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Naughton C, Huidobro C, Catacchio CR, Buckle A, Grimes GR, Nozawa RS, Purgato S, Rocchi M, Gilbert N. Human centromere repositioning activates transcription and opens chromatin fibre structure. Nat Commun 2022; 13:5609. [PMID: 36153345 PMCID: PMC9509383 DOI: 10.1038/s41467-022-33426-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 09/14/2022] [Indexed: 11/09/2022] Open
Abstract
AbstractHuman centromeres appear as constrictions on mitotic chromosomes and form a platform for kinetochore assembly in mitosis. Biophysical experiments led to a suggestion that repetitive DNA at centromeric regions form a compact scaffold necessary for function, but this was revised when neocentromeres were discovered on non-repetitive DNA. To test whether centromeres have a special chromatin structure we have analysed the architecture of a neocentromere. Centromere repositioning is accompanied by RNA polymerase II recruitment and active transcription to form a decompacted, negatively supercoiled domain enriched in ‘open’ chromatin fibres. In contrast, centromerisation causes a spreading of repressive epigenetic marks to surrounding regions, delimited by H3K27me3 polycomb boundaries and divergent genes. This flanking domain is transcriptionally silent and partially remodelled to form ‘compact’ chromatin, similar to satellite-containing DNA sequences, and exhibits genomic instability. We suggest transcription disrupts chromatin to provide a foundation for kinetochore formation whilst compact pericentromeric heterochromatin generates mechanical rigidity.
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Amado-Rodríguez L, Del Busto C, López-Alonso I, Parra D, Mayordomo-Colunga J, Arias-Guillén M, Albillos-Almaraz R, Martín-Vicente P, López-Martínez C, Huidobro C, Camporota L, Slutsky AS, Albaiceta GM. Biotrauma during ultra-low tidal volume ventilation and venoarterial extracorporeal membrane oxygenation in cardiogenic shock: a randomized crossover clinical trial. Ann Intensive Care 2021; 11:132. [PMID: 34453620 PMCID: PMC8397875 DOI: 10.1186/s13613-021-00919-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 08/05/2021] [Indexed: 01/19/2023] Open
Abstract
Background Cardiogenic pulmonary oedema (CPE) may contribute to ventilator-associated lung injury (VALI) in patients with cardiogenic shock. The appropriate ventilatory strategy remains unclear. We aimed to evaluate the impact of ultra-low tidal volume ventilation with tidal volume of 3 ml/kg predicted body weight (PBW) in patients with CPE and veno–arterial extracorporeal membrane oxygenation (V–A ECMO) on lung inflammation compared to conventional ventilation. Methods A single-centre randomized crossover trial was performed in the Cardiac Intensive Care Unit (ICU) at a tertiary university hospital. Seventeen adults requiring V–A ECMO and mechanical ventilation due to cardiogenic shock were included from February 2017 to December 2018. Patients were ventilated for two consecutive periods of 24 h with tidal volumes of 6 and 3 ml/kg of PBW, respectively, applied in random order. Primary outcome was the change in proinflammatory mediators in bronchoalveolar lavage fluid (BALF) between both ventilatory strategies. Results Ventilation with 3 ml/kg PBW yielded lower driving pressures and end-expiratory lung volumes. Overall, there were no differences in BALF cytokines. Post hoc analyses revealed that patients with high baseline levels of IL-6 showed statistically significant lower levels of IL-6 and IL-8 during ultra-low tidal volume ventilation. This reduction was significantly proportional to the decrease in driving pressure. In contrast, those with lower IL-6 baseline levels showed a significant increase in these biomarkers. Conclusions Ultra-low tidal volume ventilation in patients with CPE and V–A ECMO may attenuate inflammation in selected cases. VALI may be driven by an interaction between the individual proinflammatory profile and the mechanical load overimposed by the ventilator. Trial registration The trial was registered in ClinicalTrials.gov (identifier NCT03041428, Registration date: 2nd February 2017). Supplementary Information The online version contains supplementary material available at 10.1186/s13613-021-00919-0.
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Affiliation(s)
- Laura Amado-Rodríguez
- Unidad de Cuidados Intensivos Cardiológicos, Hospital Universitario Central de Asturias, Avda de Roma s/n, 33011, Oviedo, Spain. .,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain. .,Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.
| | - Cecilia Del Busto
- Unidad de Cuidados Intensivos Cardiológicos, Hospital Universitario Central de Asturias, Avda de Roma s/n, 33011, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
| | - Inés López-Alonso
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain.,Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
| | - Diego Parra
- Unidad de Cuidados Intensivos Cardiológicos, Hospital Universitario Central de Asturias, Avda de Roma s/n, 33011, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
| | - Juan Mayordomo-Colunga
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain.,Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.,Unidad de Cuidados Intensivos Pediátricos, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Miguel Arias-Guillén
- Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.,Servicio de Neumología, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Rodrigo Albillos-Almaraz
- Unidad de Cuidados Intensivos Cardiológicos, Hospital Universitario Central de Asturias, Avda de Roma s/n, 33011, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
| | - Paula Martín-Vicente
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain.,Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.,Departamento de Biología Funcional, Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Universidad de Oviedo, Oviedo, Spain
| | - Cecilia López-Martínez
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain.,Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
| | - Covadonga Huidobro
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain.,Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
| | - Luigi Camporota
- Department of Adult Critical Care, Guy's and St Thomas' NHS Foundation Trust, Health Centre for Human and Applied Physiological Sciences, King's College, London, UK
| | - Arthur S Slutsky
- Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, Canada
| | - Guillermo M Albaiceta
- Unidad de Cuidados Intensivos Cardiológicos, Hospital Universitario Central de Asturias, Avda de Roma s/n, 33011, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain.,Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.,Departamento de Biología Funcional, Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Universidad de Oviedo, Oviedo, Spain
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3
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Blázquez-Prieto J, Huidobro C, López-Alonso I, Amado-Rodriguez L, Martín-Vicente P, López-Martínez C, Crespo I, Pantoja C, Fernandez-Marcos PJ, Serrano M, Sznajder JI, Albaiceta GM. Activation of p21 limits acute lung injury and induces early senescence after acid aspiration and mechanical ventilation. Transl Res 2021; 233:104-116. [PMID: 33515780 PMCID: PMC7838583 DOI: 10.1016/j.trsl.2021.01.008] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 12/13/2020] [Accepted: 01/21/2021] [Indexed: 12/27/2022]
Abstract
The p53/p21 pathway is activated in response to cell stress. However, its role in acute lung injury has not been elucidated. Acute lung injury is associated with disruption of the alveolo-capillary barrier leading to acute respiratory distress syndrome (ARDS). Mechanical ventilation may be necessary to support gas exchange in patients with ARDS, however, high positive airway pressures can cause regional overdistension of alveolar units and aggravate lung injury. Here, we report that acute lung injury and alveolar overstretching activate the p53/p21 pathway to maintain homeostasis and avoid massive cell apoptosis. A systematic pooling of transcriptomic data from animal models of lung injury demonstrates the enrichment of specific p53- and p21-dependent gene signatures and a validated senescence profile. In a clinically relevant, murine model of acid aspiration and mechanical ventilation, we observed changes in the nuclear envelope and the underlying chromatin, DNA damage and activation of the Tp53/p21 pathway. Absence of Cdkn1a decreased the senescent response, but worsened lung injury due to increased cell apoptosis. Conversely, treatment with lopinavir and/or ritonavir led to Cdkn1a overexpression and ameliorated cell apoptosis and lung injury. The activation of these mechanisms was associated with early markers of senescence, including expression of senescence-related genes and increases in senescence-associated heterochromatin foci in alveolar cells. Autopsy samples from lungs of patients with ARDS revealed increased senescence-associated heterochromatin foci. Collectively, these results suggest that acute lung injury activates p53/p21 as an antiapoptotic mechanism to ameliorate damage, but with the side effect of induction of senescence.
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Affiliation(s)
| | - Covadonga Huidobro
- Instituto de Investigación Sanitaria del Principado de Asturias. Oviedo, Spain; Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias. Madrid, Spain
| | - Inés López-Alonso
- Instituto de Investigación Sanitaria del Principado de Asturias. Oviedo, Spain; Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias. Madrid, Spain; Instituto Universitario de Oncología del Principado de Asturias. Oviedo, Spain
| | - Laura Amado-Rodriguez
- Instituto de Investigación Sanitaria del Principado de Asturias. Oviedo, Spain; Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias. Madrid, Spain; Instituto Universitario de Oncología del Principado de Asturias. Oviedo, Spain; Unidad de Cuidados Intensivos Cardiológicos. Hospital Universitario Central de Asturias. Oviedo, Spain
| | - Paula Martín-Vicente
- Instituto de Investigación Sanitaria del Principado de Asturias. Oviedo, Spain; Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias. Madrid, Spain; Instituto Universitario de Oncología del Principado de Asturias. Oviedo, Spain
| | - Cecilia López-Martínez
- Instituto de Investigación Sanitaria del Principado de Asturias. Oviedo, Spain; Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias. Madrid, Spain; Instituto Universitario de Oncología del Principado de Asturias. Oviedo, Spain
| | - Irene Crespo
- Departamento de Biología Funcional. Universidad de Oviedo. Oviedo, Spain
| | - Cristina Pantoja
- Metabolic Syndrome Group - BIOPROMET, Madrid Institute for Advanced Studies - IMDEA Food, CEI UAM+CSIC. Madrid, Spain
| | - Pablo J Fernandez-Marcos
- Metabolic Syndrome Group - BIOPROMET, Madrid Institute for Advanced Studies - IMDEA Food, CEI UAM+CSIC. Madrid, Spain
| | - Manuel Serrano
- Institute for Research in Biomedicine (IRB Barcelona); Barcelona Institute of Science and Technology (BIST); Catalan Institution for Research and Advanced Studies (ICREA); Barcelona, Spain
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Guillermo M Albaiceta
- Instituto de Investigación Sanitaria del Principado de Asturias. Oviedo, Spain; Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias. Madrid, Spain; Instituto Universitario de Oncología del Principado de Asturias. Oviedo, Spain; Unidad de Cuidados Intensivos Cardiológicos. Hospital Universitario Central de Asturias. Oviedo, Spain; Departamento de Biología Funcional. Universidad de Oviedo. Oviedo, Spain.
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4
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Huidobro C, Martín-Vicente P, López-Martínez C, Alonso-López I, Amado-Rodríguez L, Crespo I, M Albaiceta G. Cellular and molecular features of senescence in acute lung injury. Mech Ageing Dev 2020; 193:111410. [PMID: 33249191 DOI: 10.1016/j.mad.2020.111410] [Citation(s) in RCA: 4] [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: 05/31/2020] [Accepted: 11/20/2020] [Indexed: 12/14/2022]
Abstract
A wide range of insults can trigger acute injury in the lungs, which eventually may lead to respiratory failure and death of patients. Current treatment relies mainly on supportive measures and mechanical ventilation. Even so, survivors frequently develop important sequels that compromise quality of life. In the search for new approaches to prevent and treat acute lung injury, many investigations have focused on molecular and cellular pathways which could exert a pathogenic role in this disease. Herein, we review recent findings in the literature suggesting that cellular senescence could be involved in lung injury and discuss the potential use of senotherapies to prevent disease progression.
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Affiliation(s)
- Covadonga Huidobro
- Instituto de Investigación Sanitaria del Principado de Asturias, Avenida de Roma s/n, 33011, Oviedo, Spain.
| | - Paula Martín-Vicente
- Instituto de Investigación Sanitaria del Principado de Asturias, Avenida de Roma s/n, 33011, Oviedo, Spain; Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Calle de Melchor Fernández Almagro, 3, 28029, Madrid, Spain; Instituto Universitario de Oncología del Principado de Asturias, Calle Fernando Bongera s/n, 33006, Oviedo, Spain
| | - Cecilia López-Martínez
- Instituto de Investigación Sanitaria del Principado de Asturias, Avenida de Roma s/n, 33011, Oviedo, Spain; Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Calle de Melchor Fernández Almagro, 3, 28029, Madrid, Spain; Instituto Universitario de Oncología del Principado de Asturias, Calle Fernando Bongera s/n, 33006, Oviedo, Spain
| | - Inés Alonso-López
- Instituto de Investigación Sanitaria del Principado de Asturias, Avenida de Roma s/n, 33011, Oviedo, Spain; Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Calle de Melchor Fernández Almagro, 3, 28029, Madrid, Spain; Instituto Universitario de Oncología del Principado de Asturias, Calle Fernando Bongera s/n, 33006, Oviedo, Spain
| | - Laura Amado-Rodríguez
- Instituto de Investigación Sanitaria del Principado de Asturias, Avenida de Roma s/n, 33011, Oviedo, Spain; Unidad de Cuidados Intensivos Cardiológicos, Hospital Universitario Central de Asturias, Oviedo, Avenida de Roma s/n, 33011, Oviedo, Spain
| | - Irene Crespo
- Departamento de Biología Funcional. Universidad de Oviedo, C/ Julián Clavería s/n, 33006, Oviedo, Spain
| | - Guillermo M Albaiceta
- Instituto de Investigación Sanitaria del Principado de Asturias, Avenida de Roma s/n, 33011, Oviedo, Spain; Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Calle de Melchor Fernández Almagro, 3, 28029, Madrid, Spain; Instituto Universitario de Oncología del Principado de Asturias, Calle Fernando Bongera s/n, 33006, Oviedo, Spain; Unidad de Cuidados Intensivos Cardiológicos, Hospital Universitario Central de Asturias, Oviedo, Avenida de Roma s/n, 33011, Oviedo, Spain; Departamento de Biología Funcional. Universidad de Oviedo, C/ Julián Clavería s/n, 33006, Oviedo, Spain
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5
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López-Alonso I, Blázquez-Prieto J, Amado-Rodríguez L, González-López A, Astudillo A, Sánchez M, Huidobro C, López-Martínez C, Dos Santos CC, Albaiceta GM. Preventing loss of mechanosensation by the nuclear membranes of alveolar cells reduces lung injury in mice during mechanical ventilation. Sci Transl Med 2019; 10:10/456/eaam7598. [PMID: 30158154 DOI: 10.1126/scitranslmed.aam7598] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 08/30/2017] [Accepted: 01/25/2018] [Indexed: 01/08/2023]
Abstract
The nuclear membrane acts as a mechanosensor that drives cellular responses following changes in the extracellular environment. Mechanically ventilated lungs are exposed to an abnormally high mechanical load that may result in clinically relevant alveolar damage. We report that mechanical ventilation in mice increased the expression of Lamin-A, a major determinant of nuclear membrane stiffness, in alveolar epithelial cells. Lamin-A expression increased and nuclear membrane compliance decreased in human bronchial epithelial cells after a mechanical stretch stimulus and in a murine model of lung injury after positive-pressure ventilation. Reducing Lamin-A maturation by depletion of the protease-encoding gene Zmpste24 preserved alveolar nuclear membrane compliance after mechanical ventilation in mice. Ventilator-induced proapoptotic gene expression changes and lung injury were reduced in mice lacking Zmpste24 compared to wild-type control animals. Similarly, treatment with the human immunodeficiency virus protease inhibitors lopinavir and ritonavir reduced the accumulation of Lamin-A at nuclear membranes and preserved nuclear membrane compliance after mechanical ventilation, mimicking the protective phenotype of Zmpste24-/- animals. These results show that the pathophysiological response to lung mechanical stretch is sensed by the nuclear membranes of lung alveolar cells, and suggest that protease inhibitors might be effective in preventing ventilator-induced lung injury.
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Affiliation(s)
- Inés López-Alonso
- Área del Corazón, Hospital Universitario Central de Asturias, 33011 Oviedo, Spain.,Departamento de Biología Funcional, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, 33005 Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias, 33011 Oviedo, Spain.,Centro de Investigación Biomédica En Red-Enfermedades Respiratorias, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Jorge Blázquez-Prieto
- Área del Corazón, Hospital Universitario Central de Asturias, 33011 Oviedo, Spain.,Departamento de Biología Funcional, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, 33005 Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias, 33011 Oviedo, Spain.,Centro de Investigación Biomédica En Red-Enfermedades Respiratorias, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Laura Amado-Rodríguez
- Área del Corazón, Hospital Universitario Central de Asturias, 33011 Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias, 33011 Oviedo, Spain.,Centro de Investigación Biomédica En Red-Enfermedades Respiratorias, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Adrián González-López
- Centro de Investigación Biomédica En Red-Enfermedades Respiratorias, Instituto de Salud Carlos III, 28029 Madrid, Spain.,Department of Anesthesiology and Operative Intensive Care Medicine, Charité Universitätsmedizin, 10117 Berlin, Germany
| | - Aurora Astudillo
- Servicio de Anatomía Patológica, Hospital Universitario Central de Asturias, 33011 Oviedo, Spain.,Departamento de Cirugía y Especialidades Médicoquirúrgicas, Universidad de Oviedo, 33005 Oviedo, Spain
| | - Manuel Sánchez
- Área de Farmacología, Departamento de Medicina, Universidad de Oviedo, 33005 Oviedo, Spain
| | - Covadonga Huidobro
- Área del Corazón, Hospital Universitario Central de Asturias, 33011 Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias, 33011 Oviedo, Spain.,Centro de Investigación Biomédica En Red-Enfermedades Respiratorias, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Cecilia López-Martínez
- Departamento de Biología Funcional, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, 33005 Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias, 33011 Oviedo, Spain
| | - Claudia C Dos Santos
- Interdepartmental Division of Critical Care, Keenan Research Centre of the Li Ka Shing Knowledge Institute of St. Michael's Hospital, University of Toronto, Toronto, Ontario M5B 1WB, Canada
| | - Guillermo M Albaiceta
- Área del Corazón, Hospital Universitario Central de Asturias, 33011 Oviedo, Spain. .,Departamento de Biología Funcional, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, 33005 Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias, 33011 Oviedo, Spain.,Centro de Investigación Biomédica En Red-Enfermedades Respiratorias, Instituto de Salud Carlos III, 28029 Madrid, Spain
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6
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Rodriguez RM, Suarez-Alvarez B, Lavín JL, Ascensión AM, Gonzalez M, Lozano JJ, Raneros AB, Bulnes PD, Vidal-Castiñeira JR, Huidobro C, Martin-Martin C, Sanz AB, Ruiz-Ortega M, Puig-Kröger A, Corbí AL, Araúzo-Bravo MJ, Aransay AM, Lopez-Larrea C. Signal Integration and Transcriptional Regulation of the Inflammatory Response Mediated by the GM-/M-CSF Signaling Axis in Human Monocytes. Cell Rep 2019; 29:860-872.e5. [DOI: 10.1016/j.celrep.2019.09.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 06/27/2019] [Accepted: 09/11/2019] [Indexed: 12/15/2022] Open
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7
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Arias Guillen M, De Francisco R, Riestra-Menéndez S, Muñiz-Albaiceta G, González-Budiño MT, García-Clemente MM, Del Busto C, Santibáñez-Margüello M, Castaño-García A, Martínez-González S, Huidobro C, Pérez-González LA, Ruiz-Alvarez I, Herrero-Huertas J, Ugarriza P, Jiménez-Beltrán V, Flórez-Díez P, Rodríguez N, Bailón C, Gómez-Mañas S, Losada-Dieguez A, Escalante P. TB status in a dynamic cohort of patients with Inflammatory Bowel Disease receiving immunosuppression treatment, with up to 8 years of follow-up. Tuberculosis (Edinb) 2019. [DOI: 10.1183/13993003.congress-2019.oa3818] [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: 11/05/2022]
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8
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Blázquez-Prieto J, López-Alonso I, Huidobro C, Albaiceta GM. The Emerging Role of Neutrophils in Repair after Acute Lung Injury. Am J Respir Cell Mol Biol 2018; 59:289-294. [DOI: 10.1165/rcmb.2018-0101ps] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Jorge Blázquez-Prieto
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
- Departamento de Biología Funcional, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain
- Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain; and
- Unidad de Cuidados Intensivos Cardiológicos, Área del Corazón, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Inés López-Alonso
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
- Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain; and
- Unidad de Cuidados Intensivos Cardiológicos, Área del Corazón, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Covadonga Huidobro
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
- Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain; and
- Unidad de Cuidados Intensivos Cardiológicos, Área del Corazón, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Guillermo M. Albaiceta
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
- Departamento de Biología Funcional, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain
- Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain; and
- Unidad de Cuidados Intensivos Cardiológicos, Área del Corazón, Hospital Universitario Central de Asturias, Oviedo, Spain
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9
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Abstract
Cell migration is a core process to preserve homeostasis. Release of chemotactic signals induces changes in cell cytoskeleton to facilitate migration. This includes the rearrangement of cytoskeleton, genomic reprogramming and the modification of the surrounding extracellular matrix (ECM) to allow the motion of cells through. In the special case of repair after acute lung injury, cells must migrate while exposed to an increased mechanical stretch caused either by an increased work of breathing or positive-pressure ventilation. Interestingly, the cell response to this increased mechanical load can modify virtually all the mechanisms involved in cell migration. In this review we explore the interplay between stretch and the machinery responsible for cell migration. A translational approach to find new therapies in acute lung injury must take into account these interactions in order to develop effective treatments that promote lung repair.
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Affiliation(s)
- Cecilia López-Martínez
- Departamento de Biología Funcional, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
| | - Covadonga Huidobro
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
| | - Guillermo M Albaiceta
- Departamento de Biología Funcional, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain.,Unidad de Cuidados Intensivos Cardiológicos, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Inés López-Alonso
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
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10
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Blázquez-Prieto J, López-Alonso I, Amado-Rodríguez L, Huidobro C, González-López A, Kuebler WM, Albaiceta GM. Impaired lung repair during neutropenia can be reverted by matrix metalloproteinase-9. Thorax 2017; 73:321-330. [PMID: 28947666 DOI: 10.1136/thoraxjnl-2017-210105] [Citation(s) in RCA: 40] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 07/26/2017] [Accepted: 09/04/2017] [Indexed: 01/04/2023]
Abstract
BACKGROUND Neutrophils may cause tissue disruption during migration and by releasing cytotoxic molecules. However, the benefits of neutrophil depletion observed in experimental models of lung injury do not correspond with the poor outcome of neutropenic patients. METHODS To clarify the role of neutrophils during repair, mice with ventilator induced lung injury (VILI) were rendered neutropenic after damage, and followed for 48 hours of spontaneous breathing. Lungs were harvested and inflammatory mediators and matrix metalloproteinases measured. Bronchoalveolar lavage fluid (BALF) from ventilated patients with acute respiratory distress syndrome, with or without neutropenia, was collected, the same mediators measured and their effects in an ex vivo model of alveolar repair studied. Finally, neutropenic mice were treated after VILI with exogenous matrix metalloproteinase-9 (MMP-9). RESULTS Lungs from neutropenic animals showed delayed repair and displayed higher levels of tumour necrosis factor α, interferon γ and macrophage inflammatory protein 2, and absence of MMP-9. BALF from ventilated neutropenic patients with acute respiratory distress syndrome showed similar results. BALFs from neutropenic patients yielded a delayed closure rate of epithelial wounds ex vivo, which was improved by removal of collagen or addition of exogenous MMP-9. Lastly, treatment of neutropenic mice with exogenous MMP-9 after VILI reduced tissue damage without modifying cytokine concentrations. CONCLUSION Release of MMP-9 from neutrophils is required for adequate matrix processing and lung repair.
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Affiliation(s)
- Jorge Blázquez-Prieto
- Departamento de Biología Funcional, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain.,Unidad de Cuidados Intensivos Cardiológicos, Área del Corazón, Hospital Universitario Central de Asturias, Oviedo, Spain.,Instituto de Investigación Biosanitaria del Principado de Asturias, Oviedo, Spain
| | - Inés López-Alonso
- Departamento de Biología Funcional, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain.,Unidad de Cuidados Intensivos Cardiológicos, Área del Corazón, Hospital Universitario Central de Asturias, Oviedo, Spain.,Instituto de Investigación Biosanitaria del Principado de Asturias, Oviedo, Spain
| | - Laura Amado-Rodríguez
- Unidad de Cuidados Intensivos Cardiológicos, Área del Corazón, Hospital Universitario Central de Asturias, Oviedo, Spain.,Instituto de Investigación Biosanitaria del Principado de Asturias, Oviedo, Spain
| | - Covadonga Huidobro
- Unidad de Cuidados Intensivos Cardiológicos, Área del Corazón, Hospital Universitario Central de Asturias, Oviedo, Spain.,Instituto de Investigación Biosanitaria del Principado de Asturias, Oviedo, Spain
| | - Adrián González-López
- Instituto de Investigación Biosanitaria del Principado de Asturias, Oviedo, Spain.,Department of Anesthesiology and Operative Intensive Care Medicine, Charité Universitätsmedizin, Berlin, Germany
| | | | - Guillermo M Albaiceta
- Departamento de Biología Funcional, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain.,Unidad de Cuidados Intensivos Cardiológicos, Área del Corazón, Hospital Universitario Central de Asturias, Oviedo, Spain.,Instituto de Investigación Biosanitaria del Principado de Asturias, Oviedo, Spain
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11
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Rodriguez RM, Suarez-Alvarez B, Salvanés R, Huidobro C, Toraño EG, Garcia-Perez JL, Lopez-Larrea C, Fernandez AF, Bueno C, Menendez P, Fraga MF. Role of BRD4 in hematopoietic differentiation of embryonic stem cells. Epigenetics 2014; 9:566-78. [PMID: 24445267 DOI: 10.4161/epi.27711] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The bromodomain and extra terminal (BET) protein family member BRD4 is a transcriptional regulator, critical for cell cycle progression and cellular viability. Here, we show that BRD4 plays an important role in embryonic stem cell (ESC) regulation. During differentiation of ESCs, BRD4 expression is upregulated and its gene promoter becomes demethylated. Disruption of BRD4 expression in ESCs did not induce spontaneous differentiation but severely diminished hematoendothelial potential. Although BRD4 regulates c-Myc expression, our data show that the role of BRD4 in hematopoietic commitment is not exclusively mediated by c-Myc. Our results indicate that BRD4 is epigenetically regulated during hematopoietic differentiation ESCs in the context of a still unknown signaling pathway.
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Affiliation(s)
- Ramon M Rodriguez
- Cancer Epigenetics Laboratory; Instituto Universitario de Oncología del Principado de Asturias (IUOPA); HUCA; Universidad de Oviedo; Oviedo, Spain; Department of Immunology; Hospital Universitario Central de Asturias; Oviedo, Spain
| | | | - Ruben Salvanés
- Department of Immunology; Hospital Universitario Central de Asturias; Oviedo, Spain
| | - Covadonga Huidobro
- Cancer Epigenetics Laboratory; Instituto Universitario de Oncología del Principado de Asturias (IUOPA); HUCA; Universidad de Oviedo; Oviedo, Spain; MRC Human Genetics Unit; Institute of Genetics and Molecular Medicine; University of Edinburgh; Western General Hospital; Edinburgh, UK
| | - Estela G Toraño
- Cancer Epigenetics Laboratory; Instituto Universitario de Oncología del Principado de Asturias (IUOPA); HUCA; Universidad de Oviedo; Oviedo, Spain
| | - Jose L Garcia-Perez
- Department of Human DNA Variability; Pfizer-University of Granada and Andalusian Government Center for Genomics and Oncology (GENYO); Granada, Spain
| | - Carlos Lopez-Larrea
- Department of Immunology; Hospital Universitario Central de Asturias; Oviedo, Spain; Fundacion Renal "Íñigo Álvarez de Toledo"; Madrid, Spain
| | - Agustin F Fernandez
- Cancer Epigenetics Laboratory; Instituto Universitario de Oncología del Principado de Asturias (IUOPA); HUCA; Universidad de Oviedo; Oviedo, Spain
| | - Clara Bueno
- Josep Carreras Leukemia Research Institute; Barcelona, Spain; Centre for Genomics and Oncological Research (GENYO); Pfizer/University of Granada/Andalusian Government; Granada, Spain
| | - Pablo Menendez
- Josep Carreras Leukemia Research Institute; Barcelona, Spain; Instituciò Catalana de Reserca i Estudis Avançats (ICREA); Barcelona, Spain
| | - Mario F Fraga
- Cancer Epigenetics Laboratory; Instituto Universitario de Oncología del Principado de Asturias (IUOPA); HUCA; Universidad de Oviedo; Oviedo, Spain; Department of Immunology and Oncology; Centro Nacional de Biotecnología/CNB-CSIC; Cantoblanco; Madrid, Spain
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12
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Reyes D, Salazar L, Espinoza E, Pereda C, Castellón E, Valdevenito R, Huidobro C, Inés Becker M, Lladser A, López MN, Salazar-Onfray F. Tumour cell lysate-loaded dendritic cell vaccine induces biochemical and memory immune response in castration-resistant prostate cancer patients. Br J Cancer 2013; 109:1488-97. [PMID: 23989944 PMCID: PMC3777003 DOI: 10.1038/bjc.2013.494] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2013] [Revised: 07/24/2013] [Accepted: 07/30/2013] [Indexed: 12/16/2022] Open
Abstract
Background: Recently, we produced a tumour antigen-presenting cells (TAPCells) vaccine using a melanoma cell lysate, called TRIMEL, as an antigen source and an activation factor. Tumour antigen-presenting cells induced immunological responses and increased melanoma patient survival. Herein, we investigated the effect of TAPCells loaded with prostate cancer cell lysates (PCCL) as an antigen source, and TRIMEL as a dendritic cell (DC) activation factor; which were co-injected with the Concholepas concholepas haemocyanin (CCH) as an adjuvant on castration-resistant prostate cancer (CRPC) patients. Methods: The lysate mix capacity, for inducing T-cell activation, was analysed by flow cytometry and Elispot. Delayed-type hypersensitivity (DTH) reaction against PCCL, frequency of CD8+ memory T cells (Tm) in blood and prostate-specific antigen (PSA) levels in serum were measured in treated patients. Results: The lysate mix induced functional mature DCs that were capable of activating PCCL-specific T cells. No relevant adverse reactions were observed. Six out of 14 patients showed a significant decrease in levels of PSA. DTH+ patients showed a prolonged PSA doubling-time after treatment. Expansion of functional central and effector CD8+ Tm were detected. Conclusion: Treatment of CRPC patients with lysate-loaded TAPCells and CCH as an adjuvant is safe: generating biochemical and memory immune responses. However, the limited number of cases requires confirmation in a phase II clinical trial.
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Affiliation(s)
- D Reyes
- 1] Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago 8380453, Chile [2] Service of Urology, University of Chile Clinical Hospital, Santiago 8380453, Chile [3] Millennium Institute on Immunology and Immunotherapy, University of Chile, Santiago 8380453 Chile
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13
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Huidobro C, Toraño EG, Fernández AF, Urdinguio RG, Rodríguez RM, Ferrero C, Martínez-Camblor P, Boix L, Bruix J, García-Rodríguez JL, Varela-Rey M, Mato JM, Martínez-Chantar ML, Fraga MF. A DNA methylation signature associated with the epigenetic repression of glycine N-methyltransferase in human hepatocellular carcinoma. J Mol Med (Berl) 2013; 91:939-50. [PMID: 23475283 DOI: 10.1007/s00109-013-1010-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 01/25/2013] [Accepted: 02/12/2013] [Indexed: 12/31/2022]
Abstract
The basic mechanisms underlying promoter DNA hypermethylation in cancer are still largely unknown. It has been proposed that the levels of the methyl donor group in DNA methylation reactions, S-adenosylmethionine (SAMe), might be involved. SAMe levels depend on the glycine-N-methyltransferase (GNMT), a one-carbon group methyltransferase, which catalyzes the conversion of SAMe to S-adenosylhomocysteine in hepatic cells. GNMT has been proposed to display tumor suppressor activity and to be frequently repressed in hepatocellular carcinoma (HCC). In this study, we show that GNMT shows aberrant DNA hypermethylation in some HCC cell lines and primary tumors (20 %). GNMT hypermethylation could contribute to gene repression and its restoration in cell lines displaying hypermethylation-reduced tumor growth in vitro. In agreement, human primary tumors expressing GNMT were of smaller size than tumors showing GNMT hypermethylation. Genome-wide analyses of gene promoter methylation identified 277 genes whose aberrant methylation in HCC was associated with GNMT methylation/expression. The findings in this manuscript indicate that DNA hypermethylation plays an important role in the repression of GNMT in HCC and that loss of GNMT in human HCC could promote the establishment of aberrant DNA methylation patterns at specific gene promoters.
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Affiliation(s)
- Covadonga Huidobro
- Cancer Epigenetics Laboratory, Instituto Universitario de Oncología del Principado de Asturias (IUOPA), HUCA, Universidad de Oviedo, 33006 Oviedo, Spain
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14
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Rotili D, Tarantino D, Nebbioso A, Paolini C, Huidobro C, Lara E, Mellini P, Lenoci A, Pezzi R, Botta G, Lahtela-Kakkonen M, Poso A, Steinkühler C, Gallinari P, De Maria R, Fraga M, Esteller M, Altucci L, Mai A. Discovery of salermide-related sirtuin inhibitors: binding mode studies and antiproliferative effects in cancer cells including cancer stem cells. J Med Chem 2012. [PMID: 23189967 DOI: 10.1021/jm3011614] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Chemical changes performed on 1a (sirtinol) led to a series of SIRT1/2 inhibitors, in some cases more potent than 1a mainly against SIRT1. Tested in human leukemia U937 cells, the benzamide and anilide derivatives 1b, 1c, 2b, and 2c as well as the 4-(2-phenylpropyl)thioanalogue 4c showed huge apoptosis induction, while some sulfinyl and sulfonyl derivatives (5b, 5c, and 6a-c) were highly efficient in granulocytic differentiation. When assayed in human leukemia MOLT4 as well as in human breast MDA-MB-231 and colon RKO cancer cell lines, the anilide 2b (salermide) and the phenylpropylthio analogue 4b emerged as the most potent antiproliferative agents. Tested on colorectal carcinoma and glioblastoma multiforme cancer stem cells (CSCs) from patients, 2b was particularly potent against colorectal carcinoma CSCs, while 4b, 6a, and the SIRT2-selective inhibitor AGK-2 showed the highest effect against glioblastoma multiforme CSCs. Such compounds will be further explored for their broad-spectrum anticancer properties.
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Affiliation(s)
- Dante Rotili
- Istituto Pasteur-Fondazione Cenci Bolognetti, Dipartimento di Chimica e Tecnologie del Farmaco, Università degli Studi di Roma La Sapienza, P.le A. Moro 5, 00185 Roma, Italy
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15
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Urdinguio RG, Fernandez AF, Moncada-Pazos A, Huidobro C, Rodriguez RM, Ferrero C, Martinez-Camblor P, Obaya AJ, Bernal T, Parra-Blanco A, Rodrigo L, Santacana M, Matias-Guiu X, Soldevilla B, Dominguez G, Bonilla F, Cal S, Lopez-Otin C, Fraga MF. Immune-dependent and independent antitumor activity of GM-CSF aberrantly expressed by mouse and human colorectal tumors. Cancer Res 2012; 73:395-405. [PMID: 23108143 DOI: 10.1158/0008-5472.can-12-0806] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Granulocyte-macrophage colony-stimulating factor (GM-CSF/CSF2) is a cytokine produced in the hematologic compartment that may enhance antitumor immune responses, mainly by activation of dendritic cells. Here, we show that more than one-third of human colorectal tumors exhibit aberrant DNA demethylation of the GM-CSF promoter and overexpress the cytokine. Mouse engraftment experiments with autologous and homologous colon tumors engineered to repress the ectopic secretion of GM-CSF revealed the tumor-secreted GM-CSF to have an immune-associated antitumor effect. Unexpectedly, an immune-independent antitumor effect was observed that depended on the ectopic expression of GM-CSF receptor subunits by tumors. Cancer cells expressing GM-CSF and its receptor did not develop into tumors when autografted into immunocompetent mice. Similarly, 100% of the patients with human colon tumors that overexpressed GM-CSF and its receptor subunits survived at least 5 years after diagnosis. These data suggest that expression of GM-CSF and its receptor subunits by colon tumors may be a useful marker for prognosis as well as for patient stratification in cancer immunotherapy.
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Affiliation(s)
- Rocio G Urdinguio
- Cancer Epigenetics Laboratory, HUCA, Institute of Oncology of Asturias (IUOPA), Universidad de Oviedo, Oviedo, Spain
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16
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Huidobro C, Urdinguio RG, Rodríguez RM, Mangas C, Calvanese V, Martínez-Camblor P, Ferrero C, Parra-Blanco A, Rodrigo L, Obaya AJ, Suárez-Fernández L, Astudillo A, Hernando H, Ballestar E, Fernández AF, Fraga MF. A DNA methylation signature associated with aberrant promoter DNA hypermethylation of DNMT3B in human colorectal cancer. Eur J Cancer 2012; 48:2270-81. [PMID: 22244828 DOI: 10.1016/j.ejca.2011.12.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Revised: 11/23/2011] [Accepted: 12/17/2011] [Indexed: 12/16/2022]
Abstract
Altered promoter DNA methylation, one of the most important molecular alterations in cancer, is proposed to correlate with deregulation of DNA methyltransferases, although the molecular mechanisms implicated are still poorly understood. Here we show that the de novo DNA methyltransferase DNMT3B is frequently repressed in human colorectal cancer cell lines (CCL) and primary tumours by aberrant DNA hypermethylation of its distal promoter. At the epigenome level, DNMT3B promoter hypermethylation was associated with the hypomethylation of gene promoters usually hypermethylated in the healthy colon. Forced DNMT3B overexpression in cancer cells restored the methylation levels of these promoters in the healthy colon. Our results show a new molecular mechanism of aberrant DNMT3B regulation in colon cancer and suggest that its expression is associated with the methylation of constitutively hypermethylated promoters in the healthy colon.
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Affiliation(s)
- Covadonga Huidobro
- Cancer Epigenetics Laboratory, Instituto Universitario de Oncología del Principado de Asturias, HUCA, Universidad de Oviedo, Oviedo, Spain
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17
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Huidobro C, Fernandez AF, Fraga MF. Aging epigenetics: causes and consequences. Mol Aspects Med 2012; 34:765-81. [PMID: 22771540 DOI: 10.1016/j.mam.2012.06.006] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Accepted: 06/27/2012] [Indexed: 12/26/2022]
Abstract
Growth and development of higher organisms are regulated by the orchestrated change of epigenetic marks over time. In addition, there is also an epigenetic variation without any apparent role in development that is thought to be the result of the stochastic accumulation of epigenetic errors. The process depends on genetic and environmental factors and, when it takes place in adult stem cells, it could play an important role in aging, although the underlying molecular mechanisms are still largely unknown.
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Affiliation(s)
- Covadonga Huidobro
- Cancer Epigenetics Laboratory, Instituto Universitario de Oncología del Principado de Asturias (IUOPA), HUCA, Universidad de Oviedo, Oviedo, Spain
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18
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Rodriguez RM, Huidobro C, Urdinguio RG, Mangas C, Soldevilla B, Domínguez G, Bonilla F, Fernandez AF, Fraga MF. Aberrant epigenetic regulation of bromodomain BRD4 in human colon cancer. J Mol Med (Berl) 2011; 90:587-95. [PMID: 22120039 DOI: 10.1007/s00109-011-0837-0] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Revised: 10/06/2011] [Accepted: 11/11/2011] [Indexed: 02/07/2023]
Abstract
The bromodomain protein BRD4 is involved in cell proliferation and cell cycle progression, primarily through its role in acetylated chromatin-dependent regulation of transcription at targeted loci. Here, we show that BRD4 is frequently downregulated by aberrant promoter hypermethylation in human colon cancer cell lines and primary tumors. Ectopic re-expression of BRD4 in these colon cancer cell lines markedly reduced in vivo tumor growth, suggesting a role of BRD4 in human colon cancer.
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Affiliation(s)
- R M Rodriguez
- Cancer Epigenetics Laboratory, Instituto Universitario de Oncología del Principado de Asturias (IUOPA), HUCA, Universidad de Oviedo, Oviedo, Spain
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19
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Lara E, Calvanese V, Huidobro C, Fernández AF, Moncada-Pazos A, Obaya AJ, Aguilera O, González-Sancho JM, Sánchez L, Astudillo A, Muñoz A, López-Otín C, Esteller M, Fraga MF. Epigenetic repression of ROR2 has a Wnt-mediated, pro-tumourigenic role in colon cancer. Mol Cancer 2010; 9:170. [PMID: 20591152 PMCID: PMC2903502 DOI: 10.1186/1476-4598-9-170] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2010] [Accepted: 06/30/2010] [Indexed: 01/19/2023] Open
Abstract
Background Wnt factors control cell differentiation through semi-independent molecular cascades known as the β-catenin-dependent (canonical) and -independent (non-canonical) Wnt signalling pathways. Genetic and epigenetic alteration of components of the canonical Wnt signalling pathway is one of the primary mechanisms underlying colon cancer. Despite increasing evidence of the role of the non-canonical pathways in tumourigenesis, however, the underlying molecular mechanisms are poorly understood. Results Here we report that the receptor tyrosine kinase-like orphan receptor 2 (ROR2), a transmembrane receptor for Wnt factors that activates non-canonical pathways, is frequently repressed by aberrant promoter hypermethylation in human colon cancer cell lines and primary tumours. By restoring ROR2 activity in colon cancer cells harbouring ROR2 promoter hypermethylation, we show that the role of ROR2 in colon cancer cells is mediated, at least in part, by canonical Wnt and that its epigenetic-dependent loss can be pro-tumourigenic. Conclusions Our data show the importance of epigenetic alterations of ROR2 in colon cancer, highlighting the close interconnection between canonical and non-canonical Wnt signalling pathways in this type of tumour.
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Affiliation(s)
- Ester Lara
- Department of Immunology and Oncology, National Center for Biotechnology, CNB-CSIC, Cantoblanco, Madrid E-28049, Spain
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21
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Puy J, Huidobro C, David C, Rey-Castro C, Salvador J, Companys E, Garcés J, Galceran J, Cecília J, Mas F. Conditional affinity spectra underlying NICA isotherm. Colloids Surf A Physicochem Eng Asp 2009. [DOI: 10.1016/j.colsurfa.2009.03.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Fullá J, Acevedo C, Varas M, Huidobro C, Cabezas J, Galleguillos V, Catoni D, Cáceres D, Quiñones L. UP.69: Polymorphism of CYP1a1 MSP1 and Mortality in Patients with Prostatic Cancer: Seven-Year Follow-Up. Urology 2008. [DOI: 10.1016/j.urology.2008.08.396] [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: 11/28/2022]
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23
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Cabezas J, Huidobro C, Larson T, Fruland B, Acevedo C, Marchant F, Palma C, Olea M, Reyes D, Storme O. SCHU-49: Electrochemical Ablation of the Prostate: A Feasibility Study for the Treatment of Prostate Cancer and Benign Prostatic Hyperplasia. Urology 2008. [DOI: 10.1016/j.urology.2008.08.057] [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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24
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Domingos RF, Huidobro C, Companys E, Galceran J, Puy J, Pinheiro J. Comparison of AGNES (absence of gradients and Nernstian equilibrium stripping) and SSCP (scanned stripping chronopotentiometry) for trace metal speciation analysis. J Electroanal Chem (Lausanne) 2008. [DOI: 10.1016/j.jelechem.2008.02.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Galceran J, Huidobro C, Companys E, Alberti G. AGNES: A technique for determining the concentration of free metal ions. The case of Zn(II) in coastal Mediterranean seawater. Talanta 2007; 71:1795-803. [DOI: 10.1016/j.talanta.2006.08.027] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2006] [Revised: 08/04/2006] [Accepted: 08/21/2006] [Indexed: 10/24/2022]
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Abstract
BACKGROUND AND PURPOSE We have examined a new technique for the thermal treatment of prostate cancer involving the percutaneous placement of small magnetic alloy rods into the gland in a procedure analogous to the placement of permanent brachytherapy seeds. When the patient and the implanted rods are placed in an extracorporeal alternating magnetic field, the rods heat and can produce tissue necrosis. The rods are temperature self-regulating and produce temperatures no higher than their preprogrammed regulation value. The rods are biocompatable permanent implants, comprised of cobalt and palladium. MATERIALS AND METHODS We examined rods that heat to 55 degrees, 60 degrees, and 70 degrees C. Patients are treated for 1-hour sessions and easily have multiple sessions. RESULTS Isolated rods produced little or asymmetrical necrosis. However, arrays of 70 degrees C rods placed within 1 cm of each other caused consistent necrosis between the rods. The temperature at the edge of the array dropped off quickly, and therefore, the rods can be placed within 2 mm of the capsule even posteriorly near the rectum. CONCLUSIONS Arrays of high-temperature rods can be employed for tissue ablation, while lower-temperature arrays could be used to produce hyperthermia in order to achieve synergism with adjuvant radiation therapy. The technique is applicable in an outpatient setting.
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Affiliation(s)
- R D Tucker
- Department of Pathology, University of Iowa, Iowa City, USA.
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27
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de Kretser DM, Huidobro C, Southwick GJ, Temple-Smith PD. The role of the epididymis in human infertility. J Reprod Fertil Suppl 2000; 53:271-5. [PMID: 10645286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
This review describes the role of the epididymis in human infertility, by analysing the results of epididymovasostomies which confirm that the more distal the site of obstruction the greater the chance of fertility. The use of epididymal spermatozoa for in vitro fertilization (IVF) yielded poor results in contrast to intracytoplasmic sperm injection using either epididymal or testicular spermatozoa. The nature of the pathology causing obstructive azoospermia is examined reviewing in particular the possible role of mercury toxicity in Young's syndrome. This review describes the results of studies that show that the level of obstruction within the epididymis is correlated with the presence of sperm antibodies and distal obstructions are associated with the presence of sperm antibodies. The demonstration that necrozoospermia decreases with increased sperm transport through the epididymis, when combined with the observation of normal testicular sperm morphology, represents the basis for the disorder termed epididymal necrozoospermia. However, to date the nature of the epididymal pathology causing this disorder remains obscure.
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Affiliation(s)
- D M de Kretser
- Institute of Reproduction and Development, Monash University, Clayton, Victoria, Australia
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Vázquez F, Barón FJ, Cueva JF, Candamio S, Calvo M, Irigoyen A, Huidobro C, López R. Gemcitabine and vinorelbine in advanced non-small cell lung cancer: a phase II trial. Lung Cancer 1998. [DOI: 10.1016/s0169-5002(98)90072-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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