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Purpose: Chrysanthemum indicum Linne (CI) has been used as a traditional medicine. Although several biological effects of CI have been reported, the precise role and function of CI as nutri-cosmetic and cosmetic materials remain unclear. Therefore, we prepared water extract of Chrysanthemum indicum Linne (CIW). And nutri-cosmetic potential was discussed through evaluation of anti-oxidant, anti- adipogenic in 3T3-L1 cells and regulatory function of skin fibril- related genes in human skin fibroblast (HSF). Methods: The anti- oxidant activity of CIW was evaluated through metal chelating activity and reduction potential. The cytotoxicity of CIW in 3T3-L1 and HSF was evaluated by MTT assay. The anti-adipogenic effect of CIW was examined by Oil Red O (ORO) staining and microscopy observation in 3T3-L1 cells. The mRNA expression levels of skin fibril-related genes in HSF were analyzed by reverse transcription-polymer chain reaction (RT-PCR). Results: The anti-oxidant activity of CIW was increased in a dose dependent manner. The CIW treatment up to 100 µg/mL for 24 h did not affect to the viability of 3T3-L1 cells and HSF. Thus, up to 100 µg/mL of CIW was chosen in cell-based assay. The treatment of 10, 50, and 100 µg/mL CIW significantly inhibited 3T3- L1 adipogenesis by 5.17%, 72.80%, and 104.09%. In addition, up- regulated mRNA expression levels of skin fibril-related genes such as fibronectin and type Ⅰ collagen α2 (COL1A2) were observed in CIW- treated HSF. Conclusion: These results suggest that CIW has the potential as nutri-cosmetic and cosmetic ingredient which possess anti-oxidant and anti-adipogenic effects.

Two-component systems (TCSs) are an important signaling transduction pathway that adapt to changing environments. Commonly, a TCS comprises a sensor kinase that is usually an integral membrane histidine sensor kinase and a response regulator that mediates the cellular responses. Presently, however, we cloned a novel sensor kinase gene (tcsK) that is not adjacent to its cognate response regulator from Streptomyces acidiscabies that produces two secondary metabolites, thaxtomin A and WS5995B, and identified its functional involvement in the production of secondary metabolites and morphological differentiation. The elevated expression and disruption of the tcsK gene enhanced 7.1-fold and almost abolished WS5995B production in S. acidiscabies, respectively, but did not affect the production of thaxtomin A. In addition, spore formation of S. acidiscabies was decreased 120-fold by the disruption of tcsK, and the actinorhodin production of Streptomyces lividans TK24 was increased 5.7-fold by the high expression of tcsK. These results indicate that the novel unpaired tcsK gene may be related to the control of secondary metabolite production and spore formation in actinomycetes.