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 differentiation or growth rate of the cells in the hydrogel. Also, the hydrogel system may be used for sustained delivery of a therapeutic protein, for example in the treatment of liver cancer, fibrosis or hepatitis.
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,可以选择H2O2的摩尔浓度来影响水凝胶中细胞的分化或生长速率。 此外,水凝胶系统可用于持续递送治疗性蛋白质,例如用于治疗肝癌,纤维化或肝炎。
摘要:
A method of creating intracellular artificial nanostructures in situ, which employees a chemical precursor. The precursor does not self-assemble due to the presence of a cleavable motif linked to it. When the precursor comes inside live cells by an uptaking mechanism on the cell membrane, the cleavable motif is then to be removed by an enzymatic action of a first enzyme. Without the cleavable motif, the precursor now engages in a self-assembling process to form nanostructures within the live cells, which may cause formation of a hydrogel. Furthermore, the self-assembling process can be made reversible by employing a second enzyme which puts the cleavable motif back to the precursor, whereby dissolving the nanostructures into solution.
摘要:
The present invention pertains to the design and application of a supramolecular hydrogel having a three-dimensional, self-assembling, elastic, network structure comprising non-polymeric, functional molecules and a liquid medium, whereby the functional molecules are noncovalently crosslinked. The functional molecules may be, for instance, anti-inflammatory molecules, antibiotics, metal chelators, anticancer agents, small peptides, surface-modified nanoparticles, or a combination thereof. The design of the hydrogel includes: 1) modifying functional molecules to convert them into hydrogelators while enhancing or maintaining their therapeutic properties and 2) triggering the hydrogelation process by physical, chemical, or enzymatic processes, thereby resulting in the creation of a supramolecular hydrogel via formation of non-covalent crosslinks by the functional molecules. Applications of the present invention include use of the supramolecular hydrogel, for instance, as a biomaterial for wound healing, tissue engineering, drug delivery, and drug/inhibitor screening.
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 differentiation or growth rate of the cells in the hydrogel. Also, the hydrogel system may be used for sustained delivery of a therapeutic protein, for example in the treatment of liver cancer, fibrosis or hepatitis.
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,可以选择H2O2的摩尔浓度来影响水凝胶中细胞的分化或生长速率。 此外,水凝胶系统可用于持续递送治疗性蛋白质,例如用于治疗肝癌,纤维化或肝炎。
摘要:
The present invention provides a method for controlling the fate of mammalian cells or microorganisms by the enzymatic formation of intracellular nanostructures. Enzymatic reactions trigger the intracellular self-assembly to convert a proper precursor into another molecule or nanoobject that will aggregate inside cells or inside or between tissues or organs. Further, this invention provides a method for making artificial nanostructures inside or between tissues or organs, by injecting a proper designed precursor into tissues or organs, and enzymatic reaction converting the precursor to a hydrogelator to form artificial nanostructures and inducing hydrogelation and at the state of a disease, another enzyme converts the hydrogelator back to precursor to induce gel-to-sol transition to release a drug. The present invention can be applied to treat diseases caused by the malfunction of cells, infection caused by microorganisms and provides a novel route for controlled drug releases, formation of new therapeutic agents, and in-situ formation of hydrogel to treat degenerative diseases such as osteoarthritis.
摘要:
A method of creating intracellular artificial nanostructures in situ, which employees a chemical precursor. The precursor does not self-assemble due to the presence of a cleavable motif linked to it. When the precursor comes inside live cells by an uptaking mechanism on the cell membrane, the cleavable motif is then to be removed by an enzymatic action of a first enzyme. Without the cleavable motif, the precursor now engages in a self-assembling process to form nanostructures within the live cells, which may cause formation of a hydrogel. Furthermore, the self-assembling process can be made reversible by employing a second enzyme which puts the cleavable motif back to the precursor, whereby dissolving the nanostructures into solution.
摘要:
The present invention relates to a method of detecting the CACNA1H mutant gene of childhood absence epilepsy-the main function gene, the said method is directly sequencing or restriction analysis. The present invention relates to CACNA1H mutant gene. The present invention further relates to the use of the said detection and mutant gene. The present invention connects the CACNA1H gene with medicine for treating childhood absence epilepsy, proving new target site for medicine for treating the same. The present invention establishes the foundation for developing new medicines for treating childhood absence epilepsy and other type of idiopathic system epilepsy as well as other system diseases associated with CACNA1H gene.