Abstract:
The present invention relates to a process for the preparation of oligo(alkylene glycol) functionalized polyisocyanopeptides comprising the steps of functionalizing an isocyanopeptide with oligo-(alkylene glycol) side chains and subsequently polymerizing the oligo-alkylene glycol functionalized isocyanopeptides. Several isocyanopeptide may be functionalized with various linear or non-linear oligo-(alkylene glycol) side chains having variable chain length. The alkylene glycol may be selected from the group consisting of ethylene-, propylene-, butylene- or pentylene glycol. Preferably the isocyanopeptides are functionalized with at least 3 ethylene glycol side chains. The peptides may comprise L aminoacids, D-aminoacids or D, L-aminoacids. The obtained oligoalkylene functionalized polyisocyanopeptides are a new class of materials with unique thermo-responsive properties.
Abstract:
The present invention relates to a process for the preparation of oligo(alkylene glycol) functionalized polyisocyanopeptides comprising the steps of functionalizing an isocyanopeptide with oligo-(alkylene glycol) side chains and subsequently polymerizing the oligo-alkylene glycol functionalized isocyanopeptides. Several isocyanopeptide may be functionalized with various linear or non-linear oligo-(alkylene glycol) side chains having variable chain length. The alkylene glycol may be selected from the group consisting of ethylene-, propylene-, butylene- or pentylene glycol. Preferably the isocyanopeptides are functionalized with at least 3 ethylene glycol side chains. The peptides may comprise L aminoacids, D-aminoacids or D, L-aminoacids. The obtained oligoalkylene functionalized polyisocyanopeptides are a new class of materials with unique thermo-responsive properties.
Abstract:
Procedimiento de preparación de isocianopéptido(s) de polioligo(alquilenglicol) que comprende las etapas de funcionalizar un isocianopéptido con cadenas laterales de oligo-(alquilenglicol), que tiene menos de 10 unidades de alquilenglicol, y posteriormente polimerizar los isocianopéptidos funcionalizados con oligo-alquilenglicol en un disolvente orgánico en presencia de un catalizador de níquel (II), por lo que los isocianopéptidos funcionalizados son isocianopéptidos sustituidos con alquilenglicol con un motivo peptídico sustituido en el terminal C con la cadena de oligo(alquilenglicol) obtenida mediante un proceso en el que un residuo de aminoácido se acopla a una cadena de (alquilen)glicol, seguido de un acoplamiento peptídico secuencial para introducir el número deseado de sustituyentes de aminoácidos, seguido luego por la formilación del terminal N del segmento peptídico y la posterior deshidratación para proporcionar dicho isocianopéptido funcionalizado con oligoalquilenglicol.
Abstract:
The invention relates to a process for making an oligo(alkylene glycol) functionalized co-polyisocyanopeptide, wherein the process comprises the steps of: i) copolymerizing - a first comonomer of an oligo(alkylene glycol) functionalized isocyanopeptide grafted with a linking group and - a second comonomer of a non-grafted oligo(alkylene glycol) functionalized isocyanopeptide, wherein the molar ratio between the first comonomer and the second comonomer is :500 and 1:30 and ii) adding a reactant of a spacer unit and a cell adhesion factor to the copolymer obtained by step i), wherein the spacer unit is represented by general formula A-L-B, wherein the linking group and group A are chosen to react and form a first coupling and the cell adhesion factor and group B are chosen to react and form a second coupling, wherein the first coupling and the second coupling are independently selected from the group consisting of alkyne-azide coupling, dibenzocyclooctyne-azide coupling, oxanorbornadiene-based-azide couplings, vinylsulphone-thiol coupling, maleimide-thiol coupling, methyl methacrylate-thiol coupling, ether coupling, thioether coupling, biotin- strepavidin coupling, amine-carboxylic acid resulting in amides linkages, alcohol- carboxylic acid coupling resulting in esters linkages and NHS-Ester (N- Hydroxysuccinimide ester)-amine coupling and wherein group L is a linear chain segment having 10-60 bonds between atoms selected from C, N, O and S in the main chain.
Abstract:
Un proceso de fabricación de un copoliisocianopéptido con funcionalidad de oligo(alquilenglicol), proceso que comprende las etapas de: i) copolimerizar - un primer comonómero de un isocianopéptido con funcionalidad de oligo(alquilenglicol) injertado con un grupo enlazador y - un segundo comonómero de un isocianopéptido con funcionalidad de oligo(alquilenglicol) no injertado, en el que la proporción molar entre el primer comonómero y el segundo comonómero es de 1:500 y 1:30 y ii) añadir un reactante de una unidad espaciadora y un factor de adhesión celular al copolímero obtenido en la etapa i), en el que la unidad espaciadora se representa por la fórmula general A-L-B, en el que el grupo enlazador y el grupo A se seleccionan para que reaccionen y formen un primer acoplamiento, y el factor de adhesión celular y el grupo B se seleccionan para que reaccionan y formen un segundo acoplamiento, en el que el primer acoplamiento y el segundo acoplamiento se seleccionan independientemente del grupo que consiste en acoplamiento de alquino-azida, acoplamiento de dibenzociclooctina-azida, acoplamientos de azida a base de oxanorbornadieno, acoplamiento de vinilsulfona-tiol, acoplamiento de maleimida-tiol, acoplamiento de metilmetacrilato- tiol, acoplamiento de éter, acoplamiento de tioéter, acoplamiento de biotina-estrepavidina, amina-ácido carboxílico que da lugar a enlaces amida, acoplamiento de alcohol-ácido carboxílico que da lugar a enlaces éster y acoplamiento de éster de NHS (éster de N-hidroxisuccinimida)-amina y en el que el grupo L es un segmento de cadena lineal que tiene 10-60 enlaces entre los átomos seleccionados de C, N, O y S en la cadena principal.
Abstract:
The invention relates to a process for making an oligo(alkylene glycol) functionalized co-polyisocyanopeptide, wherein the process comprises the steps of: i) copolymerizing - a first comonomer of an oligo(alkylene glycol) functionalized isocyanopeptide grafted with a linking group and - a second comonomer of a non-grafted oligo(alkylene glycol) functionalized isocyanopeptide, wherein the molar ratio between the first comonomer and the second comonomer is :500 and 1:30 and ii) adding a reactant of a spacer unit and a cell adhesion factor to the copolymer obtained by step i), wherein the spacer unit is represented by general formula A-L-B, wherein the linking group and group A are chosen to react and form a first coupling and the cell adhesion factor and group B are chosen to react and form a second coupling, wherein the first coupling and the second coupling are independently selected from the group consisting of alkyne-azide coupling, dibenzocyclooctyne-azide coupling, oxanorbornadiene-based-azide couplings, vinylsulphone-thiol coupling, maleimide-thiol coupling, methyl methacrylate-thiol coupling, ether coupling, thioether coupling, biotin- strepavidin coupling, amine-carboxylic acid resulting in amides linkages, alcohol- carboxylic acid coupling resulting in esters linkages and NHS-Ester (N- Hydroxysuccinimide ester)-amine coupling and wherein group L is a linear chain segment having 10-60 bonds between atoms selected from C, N, O and S in the main chain.
Abstract:
The invention is directed to a cell culture comprising: a) a cell culturing medium for growing stem cells, b) a three-dimensional (3D) cell growth matrix and c) stem cells, wherein the cell culture has a critical stress σ
Abstract:
The invention is directed to a cell culture comprising: a) a cell culturing medium for growing stem cells, b) a three-dimensional (3D) cell growth matrix and c) stem cells, wherein the cell culture has a critical stress sc of 2-30 Pa, wherein the critical stress is a stress which marks an onset of strain stiffening and wherein the cell culture has a storage modulus G' measured at 37°C of 50-1000 Pa.
Abstract:
The invention relates to a process for making an oligo(alkylene glycol) functionalized co-polyisocyanopeptide, wherein the process comprises the steps of: i) copolymerizing - a first comonomer of an oligo(alkylene glycol) functionalized isocyanopeptide grafted with a linking group and - a second comonomer of a non-grafted oligo(alkylene glycol) functionalized isocyanopeptide, wherein the molar ratio between the first comonomer and the second comonomer is :500 and 1:30 and ii) adding a reactant of a spacer unit and a cell adhesion factor to the copolymer obtained by step i), wherein the spacer unit is represented by general formula A-L-B, wherein the linking group and group A are chosen to react and form a first coupling and the cell adhesion factor and group B are chosen to react and form a second coupling, wherein the first coupling and the second coupling are independently selected from the group consisting of alkyne-azide coupling, dibenzocyclooctyne-azide coupling, oxanorbornadiene-based-azide couplings, vinylsulphone-thiol coupling, maleimide-thiol coupling, methyl methacrylate-thiol coupling, ether coupling, thioether coupling, biotin- strepavidin coupling, amine-carboxylic acid resulting in amides linkages, alcohol- carboxylic acid coupling resulting in esters linkages and NHS-Ester (N- Hydroxysuccinimide ester)-amine coupling and wherein group L is a linear chain segment having 10-60 bonds between atoms selected from C, N, O and S in the main chain.