摘要:
This method of producing induced pluripotent stem cells involves a step for introducing an initialization factor into somatic cells of a mammal, and culturing in a neural stem cell culture medium to obtain induced neural stem cell-like cells, and a step for cultivating said induced neural stem cell-like cells in a growth medium to obtain induced pluripotent stem cells, wherein the initialization factor contains an OCT family, a SOX family, a KLF family, a MYC family, a LIN28 family and a P53 function inhibitor.
摘要:
There are provided a neurite outgrowth promotion kit containing a γ-secretase inhibitor or a GADD45G expression vector, in which the neurite outgrowth promotion kit is used for significantly promoting neurite outgrowth of nerve cells as compared with a control, by acting on a neurosphere to induce differentiation of the neurosphere into nerve cells; a method for producing a neurosphere for treatment of spinal cord injury, which includes a step of using the above-described neurite outgrowth promotion kit on a neurosphere derived from a pluripotent stem cell; a neurosphere for treatment of spinal cord injury; and a method for selecting a neurosphere for treatment of spinal cord injury and a method for screening a neurite outgrowth-promoting agent.
摘要:
A method of culturing human induced pluripotent stem cells includes a step of inoculating human induced pluripotent stem cells in a culture medium at an inoculation density of 1.0 × 10 4 to 1.0 × 10 6 cells/cm 2 in a culture vessel and subjecting the human induced pluripotent stem cells to two-dimensional culturing. A method of producing cerebral organoids includes a step 1 of culturing a culture of the human induced pluripotent stem cells obtained by the method of culturing human induced pluripotent stem cells in a culture medium containing a BMP inhibitor and a transforming growth factor β (TGFβ) inhibitor to form cell aggregates, a step 2 of culturing the cell aggregates in a culture medium containing a Wnt signal transduction pathway potentiator and an extracellular matrix, and a step 3 of subjecting the culturing obtained in the step 2 to spinner culturing.
摘要:
To produce and/or maintain naive pluripotent stem cells capable of highly expressing genes important for maintaining an undifferentiated state, which could not be achieved by known methods for producing pluripotent stem cells. The present invention can produce naive pluripotent stem cells capable of maintaining an undifferentiated state by introducing and allowing transient expression of six genes (Oct3/4, Klf4, c-Myc, Sox2, Nanog, and Klf2) among the so-called initializing factors, and further performing culturing in a medium containing LIF, an MEK inhibitor, a GSK3 inhibitor, a cAMP production promoter, a TGF-β inhibitor and a PKC inhibitor. Thus, the problem of the present invention can be solved.
摘要:
A compound represented by formula (1), or a pharmaceutically acceptable salt thereof is effective as a therapeutic agent or a prophylactic agent for a corneal disease or sensory nerve damage due to corneal surgery, and as a regeneration accelerator for corneal sensory nerves:
wherein R 1 represents a hydrogen atom or a carboxyl group, R 2 represents a hydrogen atom or a hydroxy group, R 3 represents a hydrogen atom or a carboxyl group, and R 4 represents a hydrogen atom or a hydroxy group.
摘要:
In order to provide a therapeutic agent for nerve injury which contains iPS-derived neural stem cells and has low or no risk of side effects, as well as a method for treating a nerve injury using the iPS cells, by efficiently establishing in vivo the iPS-derived neural stem having low or no risk of tumor formation, neurospheres are formed following formation of embryoid bodies from the iPS cells, and a clone whose ratio of cells in which the promoter of Nanog gene is activated is 0.01% or less is selected, and the clone is administered to a patient suffering from the nerve injury.
摘要:
An object of the present invention is to provide a method for introducing a gene into an embryo for production of a human disease model primate animal using a non-human primate animal such as a marmoset. The present invention relates to a method for introducing a foreign gene into an early embryo of a non-human primate animal, which comprises placing early embryos of a non-human primate in a 0.2 M to 0.3 M sucrose solution, so as to increase the volume of the perivitelline spaces, and then injecting a viral vector containing a human foreign gene operably linked to a promoter into the perivitelline spaces of the early embryos.
摘要:
A method for producing a brain organoid having an aggregated tau protein including a step (a) of culturing pluripotent stem cells in the presence of a SMAD inhibitor to form an embryoid body, a step (b) of embedding the embryoid body in an extracellular matrix and three-dimensionally culturing the embryoid body in the presence of a SMAD inhibitor and a GSK3β inhibitor to form an organoid that includes neural precursor cells, a step (c) of extracting the organoid from the extracellular matrix and suspension-culturing the organoid in the presence of LIF to form a brain organoid, a step (d) of forcing the brain organoid to express a mutant MAPT gene, and a step (e) of further suspension-culturing the brain organoid after step (d) to obtain a brain organoid having an aggregated tau protein.
摘要:
A production method for a cerebral organoid having amyloid plaques is provided, the method including a step (a) of forming, in the presence of a SMAD inhibitor, an embryoid body from a pluripotent stem cell having a mutation in an Alzheimer's disease-related gene; a step (b) of embedding the embryoid body after the step (a) in an extracellular matrix and three-dimensionally culturing the embedded embryoid body in the presence of a SMAD inhibitor and a glycogen synthase kinase 3β (GSK3β) inhibitor to form an organoid; and a step (c) of removing the organoid after the step (b) from the extracellular matrix and subjecting the removed organoid to stirring culture in a medium, where at least a part of the step (c) is carried out in the presence of leukemia inhibitory factor (LIF).
摘要:
Sample preparation system and method which enable electron microscope observation of a sample slice with simple structure and process are provided. The sample preparation system includes at least one of a plasma treatment apparatus and a sputtering apparatus, as well as a slice collecting apparatus. The plasma treatment apparatus is configured to feed a resin tape in a plasma irradiation area to irradiate the resin tape with plasma, thereby continuously hydrophilizing the resin tape. The sputtering apparatus is configured to feed the resin tape in a sputtering area to continuously perform sputtering on the resin tape, thereby imparting conductivity to the resin tape. The slice collecting apparatus is configured to serially collect slices cut out from a sample onto the resin tape having been subjected to plasma treatment or sputtering.