1
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Tittarelli A, Pereda C, Gleisner MA, López MN, Flores I, Tempio F, Lladser A, Achour A, González FE, Durán-Aniotz C, Miranda JP, Larrondo M, Salazar-Onfray F. Long-Term Survival and Immune Response Dynamics in Melanoma Patients Undergoing TAPCells-Based Vaccination Therapy. Vaccines (Basel) 2024; 12:357. [PMID: 38675738 PMCID: PMC11053591 DOI: 10.3390/vaccines12040357] [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: 12/05/2023] [Revised: 01/05/2024] [Accepted: 01/06/2024] [Indexed: 04/28/2024] Open
Abstract
Cancer vaccines present a promising avenue for treating immune checkpoint blockers (ICBs)-refractory patients, fostering immune responses to modulate the tumor microenvironment. We revisit a phase I/II trial using Tumor Antigen-Presenting Cells (TAPCells) (NCT06152367), an autologous antigen-presenting cell vaccine loaded with heat-shocked allogeneic melanoma cell lysates. Initial findings showcased TAPCells inducing lysate-specific delayed-type hypersensitivity (DTH) reactions, correlating with prolonged survival. Here, we extend our analysis over 15 years, categorizing patients into short-term (<36 months) and long-term (≥36 months) survivors, exploring novel associations between clinical outcomes and demographic, genetic, and immunologic parameters. Notably, DTHpos patients exhibit a 53.1% three-year survival compared to 16.1% in DTHneg patients. Extended remissions are observed in long-term survivors, particularly DTHpos/M1cneg patients. Younger age, stage III disease, and moderate immune events also benefit short-term survivors. Immunomarkers like increased C-type lectin domain family 2 member D on CD4+ T cells and elevated interleukin-17A were detected in long-term survivors. In contrast, toll-like receptor-4 D229G polymorphism and reduced CD32 on B cells are associated with reduced survival. TAPCells achieved stable long remissions in 35.2% of patients, especially M1cneg/DTHpos cases. Conclusions: Our study underscores the potential of vaccine-induced immune responses in melanoma, emphasizing the identification of emerging biological markers and clinical parameters for predicting long-term remission.
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Affiliation(s)
- Andrés Tittarelli
- Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación, Universidad Tecnológica Metropolitana, Santiago 8940577, Chile;
| | - Cristian Pereda
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile; (C.P.); (M.A.G.); (M.N.L.); (I.F.); (F.T.)
| | - María A. Gleisner
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile; (C.P.); (M.A.G.); (M.N.L.); (I.F.); (F.T.)
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
| | - Mercedes N. López
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile; (C.P.); (M.A.G.); (M.N.L.); (I.F.); (F.T.)
| | - Iván Flores
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile; (C.P.); (M.A.G.); (M.N.L.); (I.F.); (F.T.)
| | - Fabián Tempio
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile; (C.P.); (M.A.G.); (M.N.L.); (I.F.); (F.T.)
| | - Alvaro Lladser
- Centro Científico y Tecnológico de Excelencia Ciencia & Vida, Fundación Ciencia & Vida, Santiago 8580702, Chile;
- Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago 8580702, Chile
| | - Adnane Achour
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institute, 17176 Stockholm, Sweden;
- Division of Infectious Diseases, Karolinska University Hospital, 17176 Stockholm, Sweden
| | - Fermín E. González
- Laboratory of Experimental Immunology & Cancer, Faculty of Dentistry, Universidad de Chile, Santiago 8380000, Chile;
| | - Claudia Durán-Aniotz
- Latin American Brain Health Institute (BrainLat), Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibañez, Santiago 7941169, Chile;
| | | | - Milton Larrondo
- Banco de Sangre, Hospital Clínico de la Universidad de Chile, Santiago 8380453, Chile;
| | - Flavio Salazar-Onfray
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile; (C.P.); (M.A.G.); (M.N.L.); (I.F.); (F.T.)
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institute, 17176 Stockholm, Sweden;
- Division of Infectious Diseases, Karolinska University Hospital, 17176 Stockholm, Sweden
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2
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Borgini A, Veronese C, De Marco C, Boffi R, Tittarelli A, Bertoldi M, Fern Ndez E, Tigova O, Gallus S, Lugo A, Gorini G, Carreras G, L Pez MJ, Continente X, Semple S, Dobson R, Clancy L, Keogan S, Tzortzi A, Vardavas C, Nicol S LP, Starchenko P, Soriano JB, Ruprecht AA. Particulate matter in aerosols produced by two last generation electronic cigarettes: a comparison in a real-world environment. Pulmonology 2024; 30:137-144. [PMID: 33879426 DOI: 10.1016/j.pulmoe.2021.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 03/08/2021] [Accepted: 03/11/2021] [Indexed: 11/25/2022] Open
Abstract
The design of e-cigarettes (e-cigs) is constantly evolving and the latest models can aerosolize using high-power sub-ohm resistance and hence may produce specific particle concentrations. The aim of this study was to evaluate the aerosol characteristics generated by two different types of electronic cigarette in real-world conditions, such as a sitting room or a small office, in number of particles (particles/cm3). We compared the real time and time-integrated measurements of the aerosol generated by the e-cigarette types Just Fog and JUUL. Real time (10s average) number of particles (particles/cm3) in 8 different aerodynamic sizes was measured using an optical particle counter (OPC) model Profiler 212-2. Tests were conducted with and without a Heating, Ventilating Air Conditioning System (HVACS) in operation, in order to evaluate the efficiency of air filtration. During the vaping sessions the OPC recorded quite significant increases in number of particles/cm3. The JUUL e-cig produced significantly lower emissions than Just Fog with and without the HVACS in operation. The study demonstrates the rapid volatility or change from liquid or semi-liquid to gaseous status of the e-cig aerosols, with half-life in the order of a few seconds (min. 4.6, max 23.9), even without the HVACS in operation. The e-cig aerosol generated by the JUUL proved significantly lower than that generated by the Just Fog, but this reduction may not be sufficient to eliminate or consistently reduce the health risk for vulnerable non e-cig users exposed to it.
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Affiliation(s)
- A Borgini
- Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - C Veronese
- Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.
| | - C De Marco
- Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - R Boffi
- Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - A Tittarelli
- Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - M Bertoldi
- Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - E Fern Ndez
- Tobacco Control Unit, Bellvitge Biomedical Research Institute (IDIBELL), L...Hospitalet de Llobregat, Barcelona, Spain; Tobacco Control Unit, Department of Cancer Epidemiology and Prevention, Catalan Institute of Oncology (ICO), L...Hospitalet de Llobregat, Barcelona, Spain; Department of Clinical Sciences, School of Medicine and Health Sciences, Campus of Bellvitge, University of Barcelona, Spain; Consortium for Biomedical Research in Respirarory Diseases (CIBER en Enfermedades Respiratorias, CIBERES), Spain
| | - O Tigova
- Tobacco Control Unit, Bellvitge Biomedical Research Institute (IDIBELL), L...Hospitalet de Llobregat, Barcelona, Spain; Tobacco Control Unit, Department of Cancer Epidemiology and Prevention, Catalan Institute of Oncology (ICO), L...Hospitalet de Llobregat, Barcelona, Spain; Department of Clinical Sciences, School of Medicine and Health Sciences, Campus of Bellvitge, University of Barcelona, Spain; Consortium for Biomedical Research in Respirarory Diseases (CIBER en Enfermedades Respiratorias, CIBERES), Spain
| | - S Gallus
- Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - A Lugo
- Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - G Gorini
- Oncologic network, prevention and research institute (ISPRO), Florence, Italy
| | - G Carreras
- Oncologic network, prevention and research institute (ISPRO), Florence, Italy
| | - M J L Pez
- Public Health Agency of Barcelona (ASPB), Barcelona, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain; Sant Pau Institute of Biomedical Research (IIB Sant Pau), Barcelona, Spain
| | - X Continente
- Public Health Agency of Barcelona (ASPB), Barcelona, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain; Sant Pau Institute of Biomedical Research (IIB Sant Pau), Barcelona, Spain
| | - S Semple
- Faculty of Health Sciences and Sport, University of Stirling, Stirling, Scotland, United Kingdom
| | - R Dobson
- Faculty of Health Sciences and Sport, University of Stirling, Stirling, Scotland, United Kingdom
| | - L Clancy
- Tobacco Free Research Institute Ireland (TFRI), Ireland
| | - S Keogan
- Tobacco Free Research Institute Ireland (TFRI), Ireland
| | - A Tzortzi
- Hellenic Cancer Society ... George D. Behrakis Research Lab (HCS), Greece
| | - C Vardavas
- Hellenic Cancer Society ... George D. Behrakis Research Lab (HCS), Greece
| | | | - P Starchenko
- European Network on Smoking and Tobacco Prevention (ENSP), Belgium
| | - J B Soriano
- Fundaci..n para la Investigaci..n Biom..dica del Hospital Universitario La Princesa (IISP), Spain
| | - A A Ruprecht
- Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
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3
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De Marco C, Ruprecht AA, Borgini A, Contiero P, Di Paco A, Veronese C, Paredi P, Tittarelli A, Boffi R. Will smoking on beaches become a thing of the past? Bibione: The first smoke-free beach in Italy. Pulmonology 2023; 29:540-542. [PMID: 37455241 DOI: 10.1016/j.pulmoe.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 06/06/2023] [Accepted: 06/09/2023] [Indexed: 07/18/2023] Open
Affiliation(s)
- C De Marco
- Diagnostics and Molecular Research Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy
| | - A A Ruprecht
- International Society of Doctors for Environment (ISDE), 52100 Arezzo, Italy
| | - A Borgini
- International Society of Doctors for Environment (ISDE), 52100 Arezzo, Italy; Environmental Epidemiology Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy.
| | - P Contiero
- Environmental Epidemiology Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy
| | - A Di Paco
- Respiratory Pathophysiology, Casa di Cura San Rossore, 56122 Pisa, Italy
| | - C Veronese
- Respiratory Diseases Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy
| | - P Paredi
- Airway Disease Section, National Heart and Lung Institute, Imperial College, London, UK
| | - A Tittarelli
- Cancer Registry Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy
| | - R Boffi
- Respiratory Diseases Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy
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4
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Pérez-Baños A, Gleisner MA, Flores I, Pereda C, Navarrete M, Araya JP, Navarro G, Quezada-Monrás C, Tittarelli A, Salazar-Onfray F. Whole tumour cell-based vaccines: tuning the instruments to orchestrate an optimal antitumour immune response. Br J Cancer 2023; 129:572-585. [PMID: 37355722 PMCID: PMC10421921 DOI: 10.1038/s41416-023-02327-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/31/2023] [Accepted: 06/14/2023] [Indexed: 06/26/2023] Open
Abstract
Immunotherapy, particularly those based on immune checkpoint inhibitors (ICIs), has become a useful approach for many neoplastic diseases. Despite the improvements of ICIs in supporting tumour regression and prolonging survival, many patients do not respond or develop resistance to treatment. Thus, therapies that enhance antitumour immunity, such as anticancer vaccines, constitute a feasible and promising therapeutic strategy. Whole tumour cell (WTC) vaccines have been extensively tested in clinical studies as intact or genetically modified cells or tumour lysates, injected directly or loaded on DCs with distinct adjuvants. The essential requirements of WTC vaccines include the optimal delivery of a broad battery of tumour-associated antigens, the presence of tumour cell-derived molecular danger signals, and adequate adjuvants. These factors trigger an early and robust local innate inflammatory response that orchestrates an antigen-specific and proinflammatory adaptive antitumour response capable of controlling tumour growth by several mechanisms. In this review, the strengths and weaknesses of our own and others' experiences in studying WTC vaccines are revised to discuss the essential elements required to increase anticancer vaccine effectiveness.
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Affiliation(s)
- Amarilis Pérez-Baños
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - María Alejandra Gleisner
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Iván Flores
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Cristián Pereda
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Mariela Navarrete
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Juan Pablo Araya
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Giovanna Navarro
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, 5110566, Chile
| | - Claudia Quezada-Monrás
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, 5110566, Chile
| | - Andrés Tittarelli
- Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación (PIDi), Universidad Tecnológica Metropolitana (UTEM), Santiago, Chile.
| | - Flavio Salazar-Onfray
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile.
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institute and Section for Infectious Diseases, Karolinska University Hospital, 17176, Stockholm, Sweden.
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5
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Tittarelli A, Barría O, Sanders E, Bergqvist A, Brange DU, Vidal M, Gleisner MA, Vergara JR, Niechi I, Flores I, Pereda C, Carrasco C, Quezada-Monrás C, Salazar-Onfray F. Co-Expression of Immunohistochemical Markers MRP2, CXCR4, and PD-L1 in Gallbladder Tumors Is Associated with Prolonged Patient Survival. Cancers (Basel) 2023; 15:3440. [PMID: 37444550 DOI: 10.3390/cancers15133440] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 06/10/2023] [Accepted: 06/23/2023] [Indexed: 07/15/2023] Open
Abstract
Gallbladder cancer (GBC) is a rare pathology in Western countries. However, it constitutes a relevant health problem in Asia and Latin America, with a high mortality in middle-aged Chilean women. The limited therapeutic options for GBC require the identification of targetable proteins with prognostic value for improving clinical management support. We evaluated the expression of targetable proteins, including three epithelial tumor markers, four proteins associated with multidrug and apoptosis resistance, and eleven immunological markers in 241 primary gallbladder adenocarcinomas. We investigated correlations between tumor marker expression, the primary tumor staging, and GBC patients' survival using automated immunohistochemistry, a semi-automatic method for image analysis, univariate and multivariate statistical analyses, and machine learning algorithms. Our data show a significant association between the expression of MRP2 (p = 0.0028), CXCR4 (p = 0.0423), and PD-L1 (p = 0.0264), and a better prognosis for patients with late-stage primary tumors. The expression of the MRP2/CXCR4/PD-L1 cluster of markers discriminates among short-, medium-, and long-term patient survival, with an ROC of significant prognostic value (AUC = 0.85, p = 0.0012). Moreover, a high MRP2/CXCR4/PD-L1 co-expression is associated with increased survival time (30 vs. 6 months, p = 0.0025) in GBC patients, regardless of tumor stage. Hence, our results suggest that the MRP2/CXCR4/PD-L1 cluster could potentially be a prognostic marker for GBC.
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Affiliation(s)
- Andrés Tittarelli
- Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación, Universidad Tecnológica Metropolitana, Santiago 8940577, Chile
| | - Omar Barría
- Millennium Institute on Immunology and Immunotherapy, Santiago 8380453, Chile
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
| | - Evy Sanders
- Millennium Institute on Immunology and Immunotherapy, Santiago 8380453, Chile
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
| | - Anna Bergqvist
- Millennium Institute on Immunology and Immunotherapy, Santiago 8380453, Chile
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
| | - Daniel Uribe Brange
- Laboratorio de Biología Tumoral, Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Valdivia 5090000, Chile
| | - Mabel Vidal
- Molecular and Traslational Immunology Laboratory, Department of Clinical Biochemistry and Immunology, Pharmacy Faculty, Universidad de Concepción, Concepción 4070386, Chile
- Computer Science Department, Universidad de Concepción, Concepción 4070386, Chile
| | - María Alejandra Gleisner
- Millennium Institute on Immunology and Immunotherapy, Santiago 8380453, Chile
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
| | - Jorge Ramón Vergara
- Departamento de Informática y Computación, Universidad Tecnológica Metropolitana, Santiago 7800002, Chile
| | - Ignacio Niechi
- Laboratorio de Biología Tumoral, Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Valdivia 5090000, Chile
| | - Iván Flores
- Millennium Institute on Immunology and Immunotherapy, Santiago 8380453, Chile
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
| | - Cristián Pereda
- Millennium Institute on Immunology and Immunotherapy, Santiago 8380453, Chile
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
| | - Cristian Carrasco
- Subdepartamento de Anatomía Patológica, Hospital Base de Valdivia, Valdivia 5090000, Chile
| | - Claudia Quezada-Monrás
- Millennium Institute on Immunology and Immunotherapy, Santiago 8380453, Chile
- Laboratorio de Biología Tumoral, Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Valdivia 5090000, Chile
| | - Flavio Salazar-Onfray
- Millennium Institute on Immunology and Immunotherapy, Santiago 8380453, Chile
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
- Department of Medicine Solna, Karolinska Institute, 17176 Stockholm, Sweden
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6
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Messai Y, Noman MZ, Hasmim M, Janji B, Tittarelli A, Boutet M, Baud V, Viry E, Billot K, Nanbakhsh A, Ben Safta T, Richon C, Ferlicot S, Donnadieu E, Couve S, Gardie B, Orlanducci F, Albiges L, Thiery J, Olive D, Escudier B, Chouaib S. Editor's Note: ITPR1 Protects Renal Cancer Cells against Natural Killer Cells by Inducing Autophagy. Cancer Res 2022; 82:1671. [DOI: 10.1158/0008-5472.can-22-0500] [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: 11/16/2022]
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7
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Tittarelli A. Connexin channels modulation in pathophysiology and treatment of immune and inflammatory disorders. Biochim Biophys Acta Mol Basis Dis 2021; 1867:166258. [PMID: 34450245 DOI: 10.1016/j.bbadis.2021.166258] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/28/2021] [Accepted: 08/19/2021] [Indexed: 12/16/2022]
Abstract
Connexin-mediated intercellular communication mechanisms include bidirectional cell-to-cell coupling by gap junctions and release/influx of molecules by hemichannels. These intercellular communications have relevant roles in numerous immune system activities. Here, we review the current knowledge about the function of connexin channels, mainly those formed by connexin-43, on immunity and inflammation. Focusing on those evidence that support the design and development of therapeutic tools to modulate connexin expression and/or channel activities with treatment potential for infections, wounds, cancer, and other inflammatory conditions.
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Affiliation(s)
- Andrés Tittarelli
- Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación, Universidad Tecnológica Metropolitana, Santiago 8940577, Chile.
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8
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Gleisner MA, Pereda C, Tittarelli A, Navarrete M, Fuentes C, Ávalos I, Tempio F, Araya JP, Becker MI, González FE, López MN, Salazar-Onfray F. A heat-shocked melanoma cell lysate vaccine enhances tumor infiltration by prototypic effector T cells inhibiting tumor growth. J Immunother Cancer 2021; 8:jitc-2020-000999. [PMID: 32690772 PMCID: PMC7373330 DOI: 10.1136/jitc-2020-000999] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [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] [Accepted: 06/22/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Immune checkpoint blocker (ICB) therapy has shown survival benefits for some patients with cancer. Nevertheless, many individuals remain refractory or acquire resistance to treatment, motivating the exploration of complementary immunotherapies. Accordingly, cancer vaccines offer an attractive alternative. Optimal delivery of multiple tumor-associated antigens combined with potent adjuvants seems to be crucial for vaccine effectiveness. METHODS Here, a prototype for a generic melanoma vaccine, named TRIMELVax, was tested using B16F10 mouse melanoma model. This vaccine is made of heat shock-treated tumor cell lysates combined with the Concholepas concholepas hemocyanin as adjuvant. RESULTS While B16F10 lysate provides appropriate melanoma-associated antigens, both a generic human melanoma cell lysate and hemocyanin adjuvant contributes with danger signals promoting conventional dendritic type 1 cells (cDC1), activation, phagocytosis and effective antigen cross-presentation. TRIMELVax inhibited tumor growth and increased mice survival, inducing cellular and humoral immune responses. Furthermore, this vaccine generated an increased frequency of intratumor cDC1s but not conventional type 2 dendritic cells (cDC2s). Augmented infiltration of CD3+, CD4+ and CD8+ T cells was also observed, compared with anti-programmed cell death protein 1 (PD-1) monotherapy, while TRIMELVax/anti-PD-1 combination generated higher tumor infiltration of CD4+ T cells. Moreover, TRIMELVax promoted an augmented proportion of PD-1lo CD8+ T cells in tumors, a phenotype associated with prototypic effector cells required for tumor growth control, preventing dysfunctional T-cell accumulation. CONCLUSIONS The therapeutic vaccine TRIMELVax efficiently controls the weakly immunogenic and aggressive B16F10 melanoma tumor growth, prolonging tumor-bearing mice survival even in the absence of ICB. The strong immunogenicity shown by TRIMELVax encourages clinical studies in patients with melanoma.
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Affiliation(s)
- María Alejandra Gleisner
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Cristián Pereda
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Andrés Tittarelli
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación, Universidad Tecnológica Metropolitana, Santiago, Chile
| | - Mariela Navarrete
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Camila Fuentes
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Ignacio Ávalos
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Fabian Tempio
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Juan Pablo Araya
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - María Inés Becker
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Avenida Eduardo Castillo Velasco 2902, Santiago, Chile.,Biosonda Corporation, Avenida Eduardo Castillo Velasco 2902, Santiago, Chile
| | - Fermín Eduardo González
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Laboratory of Experimental Immunology & Cancer, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Mercedes Natalia López
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile .,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Flavio Salazar-Onfray
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile .,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
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9
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Orellana VP, Tittarelli A, Retamal MA. Connexins in melanoma: Potential role of Cx46 in its aggressiveness. Pigment Cell Melanoma Res 2021; 34:853-868. [PMID: 33140904 DOI: 10.1111/pcmr.12945] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 09/07/2020] [Revised: 10/20/2020] [Accepted: 10/27/2020] [Indexed: 12/19/2022]
Abstract
Melanoma is the most aggressive skin cancer, and in metastatic advanced states, it is completely refractory to chemotherapy. Therefore, it is relevant to understand the molecular bases that rule their aggressiveness. Connexins (Cxs) are proteins that under normal physiological conditions participate in intercellular communication, via the exchange of signaling molecules between the cytoplasm and extracellular milieu and the exchange of ions/second messengers between the cytoplasm of contacting cells. These proteins have shown important roles in cancer progression, chemo- and radiotherapy resistance, and metastasis. Accordingly, Cx26 and Cx43 seem to play important roles in melanoma progression and metastasis. On the other hand, Cx46 is typically expressed in the eye lens, where it seems to be associated with oxidative stress protection in fiber lens cells. However, in the last decade, Cx46 expression has been associated with breast and brain cancers, due to its role in potentiation of both extracellular vesicle release and cancer stem cell-like properties. In this review, we analyzed a potential role of Cx46 as a new biomarker and therapeutic target in melanoma.
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Affiliation(s)
- Viviana P Orellana
- Universidad del Desarrollo. Centro de Fisiología Celular e Integrativa, Clinica Alemana Facultad de Medicina, Santiago, Chile
- Universidad del Desarrollo. Programa de Comunicación Celular en Cáncer, Clínica Alemana Facultad de Medicina, Santiago, Chile
| | - Andrés Tittarelli
- Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación (PIDi), Universidad Tecnológica Metropolitana (UTEM), Santiago, Chile
| | - Mauricio A Retamal
- Universidad del Desarrollo. Centro de Fisiología Celular e Integrativa, Clinica Alemana Facultad de Medicina, Santiago, Chile
- Universidad del Desarrollo. Programa de Comunicación Celular en Cáncer, Clínica Alemana Facultad de Medicina, Santiago, Chile
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10
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Carrasco C, Tittarelli A, Paillaleve N, Pozo MD, Rojas-Sepúlveda D, Barría O, Fluxá P, Hott M, Martin C, Quezada C, Salazar-Onfray F. The Evaluation of 17 Gastrointestinal Tumor Markers Reveals Prognosis Value for MUC6, CK17, and CD10 in Gallbladder-Cancer Patients. Diagnostics (Basel) 2021; 11:diagnostics11020153. [PMID: 33494186 PMCID: PMC7909765 DOI: 10.3390/diagnostics11020153] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 12/04/2020] [Revised: 01/14/2021] [Accepted: 01/19/2021] [Indexed: 12/28/2022] Open
Abstract
Gallbladder cancer (GBC) is an aggressive and highly lethal disease with relatively low global incidence, but one that constitutes a major health problem in Asian and Latin American countries, particularly in Chile. The identification of new tumor-associated markers with potential prognosis value is required for GBC clinical practice. Using immunohistochemistry/tumor tissue microarray, we evaluated the expression of 17 gastrointestinal tumor-associated protein markers (CK7, CK17, CK19, CK20, CKLMW, CKHMW, MUC1, MUC2, MUC5AC, MUC6, CA125, CD10, CEA, vimentin, villin, claudin-4, and CDX2) in primary gallbladder adenocarcinomas from 180 Chilean patients and analyzed potential associations with their pathological and clinical characteristics. Younger female patients with well- to moderately differentiated tumors had a better prognosis than that of older female or male patients with tumors with a similar tumor differentiation grade. Among all analyzed markers, MUC6 expression was associated with better prognosis in patients with well- to moderately differentiated tumors, whereas CK17 or CD10 was associated with worse prognosis in patients with poorly differentiated tumors. In addition, the MUC6+CK17– expression pattern was strongly associated with better prognosis in patients with well- to moderately differentiated tumors, whereas patients with poorly differentiated tumors and with the CK17+CD10+ expression pattern showed worse prognosis. Our results suggest that tumor MUC6, CK17, and CD10 can be considered as potential prognosis markers for GBC.
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Affiliation(s)
- Cristian Carrasco
- Subdepartamento de Anatomía Patológica, Hospital Base de Valdivia, Valdivia 5090000, Chile; (N.P.); (M.D.P.)
- Correspondence: (C.C.); (F.S.-O.); Tel.: +56-63-2263301 (C.C.); +56-2-29786345 (F.S.-O.)
| | - Andrés Tittarelli
- Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación, Universidad Tecnológica Metropolitana, Santiago 8940577, Chile;
| | - Natalia Paillaleve
- Subdepartamento de Anatomía Patológica, Hospital Base de Valdivia, Valdivia 5090000, Chile; (N.P.); (M.D.P.)
| | - Maeva Del Pozo
- Subdepartamento de Anatomía Patológica, Hospital Base de Valdivia, Valdivia 5090000, Chile; (N.P.); (M.D.P.)
| | - Daniel Rojas-Sepúlveda
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile; (D.R.-S.); (O.B.); (C.Q.)
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
| | - Omar Barría
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile; (D.R.-S.); (O.B.); (C.Q.)
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
| | - Paula Fluxá
- Departamento de Cirugía Oriente, Facultad de Medicina, Universidad de Chile, Santiago 7500922, Chile;
| | - Melissa Hott
- Subdepartamento de Enfermedades Virales, Instituto de Salud Pública, Santiago 7780050, Chile;
| | - Carolina Martin
- Escuela de Tecnología Médica, Universidad Austral de Chile, Puerto Montt 5500000, Chile;
| | - Claudia Quezada
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile; (D.R.-S.); (O.B.); (C.Q.)
- Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Valdivia 5090000, Chile
| | - Flavio Salazar-Onfray
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile; (D.R.-S.); (O.B.); (C.Q.)
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
- Correspondence: (C.C.); (F.S.-O.); Tel.: +56-63-2263301 (C.C.); +56-2-29786345 (F.S.-O.)
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11
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Tittarelli A, Navarrete M, Lizana M, Hofmann-Vega F, Salazar-Onfray F. Hypoxic Melanoma Cells Deliver microRNAs to Dendritic Cells and Cytotoxic T Lymphocytes through Connexin-43 Channels. Int J Mol Sci 2020; 21:ijms21207567. [PMID: 33066331 PMCID: PMC7589225 DOI: 10.3390/ijms21207567] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 09/16/2020] [Revised: 10/05/2020] [Accepted: 10/09/2020] [Indexed: 12/13/2022] Open
Abstract
Alterations in microRNA (miRNA) profiles, induced by tumor microenvironment stressors, like hypoxia, allow cancer cells to acquire immune-resistance phenotypes. Indeed, hypoxia-induced miRNAs have been implicated in cancer progression through numerous cancer cell non-autonomous mechanisms, including the direct transfer of hypoxia-responsive miRNA from cancer to immune cells via extracellular vesicles. Connexin-43 (Cx43)-constituted gap junctions (GJs) have also been involved in miRNA intercellular mobilization, in other biological processes. In this report, we aimed to evaluate the involvement of Cx43-GJs in the shift of miRNAs induced by hypoxia, from hypoxic melanoma cells to dendritic cells and melanoma-specific cytotoxic T lymphocytes (CTLs). Using qRT-PCR arrays, we identified that miR-192-5p was strongly induced in hypoxic melanoma cells. Immune cells acquired this miRNA after co-culture with hypoxic melanoma cells. The transfer of miR-192-5p was inhibited when hypoxic melanoma cells expressed a dominant negative Cx43 mutant or when Cx43 expression was silenced using specific short-hairpin RNAs. Interestingly, miR-192-5p levels on CTLs after co-culture with hypoxic melanoma cells were inversely correlated with the cytotoxic activity of T cells and with ZEB2 mRNA expression, a validated immune-related target of miR-192-5p, which is also observed in vivo. Altogether, our data suggest that hypoxic melanoma cells may suppress CTLs cytotoxic activity by transferring hypoxia-induced miR-192-5p through a Cx43-GJs driven mechanism, constituting a resistance strategy for immunological tumor escape.
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Affiliation(s)
- Andrés Tittarelli
- Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación (PIDi), Universidad Tecnológica Metropolitana (UTEM), Santiago 8940577, Chile
- Correspondence: ; Tel.: +56-2-2787-7903
| | - Mariela Navarrete
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile; (M.N.); (M.L.); (F.H.-V.); (F.S.-O.)
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
| | - Marcelo Lizana
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile; (M.N.); (M.L.); (F.H.-V.); (F.S.-O.)
| | - Francisca Hofmann-Vega
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile; (M.N.); (M.L.); (F.H.-V.); (F.S.-O.)
| | - Flavio Salazar-Onfray
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile; (M.N.); (M.L.); (F.H.-V.); (F.S.-O.)
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
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12
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Hofmann F, Navarrete M, Álvarez J, Guerrero I, Gleisner MA, Tittarelli A, Salazar-Onfray F. Cx43-Gap Junctions Accumulate at the Cytotoxic Immunological Synapse Enabling Cytotoxic T Lymphocyte Melanoma Cell Killing. Int J Mol Sci 2019; 20:ijms20184509. [PMID: 31547237 PMCID: PMC6769613 DOI: 10.3390/ijms20184509] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [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: 08/13/2019] [Revised: 09/03/2019] [Accepted: 09/06/2019] [Indexed: 12/17/2022] Open
Abstract
Upon tumor antigen recognition, cytotoxic T lymphocytes (CTLs) and target cells form specialized supramolecular structures, called cytotoxic immunological synapses, which are required for polarized delivery of cytotoxic granules. In previous reports, we described the accumulation of connexin 43 (Cx43)-formed gap junctions (GJs) at natural killer (NK) cell–tumor cell cytotoxic immunological synapse. In this report, we demonstrate the functional role of Cx43-GJs at the cytotoxic immunological synapse established between CTLs and melanoma cells during cytotoxicity. Using confocal microscopy, we evaluated Cx43 polarization to the contact site between CTLs isolated from pMEL-1 mice and B16F10 melanoma cells. We knocked down Cx43 expression in B16F10 cells and evaluated its role in the formation of functional GJs and the cytotoxic activity of CTLs, by calcein transfer and granzyme B activity assays, respectively. We found that Cx43 localizes at CTL/B16F10 intercellular contact sites via an antigen-dependent process. We also found that pMEL-1 CTLs but not wild-type naïve CD8+ T cells established functional GJs with B16F10 cells. Interestingly, we observed that Cx43-GJs were required for an efficient granzyme B activity in target B16F10 cells. Using an HLA-A2-restricted/MART-1-specific CD8+ T-cell clone, we confirmed these observations in human cells. Our results suggest that Cx43-channels are relevant components of cytotoxic immunological synapses and potentiate CTL-mediated tumor cell killing.
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Affiliation(s)
- Francisca Hofmann
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile.
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile.
| | - Mariela Navarrete
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile.
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile.
| | - Javiera Álvarez
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile.
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile.
| | - Israel Guerrero
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile.
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile.
| | - María Alejandra Gleisner
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile.
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile.
| | - Andrés Tittarelli
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile.
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile.
| | - Flavio Salazar-Onfray
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile.
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile.
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13
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Falcón-Beas C, Tittarelli A, Mora-Bau G, Tempio F, Pérez C, Hevia D, Behrens C, Flores I, Falcón-Beas F, Garrido P, Ascui G, Pereda C, González FE, Salazar-Onfray F, López MN. Dexamethasone turns tumor antigen-presenting cells into tolerogenic dendritic cells with T cell inhibitory functions. Immunobiology 2019; 224:697-705. [PMID: 31221438 DOI: 10.1016/j.imbio.2019.05.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 05/05/2019] [Accepted: 05/30/2019] [Indexed: 02/08/2023]
Abstract
BACKGROUND Dendritic cells (DCs) are usually immunogenic, but they are also capable of inducing tolerance under anti-inflammatory conditions. Immunotherapy based on autologous DCs loaded with an allogeneic melanoma cell lysate (TRIMEL/DCs) induces immunological responses and increases melanoma patient survival. Glucocorticoids can suppress DC maturation and function, leading to a DC-mediated inhibition of T cell responses. METHODS The effect of dexamethasone, a glucocorticoid extensively used in cancer therapies, on TRIMEL/DCs phenotype and immunogenicity was examined. RESULTS Dexamethasone induced a semi-mature phenotype on TRIMEL/DC with low maturation surface marker expressions, decreased pro-inflammatory cytokine induction (IL-1β and IL-12) and increased release of regulatory cytokines (IL-10 and TGF-β). Dexamethasone-treated TRIMEL/DCs inhibited allogeneic CD4+ T cell proliferation and cytokine release (IFNγ, TNF-α and IL-17). Co-culturing melanoma-specific memory tumor-infiltrating lymphocytes with dexamethasone-treated TRIMEL/DC inhibited proliferation and effector T cell activities, including cytokine secretion and anti-melanoma cytotoxicity. CONCLUSIONS These findings suggest that dexamethasone repressed melanoma cell lysate-mediated DC maturation, generating a potent tolerogenic-like DC phenotype that inhibited melanoma-specific effector T cell activities. These results suggest that dexamethasone-induced immunosuppression may interfere with the clinical efficacy of DC-based melanoma vaccines, and must be taken into account for optimal design of cellular therapy against cancer.
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Affiliation(s)
- Cristián Falcón-Beas
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile
| | - Andrés Tittarelli
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile
| | - Gabriela Mora-Bau
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile
| | - Fabián Tempio
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile
| | - Claudio Pérez
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Cell Therapy Laboratory, Blood Bank Service, University of Chile Clinical Hospital, 8380453 Santiago, Chile
| | - Daniel Hevia
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile
| | - Carolina Behrens
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile
| | - Iván Flores
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile
| | - Felipe Falcón-Beas
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile
| | - Paola Garrido
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile
| | - Gabriel Ascui
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile
| | - Cristián Pereda
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile
| | - Fermín E González
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Laboratory of Experimental Immunology & Cancer, Department of Conservative Dentistry, Faculty of Dentistry, University of Chile, 8380492 Santiago, Chile
| | - Flavio Salazar-Onfray
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile
| | - Mercedes N López
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile; Cell Therapy Laboratory, Blood Bank Service, University of Chile Clinical Hospital, 8380453 Santiago, Chile.
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14
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Bianchi N, Crosignani P, Rovelli A, Tittarelli A, Carnelli CA, Rossitto F, Vanelli U, Porro E, Berrino F. Overhead Electricity Power Lines and Childhood Leukemia: A Registry-Based, Case-Control Study. Tumori 2018; 86:195-8. [PMID: 10939597 DOI: 10.1177/030089160008600303] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [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: 11/15/2022]
Abstract
AIMS AND BACKGROUND To evaluate the role of exposure to low-frequency electromagnetic fields generated by overhead power lines on the risk of childhood leukemia, we carried out a case-control study in the area (Varese province) covered by the Lombardy Cancer Registry. METHODS AND STUDY DESIGN Exposure to magnetic fields was estimated using line load data and the distance between subjects' homes and the nearest power line. A total of 101 cases and 412 controls were investigated. RESULTS Twenty subjects (9 cases and 11 controls) were considered exposed. A significant fourfold increase in risk for leukemia in exposed subjects and a dose-response relationship were found. The risk was higher than that reported by other studies. Potential biases related to the representativity of controls and validity of exposure assessment do not seem to have influenced the risk estimates. CONCLUSIONS We suggest that measures to remedy residential exposure should be taken wherever practicable.
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15
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García-Salum T, Villablanca A, Matthäus F, Tittarelli A, Baeza M, Pereda C, Gleisner MA, González FE, López MN, Hoheisel JD, Norgauer J, Gebicke-Haerter PJ, Salazar-Onfray F. Molecular signatures associated with tumor-specific immune response in melanoma patients treated with dendritic cell-based immunotherapy. Oncotarget 2018; 9:17014-17027. [PMID: 29682201 PMCID: PMC5908302 DOI: 10.18632/oncotarget.24795] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 07/28/2017] [Accepted: 02/26/2018] [Indexed: 01/18/2023] Open
Abstract
Purpose We previously showed that autologous dendritic cells (DCs) loaded with an allogeneic heat shock (HS)-conditioned melanoma cell-derived lysate, called TRIMEL, induce T-cell-mediated immune responses in stage IV melanoma patients. Importantly, a positive delayed-type hypersensitivity (DTH) reaction against TRIMEL after vaccination, correlated with patients prolonged survival. Furthermore, we observed that DTH reaction was associated with a differential response pattern reflected in the presence of distinct cell subpopulations in peripheral blood. Detected variations in patient responses encouraged molecular studies aimed to identify gene expression profiles induced after vaccination in treated patients, allowing the identification of new molecular predictive markers. Methods Gene expression patterns were analyzed by microarrays during vaccination, and some of them confirmed by quantitative real-time reverse transcriptase PCR (qRT-PCR) in the total leukocyte population of a representative group of responder and non-responder patients. New candidates for biomarkers with predictive value were identified using bioinformatics, molecular analysis, and flow cytometry. Results Seventeen genes overexpressed in responder patients after vaccination respect to non-responders were identified after a mathematical analysis, from which ten were linked to immune responses and five related to cell cycle control and signal transduction. In immunological responder patients, increased protein levels of the chemokine receptor CXCR4 and the Fc-receptor CD32 were observed on cell membranes of CD8+ T and B cells and the monocyte population, respectively, confirming gene expression results. Conclusions Our study contributes to finding new molecular markers associated with clinical outcome and better understanding of clinically relevant immunological responses induced by anti-tumor DC-vaccines.
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Affiliation(s)
- Tamara García-Salum
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile
| | - Andrea Villablanca
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile
| | - Franziska Matthäus
- Faculty of Biological Sciences and FIAS, University of Frankfurt, Ruth-Moufang-Straße 1, 60438 Frankfurt am Main, Germany
| | - Andrés Tittarelli
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile
| | - Mauricio Baeza
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, 8380492 Santiago, Chile
| | - Cristián Pereda
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile
| | - M Alejandra Gleisner
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile
| | - Fermín E González
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile.,Laboratory of Experimental Immunology and Cancer, Faculty of Dentistry, Universidad de Chile, 8380492 Santiago, Chile
| | - Mercedes N López
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile
| | - Jörg D Hoheisel
- Functional Genome Analysis, German Cancer Research Centre (DKFZ), Im Neuenheimer Feld 580, 69120 Heidelberg, Germany
| | - Johannes Norgauer
- Department of Dermatology, Jena University Hospital D-07743 Jena, Germany
| | - Peter J Gebicke-Haerter
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile.,Institute of Psychopharmacology, Central Institute of Mental Health, University of Heidelberg, J5, 68159 Mannheim, Germany
| | - Flavio Salazar-Onfray
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, 8380453 Santiago, Chile
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16
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Rojas-Sepúlveda D, Tittarelli A, Gleisner MA, Ávalos I, Pereda C, Gallegos I, González FE, López MN, Butte JM, Roa JC, Fluxá P, Salazar-Onfray F. Tumor lysate-based vaccines: on the road to immunotherapy for gallbladder cancer. Cancer Immunol Immunother 2018; 67:1897-1910. [PMID: 29600445 PMCID: PMC6244977 DOI: 10.1007/s00262-018-2157-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [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: 09/01/2017] [Accepted: 03/26/2018] [Indexed: 12/14/2022]
Abstract
Immunotherapy based on checkpoint blockers has proven survival benefits in patients with melanoma and other malignancies. Nevertheless, a significant proportion of treated patients remains refractory, suggesting that in combination with active immunizations, such as cancer vaccines, they could be helpful to improve response rates. During the last decade, we have used dendritic cell (DC) based vaccines where DCs loaded with an allogeneic heat-conditioned melanoma cell lysate were tested in a series of clinical trials. In these studies, 60% of stage IV melanoma DC-treated patients showed immunological responses correlating with improved survival. Further studies showed that an essential part of the clinical efficacy was associated with the use of conditioned lysates. Gallbladder cancer (GBC) is a high-incidence malignancy in South America. Here, we evaluated the feasibility of producing effective DCs using heat-conditioned cell lysates derived from gallbladder cancer cell lines (GBCCL). By characterizing nine different GBCCLs and several fresh tumor tissues, we found that they expressed some tumor-associated antigens such as CEA, MUC-1, CA19-9, Erb2, Survivin, and several carcinoembryonic antigens. Moreover, heat-shock treatment of GBCCLs induced calreticulin translocation and release of HMGB1 and ATP, both known to act as danger signals. Monocytes stimulated with combinations of conditioned lysates exhibited a potent increase of DC-maturation markers. Furthermore, conditioned lysate-matured DCs were capable of strongly inducing CD4+ and CD8+ T cell activation, in both allogeneic and autologous cell co-cultures. Finally, in vitro stimulated CD8+ T cells recognize HLA-matched GBCCLs. In summary, GBC cell lysate-loaded DCs may be considered for future immunotherapy approaches.
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Affiliation(s)
- Daniel Rojas-Sepúlveda
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Independencia 1027, building H, Third floor, 8380453, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, 8380453, Santiago, Chile.,Faculty of Science, Universidad San Sebastián, Lota 2465, 7510157, Santiago, Chile
| | - Andrés Tittarelli
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Independencia 1027, building H, Third floor, 8380453, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, 8380453, Santiago, Chile
| | - María Alejandra Gleisner
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Independencia 1027, building H, Third floor, 8380453, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, 8380453, Santiago, Chile
| | - Ignacio Ávalos
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Independencia 1027, building H, Third floor, 8380453, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, 8380453, Santiago, Chile
| | - Cristián Pereda
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Independencia 1027, building H, Third floor, 8380453, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, 8380453, Santiago, Chile
| | - Iván Gallegos
- Pathological Anatomy Service, Clinic Hospital, Universidad de Chile, 8380456, Santiago, Chile
| | - Fermín Eduardo González
- Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, 8380453, Santiago, Chile.,Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, 8380492, Santiago, Chile
| | - Mercedes Natalia López
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Independencia 1027, building H, Third floor, 8380453, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, 8380453, Santiago, Chile
| | - Jean Michel Butte
- Department of Surgery, Fundación Arturo López Pérez, Institute of Oncology, 7500921, Santiago, Chile
| | - Juan Carlos Roa
- Department of Pathology, School of Medicine, Pontificia Universidad Católica de Chile, 8330023, Santiago, Chile.,Center for Investigation in Translational Oncology (CITO), Advanced Center for Chronic Diseases (ACCDiS), School of Medicine, Pontificia Universidad Católica de Chile, 8330023, Santiago, Chile
| | - Paula Fluxá
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Independencia 1027, building H, Third floor, 8380453, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, 8380453, Santiago, Chile
| | - Flavio Salazar-Onfray
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Independencia 1027, building H, Third floor, 8380453, Santiago, Chile. .,Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, 8380453, Santiago, Chile.
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Fluxá P, Rojas-Sepúlveda D, Gleisner MA, Tittarelli A, Villegas P, Tapia L, Rivera MT, López MN, Catán F, Uribe M, Salazar-Onfray F. High CD8 + and absence of Foxp3 + T lymphocytes infiltration in gallbladder tumors correlate with prolonged patients survival. BMC Cancer 2018; 18:243. [PMID: 29499656 PMCID: PMC5833069 DOI: 10.1186/s12885-018-4147-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 02/19/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Gallbladder cancer (GBC), although infrequent in industrialized countries, has high incidence rates in certain world regions, being a leading cause of death among elderly Chilean women. Surgery is the only effective treatment, and a five-year survival rate of advanced-stage patients is less than 10%. Hence, exploring immunotherapy is relevant, although GBC immunogenicity is poorly understood. This study examined the relationship between the host immune response and GBC patient survival based on the presence of tumor-infiltrating lymphocytes at different disease stages. METHODS Tumor tissues from 80 GBC patients were analyzed by immunohistochemistry for the presence of CD3+, CD4+, CD8+, and Foxp3+ T cell populations, and the results were associated with clinical stage and patient survival. RESULTS The majority of tumor samples showed CD3+ T cell infiltration, which correlated with better prognosis, particularly in advanced disease stages. CD8+, but not CD4+, T cell infiltration correlated with improved survival, particularly in advanced disease stages. Interestingly, a < 1 CD4+/CD8+ T cell ratio was related with increased survival. Additionally, the presence of Foxp3+ T cells correlated with decreased patient survival, whereas a ≤ 1 Foxp3+/CD8+ T cell ratio was associated with improved patient survival. CONCLUSIONS Depending on the disease stage, the presence of CD8+ and absence of Foxp3+ T cell populations in tumor tissues correlated with improved GBC patient survival, and thus represent potential markers for prognosis and management of advanced disease, and supports testing of immunotherapy.
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Affiliation(s)
- Paula Fluxá
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, 8380453, Santiago, Chile
- Departamento de Cirugía Oriente, Faculty of Medicine, Universidad de Chile, 8380453, Santiago, Chile
| | - Daniel Rojas-Sepúlveda
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, 8380453, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, 8380453, Santiago, Chile
| | - María Alejandra Gleisner
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, 8380453, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, 8380453, Santiago, Chile
| | - Andrés Tittarelli
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, 8380453, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, 8380453, Santiago, Chile
| | - Pablo Villegas
- Unidad de Anatomía Patológica, Hospital del Salvador, 7500922, Santiago, Chile
| | - Loreto Tapia
- Unidad de Anatomía Patológica, Hospital del Salvador, 7500922, Santiago, Chile
| | - María Teresa Rivera
- Unidad de Anatomía Patológica, Hospital del Salvador, 7500922, Santiago, Chile
| | - Mercedes Natalia López
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, 8380453, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, 8380453, Santiago, Chile
| | - Felipe Catán
- Departamento de Cirugía Oriente, Faculty of Medicine, Universidad de Chile, 8380453, Santiago, Chile
| | - Mario Uribe
- Departamento de Cirugía Oriente, Faculty of Medicine, Universidad de Chile, 8380453, Santiago, Chile
| | - Flavio Salazar-Onfray
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, 8380453, Santiago, Chile.
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, 8380453, Santiago, Chile.
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Abstract
Summary
Objectives:
Record linkage, the process of bringing together separately compiled but related records from different databases, is essential in many areas of biomedical research. We developed a record linkage program (EpiLink), which employs a simple mathematical approach. We describe the program and present results obtained testing it in a linkage task.
Methods:
EpiLink was designed to be flexible with user-friendly settings to tailor linkage and operating parameters to specific linkage tasks, and employ deterministic, probabilistic or sequential deterministic-probabilistic linkage strategies as required. The user can also standardize data format, examine linkage results and accept or discard them. We used EpiLink to link a subset of cases of the Lombardy Cancer Registry (20,724 records) with the Social Security file of the population (1,021,846 records) covered by the registry. The linkage strategy was deterministic, followed by several probabilistic linkage steps.
Results:
Manual inspection of the results showed that EpiLink achieved 98.8% specificity and 96.5% sensitivity.
Conclusions:
EpiLink is a practical and accurate means of linking records from different databases that can be used by non-statisticians and is efficient in terms of human and financial resources.
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Gleisner MA, Navarrete M, Hofmann F, Salazar-Onfray F, Tittarelli A. Mind the Gaps in Tumor Immunity: Impact of Connexin-Mediated Intercellular Connections. Front Immunol 2017; 8:1067. [PMID: 28919895 PMCID: PMC5585150 DOI: 10.3389/fimmu.2017.01067] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [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: 07/11/2017] [Accepted: 08/16/2017] [Indexed: 12/22/2022] Open
Abstract
Gap junctions (GJs)-mediated intercellular communications (GJICs) are connexin (Cx)-formed plasma membrane channels that allow for the passage of small molecules between adjacent cells, and are involved in several physiopathological processes, including immune responses against cancer. In general, tumor cells are poorly coupled through GJs, mainly due to low Cx expression or reduced channel activity, suggesting that Cxs may have tumor suppressor roles. However, more recent data indicate that Cxs and/or GJICs may also in some cases promote tumor progression. This dual role of Cx channels in tumor outcome may be due, at least partially, to the fact that GJs not only interconnect cells from the same type, such as cancer cells, but also promote the intercellular communication of tumor cells with different types of cells from their microenvironment, and such diverse intercellular interactions have distinctive impact on tumor development. For example, whereas GJ-mediated interactions among tumor cells and microglia have been implicated in promotion of tumor growth, tumor cells delivery to dendritic cells of antigenic peptides through GJs have been associated with enhanced immune-mediated tumor elimination. In this review, we provide an updated overview on the role of GJICs in tumor immunity, focusing on the pro-tumor and antitumor effect of GJs occurring among tumor and immune cells. Accumulated data suggest that GJICs may act as tumor suppressors or enhancers depending on whether tumor cells interact predominantly with antitumor immune cells or with stromal cells. The complex modulation of immune-tumor cell GJICs should be taken into consideration in order to potentiate current cancer immunotherapies.
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Affiliation(s)
- María Alejandra Gleisner
- Disciplinary Program of Immunology, Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile.,Faculty of Medicine, Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, Santiago, Chile
| | - Mariela Navarrete
- Disciplinary Program of Immunology, Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile.,Faculty of Medicine, Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, Santiago, Chile
| | - Francisca Hofmann
- Disciplinary Program of Immunology, Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile.,Faculty of Medicine, Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, Santiago, Chile
| | - Flavio Salazar-Onfray
- Disciplinary Program of Immunology, Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile.,Faculty of Medicine, Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, Santiago, Chile
| | - Andrés Tittarelli
- Disciplinary Program of Immunology, Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile.,Faculty of Medicine, Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, Santiago, Chile
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Tittarelli A, Guerrero I, Tempio F, Gleisner MA, Avalos I, Sabanegh S, Ortíz C, Michea L, López MN, Mendoza-Naranjo A, Salazar-Onfray F. Overexpression of connexin 43 reduces melanoma proliferative and metastatic capacity. Br J Cancer 2016; 115:e14. [PMID: 27657340 PMCID: PMC5117789 DOI: 10.1038/bjc.2016.296] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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Tittarelli A, Janji B, Van Moer K, Noman MZ, Chouaib S. The Selective Degradation of Synaptic Connexin 43 Protein by Hypoxia-induced Autophagy Impairs Natural Killer Cell-mediated Tumor Cell Killing. J Biol Chem 2015. [PMID: 26221040 DOI: 10.1074/jbc.m115.651547] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Although natural killer (NK) cells play an important role in the control of melanoma, hypoxic stress in the tumor microenvironment may impair NK-mediated tumor cell killing by mechanisms that are not fully understood. In this study, we investigated the effect of hypoxia on the expression and channel activity of connexin 43 (Cx43) in melanoma cells and its impact on their susceptibility to NK cell-mediated lysis. Our results demonstrated that hypoxic stress increases Cx43 expression in melanoma cells via hypoxia-inducible factor-1α (HIF-1α) transcriptional activity. Hypoxic cells displaying increased Cx43 expression were less susceptible to NK cell-mediated lysis compared with normoxic cells expressing a moderate level of Cx43. Conversely, when overexpressed in normoxic tumor cells, Cx43 improves their susceptibility to N cell-mediated killing. We show that the NK cell immune synapse formed with normoxic melanoma cells is more stable and contains a high level of gap-junctional Cx43 whereas that formed with hypoxic cells is less stable and contains a significant lower level of gap-junctional Cx43. We provide evidence that the activation of autophagy in hypoxic melanoma cells selectively degrades gap-junctional Cx43, leading to the destabilization of the immune synapse and the impairment of NK cell-mediated killing. Inhibition of autophagy by genetic or pharmacological approaches as well as expression of the non-degradable form of Cx43 significantly restore its accumulation at the immune synapse and improves N cell-mediated lysis of hypoxic melanoma cells. This study provides the first evidence that the hypoxic microenvironment negatively affects the immune surveillance of tumors by NK cells through the modulation of Cx43-mediated intercellular communications.
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Affiliation(s)
- Andrés Tittarelli
- From the INSERM U753, Gustave Roussy Cancer Campus, 114 rue Edouard Vaillant, 94805 Villejuif, France and
| | - Bassam Janji
- the Laboratory of Experimental Cancer Research, Department of Oncology, Luxembourg Institute of Health, 1526 Luxembourg City, Luxembourg
| | - Kris Van Moer
- the Laboratory of Experimental Cancer Research, Department of Oncology, Luxembourg Institute of Health, 1526 Luxembourg City, Luxembourg
| | - Muhammad Zaeem Noman
- From the INSERM U753, Gustave Roussy Cancer Campus, 114 rue Edouard Vaillant, 94805 Villejuif, France and
| | - Salem Chouaib
- From the INSERM U753, Gustave Roussy Cancer Campus, 114 rue Edouard Vaillant, 94805 Villejuif, France and
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Tittarelli A, Guerrero I, Tempio F, Gleisner MA, Avalos I, Sabanegh S, Ortíz C, Michea L, López MN, Mendoza-Naranjo A, Salazar-Onfray F. Overexpression of connexin 43 reduces melanoma proliferative and metastatic capacity. Br J Cancer 2015; 113:259-67. [PMID: 26135897 PMCID: PMC4506378 DOI: 10.1038/bjc.2015.162] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [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: 02/06/2015] [Revised: 03/18/2015] [Accepted: 04/21/2015] [Indexed: 01/14/2023] Open
Abstract
Background: Alterations in connexin 43 (Cx43) expression and/or gap junction (GJ)-mediated intercellular communication are implicated in cancer pathogenesis. Herein, we have investigated the role of Cx43 in melanoma cell proliferation and apoptosis sensitivity in vitro, as well as metastatic capability and tumour growth in vivo. Methods: Connexin 43 expression levels, GJ coupling and proliferation rates were analysed in four different human melanoma cell lines. Furthermore, tumour growth and lung metastasis of high compared with low Cx43-expressing FMS cells were evaluated in vivo using a melanoma xenograft model. Results: Specific inhibition of Cx43 channel activity accelerated melanoma cell proliferation, whereas overexpression of Cx43 increased GJ coupling and reduced cell growth. Moreover, Cx43 overexpression in FMS cells increased basal and tumour necrosis factor-α-induced apoptosis and resulted in decreased melanoma tumour growth and lower number and size of metastatic foci in vivo. Conclusions: Our findings reveal an important role for Cx43 in intrinsically controlling melanoma growth, death and metastasis, and emphasise the potential use of compounds that selectively enhance Cx43 expression on melanoma in the future chemotherapy and/or immunotherapy protocols.
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Affiliation(s)
- A Tittarelli
- Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago 8380453, Chile
| | - I Guerrero
- Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago 8380453, Chile
| | - F Tempio
- 1] Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago 8380453, Chile [2] Millennium Institute on Immunology and Immunotherapy, Institute of Biomedical Sciences, University of Chile, Santiago 8380453, Chile
| | - M A Gleisner
- Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago 8380453, Chile
| | - I Avalos
- Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago 8380453, Chile
| | - S Sabanegh
- Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago 8380453, Chile
| | - C Ortíz
- Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago 8380453, Chile
| | - L Michea
- 1] Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago 8380453, Chile [2] Millennium Institute on Immunology and Immunotherapy, Institute of Biomedical Sciences, University of Chile, Santiago 8380453, Chile
| | - M N López
- 1] Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago 8380453, Chile [2] Millennium Institute on Immunology and Immunotherapy, Institute of Biomedical Sciences, University of Chile, Santiago 8380453, Chile [3] Research Support Office, University of Chile Clinical Hospital, Santiago 8380453, Chile
| | - A Mendoza-Naranjo
- UCL Cancer Institute, University College London, 72 Huntley Street, London WC1E 6DD, UK
| | - F Salazar-Onfray
- 1] Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago 8380453, Chile [2] Millennium Institute on Immunology and Immunotherapy, Institute of Biomedical Sciences, University of Chile, Santiago 8380453, Chile
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Messai Y, Noman MZ, Hasmim M, Janji B, Tittarelli A, Boutet M, Baud V, Viry E, Billot K, Nanbakhsh A, Ben Safta T, Richon C, Ferlicot S, Donnadieu E, Couve S, Gardie B, Orlanducci F, Albiges L, Thiery J, Olive D, Escudier B, Chouaib S. ITPR1 protects renal cancer cells against natural killer cells by inducing autophagy. Cancer Res 2014; 74:6820-32. [PMID: 25297632 DOI: 10.1158/0008-5472.can-14-0303] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Clear cell renal cell carcinomas (RCC) frequently display inactivation of von Hippel-Lindau (VHL) gene leading to increased level of hypoxia-inducible factors (HIF). In this study, we investigated the potential role of HIF2α in regulating RCC susceptibility to natural killer (NK) cell-mediated killing. We demonstrated that the RCC cell line 786-0 with mutated VHL was resistant to NK-mediated lysis as compared with the VHL-corrected cell line (WT7). This resistance was found to require HIF2α stabilization. On the basis of global gene expression profiling and chromatin immunoprecipitation assay, we found ITPR1 (inositol 1,4,5-trisphosphate receptor, type 1) as a direct novel target of HIF2α and that targeting ITPR1 significantly increased susceptibility of 786-0 cells to NK-mediated lysis. Mechanistically, HIF2α in 786-0 cells lead to overexpression of ITPR1, which subsequently regulated the NK-mediated killing through the activation of autophagy in target cells by NK-derived signal. Interestingly, both ITPR1 and Beclin-1 silencing in 786-0 cells inhibited NK-induced autophagy and subsequently increased granzyme B activity in target cells. Finally, in vivo ITPR1 targeting significantly enhanced the NK-mediated tumor regression. Our data provide insight into the link between HIF2α, the ITPR1-related pathway, and natural immunity and strongly suggest a role for the HIF2α/ITPR1 axis in regulating RCC cell survival.
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Affiliation(s)
| | | | | | - Bassam Janji
- Laboratory of Experimental Hemato-Oncology, Department of Oncology, Public Research Center for Health (CRP-Santé), L-1526 Luxembourg City, Luxembourg
| | | | | | - Véronique Baud
- INSERM, U1016, Paris, France. CNRS, UMR8104, Paris, France. Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Elodie Viry
- Laboratory of Experimental Hemato-Oncology, Department of Oncology, Public Research Center for Health (CRP-Santé), L-1526 Luxembourg City, Luxembourg
| | - Katy Billot
- INSERM, U1016, Paris, France. CNRS, UMR8104, Paris, France. Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | | | | | - Catherine Richon
- Functional Genomic Unit Gustave Roussy Cancer Institute, Villejuif, France
| | - Sophie Ferlicot
- Université Paris-Sud, Assistance Publique-Hôpitaux de Paris, Service d'Anatomo-Pathologie, Hôpital Bicêtre, Le Kremlin-Bicêtre France
| | - Emmanuel Donnadieu
- Institut Cochin, Université Paris Descartes, CNRS (UMR 8104), Paris, France
| | | | | | | | | | | | - Daniel Olive
- INSERM, U1068, CRCM, Immunity and Cancer, Marseille, France
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Tittarelli A, Mendoza-Naranjo A, Farías M, Guerrero I, Ihara F, Wennerberg E, Riquelme S, Gleisner A, Kalergis A, Lundqvist A, López MN, Chambers BJ, Salazar-Onfray F. Gap junction intercellular communications regulate NK cell activation and modulate NK cytotoxic capacity. J Immunol 2013; 192:1313-9. [PMID: 24376266 DOI: 10.4049/jimmunol.1301297] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Gap junctions (GJs) mediate intercellular communication between adjacent cells. Previously, we showed that connexin 43 (Cx43), the main GJ protein in the immune system, mediates Ag transfer between human dendritic cells (DCs) and is recruited to the immunological synapse during T cell priming. This crosstalk contributed to T cell activation, intracellular Ca(2+) responses, and cytokine release. However, the role of GJs in NK cell activation by DCs and NK cell-mediated cytotoxicity against tumor cells remains unknown. In this study, we found polarization of Cx43 at the NK/DC and NK/tumor cell-contact sites, accompanied by the formation of functional GJs between NK/DCs and NK/tumor cells, respectively. Cx43-GJ-mediated intercellular communication (GJIC) between human NK and DCs was bidirectional. Blockage of Cx43-GJIC inhibited NK cell activation, though it affected neither the phenotype nor the function of DCs. Cx43 knockdown or inhibition using mimetic peptides greatly reduced CD69 and CD25 expression and IFN-γ release by DC-stimulated NK cells. Moreover, blocking Cx43 strongly inhibited the NK cell-mediated tumor cell lysis associated with inhibition of granzyme B activity and Ca(2+) influx. Our data identify a novel and active role for Cx43-GJIC in human NK cell activation and antitumor effector functions that may be important for the design of new immune therapeutic strategies.
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Affiliation(s)
- Andrés Tittarelli
- Faculty of Medicine, Institute of Biomedical Sciences, University of Chile, 8380453 Santiago, Chile
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Durán-Aniotz C, Segal G, Salazar L, Pereda C, Falcón C, Tempio F, Aguilera R, González R, Pérez C, Tittarelli A, Catalán D, Nervi B, Larrondo M, Salazar-Onfray F, López MN. The immunological response and post-treatment survival of DC-vaccinated melanoma patients are associated with increased Th1/Th17 and reduced Th3 cytokine responses. Cancer Immunol Immunother 2013; 62:761-72. [PMID: 23242374 PMCID: PMC11028820 DOI: 10.1007/s00262-012-1377-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [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: 05/19/2012] [Accepted: 11/14/2012] [Indexed: 12/20/2022]
Abstract
INTRODUCTION Immunization with autologous dendritic cells (DCs) loaded with a heat shock-conditioned allogeneic melanoma cell lysate caused lysate-specific delayed type hypersensitivity (DTH) reactions in a number of patients. These responses correlated with a threefold prolonged long-term survival of DTH(+) with respect to DTH(-) unresponsive patients. Herein, we investigated whether the immunological reactions associated with prolonged survival were related to dissimilar cellular and cytokine responses in blood. MATERIALS AND METHODS Healthy donors and melanoma patient's lymphocytes obtained from blood before and after vaccinations and from DTH biopsies were analyzed for T cell population distribution and cytokine release. RESULTS/DISCUSSION Peripheral blood lymphocytes from melanoma patients have an increased proportion of Th3 (CD4(+) TGF-β(+)) regulatory T lymphocytes compared with healthy donors. Notably, DTH(+) patients showed a threefold reduction of Th3 cells compared with DTH(-) patients after DCs vaccine treatment. Furthermore, DCs vaccination resulted in a threefold augment of the proportion of IFN-γ releasing Th1 cells and in a twofold increase of the IL-17-producing Th17 population in DTH(+) with respect to DTH(-) patients. Increased Th1 and Th17 cell populations in both blood and DTH-derived tissues suggest that these profiles may be related to a more effective anti-melanoma response. CONCLUSIONS Our results indicate that increased proinflammatory cytokine profiles are related to detectable immunological responses in vivo (DTH) and to prolonged patient survival. Our study contributes to the understanding of immunological responses produced by DCs vaccines and to the identification of follow-up markers for patient outcome that may allow a closer individual monitoring of patients.
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Affiliation(s)
- Claudia Durán-Aniotz
- Faculty of Medicine, Institute of Biomedical Sciences, University of Chile, 8380453, Santiago, Chile.
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Tittarelli A, González FE, Pereda C, Mora G, Muñoz L, Saffie C, García T, Díaz D, Falcón C, Hermoso M, López MN, Salazar-Onfray F. Toll-like receptor 4 gene polymorphism influences dendritic cell in vitro function and clinical outcomes in vaccinated melanoma patients. Cancer Immunol Immunother 2012; 61:2067-77. [PMID: 22552381 PMCID: PMC11029707 DOI: 10.1007/s00262-012-1268-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [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: 01/31/2012] [Accepted: 04/11/2012] [Indexed: 12/22/2022]
Abstract
Toll-like receptor 4 (TLR4) is expressed on dendritic cells (DCs), sensing environmental danger molecules that induce their activation and maturation. Recently, we reported a method for the production of therapeutic DCs against melanoma, called tumor antigen-presenting cells (TAPCells), using a heat-shocked allogeneic melanoma cell lysate (TRIMEL) as an activation factor and antigen provider. Since TRIMEL contains endogenous TLR4 ligands, we evaluated the role of TLR4 in TAPCells differentiation by antibody neutralization and the association of a Tlr4 polymorphism (896A/G) (Asp299Gly), determined by PCR-RFLP, with the in vitro activation capacity and the clinical outcome of TAPCells-vaccinated patients. Antibody blocking of monocyte TLR4 inhibited surface expression, determined by flow cytometry, of the major histocompatibility complex class I, CCR7, CD80, CD83 and CD86 on TAPCells, reduced interleukin (IL)-6 and tumor necrosis factor -α gene expression evaluated by qRT-PCR, and also inhibited the TAPCells-mediated interferon-γ (IFN-γ) secretion of melanoma-specific CD8(+) T cells determined by ELISpot (p < 0.01). Moreover, CD8(+) T-cell activation capacity was significantly reduced in TAPCells bearing the TLR4 Asp299Gly receptor (p < 0.05). Finally, TAPCells-vaccinated stage-IV melanoma patients bearing the Tlr4 896G allele showed a shortened post-therapy median survival rate compared with those carrying the Tlr4 896A allele (p < 0.05; log-rank test). Our results indicate that TLR4 is a key receptor for the tumor lysate-mediated in vitro generation of clinically efficient antigen-presenting cells. Further analysis of patients included in different vaccine protocols is necessary for definitively establishing a role for TLR4 polymorphism in clinical responses.
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Affiliation(s)
- Andrés Tittarelli
- Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453, Santiago Chile, Chile.
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Mendoza-Naranjo A, Bouma G, Pereda C, Ramírez M, Webb KF, Tittarelli A, López MN, Kalergis AM, Thrasher AJ, Becker DL, Salazar-Onfray F. Functional gap junctions accumulate at the immunological synapse and contribute to T cell activation. J Immunol 2011; 187:3121-32. [PMID: 21844382 PMCID: PMC3173876 DOI: 10.4049/jimmunol.1100378] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Gap junction (GJ) mediates intercellular communication through linked hemichannels from each of two adjacent cells. Using human and mouse models, we show that connexin 43 (Cx43), the main GJ protein in the immune system, was recruited to the immunological synapse during T cell priming as both GJs and stand-alone hemichannels. Cx43 accumulation at the synapse was Ag specific and time dependent, and required an intact actin cytoskeleton. Fluorescence recovery after photobleaching and Cx43-specific inhibitors were used to prove that intercellular communication between T cells and dendritic cells is bidirectional and specifically mediated by Cx43. Moreover, this intercellular cross talk contributed to T cell activation as silencing of Cx43 with an antisense or inhibition of GJ docking impaired intracellular Ca(2+) responses and cytokine release by T cells. These findings identify Cx43 as an important functional component of the immunological synapse and reveal a crucial role for GJs and hemichannels as coordinators of the dendritic cell-T cell signaling machinery that regulates T cell activation.
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Affiliation(s)
- Ariadna Mendoza-Naranjo
- Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, 8380453 Santiago, Chile.
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Aguilera R, Saffie C, Tittarelli A, González FE, Ramírez M, Reyes D, Pereda C, Hevia D, García T, Salazar L, Ferreira A, Hermoso M, Mendoza-Naranjo A, Ferrada C, Garrido P, López MN, Salazar-Onfray F. Heat-Shock Induction of Tumor-Derived Danger Signals Mediates Rapid Monocyte Differentiation into Clinically Effective Dendritic Cells. Clin Cancer Res 2011; 17:2474-83. [DOI: 10.1158/1078-0432.ccr-10-2384] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Tittarelli A, Santiago M, Morales A, Meisel LA, Silva H. Isolation and functional characterization of cold-regulated promoters, by digitally identifying peach fruit cold-induced genes from a large EST dataset. BMC Plant Biol 2009; 9:121. [PMID: 19772651 PMCID: PMC2754992 DOI: 10.1186/1471-2229-9-121] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2009] [Accepted: 09/22/2009] [Indexed: 05/21/2023]
Abstract
BACKGROUND Cold acclimation is the process by which plants adapt to the low, non freezing temperatures that naturally occur during late autumn or early winter. This process enables the plants to resist the freezing temperatures of winter. Temperatures similar to those associated with cold acclimation are also used by the fruit industry to delay fruit ripening in peaches. However, peaches that are subjected to long periods of cold storage may develop chilling injury symptoms (woolliness and internal breakdown). In order to better understand the relationship between cold acclimation and chilling injury in peaches, we isolated and functionally characterized cold-regulated promoters from cold-inducible genes identified by digitally analyzing a large EST dataset. RESULTS Digital expression analyses of EST datasets, revealed 164 cold-induced peach genes, several of which show similarities to genes associated with cold acclimation and cold stress responses. The promoters of three of these cold-inducible genes (Ppbec1, Ppxero2 and Pptha1) were fused to the GUS reporter gene and characterized for cold-inducibility using both transient transformation assays in peach fruits (in fruta) and stable transformation in Arabidopsis thaliana. These assays demonstrate that the promoter Pptha1 is not cold-inducible, whereas the Ppbec1 and Ppxero2 promoter constructs are cold-inducible. CONCLUSION This work demonstrates that during cold storage, peach fruits differentially express genes that are associated with cold acclimation. Functional characterization of these promoters in transient transformation assays in fruta as well as stable transformation in Arabidopsis, demonstrate that the isolated Ppbec1 and Ppxero2 promoters are cold-inducible promoters, whereas the isolated Pptha1 promoter is not cold-inducible. Additionally, the cold-inducible activity of the Ppbec1 and Ppxero2 promoters suggest that there is a conserved heterologous cold-inducible regulation of these promoters in peach and Arabidopsis. These results reveal that digital expression analyses may be used in non-model species to identify candidate genes whose promoters are differentially expressed in response to exogenous stimuli.
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Affiliation(s)
- Andrés Tittarelli
- Millennium Nucleus in Plant Cell Biotechnology (MN-PCB), Santiago, Chile
- Plant Functional Genomics & Bioinformatics Lab, Universidad Andrés Bello, Santiago, Chile
| | - Margarita Santiago
- Millennium Nucleus in Plant Cell Biotechnology (MN-PCB), Santiago, Chile
- Plant Functional Genomics & Bioinformatics Lab, Universidad Andrés Bello, Santiago, Chile
| | - Andrea Morales
- Millennium Nucleus in Plant Cell Biotechnology (MN-PCB), Santiago, Chile
- Plant Functional Genomics & Bioinformatics Lab, Universidad Andrés Bello, Santiago, Chile
| | - Lee A Meisel
- Millennium Nucleus in Plant Cell Biotechnology (MN-PCB), Santiago, Chile
- Centro de Biotecnología Vegetal, Universidad Andrés Bello, Santiago, Chile
| | - Herman Silva
- Millennium Nucleus in Plant Cell Biotechnology (MN-PCB), Santiago, Chile
- Plant Functional Genomics & Bioinformatics Lab, Universidad Andrés Bello, Santiago, Chile
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Vizoso P, Meisel LA, Tittarelli A, Latorre M, Saba J, Caroca R, Maldonado J, Cambiazo V, Campos-Vargas R, Gonzalez M, Orellana A, Silva H. Comparative EST transcript profiling of peach fruits under different post-harvest conditions reveals candidate genes associated with peach fruit quality. BMC Genomics 2009. [PMID: 19744325 DOI: 10.1186/1471‐2164‐10‐423] [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: 11/10/2022] Open
Abstract
BACKGROUND Cold storage is used to inhibit peach fruit ripening during shipment to distant markets. However, this cold storage can negatively affect the quality of the fruit when it is ripened, resulting in disorders such as wooliness, browning or leathering. In order to understand the individual and combined biological effects that factors such as cold storage and ripening have on the fruit and fruit quality, we have taken a comparative EST transcript profiling approach to identify genes that are differentially expressed in response to these factors. RESULTS We sequenced 50,625 Expressed Sequence Tags (ESTs) from peach mesocarp (Prunus persica O'Henry variety) stored at four different postharvest conditions. A total of 10,830 Unigenes (4,169 contigs and 6,661 singletons) were formed by assembling these ESTs. Additionally, a collection of 614 full-length and 1,109 putative full-length cDNA clones within flanking loxP recombination sites was created. Statistically analyzing the EST population, we have identified genes that are differentially expressed during ripening, in response to cold storage or the combined effects of cold storage and ripening. Pair-wise comparisons revealed 197 contigs with at least one significant difference in transcript abundance between at least two conditions. Gene expression profile analyses revealed that the contigs may be classified into 13 different clusters of gene expression patterns. These clusters include groups of contigs that increase or decrease transcript abundance during ripening, in response to cold or ripening plus cold. CONCLUSION These analyses have enabled us to statistically identify novel genes and gene clusters that are differentially expressed in response to post-harvest factors such as long-term cold storage, ripening or a combination of these two factors. These differentially expressed genes reveal the complex biological processes that are associated with these factors, as well as a large number of putative gene families that may participate differentially in these processes. In particular, these analyzes suggest that woolly fruits lack the increased boost of metabolic processes necessary for ripening. Additionally, these results suggest that the mitochondria and plastids play a major role in these processes. The EST sequences and full-length cDNA clones developed in this work, combined with the large population of differentially expressed genes may serve as useful tools and markers that will enable the scientific community to better define the molecular processes that affect fruit quality in response to post-harvest conditions and the organelles that participate in these processes.
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Affiliation(s)
- Paula Vizoso
- Centro de Biotecnología Vegetal, Universidad Andrés Bello, Santiago, Chile
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31
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Vizoso P, Meisel LA, Tittarelli A, Latorre M, Saba J, Caroca R, Maldonado J, Cambiazo V, Campos-Vargas R, Gonzalez M, Orellana A, Silva H. Comparative EST transcript profiling of peach fruits under different post-harvest conditions reveals candidate genes associated with peach fruit quality. BMC Genomics 2009; 10:423. [PMID: 19744325 PMCID: PMC2748099 DOI: 10.1186/1471-2164-10-423] [Citation(s) in RCA: 57] [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: 12/19/2008] [Accepted: 09/10/2009] [Indexed: 12/02/2022] Open
Abstract
Background Cold storage is used to inhibit peach fruit ripening during shipment to distant markets. However, this cold storage can negatively affect the quality of the fruit when it is ripened, resulting in disorders such as wooliness, browning or leathering. In order to understand the individual and combined biological effects that factors such as cold storage and ripening have on the fruit and fruit quality, we have taken a comparative EST transcript profiling approach to identify genes that are differentially expressed in response to these factors. Results We sequenced 50,625 Expressed Sequence Tags (ESTs) from peach mesocarp (Prunus persica O'Henry variety) stored at four different postharvest conditions. A total of 10,830 Unigenes (4,169 contigs and 6,661 singletons) were formed by assembling these ESTs. Additionally, a collection of 614 full-length and 1,109 putative full-length cDNA clones within flanking loxP recombination sites was created. Statistically analyzing the EST population, we have identified genes that are differentially expressed during ripening, in response to cold storage or the combined effects of cold storage and ripening. Pair-wise comparisons revealed 197 contigs with at least one significant difference in transcript abundance between at least two conditions. Gene expression profile analyses revealed that the contigs may be classified into 13 different clusters of gene expression patterns. These clusters include groups of contigs that increase or decrease transcript abundance during ripening, in response to cold or ripening plus cold. Conclusion These analyses have enabled us to statistically identify novel genes and gene clusters that are differentially expressed in response to post-harvest factors such as long-term cold storage, ripening or a combination of these two factors. These differentially expressed genes reveal the complex biological processes that are associated with these factors, as well as a large number of putative gene families that may participate differentially in these processes. In particular, these analyzes suggest that woolly fruits lack the increased boost of metabolic processes necessary for ripening. Additionally, these results suggest that the mitochondria and plastids play a major role in these processes. The EST sequences and full-length cDNA clones developed in this work, combined with the large population of differentially expressed genes may serve as useful tools and markers that will enable the scientific community to better define the molecular processes that affect fruit quality in response to post-harvest conditions and the organelles that participate in these processes.
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Affiliation(s)
- Paula Vizoso
- Centro de Biotecnología Vegetal, Universidad Andrés Bello, Santiago, Chile
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Tittarelli A, Milla L, Vargas F, Morales A, Neupert C, Meisel LA, Salvo-G H, Peñaloza E, Muñoz G, Corcuera LJ, Silva H. Isolation and comparative analysis of the wheat TaPT2 promoter: identification in silico of new putative regulatory motifs conserved between monocots and dicots. J Exp Bot 2007; 58:2573-82. [PMID: 17562688 DOI: 10.1093/jxb/erm123] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Phosphorus deficiency is one of the major nutrient stresses affecting plant growth. Plants respond to phosphate (Pi) deficiency through multiple strategies, including the synthesis of high-affinity Pi transporters. In this study, the expression pattern of one putative wheat high-affinity phosphate transporter, TaPT2, was examined in roots and leaves under Pi-deficient conditions. TaPT2 transcript levels increased in roots of Pi-starved plants. A 579 bp fragment of the TaPT2 promoter is sufficient to drive the expression of the GUS reporter gene specifically in roots of Pi-deprived wheat. This TaPT2 promoter fragment was also able to drive expression of the GUS reporter gene in transgenic Arabidopsis thaliana, under similar growth conditions. Conserved regions and candidate regulatory motifs were detected by comparing this promoter with Pi transporter promoters from barley, rice, and Arabidopsis. Altogether, these results indicate that there are conserved cis-acting elements and trans-acting factors that enable the TaPT2 promoter to be regulated in a tissue-specific and Pi-dependent fashion in both monocots and dicots.
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Affiliation(s)
- A Tittarelli
- Millennium Nucleus in Plant Cell Biology and Center of Plant Biotechnology, Andres Bello University, Av República 217, 837-0146, Santiago, Chile
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Contiero P, Tittarelli A, Tagliabue G, Maghini A, Fabiano S, Crosignani P, Tessandori R. The EpiLink record linkage software: presentation and results of linkage test on cancer registry files. Methods Inf Med 2005; 44:66-71. [PMID: 15778796] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
OBJECTIVES Record linkage, the process of bringing together separately compiled but related records from different databases, is essential in many areas of biomedical research. We developed a record linkage program (EpiLink), which employs a simple mathematical approach. We describe the program and present results obtained testing it in a linkage task. METHODS EpiLink was designed to be flexible with user-friendly settings to tailor linkage and operating parameters to specific linkage tasks, and employ deterministic, probabilistic or sequential deterministic-probabilistic linkage strategies as required. The user can also standardize data format, examine linkage results and accept or discard them. We used EpiLink to link a subset of cases of the Lombardy Cancer Registry (20,724 records) with the Social Security file of the population (1,021,846 records) covered by the registry. The linkage strategy was deterministic, followed by several probabilistic linkage steps. RESULTS Manual inspection of the results showed that EpiLink achieved 98.8% specificity and 96.5% sensitivity. CONCLUSIONS EpiLink is a practical and accurate means of linking records from different databases that can be used by non-statisticians and is efficient in terms of human and financial resources.
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Affiliation(s)
- P Contiero
- Cancer Registry Division, Istituto Nazionale per lo Studio e la Cura dei Tumori Via Venezian 1, 20133 Milan, Italy.
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Tagliabue G, Evangelista A, Tittarelli A, Del Sette D, Contiero P, Crosignani P, Berrino F, Micheli A. Follow-up of the ORDET cohort, Lombardy Cancer Registry, 1987-1997. IARC Sci Publ 2003; 156:67-8. [PMID: 12484127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Affiliation(s)
- G Tagliabue
- Epidemiology Unit, Instituto Nazionale per lo Studio e la Cura dei Tumori, Milan, Italy
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Contiero P, Evangelista A, Tittarelli A, Del Sette D, Krogh V, Berrino F, Tagliabue G. Benign neoplasms: a follow-up study in Italy, 1993-1998. IARC Sci Publ 2003; 156:537-9. [PMID: 12484254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Affiliation(s)
- P Contiero
- Epidemiology Unit, Istituto Nazionale per lo Studio e la Cura dei Tumori, Milan, Italy
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Evangelista A, Tagliabue G, Del Sette D, Tittarelli A, Contiero P, Krogh V, Crosignani P, Berrino F. Malignant tumour follow-up in Italy, 1993-1998. IARC Sci Publ 2003; 156:535-6. [PMID: 12484253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Affiliation(s)
- A Evangelista
- Epidemiology Unit, Istituto Nazionale per lo Studio e la Cura dei Tumori, Milan, Italy
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