Abstract: This method, which screens drugs that activate the skin, is characterized by causing candidate drugs to act on vascular endothelial cells, and selecting drugs that enhance the expression of PDGF-BB by the cells as a skin activation agent.

Abstract: An agent comprising one or more components selected from among cowberry derivatives, mangosteen derivatives, scutellaria root derivatives, inositol and inositol phosphate, as an active ingredient, is a novel agent that can effectively promote production of platelet-derived growth factor-BB (PDGF-BB), which contributes to production of mesenchymal stem cells and stabilization of stem cells.

Abstract: An object of the present invention is to promote hair growth or hair regeneration by promoting formation and/or regeneration of hair follicles. A method is provided for promoting formation and/or regeneration of hair follicles, comprising maintaining or increasing expression of one or a plurality of genes involved in cell adhesion in dermal papilla cells.

Abstract: Disclosed is a cell transformed by a vector containing human Wnt3a gene, wherein the cell is selected from a group consisting of hair follicle-derived cells and prostate cancer-derived cells.

Abstract: The invention provides a method of isolating dermal stem cells, having the steps of subjecting cells separated from the skin by enzyme treatment to suspension culture, and isolating cells positive for stem cell markers from the cultured cells.

Abstract: An object of the present invention is to promote hair growth or hair regeneration by promoting formation and/or regeneration of hair follicles. A method is provided for promoting formation and/or regeneration of hair follicles, comprising maintaining or increasing expression of one or a plurality of genes involved in cell adhesion in dermal papilla cells.

Abstract: Disclosed is a cell transformed by a vector containing human Wnt3a gene, wherein the cell is selected from a group consisting of hair follicle-derived cells and prostate cancer-derived cells.

Abstract: The present invention provides a method for preparing a hair dermal papilla cell preparation comprising preparing a cell suspension by removing epidermal tissue from skin tissue and subjecting the resulting dermal tissue fraction to collagenase treatment, and cyropreserving the cell suspension to kill the follicular epidermal cells. The present invention also provides a composition for regenerating hair follicles comprising hair dermal papilla cell and epidermal cells, wherein the ratio of the number of hair dermal papilla cell to the number of epidermal cells is from 1:10 to 10:1.

Abstract: The present invention provides a method for preparing a hair dermal papilla cell preparation comprising preparing a cell suspension by removing epidermal tissue from skin tissue and subjecting the resulting dermal tissue fraction to collagenase treatment, and cyropreserving the cell suspension to kill the follicular epidermal cells. The present invention also provides a composition for regenerating hair follicles comprising hair dermal papilla cell and epidermal cells, wherein the ratio of the number of hair dermal papilla cell to the number of epidermal cells is from 1:10 to 10:1.

Abstract: The present invention provides a method of producing a cell mass capable of serving as a primitive organ-like structure comprised of a plurality of somatic cell types of somatic origin, comprising: preparing cultures containing the plurality of types of somatic cells; mixing the plurality of types of somatic cell cultures followed by adding a Wnt signal activator to the mixed cell culture; subjecting the culture containing the Wnt signal activator to non-plate contact culturing over a predetermined time period; and replacing the medium of the culture cultured by the non-plate contact culturing with medium not containing Wnt signal activator and further culturing for a predetermined time period; wherein, at least one type of the plurality of somatic cells is maintained in an undifferentiated state.

Abstract: A hair resiliency and body improver comprising as the active ingredient thereof one or more types of compounds selected from the group consisting of 2-aminothiazole derivatives represented by the following general formula (1) or 3-aminoisoxazole derivatives represented by the following general formula (2), and pharmaceutically acceptable salts thereof: (wherein, R1, R2, R3, R4, n and m are as defined in the description).

Abstract: It is intended to provide a method of regenerating follicles which comprises inhibiting the expression of one or more genes capable of inhibiting follicle formation that are selected from the group consisting of S100a6, Ctgf, Gsto1, Gas6, Klf2, Thbs1 and Thbd, or promoting the expression of one or more genes capable of inducing follicle formation that are selected from the group consisting of Tgfbi, Gas1, Thbs2, Ifi202A, Bmp7, Efna1, Efna3, Cidea, Serping1, MS1, Irf6, Fmod and Fxyd4.

Abstract: There is provided a hair tonic comprising at least two of an inhibitor against 5? reductase type 2, an inhibitor against transforming growth factor ?2, and an inhibitor against caspase-3; a method comprising screening for at least two of inhibition against 5? reductase type 2, inhibition against transforming growth factor ?2, and inhibition against caspase-3, or comprising screening for inhibition against caspase-3 and then for apoptosis inhibition, and a hair loss inhibitor having the effect of inhibiting caspase-3, and a hair loss inhibitor having the effect of inhibiting caspase-3 and of inhibiting apoptosis.

Abstract: The present invention provides a method for preparing a hair dermal papilla cell preparation comprising preparing a cell suspension by removing epidermal tissue from skin tissue and subjecting the resulting dermal tissue fraction to collagenase treatment, and cyropreserving the cell suspension to kill the follicular epidermal cells. The present invention also provides a composition for regenerating hair follicles comprising hair dermal papilla cell and epidermal cells, wherein the ratio of the number of hair dermal papilla cell to the number of epidermal cells is from 1:10 to 10:1.

Abstract: There is provided a hair tonic comprising at least two of an inhibitor against 5? reductase type 2, an inhibitor against transforming growth factor ?2, and an inhibitor against caspase-3; a method comprising screening for at least two of inhibition against 5? reductase type 2, inhibition against transforming growth factor ?2, and inhibition against caspase-3, or comprising screening for inhibition against caspase-3 and then for apoptosis inhibition, and a hair loss inhibitor having the effect of inhibiting caspase-3, and a hair loss inhibitor having the effect of inhibiting caspase-3 and of inhibiting apoptosis.

Abstract: There is provided a hair tonic comprising at least two of an inhibitor against 5&agr; reductase type 2, an inhibitor against transforming growth factor &bgr;2, and an inhibitor against caspase-3; a method comprising screening for at least two of inhibition against 5&agr; reductase type 2, inhibition against transforming growth factor &bgr;2, and inhibition against caspase-3, or comprising screening for inhibition against caspase-3 and then for apoptosis inhibition, and a hair loss inhibitor having the effect of inhibiting caspase-3, and a hair loss inhibitor having the effect of inhibiting caspase-3 and of inhibiting apoptosis.