Abstract: The object of the present invention is to provide a material for efficiently obtaining differentiated cells from pluripotent stem cells. That is, the present invention relates to a pluripotent stem cell differentiation-promoting agent containing, as an active ingredient, a ?-nicotinamide mononucleotide or a pharmacologically acceptable salt thereof, and a solvate thereof, and a method for differentiating pluripotent stem cells, including culturing pluripotent stern cells in a culture medium containing a ?-nicotinamide mononucleotide or a pharmacologically acceptable salt thereof, and a solvate thereof.

Abstract: A medium for stem cells according to the present invention contains at least one of carboxymethyl cellulose and polyvinylpyrrolidone as a water-soluble polymer. The content of carboxymethyl cellulose in the medium is preferably such that the final concentration thereof is 0.001 ?g/mL to 1 mg/mL. The content of polyvinylpyrrolidone in the medium is preferably such that the final concentration thereof is 0.05 ?g/mL to 2 mg/mL.

Abstract: The present invention provides a chromosome-stabilizing agent for stem cells containing a ?-nicotinamide mononucleotide or a pharmaceutically acceptable salt thereof, or a solvate thereof, as an active ingredient. The present invention also provides a culture method for stem cells, including culturing stem cells in a culture medium containing a ?-nicotinamide mononucleotide or a pharmaceutically acceptable salt thereof, or a solvate thereof.

Abstract: The object of the present invention is to provide a material for efficiently obtaining differentiated cells from pluripotent stem cells. That is, the present invention relates to a pluripotent stem cell differentiation-promoting agent containing, as an active ingredient, a ?-nicotinamide mononucleotide or a pharmacologically acceptable salt thereof, and a solvate thereof, and a method for differentiating pluripotent stem cells, including culturing pluripotent stern cells in a culture medium containing a ?-nicotinamide mononucleotide or a pharmacologically acceptable salt thereof, and a solvate thereof.

Abstract: The present invention is directed to providing a method for culturing cells in a system containing laminin-5. The method of the present invention is characterized by a culture system containing a polypeptide selected from a group consisting of: a protein in blood other than extracellular matrix proteins, which is, serum, serum albumin, prealbumin, immunoglobulin, ?-globulin, ?-globulin, ?1-antitrypsin (?1-AT), heptoglobin (Hp), ?2-macroglobulin (?2-M), ?-fetoprotein (AFP), transferrin, retinol-binding protein (RBP) or adiponectin; gelatin; a protein belonging to a tumor necrosis factor (TNF) family; and peptone.

Abstract: The present invention provides a method for producing an osteopenia animal model by RANKL administration and an osteopenia animal model. Also, a method for producing an osteopenia animal model, comprising administering soluble RANKL or a fused protein of soluble RANKL with an epitope tag to a non-human animal so as to promote vivo osteoclast differentiation and activation in the non-human animal, and an osteopenia animal model produced by the method are provided.

Abstract: The present invention provides a reagent containing a fused protein of RANKL with an epitope tag that has improved effects of differentiating and activating osteoclasts and improved preservation stability compared with the case of using RANKL alone, and an agent for differentiating and activating osteoclasts that can be used in vitro or in vivo, containing, as an active ingredient, a fused protein of soluble RANKL with an epitope tag peptide.

Abstract: The present invention provides a method for producing an osteopenia animal model by RANKL administration and an osteopenia animal model. Also, a method for producing an osteopenia animal model, comprising administering soluble RANKL or a fused protein of soluble RANKL with an epitope tag to a non-human animal so as to promote vivo osteoclast differentiation and activation in the non-human animal, and an osteopenia animal model produced by the method are provided.