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Ortigosa-Palomo A, Fuentes-Ríos D, Quiñonero F, Melguizo C, Ortiz R, López-Romero JM, Prados J. Evaluation of cytotoxic effect of siphonochilone from African ginger: an in vitro analysis. Environ Toxicol 2024. [PMID: 38742918 DOI: 10.1002/tox.24308] [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: 09/11/2023] [Revised: 03/05/2024] [Accepted: 04/23/2024] [Indexed: 05/16/2024]
Abstract
Plants provide a wide array of compounds that can be explored for potential anticancer properties. Siphonochilone, a furanoterpene that represents one of the main components of the African plant Siphonochilus aethiopicus, shows numerous health benefits. However, to date, its antiproliferative properties have not been tested. The aim of this study was to analyze the cytotoxic effects of siphonochilone on a panel of cancer cell lines and its underlying mechanism of action. Our results demonstrated that siphonochilone exhibited significant cytotoxic effects on pancreatic, breast, lung, colon, and liver cancer cell lines showing a IC50 ranging from 22 to 124 μM at 72 h of treatment and highlighting its cytotoxic effect against MCF7 and PANC1 breast and pancreas cancer cell lines (22.03 and 39.03 μM, respectively). Cell death in these tumor lines was mediated by apoptosis by the mitochondrial pathway, as evidenced by siphonochilone-induced depolarization of the mitochondrial membrane potential. In addition, siphonochilone treatment involves the generation of reactive oxygen species that may contribute to apoptosis induction. In this work, we described for the first time the cytotoxic properties of siphonochilone and provided data about the molecular processes of cell death. Although future studies will be necessary, our results support the interest in this molecule in relation to their clinical application in cancer, and especially in breast and pancreatic cancer.
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Affiliation(s)
- Alba Ortigosa-Palomo
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. Granada, Granada, Spain
| | - David Fuentes-Ríos
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga, Málaga, Spain
| | - Francisco Quiñonero
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. Granada, Granada, Spain
| | - Consolación Melguizo
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. Granada, Granada, Spain
| | - Raul Ortiz
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. Granada, Granada, Spain
| | - Juan M López-Romero
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga, Málaga, Spain
| | - Jose Prados
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. Granada, Granada, Spain
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2
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Ortigosa-Palomo A, Porras-Alcalá C, Quiñonero F, Moya-Utrera F, Ortiz R, López-Romero JM, Melguizo C, Sarabia F, Prados J. Antitumor activity of bengamide ii in a panel of human and murine tumor cell lines: In vitro and in vivo determination of effectiveness against lung cancer. Biomed Pharmacother 2023; 168:115789. [PMID: 37924787 DOI: 10.1016/j.biopha.2023.115789] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/16/2023] [Accepted: 10/26/2023] [Indexed: 11/06/2023] Open
Abstract
Lung cancer is the most commonly diagnosed cancer and the one that causes the most deaths worldwide, so there is a need for therapies that improve survival rates. Products derived from marine organisms are a source of novel and potent antitumor compounds, but they present the great obstacle of their obtaining from the natural environment and the problems associated with the synthesis and biological effects of chemical analogues. In this work, a Bengamide analogue (Bengamide II) was chemically synthesized and in vitro and in vivo studies were performed to determine its antitumor activity and mechanisms of action. It was shown to have potent antiproliferative activity in lung cancer lines in 2D and 3D models. In addition, Bengamide II-treated cells showed G2/M and G0/G1 cell cycle arrest, together with a decrease in the proliferation marker Ki67. As for the mechanism of action, the treatment was associated with increased LC3-II expression and production of acidic vesicles signaling autophagy. In addition, Bengamide II treatment was associated with caspase-3 activation and DNA fragmentation related to apoptosis. Furthermore, a reduction of VEGFA expression, related to angiogenesis, was also observed. In vivo studies showed that Bengamide II markedly reduced tumor volume and metastases increasing survival. Additionally, it revealed no systemic toxicity in in vivo models at the therapeutic doses used, which is essential for its future clinical use. Taken together, the chemically synthesized bengamide analogue Bengamide II, is a promising drug for lung cancer treatment showing relevant antitumor activity and significant safety.
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Affiliation(s)
- Alba Ortigosa-Palomo
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain; Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain; Instituto de Investigación Biosanitaria ibs.GRANADA, 18012 Granada, Spain
| | - Cristina Porras-Alcalá
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga, 29071 Málaga, Spain
| | - Francisco Quiñonero
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain; Instituto de Investigación Biosanitaria ibs.GRANADA, 18012 Granada, Spain
| | - Federico Moya-Utrera
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga, 29071 Málaga, Spain
| | - Raúl Ortiz
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain; Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain; Instituto de Investigación Biosanitaria ibs.GRANADA, 18012 Granada, Spain.
| | - Juan M López-Romero
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga, 29071 Málaga, Spain
| | - Consolación Melguizo
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain; Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain; Instituto de Investigación Biosanitaria ibs.GRANADA, 18012 Granada, Spain
| | - Francisco Sarabia
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga, 29071 Málaga, Spain
| | - Jose Prados
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain; Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain; Instituto de Investigación Biosanitaria ibs.GRANADA, 18012 Granada, Spain
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3
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López-Vázquez A, Maldonado MA, Gomez E, Corzo NV, de Carlos-López E, Franco Villafañe JA, Jiménez-García K, Jiménez-Mier J, López-González JL, López-Monjaraz CJ, López-Romero JM, Medina Herrera A, Méndez-Fragoso R, Ortiz CA, Peña H, Raboño Borbolla JG, Ramírez-Martínez F, Valenzuela VM. Compact laser modulation system for a transportable atomic gravimeter. Opt Express 2023; 31:3504-3519. [PMID: 36785342 DOI: 10.1364/oe.477648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 12/16/2022] [Indexed: 06/18/2023]
Abstract
Nowadays, atom-based quantum sensors are leaving the laboratory towards field applications requiring compact and robust laser systems. Here we describe the realization of a compact laser system for atomic gravimetry. Starting with a single diode laser operating at 780 nm and adding only one fiber electro-optical modulator, one acousto-optical modulator and one laser amplifier we produce laser beams at all the frequencies required for a Rb-87 atomic gravimeter. Furthermore, we demonstrate that an atomic fountain configuration can also be implemented with our laser system. The modulated system reported here represents a substantial advance in the simplification of the laser source for transportable atom-based quantum sensors that can be adapted to other sensors such as atomic clocks, accelerometers, gyroscopes or magnetometers with minor modifications.
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4
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Cheng-Sánchez I, Moya-Utrera F, Porras-Alcalá C, López-Romero JM, Sarabia F. Antibody-Drug Conjugates Containing Payloads from Marine Origin. Mar Drugs 2022; 20:md20080494. [PMID: 36005497 PMCID: PMC9410405 DOI: 10.3390/md20080494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 07/27/2022] [Accepted: 07/28/2022] [Indexed: 12/10/2022] Open
Abstract
Antibody-drug conjugates (ADCs) are an important class of therapeutics for the treatment of cancer. Structurally, an ADC comprises an antibody, which serves as the delivery system, a payload drug that is a potent cytotoxin that kills cancer cells, and a chemical linker that connects the payload with the antibody. Unlike conventional chemotherapy methods, an ADC couples the selective targeting and pharmacokinetic characteristics related to the antibody with the potent cytotoxicity of the payload. This results in high specificity and potency by reducing off-target toxicities in patients by limiting the exposure of healthy tissues to the cytotoxic drug. As a consequence of these outstanding features, significant research efforts have been devoted to the design, synthesis, and development of ADCs, and several ADCs have been approved for clinical use. The ADC field not only relies upon biology and biochemistry (antibody) but also upon organic chemistry (linker and payload). In the latter, total synthesis of natural and designed cytotoxic compounds, together with the development of novel synthetic strategies, have been key aspects of the consecution of clinical ADCs. In the case of payloads from marine origin, impressive structural architectures and biological properties are observed, thus making them prime targets for chemical synthesis and the development of ADCs. In this review, we explore the molecular and biological diversity of ADCs, with particular emphasis on those containing marine cytotoxic drugs as the payload.
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Affiliation(s)
- Iván Cheng-Sánchez
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
- Correspondence:
| | - Federico Moya-Utrera
- Department of Organic Chemistry, Faculty of Sciences, University of Málaga, 29071 Málaga, Spain; (F.M.-U.); (C.P.-A.); (J.M.L.-R.); (F.S.)
| | - Cristina Porras-Alcalá
- Department of Organic Chemistry, Faculty of Sciences, University of Málaga, 29071 Málaga, Spain; (F.M.-U.); (C.P.-A.); (J.M.L.-R.); (F.S.)
| | - Juan M. López-Romero
- Department of Organic Chemistry, Faculty of Sciences, University of Málaga, 29071 Málaga, Spain; (F.M.-U.); (C.P.-A.); (J.M.L.-R.); (F.S.)
| | - Francisco Sarabia
- Department of Organic Chemistry, Faculty of Sciences, University of Málaga, 29071 Málaga, Spain; (F.M.-U.); (C.P.-A.); (J.M.L.-R.); (F.S.)
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5
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Medina-Herrera A, Ortiz CA, de Carlos-López E, López-Romero JM. Accurate temperature measurement of cold atoms in cesium fountain clocks. Opt Express 2022; 30:24261-24275. [PMID: 36236984 DOI: 10.1364/oe.461360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 06/07/2022] [Indexed: 06/16/2023]
Abstract
We introduce a new approach to determine if a cloud of cold atoms has or not a unique, well-defined temperature. In the first case, the temperature can be determined using the width of the velocity distribution. However, the temperature in a cloud of cold atoms may not be well-defined if the velocity distribution does not turn out to be Gaussian. In this case, the width of the velocity distribution cannot be associated to a unique temperature, and additional considerations exposed here should be followed to measure the temperatures of two groups of atoms forming the whole cloud. Also an uncertainty evaluation is presented.
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6
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Moncho-Jordá A, Jódar-Reyes AB, Kanduč M, Germán-Bellod A, López-Romero JM, Contreras-Cáceres R, Sarabia F, García-Castro M, Pérez-Ramírez HA, Odriozola G. Scaling Laws in the Diffusive Release of Neutral Cargo from Hollow Hydrogel Nanoparticles: Paclitaxel-Loaded Poly(4-vinylpyridine). ACS Nano 2020; 14:15227-15240. [PMID: 33174725 DOI: 10.1021/acsnano.0c05480] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We study the nonequilibrium diffusive release of electroneutral molecular cargo encapsulated inside hollow hydrogel nanoparticles. We propose a theoretical model that includes osmotic, steric, and short-range polymer-cargo attractions to determine the effective cargo-hydrogel interaction, ueff*, and the effective diffusion coefficient of the cargo inside the polymer network, Deff*. Using dynamical density functional theory (DDFT), we investigate the scaling of the characteristic release time, τ1/2, with the key parameters involved in the process, namely, ueff*, Deff*, and the swelling ratio. This effort represents a full study of the problem, covering a broad range of cargo sizes and providing predictions for repulsive and attractive polymer shells. Our calculations show that the release time through repulsive polymer networks scales with q2eβueff*/Deff* for βueff* ≫ 1. In this case, the cargo molecules are excluded from the shell of the hydrogel. For attractive shells, the polymer retains the cargo molecules on its internal surface and its interior, and the release time grows exponentially with the attraction strength. The DDFT calculations are compared to an analytical model for the mean first passage time, which provides an excellent quantitative description of the kinetics for both repulsive and attractive shells without fitting parameters. Finally, we apply the method to reproduce experimental results on the release of paclitaxel from hollow poly(4-vinylpyridine) nanoparticles and find that the slow release of the drug can be explained in terms of the strong binding attraction between the drug and the polymer.
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Affiliation(s)
- Arturo Moncho-Jordá
- Departamento de Física Aplicada, Universidad de Granada, Campus Fuentenueva S/N, 18071 Granada, Spain
- Instituto Carlos I de Física Teórica y Computacional, Facultad de Ciencias, Universidad de Granada, Campus Fuentenueva S/N, 18071 Granada, Spain
| | - Ana B Jódar-Reyes
- Departamento de Física Aplicada, Universidad de Granada, Campus Fuentenueva S/N, 18071 Granada, Spain
- Excellence Research Unit "Modeling Nature" (MNat), Universidad de Granada, Campus Fuentenueva S/N, 18071 Granada, Spain
| | - Matej Kanduč
- Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Alicia Germán-Bellod
- Departamento de Física Aplicada, Universidad de Granada, Campus Fuentenueva S/N, 18071 Granada, Spain
| | - Juan M López-Romero
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain
| | - Rafael Contreras-Cáceres
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal, 28040 Madrid, Spain
| | - Francisco Sarabia
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain
| | - Miguel García-Castro
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain
| | - Héctor A Pérez-Ramírez
- Física de Procesos Irreversibles, Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana-Azcapotzalco, Avenida San Pablo 180, 02200 Ciudad de México, Mexico
| | - Gerardo Odriozola
- Física de Procesos Irreversibles, Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana-Azcapotzalco, Avenida San Pablo 180, 02200 Ciudad de México, Mexico
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7
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Garcia-Pinel B, Ortega-Rodríguez A, Porras-Alcalá C, Cabeza L, Contreras-Cáceres R, Ortiz R, Díaz A, Moscoso A, Sarabia F, Prados J, López-Romero JM, Melguizo C. Magnetically active pNIPAM nanosystems as temperature-sensitive biocompatible structures for controlled drug delivery. Artif Cells Nanomed Biotechnol 2020; 48:1022-1035. [PMID: 32663040 DOI: 10.1080/21691401.2020.1773488] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Here, temperature-sensitive hybrid poly(N-isopropylacrylamide) (pNIPAM) nanosystems with magnetic response are synthesised and investigated for controlled release of 5-fluorouracil (5FU) and oxaliplatin (OXA). Initially, magnetic nanoparticles (@Fe3O4) are synthesised by co-precipitation approach and functionalised with acrylic acid (AA), 3-butenoic acid (3BA) or allylamine (AL) as comonomers. The thermo-responsive polymer is grown by free radical polymerisation using N-isopropylacrylamide (NIPAM) as monomer, N,N'-methylenbisacrylamide (BIS) as cross-linker, and 2,2'-azobis(2-methylpropionamidene) (V50) as initiator. We evaluate particle morphology by transmission electron microscopy (TEM) and particle size and surface charge by dynamic light scattering (DLS) and Z-potential (ZP) measurements. These magnetically active pNIPAM@ nanoformulations are loaded with 5-fluorouracil (5FU) and oxaliplatin (OXA) to determine loading efficiency, drug content and release as well as the cytotoxicity against T-84 colon cancer cells. Our results show high biocompatibility of pNIPAM nanoformulations using human blood cells and cultured cells. Interestingly, the pNIPAM@Fe3O4-3BA + 5FU nanoformulation significantly reduces the growth of T-84 cells (57% relative inhibition of proliferation). Indeed, pNIPAM-co-AL@Fe3O4-AA nanosystems produce a slight migration of HCT15 cells in suspension in the presence of an external magnetic field. Therefore, the obtained hybrid nanoparticles can be applied as a promising biocompatible nanoplatform for the delivery of 5FU and OXA in the improvement of colon cancer treatments.
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Affiliation(s)
- Beatriz Garcia-Pinel
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, Granada, Spain.,Department of Anatomy and Embriology, Faculty of Medicine, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain
| | | | - Cristina Porras-Alcalá
- Department of Organic Chemistry, Faculty of Sciences, University of Málaga, Málaga, Spain
| | - Laura Cabeza
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, Granada, Spain.,Department of Anatomy and Embriology, Faculty of Medicine, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain
| | - Rafael Contreras-Cáceres
- Department of Chemistry in Pharmaceutical Science, Faculty of Pharmacy, Complutense University of Madrid, Madrid, Spain
| | - Raul Ortiz
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, Granada, Spain.,Department of Anatomy and Embriology, Faculty of Medicine, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain
| | - Amelia Díaz
- Department of Organic Chemistry, Faculty of Sciences, University of Málaga, Málaga, Spain
| | - Ana Moscoso
- Department of Organic Chemistry, Faculty of Sciences, University of Málaga, Málaga, Spain
| | - Francisco Sarabia
- Department of Organic Chemistry, Faculty of Sciences, University of Málaga, Málaga, Spain
| | - José Prados
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, Granada, Spain.,Department of Anatomy and Embriology, Faculty of Medicine, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain
| | - Juan M López-Romero
- Department of Organic Chemistry, Faculty of Sciences, University of Málaga, Málaga, Spain
| | - Consolación Melguizo
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, Granada, Spain.,Department of Anatomy and Embriology, Faculty of Medicine, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain
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8
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Cheng-Sánchez I, Carrillo P, Sánchez-Ruiz A, Martínez-Poveda B, Quesada AR, Medina MA, López-Romero JM, Sarabia F. Exploring the Ring-Closing Metathesis for the Construction of the Solomonamide Macrocyclic Core: Identification of Bioactive Precursors. J Org Chem 2018; 83:5365-5383. [DOI: 10.1021/acs.joc.7b02988] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Iván Cheng-Sánchez
- Department of Organic Chemistry; Faculty of Sciences, University of Malaga, Campus de Teatinos s/n, 29071, Malaga, Spain
| | - Paloma Carrillo
- Department of Biochemistry and Molecular Biology, Faculty of Sciences, University of Malaga, Campus de Teatinos s/n, 29071, Malaga, Spain
| | - Antonio Sánchez-Ruiz
- Organic Chemistry Section, Faculty of Pharmacy, University of Castilla-La Mancha, Avda Dr. José María Sánchez Ibáñez s/n, 02008, Albacete, Spain
| | - Beatriz Martínez-Poveda
- Department of Biochemistry and Molecular Biology, Faculty of Sciences, University of Malaga, Campus de Teatinos s/n, 29071, Malaga, Spain
| | - Ana R. Quesada
- Department of Biochemistry and Molecular Biology, Faculty of Sciences, University of Malaga, Campus de Teatinos s/n, 29071, Malaga, Spain
| | - Miguel A. Medina
- Department of Biochemistry and Molecular Biology, Faculty of Sciences, University of Malaga, Campus de Teatinos s/n, 29071, Malaga, Spain
| | - Juan M. López-Romero
- Department of Organic Chemistry; Faculty of Sciences, University of Malaga, Campus de Teatinos s/n, 29071, Malaga, Spain
| | - Francisco Sarabia
- Department of Organic Chemistry; Faculty of Sciences, University of Malaga, Campus de Teatinos s/n, 29071, Malaga, Spain
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9
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Jerez S, López-Romero JM, Turco M, Jiménez-Guerrero P, Vautard R, Montávez JP. Impact of evolving greenhouse gas forcing on the warming signal in regional climate model experiments. Nat Commun 2018; 9:1304. [PMID: 29610459 PMCID: PMC5880811 DOI: 10.1038/s41467-018-03527-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 02/21/2018] [Indexed: 11/26/2022] Open
Abstract
Variations in the atmospheric concentrations of greenhouse gases (GHG) may not be included as external forcing when running regional climate models (RCMs); at least, this is a non-regulated, non-documented practice. Here we investigate the so far unexplored impact of considering the rising evolution of the CO2, CH4, and N2O atmospheric concentrations on near-surface air temperature (TAS) trends, for both the recent past and the near future, as simulated by a state-of-the-art RCM over Europe. The results show that the TAS trends are significantly affected by 1–2 K century−1, which under 1.5 °C global warming translates into a non-negligible impact of up to 1 K in the regional projections of TAS, similarly affecting projections for maximum and minimum temperatures. In some cases, these differences involve a doubling signal, laying further claim to careful reconsideration of the RCM setups with regard to the inclusion of GHG concentrations as an evolving external forcing which, for the sake of research reproducibility and reliability, should be clearly documented in the literature. The inclusion of greenhouse gas forcing in regional climate model experiments is a non-regulated, non-documented practice. Here, the authors demonstrate the significant of the impact of this lack of regulation on simulated regional warming trends, which can double climate change signals under 1.5 °C global warming.
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Affiliation(s)
- S Jerez
- Regional Atmospheric Modeling Group, Department of Physics, University of Murcia, 30100, Murcia, Spain. .,Laboratório Associado IDL, Faculdade de Ciencias, Universidade de Lisboa, 1749-016, Lisboa, Portugal.
| | - J M López-Romero
- Regional Atmospheric Modeling Group, Department of Physics, University of Murcia, 30100, Murcia, Spain
| | - M Turco
- Department of Applied Physics, University of Barcelona, 08028, Barcelona, Spain
| | - P Jiménez-Guerrero
- Regional Atmospheric Modeling Group, Department of Physics, University of Murcia, 30100, Murcia, Spain
| | - R Vautard
- Laboratoire des Sciences du Climat et de l'Environnement (LSCE), IPSL, CEA-CNRS-UVSQ, 91191, Gif sur Yvette, France
| | - J P Montávez
- Regional Atmospheric Modeling Group, Department of Physics, University of Murcia, 30100, Murcia, Spain
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10
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Benavente J, García ME, Urbano N, López-Romero JM, Contreras-Cáceres RC, Casado-Rodríguez MA, Moscoso A, Hierrezuelo J. Inclusion of silver nanoparticles for improving regenerated cellulose membrane performance and reduction of biofouling. Int J Biol Macromol 2017; 103:758-763. [PMID: 28545964 DOI: 10.1016/j.ijbiomac.2017.05.133] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 05/05/2017] [Accepted: 05/22/2017] [Indexed: 12/21/2022]
Abstract
The preparation of silver nanoparticles (AgNPs) and their incorporation into the structure of a regenerated cellulose membrane by dip coating is presented. Morphological characterization of the AgNPs (average diameter of 20±2nm) was carried out by SEM/TEM, while elastic, electrical and antimicrobial properties of the hybrid membrane were also analyzed. The presence of silver nanoparticles in the membrane seems to increases its rigidity and its chemical stability against oxidation, but it only induces small changes in the transport parameters. As expected, AgNPs provide antimicrobial properties to the membrane and consequently the reduction of biofouling without affecting significantly other characteristic parameters, opening the application of the modified membrane to wastewaters treatment.
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Affiliation(s)
- J Benavente
- Dep Física Aplicada, Facultad de Ciencias, Universidad de Málaga, Málaga, 29071, Spain
| | - M E García
- Dep Física Aplicada, Facultad de Ciencias, Universidad de Málaga, Málaga, 29071, Spain
| | - N Urbano
- Dep Química Orgánica, Facultad de Ciencias, Universidad de Málaga, Málaga, 29071, Spain
| | - J M López-Romero
- Dep Química Orgánica, Facultad de Ciencias, Universidad de Málaga, Málaga, 29071, Spain.
| | - R C Contreras-Cáceres
- Dep Química Orgánica, Facultad de Ciencias, Universidad de Málaga, Málaga, 29071, Spain
| | - M A Casado-Rodríguez
- Dep Química Orgánica, Facultad de Ciencias, Universidad de Málaga, Málaga, 29071, Spain
| | - A Moscoso
- Dep Química Orgánica, Facultad de Ciencias, Universidad de Málaga, Málaga, 29071, Spain
| | - J Hierrezuelo
- Dep Microbiología, Centro de Supercomputación y Bioinnovación, Universidad de Málaga, PTA C. Severo Ochoa 34, Málaga, 29590, Spain
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11
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Algarra M, Campos BB, Rodriguez-Borges JE, Sánchez FG, López-Romero JM, Esteves da Silva JCG. Niclosamide quantification in methyl-β-cyclodextrin after derivatization to aminoniclosamide. J INCL PHENOM MACRO 2011. [DOI: 10.1007/s10847-011-9945-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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López-Tocón I, Peláez D, Soto J, Rico R, Cai C, López-Romero JM, Otero JC. Raman Study of the Rigidity of Penta-p-phenylene Derivatives Used as Legs in Molecular Tripods. J Phys Chem B 2008; 112:5363-7. [DOI: 10.1021/jp8012893] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Isabel López-Tocón
- Departamento de Química Física and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain, and Department of Chemistry and Center for Materials Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Daniel Peláez
- Departamento de Química Física and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain, and Department of Chemistry and Center for Materials Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Juan Soto
- Departamento de Química Física and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain, and Department of Chemistry and Center for Materials Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Rodrigo Rico
- Departamento de Química Física and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain, and Department of Chemistry and Center for Materials Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Chengzhi Cai
- Departamento de Química Física and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain, and Department of Chemistry and Center for Materials Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Juan M. López-Romero
- Departamento de Química Física and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain, and Department of Chemistry and Center for Materials Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Juan C. Otero
- Departamento de Química Física and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain, and Department of Chemistry and Center for Materials Chemistry, University of Houston, Houston, Texas 77204-5003
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13
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Suau R, Cabezudo B, Rico R, Nájera F, López-Romero JM. Direct determination of alkaloid contents in Fumaria species by GC-MS. Phytochem Anal 2002; 13:363-367. [PMID: 12494757 DOI: 10.1002/pca.669] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The isoquinoline alkaloids protopine, cryptopine, sinactine, stylopine, bicuculline, adlumine, parfumine, fumariline, fumarophycine, fumaritine, dihydrofumariline, parfumidine and dihydrosanguinarine have been determined and identified by gas chromatography-mass spectrometry in Fumaria agraria, F. bastardii, F. capreolata, F. sepium, F. densiflora, F. faurei, F. officinalis subsp. officinalis, F. parviflora, F. petteri subsp. calcarata and F. macrosepala. The chemotaxonomic significance of the results is discussed.
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Affiliation(s)
- R Suau
- Departamento de Química Orgánica, Universidad de Málaga, E-29071 Málaga, Spain.
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14
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Cerezo S, Cortés J, Galvan D, López-Romero JM, Moreno-Mañas M, Pleixats R, Avilés FX, Canals F, Roglans A. Application of matrix-assisted laser desorption/ionization time-of-flight mass spectrometry to the structure determination of medium and large macrocycles formed by palladium(0)-catalyzed allylation of arenesulfonamides, sulfamide, and cyanamide. Rapid Commun Mass Spectrom 1999; 13:2359-2365. [PMID: 10567935 DOI: 10.1002/(sici)1097-0231(19991215)13:23<2359::aid-rcm799>3.0.co;2-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry allowed the direct determination of the extent of macrocyclic and linear oligomer formation in the palladium(0)-catalyzed allylation of highly acidic and non-nucleophilic arenesulfonamides, sulfamide, and cyanamide. Palladium-containing 15-membered-ring macrocyclic compounds gave unusual [M - H](+) ions besides [M + Na](+) and [M + K](+) adducts. Copyright 1999 John Wiley & Sons, Ltd.
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Affiliation(s)
- S Cerezo
- Department of Chemistry, Universitat Autònoma de Barcelona, Bellaterra, 08193-Barcelona, Spain
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