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Ungan G, Pons-Escoda A, Ulinic D, Arús C, Ortega-Martorell S, Olier I, Vellido A, Majós C, Julià-Sapé M. Early pseudoprogression and progression lesions in glioblastoma patients are both metabolically heterogeneous. NMR Biomed 2024; 37:e5095. [PMID: 38213096 DOI: 10.1002/nbm.5095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 11/06/2023] [Accepted: 12/01/2023] [Indexed: 01/13/2024]
Abstract
The standard treatment in glioblastoma includes maximal safe resection followed by concomitant radiotherapy plus chemotherapy and adjuvant temozolomide. The first follow-up study to evaluate treatment response is performed 1 month after concomitant treatment, when contrast-enhancing regions may appear that can correspond to true progression or pseudoprogression. We retrospectively evaluated 31 consecutive patients at the first follow-up after concomitant treatment to check whether the metabolic pattern assessed with multivoxel MRS was predictive of treatment response 2 months later. We extracted the underlying metabolic patterns of the contrast-enhancing regions with a blind-source separation method and mapped them over the reference images. Pattern heterogeneity was calculated using entropy, and association between patterns and outcomes was measured with Cramér's V. We identified three distinct metabolic patterns-proliferative, necrotic, and responsive, which were associated with status 2 months later. Individually, 70% of the patients showed metabolically heterogeneous patterns in the contrast-enhancing regions. Metabolic heterogeneity was not related to the regions' size and only stable patients were less heterogeneous than the rest. Contrast-enhancing regions are also metabolically heterogeneous 1 month after concomitant treatment. This could explain the reported difficulty in finding robust pseudoprogression biomarkers.
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Affiliation(s)
- Gülnur Ungan
- Centro de Investigación Biomédica en Red (CIBER), Madrid, Spain
- Departament de Bioquímica i Biologia Molecular and Institut de Biotecnologia i Biomedicina (IBB), Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - Albert Pons-Escoda
- Grup de Neuro-oncologia, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Hospital Universitari de Bellvitge, Barcelona, Spain
| | - Daniel Ulinic
- Departament de Bioquímica i Biologia Molecular and Institut de Biotecnologia i Biomedicina (IBB), Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - Carles Arús
- Centro de Investigación Biomédica en Red (CIBER), Madrid, Spain
- Departament de Bioquímica i Biologia Molecular and Institut de Biotecnologia i Biomedicina (IBB), Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | | | - Ivan Olier
- Data Science Research Centre, Liverpool John Moores University (LJMU), Liverpool, UK
| | - Alfredo Vellido
- Centro de Investigación Biomédica en Red (CIBER), Madrid, Spain
- IDEAI-UPC Research Center, UPC BarcelonaTech, Barcelona, Spain
| | - Carles Majós
- Centro de Investigación Biomédica en Red (CIBER), Madrid, Spain
- Grup de Neuro-oncologia, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Hospital Universitari de Bellvitge, Barcelona, Spain
| | - Margarida Julià-Sapé
- Centro de Investigación Biomédica en Red (CIBER), Madrid, Spain
- Departament de Bioquímica i Biologia Molecular and Institut de Biotecnologia i Biomedicina (IBB), Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
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Barnés-Guirado M, Stchigel AM, Cano-Lira JF. A New Genus of the Microascaceae (Ascomycota) Family from a Hypersaline Lagoon in Spain and the Delimitation of the Genus Wardomyces. J Fungi (Basel) 2024; 10:236. [PMID: 38667907 PMCID: PMC11051006 DOI: 10.3390/jof10040236] [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: 02/13/2024] [Revised: 03/18/2024] [Accepted: 03/19/2024] [Indexed: 04/28/2024] Open
Abstract
The Saladas de Sástago-Bujaraloz is an endorheic and arheic complex of lagoons located in the Ebro Basin and protected by the Ramsar Convention on Wetlands. Due to the semi-arid climate of the region and the high salinity of their waters, these lagoons constitute an extreme environment. We surveyed the biodiversity of salt-tolerant and halophilic fungi residents of the Laguna de Pito, a lagoon belonging to this complex. Therefore, we collected several samples of water, sediments, and soil of the periphery. Throughout the study, we isolated 21 fungal species, including a strain morphologically related to the family Microascaceae. However, this strain did not morphologically match any of genera within this family. After an in-depth morphological characterization and phylogenetic analysis using a concatenated sequence dataset of four phylogenetically informative molecular markers (the internal transcribed spacer region (ITS) of the nuclear ribosomal DNA (nrDNA); the D1-D2 domains of the 28S gene of the nuclear ribosomal RNA (LSU); and a fragment of the translation elongation factor 1-alpha (EF-1α) and the β-tubulin (tub2) genes), we established the new genus Dactyliodendromyces, with Dactyliodendromyces holomorphus as its species. Additionally, as a result of our taxonomic study, we reclassified the paraphyletic genus Wardomyces into three different genera: Wardomyces sensu stricto, Parawardomyces gen. nov., and Pseudowardomyces gen. nov., with Parawardomyces ovalis (formerly Wardomyces ovalis) and Pseudowardomyces humicola (formerly Wardomyces humicola) as the type species of their respective genera. Furthermore, we propose new combinations, including Parawardomyces giganteus (formerly Wardomyces giganteus) and Pseudowardomyces pulvinatus (formerly Wardomyces pulvinatus).
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Affiliation(s)
| | - Alberto Miguel Stchigel
- Mycology Unit, Medical School, Universitat Rovira i Virgili, C/Sant Llorenç 21, 43201 Reus, Spain; (M.B.-G.); (J.F.C.-L.)
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Noori Z, Malekzadeh A, Poater J. Brownmillerite Calcium Ferrite, a Promising Perovskite-Related Material in the Degradation of a Tight Dye under Ambient Conditions. ChemistryOpen 2024; 13:e202300169. [PMID: 38051941 PMCID: PMC10962484 DOI: 10.1002/open.202300169] [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: 08/22/2023] [Revised: 10/20/2023] [Indexed: 12/07/2023] Open
Abstract
Evaluation of effective and low-cost materials as catalysts to combat the threat of pollution is a significant and growing trend. With this aim, we have synthesized calcium ferrite brownmillerite by wet preparation approach as a catalyst for pollution. The structural analysis is established by the X-ray diffraction of Ca2 Fe2 O5 , whereas the tetrahedral and octahedral sites band stretching for ferrite specimen has been deduced using FTIR. The bandgap energy has been estimated by the Tauc relation (2.17 eV). Ca2 Fe2 O5 brownmillerite exhibits a BET surface area of 10 m2 /g and a BJH pore volume of 0.121 cm3 /g with the average particle size of 70 nm. Importantly, the alizarin Red S dye degradation has been studied using the prepared ferrite catalyst, under dark ambient conditions and without the presence of any acidic or basic additives. Degradation is also supported by both FTIR and TOC analysis. Surface properties of brownmillerite Ca2 Fe2 O5 have been characterized using electronic spectroscopy and CO2 temperature programmed desorption (TPD) analysis and revealed that the basic surface of brownmillerite Ca2 Fe2 O5 offers active sites that are suitable for degradation processes. All results show that the preparation of brownmillerite Ca2 Fe2 O5 via the Pechini method is suitable to produce fine surfaces and pores with nanosized particles.
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Affiliation(s)
- Zahra Noori
- School of ChemistryDamghan UniversityDamghan367126/41167Iran
- Departament de Química Inorgànica i Orgànica & IQTCUBUniversitat de BarcelonaMartí i Franquès 1–1108028BarcelonaSpain
| | - Azim Malekzadeh
- School of ChemistryDamghan UniversityDamghan367126/41167Iran
| | - Jordi Poater
- Departament de Química Inorgànica i Orgànica & IQTCUBUniversitat de BarcelonaMartí i Franquès 1–1108028BarcelonaSpain
- ICREAPasseig Lluís Companys 2308010BarcelonaSpain
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4
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Rodríguez JJ, Zallo F, Gardenal E, Cabot J, Busquets X. Entorhinal cortex astrocytic atrophy in human frontotemporal dementia. Brain Struct Funct 2024:10.1007/s00429-024-02763-x. [PMID: 38308043 DOI: 10.1007/s00429-024-02763-x] [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: 09/26/2023] [Accepted: 01/11/2024] [Indexed: 02/04/2024]
Abstract
The pathophysiology of Fronto Temporal Dementia (FTD) remains poorly understood, specifically the role of astroglia. Our aim was to explore the hypothesis of astrocytic alterations as a component for FTD pathophysiology. We performed an in-depth tri-dimensional (3-D) anatomical and morphometric study of glial fibrillary acidic protein (GFAP)-positive and glutamine synthetase (GS)-positive astrocytes in the human entorhinal cortex (EC) of FTD patients. The studies at this level in the different types of human dementia are scarce. We observed a prominent astrocyte atrophy of GFAP-positive astrocytes and co-expressing GFAP/GS astrocytes, characterised by a decrease in area and volume, whilst minor changes in GS-positive astrocytes in FTD compared to non-dementia controls (ND) samples. This study evidences the importance of astrocyte atrophy and dysfunction in human EC. We hypothesise that FTD is not only a neuropathological disease, but also a gliopathological disease having a major relevance in the understanding the astrocyte role in FTD pathological processes and development.
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Affiliation(s)
- J J Rodríguez
- Functional Neuroanatomy Group; IKERBASQUE, Basque Foundation for Science, 48009, Bilbao, Spain.
- Dept. of Neurosciences, Medical Faculty, University of the Basque Country (UPV/EHU), 48940, Leioa, Spain.
| | - F Zallo
- Functional Neuroanatomy Group; IKERBASQUE, Basque Foundation for Science, 48009, Bilbao, Spain
- Dept. of Neurosciences, Medical Faculty, University of the Basque Country (UPV/EHU), 48940, Leioa, Spain
| | - E Gardenal
- Functional Neuroanatomy Group; IKERBASQUE, Basque Foundation for Science, 48009, Bilbao, Spain
- Dept. of Neurosciences, Medical Faculty, University of the Basque Country (UPV/EHU), 48940, Leioa, Spain
| | - J Cabot
- Laboratory of Molecular Cell Biomedicine, Department of Biology, University of the Balearic Islands, 07122, Palma, Spain
| | - X Busquets
- Laboratory of Molecular Cell Biomedicine, Department of Biology, University of the Balearic Islands, 07122, Palma, Spain
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5
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Peinado V, Valiente C, Contreras A, Trucharte A, Butter S, Murphy J, Shevlin M. ICD-11 prolonged grief disorder: Prevalence, predictors, and co-occurrence in a large representative sample. Int J Psychol 2024; 59:86-95. [PMID: 37828650 DOI: 10.1002/ijop.12951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 09/19/2023] [Indexed: 10/14/2023]
Abstract
The International Classification of Diseases has recently defined Prolonged Grief Disorder (PGD) with symptoms such as longing, worry, and intense emotional pain that exceed sociocultural norms more than 6 months after the loss. This study aims to (a) estimate the prevalence of this new diagnostic category, (b) identify its sociodemographic and loss-related predictors, and (c) assess the co-occurrence of PGD with other psychological disorders and substance abuse. A large representative sample of Spanish adults (N = 1498) participated. Several multivariate binary logistic regression and multivariate logistic regression models were used. Results showed a 9.95% prevalence in the total sample. Catholic beliefs were a positive predictor, while higher income and more time since loss significantly decreased the odds of PGD. PGD significantly increased the likelihood of anxiety, depression, somatisation, post-traumatic stress disorder, loneliness and substance use. Our study contributes to assessing the multicultural PGD validity, as our results from a large representative sample are comparable to those in other countries with the PGDS. Our findings have direct implications for the assessment and treatment of bereavement, identifying for practitioners variables that make individuals more vulnerable to PGD. Results highlighted the high co-occurrence of PGD with other psychological illnesses and increased drug use.
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Affiliation(s)
- Vanesa Peinado
- Facultad de Psicología Clínica, Universidad Complutense de Madrid, Madrid, Spain
| | - Carmen Valiente
- Facultad de Psicología Clínica, Universidad Complutense de Madrid, Madrid, Spain
| | - Alba Contreras
- Departamento de Psicología, Facultad de Medicina, Universidad Católica San Antonio de Murcia, Murcia, Spain
| | - Almudena Trucharte
- Departamento de Psicología, Facultad de Salud, Universidad Camilo José Cela, Madrid, Spain
| | - Sarah Butter
- School of Psychology, Ulster University, Coleraine, UK
| | - Jamie Murphy
- School of Psychology, Ulster University, Coleraine, UK
| | - Mark Shevlin
- School of Psychology, Ulster University, Coleraine, UK
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6
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Leiba J, Sipka T, Begon-Pescia C, Bernardello M, Tairi S, Bossi L, Gonzalez AA, Mialhe X, Gualda EJ, Loza-Alvarez P, Blanc-Potard A, Lutfalla G, Nguyen-Chi ME. Dynamics of macrophage polarization support Salmonella persistence in a whole living organism. eLife 2024; 13:e89828. [PMID: 38224094 PMCID: PMC10830131 DOI: 10.7554/elife.89828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 01/14/2024] [Indexed: 01/16/2024] Open
Abstract
Numerous intracellular bacterial pathogens interfere with macrophage function, including macrophage polarization, to establish a niche and persist. However, the spatiotemporal dynamics of macrophage polarization during infection within host remain to be investigated. Here, we implement a model of persistent Salmonella Typhimurium infection in zebrafish, which allows visualization of polarized macrophages and bacteria in real time at high resolution. While macrophages polarize toward M1-like phenotype to control early infection, during later stages, Salmonella persists inside non-inflammatory clustered macrophages. Transcriptomic profiling of macrophages showed a highly dynamic signature during infection characterized by a switch from pro-inflammatory to anti-inflammatory/pro-regenerative status and revealed a shift in adhesion program. In agreement with this specific adhesion signature, macrophage trajectory tracking identifies motionless macrophages as a permissive niche for persistent Salmonella. Our results demonstrate that zebrafish model provides a unique platform to explore, in a whole organism, the versatile nature of macrophage functional programs during bacterial acute and persistent infections.
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Affiliation(s)
- Jade Leiba
- LPHI, Université de Montpellier, CNRS, INSERMMontpellierFrance
| | - Tamara Sipka
- LPHI, Université de Montpellier, CNRS, INSERMMontpellierFrance
| | | | - Matteo Bernardello
- ICFO - Institute of Photonic Sciences, The Barcelona Institute of Science and TechnologyCastelldefels, BarcelonaSpain
| | - Sofiane Tairi
- LPHI, Université de Montpellier, CNRS, INSERMMontpellierFrance
| | - Lionello Bossi
- Institute for Integrative Biology of the Cell-I2BC, Université Paris-Saclay, CEA, CNRSGif-sur-YvetteFrance
| | - Anne-Alicia Gonzalez
- MGX-Montpellier GenomiX, Université de Montpellier, CNRS, INSERMMontpellierFrance
| | - Xavier Mialhe
- MGX-Montpellier GenomiX, Université de Montpellier, CNRS, INSERMMontpellierFrance
| | - Emilio J Gualda
- ICFO - Institute of Photonic Sciences, The Barcelona Institute of Science and TechnologyCastelldefels, BarcelonaSpain
| | - Pablo Loza-Alvarez
- ICFO - Institute of Photonic Sciences, The Barcelona Institute of Science and TechnologyCastelldefels, BarcelonaSpain
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Trapote E, Moreno-González V, Canestrari D, Rutz C, Baglione V. Fitness benefits of alternated chick provisioning in cooperatively breeding carrion crows. J Anim Ecol 2024; 93:95-108. [PMID: 38078562 DOI: 10.1111/1365-2656.14033] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 10/23/2023] [Indexed: 01/11/2024]
Abstract
In most bird species, parents raise offspring cooperatively. In some cases, this cooperation extends to helpers-at-the-nest who assist the breeders with a range of tasks. While cooperative food provisioning might merely arise incidentally, as a result of the efforts of carers that act independently from each other, recent studies suggest that birds may coordinate by taking turns in visiting the nest. However, evidence that such coordination emerges because individuals actively respond to each other's behaviour is controversial, and the potential benefits of carers' alternation remain unknown. We addressed this knowledge gap by analysing a multiyear dataset for cooperatively breeding carrion crows Corvus corone, comprising 8693 nest visits across 50 groups. Our results reveal that turn-taking does occur in this species and that all group members, regardless of their sex and social role (breeder/helper), tend to alternate at the nest with other carers rather than to make repeat visits. Importantly, we found that the body mass of nestlings increased significantly with the degree of carers' alternation, possibly because well-coordinated groups provided food at more regular intervals. Using earlier monitoring data, the observed increase in body mass is predicted to substantially boost postfledging survival rates. Our analyses demonstrate that alternation in nestling provisioning has measurable fitness benefits in this study system. This raises the possibility that cooperatively breeding carrion crows, as well as other bird species with similarly coordinated brood provisioning, exhibit specialized behavioural strategies that enable effective alternation.
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Affiliation(s)
- Eva Trapote
- Departamento de Biodiversidad y Gestión Ambiental, Universidad de León, León, Spain
| | | | - Daniela Canestrari
- Departamento de Biodiversidad y Gestión Ambiental, Universidad de León, León, Spain
| | - Christian Rutz
- Centre for Biological Diversity, School of Biology, University of St Andrews, St Andrews, UK
| | - Vittorio Baglione
- Departamento de Biodiversidad y Gestión Ambiental, Universidad de León, León, Spain
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Mercader Ruiz J, Beitia M, Delgado D, Sánchez P, Guadilla J, Pérez de Arrilucea C, Benito-Lopez F, Basabe-Desmonts L, Sánchez M. Method Based on Ultrafiltration to Obtain a Plasma Rich in Platelet and Plasma Growth Factors. J Clin Med 2023; 12:5941. [PMID: 37762883 PMCID: PMC10532222 DOI: 10.3390/jcm12185941] [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: 08/04/2023] [Revised: 08/30/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023] Open
Abstract
Platelet-Rich Plasma (PRP) is an autologous biological product which, due to its regenerative capacity, is currently used in different fields of medicine. This biological treatment has proven to be effective in numerous research studies due to its high content of growth factors released by platelets. However, the current systems used to obtain PRP do not enrich the growth factors and cytokines outside platelets. Considering this, the present work aims to develop a new technique by which all the biomolecules present in plasma are enriched. Thus, a new method based on ultrafiltration has been developed for the obtaining of the novel PRP. By this method, ultrafiltration of the plasma water is carried out using a 3KDa filtering unit. The results showed that the technique was able to concentrate extraplatelet factors, such as IGF-1 and HGF, in contrast with conventional plasmas. Thus, the cultured cells responded with increased viability to this new PRP. These results could provide a new approach to the treatment of injuries requiring regenerative medicine, potentially improving the outcomes of the conventional PRPs.
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Affiliation(s)
- Jon Mercader Ruiz
- Arthroscopic Surgery Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (J.M.R.); (P.S.); (J.G.); (C.P.d.A.)
- Microfluidics Cluster UPV/EHU, BIOMICs Microfluidics Group, Lascaray Research Center, University of the Basque Country UPV/EHU, 01006 Vitoria-Gasteiz, Spain
| | - Maider Beitia
- Advanced Biological Therapy Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (M.B.); (D.D.)
| | - Diego Delgado
- Advanced Biological Therapy Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (M.B.); (D.D.)
| | - Pello Sánchez
- Arthroscopic Surgery Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (J.M.R.); (P.S.); (J.G.); (C.P.d.A.)
- Advanced Biological Therapy Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (M.B.); (D.D.)
| | - Jorge Guadilla
- Arthroscopic Surgery Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (J.M.R.); (P.S.); (J.G.); (C.P.d.A.)
| | - Cristina Pérez de Arrilucea
- Arthroscopic Surgery Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (J.M.R.); (P.S.); (J.G.); (C.P.d.A.)
| | - Fernando Benito-Lopez
- Microfluidics Cluster UPV/EHU, Analytical Microsystems & Materials for Lab-on-a-Chip (AMMa-LOAC) Group, Analytical Chemistry Department, University of the Basque Country UPV/EHU, 48940 Leioa, Spain;
| | - Lourdes Basabe-Desmonts
- Microfluidics Cluster UPV/EHU, BIOMICs Microfluidics Group, Lascaray Research Center, University of the Basque Country UPV/EHU, 01006 Vitoria-Gasteiz, Spain
- Basque Foundation of Science, IKERBASQUE, 48009 Bilbao, Spain
| | - Mikel Sánchez
- Arthroscopic Surgery Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (J.M.R.); (P.S.); (J.G.); (C.P.d.A.)
- Advanced Biological Therapy Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (M.B.); (D.D.)
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Mercader Ruiz J, Beitia M, Delgado D, Sánchez P, Arnaiz MJ, López de Dicastillo L, Benito-Lopez F, Basabe-Desmonts L, Sánchez M. New Formulation of Platelet-Rich Plasma Enriched in Platelet and Extraplatelet Biomolecules Using Hydrogels. Int J Mol Sci 2023; 24:13811. [PMID: 37762114 PMCID: PMC10530784 DOI: 10.3390/ijms241813811] [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: 08/10/2023] [Revised: 09/05/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
Platelet-rich plasma (PRP) is an autologous biologic product used in several fields of medicine for tissue repair due to the regenerative capacity of the biomolecules of its formulation. PRP consists of a plasma with a platelet concentration higher than basal levels but with basal levels of any biomolecules present out of the platelets. Plasma contains extraplatelet biomolecules known to enhance its regenerative properties. Therefore, a PRP containing not only a higher concentration of platelets but also a higher concentration of extraplatelet biomolecules that could have a stronger regenerative performance than a standard PRP. Considering this, the aim of this work is to develop a new method to obtain PRP enriched in both platelet and extraplatelet molecules. The method is based on the absorption of the water of the plasma using hydroxyethyl acrylamide (HEAA)-based hydrogels. A plasma fraction obtained from blood, containing the basal levels of platelets and proteins, was placed in contact with the HEAA hydrogel powder to absorb half the volume of the water. The resulting plasma was characterized, and its bioactivity was analyzed in vitro. The novel PRP (nPRP) showed a platelet concentration and platelet derived growth factor (PDGF) levels similar to the standard PRP (sPRP), but the concentration of the extraplatelet growth factors IGF-1 (p < 0.0001) and HGF (p < 0.001) were significantly increased. Additionally, the cells exposed to the nPRP showed increased cell viability than those exposed to a sPRP in human dermal fibroblasts (p < 0.001) and primary chondrocytes (p < 0.01). In conclusion, this novel absorption-based method produces a PRP with novel characteristics compared to the standard PRPs, with promising in vitro results that could potentially trigger improved tissue regeneration capacity.
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Affiliation(s)
- Jon Mercader Ruiz
- Arthroscopic Surgery Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (J.M.R.); (P.S.); (M.J.A.); (L.L.d.D.)
- Microfluidics Cluster UPV/EHU, BIOMICs Microfluidics Group, Lascaray Research Center, University of the Basque Country UPV/EHU, 01006 Vitoria-Gasteiz, Spain
| | - Maider Beitia
- Advanced Biological Therapy Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (M.B.); (D.D.)
| | - Diego Delgado
- Advanced Biological Therapy Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (M.B.); (D.D.)
| | - Pello Sánchez
- Arthroscopic Surgery Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (J.M.R.); (P.S.); (M.J.A.); (L.L.d.D.)
- Advanced Biological Therapy Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (M.B.); (D.D.)
| | - María Jesús Arnaiz
- Arthroscopic Surgery Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (J.M.R.); (P.S.); (M.J.A.); (L.L.d.D.)
| | - Leonor López de Dicastillo
- Arthroscopic Surgery Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (J.M.R.); (P.S.); (M.J.A.); (L.L.d.D.)
| | - Fernando Benito-Lopez
- Microfluidics Cluster UPV/EHU, Analytical Microsystems & Materials for Lab-on-a-Chip (AMMa-LOAC) Group, Analytical Chemistry Department, University of the Basque Country UPV/EHU, 48940 Leioa, Spain;
| | - Lourdes Basabe-Desmonts
- Microfluidics Cluster UPV/EHU, BIOMICs Microfluidics Group, Lascaray Research Center, University of the Basque Country UPV/EHU, 01006 Vitoria-Gasteiz, Spain
- Basque Foundation of Science, IKERBASQUE, 48009 Bilbao, Spain
| | - Mikel Sánchez
- Arthroscopic Surgery Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (J.M.R.); (P.S.); (M.J.A.); (L.L.d.D.)
- Advanced Biological Therapy Unit, Hospital Vithas Vitoria, 01008 Vitoria-Gasteiz, Spain; (M.B.); (D.D.)
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10
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Xing C, Yang L, He R, Spadaro MC, Zhang Y, Arbiol J, Li J, Poudel B, Nozariasbmarz A, Li W, Lim KH, Liu Y, Llorca J, Cabot A. Brookite TiO 2 Nanorods as Promising Electrochromic and Energy Storage Materials for Smart Windows. Small 2023:e2303639. [PMID: 37608461 DOI: 10.1002/smll.202303639] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 07/15/2023] [Indexed: 08/24/2023]
Abstract
Electrochromic smart windows (ESWs) offer an attractive option for regulating indoor lighting conditions. Electrochromic materials based on ion insertion/desertion mechanisms also present the possibility for energy storage, thereby increasing overall energy efficiency and adding value to the system. However, current electrochromic electrodes suffer from performance degradation, long response time, and low coloration efficiency. This work aims to produce defect-engineered brookite titanium dioxide (TiO2 ) nanorods (NRs) with different lengths and investigate their electrochromic performance as potential energy storage materials. The controllable synthesis of TiO2 NRs with inherent defects, along with smaller impedance and higher carrier concentrations, significantly enhances their electrochromic performance, including improved resistance to degradation, shorter response times, and enhanced coloration efficiency. The electrochromic performance of TiO2 NRs, particularly longer ones, is characterized by fast switching speeds (20 s for coloration and 12 s for bleaching), high coloration efficiency (84.96 cm2 C-1 at a 600 nm wavelength), and good stability, highlighting their potential for advanced electrochromic smart window applications based on Li+ ion intercalation.
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Affiliation(s)
- Congcong Xing
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
- Catalonia Institute for Energy Research (IREC), Sant Adrià de Besòs, Barcelona, 08930, Spain
- Institute of Energy Technologies, Department of Chemical Engineering and Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, EEBE, Barcelona, 08019, Spain
| | - Linlin Yang
- Catalonia Institute for Energy Research (IREC), Sant Adrià de Besòs, Barcelona, 08930, Spain
- Departament d'Enginyeria Electronica i Biomedica, Universitat de Barcelona, Barcelona, 08028, Spain
| | - Ren He
- Catalonia Institute for Energy Research (IREC), Sant Adrià de Besòs, Barcelona, 08930, Spain
- Departament d'Enginyeria Electronica i Biomedica, Universitat de Barcelona, Barcelona, 08028, Spain
| | - Maria Chiara Spadaro
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, Barcelona, 08193, Spain
| | - Yu Zhang
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
- Catalonia Institute for Energy Research (IREC), Sant Adrià de Besòs, Barcelona, 08930, Spain
| | - Jordi Arbiol
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, Barcelona, 08193, Spain
- ICREA, Pg. Lluis Companys 23, Barcelona, 08010, Spain
| | - Junshan Li
- Institute for Advanced Study, Chengdu University, Chengdu, Sichuan, 610106, China
| | - Bed Poudel
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Amin Nozariasbmarz
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Wenjie Li
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA
| | - Khak Ho Lim
- Institute of Zhejiang University-Quzhou, Quzhou, Zhejiang, 324000, China
| | - Yu Liu
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, China
| | - Jordi Llorca
- Institute of Energy Technologies, Department of Chemical Engineering and Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, EEBE, Barcelona, 08019, Spain
| | - Andreu Cabot
- Catalonia Institute for Energy Research (IREC), Sant Adrià de Besòs, Barcelona, 08930, Spain
- ICREA, Pg. Lluis Companys 23, Barcelona, 08010, Spain
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Teixidor F, Núñez R, Viñas C. Towards the Application of Purely Inorganic Icosahedral Boron Clusters in Emerging Nanomedicine. Molecules 2023; 28:molecules28114449. [PMID: 37298925 DOI: 10.3390/molecules28114449] [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: 04/27/2023] [Revised: 05/21/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
Traditionally, drugs were obtained by extraction from medicinal plants, but more recently also by organic synthesis. Today, medicinal chemistry continues to focus on organic compounds and the majority of commercially available drugs are organic molecules, which can incorporate nitrogen, oxygen, and halogens, as well as carbon and hydrogen. Aromatic organic compounds that play important roles in biochemistry find numerous applications ranging from drug delivery to nanotechnology or biomarkers. We achieved a major accomplishment by demonstrating experimentally/theoretically that boranes, carboranes, as well as metallabis(dicarbollides), exhibit global 3D aromaticity. Based on the stability-aromaticity relationship, as well as on the progress made in the synthesis of derivatized clusters, we have opened up new applications of boron icosahedral clusters as key components in the field of novel healthcare materials. In this brief review, we present the results obtained at the Laboratory of Inorganic Materials and Catalysis (LMI) of the Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) with icosahedral boron clusters. These 3D geometric shape clusters, the semi-metallic nature of boron and the presence of exo-cluster hydrogen atoms that can interact with biomolecules through non-covalent hydrogen and dihydrogen bonds, play a key role in endowing these compounds with unique properties in largely unexplored (bio)materials.
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Affiliation(s)
- Francesc Teixidor
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, 08193 Bellaterra, Spain
| | - Rosario Núñez
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, 08193 Bellaterra, Spain
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, 08193 Bellaterra, Spain
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12
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Vega-Sagardía M, Cabezón EC, Delgado J, Ruiz-Moyano S, Garrido D. Screening Microbial Interactions During Inulin Utilization Reveals Strong Competition and Proteomic Changes in Lacticaseibacillus paracasei M38. Probiotics Antimicrob Proteins 2023:10.1007/s12602-023-10083-5. [PMID: 37227689 DOI: 10.1007/s12602-023-10083-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/02/2023] [Indexed: 05/26/2023]
Abstract
Competition for resources is a common microbial interaction in the gut microbiome. Inulin is a well-studied prebiotic dietary fiber that profoundly shapes gut microbiome composition. Several community members and some probiotics, such as Lacticaseibacillus paracasei, deploy multiple molecular strategies to access fructans. In this work, we screened bacterial interactions during inulin utilization in representative gut microbes. Unidirectional and bidirectional assays were used to evaluate the effects of microbial interactions and global proteomic changes on inulin utilization. Unidirectional assays showed the total or partial consumption of inulin by many gut microbes. Partial consumption was associated with cross-feeding of fructose or short oligosaccharides. However, bidirectional assays showed strong competition from L. paracasei M38 against other gut microbes, reducing the growth and quantity of proteins found in the latter. L. paracasei dominated and outcompeted other inulin utilizers, such as Ligilactobacillus ruminis PT16, Bifidobacterium longum PT4, and Bacteroides fragilis HM714. The importance of strain-specific characteristics of L. paracasei, such as its high fitness for inulin consumption, allows it to be favored for bacterial competence. Proteomic studies indicated an increase in inulin-degrading enzymes in co-cultures, such as β-fructosidase, 6-phosphofructokinase, the PTS D-fructose system, and ABC transporters. These results reveal that intestinal metabolic interactions are strain-dependent and might result in cross-feeding or competition depending on total or partial consumption of inulin. Partial degradation of inulin by certain bacteria favors coexistence. However, when L. paracasei M38 totally degrades the fiber, this does not happen. The synergy of this prebiotic with L. paracasei M38 could determine the predominance in the host as a potential probiotic.
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Affiliation(s)
- Marco Vega-Sagardía
- Department of Chemical and Bioprocess Engineering, School of Engineering, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Santiago, Chile
| | - Eva Cebrián Cabezón
- Facultad de Veterinaria, Higiene y Seguridad Alimentaria, Instituto Universitario de Investigación de Carne y Productos Cárnicos, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003, Cáceres, Spain
| | - Josué Delgado
- Facultad de Veterinaria, Higiene y Seguridad Alimentaria, Instituto Universitario de Investigación de Carne y Productos Cárnicos, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003, Cáceres, Spain
| | - Santiago Ruiz-Moyano
- Departamento de Producción Animal y Ciencia de los Alimentos, Nutrición y Bromatología, Escuela de Ingenierías Agrarias, Universidad de Extremadura, Avda. Adolfo Suárez s/n, 06007, Badajoz, Spain.
- Instituto Universitario de Investigación de Recursos Agrarios (INURA), Universidad de Extremadura, Avda. de la Investigación s/n, Campus Universitario, 06006, Badajoz, Spain.
| | - Daniel Garrido
- Department of Chemical and Bioprocess Engineering, School of Engineering, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Santiago, Chile.
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Balcaza VG, Bosman DF, Badal A, Von Barnekow A, O'Connor U, Camp A, López JA, Ginjaume M, Duch MA. PyMCGPU-IR Monte Carlo code test for occupational dosimetry. Radiat Prot Dosimetry 2023; 199:730-735. [PMID: 37225195 DOI: 10.1093/rpd/ncad072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
PyMCGPU-IR is an innovative occupational dose monitoring tool for interventional radiology procedures. It reads the radiation data from the Radiation Dose Structured Report of the procedure and combines this information with the position of the monitored worker recorded using a 3D camera system. This information is used as an input file for the fast Monte Carlo radiation transport code MCGPU-IR in order to assess the organ doses, Hp(10) and Hp(0.07), as well as the effective dose. In this study, Hp(10) measurements of the first operator during an endovascular aortic aneurysm repair procedure and a coronary angiography using a ceiling suspended shield are compared to PyMCGPU-IR calculations. Differences in the two reported examples are found to be within 15%, which is considered as being very satisfactory. The study highlights the promising advantages of PyMCGPU-IR, although there are still several improvements that need to be implemented before its final clinical use.
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Affiliation(s)
- Víctor García Balcaza
- Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
- Research Centre for Biomedical Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
| | - David Fernández Bosman
- Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
| | - Andreu Badal
- Division of Imaging, Diagnostics, and Software Reliability, OSEL, CDRH, U.S. Food and Drug Administration, Silver Spring, MD, United States
| | - Ariel Von Barnekow
- Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
- Research Centre for Biomedical Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
| | - Una O'Connor
- Medical Physics and Bioengineering Department, St. James's Hospital, Dublin, Ireland
| | - Anna Camp
- Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
- Research Centre for Biomedical Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
| | - Joan Aranda López
- Research Centre for Biomedical Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
| | - Mercè Ginjaume
- Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
- Research Centre for Biomedical Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
| | - María Amor Duch
- Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
- Research Centre for Biomedical Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
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14
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Hinojosa MG, Cascajosa-Lira A, Prieto AI, Gutiérrez-Praena D, Vasconcelos V, Jos A, Cameán AM. Cytotoxic Effects and Oxidative Stress Produced by a Cyanobacterial Cylindrospermopsin Producer Extract versus a Cylindrospermopsin Non-Producing Extract on the Neuroblastoma SH-SY5Y Cell Line. Toxins (Basel) 2023; 15:toxins15050320. [PMID: 37235355 DOI: 10.3390/toxins15050320] [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: 03/21/2023] [Revised: 04/27/2023] [Accepted: 05/03/2023] [Indexed: 05/28/2023] Open
Abstract
The incidence and interest of cyanobacteria are increasing nowadays because they are able to produce some toxic secondary metabolites known as cyanotoxins. Among them, the presence of cylindrospermopsin (CYN) is especially relevant, as it seems to cause damage at different levels in the organisms: the nervous system being the one most recently reported. Usually, the effects of the cyanotoxins are studied, but not those exerted by cyanobacterial biomass. The aim of the present study was to assess the cytotoxicity and oxidative stress generation of one cyanobacterial extract of R. raciborskii non-containing CYN (CYN-), and compare its effects with those exerted by a cyanobacterial extract of C. ovalisporum containing CYN (CYN+) in the human neuroblastoma SH-SY5Y cell line. Moreover, the analytical characterization of potential cyanotoxins and their metabolites that are present in both extracts of these cultures was also carried out using Ultrahigh Performance Liquid Chromatography-Mass Spectrometry, in tandem (UHPLC-MS/MS). The results show a reduction of cell viability concentration- and time-dependently after 24 and 48 h of exposure with CYN+ being five times more toxic than CYN-. Furthermore, the reactive oxygen species (ROS) increased with time (0-24 h) and CYN concentration (0-1.11 µg/mL). However, this rise was only obtained after the highest concentrations and times of exposure to CYN-, while this extract also caused a decrease in reduced glutathione (GSH) levels, which might be an indication of the compensation of the oxidative stress response. This study is the first one performed in vitro comparing the effects of CYN+ and CYN-, which highlights the importance of studying toxic features in their natural scenario.
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Affiliation(s)
- María G Hinojosa
- Area of Toxicología, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
| | - Antonio Cascajosa-Lira
- Area of Toxicología, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
| | - Ana I Prieto
- Area of Toxicología, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
| | - Daniel Gutiérrez-Praena
- Area of Toxicología, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
| | - Vitor Vasconcelos
- CIIMAR/CIMAR-Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, 4450-159 Matosinhos, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - Angeles Jos
- Area of Toxicología, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
| | - Ana M Cameán
- Area of Toxicología, Faculty of Pharmacy, Universidad de Sevilla, C/Profesor García González 2, 41012 Seville, Spain
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15
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Martín-Hernanz S, Nogales M, Valente L, Fernández-Mazuecos M, Pomeda-Gutiérrez F, Cano E, Marrero P, Olesen JM, Heleno R, Vargas P. Time-calibrated phylogenies reveal mediterranean and pre-mediterranean origin of the thermophilous vegetation of the Canary Islands. Ann Bot 2023; 131:667-684. [PMID: 36594263 PMCID: PMC10147335 DOI: 10.1093/aob/mcac160] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 12/21/2022] [Indexed: 05/20/2023]
Abstract
BACKGROUND AND AIMS The Canary Islands have strong floristic affinities with the Mediterranean Basin. One of the most characteristic and diverse vegetation belts of the archipelago is the thermophilous woodland (between 200 and 900 m.a.s.l.). This thermophilous plant community consists of many non-endemic species shared with the Mediterranean Floristic Region together with Canarian endemic species. Consequently, phytogeographic studies have historically proposed the hypothesis of an origin of the Canarian thermophilous species following the establishment of the summer-dry mediterranean climate in the Mediterranean Basin around 2.8 million years ago. METHODS Time-calibrated phylogenies for 39 plant groups including Canarian thermophilous species were primarily analysed to infer colonization times. In particular, we used 26 previously published phylogenies together with 13 new time-calibrated phylogenies (including newly generated plastid and nuclear DNA sequence data) to assess whether the time interval between stem and crown ages of Canarian thermophilous lineages postdates 2.8 Ma. For lineages postdating this time threshold, we additionally conducted ancestral area reconstructions to infer the potential source area for colonization. KEY RESULTS A total of 43 Canarian thermophilous lineages were identified from 39 plant groups. Both mediterranean (16) and pre-mediterranean (9) plant lineages were found. However, we failed to determine the temporal origin for 18 lineages because a stem-crown time interval overlaps with the 2.8-Ma threshold. The spatial origin of thermophilous lineages was also heterogeneous, including ancestral areas from the Mediterranean Basin (nine) and other regions (six). CONCLUSIONS Our findings reveal an unexpectedly heterogeneous origin of the Canarian thermophilous species in terms of colonization times and mainland source areas. A substantial proportion of the lineages arrived in the Canaries before the summer-dry climate was established in the Mediterranean Basin. The complex temporal and geographic origin of Canarian thermophilous species challenges the view of the Canary Islands (and Madeira) as a subregion within the Mediterranean Floristic Region.
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Affiliation(s)
- Sara Martín-Hernanz
- Department of Biodiversity and Conservation, Real Jardín Botánico de Madrid (RJB-CSIC), 28014 Madrid, Spain
- Departament of Plant Biology and Ecology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Sevilla, Spain
| | - Manuel Nogales
- Island Ecology and Evolution Research Group, Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), 38206 San Cristóbal de La Laguna, Tenerife, Canary Islands, Spain
| | - Luis Valente
- Naturalis Biodiversity Center, 2333 Leiden, The Netherlands
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, 9700 AB Groningen, The Netherlands
| | - Mario Fernández-Mazuecos
- Department of Biology (Botany), Faculty of Sciences, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Fernando Pomeda-Gutiérrez
- Department of Biodiversity and Conservation, Real Jardín Botánico de Madrid (RJB-CSIC), 28014 Madrid, Spain
| | - Emilio Cano
- Department of Biodiversity and Conservation, Real Jardín Botánico de Madrid (RJB-CSIC), 28014 Madrid, Spain
| | - Patricia Marrero
- Department of Biodiversity and Conservation, Real Jardín Botánico de Madrid (RJB-CSIC), 28014 Madrid, Spain
- Island Ecology and Evolution Research Group, Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), 38206 San Cristóbal de La Laguna, Tenerife, Canary Islands, Spain
| | - Jens M Olesen
- Department of Biology, Aarhus University, 8000 Aarhus C, Denmark
| | - Ruben Heleno
- Centre for Functional Ecology, TERRA Associate Laboratory, Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal
| | - Pablo Vargas
- Department of Biodiversity and Conservation, Real Jardín Botánico de Madrid (RJB-CSIC), 28014 Madrid, Spain
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Díaz-Puertas R, Rodríguez-Cañas E, Bello-Perez M, Fernández-Oliver M, Mallavia R, Falco A. Viricidal Activity of Thermoplastic Polyurethane Materials with Silver Nanoparticles. Nanomaterials (Basel) 2023; 13:nano13091467. [PMID: 37177014 PMCID: PMC10180066 DOI: 10.3390/nano13091467] [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] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/16/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023]
Abstract
The use of diverse Ag-based nanoparticulated forms has shown promising results in controlling viral propagation. In this study, a commercial nanomaterial consisting of ceramic-coated silver nanoparticles (AgNPs) was incorporated into thermoplastic polyurethane (TPU) plates using an industrial protocol, and the surface composition, ion-release dynamics and viricidal properties were studied. The surface characterization by FESEM-EDX revealed that the molar composition of the ceramic material was 5.5 P:3.3 Mg:Al and facilitated the identification of the embedded AgNPs (54.4 ± 24.9 nm). As determined by ICPMS, the release rates from the AgNP-TPU into aqueous solvents were 4 ppm/h for Ag and Al, and 28.4 ppm/h for Mg ions. Regarding the biological assays, the AgNP-TPU material did not induce significant cytotoxicity in the cell lines employed. Its viricidal activity was characterized, based on ISO 21702:2019, using the Spring viraemia of carp virus (SVCV), and then tested against the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The results demonstrated that AgNP-TPU materials exhibited significant (75%) and direct antiviral activity against SVCV virions in a time- and temperature-dependent manner. Similar inhibition levels were found against SARS-CoV-2. These findings show the potential of AgNP-TPU-based materials as a supporting strategy to control viral spread.
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Affiliation(s)
- Rocío Díaz-Puertas
- Institute of Research, Development and Innovation in Healthcare Biotechnology of Elche (IDiBE), Miguel Hernández University (UMH), 03202 Elche, Spain
| | - Enrique Rodríguez-Cañas
- Institute of Research, Development and Innovation in Healthcare Biotechnology of Elche (IDiBE), Miguel Hernández University (UMH), 03202 Elche, Spain
| | - Melissa Bello-Perez
- Centro Nacional de Biotecnología (CNB-CSIC), Departamento de Biología Molecular y Celular, Campus de la Universidad Autónoma de Madrid, c/Darwin 3, 20849 Madrid, Spain
| | - Marta Fernández-Oliver
- Institute of Research, Development and Innovation in Healthcare Biotechnology of Elche (IDiBE), Miguel Hernández University (UMH), 03202 Elche, Spain
| | - Ricardo Mallavia
- Institute of Research, Development and Innovation in Healthcare Biotechnology of Elche (IDiBE), Miguel Hernández University (UMH), 03202 Elche, Spain
| | - Alberto Falco
- Institute of Research, Development and Innovation in Healthcare Biotechnology of Elche (IDiBE), Miguel Hernández University (UMH), 03202 Elche, Spain
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Manaig YJY, Mármol-Sánchez E, Castelló A, Esteve-Codina A, Sandrini S, Savoini G, Agazzi A, Sánchez A, Folch JM. Exon-intron split analysis reveals posttranscriptional regulatory signals induced by high and low n-6/n-3 polyunsaturated fatty acid ratio diets in piglets. J Anim Sci 2023; 101:skad271. [PMID: 37561402 PMCID: PMC10503648 DOI: 10.1093/jas/skad271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 08/08/2023] [Indexed: 08/11/2023] Open
Abstract
Polyunsaturated fatty acids (PUFA), such as omega-6 (n-6) and omega-3 (n-3), play a vital role in nutrient metabolism, inflammatory response, and gene regulation. microRNAs (miRNA), which can potentially degrade targeted messenger RNAs (mRNA) and/or inhibit their translation, might play a relevant role in PUFA-related changes in gene expression. Although differential expression analyses can provide a comprehensive picture of gene expression variation, they are unable to disentangle when in the mRNA life cycle the regulation of expression is taking place, including any putative functional miRNA-driven repression. To capture this, we used an exon-intron split analysis (EISA) approach to account for posttranscriptional changes in response to extreme values of n-6/n-3 PUFA ratio. Longissimus dorsi muscle samples of male and female piglets from sows fed with n-6/n-3 PUFA ratio of 13:1 (SOY) or 4:1 (LIN), were analyzed in a bidirectional contrast (LIN vs. SOY, SOY vs. LIN). Our results allowed the identification of genes showing strong posttranscriptional downregulation signals putatively targeted by significantly upregulated miRNA. Moreover, we identified genes primarily involved in the regulation of lipid-related metabolism and immune response, which may be associated with the pro- and anti-inflammatory functions of the n-6 and n-3 PUFA, respectively. EISA allowed us to uncover regulatory networks complementing canonical differential expression analyses, thus providing a more comprehensive view of muscle metabolic changes in response to PUFA concentration.
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Affiliation(s)
- Yron Joseph Yabut Manaig
- Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Barcelona 08193, Spain
- Plant and Animal Genomics, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Campus Universitat Autònoma de Barcelona, Barcelona 08193, Spain
- Department of Veterinary Medicine and Animal Sciences, Università degli Studi di Milano, Lodi 26900, Italy
| | - Emilio Mármol-Sánchez
- Science for Life Laboratory, Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm 11418, Sweden
- Centre for Palaeogenetics, Stockholm 10691, Sweden
| | - Anna Castelló
- Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Barcelona 08193, Spain
- Plant and Animal Genomics, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Campus Universitat Autònoma de Barcelona, Barcelona 08193, Spain
| | - Anna Esteve-Codina
- Functional Genomics, CNAG-CRG, Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Spain
| | - Silvia Sandrini
- Department of Veterinary Medicine and Animal Sciences, Università degli Studi di Milano, Lodi 26900, Italy
| | - Giovanni Savoini
- Department of Veterinary Medicine and Animal Sciences, Università degli Studi di Milano, Lodi 26900, Italy
| | - Alessandro Agazzi
- Department of Veterinary Medicine and Animal Sciences, Università degli Studi di Milano, Lodi 26900, Italy
| | - Armand Sánchez
- Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Barcelona 08193, Spain
- Plant and Animal Genomics, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Campus Universitat Autònoma de Barcelona, Barcelona 08193, Spain
| | - Josep M Folch
- Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Barcelona 08193, Spain
- Plant and Animal Genomics, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Campus Universitat Autònoma de Barcelona, Barcelona 08193, Spain
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Alfaro-Ruiz R, Aguado C, Martín-Belmonte A, Moreno-Martínez AE, Merchán-Rubira J, Hernández F, Ávila J, Fukazawa Y, Luján R. Alteration in the Synaptic and Extrasynaptic Organization of AMPA Receptors in the Hippocampus of P301S Tau Transgenic Mice. Int J Mol Sci 2022; 23:13527. [PMID: 36362317 PMCID: PMC9656470 DOI: 10.3390/ijms232113527] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/30/2022] [Accepted: 10/31/2022] [Indexed: 11/26/2023] Open
Abstract
Tau pathology is a hallmark of Alzheimer's disease (AD) and other tauopathies, but how pathological tau accumulation alters the glutamate receptor dynamics driving synaptic dysfunction is unclear. Here, we determined the impact of tau pathology on AMPAR expression, density, and subcellular distribution in the hippocampus of P301S mice using immunoblot, histoblot, and quantitative SDS-digested freeze-fracture replica labeling (SDS-FRL). Histoblot and immunoblot showed differential regulation of GluA1 and GluA2 in the hippocampus of P301S mice. The GluA2 subunit was downregulated in the hippocampus at 3 months while both GluA1 and GluA2 subunits were downregulated at 10 months. However, the total amount of GluA1-4 was similar in P301S mice and in age-matched wild-type mice. Using quantitative SDS-FRL, we unraveled the molecular organization of GluA1-4 in various synaptic connections at a high spatial resolution on pyramidal cell spines and interneuron dendrites in the CA1 field of the hippocampus in 10-month-old P301S mice. The labeling density for GluA1-4 in the excitatory synapses established on spines was significantly reduced in P301S mice, compared to age-matched wild-type mice, in the strata radiatum and lacunosum-moleculare but unaltered in the stratum oriens. The density of synaptic GluA1-4 established on interneuron dendrites was significantly reduced in P301S mice in the three strata. The labeling density for GluA1-4 at extrasynaptic sites was significantly reduced in several postsynaptic compartments of CA1 pyramidal cells and interneurons in the three dendritic layers in P301S mice. Our data demonstrate that the progressive accumulation of phospho-tau is associated with alteration of AMPARs on the surface of different neuron types, including synaptic and extrasynaptic membranes, leading to a decline in the trafficking and synaptic transmission, thereby likely contributing to the pathological events taking place in AD.
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Affiliation(s)
- Rocio Alfaro-Ruiz
- Synaptic Structure Laboratory, Instituto de Investigación en Discapacidades Neurológicas (IDINE), Departamento de Ciencias Médicas, Facultad de Medicina, Universidad Castilla-La Mancha, Campus Biosanitario, C/Almansa 14, 02006 Albacete, Spain
| | - Carolina Aguado
- Synaptic Structure Laboratory, Instituto de Investigación en Discapacidades Neurológicas (IDINE), Departamento de Ciencias Médicas, Facultad de Medicina, Universidad Castilla-La Mancha, Campus Biosanitario, C/Almansa 14, 02006 Albacete, Spain
| | - Alejandro Martín-Belmonte
- Synaptic Structure Laboratory, Instituto de Investigación en Discapacidades Neurológicas (IDINE), Departamento de Ciencias Médicas, Facultad de Medicina, Universidad Castilla-La Mancha, Campus Biosanitario, C/Almansa 14, 02006 Albacete, Spain
- Pharmacology Unit, Department of Pathology and Experimental Therapeutics, Faculty of Medicine and Health Sciences, Institute of Neurosciences, University of Barcelona, 08907 L’Hospitalet de Llobregat, Spain
- Neuropharmacology and Pain Group, Neuroscience Program, Institut d’Investigació Biomèdica de Bellvitge, IDIBELL, 08907 L’Hospitalet de Llobregat, Spain
| | - Ana Esther Moreno-Martínez
- Synaptic Structure Laboratory, Instituto de Investigación en Discapacidades Neurológicas (IDINE), Departamento de Ciencias Médicas, Facultad de Medicina, Universidad Castilla-La Mancha, Campus Biosanitario, C/Almansa 14, 02006 Albacete, Spain
| | | | - Félix Hernández
- Centro de Biología Molecular Severo Ochoa, CSIC-UAM, 28049 Madrid, Spain
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas, ISCIII, 28049 Madrid, Spain
| | - Jesús Ávila
- Centro de Biología Molecular Severo Ochoa, CSIC-UAM, 28049 Madrid, Spain
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas, ISCIII, 28049 Madrid, Spain
| | - Yugo Fukazawa
- Division of Brain Structure and Function, Faculty of Medical Science, University of Fukui, Fukui 910-1193, Japan
| | - Rafael Luján
- Synaptic Structure Laboratory, Instituto de Investigación en Discapacidades Neurológicas (IDINE), Departamento de Ciencias Médicas, Facultad de Medicina, Universidad Castilla-La Mancha, Campus Biosanitario, C/Almansa 14, 02006 Albacete, Spain
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Beteta-Göbel R, Miralles M, Fernández-Díaz J, Rodríguez-Lorca R, Torres M, Fernández-García P, Escribá PV, Lladó V. HCA (2-Hydroxy-Docosahexaenoic Acid) Induces Apoptosis and Endoplasmic Reticulum Stress in Pancreatic Cancer Cells. Int J Mol Sci 2022; 23:9902. [PMID: 36077299 PMCID: PMC9456069 DOI: 10.3390/ijms23179902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/24/2022] [Accepted: 08/27/2022] [Indexed: 12/09/2022] Open
Abstract
Pancreatic cancer has a high mortality rate due to its aggressive nature and high metastatic rate. When coupled to the difficulties in detecting this type of tumor early and the lack of effective treatments, this cancer is currently one of the most important clinical challenges in the field of oncology. Melitherapy is an innovative therapeutic approach that is based on modifying the composition and structure of cell membranes to treat different diseases, including cancers. In this context, 2-hydroxycervonic acid (HCA) is a melitherapeutic agent developed to combat pancreatic cancer cells, provoking the programmed cell death by apoptosis of these cells by inducing ER stress and triggering the production of ROS species. The efficacy of HCA was demonstrated in vivo, alone and in combination with gemcitabine, using a MIA PaCa-2 cell xenograft model of pancreatic cancer in which no apparent toxicity was evident. HCA is metabolized by α-oxidation to C21:5n-3 (heneicosapentaenoic acid), which in turn also showed anti-proliferative effect in these cells. Given the unmet clinical needs associated with pancreatic cancer, the data presented here suggest that the use of HCA merits further study as a potential therapy for this condition.
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Affiliation(s)
- Roberto Beteta-Göbel
- Laboratory of Molecular Cell Biomedicine, Department of Biology, University of the Balearic Islands, 07122 Palma de Mallorca, Spain
- R&D Department, Laminar Pharmaceuticals, C/Isaac Newton, 07121 Palma de Mallorca, Spain
| | - Marc Miralles
- Laboratory of Molecular Cell Biomedicine, Department of Biology, University of the Balearic Islands, 07122 Palma de Mallorca, Spain
- R&D Department, Laminar Pharmaceuticals, C/Isaac Newton, 07121 Palma de Mallorca, Spain
| | - Javier Fernández-Díaz
- Laboratory of Molecular Cell Biomedicine, Department of Biology, University of the Balearic Islands, 07122 Palma de Mallorca, Spain
- R&D Department, Laminar Pharmaceuticals, C/Isaac Newton, 07121 Palma de Mallorca, Spain
| | - Raquel Rodríguez-Lorca
- Laboratory of Molecular Cell Biomedicine, Department of Biology, University of the Balearic Islands, 07122 Palma de Mallorca, Spain
- R&D Department, Laminar Pharmaceuticals, C/Isaac Newton, 07121 Palma de Mallorca, Spain
| | - Manuel Torres
- Laboratory of Molecular Cell Biomedicine, Department of Biology, University of the Balearic Islands, 07122 Palma de Mallorca, Spain
| | - Paula Fernández-García
- Laboratory of Molecular Cell Biomedicine, Department of Biology, University of the Balearic Islands, 07122 Palma de Mallorca, Spain
- R&D Department, Laminar Pharmaceuticals, C/Isaac Newton, 07121 Palma de Mallorca, Spain
| | - Pablo V. Escribá
- Laboratory of Molecular Cell Biomedicine, Department of Biology, University of the Balearic Islands, 07122 Palma de Mallorca, Spain
| | - Victoria Lladó
- Laboratory of Molecular Cell Biomedicine, Department of Biology, University of the Balearic Islands, 07122 Palma de Mallorca, Spain
- R&D Department, Laminar Pharmaceuticals, C/Isaac Newton, 07121 Palma de Mallorca, Spain
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20
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Nuez-Martinez M, Pinto CIG, Guerreiro JF, Mendes F, Marques F, Muñoz-Juan A, Xavier JAM, Laromaine A, Bitonto V, Protti N, Crich SG, Teixidor F, Viñas C. Cobaltabis(dicarbollide) ([ o-COSAN] -) as Multifunctional Chemotherapeutics: A Prospective Application in Boron Neutron Capture Therapy (BNCT) for Glioblastoma. Cancers (Basel) 2021; 13:6367. [PMID: 34944987 PMCID: PMC8699431 DOI: 10.3390/cancers13246367] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/10/2021] [Accepted: 12/16/2021] [Indexed: 12/12/2022] Open
Abstract
PURPOSE The aim of our study was to assess if the sodium salt of cobaltabis(dicarbollide) and its di-iodinated derivative (Na[o-COSAN] and Na[8,8'-I2-o-COSAN]) could be promising agents for dual anti-cancer treatment (chemotherapy + BNCT) for GBM. METHODS The biological activities of the small molecules were evaluated in vitro with glioblastoma cells lines U87 and T98G in 2D and 3D cell models and in vivo in the small model animal Caenorhabditis elegans (C. elegans) at the L4-stage and using the eggs. RESULTS Our studies indicated that only spheroids from the U87 cell line have impaired growth after treatment with both compounds, suggesting an increased resistance from T98G spheroids, contrary to what was observed in the monolayer culture, which highlights the need to employ 3D models for future GBM studies. In vitro tests in U87 and T98G cells conclude that the amount of 10B inside the cells is enough for BNCT irradiation. BNCT becomes more effective on T98G after their incubation with Na[8,8'-I2-o-COSAN], whereas no apparent cell-killing effect was observed for untreated cells. CONCLUSIONS These small molecules, particularly [8,8'-I2-o-COSAN]-, are serious candidates for BNCT now that the facilities of accelerator-based neutron sources are more accessible, providing an alternative treatment for resistant glioblastoma.
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Affiliation(s)
- Miquel Nuez-Martinez
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
| | - Catarina I. G. Pinto
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (C.I.G.P.); (J.F.G.); (F.M.); (F.M.)
| | - Joana F. Guerreiro
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (C.I.G.P.); (J.F.G.); (F.M.); (F.M.)
| | - Filipa Mendes
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (C.I.G.P.); (J.F.G.); (F.M.); (F.M.)
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (C.I.G.P.); (J.F.G.); (F.M.); (F.M.)
| | - Amanda Muñoz-Juan
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
| | - Jewel Ann Maria Xavier
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
| | - Anna Laromaine
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
| | - Valeria Bitonto
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (V.B.); (S.G.C.)
| | | | - Simonetta Geninatti Crich
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (V.B.); (S.G.C.)
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
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21
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García‐Marín J, Griera M, Alajarín R, Rodríguez‐Puyol M, Rodríguez‐Puyol D, Vaquero JJ. A Computer-Driven Scaffold-Hopping Approach Generating New PTP1B Inhibitors from the Pyrrolo[1,2-a]quinoxaline Core. ChemMedChem 2021; 16:2895-2906. [PMID: 34137509 PMCID: PMC8518816 DOI: 10.1002/cmdc.202100338] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/13/2021] [Indexed: 11/06/2022]
Abstract
Protein tyrosine phosphatase 1B (PTP1B) is a very promising target for the treatment of metabolic disorders such as type II diabetes mellitus. Although it was validated as a promising target for this disease more than 30 years ago, as yet there is no drug in advanced clinical trials, and its biochemical mechanism and functions are still being studied. In the present study, based on our experience generating PTP1B inhibitors, we have developed and implemented a scaffold-hopping approach to vary the pyrrole ring of the pyrrolo[1,2-a]quinoxaline core, supported by extensive computational techniques aimed to explain the molecular interaction with PTP1B. Using a combination of docking, molecular dynamics and end-point free-energy calculations, we have rationally designed a hypothesis for new PTP1B inhibitors, supporting their recognition mechanism at a molecular level. After the design phase, we were able to easily synthesize proposed candidates and their evaluation against PTP1B was found to be in good concordance with our predictions. Moreover, the best candidates exhibited glucose uptake increments in cellulo model, thus confirming their utility for PTP1B inhibition and validating this approach for inhibitors design and molecules thus obtained.
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Affiliation(s)
- Javier García‐Marín
- Departamento de Química Orgánica y Química InorgánicaUniversidad de Alcalá28805Alcalá de HenaresSpain
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS)Ctra. Colmenar Viejo, km. 910028034MadridSpain
- Instituto de Investigación Química Andrés Manuel del Río (IQAR)Universidad de AlcaláAlcalá de HenaresSpain
- Departamento de Química Biológica y EstructuralCentro de Investigaciones Biológicas Margarita Salas (CIB-CSIC)Calle Ramiro de Maeztu 928040MadridSpain
| | - Mercedes Griera
- Graphenano Medical Care, S.L.C/Pablo Casals, no. 13YeclaMurciaSpain
- Departamento de Biología de SistemasUniversidad de Alcalá28805Alcalá de HenaresSpain
| | - Ramón Alajarín
- Departamento de Química Orgánica y Química InorgánicaUniversidad de Alcalá28805Alcalá de HenaresSpain
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS)Ctra. Colmenar Viejo, km. 910028034MadridSpain
- Instituto de Investigación Química Andrés Manuel del Río (IQAR)Universidad de AlcaláAlcalá de HenaresSpain
| | - Manuel Rodríguez‐Puyol
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS)Ctra. Colmenar Viejo, km. 910028034MadridSpain
- Departamento de Biología de SistemasUniversidad de Alcalá28805Alcalá de HenaresSpain
| | - Diego Rodríguez‐Puyol
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS)Ctra. Colmenar Viejo, km. 910028034MadridSpain
- Fundación de Investigación BiomédicaUnidad de Nefrología del Hospital Príncipe de Asturias yDepartamento de Medicina y Especialidades MédicasUniversidad de Alcalá28805Alcalá de HenaresSpain
| | - Juan J. Vaquero
- Departamento de Química Orgánica y Química InorgánicaUniversidad de Alcalá28805Alcalá de HenaresSpain
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS)Ctra. Colmenar Viejo, km. 910028034MadridSpain
- Instituto de Investigación Química Andrés Manuel del Río (IQAR)Universidad de AlcaláAlcalá de HenaresSpain
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22
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Nuez-Martínez M, Pedrosa L, Martinez-Rovira I, Yousef I, Diao D, Teixidor F, Stanzani E, Martínez-Soler F, Tortosa A, Sierra À, Gonzalez JJ, Viñas C. Synchrotron-Based Fourier-Transform Infrared Micro-Spectroscopy (SR-FTIRM) Fingerprint of the Small Anionic Molecule Cobaltabis(dicarbollide) Uptake in Glioma Stem Cells. Int J Mol Sci 2021; 22:9937. [PMID: 34576098 PMCID: PMC8466526 DOI: 10.3390/ijms22189937] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/07/2021] [Accepted: 09/10/2021] [Indexed: 12/16/2022] Open
Abstract
The anionic cobaltabis (dicarbollide) [3,3'-Co(1,2-C2B9H11)2]-, [o-COSAN]-, is the most studied icosahedral metallacarborane. The sodium salts of [o-COSAN]- could be an ideal candidate for the anti-cancer treatment Boron Neutron Capture Therapy (BNCT) as it possesses the ability to readily cross biological membranes thereby producing cell cycle arrest in cancer cells. BNCT is a cancer therapy based on the potential of 10B atoms to produce α particles that cross tissues in which the 10B is accumulated without damaging the surrounding healthy tissues, after being irradiated with low energy thermal neutrons. Since Na[o-COSAN] displays a strong and characteristic ν(B-H) frequency in the infrared range 2.600-2.500 cm-1, we studied the uptake of Na[o-COSAN] followed by its interaction with biomolecules and its cellular biodistribution in two different glioma initiating cells (GICs), mesenchymal and proneural respectively, by using Synchrotron Radiation-Fourier Transform Infrared (FTIR) micro-spectroscopy (SR-FTIRM) facilities at the MIRAS Beamline of ALBA synchrotron light source. The spectroscopic data analysis from the bands in the regions of DNA, proteins, and lipids permitted to suggest that after its cellular uptake, Na[o-COSAN] strongly interacts with DNA strings, modifies proteins secondary structure and also leads to lipid saturation. The mapping suggests the nuclear localization of [o-COSAN]-, which according to reported Monte Carlo simulations may result in a more efficient cell-killing effect compared to that in a uniform distribution within the entire cell. In conclusion, we show pieces of evidence that at low doses, [o-COSAN]- translocates GIC cells' membranes and it alters the physiology of the cells, suggesting that Na[o-COSAN] is a promising agent to BNCT for glioblastoma cells.
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Affiliation(s)
- Miquel Nuez-Martínez
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain; (M.N.-M.); (F.T.)
| | - Leire Pedrosa
- Laboratory of Experimental Oncological Neurosurgery, Neurosurgery Service, Hospital Clinic de Barcelona—FCRB, 08036 Barcelona, Spain; (L.P.); (D.D.); (J.J.G.)
| | - Immaculada Martinez-Rovira
- Ionizing Radiation Research Group (GRRI), Physics Department, Universitat Autònoma de Barcelona (UAB), Avinguda de l’Eix Central, Edifici C. Campus de la UAB, 08193 Cerdanyola del Vallès, Spain;
- ALBA-CELLS Synchrotron, MIRAS Beamline, Carrer de la Llum 2-26, 08290 Cerdanyola del Vallès, Spain;
| | - Ibraheem Yousef
- ALBA-CELLS Synchrotron, MIRAS Beamline, Carrer de la Llum 2-26, 08290 Cerdanyola del Vallès, Spain;
| | - Diouldé Diao
- Laboratory of Experimental Oncological Neurosurgery, Neurosurgery Service, Hospital Clinic de Barcelona—FCRB, 08036 Barcelona, Spain; (L.P.); (D.D.); (J.J.G.)
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain; (M.N.-M.); (F.T.)
| | - Elisabetta Stanzani
- Laboratory of Pharmacology and Brain Pathology, IRCCS Humanitas Research Hospital, 20089 Rozzano, Italy;
| | - Fina Martínez-Soler
- Apoptosis and Cancer Unit, Department of Physiological Sciences, IDIBELL, Faculty of Medicine and Health Sciences, Universitat de Barcelona, 08907 L’Hospitalet del Llobregat, Spain; (F.M.-S.); (A.T.)
| | - Avelina Tortosa
- Apoptosis and Cancer Unit, Department of Physiological Sciences, IDIBELL, Faculty of Medicine and Health Sciences, Universitat de Barcelona, 08907 L’Hospitalet del Llobregat, Spain; (F.M.-S.); (A.T.)
| | - Àngels Sierra
- Laboratory of Experimental Oncological Neurosurgery, Neurosurgery Service, Hospital Clinic de Barcelona—FCRB, 08036 Barcelona, Spain; (L.P.); (D.D.); (J.J.G.)
| | - José Juan Gonzalez
- Laboratory of Experimental Oncological Neurosurgery, Neurosurgery Service, Hospital Clinic de Barcelona—FCRB, 08036 Barcelona, Spain; (L.P.); (D.D.); (J.J.G.)
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain; (M.N.-M.); (F.T.)
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23
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de Armas-Rillo S, Fumagallo-Reading F, Luis-Ravelo D, Abdul-Jalbar B, González-Hernández T, Lahoz F. Random Lasing Detection of Mutant Huntingtin Expression in Cells. Sensors (Basel) 2021; 21:3825. [PMID: 34073127 PMCID: PMC8198928 DOI: 10.3390/s21113825] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/24/2021] [Accepted: 05/26/2021] [Indexed: 11/24/2022]
Abstract
Huntington's disease (HD) is an autosomal dominant, incurable neurodegenerative disease caused by mutation in the huntingtin gene (HTT). HTT mutation leads to protein misfolding and aggregation, which affect cells' functions and structural features. Because these changes might modify the scattering strength of affected cells, we propose that random lasing (RL) is an appropriate technique for detecting cells that express mutated HTT. To explore this hypothesis, we used a cell model of HD based on the expression of two different forms-pathogenic and non-pathogenic-of HTT. The RL signals from both cell profiles were compared. A multivariate statistical analysis of the RL signals based on the principal component analysis (PCA) and linear discriminant analysis (LDA) techniques revealed substantial differences between cells that expressed the pathogenic and the non-pathogenic forms of HTT.
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Affiliation(s)
- Sergio de Armas-Rillo
- Departamento de Física, Instituto Universitario de Estudios Avanzados en Física Atómica, Molecular y Fotónica (IUdEA), Universidad de La Laguna, 38206 Santa Cruz de Tenerife, Spain;
| | - Felipe Fumagallo-Reading
- Departamento de Ciencias Médicas Básicas, Instituto de Tecnologías Biomédicas (ITB), Universidad de La Laguna, 38320 Santa Cruz de Tenerife, Spain; (F.F.-R.); (D.L.-R.); (T.G.-H.)
| | - Diego Luis-Ravelo
- Departamento de Ciencias Médicas Básicas, Instituto de Tecnologías Biomédicas (ITB), Universidad de La Laguna, 38320 Santa Cruz de Tenerife, Spain; (F.F.-R.); (D.L.-R.); (T.G.-H.)
| | - Beatriz Abdul-Jalbar
- Departamento de Matemáticas, Estadística e Investigación Operativa, Universidad de La Laguna, 38206 Santa Cruz de Tenerife, Spain;
| | - Tomás González-Hernández
- Departamento de Ciencias Médicas Básicas, Instituto de Tecnologías Biomédicas (ITB), Universidad de La Laguna, 38320 Santa Cruz de Tenerife, Spain; (F.F.-R.); (D.L.-R.); (T.G.-H.)
| | - Fernando Lahoz
- Departamento de Física, Instituto Universitario de Estudios Avanzados en Física Atómica, Molecular y Fotónica (IUdEA), Universidad de La Laguna, 38206 Santa Cruz de Tenerife, Spain;
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24
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Sanchez-Aguilera A, Wheeler DW, Jurado-Parras T, Valero M, Nokia MS, Cid E, Fernandez-Lamo I, Sutton N, García-Rincón D, de la Prida LM, Ascoli GA. An update to Hippocampome.org by integrating single-cell phenotypes with circuit function in vivo. PLoS Biol 2021; 19:e3001213. [PMID: 33956790 PMCID: PMC8130934 DOI: 10.1371/journal.pbio.3001213] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 05/18/2021] [Accepted: 03/30/2021] [Indexed: 02/03/2023] Open
Abstract
Understanding brain operation demands linking basic behavioral traits to cell-type specific dynamics of different brain-wide subcircuits. This requires a system to classify the basic operational modes of neurons and circuits. Single-cell phenotyping of firing behavior during ongoing oscillations in vivo has provided a large body of evidence on entorhinal-hippocampal function, but data are dispersed and diverse. Here, we mined literature to search for information regarding the phase-timing dynamics of over 100 hippocampal/entorhinal neuron types defined in Hippocampome.org. We identified missing and unresolved pieces of knowledge (e.g., the preferred theta phase for a specific neuron type) and complemented the dataset with our own new data. By confronting the effect of brain state and recording methods, we highlight the equivalences and differences across conditions and offer a number of novel observations. We show how a heuristic approach based on oscillatory features of morphologically identified neurons can aid in classifying extracellular recordings of single cells and discuss future opportunities and challenges towards integrating single-cell phenotypes with circuit function.
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Affiliation(s)
| | - Diek W. Wheeler
- Bioengineering Department, Volgenau School of Engineering, George Mason University, Virginia, United States of America
| | | | - Manuel Valero
- Instituto Cajal CSIC, Madrid, Spain
- NYU Neuroscience Institute, New York, United States of America
| | - Miriam S. Nokia
- Instituto Cajal CSIC, Madrid, Spain
- Department of Psychology, University of Jyvaskyla, Jyvaskyla, Finland
- Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland
| | | | | | - Nate Sutton
- Bioengineering Department, Volgenau School of Engineering, George Mason University, Virginia, United States of America
| | | | | | - Giorgio A. Ascoli
- Bioengineering Department, Volgenau School of Engineering, George Mason University, Virginia, United States of America
- * E-mail: (LMP); (GAA)
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Hernández-Gutiérrez D, Muñoz F, Sánchez-García J, Sommer W, Abdel Rahman R, Casado P, Jiménez-Ortega L, Espuny J, Fondevila S, Martín-Loeches M. Situating language in a minimal social context: how seeing a picture of the speaker's face affects language comprehension. Soc Cogn Affect Neurosci 2021; 16:502-511. [PMID: 33470410 PMCID: PMC8094999 DOI: 10.1093/scan/nsab009] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 11/29/2020] [Accepted: 01/19/2021] [Indexed: 11/14/2022] Open
Abstract
Natural use of language involves at least two individuals. Some studies have focused on the interaction between senders in communicative situations and how the knowledge about the speaker can bias language comprehension. However, the mere effect of a face as a social context on language processing remains unknown. In the present study, we used event-related potentials to investigate the semantic and morphosyntactic processing of speech in the presence of a photographic portrait of the speaker. In Experiment 1, we show that the N400, a component related to semantic comprehension, increased its amplitude when processed within this minimal social context compared to a scrambled face control condition. Hence, the semantic neural processing of speech is sensitive to the concomitant perception of a picture of the speaker's face, even if irrelevant to the content of the sentences. Moreover, a late posterior negativity effect was found to the presentation of the speaker's face compared to control stimuli. In contrast, in Experiment 2, we found that morphosyntactic processing, as reflected in left anterior negativity and P600 effects, is not notably affected by the presence of the speaker's portrait. Overall, the present findings suggest that the mere presence of the speaker's image seems to trigger a minimal communicative context, increasing processing resources for language comprehension at the semantic level.
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Affiliation(s)
- David Hernández-Gutiérrez
- Cognitive Neuroscience Section, Center UCM-ISCIII for Human Evolution and Behaviour, Madrid 28029, Spain
| | - Francisco Muñoz
- Cognitive Neuroscience Section, Center UCM-ISCIII for Human Evolution and Behaviour, Madrid 28029, Spain
- Department of Psychobiology & Methods for the Behavioural Sciences, Complutense University of Madrid, Madrid 28040, Spain
| | - Jose Sánchez-García
- Cognitive Neuroscience Section, Center UCM-ISCIII for Human Evolution and Behaviour, Madrid 28029, Spain
| | - Werner Sommer
- Department of Psychology, Humboldt Universität zu Berlin, Berlin 10117, Germany
| | - Rasha Abdel Rahman
- Department of Psychology, Humboldt Universität zu Berlin, Berlin 10117, Germany
| | - Pilar Casado
- Cognitive Neuroscience Section, Center UCM-ISCIII for Human Evolution and Behaviour, Madrid 28029, Spain
- Department of Psychobiology & Methods for the Behavioural Sciences, Complutense University of Madrid, Madrid 28040, Spain
| | - Laura Jiménez-Ortega
- Cognitive Neuroscience Section, Center UCM-ISCIII for Human Evolution and Behaviour, Madrid 28029, Spain
- Department of Psychobiology & Methods for the Behavioural Sciences, Complutense University of Madrid, Madrid 28040, Spain
| | - Javier Espuny
- Cognitive Neuroscience Section, Center UCM-ISCIII for Human Evolution and Behaviour, Madrid 28029, Spain
| | - Sabela Fondevila
- Cognitive Neuroscience Section, Center UCM-ISCIII for Human Evolution and Behaviour, Madrid 28029, Spain
- Department of Psychobiology & Methods for the Behavioural Sciences, Complutense University of Madrid, Madrid 28040, Spain
| | - Manuel Martín-Loeches
- Cognitive Neuroscience Section, Center UCM-ISCIII for Human Evolution and Behaviour, Madrid 28029, Spain
- Department of Psychobiology & Methods for the Behavioural Sciences, Complutense University of Madrid, Madrid 28040, Spain
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Albaladejo RG, Martín-Hernanz S, Reyes-Betancort JA, Santos-Guerra A, Olangua-Corral M, Aparicio A. Reconstruction of the spatio-temporal diversification and ecological niche evolution of Helianthemum (Cistaceae) in the Canary Islands using genotyping-by-sequencing data. Ann Bot 2021; 127:597-611. [PMID: 32386290 PMCID: PMC8052925 DOI: 10.1093/aob/mcaa090] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 05/02/2020] [Indexed: 05/14/2023]
Abstract
BACKGROUND AND AIMS Several biogeographical models have been proposed to explain the colonization and diversification patterns of Macaronesian lineages. In this study, we calculated the diversification rates and explored what model best explains the current distribution of the 15 species endemic to the Canary Islands belonging to Helianthemum sect. Helianthemum (Cistaceae). METHODS We performed robust phylogenetic reconstructions based on genotyping-by-sequencing data and analysed the timing, biogeographical history and ecological niche conservatism of this endemic Canarian clade. KEY RESULTS Our phylogenetic analyses provided strong support for the monophyly of this clade, and retrieved five lineages not currently restricted to a single island. The pristine colonization event took place in the Pleistocene (~1.82 Ma) via dispersal to Tenerife by a Mediterranean ancestor. CONCLUSIONS The rapid and abundant diversification (0.75-1.85 species per million years) undergone by this Canarian clade seems the result of complex inter-island dispersal events followed by allopatric speciation driven mostly by niche conservatism, i.e. inter-island dispersal towards niches featuring similar environmental conditions. Nevertheless, significant instances of ecological niche shifts have also been observed in some lineages, making an important contribution to the overall diversification history of this clade.
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Affiliation(s)
- Rafael G Albaladejo
- Departamento de Biología Vegetal y Ecología, Universidad de Sevilla, Sevilla, Spain
| | - Sara Martín-Hernanz
- Departamento de Biología Vegetal y Ecología, Universidad de Sevilla, Sevilla, Spain
- For correspondence. E-mail
| | - J Alfredo Reyes-Betancort
- Jardín de Aclimatación de la Orotava (Instituto Canario de Investigaciones Agrarias - ICIA), Puerto de la Cruz, Santa Cruz de Tenerife, Spain
| | - Arnoldo Santos-Guerra
- Jardín de Aclimatación de la Orotava (Instituto Canario de Investigaciones Agrarias - ICIA), Puerto de la Cruz, Santa Cruz de Tenerife, Spain
| | - María Olangua-Corral
- Departamento de Biología Reproductiva y Micro-morfología, Jardín Botánico Canario ‘Viera y Clavijo’—Unidad Asociada CSIC (Cabildo de Gran Canaria), Las Palmas de Gran Canaria, Spain
| | - Abelardo Aparicio
- Departamento de Biología Vegetal y Ecología, Universidad de Sevilla, Sevilla, Spain
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27
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Hofmann J, Ginex T, Espargaró A, Scheiner M, Gunesch S, Aragó M, Stigloher C, Sabaté R, Luque FJ, Decker M. Azobioisosteres of Curcumin with Pronounced Activity against Amyloid Aggregation, Intracellular Oxidative Stress, and Neuroinflammation. Chemistry 2021; 27:6015-6027. [PMID: 33666306 PMCID: PMC8048673 DOI: 10.1002/chem.202005263] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/14/2021] [Indexed: 01/01/2023]
Abstract
Many (poly-)phenolic natural products, for example, curcumin and taxifolin, have been studied for their activity against specific hallmarks of neurodegeneration, such as amyloid-β 42 (Aβ42) aggregation and neuroinflammation. Due to their drawbacks, arising from poor pharmacokinetics, rapid metabolism, and even instability in aqueous medium, the biological activity of azobenzene compounds carrying a pharmacophoric catechol group, which have been designed as bioisoteres of curcumin has been examined. Molecular simulations reveal the ability of these compounds to form a hydrophobic cluster with Aβ42, which adopts different folds, affecting the propensity to populate fibril-like conformations. Furthermore, the curcumin bioisosteres exceeded the parent compound in activity against Aβ42 aggregation inhibition, glutamate-induced intracellular oxidative stress in HT22 cells, and neuroinflammation in microglial BV-2 cells. The most active compound prevented apoptosis of HT22 cells at a concentration of 2.5 μm (83 % cell survival), whereas curcumin only showed very low protection at 10 μm (21 % cell survival).
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Affiliation(s)
- Julian Hofmann
- Pharmaceutical and Medicinal ChemistryInstitute of, Pharmacy and Food ChemistryUniversity of WürzburgAm Hubland97074WürzburgGermany
| | - Tiziana Ginex
- Department of Nutrition Food Science and GastronomyFaculty of Pharmacy, Institute of Theoretical and Computational, Chemistry and Institute of Biomedicine, Campus TorriberaUniversity of BarcelonaSanta Coloma de Gramenet08921Spain
| | - Alba Espargaró
- Pharmacy and Pharmaceutical Technology and Physical-ChemistrySchool of Pharmacy Institute of Nanoscience and Nanotechnology, (IN2UB)University of Barcelona08028BarcelonaSpain
| | - Matthias Scheiner
- Pharmaceutical and Medicinal ChemistryInstitute of, Pharmacy and Food ChemistryUniversity of WürzburgAm Hubland97074WürzburgGermany
| | - Sandra Gunesch
- Pharmaceutical and Medicinal ChemistryInstitute of, Pharmacy and Food ChemistryUniversity of WürzburgAm Hubland97074WürzburgGermany
| | - Marc Aragó
- Department of Nutrition Food Science and GastronomyFaculty of Pharmacy, Institute of Theoretical and Computational, Chemistry and Institute of Biomedicine, Campus TorriberaUniversity of BarcelonaSanta Coloma de Gramenet08921Spain
| | - Christian Stigloher
- Imaging Core FacilityBiocenter/Theodor-Boveri-InstituteUniversity of WürzburgAm Hubland97074WürzburgGermany
| | - Raimon Sabaté
- Pharmacy and Pharmaceutical Technology and Physical-ChemistrySchool of Pharmacy Institute of Nanoscience and Nanotechnology, (IN2UB)University of Barcelona08028BarcelonaSpain
| | - F. Javier Luque
- Department of Nutrition Food Science and GastronomyFaculty of Pharmacy, Institute of Theoretical and Computational, Chemistry and Institute of Biomedicine, Campus TorriberaUniversity of BarcelonaSanta Coloma de Gramenet08921Spain
| | - Michael Decker
- Pharmaceutical and Medicinal ChemistryInstitute of, Pharmacy and Food ChemistryUniversity of WürzburgAm Hubland97074WürzburgGermany
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28
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Moroni B, Angelone S, Pérez JM, Molinar Min AR, Pasquetti M, Tizzani P, López-Olvera JR, Valldeperes M, Granados JE, Lavín S, Mentaberre G, Camacho-Sillero L, Martínez-Carrasco C, Oleaga A, Candela M, Meneguz PG, Rossi L. Sarcoptic mange in wild ruminants in Spain: solving the epidemiological enigma using microsatellite markers. Parasit Vectors 2021; 14:171. [PMID: 33743796 PMCID: PMC7981868 DOI: 10.1186/s13071-021-04673-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 01/04/2021] [Accepted: 03/05/2021] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND In Spain, sarcoptic mange was first described in native wildlife in 1987 in Cazorla Natural Park, causing the death of nearly 95% of the local native population of Iberian ibex (Capra pyrenaica). Since then, additional outbreaks have been identified in several populations of ibex and other wild ungulate species throughout the country. Although the first epizootic outbreak in wildlife was attributed to the introduction of an infected herd of domestic goats, the origin and the cause of its persistence remain unclear. The main aims of this study are to understand (i) the number of Sarcoptes scabiei "strains" circulating in wild ruminant populations in Spain, and (ii) the molecular epidemiological relationships between S. scabiei and its hosts. METHODS Ten Sarcoptes microsatellite markers were used to characterize the genetic structure of 266 mites obtained from skin scrapings of 121 mangy wild ruminants between 2011 and 2019 from 11 areas in Spain. RESULTS Seventy-three different alleles and 37 private alleles were detected. The results of this study show the existence of three genetic strains of S. scabiei in the wild ruminant populations investigated. While two genetic clusters of S. scabiei were host- and geography-related, one cluster included multi-host mites deriving from geographically distant populations. CONCLUSIONS The molecular epidemiological study of S. scabiei in wild ruminants in Spain indicates that the spreading and persistence of the parasite may be conditioned by host species community composition and the permissiveness of each host population/community to the circulation of individual "strains," among other factors. Wildlife-livestock interactions and the role of human-driven introduction or trade of wild and domestic animals should be better investigated to prevent further spread of sarcoptic mange in as yet unaffected natural areas of the Iberian Peninsula.
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Affiliation(s)
- Barbara Moroni
- Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy
| | - Samer Angelone
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
| | - Jesús M. Pérez
- Department of Animal and Plant Biology, and Ecology, University of Jaén, Campus Las Lagunillas, Jaén, Spain
- Wildlife Ecology & Health Group (WE&H), and Departament de Medicina I Cirurgia Animals, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Anna Rita Molinar Min
- Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy
| | - Mario Pasquetti
- Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy
| | - Paolo Tizzani
- Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy
| | - Jorge Ramón López-Olvera
- Wildlife Ecology & Health Group (WE&H), and Departament de Medicina I Cirurgia Animals, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Marta Valldeperes
- Wildlife Ecology & Health Group (WE&H), and Departament de Medicina I Cirurgia Animals, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - José Enrique Granados
- Wildlife Ecology & Health Group (WE&H), and Parque Nacional Y Parque Natural Sierra Nevada, Granada, Spain
| | - Santiago Lavín
- Wildlife Ecology & Health Group (WE&H), and Departament de Medicina I Cirurgia Animals, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Gregorio Mentaberre
- Wildlife Ecology & Health Group (WE&H), and Departament de Ciència Animal, Escola Tècnica Superior D’Enginyeria Agraria, Universitat de Lleida, Lleida, Spain
| | - Leonor Camacho-Sillero
- Programa Vigilancia Epidemiológica Fauna Silvestre, Consejería Agricultura, Ganadería, Pesca y Desarrollo Sostenible, Junta de Andalucía, Málaga, Spain
| | - Carlos Martínez-Carrasco
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain
| | - Alvaro Oleaga
- S.E.R.P.A., Sociedad de Servicios del Principado de Asturias S.A., Gijón, Spain
| | - Mónica Candela
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain
| | - Pier Giuseppe Meneguz
- Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy
| | - Luca Rossi
- Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy
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29
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Mirani F, Maffini A, Casamichiela F, Pazzaglia A, Formenti A, Dellasega D, Russo V, Vavassori D, Bortot D, Huault M, Zeraouli G, Ospina V, Malko S, Apiñaniz JI, Pérez-Hernández JA, De Luis D, Gatti G, Volpe L, Pola A, Passoni M. Integrated quantitative PIXE analysis and EDX spectroscopy using a laser-driven particle source. Sci Adv 2021; 7:7/3/eabc8660. [PMID: 33523900 PMCID: PMC7810378 DOI: 10.1126/sciadv.abc8660] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 11/30/2020] [Indexed: 06/12/2023]
Abstract
Among the existing elemental characterization techniques, particle-induced x-ray emission (PIXE) and energy-dispersive x-ray (EDX) spectroscopy are two of the most widely used in different scientific and technological fields. Here, we present the first quantitative laser-driven PIXE and laser-driven EDX experimental investigation performed at the Centro de Láseres Pulsados in Salamanca. Thanks to their potential for compactness and portability, laser-driven particle sources are very appealing for materials science applications, especially for materials analysis techniques. We demonstrate the possibility to exploit the x-ray signal produced by the co-irradiation with both electrons and protons to identify the elements in the sample. We show that, using the proton beam only, we can successfully obtain quantitative information about the sample structure through laser-driven PIXE analysis. These results pave the way toward the development of a compact and multifunctional apparatus for the elemental analysis of materials based on a laser-driven particle source.
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Affiliation(s)
- F Mirani
- Politecnico di Milano, Via Ponzio 34/3, I-20133 Milan, Italy.
| | - A Maffini
- Politecnico di Milano, Via Ponzio 34/3, I-20133 Milan, Italy
| | - F Casamichiela
- Politecnico di Milano, Via Ponzio 34/3, I-20133 Milan, Italy
| | - A Pazzaglia
- Politecnico di Milano, Via Ponzio 34/3, I-20133 Milan, Italy
| | - A Formenti
- Politecnico di Milano, Via Ponzio 34/3, I-20133 Milan, Italy
| | - D Dellasega
- Politecnico di Milano, Via Ponzio 34/3, I-20133 Milan, Italy
| | - V Russo
- Politecnico di Milano, Via Ponzio 34/3, I-20133 Milan, Italy
| | - D Vavassori
- Politecnico di Milano, Via Ponzio 34/3, I-20133 Milan, Italy
| | - D Bortot
- Politecnico di Milano, Via Ponzio 34/3, I-20133 Milan, Italy
| | - M Huault
- Centro de Laseres Pulsados (CLPU), Edicio M5. Parque Científico. C/ Adaja, 8. Villamayor, 37185 Salamanca, Spain
- Universidad de Salamanca, Patio de Escuelas 1, 37008 Salamanca, Spain
| | - G Zeraouli
- Centro de Laseres Pulsados (CLPU), Edicio M5. Parque Científico. C/ Adaja, 8. Villamayor, 37185 Salamanca, Spain
- Universidad de Salamanca, Patio de Escuelas 1, 37008 Salamanca, Spain
| | - V Ospina
- Centro de Laseres Pulsados (CLPU), Edicio M5. Parque Científico. C/ Adaja, 8. Villamayor, 37185 Salamanca, Spain
- Universidad de Salamanca, Patio de Escuelas 1, 37008 Salamanca, Spain
| | - S Malko
- Centro de Laseres Pulsados (CLPU), Edicio M5. Parque Científico. C/ Adaja, 8. Villamayor, 37185 Salamanca, Spain
- Universidad de Salamanca, Patio de Escuelas 1, 37008 Salamanca, Spain
| | - J I Apiñaniz
- Centro de Laseres Pulsados (CLPU), Edicio M5. Parque Científico. C/ Adaja, 8. Villamayor, 37185 Salamanca, Spain
| | - J A Pérez-Hernández
- Centro de Laseres Pulsados (CLPU), Edicio M5. Parque Científico. C/ Adaja, 8. Villamayor, 37185 Salamanca, Spain
| | - D De Luis
- Centro de Laseres Pulsados (CLPU), Edicio M5. Parque Científico. C/ Adaja, 8. Villamayor, 37185 Salamanca, Spain
| | - G Gatti
- Centro de Laseres Pulsados (CLPU), Edicio M5. Parque Científico. C/ Adaja, 8. Villamayor, 37185 Salamanca, Spain
| | - L Volpe
- Centro de Laseres Pulsados (CLPU), Edicio M5. Parque Científico. C/ Adaja, 8. Villamayor, 37185 Salamanca, Spain
- Laser-Plasma Chair at the University of Salamanca, Salamanca, Spain
| | - A Pola
- Politecnico di Milano, Via Ponzio 34/3, I-20133 Milan, Italy
| | - M Passoni
- Politecnico di Milano, Via Ponzio 34/3, I-20133 Milan, Italy.
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30
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Scheenstra MR, Martínez-Botía P, Acebes-Huerta A, Brouwer RWW, Caballero-Sánchez N, Gillemans N, De Bleser P, Nota B, De Cuyper IM, Salunkhe V, Woltman AM, van de Laar L, Rijkers E, Demmers JAA, van IJcken WFJ, Philipsen S, van den Berg TK, Kuijpers TW, Gutiérrez L. Comparison of the PU.1 transcriptional regulome and interactome in human and mouse inflammatory dendritic cells. J Leukoc Biol 2020; 110:735-751. [PMID: 33289106 DOI: 10.1002/jlb.6a1219-711rrr] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 12/11/2019] [Revised: 11/18/2020] [Accepted: 11/18/2020] [Indexed: 12/17/2022] Open
Abstract
Dendritic cells (DCs) are key immune modulators and are able to mount immune responses or tolerance. DC differentiation and activation imply a plethora of molecular and cellular responses, including transcriptional changes. PU.1 is a highly expressed transcription factor in DCs and coordinates relevant aspects of DC biology. Due to their role as immune regulators, DCs pose as a promising immunotherapy tool. However, some of their functional features, such as survival, activation, or migration, are compromised due to the limitations to simulate in vitro the physiologic DC differentiation process. A better knowledge of transcriptional programs would allow the identification of potential targets for manipulation with the aim of obtaining "qualified" DCs for immunotherapy purposes. Most of the current knowledge regarding DC biology derives from studies using mouse models, which not always find a parallel in human. In the present study, we dissect the PU.1 transcriptional regulome and interactome in mouse and human DCs, in the steady state or LPS activated. The PU.1 transcriptional regulome was identified by performing PU.1 chromatin immunoprecipitation followed by high-throughput sequencing and pairing these data with RNAsequencing data. The PU.1 interactome was identified by performing PU.1 immunoprecipitation followed by mass spectrometry analysis. Our results portray PU.1 as a pivotal factor that plays an important role in the regulation of genes required for proper DC activation and function, and assures the repression of nonlineage genes. The interspecies differences between human and mouse DCs are surprisingly substantial, highlighting the need to study the biology of human DCs.
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Affiliation(s)
- Maaike R Scheenstra
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center (AMC), University of Amsterdam, Amsterdam, The Netherlands
- Division of Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Utrecht University, Utrecht, The Netherlands
| | | | - Andrea Acebes-Huerta
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Rutger W W Brouwer
- Center for Biomics, Erasmus MC, Rotterdam, The Netherlands
- Department of Cell Biology, Erasmus MC, Rotterdam, The Netherlands
| | | | - Nynke Gillemans
- Department of Cell Biology, Erasmus MC, Rotterdam, The Netherlands
| | - Pieter De Bleser
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- VIB Center for Inflammation Research, Data Mining and Modeling for Biomedicine, Ghent, Belgium
| | - Benjamin Nota
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center (AMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Iris M De Cuyper
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center (AMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Vishal Salunkhe
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center (AMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Andrea M Woltman
- Department of Gastroenterology and Hepatology, Erasmus MC, Rotterdam, The Netherlands
- Current Address: Institute of Medical Education Research Rotterdam, Erasmus MC, Rotterdam, The Netherlands
| | - Lianne van de Laar
- Department of Gastroenterology and Hepatology, Erasmus MC, Rotterdam, The Netherlands
| | | | | | - Wilfred F J van IJcken
- Center for Biomics, Erasmus MC, Rotterdam, The Netherlands
- Department of Cell Biology, Erasmus MC, Rotterdam, The Netherlands
| | - Sjaak Philipsen
- Department of Cell Biology, Erasmus MC, Rotterdam, The Netherlands
| | - Timo K van den Berg
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center (AMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Taco W Kuijpers
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center (AMC), University of Amsterdam, Amsterdam, The Netherlands
- Laboratory of Immunotherapy, Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Vrije University, Amsterdam, The Netherlands
| | - Laura Gutiérrez
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center (AMC), University of Amsterdam, Amsterdam, The Netherlands
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
- University of Oviedo, Oviedo, Spain
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31
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Quintela-Fandino M, Holgado E, Manso L, Morales S, Bermejo B, Colomer R, Apala JV, Blanco R, Muñoz M, Caleiras E, Iranzo V, Martinez M, Dominguez O, Hornedo J, Gonzalez-Cortijo L, Cortes J, Gasol Cudos A, Malon D, Lopez-Alonso A, Moreno-Ortíz MC, Mouron S, Mañes S. Immuno-priming durvalumab with bevacizumab in HER2-negative advanced breast cancer: a pilot clinical trial. Breast Cancer Res 2020; 22:124. [PMID: 33176887 PMCID: PMC7661209 DOI: 10.1186/s13058-020-01362-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 10/25/2020] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Preclinical research suggests that the efficacy of immune checkpoint inhibitors in breast cancer can be enhanced by combining them with antiangiogenics, particularly in a sequential fashion. We sought to explore the efficacy and biomarkers of combining the anti-PD-L1 durvalumab plus the antiangiogenic bevacizumab after bevacizumab monotherapy for advanced HER2-negative breast cancer. METHODS Patients had advanced HER2-negative disease that progressed while receiving single-agent bevacizumab maintenance as a part of a previous chemotherapy plus bevacizumab regimen. Treatment consisted of bi-weekly durvalumab plus bevacizumab (10 mg/kg each i.v.). Peripheral-blood mononuclear cells (PBMCs) were obtained before the first durvalumab dose and every 4 weeks and immunophenotyped by flow-cytometry. A fresh pre-durvalumab tumor biopsy was obtained; gene-expression studies and immunohistochemical staining to assess vascular normalization and characterize the immune infiltrate were conducted. Patients were classified as "non-progressors" if they had clinical benefit (SD/PR/CR) at 4 months. The co-primary endpoints were the changes in the percentage T cell subpopulations in PBMCs in progressors versus non-progressors, and PFS/OS time. RESULTS Twenty-six patients were accrued. Median PFS and OS were 3.5 and 11 months; a trend for a longer OS was detected for the hormone-positive subset (19.8 versus 7.4 months in triple-negatives; P = 0.11). Clinical benefit rate at 2 and 4 months was 60% and 44%, respectively, without significant differences between hormone-positive and triple-negative (P = 0.73). Non-progressors' tumors displayed vascular normalization features as a result of previous bevacizumab, compared with generally abnormal patterns observed in progressors. Non-progressors also showed increased T-effector and T-memory signatures and decreased TREG signatures in gene expression studies in baseline-post-bevacizumab-tumors compared with progressors. Notably, analysis of PBMC populations before durvalumab treatment was concordant with the findings in tumor samples and showed a decreased percentage of circulating TREGs in non-progressors. CONCLUSIONS This study reporting on sequential bevacizumab+durvalumab in breast cancer showed encouraging activity in a heavily pre-treated cohort. The correlative studies agree with the preclinical rationale supporting an immunopriming effect exerted by antiangiogenic treatment, probably by reducing TREGs cells both systemically and in tumor tissue. The magnitude of this benefit should be addressed in a randomized setting. TRIAL REGISTRATION (www.clinicaltrials.gov): NCT02802098 . Registered on June 16, 2020.
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MESH Headings
- Adult
- Aged
- Angiogenesis Inhibitors/administration & dosage
- Angiogenesis Inhibitors/adverse effects
- Antibodies, Monoclonal/administration & dosage
- Antibodies, Monoclonal/adverse effects
- Antineoplastic Agents, Immunological/administration & dosage
- Antineoplastic Agents, Immunological/adverse effects
- Antineoplastic Combined Chemotherapy Protocols/administration & dosage
- Antineoplastic Combined Chemotherapy Protocols/adverse effects
- B7-H1 Antigen/antagonists & inhibitors
- B7-H1 Antigen/immunology
- B7-H1 Antigen/metabolism
- Bevacizumab/administration & dosage
- Bevacizumab/adverse effects
- Breast/pathology
- Breast Neoplasms/blood
- Breast Neoplasms/drug therapy
- Breast Neoplasms/immunology
- Breast Neoplasms/pathology
- Disease Progression
- Female
- Humans
- Lymphocytes, Tumor-Infiltrating/drug effects
- Lymphocytes, Tumor-Infiltrating/immunology
- Middle Aged
- Pilot Projects
- Progression-Free Survival
- Proof of Concept Study
- Receptor, ErbB-2/analysis
- T-Lymphocytes, Regulatory/drug effects
- T-Lymphocytes, Regulatory/immunology
- T-Lymphocytes, Regulatory/metabolism
- Tumor Microenvironment/drug effects
- Tumor Microenvironment/immunology
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Affiliation(s)
- Miguel Quintela-Fandino
- Breast Cancer Clinical Research Unit - Clinical Research Program, CNIO - Spanish National Cancer Research Center, Melchor Fernandez Almagro, 3, 28029, Madrid, Spain.
- Medical Oncology Department, Hospital Universitario de Fuenlabrada, Fuenlabrada, Spain.
- Medical Oncology Department, Hospital Universitario Quiron, Pozuelo de Alarcon, Spain.
| | - Esther Holgado
- Medical Oncology Department, Hospital Universitario Ramon y Cajal, Madrid, Spain
| | - Luis Manso
- Medical Oncology Department, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Serafin Morales
- Medical Oncology Department, Hospital Universitari Arnau Vilanova, Lleida, Spain
| | - Begoña Bermejo
- Medical Oncology Department, Hospital Clínico Universitario, Valencia, Spain
- INCLIVA, Valencia, Spain
- CIBERONC, Instituto Carlos III, Madrid, Spain
| | - Ramon Colomer
- Breast Cancer Clinical Research Unit - Clinical Research Program, CNIO - Spanish National Cancer Research Center, Melchor Fernandez Almagro, 3, 28029, Madrid, Spain
- Medical Oncology Department, Hospital Universitario La Princesa, Madrid, Spain
- Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - Juan V Apala
- Breast Cancer Clinical Research Unit - Clinical Research Program, CNIO - Spanish National Cancer Research Center, Melchor Fernandez Almagro, 3, 28029, Madrid, Spain
- Medical Oncology Department, Hospital Universitario de Fuenlabrada, Fuenlabrada, Spain
| | - Raquel Blanco
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, Darwin, 3, 28049, Madrid, Spain
| | - Manuel Muñoz
- Breast Cancer Clinical Research Unit - Clinical Research Program, CNIO - Spanish National Cancer Research Center, Melchor Fernandez Almagro, 3, 28029, Madrid, Spain
| | - Eduardo Caleiras
- Histopathology Core Unit - Biotechnology Program, CNIO - Spanish National Cancer Research Center, Madrid, Spain
| | - Vega Iranzo
- CIBERONC, Instituto Carlos III, Madrid, Spain
- Medical Oncology Department, Hospital General Universitario de Valencia, Valencia, Spain
- Medicine Department, Universitat de Valencia, Valencia, Spain
| | - Mario Martinez
- Pathology Department, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Orlando Dominguez
- Genomics Core Unit - Biotechnology Program, CNIO - Spanish National Cancer Research Center, Madrid, Spain
| | - Javier Hornedo
- Medical Oncology Department, Hospital Universitario Quiron, Pozuelo de Alarcon, Spain
| | | | - Javier Cortes
- ION Institute of Oncology, Quironsalud Group - Madrid & Barcelona, Barcelona, Spain
- Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Ariadna Gasol Cudos
- Medical Oncology Department, Hospital Universitari Arnau Vilanova, Lleida, Spain
| | - Diego Malon
- Medical Oncology Department, Hospital Universitario de Fuenlabrada, Fuenlabrada, Spain
| | - Antonio Lopez-Alonso
- Breast Cancer Clinical Research Unit - Clinical Research Program, CNIO - Spanish National Cancer Research Center, Melchor Fernandez Almagro, 3, 28029, Madrid, Spain
| | - María C Moreno-Ortíz
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, Darwin, 3, 28049, Madrid, Spain
| | - Silvana Mouron
- Breast Cancer Clinical Research Unit - Clinical Research Program, CNIO - Spanish National Cancer Research Center, Melchor Fernandez Almagro, 3, 28029, Madrid, Spain
| | - Santos Mañes
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, Darwin, 3, 28049, Madrid, Spain.
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Calvario G, Alarcón TE, Dalmau O, Sierra B, Hernandez C. An Agave Counting Methodology Based on Mathematical Morphology and Images Acquired through Unmanned Aerial Vehicles. Sensors (Basel) 2020; 20:E6247. [PMID: 33147788 PMCID: PMC7663004 DOI: 10.3390/s20216247] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/24/2020] [Accepted: 10/28/2020] [Indexed: 11/17/2022]
Abstract
Blue agave is an important commercial crop in Mexico, and it is the main source of the traditional mexican beverage known as tequila. The variety of blue agave crop known as Tequilana Weber is a crucial element for tequila agribusiness and the agricultural economy in Mexico. The number of agave plants in the field is one of the main parameters for estimating production of tequila. In this manuscript, we describe a mathematical morphology-based algorithm that addresses the agave automatic counting task. The proposed methodology was applied to a set of real images collected using an Unmanned Aerial Vehicle equipped with a digital Red-Green-Blue (RGB) camera. The number of plants automatically identified in the collected images was compared to the number of plants counted by hand. Accuracy of the proposed algorithm depended on the size heterogeneity of plants in the field and illumination. Accuracy ranged from 0.8309 to 0.9806, and performance of the proposed algorithm was satisfactory.
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Affiliation(s)
- Gabriela Calvario
- Department of Electronics, Systems, and Informatics, ITESO—The Jesuit University of Guadalajara, Tlaquepaque, Jalisco 45604, Mexico;
| | - Teresa E. Alarcón
- Departamento de Ciencias Computacionales e Ingenierías, Centro Universitario de los Valles, Ameca, Jalisco 46600, Mexico
| | - Oscar Dalmau
- Centro de Investigación en Matemáticas, Guanajuato 36023, Mexico;
| | - Basilio Sierra
- Departamento de Ciencias de la Computación e Inteligencia Artificial, Universidad del País Vasco UPV/EHU, 20018 Donostia-San Sebastián, Spain; (B.S.); (C.H.)
| | - Carmen Hernandez
- Departamento de Ciencias de la Computación e Inteligencia Artificial, Universidad del País Vasco UPV/EHU, 20018 Donostia-San Sebastián, Spain; (B.S.); (C.H.)
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences, CITAB, Universidade de Trás-os-Montes e Alto Douro, UTAD, 5000-801 Vila Real, Portugal
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Zanelli D, Candotto Carniel F, Garrido M, Fortuna L, Nepi M, Cai G, Del Casino C, Vázquez E, Prato M, Tretiach M. Effects of Few-Layer Graphene on the Sexual Reproduction of Seed Plants: An In Vivo Study with Cucurbita pepo L. Nanomaterials (Basel) 2020; 10:E1877. [PMID: 32961680 PMCID: PMC7560101 DOI: 10.3390/nano10091877] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/28/2020] [Accepted: 09/15/2020] [Indexed: 11/16/2022]
Abstract
Products containing graphene-related materials (GRMs) are becoming quite common, raising concerns for environmental safety. GRMs have varying effects on plants, but their impact on the sexual reproduction process is largely unknown. In this study, the effects of few-layer graphene (FLG) and a similarly layered phyllosilicate, muscovite mica (MICA), were tested in vivo on the reproductive structures, i.e., pollen and stigma, of Cucurbita pepo L. ssp. pepo 'greyzini' (summer squash, zucchini). Pollen was exposed to FLG or MICA, after careful physical-chemical characterization, at concentrations of 0.5 and 2 mg of nanomaterial (NM) per g of pollen for up to six hours. Following this, pollen viability was tested. Stigmas were exposed to FLG or MICA for three hours and then analyzed by environmental scanning electron microscopy to verify possible alterations to their surface. Stigmas were then hand-pollinated to verify the effects of the two NMs on pollen adhesion and in vivo pollen germination. FLG and MICA altered neither pollen viability nor the stigmatic surface. However, both NMs equivalently decreased pollen adhesion and in vivo germination compared with untreated stigmas. These effects deserve further attention as they could impact on production of fruits and seeds. Importantly, it was shown that FLG is as safe as a naturally occurring nanomaterial.
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Affiliation(s)
- Davide Zanelli
- Department of Life Sciences, University of Trieste, via L. Giorgieri 10, I-34127 Trieste, Italy; (D.Z.); (M.T.)
| | - Fabio Candotto Carniel
- Department of Life Sciences, University of Trieste, via L. Giorgieri 10, I-34127 Trieste, Italy; (D.Z.); (M.T.)
| | - Marina Garrido
- Department of Chemical and Pharmaceutical Science, University of Trieste, via L. Giorgieri 1, I-34127 Trieste, Italy; (M.G.); (L.F.); (M.P.)
| | - Lorenzo Fortuna
- Department of Chemical and Pharmaceutical Science, University of Trieste, via L. Giorgieri 1, I-34127 Trieste, Italy; (M.G.); (L.F.); (M.P.)
| | - Massimo Nepi
- Department of Life Sciences, University of Siena, via P. A. Mattioli 4, I-53100 Siena, Italy; (M.N.); (G.C.); (C.D.C.)
| | - Giampiero Cai
- Department of Life Sciences, University of Siena, via P. A. Mattioli 4, I-53100 Siena, Italy; (M.N.); (G.C.); (C.D.C.)
| | - Cecilia Del Casino
- Department of Life Sciences, University of Siena, via P. A. Mattioli 4, I-53100 Siena, Italy; (M.N.); (G.C.); (C.D.C.)
| | - Ester Vázquez
- Department of Organic Chemistry, Faculty of Chemical Science and Technology, University of Castilla-La Mancha, Av. Camilo José Cela, s/n, E-13005 Ciudad Real, Spain;
- Instituto Regional de Investigación Científica Aplicada (IRICA), Universidad de Castilla-La Mancha, E-13071 Ciudad Real, Spain
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Science, University of Trieste, via L. Giorgieri 1, I-34127 Trieste, Italy; (M.G.); (L.F.); (M.P.)
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramón 182, 20014 Donostia San Sebastián, Spain
- Basque Foundation for Science, Ikerbasque, 48013 Bilbao, Spain
| | - Mauro Tretiach
- Department of Life Sciences, University of Trieste, via L. Giorgieri 10, I-34127 Trieste, Italy; (D.Z.); (M.T.)
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Asyhari AT, Koch T, Guillén i Fàbregas A. Nearest Neighbor Decoding and Pilot-Aided Channel Estimation for Fading Channels. Entropy (Basel) 2020; 22:E971. [PMID: 33286740 PMCID: PMC7650786 DOI: 10.3390/e22090971] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/21/2020] [Accepted: 08/26/2020] [Indexed: 12/05/2022]
Abstract
We study the information rates of noncoherent, stationary, Gaussian, and multiple-input multiple-output (MIMO) flat-fading channels that are achievable with nearest neighbor decoding and pilot-aided channel estimation. In particular, we investigate the behavior of these achievable rates in the limit as the signal-to-noise ratio (SNR) tends to infinity by analyzing the capacity pre-log, which is defined as the limiting ratio of the capacity to the logarithm of the SNR as the SNR tends to infinity. We demonstrate that a scheme estimating the channel using pilot symbols and detecting the message using nearest neighbor decoding (while assuming that the channel estimation is perfect) essentially achieves the capacity pre-log of noncoherent multiple-input single-output flat-fading channels, and it essentially achieves the best so far known lower bound on the capacity pre-log of noncoherent MIMO flat-fading channels. Extending the analysis to fading multiple-access channels reveals interesting relationships between the number of antennas and Doppler bandwidth in the comparative performance of joint transmission and time division multiple-access.
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Affiliation(s)
- A. Taufiq Asyhari
- School of Computing and Digital Technology, Birmingham City University, Millennium Point, Birmingham B4 7XG, UK
| | - Tobias Koch
- Signal Theory and Communications Department, Universidad Carlos III de Madrid, 28911 Leganés, Spain;
- Gregorio Marañón Health Research Institute, 28007 Madrid, Spain
| | - Albert Guillén i Fàbregas
- Department of Information and Communication Technologies, Universitat Pompeu Fabra, 08018 Barcelona, Spain;
- Institució Catalana de Recerca i Estudis Avançats (ICREA), 08010 Barcelona, Spain
- Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, UK
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35
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González-Paramás AM, Brighenti V, Bertoni L, Marcelloni L, Ayuda-Durán B, González-Manzano S, Pellati F, Santos-Buelga C. Assessment of the In Vivo Antioxidant Activity of an Anthocyanin-Rich Bilberry Extract Using the Caenorhabditis elegans Model. Antioxidants (Basel) 2020; 9:E509. [PMID: 32531930 PMCID: PMC7346225 DOI: 10.3390/antiox9060509] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/02/2020] [Accepted: 06/08/2020] [Indexed: 12/20/2022] Open
Abstract
Anthocyanins have been associated with several health benefits, although the responsible mechanisms are not well established yet. In the present study, an anthocyanin-rich extract from bilberry (Vaccinium myrtillus L.) was tested in order to evaluate its capacity to modulate reactive oxygen species (ROS) production and resistance to thermally induced oxidative stress, using the nematode Caenorhabditis elegans as an in vivo model. The assays were carried out with the wild-type N2 strain and the mutant strains daf-16(mu86) I and hsf-1(sy441), which were grown in the presence of two anthocyanin extract concentrations (5 and 10 μg/mL in the culture medium) and further subjected to thermal stress. The treatment with the anthocyanin extract at 5 μg/mL showed protective effects on the accumulation of ROS and increased thermal resistance in C. elegans, both in stressed and non-stressed young and aged worms. However, detrimental effects were observed in nematodes treated with 10 μg/mL, leading to a higher worm mortality rate compared to controls, which was interpreted as a hormetic response. These findings suggested that the effects of the bilberry extract on C. elegans might not rely on its direct antioxidant capacity, but other mechanisms could also be involved. Additional assays were performed in two mutant strains with loss-of-function for DAF-16 (abnormal DAuer Formation factor 16) and HSF-1 (Heat Shock Factor 1) transcription factors, which act downstream of the insulin/insulin like growth factor-1 (IGF-1) signaling pathway. The results indicated that the modulation of these factors could be behind the improvement in the resistance against thermal stress produced by bilberry anthocyanins in young individuals, whereas they do not totally explain the effects produced in worms in the post-reproductive development stage. Further experiments are needed to continue uncovering the mechanisms behind the biological effects of anthocyanins in living organisms, as well as to establish whether they fall within the hormesis concept.
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Affiliation(s)
- Ana M. González-Paramás
- Grupo de Investigación en Polifenoles, Unidad de Nutrición y Bromatología, Facultad de Farmacia, Universidad de Salamanca, Campus Miguel de Unamuno, 37007 Salamanca, Spain; (A.M.G.-P.); (B.A.-D.); (S.G.-M.)
| | - Virginia Brighenti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy; (V.B.); (L.B.); (L.M.)
| | - Laura Bertoni
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy; (V.B.); (L.B.); (L.M.)
| | - Laura Marcelloni
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy; (V.B.); (L.B.); (L.M.)
| | - Begoña Ayuda-Durán
- Grupo de Investigación en Polifenoles, Unidad de Nutrición y Bromatología, Facultad de Farmacia, Universidad de Salamanca, Campus Miguel de Unamuno, 37007 Salamanca, Spain; (A.M.G.-P.); (B.A.-D.); (S.G.-M.)
| | - Susana González-Manzano
- Grupo de Investigación en Polifenoles, Unidad de Nutrición y Bromatología, Facultad de Farmacia, Universidad de Salamanca, Campus Miguel de Unamuno, 37007 Salamanca, Spain; (A.M.G.-P.); (B.A.-D.); (S.G.-M.)
| | - Federica Pellati
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy; (V.B.); (L.B.); (L.M.)
| | - Celestino Santos-Buelga
- Grupo de Investigación en Polifenoles, Unidad de Nutrición y Bromatología, Facultad de Farmacia, Universidad de Salamanca, Campus Miguel de Unamuno, 37007 Salamanca, Spain; (A.M.G.-P.); (B.A.-D.); (S.G.-M.)
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Rojas-Andrés BM, Padilla-García N, de Pedro M, López-González N, Delgado L, Albach DC, Castro M, Castro S, Loureiro J, Martínez-Ortega MM. Environmental differences are correlated with the distribution pattern of cytotypes in Veronica subsection Pentasepalae at a broad scale. Ann Bot 2020; 125:471-484. [PMID: 31677387 PMCID: PMC7442365 DOI: 10.1093/aob/mcz182] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 11/01/2019] [Indexed: 05/20/2023]
Abstract
BACKGROUND AND AIMS The distribution of cytotypes and its potential correlation with environmental variables represent a cornerstone to understanding the origin and maintenance of polyploid lineages. Although many studies have addressed this question in single species at a regional scale, only a few have attempted to decipher this enigma in groups of closely related species at a broad intercontinental geographical scale. Here, we consider approx. 20 species of a diploid-polyploid complex (Veronica subsect. Pentasepalae) of recent and rapid diversification represented in Europe and North Africa to study the frequency and distribution of cytotypes and their relationship to environmental variables. METHODS A total of 680 individuals (207 populations) were sampled. Ploidy levels were determined using flow cytometry. Ecological differentiation among cytotypes was tested using climatic and environmental variables related to temperature, precipitation, vegetation and biogeographical region, among others, and by performing univariate and multivariate (constrained principal coordinates analysis) analyses. KEY RESULTS Four ploidy levels (2x, 4x, 6x and 8x) were found and genome downsizing was observed to occur within the group. Plants of different ploidy level are ecologically differentiated, with hexaploids and octoploids occurring in wetter and colder habitats with a higher seasonality than diploids. A south to north distribution pattern was found, with diploids occupying southern refugial areas and octoploids being more frequent in northern regions of Europe above the permafrost boundary. CONCLUSIONS The distribution of cytotypes can be explained by ecological differentiation, the geographical position of refuge areas during the Quaternary climatic oscillations as well as by ice and permafrost retreat patterns. The Balkan Peninsula constitutes the most important contact zone between cytotypes. This work provides the first comprehensive ploidy screening within V. subsect. Pentasepalae at a broad scale and indicates that polyploidy and genome downsizing might have contributed to the colonization of new habitats in a recently diverged polyploid complex.
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Affiliation(s)
- Blanca M Rojas-Andrés
- Departamento de Botánica, University of Salamanca, Salamanca, Spain
- Biobanco de ADN Vegetal, University of Salamanca, Edificio Multiusos I+D+i, Calle Espejo s/n, Salamanca, Spain
- Department of Molecular Evolution and Plant Systematics & Herbarium (LZ), Institute of Biology, Leipzig University, Leipzig, Germany
| | - Nélida Padilla-García
- Departamento de Botánica, University of Salamanca, Salamanca, Spain
- Biobanco de ADN Vegetal, University of Salamanca, Edificio Multiusos I+D+i, Calle Espejo s/n, Salamanca, Spain
| | - Manuel de Pedro
- Departamento de Botánica, University of Salamanca, Salamanca, Spain
- CREAF, E-08193 Bellaterra (Cerdanyola del Vallès), Spain
| | - Noemí López-González
- Departamento de Botánica, University of Salamanca, Salamanca, Spain
- Biobanco de ADN Vegetal, University of Salamanca, Edificio Multiusos I+D+i, Calle Espejo s/n, Salamanca, Spain
| | - Luis Delgado
- Departamento de Botánica, University of Salamanca, Salamanca, Spain
| | - Dirk C Albach
- Institute of Biology and Environmental Sciences (IBU), AG Plant Biodiversity and Evolution, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany
| | - Mariana Castro
- CFE, Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas s/n, 3000-456 Coimbra, Portugal
| | - Sílvia Castro
- CFE, Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas s/n, 3000-456 Coimbra, Portugal
| | - João Loureiro
- CFE, Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas s/n, 3000-456 Coimbra, Portugal
| | - M Montserrat Martínez-Ortega
- Departamento de Botánica, University of Salamanca, Salamanca, Spain
- Biobanco de ADN Vegetal, University of Salamanca, Edificio Multiusos I+D+i, Calle Espejo s/n, Salamanca, Spain
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Campuzano S, Ruiz-Valdepeñas Montiel V, Serafín V, Yáñez-Sedeño P, Pingarrón JM. Cutting-Edge Advances in Electrochemical Affinity Biosensing at Different Molecular Level of Emerging Food Allergens and Adulterants. Biosensors (Basel) 2020; 10:E10. [PMID: 32041251 PMCID: PMC7168206 DOI: 10.3390/bios10020010] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [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] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/29/2020] [Accepted: 02/04/2020] [Indexed: 12/13/2022]
Abstract
The presence of allergens and adulterants in food, which represents a real threat to sensitized people and a loss of consumer confidence, is one of the main current problems facing society. The detection of allergens and adulterants in food, mainly at the genetic level (characteristic fragments of genes that encode their expression) or at functional level (protein biomarkers) is a complex task due to the natural interference of the matrix and the low concentration at which they are present. Methods for the analysis of allergens are mainly divided into immunological and deoxyribonucleic acid (DNA)-based assays. In recent years, electrochemical affinity biosensors, including immunosensors and biosensors based on synthetic sequences of DNA or ribonucleic acid (RNA), linear, aptameric, peptide or switch-based probes, are gaining special importance in this field because they have proved to be competitive with the methods commonly used in terms of simplicity, test time and applicability in different environments. These unique features make them highly promising analytical tools for routine determination of allergens and food adulterations at the point of care. This review article discusses the most significant trends and developments in electrochemical affinity biosensing in this field over the past two years as well as the challenges and future prospects for this technology.
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Affiliation(s)
- Susana Campuzano
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain; (V.R.-V.M.); (V.S.); (P.Y.-S.)
| | | | | | | | - José Manuel Pingarrón
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain; (V.R.-V.M.); (V.S.); (P.Y.-S.)
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López-Tocón I, Imbarack E, Soto J, Sanchez-Cortes S, Leyton P, Otero JC. Intramolecular and Metal-to-Molecule Charge Transfer Electronic Resonances in the Surface-Enhanced Raman Scattering of 1,4-Bis(( E)-2-(pyridin-4-yl)vinyl)naphthalene. Molecules 2019; 24:E4622. [PMID: 31861152 PMCID: PMC6943491 DOI: 10.3390/molecules24244622] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 11/25/2019] [Revised: 12/10/2019] [Accepted: 12/13/2019] [Indexed: 11/17/2022] Open
Abstract
Electrochemical surface-enhanced Raman scattering (SERS) of the cruciform system 1,4-bis((E)-2-(pyridin-4-yl)vinyl)naphthalene (bpyvn) was recorded on nanostructured silver surfaces at different electrode potentials by using excitation laser lines of 785 and 514.5 nm. SERS relative intensities were analyzed on the basis of the resonance Raman vibronic theory with the help of DFT calculations. The comparison between the experimental and the computed resonance Raman spectra calculated for the first five electronic states of the Ag2-bpyvn surface complex model points out that the selective enhancement of the SERS band recorded at about 1600 cm-1, under 785 nm excitation, is due to a resonant Raman process involving a photoexcited metal-to-molecule charge transfer state of the complex, while the enhancement of the 1570 cm-1 band using 514.5 nm excitation is due to an intramolecular π→π* electronic transition localized in the naphthalenyl framework, resulting in a case of surface-enhanced resonance Raman spectrum (SERRS). Thus, the enhancement of the SERS bands of bpyvn is controlled by a general chemical enhancement mechanism in which different resonance processes of the overall electronic structure of the metal-molecule system are involved.
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Affiliation(s)
- Isabel López-Tocón
- Andalucía Tech, Unidad Asociada IEM-CSIC, Departamento de Química Física, Facultad de Ciencias, Universidad de Málaga, E-29071 Málaga, Spain;
| | - Elizabeth Imbarack
- Instituto de Química, Pontificia Universidad Católica de Valparaiso, 2373223 Valparaiso, Chile; (E.I.); (P.L.)
| | - Juan Soto
- Andalucía Tech, Unidad Asociada IEM-CSIC, Departamento de Química Física, Facultad de Ciencias, Universidad de Málaga, E-29071 Málaga, Spain;
| | - Santiago Sanchez-Cortes
- Instituto de Estructura de la Materia, Consejo Superior de Investigaciones Científicas, E-28006 Madrid, Spain;
| | - Patricio Leyton
- Instituto de Química, Pontificia Universidad Católica de Valparaiso, 2373223 Valparaiso, Chile; (E.I.); (P.L.)
| | - Juan Carlos Otero
- Andalucía Tech, Unidad Asociada IEM-CSIC, Departamento de Química Física, Facultad de Ciencias, Universidad de Málaga, E-29071 Málaga, Spain;
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Yáñez-Sedeño P, González-Cortés A, Campuzano S, Pingarrón JM. Copper(I)-Catalyzed Click Chemistry as a Tool for the Functionalization of Nanomaterials and the Preparation of Electrochemical (Bio)Sensors. Sensors (Basel) 2019; 19:E2379. [PMID: 31137612 PMCID: PMC6566994 DOI: 10.3390/s19102379] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/20/2019] [Accepted: 05/22/2019] [Indexed: 01/30/2023]
Abstract
Proper functionalization of electrode surfaces and/or nanomaterials plays a crucial role in the preparation of electrochemical (bio)sensors and their resulting performance. In this context, copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) has been demonstrated to be a powerful strategy due to the high yields achieved, absence of by-products and moderate conditions required both in aqueous medium and under physiological conditions. This particular chemistry offers great potential to functionalize a wide variety of electrode surfaces, nanomaterials, metallophthalocyanines (MPcs) and polymers, thus providing electrochemical platforms with improved electrocatalytic ability and allowing the stable, reproducible and functional integration of a wide range of nanomaterials and/or different biomolecules (enzymes, antibodies, nucleic acids and peptides). Considering the rapid progress in the field, and the potential of this technology, this review paper outlines the unique features imparted by this particular reaction in the development of electrochemical sensors through the discussion of representative examples of the methods mainly reported over the last five years. Special attention has been paid to electrochemical (bio)sensors prepared using nanomaterials and applied to the determination of relevant analytes at different molecular levels. Current challenges and future directions in this field are also briefly pointed out.
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Affiliation(s)
- P Yáñez-Sedeño
- Department of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, 28040 Madrid, Spain.
| | - A González-Cortés
- Department of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, 28040 Madrid, Spain.
| | - S Campuzano
- Department of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, 28040 Madrid, Spain.
| | - J M Pingarrón
- Department of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, 28040 Madrid, Spain.
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Campuzano S, Yáñez-Sedeño P, Pingarrón JM. Carbon Dots and Graphene Quantum Dots in Electrochemical Biosensing. Nanomaterials (Basel) 2019; 9:E634. [PMID: 31010125 PMCID: PMC6523669 DOI: 10.3390/nano9040634] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 04/16/2019] [Accepted: 04/17/2019] [Indexed: 12/11/2022]
Abstract
Graphene quantum dots (GQDs) and carbon dots (CDs) are among the latest research frontiers in carbon-based nanomaterials. They provide interesting attributes to current electrochemical biosensing due to their intrinsic low toxicity, high solubility in many solvents, excellent electronic properties, robust chemical inertness, large specific surface area, abundant edge sites for functionalization, great biocompatibility, low cost, and versatility, as well as their ability for modification with attractive surface chemistries and other modifiers/nanomaterials. In this review article, the use of GQDs and CDs as signal tags or electrode surface modifiers to develop electrochemical biosensing strategies is critically discussed through the consideration of representative approaches reported in the last five years. The advantages and disadvantages arising from the use of GQDs and CDs in this context are outlined together with the still required work to fulfil the characteristics needed to achieve suitable electrochemical enzymatic and affinity biosensors with applications in the real world.
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Affiliation(s)
- Susana Campuzano
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - Paloma Yáñez-Sedeño
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - José M Pingarrón
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
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Arriagada F, Günther G, Nos J, Nonell S, Olea-Azar C, Morales J. Antioxidant Nanomaterial Based on Core⁻Shell Silica Nanospheres with Surface-Bound Caffeic Acid: A Promising Vehicle for Oxidation-Sensitive Drugs. Nanomaterials (Basel) 2019; 9:E214. [PMID: 30736331 PMCID: PMC6409729 DOI: 10.3390/nano9020214] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 01/30/2019] [Accepted: 02/01/2019] [Indexed: 01/13/2023]
Abstract
The design of efficient, biocompatible, and easily prepared vehicles for drug delivery is a subject of great interest for medicine and pharmaceutical sciences. To achieve the above goals, surface functionalization is critical. Here, we report a hybrid nanocarrier consisting of core⁻shell silica nanospheres and the antioxidant caffeic acid linked to the surface, to evaluate their in vitro antioxidant capacity, their capability to protect oxidation-sensitive compounds incorporated in nanoparticles, and to study the interaction with bovine serum albumin protein. The results show that the radical-scavenging activity of immobilized caffeic acid is attenuated in the silica nanospheres; however, other antioxidant properties such as Fe2+-chelating activity and singlet oxygen quenching are enhanced. In addition, caffeic acid is protected from binding to proteins by the nanoparticle, suggesting that this nanosystem is more likely to maintain the antioxidant activity of caffeic acid in biological media. Finally, the natural antioxidant barrier on the nanocarrier is able to delay the degradation of a compound incorporated into this nanovehicle. Considering all findings, this work proposes a suitable tool for pharmaceutical and cosmetic industries as an antioxidant nanocarrier for oxidation-sensitive drugs.
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Affiliation(s)
- Francisco Arriagada
- Departamento de Ciencias y Tecnología Farmacéuticas, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago 8380494, Chile.
| | - Germán Günther
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago 8380494, Chile.
| | - Jaume Nos
- Institut Químic de Sarrià (IQS), University Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain.
| | - Santi Nonell
- Institut Químic de Sarrià (IQS), University Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain.
| | - Claudio Olea-Azar
- Departamento de Química Inorgánica y Analítica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago 8380494, Chile.
| | - Javier Morales
- Departamento de Ciencias y Tecnología Farmacéuticas, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago 8380494, Chile.
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Abstract
Contents Summary 731 I. Biotic interactions in the context of genetic, epigenetic and environmental diversity 731 II. Biotic interactions affect epigenetic configuration 732 III. Plant epigenetic configuration influences biotic interactions 733 IV. Epigenetic memory in the context of biotic interactions 734 V. Conclusions and future research 735 Acknowledgements 735 Author contributions 735 References 735 SUMMARY: Plants are hubs of a wide range of biotic interactions with mutualist and antagonist animals, microbes and neighboring plants. Because the quality and intensity of those relationships can change over time, a fast and reversible response to stress is required. Here, we review recent studies on the role of epigenetic factors such as DNA methylation and histone modifications in modulating plant biotic interactions, and discuss the state of knowledge regarding their potential role in memory and priming. Moreover, we provide an overview of strategies to investigate the contribution of epigenetics to environmentally induced phenotypic changes in an ecological context, highlighting possible transitions from whole-genome high-resolution analyses in plant model organisms to informative reduced representation analyses in genomically less accessible species.
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Affiliation(s)
- Conchita Alonso
- Estación Biológica de DoñanaConsejo Superior de Investigaciones Científicas (CSIC)Av. Américo Vespucio 26Sevilla41092Spain
| | - Daniela Ramos‐Cruz
- Gregor Mendel Institute of Molecular Plant BiologyAustrian Academy of SciencesVienna Biocenter (VBC)Dr. Bohr Gasse 3Vienna1030Austria
| | - Claude Becker
- Gregor Mendel Institute of Molecular Plant BiologyAustrian Academy of SciencesVienna Biocenter (VBC)Dr. Bohr Gasse 3Vienna1030Austria
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Diaz‐Ruiz A, Lanasa M, Garcia J, Mora H, Fan F, Martin‐Montalvo A, Di Francesco A, Calvo‐Rubio M, Salvador‐Pascual A, Aon MA, Fishbein KW, Pearson KJ, Villalba JM, Navas P, Bernier M, de Cabo R. Overexpression of CYB5R3 and NQO1, two NAD + -producing enzymes, mimics aspects of caloric restriction. Aging Cell 2018; 17:e12767. [PMID: 29706024 PMCID: PMC6052403 DOI: 10.1111/acel.12767] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [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] [Accepted: 03/18/2018] [Indexed: 12/19/2022] Open
Abstract
Calorie restriction (CR) is one of the most robust means to improve health and survival in model organisms. CR imposes a metabolic program that leads to increased stress resistance and delayed onset of chronic diseases, including cancer. In rodents, CR induces the upregulation of two NADH-dehydrogenases, namely NAD(P)H:quinone oxidoreductase 1 (Nqo1) and cytochrome b5 reductase 3 (Cyb5r3), which provide electrons for energy metabolism. It has been proposed that this upregulation may be responsible for some of the beneficial effects of CR, and defects in their activity are linked to aging and several age-associated diseases. However, it is unclear whether changes in metabolic homeostasis solely through upregulation of these NADH-dehydrogenases have a positive impact on health and survival. We generated a mouse that overexpresses both metabolic enzymes leading to phenotypes that resemble aspects of CR including a modest increase in lifespan, greater physical performance, a decrease in chronic inflammation, and, importantly, protection against carcinogenesis, one of the main hallmarks of CR. Furthermore, these animals showed an enhancement of metabolic flexibility and a significant upregulation of the NAD+ /sirtuin pathway. The results highlight the importance of these NAD+ producers for the promotion of health and extended lifespan.
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Affiliation(s)
- Alberto Diaz‐Ruiz
- Translational Gerontology BranchNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
- Nutritional Interventions Group, Precision Nutrition and AgingInstitute IMDEA FoodMadridSpain
| | - Michael Lanasa
- Translational Gerontology BranchNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Joseph Garcia
- Translational Gerontology BranchNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Hector Mora
- Translational Gerontology BranchNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Frances Fan
- Translational Gerontology BranchNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Alejandro Martin‐Montalvo
- Translational Gerontology BranchNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Andrea Di Francesco
- Translational Gerontology BranchNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Miguel Calvo‐Rubio
- Department of Cell Biology, Physiology and ImmunologyAgrifood Campus of International Excellence, ceiA3University of CórdobaCórdobaSpain
| | - Andrea Salvador‐Pascual
- Department of PhysiologyFundación Investigación Hospital Clínico Universitario/INCLIVAUniversity of ValenciaValenciaSpain
| | - Miguel A. Aon
- Laboratory of Cardiovascular ScienceNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Kenneth W. Fishbein
- Laboratory of Clinical InvestigationNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Kevin J. Pearson
- Graduate Center for Nutritional SciencesDepartment of Pharmacology and Nutritional SciencesUniversity of KentuckyLexingtonKYUSA
| | - Jose Manuel Villalba
- Department of Cell Biology, Physiology and ImmunologyAgrifood Campus of International Excellence, ceiA3University of CórdobaCórdobaSpain
| | - Placido Navas
- Centro Andaluz de Biologia del Desarrollo, and CIBERERInstituto de Salud Carlos IIIUniversidad Pablo de Olavide‐CSICSevillaSpain
| | - Michel Bernier
- Translational Gerontology BranchNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
| | - Rafael de Cabo
- Translational Gerontology BranchNational Institute on AgingNational Institutes of HealthBaltimoreMDUSA
- Nutritional Interventions Group, Precision Nutrition and AgingInstitute IMDEA FoodMadridSpain
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Zanocco RP, Bresoli-Obach R, Nonell S, Lemp E, Zanocco AL. Structure-activity study of furyl aryloxazole fluorescent probes for the detection of singlet oxygen. PLoS One 2018; 13:e0200006. [PMID: 29965981 PMCID: PMC6028117 DOI: 10.1371/journal.pone.0200006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 06/18/2018] [Indexed: 12/29/2022] Open
Abstract
In this study, we report the synthesis and the photochemical behavior of a series of new "click-on" fluorescent probes designed to detect singlet oxygen. They include a highly fluorescent chemical structure, an aryloxazole ring, linked to a furan moiety operating as singlet oxygen trap. Their activity depends on both the structure of the aryloxazole fluorophore and the electron-donating and electron-accepting properties of the substituents attached to the C-5 of the furan ring. All probes are selectively oxidized by singlet oxygen to give a single fluorescent product in methanol and produce negligible amounts of singlet oxygen themselves by self-sensitization. The most promising dyad, (E)-2-(2-(5-methylfuran-2-yl)vinyl)naphtho[1,2-d]oxazole, FN-6, shows outstanding reactivity and sensitivity: it traps singlet oxygen with a rate constant (5,8 ± 0.1) x 1(07) M-1 s-1 and its fluorescence increases by a factor of 500 upon reaction. Analysis of the dyads reactivity in terms of linear free energy relationships using the modified Swain and Lupton parameter F and the Fukui condensed function for the electrophilic attack, suggests that cycloaddition of singlet oxygen to the furan ring is partially concerted and possibly involves an exciplex with a "more open" structure than could be expected for a concerted cycloaddition.
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Affiliation(s)
- Renzo P. Zanocco
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | | | - Santi Nonell
- Institut Químic de Sarrià, Universitat Ramon Llull, Barcelona, Spain
| | - Else Lemp
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Antonio L. Zanocco
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
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Vázquez-Guilló R, Falco A, Martínez-Tomé MJ, Mateo CR, Herrero MA, Vázquez E, Mallavia R. Advantageous Microwave-Assisted Suzuki Polycondensation for the Synthesis of Aniline-Fluorene Alternate Copolymers as Molecular Model with Solvent Sensing Properties. Polymers (Basel) 2018; 10:E215. [PMID: 30966250 PMCID: PMC6415332 DOI: 10.3390/polym10020215] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 02/18/2018] [Accepted: 02/20/2018] [Indexed: 01/19/2023] Open
Abstract
Polymerization via Suzuki coupling under microwave (µW) irradiation has been studied for the synthesis of poly{1,4-(2/3-aminobenzene)-alt-2,7-(9,9-dihexylfluorene)} (PAF), chosen as molecular model. Briefly, µW-assisted procedures accelerated by two orders of magnitude the time required when using classical polymerization processes, and the production yield was increased (>95%). In contrast, although the sizes of the polymers that were obtained by non-conventional heating reactions were reproducible and adequate for most applications, with this methodology the molecular weight of final polymers were not increased with respect to conventional heating. Asymmetric orientation of the amine group within the monomer and the assignments of each dyad or regioregularity, whose values ranged from 38% to 95% with this molecule, were analysed using common NMR spectroscopic data. Additionally, the synthesis of a new cationic polyelectrolyte, poly{1,4-(2/3-aminobenzene)-co-alt-2,7-[9,9´-bis(6''-N,N,N-trimethylammonium-hexyl)fluorene]} dibromide (PAFAm), from poly{1,4-(2/3-aminobenzene)-co-alt-2,7-[9,9´-bis(6''-bromohexyl)fluorene]} (PAFBr) by using previously optimized conditions for µW-assisted heating procedures was reported. Finally, the characterization of the final products from these batches showed unkown interesting solvatochromic properties of the PAF molecule. The study of the solvatochromism phenomena, which was investigated as a function of the polarity of the solvents, showed a well-defined Lippert correlation, indicating that the emission shift observed in PAF might be due to its interaction with surrounding environment. Proven high sensitivity to changes of its environment makes PAF a promising candidate of sensing applications.
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Affiliation(s)
- Rebeca Vázquez-Guilló
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, E-03202 Elche, Spain.
| | - Alberto Falco
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, E-03202 Elche, Spain.
| | - M José Martínez-Tomé
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, E-03202 Elche, Spain.
| | - C Reyes Mateo
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, E-03202 Elche, Spain.
| | - María Antonia Herrero
- Departamento de Química Inorgánica, Orgánica and Bioquímica, Facultad Ciencias y Tecnologías Químicas, Universidad Castilla La Mancha, E-13071 Ciudad Real, Spain.
- Instituto Regional de Investigación Científica Aplicada (IRICA), Edificio Marie Curie, Universidad Castilla La Mancha, E-13071 Ciudad Real, Spain.
| | - Ester Vázquez
- Departamento de Química Inorgánica, Orgánica and Bioquímica, Facultad Ciencias y Tecnologías Químicas, Universidad Castilla La Mancha, E-13071 Ciudad Real, Spain.
- Instituto Regional de Investigación Científica Aplicada (IRICA), Edificio Marie Curie, Universidad Castilla La Mancha, E-13071 Ciudad Real, Spain.
| | - Ricardo Mallavia
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, E-03202 Elche, Spain.
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Abstract
BACKGROUND Plants synthesize glutamate from ammonium by the combined activity of the enzymes glutamine synthetase (GS) and glutamate synthase (GOGAT) through the glutamate synthase cycle. In plants, there are two forms of glutamate synthases that differ in their electron donors, NADH-GOGAT (EC 1.4.1.14) and Fd-GOGAT (EC 1.4.7.1), which have differential roles either in primary ammonia assimilation or in the reassimilation of ammonium from different catabolic processes. Glutamate synthases are complex iron-sulfur flavoproteins containing functional domains involved in the control and coordination of their catalytic activities in annual plants. In conifers, partial cDNA sequences for GOGATs have been isolated and used for gene expression studies. However, knowledge of the gene structure and of phylogenetic relationships with other plant enzymes is quite scant. RESULTS Technological advances in conifer megagenomes sequencing have made it possible to obtain full-length cDNA sequences encoding Fd- and NADH-GOGAT from maritime pine, as well as BAC clones containing sequences for NADH-GOGAT and Fd-GOGAT genes. In the current study, we studied the genomic organization of pine GOGAT genes, the size of their exons/introns, copy numbers in the pine genome and relationships with other plant genes. Phylogenetic analysis was performed, and the degree of preservation and dissimilarity of key domains for the catalytic activities of these enzymes in different taxa were determined. CONCLUSIONS Fd- and NADH-GOGAT are encoded by single-copy genes in the maritime pine genome. The Fd-GOGAT gene is extremely large spanning more than 330 kb and the presence of very long introns highlights the important contribution of LTR retrotransposons to the gene size in conifers. In contrast, the structure of the NADH-GOGAT gene is similar to the orthologous genes in angiosperms. Our phylogenetic analysis indicates that these two genes had different origins during plant evolution. The results provide new insights into the structure and molecular evolution of these essential genes.
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Affiliation(s)
- Ángel García-Gutiérrez
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain
| | - Francisco M. Cánovas
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain
| | - Concepción Ávila
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain
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Castán A, Fernández-Calleja V, Hernández P, Krimer DB, Schvartzman JB, Fernández-Nestosa MJ. Analysis of DNA topology of EBV minichromosomes in HEK 293 cells. PLoS One 2017; 12:e0188172. [PMID: 29186176 PMCID: PMC5706722 DOI: 10.1371/journal.pone.0188172] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 10/30/2017] [Indexed: 11/21/2022] Open
Abstract
Simian Virus 40 (SV40) and Epstein-Barr Virus (EBV) are frequently used as model systems to study DNA replication. Their genomes are both circular duplex DNAs organized in a single replicon where replication initiates at a precise site upon binding of a specific protein: the large tumor (T) antigen for SV40 and the Epstein-Barr Nuclear Antigen 1 (EBNA-1) for EBV. Despite the abundant information available on the genetics and biochemistry of the replication process in these systems, little is known about the changes in DNA topology that take place as molecules are transfected into eukaryotic cells, assembled into chromatin and bind initiator proteins to start replication. Here we used high-resolution two-dimensional agarose gel electrophoresis to demonstrate that in Human Embryonic Kidney (HEK) 293 cells, minichromosomes of almost the same mass carrying either the SV40 or the EBV replication origin showed similar topological features. The patterns were very similar regardless of the initiator proteins. We also showed that in a hybrid minichromosome, pEco3’Δ, that initiates replication from the SV40 origin, the presence of EBNA-1 and its putative binding to the EBV “family of repeats” induces no significant topological change. These observations challenge the idea that binding of EBNA-1 to oriP could induce negative supercoiling and favor a model suggesting that it binds to oriP in a two-step process where only the second step causes structural changes in a transient cell cycle specific manner.
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Affiliation(s)
- Alicia Castán
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas (CSIC), Ramiro de Maeztu 9, Madrid, Spain
| | - Vanessa Fernández-Calleja
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas (CSIC), Ramiro de Maeztu 9, Madrid, Spain
| | - Pablo Hernández
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas (CSIC), Ramiro de Maeztu 9, Madrid, Spain
| | - Dora B. Krimer
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas (CSIC), Ramiro de Maeztu 9, Madrid, Spain
| | - Jorge B. Schvartzman
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas (CSIC), Ramiro de Maeztu 9, Madrid, Spain
- * E-mail: (JBS); (JFN)
| | - María-José Fernández-Nestosa
- Scientific and Applied Computing Laboratory, Polytechnic School, National University of Asunción, SL, San Lorenzo, Paraguay
- * E-mail: (JBS); (JFN)
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Palomino-Schätzlein M, García H, Gutiérrez-Carcedo P, Pineda-Lucena A, Herance JR. Assessment of gold nanoparticles on human peripheral blood cells by metabolic profiling with 1H-NMR spectroscopy, a novel translational approach on a patient-specific basis. PLoS One 2017; 12:e0182985. [PMID: 28793337 PMCID: PMC5549967 DOI: 10.1371/journal.pone.0182985] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 07/27/2017] [Indexed: 01/03/2023] Open
Abstract
Human peripheral blood cells are relevant ex vivo models for characterizing diseases and evaluating the pharmacological effects of therapeutic interventions, as they provide a close reflection of an individual pathophysiological state. In this work, a new approach to evaluate the impact of nanoparticles on the three main fractions of human peripheral blood cells by nuclear magnetic resonance spectroscopy is shown. Thus, a comprehensive protocol has been set-up including the separation of blood cells, their in vitro treatment with nanoparticles and the extraction and characterization of metabolites by nuclear magnetic resonance. This method was applied to assess the effect of gold nanoparticles, either coated with chitosan or supported on ceria, on peripheral blood cells from healthy individuals. A clear antioxidant effect was observed for chitosan-coated gold nanoparticles by a significant increase in reduced glutathione, that was much less pronounced for gold-cerium nanoparticles. In addition, the analysis revealed significant alterations of several other pathways, which were stronger for gold-cerium nanoparticles. These results are in accordance with the toxicological data previously reported for these materials, confirming the value of the current methodology.
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Affiliation(s)
| | | | - Patricia Gutiérrez-Carcedo
- Grup de Recerca en Imatge Mèdica Molecular, Vall d’Hebron Research Institute, CIBBIM-Nanomedicine, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Antonio Pineda-Lucena
- Laboratorio de Bioquímica Estructural, Centro de Investigación Príncipe Felipe, Valencia, Spain
- Unidad de Descubrimiento de Fármacos, Instituto de Investigación Sanitaria La Fe, Hospital Universitario i Politécnico La Fe, Valencia, Spain
| | - José Raul Herance
- Grup de Recerca en Imatge Mèdica Molecular, Vall d’Hebron Research Institute, CIBBIM-Nanomedicine, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
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49
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Martín V, Perales C, Fernández-Algar M, Dos Santos HG, Garrido P, Pernas M, Parro V, Moreno M, García-Pérez J, Alcamí J, Torán JL, Abia D, Domingo E, Briones C. An Efficient Microarray-Based Genotyping Platform for the Identification of Drug-Resistance Mutations in Majority and Minority Subpopulations of HIV-1 Quasispecies. PLoS One 2016; 11:e0166902. [PMID: 27959928 PMCID: PMC5154500 DOI: 10.1371/journal.pone.0166902] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 11/04/2016] [Indexed: 02/07/2023] Open
Abstract
The response of human immunodeficiency virus type 1 (HIV-1) quasispecies to antiretroviral therapy is influenced by the ensemble of mutants that composes the evolving population. Low-abundance subpopulations within HIV-1 quasispecies may determine the viral response to the administered drug combinations. However, routine sequencing assays available to clinical laboratories do not recognize HIV-1 minority variants representing less than 25% of the population. Although several alternative and more sensitive genotyping techniques have been developed, including next-generation sequencing (NGS) methods, they are usually very time consuming, expensive and require highly trained personnel, thus becoming unrealistic approaches in daily clinical practice. Here we describe the development and testing of a HIV-1 genotyping DNA microarray that detects and quantifies, in majority and minority viral subpopulations, relevant mutations and amino acid insertions in 42 codons of the pol gene associated with drug- and multidrug-resistance to protease (PR) and reverse transcriptase (RT) inhibitors. A customized bioinformatics protocol has been implemented to analyze the microarray hybridization data by including a new normalization procedure and a stepwise filtering algorithm, which resulted in the highly accurate (96.33%) detection of positive/negative signals. This microarray has been tested with 57 subtype B HIV-1 clinical samples extracted from multi-treated patients, showing an overall identification of 95.53% and 89.24% of the queried PR and RT codons, respectively, and enough sensitivity to detect minority subpopulations representing as low as 5–10% of the total quasispecies. The developed genotyping platform represents an efficient diagnostic and prognostic tool useful to personalize antiviral treatments in clinical practice.
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Affiliation(s)
- Verónica Martín
- Centro de Biología Molecular ‘Severo Ochoa’ (CBMSO, CSIC-UAM). Campus de Cantoblanco, Madrid, Spain
| | - Celia Perales
- Centro de Biología Molecular ‘Severo Ochoa’ (CBMSO, CSIC-UAM). Campus de Cantoblanco, Madrid, Spain
- Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas (CIBERehd), Spain
- Liver Unit, Internal Medicine, Laboratory of Malalties Hepàtiques, Vall d’Hebron Institut de Recerca-Hospital Universitari Vall d´Hebron (VHIR-HUVH), Universitat Autònoma de Barcelona. Barcelona, Spain
| | - María Fernández-Algar
- Department of Molecular Evolution, Centro de Astrobiología (CAB, CSIC-INTA). Torrejón de Ardoz, Madrid, Spain
| | - Helena G. Dos Santos
- Centro de Biología Molecular ‘Severo Ochoa’ (CBMSO, CSIC-UAM). Campus de Cantoblanco, Madrid, Spain
| | - Patricia Garrido
- Biotherapix, SLU. Parque Tecnológico de Madrid, Tres Cantos, Madrid. Spain
| | - María Pernas
- Biotherapix, SLU. Parque Tecnológico de Madrid, Tres Cantos, Madrid. Spain
| | - Víctor Parro
- Department of Molecular Evolution, Centro de Astrobiología (CAB, CSIC-INTA). Torrejón de Ardoz, Madrid, Spain
| | - Miguel Moreno
- Department of Molecular Evolution, Centro de Astrobiología (CAB, CSIC-INTA). Torrejón de Ardoz, Madrid, Spain
| | - Javier García-Pérez
- AIDS Immunopathogenesis Unit, Instituto de Salud Carlos III. Majadahonda, Madrid, Spain
| | - José Alcamí
- AIDS Immunopathogenesis Unit, Instituto de Salud Carlos III. Majadahonda, Madrid, Spain
| | - José Luis Torán
- Biotherapix, SLU. Parque Tecnológico de Madrid, Tres Cantos, Madrid. Spain
| | - David Abia
- Centro de Biología Molecular ‘Severo Ochoa’ (CBMSO, CSIC-UAM). Campus de Cantoblanco, Madrid, Spain
| | - Esteban Domingo
- Centro de Biología Molecular ‘Severo Ochoa’ (CBMSO, CSIC-UAM). Campus de Cantoblanco, Madrid, Spain
- Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas (CIBERehd), Spain
| | - Carlos Briones
- Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas (CIBERehd), Spain
- Department of Molecular Evolution, Centro de Astrobiología (CAB, CSIC-INTA). Torrejón de Ardoz, Madrid, Spain
- * E-mail:
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50
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Dieudonné PE, Tortosa T, Torcida Fernández-Baldor F, Canudo JI, Díaz-Martínez I. An Unexpected Early Rhabdodontid from Europe (Lower Cretaceous of Salas de los Infantes, Burgos Province, Spain) and a Re-Examination of Basal Iguanodontian Relationships. PLoS One 2016; 11:e0156251. [PMID: 27333279 PMCID: PMC4917257 DOI: 10.1371/journal.pone.0156251] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 05/11/2016] [Indexed: 11/30/2022] Open
Abstract
Disarticulated and incomplete remains from a new diminutive ornithopod are described. They come from the Cameros Basin in the north of Spain and were collected from the red clays of the Castrillo de la Reina Formation, ranging from Upper Barremian to Lower Aptian. The new ornithopod described here is slender and one of the smallest ever reported. An up-to-date phylogenetic analysis recovers this taxon as a basal iguanodontian. Its unique combination of characters makes it more derived than slender ornithopods like Hyphilophodon and Gasparinisaura, and bring very interesting insights into the basal iguanodontian phylogeny. Though possessing a minimum of three premaxillary teeth, this taxon also bears an extensor ilio-tibialis groove on the distal part of its femur. Moreover, its dentary and maxillary teeth are unique, remarkably similar to those regarded as having a “rhabdomorphan” affinity. This unknown taxon is suggested to be a stem taxon within Rhabdodontidae, a successful clade of basal iguanodonts from the Late Cretaceous of Europe. The Gondwanan ornithopods share the strongest affinities with this family, and we confirm Muttaburrasaurus as a sister taxon of the Rhabdodontidae within a newly defined clade, the Rhabdodontomorpha.
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Affiliation(s)
- Paul-Emile Dieudonné
- Grupo Aragosaurus−IUCA, Área de Paleontología, Facultad de Ciencias, Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
- * E-mail:
| | - Thierry Tortosa
- Réserve Naturelle Nationale Sainte-Victoire, Conseil Départemental des Bouches-du-Rhône, 52 avenue de Saint-Just, 13256 Marseille Cedex 20, France
| | - Fidel Torcida Fernández-Baldor
- Museo de Dinosaurios de Salas de los Infantes and Colectivo Arqueológico−Paleontológico Salense (CAS), Plaza Jesús Aparicio 9, 09600 Salas de los Infantes, Burgos, Spain
| | - José Ignacio Canudo
- Grupo Aragosaurus−IUCA, Área de Paleontología, Facultad de Ciencias, Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Ignacio Díaz-Martínez
- CONICET—Instituto de Investigación en Paleobiología y Geología, Universidad Nacional de Río Negro, General Roca 1242, 8332 Fisque Menuco (General Roca), Río Negro, Argentina
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