摘要:
The present disclosure relates to methods and compositions for reprogramming cells to a pluripotent state. In particular, it relates to an integration- and feeder cell-free method for reprogramming primary human fibroblast cells to induced pluripotent stem cells (iPSCs).
摘要:
The present disclosure relates generally to novel methods and compositions for using engineered reprogramming factor(s) for the creation of induced pluripotent stem cells (iPSCs) through a kinetically controlled process. Specifically, this disclosure relates to establishing combinations of reprogramming factors, including fusions between conventional reprogramming factors with transactivation domains, optimized for reprogramming various types of cells. More specifically, the exemplary methods disclosed herein can be used for creating induced pluripotent stem cells from various mammalian cell types, including human fibroblasts. Exemplary methods of feeder-free derivation of human induced pluripotent stem cells using synthetic messenger RNA are also disclosed.
摘要:
The present disclosure relates generally to novel methods and compositions for using engineered reprogramming factor(s) for the creation of induced pluripotent stem cells (iPSCs) through a kinetically controlled process. Specifically, this disclosure relates to establishing combinations of reprogramming factors, including fusions between conventional reprogramming factors with transactivation domains, optimized for reprogramming various types of cells. More specifically, the exemplary methods disclosed herein can be used for creating induced pluripotent stem cells from various mammalian cell types, including human fibroblasts. Exemplary methods of feeder-free derivation of human induced pluripotent stem cells using synthetic messenger RNA are also disclosed.
摘要:
The present invention relates to methods for changing the state of differentiation of a eukaryotic cell, the methods comprising introducing mRNA encoding one or more reprogramming factors into a cell and maintaining the cell under conditions wherein the cell is viable and the mRNA that is introduced into the cell is expressed in sufficient amount and for sufficient time to generate a cell that exhibits a changed state of differentiation compared to the cell into which the mRNA was introduced, and compositions therefor. For example, the present invention provides mRNA molecules and methods for their use to reprogram human somatic cells into pluripotent stem cells.
摘要:
The present invention provides a method for improving iPS cell generation efficiency, which comprises a step of introducing a Myc variant having the following features: (1) having an activity to improve iPS cell generation efficiency which is comparative to, or greater than that of c-Myc; and (2) having a transformation activity which is lower than that of c-Myc; or a nucleic acid encoding the variant, in a nuclear reprogramming step. Also, the present invention provides a method for preparing iPS cells, which comprises a step of introducing the above Myc variant or a nucleic acid encoding the variant and a combination of nuclear reprogramming factors into somatic cells. Moreover, the present invention provides iPS cells comprising the nucleic acid encoding the Myc variant which can be obtained by the above method, and a method for preparing somatic cells which comprises inducing differentiation of the iPS cells.
摘要:
The disclosure relates to a method of reprogrammlng one or more somatic cells, e.g., partially differentiated or fully/terminally differentiated somatic cells, to a less differentiated state, e.g., a pluripotent or multipotent state. In further embodiments the invention also relates to reprogrammed somatic cells produced by methods of the invention, to chimeric animals comprising reprogrammed somatic cells of the invention, to uses of said cells, and to methods for identifying agents useful for reprogramming somatic cells.
摘要:
Methods and composition of induction of pluripotent stem cells and other desired cell types are disclosed. For example, in certain aspects methods for generating essentially vector-free induced pluripotent stem cells are described. Furthermore, the invention provides induced pluripotent stem cells and desired cell types essentially free of exogenous vector elements with the episomal expression vectors to express differentiation programming factors.
摘要:
This invention provides a method of producing an induced pluripotent stem cell comprising the step of introducing at least one kind of non-viral expression vector (more preferably a plasmid vector) incorporating at least one gene that encodes a reprogramming factor into a somatic cell. An induced pluripotent stem cell wherein no exogenous genes induced is integrated into the cellular genome is also provided.
摘要:
Disclosed is a method for manufacturing stem cells including preparing Oct-4 gene, Sox2 gene, Nanog gene, and fourth gene from human embryonic stem cells, and allowing each of the genes to be infected in host cells using a lentiviral vector system to generate viruses in which each of the genes are induced; concentrating or mixing each of the viruses to prepare a virus concentrated mixture, and mixing the virus concentrated mixture and a first culture solution to prepare a virus solution; floating human somatic cells having been cultivated in advance in a first culture dish, and mixing and reacting the floated somatic cells and the virus solution to prepare a somatic cell- virus mixture; adding and retaining the somatic cell-virus mixture as is in a second culture dish including a second culture solution to induce the genes in the somatic cells; and cultivating the somatic cells.