摘要:
An object of the present invention is to produce a mammalian organ having a complicated cellular composition composed of multiple kinds of cells, such as kidney, pancreas, thymus and hair, in the living body of a non-human animal. The inventors of the present invention applied the chimeric animal assay described above, to a novel solid organ production method. More specifically, the inventors has shown that a model mouse which is deficient of kidney, pancreas, thymus or hair due to the dysfunction of the metanephric mesenchyme that is differentiated into most of an adult kidney, is rescued by blastocyst complementation by the chimeric animal assay, and whereby a kidney, a pancreas, thymus or hair can be newly produced.
摘要:
A heterologous chimeric animal can be produced by a method comprising the steps of: (A) injecting a stem cell into a blastocyst cavity in a blastocyst stage of an animal heterologous to that of the stem cell, or mixing the stem cell with a divided fertilized egg of the animal heterologous to that of the stem cell; and (B) growing a cell mass including the stem cell prepared in the step (A) into a chimeric animal between a species of the stem cell and a species of the heterologous animal.
摘要:
It is revealed that an organ such as pancreas can be regenerated by utilizing a fact that the deficiency of an organ is complemented by injecting an induced pluripotent stem cell (iPS cell) into a developed blastocyst in a blastocyst complementation method. Thus, the present invention has solved the above-described object. This provides a method for producing a target organ, using an iPS cell, in a living body of a non-human mammal having an abnormality associated with a lack of development of the target organ in a development stage, the target organ produced being derived from a different individual mammal that is an individual different from the non-human mammal.
摘要:
An object of the present invention is to provide a method which constantly enables organ regeneration for the purpose of achieving organ regeneration with higher efficiency. It has been discovered that, in a blastocyst complementation method, a next generation is born when a deficiency in an organ, such as pancreas and kidney, is complemented by injection of ES cells into a generated blastocyst, and further discovered that a transgenic animal having a pancreas or a kidney thus complemented can transmit the phenotype to the next generation as a founder. This discovery has revealed that organ regeneration can be accomplished by using such a founder. Thus, the present invention achieved the above-described object.
摘要:
A method and substance for regulating expansion of a stem cell, such as a hematopoietic stem cell, is provided. Therefore, a method is provided for regulating expansion of a stem cell, such as a hematopoietic stem cell, a germ line stem cell, or a neural stem cell, comprising the steps of (A) providing, to the stem cell, Bmi-1 or a variant or fragment thereof and/or a Bmi-1 regulating agent in an amount sufficient for regulation of the expansion of the stem cell and (B) culturing the stem cell for a time sufficient for the regulation of expansion.
摘要:
The present invention provides clonal pluripotent hepatic stem cells using flow cytometry and in vitro single-cell-based assays. These cells possess multilineage differentiation potential and self-renewing capability. These cells may be clonally propagated in culture, to continuously produce hepatocytes and cholangiocytes as descendants while maintaining primitive stem cells. When expanded cells are transplanted into recipient animals, they morphologically and functionally differentiated into hepatocytes and cholangiocytes, with reconstitution of hepatocyte and bile duct structures. Furthermore, these cells differentiated into pancreatic ductal and acinar cells or intestinal epithelial cells when transplanted into pancreas or duodenal wall. Thus, the self-renewing multipotent stem cells persist in the developing mouse liver and can be induced to become cells of other organs of endodermal origin under appropriate microenvironment, providing new insight into therapies for diseases of the digestive system.
摘要:
The present invention has an object of providing a method for producing specific cells by amplifying cells in a desired differentiation stage. The present invention provides a method for producing specific cells by inducing differentiation of cells, wherein an oncogene is forcibly expressed in cells in a desired differentiation stage to amplify the cells in the desired differentiation stage. The present invention also provides a method for producing specific cells, wherein oncogene-induced senescence (OIS) which is induced by the oncogene expressed in the cells in the desired differentiation stage is suppressed.
摘要:
A composition for maintaining a function of platelets, the composition comprising, as an active ingredient, a compound represented by the following general formula (I) or a salt thereof, or a solvate thereof: wherein X represents a phenylene group; Y represents any one of a hydrogen atom and —(CH2)mR1; wherein m represents an integer of any one of 0 to 4; and R1 is any one of —NR5COR2, —NR5SO2R2, and —NR3R4; wherein R2 represents any one of a C1 to C6 alkyl group, an aryl group, a C1 to C6 alkoxy group, and the like; R3 and R4 represent a C1 to C6 alkyl group or the like; and R5 represents any one of a hydrogen atom, a C1 to C6 alkyl group, and the like; and Z represents any one of a hydrogen atom and a C1 to C6 alkyl group.
摘要翻译:用于维持血小板功能的组合物,所述组合物包含作为活性成分的由以下通式(I)表示的化合物或其盐或其溶剂合物:其中X表示亚苯基; Y表示氢原子和 - (CH 2)m R 1中的任一个; 其中m表示0至4中任一个的整数; 并且R 1是-NR 5 COR 2,-NR 5 SO 2 R 2和-NR 3 R 4中的任一个; 其中R2表示C1至C6烷基,芳基,C1至C6烷氧基等中的任一个; R3和R4表示C1〜C6烷基等; R5表示氢原子,C1〜C6烷基等中的任意一种, Z表示氢原子和C1〜C6烷基中的任一个。
摘要:
An object of the present invention is to provide a method of promoting polyploidization of megakaryocytes and thereby producing highly polyploidized megakaryocytes, a method of efficiently producing platelets from polyploidized megakaryocytes, and the like. The present invention provides a method of producing polyploidized megakaryocytes comprising a step of forcing expression of an apoptosis suppressor gene in megakaryocytes before polyploidization and culturing the resulting cells.
摘要:
The present invention has an object of providing a method for producing specific cells by amplifying cells in a desired differentiation stage. The present invention provides a method for producing specific cells by inducing differentiation of cells, wherein an oncogene is forcibly expressed in cells in a desired differentiation stage to amplify the cells in the desired differentiation stage. The present invention also provides a method for producing specific cells, wherein oncogene-induced senescence (OIS) which is induced by the oncogene expressed in the cells in the desired differentiation stage is suppressed.