摘要:
A method of differentiating cells into CK19-positive cells capable of producing hair follicle-like and hair structure-like can include: providing a tissue scaffold; seeding cells into the scaffold, the cells being capable of differentiation; incubating the scaffold having the cells in a cell growth media; and incubating the scaffold having the cells in an osteogenic differentiation medium sufficient for CK19-positive cells to be generated in the scaffold. The tissue scaffold can be a decellularized Whartons' jelly matrix. The cell growth media excludes osteogenic differentiation components: dexamethasone, β-glycerophosphate, 1α,25-hydroxyvitamin D3, and ascorbic acid 2-phosphate. The osteogenic differentiation medium includes the osteogenic differentiation components. The cells can be mesenchymal cells, such as WJMSCs.
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 related to compositions comprising decellularized cartilage tissue powder in the forms of paste, putty, hydrogel, and scaffolds, methods of making compositions, and methods of using these compositions for treating osteochondral defects and full- or partial-thickness cartilage defects.
摘要:
A method of differentiating cells into CK19-positive cells capable of producing hair follicle-like and hair structure-like can include: providing a tissue scaffold; seeding cells into the scaffold, the cells being capable of differentiation; incubating the scaffold having the cells in a cell growth media; and incubating the scaffold having the cells in an osteogenic differentiation medium sufficient for CK19-positive cells to be generated in the scaffold. The tissue scaffold can be a decellularized Whartons' jelly matrix. The cell growth media excludes osteogenic differentiation components: dexamethasone, β-glycerophosphate, 1α,25-hydroxyvitamin D3, and ascorbic acid 2-phosphate. The osteogenic differentiation medium includes the osteogenic differentiation components. The cells can be mesenchymal cells, such as WJMSCs.
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 related to compositions comprising decellularized cartilage tissue powder in the forms of paste, putty, hydrogel, and scaffolds, methods of making compositions, and methods of using these compositions for treating osteochondral defects and full- or partial-thickness cartilage defects.
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:
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 implantable hydrogel precursor composition can include: a cross-linkable polymer matrix that is biocompatible; and a plurality of polymer particles in the cross-linkable polymer matrix. The cross-linkable polymer matrix can include a cross-linkable hyaluronic acid polymer that has cross-linkable functional groups. The hyaluronic acid polymer can be a methacrylated hyaluronic acid polymer. The methacrylated hyaluronic acid polymer can have a molecular weight from about 500 kDa to about 1.8 MDa. The polymer particles can include a cross-linked hyaluronic acid. The cross-linkable polymer matrix having the polymer particles has a yield stress. The cross-linkable polymer matrix having the polymer particles has shape retention at physiological temperatures. The composition can include live cells in the cross-linkable polymer matrix. The composition can include a biologically active agent in the cross-linkable polymer matrix.
摘要:
An implantable composition can include methacrylated solubilized devitalized cartilage (MeSDVC) with or without devitalized cartilage (DVC) particles. These compositions can be hydrogel precursors. After implantation, the MeSDVC may be crosslinked so as to form a hydrogel. The crosslinked hydrogel can include the DVC particles. A hydrogel precursor matrix (e.g., not crosslinked) can include a crosslinkable substance that can be crosslinked into a hydrogel, where DVC particles are included in the precursor matrix. The hydrogel precursor matrix can be located in a tissue defect site, such as a hole or recess in a cartilage or bone, and then crosslinked into a hydrogel that has the DVC particles therein.