Bioorganic and Medicinal Chemistry p. 3756 - 3767 (2017)
Update date:2022-08-16
Topics:
Magoulas, George E.
Tsigkou, Tzoanna
Skondra, Lina
Lamprou, Margarita
Tsoukala, Panagiota
Kokkinogouli, Vassiliki
Pantazaka, Evangelia
Papaioannou, Dionissios
Athanassopoulos, Constantinos M.
Papadimitriou, Evangelia
The natural product artemisinin and derivatives thereof are currently considered as the drugs of choice for the treatment of malaria. At the same time, a significant number of such drugs have also shown interesting anticancer activity. In the context of the present research work, artemisinin was structurally modified and anchored to naturally occurring polyamines to afford new artemisinin dimeric conjugates whose potential anticancer activity was evaluated. All artemisinin conjugates tested were more effective than artemisinin itself in decreasing the number of MCF7 breast cancer cells. The effect required conjugation and was not due to the artemisinin analogue or the polyamine, alone or in combination. To elucidate potential mechanism of action, we used the most effective conjugates 6, 7, 9 and 12 and found that they decreased expression and secretion of the angiogenic growth factor pleiotrophin by the cancer cells themselves, and inhibited angiogenesis in vivo and endothelial cell growth in vitro. These data suggest that the new artemisinin dimers are good candidates for the development of effective anticancer agents.
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