20 results on '"Cristóbal Lecina, Edgar"'
Search Results
2. Acid-Modulated Peptide Synthesis for Application on Oxide Biosensor Interfaces
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Cristóbal-Lecina, Edgar, primary, El-Maiss, Janwa, additional, Figueras, Eduard, additional, Singh, Aruna Chandra, additional, Krishnamoorthy, Sivashankar, additional, Østerbye, Thomas, additional, Pascual García, César, additional, and Andreu, David, additional
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- 2023
- Full Text
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3. Acid-Modulated Peptide Synthesis for Application on Oxide Biosensor Interfaces
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Cristóbal-Lecina, Edgar, El-Maiss, Janwa, Figueras, Eduard, Singh, Aruna Chandra, Krishnamoorthy, Sivashankar, Østerbye, Thomas, Pascual García, César, Andreu, David, Cristóbal-Lecina, Edgar, El-Maiss, Janwa, Figueras, Eduard, Singh, Aruna Chandra, Krishnamoorthy, Sivashankar, Østerbye, Thomas, Pascual García, César, and Andreu, David
- Abstract
In this paper we report an acid-modulated strategy for novel peptide microarray production on biosensor interfaces. We initially selected a controlled pore glass (CPG) as a support for solid-phase peptide synthesis (SPPS) to implement a chemistry that can be performed at the interface of multiple field effect transistor (FET) sensors, eventually to generate label-free peptide microarrays for protein screening. Our chemistry uses a temporary protection of the N-terminal amino function of each amino acid building block with a tert-butyloxycarbonyl (Boc) group that can be removed after each SPPS cycle, in combination with semi-permanent protection of the side chains of trifunctional amino acid residues. Such a protection scheme with a well-proven record of application in conventional, batchwise SPPS has been fine-tuned for optimal performance on CPG and, from there, translated to SPR chips that allow layer-by-layer monitoring of amino acid coupling. Our results validate this acid-modulated synthesis as a feasible approach for producing peptides in high yields and purity on flat glass surfaces, such as those in bio-FETs.
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- 2023
4. Molecular basis of the selective binding of MDMA enantiomers to the alpha4beta2 nicotinic receptor subtype: Synthesis, pharmacological evaluation and mechanistic studies
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Llabrés, Salomé, García-Ratés, Sara, Cristóbal-Lecina, Edgar, Riera, Antoni, Borrell, José Ignacio, Camarasa, Jorge, Pubill, David, Luque, F. Javier, and Escubedo, Elena
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- 2014
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5. Hierarchical Quatsome-RGD Nanoarchitectonic Surfaces for Enhanced Integrin-Mediated Cell Adhesion
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Martínez-Miguel, Marc, primary, Castellote-Borrell, Miquel, additional, Köber, Mariana, additional, Kyvik, Adriana R., additional, Tomsen-Melero, Judit, additional, Vargas-Nadal, Guillem, additional, Muñoz, Jose, additional, Pulido, Daniel, additional, Cristóbal-Lecina, Edgar, additional, Passemard, Solène, additional, Royo, Miriam, additional, Mas-Torrent, Marta, additional, Veciana, Jaume, additional, Giannotti, Marina I., additional, Guasch, Judith, additional, Ventosa, Nora, additional, and Ratera, Imma, additional
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- 2022
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6. Liposomes and its use for enzyme delivery
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Ventosa, Leonor, Veciana, Jaume, Royo, Miriam, Tomsen Melero, Judit, Abasolo, Ibane, Schwartz Jr., Simó, Corchero, José Luis, Pulido, Daniel, Cristóbal Lecina, Edgar, González Mira, Elisabet, Sala Vergés, Santiago, Córdoba, Alba, Merlo Mas, Josep, Soldevila, Andreu, Font, Albert, Ventosa, Leonor, Veciana, Jaume, Royo, Miriam, Tomsen Melero, Judit, Abasolo, Ibane, Schwartz Jr., Simó, Corchero, José Luis, Pulido, Daniel, Cristóbal Lecina, Edgar, González Mira, Elisabet, Sala Vergés, Santiago, Córdoba, Alba, Merlo Mas, Josep, Soldevila, Andreu, and Font, Albert
- Abstract
The present invention refers to a liposome comprising: a) a phospholipid; b) cholesterol (chol); c) a conjugate comprising a cholesterol moiety, a polyethylene glycol (PEG) moiety and a peptide moiety comprising a RGD sequence, wherein the PEG moiety is covalently attached to the cholesterol moiety by one end via a bond of the type alkyl ether and is covalently attached to the peptide moiety comprising the RGD sequence by the other end: d) a non-lipid cationic surfactant present in a percentage of less than 30% mol in respect to the total mol of the components of the liposome a), b), c) and d); and e) alpha-galactosidase (GLA) enzyme present in a ratio of micrograms of GLA in respect to the total milligrams of the components of the liposome a), b), c) and d) of between and including 2 to 35. It also refers to a pharmaceutical composition that comprises it and to the liposome or the pharmaceutical composition for use as a medicament, in particular for use in the treatment of Fabry disease. It also refers to a process for the production of the liposome.
- Published
- 2022
7. Hierarchical Quatsome-RGD Nanoarchitectonic Surfaces for Enhanced Integrin-Mediated Cell Adhesion
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Ministerio de Ciencia, Innovación y Universidades (España), Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red Bioingeniería, Biomateriales y Nanomedicina (España), Generalitat de Catalunya, Fundació La Marató de TV3, European Cooperation in Science and Technology, Max Planck Society, European Commission, Köber, Mariana [0000-0001-9962-7900], Kyvik Ruiz, Adriana [0000-0002-6385-7162], Tomsen Melero, Judit [0000-0002-2837-8107], Pulido, Daniel [0000-0002-2841-194X], Royo, Miriam [0000-0001-5292-0819], Mas Torrent, Marta [0000-0002-1586-005X], Veciana, Jaume [0000-0003-1023-9923], Giannotti, Marina I. [0000-0002-0815-742X], Guasch, Judith [0000-0002-3571-4711], Ventosa, Nora [0000-0002-8008-4974], Ratera, Imma [0000-0002-1464-9789], Martínez Miguel, Marc, Castellote Borrell, Miquel, Köber, Mariana, Kyvik Ruiz, Adriana, Tomsen Melero, Judit, Vargas Nadal, Guillem, Muñoz Martín, José M., Pulido, Daniel, Cristóbal Lecina, Edgar, Passemard, Solène, Royo, Miriam, Mas Torrent, Marta, Veciana, Jaume, Giannotti, Marina I., Guasch, Judith, Ventosa, Nora, Ratera, Imma, Ministerio de Ciencia, Innovación y Universidades (España), Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red Bioingeniería, Biomateriales y Nanomedicina (España), Generalitat de Catalunya, Fundació La Marató de TV3, European Cooperation in Science and Technology, Max Planck Society, European Commission, Köber, Mariana [0000-0001-9962-7900], Kyvik Ruiz, Adriana [0000-0002-6385-7162], Tomsen Melero, Judit [0000-0002-2837-8107], Pulido, Daniel [0000-0002-2841-194X], Royo, Miriam [0000-0001-5292-0819], Mas Torrent, Marta [0000-0002-1586-005X], Veciana, Jaume [0000-0003-1023-9923], Giannotti, Marina I. [0000-0002-0815-742X], Guasch, Judith [0000-0002-3571-4711], Ventosa, Nora [0000-0002-8008-4974], Ratera, Imma [0000-0002-1464-9789], Martínez Miguel, Marc, Castellote Borrell, Miquel, Köber, Mariana, Kyvik Ruiz, Adriana, Tomsen Melero, Judit, Vargas Nadal, Guillem, Muñoz Martín, José M., Pulido, Daniel, Cristóbal Lecina, Edgar, Passemard, Solène, Royo, Miriam, Mas Torrent, Marta, Veciana, Jaume, Giannotti, Marina I., Guasch, Judith, Ventosa, Nora, and Ratera, Imma
- Abstract
The synthesis and study of the tripeptide Arg-Gly-Asp (RGD), the binding site of different extracellular matrix proteins, e.g., fibronectin and vitronectin, has allowed the production of a wide range of cell adhesive surfaces. Although the surface density and spacing of the RGD peptide at the nanoscale have already shown a significant influence on cell adhesion, the impact of its hierarchical nanostructure is still rather unexplored. Accordingly, a versatile colloidal system named quatsomes, based on fluid nanovesicles formed by the self-assembling of cholesterol and surfactant molecules, has been devised as a novel template to achieve hierarchical nanostructures of the RGD peptide. To this end, RGD was anchored on the vesicle's fluid membrane of quatsomes, and the RGD-functionalized nanovesicles were covalently anchored to planar gold surfaces, forming a state of quasi-suspension, through a long poly(ethylene glycol) (PEG) chain with a thiol termination. An underlying self-assembled monolayer (SAM) of a shorter PEG was introduced for vesicle stabilization and to avoid unspecific cell adhesion. In comparison with substrates featuring a homogeneous distribution of RGD peptides, the resulting hierarchical nanoarchitectonic dramatically enhanced cell adhesion, despite lower overall RGD molecules on the surface. The new versatile platform was thoroughly characterized using a multitechnique approach, proving its enhanced performance. These findings open new methods for the hierarchical immobilization of biomolecules on surfaces using quatsomes as a robust and novel tissue engineering strategy.
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- 2022
8. Efficacy of targeted nanoliposomes in reducing globotriaosylceramide (Gb3) accumulation in mouse models of Fabry disease
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Moltó-Abad, Marc, primary, Riascos, Zamira-V Díaz, additional, Tomsen-Melero, Judit, additional, González-Mira, Elisabet, additional, Casas, Josefina, additional, Cristóbal-Lecina, Edgar, additional, Font, Albert, additional, Corchero, José Luis, additional, Pulido, Daniel, additional, Soldevila, Andreu, additional, Royo, Miriam, additional, Córdoba, Alba, additional, Merlo-Mas, Josep, additional, Ferrer, Lidia, additional, Sala, Santi, additional, Mancilla-Zamora, Sandra, additional, Llaguno-Munive, Monserrat, additional, Zamora-Pérez, Paula, additional, Garcia-Prats, Belén, additional, Ventosa, Nora, additional, and Abasolo, Ibane, additional
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- 2022
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9. Liposomes et leur utilisation pour l'administration d'enzymes
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Ventosa, Leonor, Veciana, Jaume, Royo, Miriam, Tomsen Melero, Judit, Abasolo, Ibane, Schwartz Jr., Simó, Corchero, José Luis, Pulido, Daniel, Cristóbal Lecina, Edgar, González Mira, Elisabet, Sala Vergés, Santiago, Córdoba, Alba, Merlo Mas, Josep, Soldevila, Andreu, and Font, Albert
- Abstract
[EN] The present invention refers to a liposome comprising: a) a phospholipid; b) cholesterol (chol); c) a conjugate comprising a cholesterol moiety, a polyethylene glycol (PEG) moiety and a peptide moiety comprising a RGD sequence, wherein the PEG moiety is covalently attached to the cholesterol moiety by one end via a bond of the type alkyl ether and is covalently attached to the peptide moiety comprising the RGD sequence by the other end: d) a non-lipid cationic surfactant present in a percentage of less than 30% mol in respect to the total mol of the components of the liposome a), b), c) and d); and e) alpha-galactosidase (GLA) enzyme present in a ratio of micrograms of GLA in respect to the total milligrams of the components of the liposome a), b), c) and d) of between and including 2 to 35. It also refers to a pharmaceutical composition that comprises it and to the liposome or the pharmaceutical composition for use as a medicament, in particular for use in the treatment of Fabry disease. It also refers to a process for the production of the liposome., [FR] La présente invention concerne un liposome comprenant : a) un phospholipide ; b) cholestérol (chol) ; c) un conjugué comprenant une fraction de cholestérol, une fraction de polyéthylène glycol (PEG) et une fraction peptidique comprenant une séquence RGD, la fraction PEG étant liée de manière covalente à la fraction de cholestérol par une extrémité par l'intermédiaire d'une liaison du type éther alcoylique et étant liée de manière covalente à la fraction peptidique comprenant la séquence RGD par l'autre extrémité : d) un agent tensioactif cationique non lipidique présent dans un pourcentage inférieur à 30% molaire par rapport au total molaire des composants du liposome a), b), c) et d) ; et e) l'enzyme alpha-galactosidase (GLA) présente dans un rapport de microgrammes de GLA par rapport aux milligrammes totaux des composants du liposome a), b), c) et d) de 2 à 35 inclus. L'invention concerne également une composition pharmaceutique qui le comprend et le liposome ou la composition pharmaceutique pour une utilisation comme médicament, en particulier pour une utilisation dans le traitement de la maladie de Fabry. L'invention concerne également un procédé de production du liposome., Consejo Superior de Investigaciones Científicas (CSIC), Consorcio Centro de Investigación Biomédica En Red, Fundació Hospital Universitari Vall D'Hebron - Institut de Recerca, Nanomol Technologies, S.L., Leanbio, A1 Solicitud de patente con informe sobre el estado de la técnica
- Published
- 2021
10. Impact of Chemical Composition on the Nanostructure and Biological Activity of α-Galactosidase-Loaded Nanovesicles for Fabry Disease Treatment
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Tomsen-Melero, Judit, primary, Passemard, Solène, additional, García-Aranda, Natalia, additional, Díaz-Riascos, Zamira Vanessa, additional, González-Rioja, Ramon, additional, Nedergaard Pedersen, Jannik, additional, Lyngsø, Jeppe, additional, Merlo-Mas, Josep, additional, Cristóbal-Lecina, Edgar, additional, Corchero, José Luis, additional, Pulido, Daniel, additional, Cámara-Sánchez, Patricia, additional, Portnaya, Irina, additional, Ionita, Inbal, additional, Schwartz, Simó, additional, Veciana, Jaume, additional, Sala, Santi, additional, Royo, Miriam, additional, Córdoba, Alba, additional, Danino, Dganit, additional, Pedersen, Jan Skov, additional, González-Mira, Elisabet, additional, Abasolo, Ibane, additional, and Ventosa, Nora, additional
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- 2021
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11. Scale-up and Quality by Design application to the robust production of an enzyme-loaded liposomal formulation by DELOS-susp method
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Merlo, Josep, primary, Tomsen-Melero, Judit, additional, Corchero, José-Luis, additional, González-Mira, Elisabet, additional, Font, Albert, additional, Pedersen, Jannik N., additional, García-Aranda, Natalia, additional, Cristóbal-Lecina, Edgar, additional, Royo, Míriam, additional, Abasolo, Ibane, additional, Pedersen, Jan S., additional, Danino, Dganit, additional, Soldevila, Andreu, additional, Sala, Santi, additional, Ventosa, Nora, additional, and Córdoba, Alba, additional
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- 2020
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12. Synthesis of Stable Cholesteryl–Polyethylene Glycol–Peptide Conjugates with Non-Disperse Polyethylene Glycol Lengths
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European Commission, Cristóbal-Lecina, Edgar, Pulido, Daniel, Martin-Malpartida, Pau, Macías, María J., Albericio, Fernando, Royo, Miriam, European Commission, Cristóbal-Lecina, Edgar, Pulido, Daniel, Martin-Malpartida, Pau, Macías, María J., Albericio, Fernando, and Royo, Miriam
- Abstract
A method for conjugating cholesterol to peptide ligands through non-disperse polyethylene glycol (ND-PEG) through a non-hydrolysable linkage is described. The iterative addition of tetraethylene glycol macrocyclic sulfate to cholesterol (Chol) renders a family of highly pure well-defined Chol-PEG compounds with different PEG lengths from 4 up to 20 ethylene oxide units, stably linked through an ether bond. The conjugation of these Chol-PEG compounds to the cyclic (RGDfK) peptide though Lys5 side chains generates different lengths of Chol-PEG-RGD conjugates that retain the oligomer purity of the precursors, as analysis by HRMS and NMR has shown. Other derivatives were synthesized with similar results, such as Chol-PEG-OCH3 and Chol-PEG conjugated to glutathione and Tf1 peptides through maleimide–thiol chemoselective ligation. This method allows the systematic synthesis of highly pure uniform stable Chol-PEGs, circumventing the use of activation groups on each elongation step and thus reducing the number of synthesis steps.
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- 2020
13. Synthesis of Stable Cholesteryl–Polyethylene Glycol–Peptide Conjugates with Non-Disperse Polyethylene Glycol Lengths
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Cristóbal-Lecina, Edgar, primary, Pulido, Daniel, additional, Martin-Malpartida, Pau, additional, Macias, Maria J., additional, Albericio, Fernando, additional, and Royo, Miriam, additional
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- 2020
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14. Targeted nanoliposomes for the treatment of Fabry disease
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Abasolo, Ibane, primary, Lechado, Anna, additional, García-Aranda, Natalia, additional, Bueno, Dolores, additional, Ortega, David, additional, González-Mira, Elisabeth, additional, Passemard, Solène, additional, Díaz-Riascos, Zamira Vanessa, additional, Mendoza, Rosa, additional, Corchero, José Luis, additional, Moltó-Abad, Marc, additional, Cristóbal-Lecina, Edgar, additional, Pulido, Daniel, additional, Casas, Josefina, additional, Royo, Miriam, additional, Pintos-Morell, Guillem, additional, Veciana, Jaume, additional, Ventosa, Nora, additional, and Schwartz, Simó, additional
- Published
- 2019
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15. Catálisis Asimétrica con complejos de rodio e iridio. Aplicación en síntesis de compuestos biológicamente activos
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Cristóbal Lecina, Edgar, Riera i Escalé, Antoni, Verdaguer i Espaulella, Xavier, and Universitat de Barcelona. Departament de Química Orgànica
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Catàlisi asimètrica ,Síntesi orgànica ,Catálisis asimétrica ,Síntesis orgánica ,Organic synthesis ,Enantioselective catalysis ,Hydrogenation ,Hidrogenació ,Hidrogenación ,Ciències Experimentals i Matemàtiques - Abstract
La hidrogenación catalítica asimétrica es uno de los métodos más importantes en síntesis orgánica. Este proceso permite acceder a importantes productos quirales a escala multigramo utilizando hidrógeno (que es barato) y pequeñas cantidades de catalizador. Dichas hidrogenaciones requieren el empleo de complejos metálicos que contienen ligandos quirales y se presentan como un método muy atractivo desde el punto de vista de la economía atómica. Hasta el momento, se han descrito una amplia variedad de ligandos quirales empleados en la hidrogenación enantioselectiva. En nuestro grupo de investigación, existe una larga trayectoria de trabajo en este campo y recientemente se han diseñado y sintetizado ligandos con quiralidad en el átomo de fósforo, siendo la aminodifosfina MaxPHOS uno de los ejemplos. El complejo Rh-MaxPHOS ha ofrecido excelentes excesos enantioméricos en la hidrogenación asimétrica de a y ß dehidro aminoácidos. Estos buenos resultados abrían la puerta a una exploración más detallada sobre la capacidad de hidrogenación de este complejo ante diversos tipos de sustratos. Así, el primer objetivo de la presente tesis doctoral consistió en ampliar el alcance de este catalizador en una galería de N-acil-enamidas (ß-cetoenamidas. enamidas cíclicas tri-sustituidas y a-heteroarilenamidas) que posteriormente dieran lugar a aminas quirales con interés farmacológico. Por otro lado, el complejo Rh-MaxPHOS fue aplicado por primera vez a la reacción de Pauson-Khand intramolecular de una forma satisfactoria obteniendo moderados rendimientos (30-70%) y elevadas purezas ópticas (hasta un 86%) para diversos 1,6-eninos. Por consiguiente, se pensó en preparar otros compuestos metálicos con la misma aminodifosfina. Concretamente, se consideró en coordinar la difosfina MaxPHOS con iridio como metal y aplicar el compuesto en catálisis asimétrica. Específicamente, se aplicó en la hidrogenación asimétrica de enlaces C=C (olefinas trisustituidas con grupo polar adyacente) y C=N (iminas), donde la hidrogenación con rodio no permite reducir u obtener los productos finales deseados con elevada pureza óptica. En el marco del estudio de la hidrogenación asimétrica con nuestro catalizador quiral Rh-MaxPHOS, se decidió extender esta metodología a otro tipo de compuestos que, a su vez, también dieran lugar a productos de interés farmacológico. El grupo de la profesora Escubedo estaba interesada en el estudio de los efectos biológicos de cada enantiómero del MDMA, más conocido como éxtasis (3,4-metilenedioximetanfetamina), para analizar su interacción en los receptores nicotínicos acetilcolina. Teniendo en cuenta los buenos resultados obtenidos con el complejo Rh-MaxPHOS en la hidrogenación de varios tipos de sustratos, se planteó una colaboración en la que propusimos una síntesis asimétrica mediante la hidrogenación enantioselectiva de ß-aril-enamidas catalizada por el complejo de rodio (I) Rh-7. Desafortunadamente, esta ruta sintética no ofreció buenos resultados y se buscó una vía alternativa. Con este propósito, visualizamos una nueva y eficiente síntesis de ambos enantiómeros del MDMA basada en una reducción diastereomerica de iminas derivadas de la terc-butilsulfinamida ópticamente pura, que proporciona un simple y práctico método de obtener ambos enantiómeros del MDMA. Otra aplicación en catálisis asimétrica con el complejo Rh-7, se basó en llevar a cabo una nueva síntesis del ácido 2-aminosubérico, teniendo como etapa clave la hidrogenación enantioselectiva. El ácido 2-aminosubérico se ha utilizado en la síntesis de análogos de péptidos bioactivos como la oxitocina, vasopresina, somatostatina o calcitonina como cadena metilénica metabólicamente estable en la sustitución del puente disulfuro entre cisteínas. En este sentido, una de las líneas abiertas en nuestro grupo de investigación es la síntesis de derivados de somatostatina. Así, nos planteamos el diseño y efectuamos una síntesis de péptidos análogos de somatostatina mediante la introducción del ácido 2-aminosubérico en sustitución del puente disulfuro en la cadena peptídica, manteniendo otros aminoácidos no naturales en la secuencia que habían ofrecido una elevada actividad biológica. También, quisimos estudiar la importancia de la longitud de la cadena metilénica en este péptido cíclico. Así, sintetizamos otro análogo peptídico mediante la introducción de un aminoácido natural comercialmente disponible (Fmoc-D-Glutámico) en lugar del ácido 2-aminosubérico y de este modo, comparamos sus estructuras por RMN., Asymmetric catalytic hydrogenation is one of the most important methodologies in organic synthesis. This process allows significant access to multi-gram scale chiral products using inexpensive hydrogen and low catalyst loadings. Such hydrogenations require the use of metal complexes containing chiral ligands, which are attractive in terms of atomic economy. So far a variety of chiral ligands have been described and used in enantioselective hydrogenations. In our research group, there is a long history of work in this field and we have recently designed and synthesized ligands with chirality at the phosphorus atom; aminodiphosphine MaxPHOS being one example. The Rh-complex with MaxPHOS ligand (Rh-7) has offered excellent enantiomeric excesses (ee) in the asymmetric hydrogenation of a and ß dehydroaminoacids. These promising results opened the door to a more detailed hydrogenation study of this complex with various types of substrates. The first objective of this thesis was to expand the scope of this catalyst to different N-acyl enamides (ß-ketoenamides, cyclic tri-substituted enamides and a-heteroarylenamides) which subsequently give rise to chiral amines of pharmacological interest. Furthermore, the Rh-MaxPHOS complex was for first time applied to the intramolecular Pauson-Khand reaction satisfactorily obtaining moderate yields (30-70%) and high optical purity (up to 86%) for various 1,6 -enines. Therefore, other metal compounds with the same aminodiphosphine were prepared. Specifically, it coordinated to iridium and applied in asymmetric catalysis. It was then applied in the asymmetric hydrogenation of C = C (tri-substituted olefins with adjacent polar group) and C = N (imines), where the hydrogenation with rhodium fails to reduce the desired final products with high optical purity. Under the study of the asymmetric hydrogenation with our chiral catalyst Rh-MaxPHOS (Rh-7), it was decided to extend this approach to other types of compounds which, in turn, also gave rise to products of pharmacological interest. The group of the professor Elena Escubedo was interested in the study of the biological effects of each enantiomer of MDMA, known as ecstasy (3,4-methylenedioxymethamphetamine), to analyze their interaction in the nicotinic acetylcholine receptors. Taking into account the promising results obtained with the Rh-7 complex in the hydrogenation of various types of substrates, a partnership in which we proposed an asymmetric synthesis by enantioselective hydrogenation of ß-aryl-enamides catalyzed by rhodium complex was proposed employing Rh-7. Unfortunately, this synthetic route did not offer good results and an alternative route was sought. For this purpose, we envisioned a new and efficient synthesis of both enantiomers of MDMA based optically pure diastereomeric reduction of imines derived from tert-butylsulfinamide, which provides a simple and practical method of obtaining both enantiomers of MDMA. Another application in asymmetric catalysis with Rh-7 complex was based on performing a new synthesis of 2-aminosuberic acid, with the key enantioselective hydrogenation stage. 2-aminosuberic acid has been used in the synthesis of analogues of bioactive peptides such as oxytocin, vasopressin, somatostatin, or calcitonin as a metabolically stable methylene chain in the replacement of the disulfide bridge between cysteines. In this sense, one of the open lines in our research group is the synthesis of analogues of somatostatin. Thus, we designed and synthesized analogues of somatostatin peptides with 2-aminosuberic acid replacing the disulfide bridge in the peptide chain, keeping other unnatural amino acids in the sequence that had previously displayed a high biological activity. Also, we wanted to study the importance of the methylene chain length of this cyclic peptide. Thus, another peptide analog was synthesized by introducing a commercially available natural amino acid (Fmoc-D-Glutamic acid) instead of 2-aminosuberic acid and we compared their structures by NMR.
- Published
- 2014
16. Rhodium-Catalyzed Pauson–Khand Reaction Using a Small-Bite-Angle P-Stereogenic C1-Diphosphine Ligand
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Cristóbal-Lecina, Edgar, primary, Costantino, Andrea R., additional, Grabulosa, Arnald, additional, Riera, Antoni, additional, and Verdaguer, Xavier, additional
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- 2015
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17. MaxPHOS Ligand: PH/NH Tautomerism and Rhodium- Catalyzed Asymmetric Hydrogenations
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Cristóbal-Lecina, Edgar, primary, Etayo, Pablo, additional, Doran, Séan, additional, Revés, Marc, additional, Martín-Gago, Pablo, additional, Grabulosa, Arnald, additional, Costantino, Andrea R., additional, Vidal-Ferran, Anton, additional, Riera, Antoni, additional, and Verdaguer, Xavier, additional
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- 2014
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18. Structure–delivery relationships of lysine-based gemini surfactants and their lipoplexes
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Damen, Mark, primary, Cristóbal-Lecina, Edgar, additional, Sanmartí, Glòria Colom, additional, van Dongen, Stijn F. M., additional, García Rodríguez, Cristina L., additional, Dolbnya, Igor P., additional, Nolte, Roeland J. M., additional, and Feiters, Martin C., additional
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- 2014
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19. Correction: Structure–delivery relationships of lysine-based gemini surfactants and their lipoplexes
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Damen, Mark, primary, Cristóbal-Lecina, Edgar, additional, Sanmartí, Glòria Colom, additional, van Dongen, Stijn F. M., additional, García Rodríguez, Cristina L., additional, Dolbnya, Igor P., additional, Nolte, Roeland J. M., additional, and Feiters, Martin C., additional
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- 2014
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20. Targeted nanoliposomes to improve enzyme replacement therapy of Fabry disease.
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Tomsen-Melero, Judit, Moltó-Abad, Marc, Merlo-Mas, Josep, Díaz-Riascos, Zamira V., Cristóbal-Lecina, Edgar, Soldevila, Andreu, Altendorfer-Kroath, Thomas, Danino, Dganit, Ionita, Inbal, Pedersen, Jan Skov, Snelling, Lyndsey, Clay, Hazel, Carreño, Aida, Corchero, José L., Pulido, Daniel, Casas, Josefina, Veciana, Jaume, Schwartz Jr., Simó, Sala, Santi, and Font, Albert
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ANGIOKERATOMA corporis diffusum , *ENZYME replacement therapy , *GALACTOSIDASES , *LYSOSOMAL storage diseases , *CENTRAL nervous system , *SYMPTOMS - Abstract
The central nervous system represents a major target tissue for therapeutic approach of numerous lysosomal storage disorders. Fabry disease arises from the lack or dysfunction of the lysosomal alpha-galactosidase A (GLA) enzyme, resulting in substrate accumulation and multisystemic clinical manifestations. Current enzyme replacement therapies (ERTs) face limited effectiveness due to poor enzyme biodistribution in target tissues and inability to reach the brain. We present an innovative drug delivery strategy centered on a peptide-targeted nanoliposomal formulation, designated as nanoGLA, engineered to selectively deliver a recombinant human GLA (rhGLA) to target tissues. In a Fabry mouse model, nanoGLA demonstrated improved efficacy, inducing a notable reduction in Gb3 deposits in contrast to non-nanoformulated GLA, even in the brain, highlighting the potential of the nano-GLA to address both systemic and cerebrovascular manifestations of Fabry disease. The EMA has granted the Orphan Drug Designation to this product, underscoring the potential clinical superiority of nanoGLA over authorized ERTs and encouraging to advance it toward clinical translation. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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