Description |
Mulberroside A, the major active anti-tyrosinase compound in the root bark extract of Morus alba L. (Moraceae), is widely employed as an active ingredient in whitening cosmetics. IC50 value: 1.29 μmol/L (inhibition of the monophenolase activity); KI value: 0.385 μmol/L (the inhibition constant of the effectors on tyrosinase); KIS value: 0.177 μmol/L (the inhibition constant of the enzyme-substrate complex) [3] Target:In vitro: Mulberroside A decreased the expressions of tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, and IL-6 and inhibited the activation of NALP3, caspase-1, and nuclear factor-κB and the phosphorylation of extracellular signal-regulated protein kinases, the c-Jun N-terminal kinase, and p38 exhibiting anti-inflammatory antiapoptotic effects [1]. Mulberroside A treatment significantly decreased the mRNA and protein expression of P-gp in Caco-2 cells after treatment with Mulberroside A (5–20 μM). PKC and NF-κB might play crucial roles in Mulberroside A-induced suppression of P-gp [2]. In vivo:
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