摘要:
There are provided methods for producing a hydrogel that is capable of adhesion of cells and which comprises enzymatically cross-linked conjugates of a hydrogel forming agent and a flavonoid, formed from a reaction using peroxide and peroxidase. Hydrogels produced by such methods and methods of using the hydrogels are also provided.
摘要:
In a process of forming a hydrogel from a mixture comprising hydrogen peroxide (H2O2), horseradish peroxidase (HRP), and a polymer comprising a crosslinkable phenol group, the gelation rate in the solution and the crosslinking density in the hydrogel can be independently adjusted or controlled by selection of the molarity of H2O2 and concentration of HRP in the solution when the molarity of H2O2 is limited to be within a range and the concentration of HRP is limited to be above a threshold. A method for determining the range and threshold is disclosed. The hydrogel may be used to grow cells, in which case, the molarity of H2O2 may be selected to affect the differentiaion or growth rate of the cells in the hydrogel.
摘要翻译:在由包含过氧化氢(H 2 O 2),辣根过氧化物酶(HRP)和包含可交联酚基的聚合物的混合物形成水凝胶的方法中,可以独立地调节溶液中的凝胶化速率和水凝胶中的交联密度, 当H 2 O 2的摩尔浓度被限制在一个范围内并且HRP的浓度被限制在高于阈值时,通过选择H 2 O 2的摩尔浓度和HRP浓度来控制。 公开了一种用于确定范围和阈值的方法。 水凝胶可用于生长细胞,在这种情况下,可选择H2O2的摩尔浓度以影响水凝胶中细胞的分化或生长速率。
摘要:
A polymer fiber is formed by hydrodynamic spinning. Fluids are forced to flow through a conduit to form a laminar flow comprising three or more layers of generally coaxial fluid flows, at respective flow rates selected to define a cross-section of a tubular middle layer of the fluid flows. The middle layer comprises a cross-linkable polymer precursor. Another layer of the fluid flows comprise a cross-linking agent. The polymer precursor, cross-linking agent and fluids are selected to prevent substantial diffusion of the polymer precursor away from the middle layer, and to allow a portion of the cross-linking agent to diffuse from the another layer into the middle layer to facilitate cross-linking of the polymer precursor in the middle layer to form a tubular polymer layer in a polymer fiber. The polymer layer thus has a cross-section generally corresponding to the cross-section of the middle layer.
摘要:
There is provided a method of forming a hydrogel, the method comprising: providing a mixture of a polymer comprising a cross-linkable pendant phenolic group, peroxidase, H2O2, fibrinogen, and thrombin, at concentration sufficient to enzymatically cross-link the polymer and to cleave the fibrinogen to yield fibrin; and allowing the mixture to form a hydrogel. There is also provided a hydrogel comprising a cross-linked network of a polymer interpenetrated by fibrin fibers, the polymer cross-linked by oxidative coupling between phenolic groups pendant on the polymer.
摘要翻译:提供了形成水凝胶的方法,该方法包括:提供包含可交联的侧基酚基,过氧化物酶,H 2 O 2,纤维蛋白原和凝血酶的聚合物的混合物,其浓度足以使聚合物酶促交联,并且 切断纤维蛋白原产生纤维蛋白; 并使混合物形成水凝胶。 还提供了包含由纤维蛋白纤维互穿的聚合物的交联网络的水凝胶,该聚合物通过在聚合物上悬挂的酚基之间的氧化偶联而交联。
摘要:
A polymer fiber is formed by hydrodynamic spinning. Fluids are forced to flow through a conduit to form a laminar flow comprising three or more layers of generally coaxial fluid flows, at respective flow rates selected to define a cross-section of a tubular middle layer of the fluid flows. The middle layer comprises a cross-linkable polymer precursor. Another layer of the fluid flows comprise a cross-linking agent. The polymer precursor, cross-linking agent and fluids are selected to prevent substantial diffusion of the polymer precursor away from the middle layer, and to allow a portion of the cross-linking agent to diffuse from the another layer into the middle layer to facilitate cross-linking of the polymer precursor in the middle layer to form a tubular polymer layer in a polymer fiber. The polymer layer thus has a cross-section generally corresponding to the cross-section of the middle layer.
摘要:
There is provided a method of forming a hydrogel, the method comprising: providing a mixture of a polymer comprising a cross-linkable pendant phenolic group, peroxidase, H2O2, fibrinogen, and thrombin, at concentration sufficient to enzymatically cross-link the polymer and to cleave the fibrinogen to yield fibrin; and allowing the mixture to form a hydrogel. There is also provided a hydrogel comprising a cross-linked network of a polymer interpenetrated by fibrin fibers, the polymer cross-linked by oxidative coupling between phenolic groups pendant on the polymer.
摘要翻译:提供了形成水凝胶的方法,该方法包括:提供包含可交联的侧基酚基,过氧化物酶,H 2 O 2,纤维蛋白原和凝血酶的聚合物的混合物,其浓度足以使聚合物酶促交联,并且 切断纤维蛋白原产生纤维蛋白; 并使混合物形成水凝胶。 还提供了包含由纤维蛋白纤维互穿的聚合物的交联网络的水凝胶,该聚合物通过在聚合物上悬挂的酚基之间的氧化偶联而交联。