摘要:
A tissue engineering scaffold for growing cells can include a plurality of biocompatible microspheres linked together to form a three-dimensional matrix. The matrix can include a plurality of pores for growing cells. The biocompatible microspheres can include first and second sets of microspheres. The first set of microspheres can have a first characteristic, and a first predetermined spatial distribution with respect to the three-dimensional matrix. The second set of microspheres can have a second characteristic that is different from the first characteristic, and a second predetermined spatial distribution that is different from the first predetermined spatial distribution with respect to the three-dimensional matrix. The first and second characteristics can selected a composition, polymer, particle size, particle size distribution, type of bioactive agent, type of bioactive agent combination, bioactive agent concentration, amount of bioactive agent, rate of bioactive agent release, mechanical strength, flexibility, rigidity, color, radiotranslucency, radiopaqueness, or the like.
摘要:
Methods can prepare tissue engineering scaffolds that include a plurality of biocompatible microspheres linked together to form a three-dimensional matrix. The matrix can include a plurality of pores for growing cells. The biocompatible microspheres can include first and second sets of microspheres. The first set of microspheres can have a first characteristic, and a first predetermined spatial distribution with respect to the three-dimensional matrix. The second set of microspheres can have a second characteristic that is different from the first characteristic, and a second predetermined spatial distribution that is different from the first predetermined spatial distribution with respect to the three-dimensional matrix. The first and second characteristics can selected a composition, polymer, particle size, particle size distribution, type of bioactive agent, type of bioactive agent combination, bioactive agent concentration, amount of bioactive agent, rate of bioactive agent release, mechanical strength, flexibility, rigidity, color, radiotranslucency, radiopaqueness, or the like.
摘要:
Methods can prepare tissue engineering scaffolds that include a plurality of biocompatible microspheres linked together to form a three-dimensional matrix. The matrix can include a plurality of pores for growing cells. The biocompatible microspheres can include first and second sets of microspheres. The first set of microspheres can have a first characteristic, and a first predetermined spatial distribution with respect to the three-dimensional matrix. The second set of microspheres can have a second characteristic that is different from the first characteristic, and a second predetermined spatial distribution that is different from the first predetermined spatial distribution with respect to the three-dimensional matrix. The first and second characteristics can selected a composition, polymer, particle size, particle size distribution, type of bioactive agent, type of bioactive agent combination, bioactive agent concentration, amount of bioactive agent, rate of bioactive agent release, mechanical strength, flexibility, rigidity, color, radiotranslucency, radiopaqueness, or the like.
摘要:
A tissue engineering scaffold for growing cells can include a plurality of biocompatible microspheres linked together to form a three-dimensional matrix. The matrix can include a plurality of pores for growing cells. The biocompatible microspheres can include first and second sets of microspheres. The first set of microspheres can have a first characteristic, and a first predetermined spatial distribution with respect to the three-dimensional matrix. The second set of microspheres can have a second characteristic that is different from the first characteristic, and a second predetermined spatial distribution that is different from the first predetermined spatial distribution with respect to the three-dimensional matrix. The first and second characteristics can selected a composition, polymer, particle size, particle size distribution, type of bioactive agent, type of bioactive agent combination, bioactive agent concentration, amount of bioactive agent, rate of bioactive agent release, mechanical strength, flexibility, rigidity, color, radiotranslucency, radiopaqueness, or the like.
摘要:
Methods can prepare tissue engineering scaffolds that include a plurality of biocompatible core/shell microspheres linked together to form a three-dimensional matrix. The matrix can include a plurality of pores for growing cells. The biocompatible microspheres can include first and second sets of microspheres. The first set of microspheres can have a first characteristic, and a first predetermined spatial distribution with respect to the three-dimensional matrix. The second set of microspheres can have a second characteristic that is different from the first characteristic, and a second predetermined spatial distribution that is different from the first predetermined spatial distribution with respect to the three-dimensional matrix. The first and second characteristics can selected a composition, polymer, particle size, particle size distribution, type of bioactive agent, type of bioactive agent combination, bioactive agent concentration, amount of bioactive agent, rate of bioactive agent release, mechanical strength, flexibility, rigidity, color, radiotranslucency, radiopaqueness, or the like.
摘要:
The present invention is directed to a hydrogel network comprised of a physically cross-linked polymer and a chemically cross-linked polymer or physically entangled copolymer containing living cells, such as chondrocytes, encapsulated therein. In a preferred aspect, the physically cross-linked polymer is selected from the group consisting of thermally gelling polysaccharides and proteins, such as agarose or gelatin, and the chemically cross-linked or physically entangled polymer is synthesized from a water-soluble vinyl monomer, either as a homopolymer or copolymer, such as polyethylene glycol diacrylate (“PEG-DA”) and 2-hydroxyethyl methacrylate (“HEMA”).
摘要:
The present invention is directed to a hydrogel network comprised of a physically cross-linked polymer and a chemically cross-linked polymer or physically entangled copolymer containing living cells, such as chondrocytes, encapsulated therein. In a preferred aspect, the physically cross-linked polymer is selected from the group consisting of thermally gelling polysaccharides and proteins, such as agarose or gelatin, and the chemically cross-linked or physically entangled polymer is synthesized from a water-soluble vinyl monomer, either as a homopolymer or copolymer, such as polyethylene glycol diacrylate (“PEG-DA”) and 2-hydroxyethyl methacrylate (“HEMA”).
摘要:
A method of transforming human cells into mechanosensory hair cells (MHCs), such as inner hear hair cells in the cochlea and vestibular organs, can include: causing human Wharton's jelly cells (hWJCs) to increase expression of or biological function of HATH1 so as to transform the hWJCs into MHCs. The method can include; administering a nucleic acid that encodes HATH1 to the hWJCs; causing inhibited expression of or biological function of HES1 and/or HES5 in the hWJCs; administering a nucleic acid that inhibits HES1 and/or a nucleic acid that inhibits HES5 to the hWJCs; causing inhibited expression of or biological function of HES1 and/or HES5 in the WJCs by administering a nucleic acid that inhibits HES1 and/or a nucleic acid that inhibits HES5; nucleic acids are administered includes a sequence of SEQ ID NO: 2, SEQ ID NO: 3, and/or SEQ ID NO: 4.
摘要翻译:将人类细胞转化为机械感染毛细胞(MHC)的方法,例如耳蜗和前庭器官内部听到的毛细胞,可以包括:引起人类沃顿的果冻细胞(hWJCs)增加HATH1的表达或生物学功能,以便 将hWJCs转化为MHC。 该方法可以包括 向hWJCs施用编码HATH1的核酸; 导致hWJCs中HES1和/或HES5的表达或生物学功能受到抑制; 施用抑制HES1的核酸和/或对hWJC抑制HES5的核酸; 通过施用抑制HES1的核酸和/或抑制HES5的核酸来抑制WJCs中HES1和/或HES5的表达或生物学功能; 核酸被给予包括SEQ ID NO:2,SEQ ID NO:3和/或SEQ ID NO:4的序列。
摘要:
An implant can include a plurality of polymeric fibers associated together into a fibrous body. The fibrous body is capable of being shaped to fit a tracheal defect and capable of being secured in place by suture or by bioadhesive. The fibrous body can have aligned fibers (e.g., circumferentially aligned) or unaligned fibers. The fibrous body can be electrospun. The fibrous body can have a first characteristic in a first gradient distribution across at least a portion of the fibrous body. The fibrous body can include one or more structural reinforcing members, such as ribbon structural reinforcing members, which can be embedded in the plurality of fibers. The fibrous body can include one or more structural reinforcing members bonded to the fibers with liquid polymer as an adhesive, the liquid polymer having a substantially similar composition of the fibers.
摘要:
The present invention is directed to a hydrogel network comprised of a physically cross-linked polymer and a chemically cross-linked polymer or physically entangled copolymer containing living cells, such as chondrocytes, encapsulated therein. In a preferred aspect, the physically cross-linked polymer is selected from the group consisting of thermally gelling polysaccharides and proteins, such as agarose or gelatin, and the chemically cross-linked or physically entangled polymer is synthesized from a water-soluble vinyl monomer, either as a homopolymer or copolymer, such as polyethylene glycol diacrylate (“PEG-DA”) and 2-hydroxyethyl methacrylate (“HEMA”).