant populations and the molecular factors linking quiescence to chemoresistance are largely unknown. Methods A population of chemoresistant quiescent/slow cycling cells was isolated through PKH26 staining (which allows to separate cells on the basis of their proliferation rate) from colorectal cancer (CRC) xenografts and subjected to global gene expression and pathway activation analyses. Factors expressed by the quiescent/slow cycling population were analyzed through lentiviral overexpression approaches for their ability to induce a dormant chemoresistant state both in vitro and in mouse xenografts. The correlation between quiescence-associated factors, CRC consensus molecular subtype and cancer prognosis was analyzed in large patient datasets. Results Untreated colorectal tumors contain a population of quiescent/slow cycling cells with stem cell features (quiescent cancer stem cells, QCSCs) characterized by a predetermined mesenchymal-like chemoresistant phenotype. QCSCs expressed increased levels of ZEB2, a transcription factor involved in stem cell plasticity and epithelial-mesenchymal transition (EMT), and of antiapototic factors pCRAF and pASK1. ZEB2 overexpression upregulated pCRAF/pASK1 levels resulting in increased chemoresistance, enrichment of cells with stemness/EMT traits and proliferative slowdown of tumor xenografts. In parallel, chemotherapy treatment of tumor xenografts induced the prevalence of QCSCs with a stemness/EMT phenotype and activation of the ZEB2/pCRAF/pASK1 axis, resulting in a chemotherapy-unresponsive state. In CRC patients, increased ZEB2 levels correlated with worse relapse-free survival and were strongly associated to the consensus molecular subtype 4 (CMS4) characterized by dismal prognosis, decreased proliferative rates and upregulation of EMT genes. Conclusions These results show that chemotherapy-naive tumors contain a cell population characterized by a coordinated program of chemoresistance, quiescence, stemness and EMT. Such population becomes prevalent upon drug treatment and is responsible for chemotherapy resistance, thus representing a key target for more effective therapeutic approaches.
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Affiliation(s)
- Federica Francescangeli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Paola Contavalli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Maria Laura De Angelis
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Silvia Careccia
- Institute of General Pathology, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168, Rome, Italy
| | - Michele Signore
- RPPA Unit, Proteomics Area, Core Facilities, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Tobias Longin Haas
- Institute of General Pathology, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168, Rome, Italy.,Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy
| | - Federico Salaris
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Marta Baiocchi
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Alessandra Boe
- Core Facilities, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Alessandro Giuliani
- Environment and Health Department, Istituto Superiore di Sanita, Viale Regina Elena 299, 00161, Rome, Italy
| | - Olga Tcheremenskaia
- Environment and Health Department, Istituto Superiore di Sanita, Viale Regina Elena 299, 00161, Rome, Italy
| | - Alfredo Pagliuca
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Ombretta Guardiola
- Stem Cell Fate Laboratory, Institute of Genetics and Biophysics "A. Buzzati Traverso", CNR,Via Pietro Castellino 111, 80131, Naples, Italy
| | - Gabriella Minchiotti
- Stem Cell Fate Laboratory, Institute of Genetics and Biophysics "A. Buzzati Traverso", CNR,Via Pietro Castellino 111, 80131, Naples, Italy
| | - Lidia Colace
- Department of Surgical Sciences, Policlinico Umberto I/Sapienza University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Antonio Ciardi
- Department of Surgery "Pietro Valdoni", Policlinico Umberto I/Sapienza University of Rome, via Lancisi 2, 00161, Rome, Italy
| | - Vito D'Andrea
- Department of Surgical Sciences, Policlinico Umberto I/Sapienza University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Filippo La Torre
- Surgical Sciences and Emergency Department, Policlinico Umberto I/Sapienza University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - JanPaul Medema
- Laboratory for Experimental Oncology and Radiobiology, Center for Experimental and Molecular Medicine, Cancer Center Amsterdam, Academic Medical Center, Meibergdreef 9, 1105, AZ, Amsterdam, The Netherlands
| | - Ruggero De Maria
- Institute of General Pathology, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168, Rome, Italy. .,Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy.
| | - Ann Zeuner
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy.
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15
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Pedini F, De Luca G, Felicetti F, Puglisi R, Boe A, Arasi MB, Fratini F, Mattia G, Spada M, Caporali S, Biffoni M, Giuliani A, Carè A, Felli N. Joint action of miR-126 and MAPK/PI3K inhibitors against metastatic melanoma. Mol Oncol 2019; 13:1836-1854. [PMID: 31115969 PMCID: PMC6717748 DOI: 10.1002/1878-0261.12506] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 04/17/2019] [Accepted: 05/20/2019] [Indexed: 02/03/2023] Open
Abstract
Emerging data support the rationale of combined therapies in advanced melanoma. Specifically, the combined use of drugs with different mechanisms of action can reduce the probability of selecting resistant clones. To identify agents active against melanoma cells, we screened a library of 349 anti‐cancer compounds, currently in clinical use or trials, and selected PIK‐75, an inhibitor of the phosphatidylinositol 3‐kinase/protein kinase B (PI3K/AKT) pathway, as the ‘top active’ drug. PIK‐75 was then used alone or in combination with vemurafenib, the first BRAF inhibitor approved for patients with melanoma harboring BRAF mutations. We identified a combined dose of PIK‐75 and vemurafenib that inhibited both the PI3K/AKT and mitogen‐activated protein kinase pathways, thereby overcoming any compensatory activation. In view of the important tumor suppressor function induced by restoring expression of microRNA (miR)‐126 in metastatic melanoma cells, we examined whether miR‐126 has a synergistic role when included in a triple combination alongside PIK‐75 and vemurafenib. We found that enforced expression of miR‐126 (which alone can reduce tumorigenicity) significantly increased PIK‐75 activity when used as either a single agent or in combination with vemurafenib. Interestingly, PIK‐75 proved to be effective against early passage cell lines derived from patients’ biopsies and on melanoma cell lines resistant to either vemurafenib or dabrafenib, thus suggesting that it potentially has the capability to overcome drug resistance. Finally, the synergistic role played by miR‐126 in combination with vemurafenib and/or PIK‐75 was demonstrated in vivo in mouse xenograft models, in which tumor growth inhibition was associated with increased apoptosis. These results not only show the efficacy of PIK‐75 and vemurafenib co‐treatment but also indicate that restoration of miR‐126 expression in advanced melanoma can enhance their antitumor activity, which may possibly allow dose reduction to decrease adverse events without reducing the therapeutic benefits.
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Affiliation(s)
- Francesca Pedini
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Gabriele De Luca
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Federica Felicetti
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Rossella Puglisi
- Center for Gender Medicine, Oncology Unit, Istituto Superiore di Sanità, Rome, Italy
| | - Alessandra Boe
- Core Facilities, Istituto Superiore di Sanità, Rome, Italy
| | - Maria Beatrice Arasi
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | | | - Gianfranco Mattia
- Center for Gender Medicine, Oncology Unit, Istituto Superiore di Sanità, Rome, Italy
| | - Massimo Spada
- Center of Animal Research and Welfare, Istituto Superiore di Sanità, Rome, Italy
| | - Simona Caporali
- Laboratory of Molecular Oncology, Istituto Dermopatico dell'Immacolata-IRCCS, Rome, Italy
| | - Mauro Biffoni
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Alessandro Giuliani
- Department of Environment and Health, Istituto Superiore di Sanità, Rome, Italy
| | - Alessandra Carè
- Center for Gender Medicine, Oncology Unit, Istituto Superiore di Sanità, Rome, Italy
| | - Nadia Felli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
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16
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Orienti I, Francescangeli F, De Angelis ML, Fecchi K, Bongiorno-Borbone L, Signore M, Peschiaroli A, Boe A, Bruselles A, Costantino A, Eramo A, Salvati V, Sette G, Contavalli P, Zolla L, Oki T, Kitamura T, Spada M, Giuliani A, Baiocchi M, La Torre F, Melino G, Tartaglia M, De Maria R, Zeuner A. A new bioavailable fenretinide formulation with antiproliferative, antimetabolic, and cytotoxic effects on solid tumors. Cell Death Dis 2019; 10:529. [PMID: 31332161 PMCID: PMC6646369 DOI: 10.1038/s41419-019-1775-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 06/26/2019] [Indexed: 02/04/2023]
Abstract
Fenretinide is a synthetic retinoid characterized by anticancer activity in preclinical models and favorable toxicological profile, but also by a low bioavailability that hindered its clinical efficacy in former clinical trials. We developed a new formulation of fenretinide complexed with 2-hydroxypropyl-beta-cyclodextrin (nanofenretinide) characterized by an increased bioavailability and therapeutic efficacy. Nanofenretinide was active in cell lines derived from multiple solid tumors, in primary spheroid cultures and in xenografts of lung and colorectal cancer, where it inhibited tumor growth independently from the mutational status of tumor cells. A global profiling of pathways activated by nanofenretinide was performed by reverse-phase proteomic arrays and lipid analysis, revealing widespread repression of the mTOR pathway, activation of apoptotic, autophagic and DNA damage signals and massive production of dihydroceramide, a bioactive lipid with pleiotropic effects on several biological processes. In cells that survived nanofenretinide treatment there was a decrease of factors involved in cell cycle progression and an increase in the levels of p16 and phosphorylated p38 MAPK with consequent block in G0 and early G1. The capacity of nanofenretinide to induce cancer cell death and quiescence, together with its elevated bioavailability and broad antitumor activity indicate its potential use in cancer treatment and chemoprevention.
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Affiliation(s)
- Isabella Orienti
- Department of Pharmacy and Biotechnology, University of Bologna via San Donato 19/2, 40127, Bologna, Italy
| | - Federica Francescangeli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Maria Laura De Angelis
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Katia Fecchi
- Center for Gender-Specific Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Lucilla Bongiorno-Borbone
- Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Via Montpellier 1, 00133, Rome, Italy
| | - Michele Signore
- RPPA Unit, Proteomics, Core Facilities, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Angelo Peschiaroli
- Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Via Montpellier 1, 00133, Rome, Italy
| | - Alessandra Boe
- Core Facilities, Istituto Superiore di Sanità, Rome, Italy
| | - Alessandro Bruselles
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Angelita Costantino
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy.,Department of Biomedical and Biotechnological Sciences BIOMETEC, University of Catania, via Santa Sofia 97, 95123, Catania, Italy
| | - Adriana Eramo
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Valentina Salvati
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Giovanni Sette
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Paola Contavalli
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Lello Zolla
- DAFNE Department, University Tuscia, Via S. Camillo de Lellis, 01100, Viterbo, Italy
| | - Toshihiko Oki
- Division of Cellular Therapy, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, 108-8639, Japan.,Division of Stem Cell Signaling, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan
| | - Toshio Kitamura
- Division of Cellular Therapy, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, 108-8639, Japan.,Division of Stem Cell Signaling, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan
| | - Massimo Spada
- Center of Animal research and Welfare, Istituto Superiore di Sanità, Rome, Italy
| | - Alessandro Giuliani
- Environment and Health Department, Istituto Superiore di Sanita', Rome, Italy
| | - Marta Baiocchi
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Filippo La Torre
- Surgical Sciences and Emergency Department, Division of Emergency & Trauma Surgery, Emergency Department, Policlinico Umberto I/Sapienza University, Viale del Policlinico 155, 00161, Rome, Italy
| | - Gerry Melino
- Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Via Montpellier 1, 00133, Rome, Italy
| | - Marco Tartaglia
- Genetics and Rare Diseases Research Division, Ospedale Pediatrico Bambino Gesù, Viale di San Paolo 15, 00146, Rome, Italy
| | - Ruggero De Maria
- Institute of General Pathology, Catholic University of the Sacred Heart, Largo Francesco Vito 1, 00168, Rome, Italy.
| | - Ann Zeuner
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy.
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17
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Sciuto MR, Warnken U, Schnölzer M, Valvo C, Brunetto L, Boe A, Biffoni M, Krammer PH, De Maria R, Haas TL. Two-Step Coimmunoprecipitation (TIP) Enables Efficient and Highly Selective Isolation of Native Protein Complexes. Mol Cell Proteomics 2017; 17:993-1009. [PMID: 29217617 DOI: 10.1074/mcp.o116.065920] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 11/22/2017] [Indexed: 11/06/2022] Open
Abstract
Coimmunoprecipitation (co-IP) is one of the most frequently used techniques to study protein-protein (PPIs) or protein-nucleic acid interactions (PNIs). However, the presence of coprecipitated contaminants is a well-recognized issue associated with single-step co-IPs. To overcome this limitation, we developed the two-step co-IP (TIP) strategy that enables sequential coimmunoprecipitations of endogenous protein complexes. TIP can be performed with a broad range of mono- and polyclonal antibodies targeting a single protein or different components of a given complex. TIP results in a highly selective enrichment of protein complexes and thus outperforms single-step co-IPs for downstream applications such as mass spectrometry for the identification of PPIs and quantitative PCR for the analysis of PNIs. We benchmarked TIP for the identification of CD95/FAS-interacting proteins in primary human CD4+ T cells, which recapitulated all major known interactors, but also enabled the proteomics discovery of PPM1G and IPO7 as new interaction partners. For its feasibility and high performance, we propose TIP as an advanced tool for the isolation of highly purified protein-protein and protein-nucleic acid complexes under native expression conditions.
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Affiliation(s)
- Maria Rita Sciuto
- From the ‡Department of Hematology and Oncology, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy;
| | - Uwe Warnken
- §Functional Proteome Analysis, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 580, 69120, Heidelberg, Germany
| | - Martina Schnölzer
- §Functional Proteome Analysis, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 580, 69120, Heidelberg, Germany
| | - Cecilia Valvo
- From the ‡Department of Hematology and Oncology, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy.,¶Institute of General Pathology, Catholic University and Gemelli Polyclinic, Largo F. Vito 1, 00168, Rome, Italy
| | - Lidia Brunetto
- From the ‡Department of Hematology and Oncology, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Alessandra Boe
- From the ‡Department of Hematology and Oncology, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Mauro Biffoni
- From the ‡Department of Hematology and Oncology, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - Peter H Krammer
- ‖Department of Tumor Immunology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Ruggero De Maria
- ¶Institute of General Pathology, Catholic University and Gemelli Polyclinic, Largo F. Vito 1, 00168, Rome, Italy
| | - Tobias L Haas
- From the ‡Department of Hematology and Oncology, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy; .,¶Institute of General Pathology, Catholic University and Gemelli Polyclinic, Largo F. Vito 1, 00168, Rome, Italy
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18
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Haas TL, Sciuto MR, Brunetto L, Valvo C, Signore M, Fiori ME, di Martino S, Giannetti S, Morgante L, Boe A, Patrizii M, Warnken U, Schnölzer M, Ciolfi A, Di Stefano C, Biffoni M, Ricci-Vitiani L, Pallini R, De Maria R. Integrin α7 Is a Functional Marker and Potential Therapeutic Target in Glioblastoma. Cell Stem Cell 2017; 21:35-50.e9. [DOI: 10.1016/j.stem.2017.04.009] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 02/16/2017] [Accepted: 04/20/2017] [Indexed: 12/26/2022]
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19
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Quaranta MT, Spinello I, Paolillo R, Macchia G, Boe A, Ceccarini M, Labbaye C, Macioce P. Identification of β-Dystrobrevin as a Direct Target of miR-143: Involvement in Early Stages of Neural Differentiation. PLoS One 2016; 11:e0156325. [PMID: 27223470 PMCID: PMC4880309 DOI: 10.1371/journal.pone.0156325] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 05/12/2016] [Indexed: 11/25/2022] Open
Abstract
Duchenne Muscular Dystrophy, a genetic disorder that results in a gradual breakdown of muscle, is associated to mild to severe cognitive impairment in about one-third of dystrophic patients. The brain dysfunction is independent of the muscular pathology, occurs early, and is most likely due to defects in the assembly of the Dystrophin-associated Protein Complex (DPC) during embryogenesis. We have recently described the interaction of the DPC component β-dystrobrevin with members of complexes that regulate chromatin dynamics, and suggested that β-dystrobrevin may play a role in the initiation of neuronal differentiation. Since oxygen concentrations and miRNAs appear as well to be involved in the cellular processes related to neuronal development, we have studied how these factors act on β-dystrobrevin and investigated the possibility of their functional interplay using the NTera-2 cell line, a well-established model for studying neurogenesis. We followed the pattern of expression and regulation of β-dystrobrevin during the early stages of neuronal differentiation induced by exposure to retinoic acid (RA) under hypoxia as compared with normoxia, and found that β-dystrobrevin expression is regulated during RA-induced differentiation of NTera-2 cells. We also found that β-dystrobrevin pattern is delayed under hypoxic conditions, together with a delay in the differentiation and an increase in the proliferation rate of cells. We identified miRNA-143 as a direct regulator of β-dystrobrevin expression, demonstrated that β-dystrobrevin is expressed in the nucleus and showed that, in line with our previous in vitro results, β-dystrobrevin is a repressor of synapsin I in live cells. Altogether the newly identified regulatory pathway miR-143/β-dystrobrevin/synapsin I provides novel insights into the functions of β-dystrobrevin and opens up new perspectives for elucidating the molecular mechanisms underlying the neuronal involvement in muscular dystrophy.
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Affiliation(s)
- Maria Teresa Quaranta
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Isabella Spinello
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Rosa Paolillo
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Gianfranco Macchia
- Department of Cell Biology and Neurosciences, Istituto Superiore di Sanità, Rome, Italy
| | - Alessandra Boe
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Marina Ceccarini
- National Centre for Rare Diseases, Istituto Superiore di Sanità, Rome, Italy
| | - Catherine Labbaye
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Pompeo Macioce
- Department of Cell Biology and Neurosciences, Istituto Superiore di Sanità, Rome, Italy
- * E-mail:
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20
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De Angelis ML, Zeuner A, Policicchio E, Russo G, Bruselles A, Signore M, Vitale S, De Luca G, Pilozzi E, Boe A, Stassi G, Ricci-Vitiani L, Amoreo CA, Pagliuca A, Francescangeli F, Tartaglia M, De Maria R, Baiocchi M. Cancer Stem Cell-Based Models of Colorectal Cancer Reveal Molecular Determinants of Therapy Resistance. Stem Cells Transl Med 2016; 5:511-23. [PMID: 26956206 DOI: 10.5966/sctm.2015-0214] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 12/07/2015] [Indexed: 01/01/2023] Open
Abstract
UNLABELLED Colorectal cancer (CRC) therapy mainly relies on the use of conventional chemotherapeutic drugs combined, in a subset of patients, with epidermal growth factor receptor [EGFR]-targeting agents. Although CRC is considered a prototype of a cancer stem cell (CSC)-driven tumor, the effects of both conventional and targeted therapies on the CSC compartment are largely unknown. We have optimized a protocol for colorectal CSC isolation that allowed us to obtain CSC-enriched cultures from primary tumor specimens, with high efficiency. CSC isolation was followed by in vitro and in vivo validation, genetic characterization, and drug sensitivity analysis, thus generating panels of CSC lines with defined patterns of genetic mutations and therapy sensitivity. Colorectal CSC lines were polyclonal and maintained intratumor heterogeneity in terms of somatically acquired mutations and differentiation state. Such CSC-enriched cultures were used to investigate the effects of both conventional and targeted therapies on the CSC compartment in vivo and to generate a proteomic picture of signaling pathways implicated in sensitivity/resistance to anti-EGFR agents. We propose CSC lines as a sound preclinical framework to test the effects of therapies in vitro and in vivo and to identify novel determinants of therapy resistance. SIGNIFICANCE Colorectal cancer stem cells (CSCs) have been shown to be responsible for tumor propagation, metastatic dissemination, and relapse. However, molecular pathways present in CSCs, as well as mechanisms of therapy resistance, are mostly unknown. Taking advantage of genetically characterized CSC lines derived from colorectal tumors, this study provides an extensive analysis of CSC response to EGFR-targeted therapy in vivo and an overview of factors implicated in therapy response or resistance. Furthermore, the implementation of a biobank of molecularly annotated CSC lines provides an innovative resource for future investigations in colorectal cancer.
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Affiliation(s)
- Maria Laura De Angelis
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Ann Zeuner
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Eleonora Policicchio
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy Department of Experimental Medicine, Università "La Sapienza," Rome, Italy
| | - Giorgio Russo
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy Istituto Nazionale Tumori Regina Elena, Rome, Italy
| | - Alessandro Bruselles
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Michele Signore
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Sara Vitale
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy Istituto Nazionale Tumori Regina Elena, Rome, Italy
| | - Gabriele De Luca
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Emanuela Pilozzi
- Department of Clinical and Molecular Medicine, Ospedale S. Andrea, Università "La Sapienza," Rome, Italy
| | - Alessandra Boe
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Giorgio Stassi
- Department of Surgical and Oncological Sciences, Università di Palermo, Palermo, Italy
| | - Lucia Ricci-Vitiani
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | | | - Alfredo Pagliuca
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Federica Francescangeli
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy Istituto Nazionale Tumori Regina Elena, Rome, Italy
| | - Marco Tartaglia
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy Ospedale Pediatrico Bambino Gesù, Rome, Italy
| | | | - Marta Baiocchi
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
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21
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Calzolari A, Saulle E, De Angelis ML, Pasquini L, Boe A, Pelacchi F, Ricci-Vitiani L, Baiocchi M, Testa U. Salinomycin potentiates the cytotoxic effects of TRAIL on glioblastoma cell lines. PLoS One 2014; 9:e94438. [PMID: 24740347 PMCID: PMC3989199 DOI: 10.1371/journal.pone.0094438] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Accepted: 03/17/2014] [Indexed: 01/02/2023] Open
Abstract
Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) has been reported to exhibit therapeutic activity in cancer. However, many tumors remain resistant to treatment with TRAIL. Therefore, small molecules that potentiate the cytotoxic effects of TRAIL could be used for combinatorial therapy. Here we found that the ionophore antibiotic salinomycin acts in synergism with TRAIL, enhancing TRAIL-induced apoptosis in glioma cells. Treatment with low doses of salinomycin in combination with TRAIL augmented the activation of caspase-3 and increased TRAIL-R2 cell surface expression. TRAIL-R2 upmodulation was required for mediating the stimulatory effect of salinomycin on TRAIL-mediated apoptosis, since it was abrogated by siRNA-mediated TRAIL-R2 knockdown. Salinomycin in synergism with TRAIL exerts a marked anti-tumor effect in nude mice xenografted with human glioblastoma cells. Our results suggest that the combination of TRAIL and salinomycin may be a useful tool to overcome TRAIL resistance in glioma cells and may represent a potential drug for treatment of these tumors. Importantly, salinomycin+TRAIL were able to induce cell death of well-defined glioblastoma stem-like lines.
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Affiliation(s)
- Alessia Calzolari
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Ernestina Saulle
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Maria Laura De Angelis
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Luca Pasquini
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Alessandra Boe
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Federica Pelacchi
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Lucia Ricci-Vitiani
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Marta Baiocchi
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Ugo Testa
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
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22
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Chirullo B, Sgarbanti R, Limongi D, Shytaj IL, Alvarez D, Das B, Boe A, DaFonseca S, Chomont N, Liotta L, Petricoin EI, Norelli S, Pelosi E, Garaci E, Savarino A, Palamara AT. A candidate anti-HIV reservoir compound, auranofin, exerts a selective 'anti-memory' effect by exploiting the baseline oxidative status of lymphocytes. Cell Death Dis 2013; 4:e944. [PMID: 24309931 PMCID: PMC3877546 DOI: 10.1038/cddis.2013.473] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 10/26/2013] [Accepted: 10/31/2013] [Indexed: 01/05/2023]
Abstract
Central memory (TCM) and transitional memory (TTM) CD4+ T cells are known to be the major cellular reservoirs for HIV, as these cells can harbor a transcriptionally silent form of viral DNA that is not targeted by either the immune system or current antiretroviral drug regimens. In the present study, we explored the molecular bases of the anti-HIV reservoir effects of auranofin (AF), a pro-oxidant gold-based drug and a candidate compound for a cure of AIDS. We here show that TCM and TTM lymphocytes have lower baseline antioxidant defenses as compared with their naive counterpart. These differences are mirrored by the effects exerted by AF on T-lymphocytes: AF was able to exert a pro-differentiating and pro-apoptotic effect, which was more pronounced in the memory subsets. AF induced an early activation of the p38 mitogen-activated protein kinase (p38 MAPK) followed by mitochondrial depolarization and a final burst in intracellular peroxides. The pro-differentiating effect was characterized by a downregulation of the CD27 marker expression. Interestingly, AF-induced apoptosis was inhibited by pyruvate, a well-known peroxide scavenger, but pyruvate did not inhibit the pro-differentiating effect of AF, indicating that the pro-apoptotic and pro-differentiating effects involve different pathways. In conclusion, our results demonstrate that AF selectively targets the TCM/TTM lymphocyte subsets, which encompass the HIV reservoir, by affecting redox-sensitive cell death pathways.
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Affiliation(s)
- B Chirullo
- Istituto Superiore di Sanità, Viale Regina Elena, 299, Rome, Italy
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23
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Petrini M, Felicetti F, Bottero L, Errico MC, Morsilli O, Boe A, De Feo A, Carè A. HOXB1 restored expression promotes apoptosis and differentiation in the HL60 leukemic cell line. Cancer Cell Int 2013; 13:101. [PMID: 24148231 PMCID: PMC3874656 DOI: 10.1186/1475-2867-13-101] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Accepted: 10/19/2013] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Homeobox (HOX) genes deregulation has been largely implicated in the development of human leukemia. Among the HOXB cluster, HOXB1 was silent in a number of analyzed acute myeloid leukemia (AML) primary cells and cell lines, whereas it was expressed in normal terminally differentiated peripheral blood cells. METHODS We evaluated the biological effects and the transcriptome changes determined by the retroviral transduction of HOXB1 in the human promyelocytic cell line HL60. RESULTS Our results suggest that the enforced expression of HOXB1 reduces cell growth proliferation, inducing apoptosis and cell differentiation along the monocytic and granulocytic lineages. Accordingly, gene expression analysis showed the HOXB1-dependent down-regulation of some tumor promoting genes, paralleled by the up-regulation of apoptosis- and differentiation-related genes, thus supporting a tumor suppressor role for HOXB1 in AML. Finally, we indicated HOXB1 promoter hypermethylation as a mechanism responsible for HOXB1 silencing. CONCLUSIONS We propose HOXB1 as an additional member of the HOX family with tumour suppressor properties suggesting a HOXB1/ATRA combination as a possible future therapeutic strategy in AML.
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Affiliation(s)
- Marina Petrini
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore Sanità, Rome 00161, Italy
| | - Federica Felicetti
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore Sanità, Rome 00161, Italy
| | - Lisabianca Bottero
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore Sanità, Rome 00161, Italy
| | - Maria Cristina Errico
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore Sanità, Rome 00161, Italy
| | - Ornella Morsilli
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore Sanità, Rome 00161, Italy
| | - Alessandra Boe
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore Sanità, Rome 00161, Italy
| | - Alessandra De Feo
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore Sanità, Rome 00161, Italy
| | - Alessandra Carè
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore Sanità, Rome 00161, Italy
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24
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Errico MC, Felicetti F, Bottero L, Mattia G, Boe A, Felli N, Petrini M, Bellenghi M, Pandha HS, Calvaruso M, Tripodo C, Colombo MP, Morgan R, Carè A. The abrogation of the HOXB7/PBX2 complex induces apoptosis in melanoma through the miR-221&222-c-FOS pathway. Int J Cancer 2013; 133:879-92. [PMID: 23400877 PMCID: PMC3812682 DOI: 10.1002/ijc.28097] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Accepted: 01/23/2013] [Indexed: 12/25/2022]
Abstract
Cutaneous melanoma is the fastest increasing cancer worldwide. Although several molecular abnormalities have been associated with melanoma progression, the underlying mechanisms are still largely unknown and few targeted therapies are under evaluation. Here we show that the HOXB7/PBX2 dimer acts as a positive transcriptional regulator of the oncogenic microRNA-221 and -222. In addition, demonstrating c-FOS as a direct target of miR-221&222, we identify a HOXB7/PBX2→miR-221&222 →c-FOS regulatory link, whereby the abrogation of functional HOXB7/PBX2 dimers leads to reduced miR-221&222 transcription and elevated c-FOS expression with consequent cell death. Taking advantage of the treatment with the peptide HXR9, an antagonist of HOX/PBX dimerization, we recognize miR-221&222 as effectors of its action, in turn confirming the HXR9 efficacy in the treatment of human melanoma malignancy, whilst sparing normal human melanocytes. Our findings, besides suggesting the potential therapeutic of HXR9 or its derivatives in malignant melanoma, suggest the disruption of the HOXB7/PBX2 complexes, miR-221&222 inhibition or even better their combination, as innovative therapeutic approaches.
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Affiliation(s)
- M Cristina Errico
- Department of Hematology, Oncology, and Molecular Medicine, Istituto Superiore Sanità, Rome, Italy
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25
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Signore M, Cerio AM, Boe A, Pagliuca A, Zaottini V, Schiavoni I, Fedele G, Petti S, Navarra S, Ausiello CM, Pelosi E, Fatica A, Sorrentino A, Valtieri M. Identity and ranking of colonic mesenchymal stromal cells. J Cell Physiol 2012; 227:3291-300. [PMID: 22170005 DOI: 10.1002/jcp.24027] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Although ongoing clinical trials utilize systemic administration of bone-marrow mesenchymal stromal cells (BM-MSCs) in Crohn's disease (CD), nothing is known about the presence and the function of mesenchymal stromal cells (MSCs) in the normal human bowel. MSCs are bone marrow (BM) multipotent cells supporting hematopoiesis with the potential to differentiate into multiple skeletal phenotypes. A recently identified new marker, CD146, allowing to prospectively isolate MSCs from BM, renders also possible their identification in different tissues. In order to elucidate the presence and functional role of MSCs in human bowel we analyzed normal adult colon sections and isolated MSCs from them. In colon (C) sections, resident MSCs form a net enveloping crypts in lamina propria, coinciding with structural myofibroblasts or interstitial stromal cells. Nine sub-clonal CD146(+) MSC lines were derived and characterized from colon biopsies, in addition to MSC lines from five other human tissues. In spite of a phenotype qualitative identity between the BM- and C-MSC populations, they were discriminated and categorized. Similarities between C-MSC and BM-MSCs are represented by: Osteogenic differentiation, hematopoietic supporting activity, immune-modulation, and surface-antigen qualitative expression. The differences between these populations are: C-MSCs mean intensity expression is lower for CD13, CD29, and CD49c surface-antigens, proliferative rate faster, life-span shorter, chondrogenic differentiation rare, and adipogenic differentiation completely blocked. Briefly, BM-MSCs, deserve the rank of progenitors, whereas C-MSCs belong to the restricted precursor hierarchy. The presence and functional role of MSCs in human colon provide a rationale for BM-MSC replacement therapy in CD, where resident bowel MSCs might be exhausted or diverted from their physiological functions.
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Affiliation(s)
- Michele Signore
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
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26
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Felli N, Felicetti F, Lustri A, Errico M, Cannistraci A, DeFeo A, Bottero L, Boe A, Mattia G, Carè A. 360 Functional Cross-regulation Between MiR-126/-126* and MiR-221/-222 in Melanoma. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)71048-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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27
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Gedye KR, Gonzalez-Hernandez JL, Owens V, Boe A. Advances towards a Marker-Assisted Selection Breeding Program in Prairie Cordgrass, a Biomass Crop. Int J Plant Genomics 2012; 2012:313545. [PMID: 23227036 PMCID: PMC3513731 DOI: 10.1155/2012/313545] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Accepted: 10/29/2012] [Indexed: 05/22/2023]
Abstract
Prairie cordgrass (Spartina pectinata Bosc ex Link) is an indigenous, perennial grass of North America that is being developed into a cellulosic biomass crop suitable for biofuel production. Limited research has been performed into the breeding of prairie cordgrass; this research details an initial investigation into the development of a breeding program for this species. Genomic libraries enriched for four simple sequence repeat (SSR) motifs were developed, 25 clones from each library were sequenced, identifying 70 SSR regions, and primers were developed for these regions, 35 of which were amplified under standard PCR conditions. These SSR markers were used to validate the crossing methodology of prairie cordgrass and it was found that crosses between two plants occurred without the need for emasculation. The successful cross between two clones of prairie cordgrass indicates that this species is not self-incompatible. The results from this research will be used to instigate the production of a molecular map of prairie cordgrass which can be used to incorporate marker-assisted selection (MAS) protocols into a breeding program to improve this species for cellulosic biomass production.
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Affiliation(s)
- K. R. Gedye
- Department of Plant Sciences, South Dakota State University, Brookings, SD 57007, USA
| | - J. L. Gonzalez-Hernandez
- Department of Plant Sciences, South Dakota State University, Brookings, SD 57007, USA
- *J. L. Gonzalez-Hernandez:
| | - V. Owens
- Department of Plant Sciences, South Dakota State University, Brookings, SD 57007, USA
| | - A. Boe
- Department of Plant Sciences, South Dakota State University, Brookings, SD 57007, USA
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28
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Mattia G, Errico MC, Felicetti F, Petrini M, Bottero L, Tomasello L, Romania P, Boe A, Segnalini P, Di Virgilio A, Colombo MP, Carè A. Constitutive activation of the ETS-1-miR-222 circuitry in metastatic melanoma. Pigment Cell Melanoma Res 2011; 24:953-65. [PMID: 21711453 PMCID: PMC3272348 DOI: 10.1111/j.1755-148x.2011.00881.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Revised: 06/23/2011] [Indexed: 01/13/2023]
Abstract
MicroRNAs-221 and -222 are highly upregulated in several solid tumors, including melanomas. We demonstrate that the proto-oncogene ETS-1, involved in the pathogenesis of cancers of different origin, is a transcriptional regulator of miR-222 by direct binding to its promoter region. Differently from 293FT cells or early stage melanomas, where unphosphorylated ETS-1 represses miR-222 transcription, in metastatic melanoma the constitutively Thr-38 phosphorylated fraction of ETS-1 induces miR-222. Despite its stepwise decreased expression along with melanoma progression, the oncogenic activity of ETS-1 relies on its RAS/RAF/ERK-dependent phosphorylation status more than on its total amount. To close the loop, we demonstrate ETS-1 as a direct target of miR-222, but not miR-221, showing the novel option of their uncoupled functions. In addition, a spatial redistribution of ETS-1 protein from the nucleus to the cytoplasm is also evidenced in advanced melanoma cells. Finally, in vivo studies confirmed the contribution of miR-222 to the increased invasive potential obtained by ETS- silencing.
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Affiliation(s)
- Gianfranco Mattia
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore SanitàRome, Italy
| | - M Cristina Errico
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore SanitàRome, Italy
| | - Federica Felicetti
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore SanitàRome, Italy
| | - Marina Petrini
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore SanitàRome, Italy
| | - Lisabianca Bottero
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore SanitàRome, Italy
| | - Luisa Tomasello
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore SanitàRome, Italy
| | - Paolo Romania
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore SanitàRome, Italy
| | - Alessandra Boe
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore SanitàRome, Italy
| | - Patrizia Segnalini
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore SanitàRome, Italy
| | - Antonio Di Virgilio
- Service for Quality and Safety of Animal Experimentation, Istituto Superiore di SanitàRome, Italy
| | - Mario P Colombo
- Immunotherapy and Gene Therapy Unit, Department of Experimental Oncology, Fondazione IRCCS Istituto Nazionale TumoriMilan, Italy
| | - Alessandra Carè
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore SanitàRome, Italy
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Lulli V, Romania P, Riccioni R, Boe A, Lo-Coco F, Testa U, Marziali G. Transcriptional silencing of the ETS1 oncogene contributes to human granulocytic differentiation. Haematologica 2010; 95:1633-41. [PMID: 20435626 DOI: 10.3324/haematol.2010.023267] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Ets-1 is a widely expressed transcription factor implicated in several biological processes including hematopoiesis, where it contributes to the regulation of cellular differentiation. The functions of Ets-1 are regulated by transcription factors as well as by phosphorylation events: phosphorylation of threonine 38 activates Ets-1, whereas phosphorylation of a cluster of serines within exon VII reduces DNA binding activity. This study focuses on the role of Ets-1 during granulocytic differentiation of NB4 promyelocytic and HL60 myeloblastic leukemia cell lines induced by all-trans retinoic acid. DESIGN AND METHODS Ets-1 expression was measured by real-time reverse transcriptase polymerase chain reaction and western blotting. The role of Ets-1 during all-trans retinoic acid-induced differentiation was analyzed by using a transdominant negative molecule or small interfering RNA. RESULTS NB4 and HL60 cell lines expressed high levels of p51 Ets-1, while the splice variant isoform that lacks exon VII (p42) was almost undetectable. The addition of all-trans retinoic acid reduced p51 Ets-1 levels and induced inhibitory phosphorylation of the remaining protein. Expression of Ets-1 was also reduced during dimethylsulfoxide-induced differentiation and during granulocytic differentiation of human CD34(+) hematopoietic progenitor cells but not in NB4.R2 and HL60R cells resistant to all-trans retinoic acid. In line with these observations, transduction of a transdominant negative molecule of Ets-1, which inhibited DNA binding and transcriptional activity of the wild-type Ets-1, significantly increased chemical-induced differentiation. Consistently, Ets-1 knockdown by small interfering RNA increased the number of mature neutrophils upon addition of all-trans retinoic acid. Interestingly, p51 Ets-1 over-expression was frequently observed in CD34(+) hematopoietic progenitor cells derived from patients with acute myeloid leukemia, as compared to its expression in normal CD34(+) cells. CONCLUSIONS Our results indicated that a decreased expression of Ets-1 protein generalizes to granulocytic differentiation and may represent a crucial event for granulocytic maturation.
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Affiliation(s)
- Valentina Lulli
- Dept. of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, viale Regina Elena 299, Rome, Italy
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30
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Calzolari A, Larocca LM, Deaglio S, Finisguerra V, Boe A, Raggi C, Ricci-Vitani L, Pierconti F, Malavasi F, De Maria R, Testa U, Pallini R. Transferrin receptor 2 is frequently and highly expressed in glioblastomas. Transl Oncol 2010. [PMID: 20360937 DOI: 10.1539/tlo.09274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023] Open
Abstract
Under physiological conditions, transferrin receptor 2 (TfR2) is expressed in the liver and its balance is related to the cell cycle rather than to intracellular iron levels. We recently showed that TfR2 is highly expressed in glioblastoma cell lines. Here, we demonstrate that, in these cells, TfR2 appears to localize in lipid rafts, induces extracellular signal-regulated kinase 1/2 phosphorylation after transferrin binding, and contributes to cell proliferation, as shown by RNA silencing experiments. In vitro hypoxic conditions induce a significant TfR2 up-regulation, suggesting a role in tumor angiogenesis. As assessed by immunohistochemistry, the level of TfR2 expression in astrocytic tumors is related to histologic grade, with the highest expression observed in glioblastomas. The level of TfR2 expression represents a favorable prognostic factor, which is associated with the higher sensitivity to temozolomide of TfR2-positive tumor cells in vitro. The endothelial cells of glioblastoma vasculature also stain for TfR2, whereas those of the normal brain vessels do not. Importantly, TfR2 is expressed by the subpopulation of glioblastoma cells with properties of cancer-initiating cells. TfR2-positive glioblastoma cells retain their TfR2 expression on xenografting in immunodeficient mice. In conclusion, our observations demonstrate that TfR2 is a neoantigen for astrocytomas that seems attractive for developing target therapies.
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Affiliation(s)
- Alessia Calzolari
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
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31
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Riccioni R, Diverio D, Riti V, Buffolino S, Mariani G, Boe A, Cedrone M, Ottone T, Foà R, Testa U. Interleukin (IL)-3/granulocyte macrophage-colony stimulating factor/IL-5 receptor alpha and beta chains are preferentially expressed in acute myeloid leukaemias with mutated FMS-related tyrosine kinase 3 receptor. Br J Haematol 2009; 144:376-87. [DOI: 10.1111/j.1365-2141.2008.07491.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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32
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Riccioni R, Senese M, Diverio D, Riti V, Mariani G, Boe A, LoCoco F, Foà R, Peschle C, Sporn M, Testa U. Resistance of acute myeloid leukemic cells to the triterpenoid CDDO-Imidazolide is associated with low caspase-8 and FADD levels. Leuk Res 2008; 32:1244-58. [PMID: 18304628 DOI: 10.1016/j.leukres.2007.12.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2007] [Revised: 12/12/2007] [Accepted: 12/20/2007] [Indexed: 12/22/2022]
Abstract
The synthetic triterpenoid CDDO-Im-induced apoptosis of patient-derived AML blasts: 11/25 AMLs were highly sensitive, while the remaining were moderately sensitive to CDDO-Im. The addition of TRAIL significantly potentiated the cytotoxic effect of CDDO-Im, through mechanisms involving the induction of TRAIL-R1/TRAIL-R2 and downmodulation of TRAIL-R3/TRAIL-R4. Biochemical studies showed that CDDO-Im: induced a rapid and marked GSH depletion and antioxidants (GSH or NAC) completely inhibited its pro-apoptotic effect; sequentially activated caspase-8, -9 and -3; caspase inhibitors partially protected AML blasts from CDDO-Im-induced apoptosis; resistance of AML blasts to CDDO-Im-induced apoptosis correlated with low caspase-8/FADD and high Bcl-X(L) expression in leukemic blasts.
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Affiliation(s)
- Roberta Riccioni
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
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33
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Riccioni R, Senese M, Diverio D, Riti V, Buffolino S, Mariani G, Boe A, Cedrone M, Lo-Coco F, Foà R, Peschle C, Testa U. M4 and M5 acute myeloid leukaemias display a high sensitivity to Bortezomib-mediated apoptosis. Br J Haematol 2007; 139:194-205. [PMID: 17897295 DOI: 10.1111/j.1365-2141.2007.06757.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The present study explored the sensitivity of leukaemic blasts derived from 30 acute myeloid leukaemia (AML) patients to Bortezomib. Bortezomib induced apoptosis of primary AML blasts: 18/30 AMLs were clearly sensitive to the proapoptotic effects of Bortezomib, while the remaining cases were moderately sensitive to this molecule. The addition of tumour necrosis factor-related-apoptosis-inducing ligand, when used alone, did not induce apoptosis of AML blasts and further potentiated the cytotoxic effects of Bortezomib. The majority of AMLs sensitive to Bortezomib showed immunophenotypic features of the M4 and M5 French-American-British classification subtypes and displayed myelomonocytic features. All AMLs with mutated FLT3 were in the Bortezomib-sensitive group. Biochemical studies showed that: (i) Bortezomib activated caspase-8 and caspase-3 and decreased cellular FLICE [Fas-associated death domain (FADD)-like interleukin-1beta-converting enzyme]-inhibitory protein (c-FLIP) levels in AML blasts; (ii) high c-FLIP levels in AML blasts were associated with low Bortezomib sensitivity. Finally, analysis of the effects of Bortezomib on leukaemic cells displaying high aldehyde dehydrogenase activity suggested that this drug induced in vitro killing of leukaemic stem cells. The findings of the present study, further support the development of Bortezomib as an anti-leukaemic drug and provide simple tools to predict the sensitivity of AML cells to this drug.
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MESH Headings
- Aldehyde Dehydrogenase/metabolism
- Apoptosis
- Boronic Acids/therapeutic use
- Bortezomib
- CASP8 and FADD-Like Apoptosis Regulating Protein/analysis
- CASP8 and FADD-Like Apoptosis Regulating Protein/metabolism
- Caspase 3/metabolism
- Caspase 8/metabolism
- Cells, Cultured
- Fas-Associated Death Domain Protein/analysis
- Fas-Associated Death Domain Protein/metabolism
- Flow Cytometry
- Humans
- Immunophenotyping
- Leukemia, Monocytic, Acute/drug therapy
- Leukemia, Monocytic, Acute/pathology
- Leukemia, Myelomonocytic, Acute/drug therapy
- Leukemia, Myelomonocytic, Acute/pathology
- Protease Inhibitors/therapeutic use
- Pyrazines/therapeutic use
- Receptors, TNF-Related Apoptosis-Inducing Ligand/analysis
- Stem Cells/drug effects
- TNF-Related Apoptosis-Inducing Ligand/analysis
- X-Linked Inhibitor of Apoptosis Protein/analysis
- X-Linked Inhibitor of Apoptosis Protein/metabolism
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Affiliation(s)
- Roberta Riccioni
- Department of Haematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
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Abstract
Saposin B (Sap B) is a member of a family of four small glycoproteins, Sap A, B, C, and D. Like the other three saposins, Sap B plays a physiological role in the lysosomal degradation of sphingolipids (SLs). Although the interaction of Sap B with SLs has been investigated extensively, that with the main membrane lipid components, namely phospholipids and cholesterol (Chol), is scarcely known. Using large unilamellar vesicles (LUVs) as membrane models, we have now found that Sap B simultaneously extracts from the lipid surface neutral [phosphatidylcholine (PC)] and anionic [phosphatidylinositol (PI)] phospholipids, fewer SLs [ganglioside GM1 (GM1) or cerebroside sulfate (CS)], and no Chol. More PI than SL (GM1 or CS) was solubilized from LUVs containing equal amounts of PI and SLs. An increase in PI level had a poor effect on the Sap B-induced solubilization of GM1 or CS but strongly inhibited that of PC. Sap B was able not only to bind, but also to transfer phospholipids between lipid surfaces. Both the phospholipid binding and transfer activities were optimal at low pH values. These results represent the first biochemical analysis of the Sap B interaction with phospholipids. The capacity of Sap B to bind and transfer phospholipids occurs under conditions mimicking the interior of the late endosomal/lysosomal compartment and thus might have physiological relevance.
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Affiliation(s)
- Fiorella Ciaffoni
- Department of Hematology, Oncology, and Molecular Medicine, Istituto Superiore Sanita, Roma, Italy
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35
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Jauert P, Schumacher TE, Boe A, Reese RN. Rhizosphere acidification and cadmium uptake by strawberry clover. J Environ Qual 2002; 31:627-633. [PMID: 11931455] [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] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Strawberry clover (Trifolium fragiferum L.) is a hardy legume found in indigenous or introduced populations throughout the world. Tolerance to saline and alkaline soils, flooding, and heavy metals make it a good prospect for reclamation projects. The research, described here, was conducted to: (i) characterize the morphological variation in plants from available seed sources, (ii) evaluate cadmium uptake and tolerances over a wide range of morphological variants, and (iii) elucidate the variability in the effects of roots on rhizosphere pH and the relationship to cadmium uptake. Seeds from selected accessions were planted in the greenhouse for comparison of morphological variation. The accessions examined had a mean height of 10.7+/-7 cm. Accessions 254916 and 237925 are tall with high rhizosphere pH values and might be useful in phytoremediation. Strawberry clover accessions were also grown hydroponically to examine differences in cadmium uptake. The ability of strawberry clover roots to change rhizosphere pH and take up cadmium was examined using culture tubes containing nutrient agar, a moderate level of cadmium, and a pH indicator dye. The results provided evidence for a negative correlation between rhizosphere pH and cadmium uptake.
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Affiliation(s)
- P Jauert
- Dep. of Biology and Microbiology, Plant Science Dep., South Dakota State Univ., Brookings 57007, USA
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Boe A, Baiocchi M, Carbonatto M, Papoian R, Serlupi-Crescenzi O. Interleukin 6 knock-out mice are resistant to antigen-induced experimental arthritis. Cytokine 1999; 11:1057-64. [PMID: 10623431 DOI: 10.1006/cyto.1999.0502] [Citation(s) in RCA: 102] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In order to assess the potential role of IL-6 in rheumatoid arthritis (RA), we have compared IL-6 deficient (IL-6 ko) mice and their wild-type (wt) counterpart for the capacity to develop methylated bovine serum albumin (mBSA)-induced arthritis. Our data show that IL-6 ko mice are not susceptible to antigen-induced arthritis (AIA). In fact, IL-6 ko mice treated by a standard protocol of immunization with mBSA did not develop joint swelling following intra-articular mBSA injection, nor revealed the characteristic joint lesions by histological examination. Conversely, wt mice treated according to the same protocol developed arthritis about 9 days after intra-articular injection, as detected by knee joint swelling and histological confirmation. We observed that the proliferative response of splenocytes to mBSA was impaired in ko mice following arthritis induction, as compared to the strong response observed in wt mice. Furthermore, anti-mBSA IgG levels were lower in ko mice as compared to wt mice. Finally, we show that sensitivity to AIA can be reconstituted in ko mice by subcutaneous injections of recombinant human IL-6 (rhIL-6). In addition, co-administration of IL-6 with mBSA by intra-articular injection into the joint was only partially effective in conferring sensitivity to AIA, suggesting the importance of a systemic effct for IL-6, but also that an additional role for this cytokine can be envisaged in the local inflammatory reaction during establishment of AIA.
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Affiliation(s)
- A Boe
- Drug Discovery Department, Istituto di Ricerca Cesare Serono SpA, Ardea, Rome, Italy
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Boe A, Canosi U, Donini S, Mastrangeli R, Ythier A, Crescenzi OS. Determination of haptoglobin expression in IL-6 treated HepG2 cells by ELISA and by RNA hybridization--evaluation of a quantitative method to measure IL-6. J Immunol Methods 1994; 171:157-67. [PMID: 8195587 DOI: 10.1016/0022-1759(94)90036-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Interleukin-6 (IL-6) is known to be an important modulator of acute phase (AP) protein expression in hepatocytes both in vivo and in vitro. In the present study the inducing activity of IL-6 on the expression of the AP protein haptoglobin (HP) by the human hepatoma cell line HepG2, has been evaluated. HP mRNA inducibility was analysed by Northern and slot-blot hybridization, while HP protein was detected by means of an ELISA procedure. A dose-response relationship from 0.3 to 4.8 ng/ml of a human recombinant IL-6 preparation derived from a Chinese hamster ovary (CHO) cell line was observed after 48 h of treatment. Comparable results were obtained by analysing both HP mRNA expression and HP protein secretion. Detectable induction of HP protein secretion was observed with as little as 25 pg/ml of IL-6. The effect of IL-6 was potentiated by dexamethasone, while an inhibition on HP mRNA inducibility could be prevented by lowering the foetal calf serum (FCS) concentration to 1%. Preliminary data indicate that neither IL-1 beta nor TNF-alpha were able to induce significantly HP mRNA expression and protein secretion. The activity ratio between two IL-6 preparations (from CHO and E. coli cells) obtained with a conventional IL-6 bioassay (i.e., T1165 cell growth assay) was comparable to that obtained in the induction of HP expression. The nominal specific activity of the CHO-derived IL-6 was two to three times higher with both responses.
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Affiliation(s)
- A Boe
- Istituto di Ricerca Cesare Serono, Ardea, Rome, Italy
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Abstract
There is concern among researchers whether the passive muscle properties, characterized by purely passive material testing procedures, are an appropriate representation of the actual passive component of the muscle. This aspect is of particular importance in the biomechanical analysis of heart muscle response where it is generally agreed that the so-called parallel elasticity cannot be ignored as is done justifiably in the analysis of skeletal muscle response. In the present article, a method of quantifying the passive elasticity in contracting muscle bundles is presented. The method consists of imposing isometric transients (such as the quick-stretch or quick release) on a muscle bundle during the contraction phase and observing the differences in decayed force levels between a normal twitch and that of a perturbed twitch. The proposed method provides a means of obtaining useful passive properties from contracting muscle bundles and circumvents the difficulty of having to characterize muscle properties from separate experiments on quiescent muscle bundles.
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Affiliation(s)
- J G Pinto
- Department of Mechanical Engineering, San Diego State University, California 92182-0191
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