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      저자 : Geun-Seog Ryu (검색결과 2 건)
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      • KCI등재

        Synthesis and Evaluation of Coumaroyl Dipeptide Amide as Potential Whitening Agents

        이혜숙,신경훈,Geun-Seog Ryu,조인식,김재일,Jae-Ho Lee,김한영 대한화학회 2013 Bulletin of the Korean Chemical Society Vol.34 No.10

        Coumaroyl dipeptide amide, Coumaric acid-LG-NH2, was prepared successfully using the solid-phase method, and its efficacy as a skin whitening agent was studied. Coumaric acid-LG-NH2 was prepared with Rink-amide resin, and 96.354% of purity was obtained. Using MTT assay and LDH release assay, we found that it exhibited very low cytotoxicity. And, we found that Coumaric acid-LG-NH2 inhibited tyrosinase activity dose-dependently and showed superior tyrosinase inhibitory activity to well-known whitening agent, arbutin. IC50 value of Coumaric acid-LG-NH2 was 182.4 μM, and IC50 value of arbutin was 384.6 μM. Also, in measurement of melanin contents using B16F1 melanoma cell lines, Coumaric acid-LG-NH2 reduced melanin production induced by α-MSH statistically significant, and showed superior melanin inhibitory activity to p-coumaric acid or arbutin. In addition, Coumaric acid-LG-NH2 reduced MC1R mRNA expression level. Thus, we concluded that MC1R pathway is the significant pathway of Coumaric acid-LG-NH2, and Coumaric acid-LG-NH2 has great potential to be used as novel whitening agents.

      • SCOPUSKCI등재

        Synthesis and Evaluation of Coumaroyl Dipeptide Amide as Potential Whitening Agents

        Lee, Hye-Suk,Shin, Kyong-Hoon,Ryu, Geun-Seog,Cho, In-Shik,Kim, Jae-Il,Lee, Jae-Ho,Kim, Han-Young Korean Chemical Society 2013 Bulletin of the Korean Chemical Society Vol.34 No.10

        Coumaroyl dipeptide amide, Coumaric acid-LG-$NH_2$, was prepared successfully using the solid-phase method, and its efficacy as a skin whitening agent was studied. Coumaric acid-LG-$NH_2$ was prepared with Rink-amide resin, and 96.354% of purity was obtained. Using MTT assay and LDH release assay, we found that it exhibited very low cytotoxicity. And, we found that Coumaric acid-LG-$NH_2$ inhibited tyrosinase activity dose-dependently and showed superior tyrosinase inhibitory activity to well-known whitening agent, arbutin. $IC_{50}$ value of Coumaric acid-LG-$NH_2$ was 182.4 ${\mu}M$, and $IC_{50}$ value of arbutin was 384.6 ${\mu}M$. Also, in measurement of melanin contents using B16F1 melanoma cell lines, Coumaric acid-LG-$NH_2$ reduced melanin production induced by ${\alpha}$-MSH statistically significant, and showed superior melanin inhibitory activity to p-coumaric acid or arbutin. In addition, Coumaric acid-LG-$NH_2$ reduced MC1R mRNA expression level. Thus, we concluded that MC1R pathway is the significant pathway of Coumaric acid-LG-$NH_2$, and Coumaric acid-LG-$NH_2$ has great potential to be used as novel whitening agents.

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