Multidirectional anti-melanoma effect of galactolipids (MGDG-1 and DGDG-1) from Impatiens parviflora DC. and their synergy with doxorubicin. (October 2021)

• Record Type: Journal Article
• Authors: Grabowska, Karolina; Galanty, Agnieszka; Koczurkiewicz-Adamczyk, Paulina; Wróbel-Biedrawa, Dagmara; Żmudzki, Paweł; Załuski, Daniel; Wójcik-Pszczoła, Katarzyna; Paśko, Paweł; Pękala, Elżbieta; Podolak, Irma
• Is Part Of: Toxicology in vitro. Volume 76(2021)
• Publication Date: 2021-10
• Subjects: Monogalactosyl diacylglycerol (MGDG) -- Digalactosyl diacylglycerol (DGDG) -- Anti-melanoma -- Anti-tyrosinase -- Combined therapy -- Impatiens; Toxicity testing -- In vitro -- Periodicals; Toxicology -- Periodicals; 615.9
• DOI: 10.1016/j.tiv.2021.105231
• Languages: English
• ISSNs: 0887-2333

Abstract

Abstract: The anti-melanoma potential of galactolipids: MGDG-1 and DGDG-1, isolated from Impatiens parviflora, and their synergistic effect with anticancer drug – doxorubicin (DOX) was investigated. Both compounds demonstrated time- and dose-dependent cytotoxicity against human melanoma cells of different metastatic potential. MGDG-1 was more effective than DGDG-1, with the highest activity against A375 cell line (IC50 = 15.14 μg/mL). Both compounds acted selectively, were devoid of hepatotoxicity or mutagenicity. Additionally, MGDG-1 proved to be a tyrosinase inhibitor. Co-administration of MGDG-1 and DGDG-1 with DOX revealed a synergistic cytotoxic effect on melanoma cells. The cytotoxicity of all tested MGDG-1/DOX and DGDG-1/DOX cocktails was considerably higher than that of each agent administered alone. MGDG-1/DOX (Mix3) reduced the viability of A375 melanoma cells almost totally and this effect was 2-fold more potent as compared to DOX alone. Our study indicates that the overall effect is enhanced with the increasing concentration of MGDG-1 in the cocktail. These results open up a possibility for lowering therapeutic doses of chemotherapeutics such as doxorubicin when co-administrated with galactolipids. Thus, MGDG-1 can be prospectively considered as multidirectional anti-melanoma agent and can be recommended for further in vitro and in vivo studies, especially in search for effective combined therapy. Graphical abstract: Unlabelled Image Highlights: A monogalactosyl diacylglycerol (MGDG-1) shows good activity against A375 cancer cell line. Galactolipid+Doxorubicin cocktails have synergistic cytotoxic activity on melanoma cells. The increasing concentration of MGDG-1 in the cocktail enhances the anti-melanoma effect. Galactolipids (MGDG-1, DGDG-1) do not exert hepatotoxicity or mutagenicity. MGDG-1 inhibits tyrosinase.