Synergistic Inhibition of Angiogenesis by Artesunate and CaptoprilIn VitroandIn Vivo

Author:

Krusche Benjamin1,Arend Joachim1,Efferth Thomas1

Affiliation:

1. Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany

Abstract

Inhibition of angiogenesis represents one major strategy of cancer chemotherapy. In the present investigation, we investigated the synergism of artesunate and captopril to inhibit angiogenesis. Artesunate is an antimalarial derivative of artemisinin from the Chinese medicinal plant,Artemisia annuaL., which also reveals profound anticancer activityin vitroandin vivo. Captopril is an angiotensin I-converting (ACE) inhibitor, which is well established in Western academic medicine. Both compounds inhibited migration of human umbilical vein endothelial cells (HUVECs)in vitro. The combination of both drugs resulted in synergistically inhibited migration. Whereas artesunate inhibited HUVEC growth in the XTT assay, captopril did not, indicating independent modes of action. We established a chorioallantoic membrane (CAM) assay of quail embryos (Coturnix coturnixL.) and a computer-based evaluation routine for quantitative studies on vascularization processesin vivo. Artesunate and captopril inhibited blood vessel formation and growth. For the first time, we demonstrated that both drugs revealed synergistic effects when combined. These results may also have clinical impact, since cardiovascular diseases and cancer frequently occur together in older cancer patients. Therefore, comorbid patients may take advantage, if they take captopril to treat cardiovascular symptoms and artesunate to treat cancer.

Publisher

Hindawi Limited

Subject

Complementary and alternative medicine

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