Melanogenesis is a process to synthesize melanin, which is a primary responsibility for the pigmentation of human skin, eye and hair. In order to study the effect of polyoxometalates on tyrosinase activity and melanin content in mouse melanocytes, four polyoxometalates with Dawson structure were synthesized. Intracellular and docking studies have shown that the two transition metal phosphomolybdic acids (H₈[P₂Mo₁₇Fe(OH₂)₆₁] and H₈[P₂Mo₁₇Ni(OH₂)₆₁]) are highly effective melanogenesis inhibitors with 22.4 % and 24.1 % inhibitory activities at a concentration of 200 μM. Among the four POMs synthesized, the three phosphomolybdic acids showed extremely significant inhibitory effects on the tyrosinase activity in B16 cells (p<0.0001), and the inhibitory activities were 77.5 %, 79.3 % and 44.4 % at a concentration of 200 Μm, respectively. MTT reduction experiments show that the three polyacids (H₆[P₂Mo₁₈O₆₂], H₈[P₂Mo₁₇Co(OH₂)₆₁] and H₈[P₂Mo₁₇Ni(OH₂)₆₁]) have basically no effect on the viability of B16 cells. Molecular dynamics simulation studies also show that H₈[P₂Mo₁₇Ni(OH₂)₆₁] forms a stable complex with tyrosinase, with a docking fraction of −51.54 kcal/mol. Based on intracellular and docking studies, we believe that H₈[P₂Mo₁₇Ni(OH₂)₆₁] is a promising candidate for safe cosmetic development.

中文翻译：

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多金属氧酸盐作为黑素生成抑制剂中潜在的下一代金属药物

黑色素生成是合成黑色素的过程，黑色素是人类皮肤、眼睛和头发色素沉着的主要责任。为了研究多金属氧酸盐对小鼠黑色素细胞酪氨酸酶活性和黑色素含量的影响，合成了四种具有道森结构的多金属氧酸盐。细胞内和对接研究表明，两种过渡金属磷钼酸（H ₈ [P ₂ Mo ₁₇ Fe(OH ₂ ) ₆₁ ] 和 H ₈ [P ₂ Mo ₁₇ Ni(OH ₂ ) ₆₁]) 是高效的黑色素生成抑制剂，在 200 μM 浓度下具有 22.4 % 和 24.1 % 的抑制活性。在合成的四种 POM 中，三种磷钼酸对 B16 细胞中酪氨酸酶活性的抑制作用极为显着（p<0.0001），在 200 μm 浓度下抑制活性分别为 77.5%、79.3% 和 44.4%。MTT还原实验表明，三种多元酸（H ₆ [P ₂ Mo ₁₈ O ₆₂ ]、H ₈ [P ₂ Mo ₁₇ Co(OH ₂ ) ₆₁ ]和H ₈ [P ₂ Mo ₁₇ Ni(OH ₂ )₆₁ ])对B16细胞的活力基本上没有影响。分子动力学模拟研究还表明，H ₈ [P ₂ Mo ₁₇ Ni(OH ₂ ) ₆₁ ]与酪氨酸酶形成稳定的复合物，对接分数为-51.54 kcal/mol。基于细胞内和对接研究，我们认为 H ₈ [P ₂ Mo ₁₇ Ni(OH ₂ ) ₆₁ ] 是安全化妆品开发的有希望的候选者。