Abstract:
PURPOSE: A composition containing an oligonucleotide or mimic acting as an inhibitor of miRNA-526b is provided to control collagen generation and to prevent or treat aging. CONSTITUTION: A composition for controlling collagen contains 15-23 serial nucleotides of sequence number 1. The collagen is controlled by regulating the expression of matrix metalloproteinase 1(MMP1). The oligonucleotide reduces or suppresses the expression of MMP1 by hybridization with MMP1 mRNA. The composition is used for anti-aging.
Abstract:
PURPOSE: A method for screening a material which relieves skin irritation by environmental harmful factor is provided to manufacture an external use formulation and to detoxify. CONSTITUTION: A method for screening a material which relieves skin irritation by environmental harmful factor comprises: a step of treating candidates which regulates intracellular factor in vitro; a step of treating the environmental harmful factor to test cells to induce overexpression of the factor; and a step of measuring expression level. The test cells are keratinocytes. The environmental harmful factor is pollen or yellow sand. The overexpressed factor is interleukin 6 or 8, GSTT1, NQ01, or hBD3. The screened material is Melia azedarach L. var. japonica Makino or Tussilago farfara L. extract.
Abstract:
PURPOSE: A cosmetic composition containing polysaccharides for adsorbing heavy metal and micro dust is provided to reduce skin inflammation caused by heavy metal and micro dust, and to prevent skin trouble. CONSTITUTION: A cosmetic composition for adsorbing heavy metal and micro dust contains 0.01-20.0 weight% of Schizopyllum commune, seaweed, and ginseng polysaccharides as active ingredient. The Schizopyllum commune polysaccharide is beta-1,3-glucan. The seaweed polysaccharide is Laminaria digitata polysaccharide. A method for producing the polysaccharides comprises: a step of culturing mycelium of Schizopyllum commune, seaweed, or ginseng; a step of extracting with water to obtain water soluble fraction; a step of freeze-drying and extracting with methanol to obtain methanol insoluble fraction; a step of extracting with ethanol to obtain ethanol insoluble fraction; and a step of eluting by column chromatography.
Abstract:
PURPOSE: A method for screening a material which regulates skin pigmentation is provided to screen a material for regulating skin pigmentation, and to effectively treat hyperpigmentation or hypopigmentation by regulating intracellular and intercellular signal transduction faction and transcription factor. CONSTITUTION: A method for screening a material which regulates skin pigmentation comprises: a step of treating one or more gene selected from the group consisting of IFN gamma, IL4, IL17, IL6, STAT3, STAT6, JAK1, JAK2, and JAK3 with a candidate material; and a step of selecting a candidate material which enhances or reduces gene expression as a material which regulates skin pigmentation. A candidate material which enhances gene expression is selected as a useful material which possibly suppresses pigmentation. A candidate material which reduces gene expression is selected as a useful material which possibly enhances skin pigmentation. [Reference numerals] (AA) Comparative example; (BB) Example 1; (CC) Example 2; (DD) Example 3