alexa Artemisinins: pharmacological actions beyond anti-malarial.
Oncology

Oncology

Chemotherapy: Open Access

Author(s): Ho WE, Peh HY, Chan TK, Wong WS

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Abstract Artemisinins are a family of sesquiterpene trioxane lactone anti-malarial agents originally derived from Artemisia annua L. The anti-malarial action of artemisinins involves the formation of free radicals via cleavage of the endoperoxide bond in its structure, which mediate eradication of the Plasmodium species. With its established safety record in millions of malarial patients, artemisinins are also being investigated in diseases like infections, cancers and inflammation. Artemisinins have been reported to possess robust inhibitory effects against viruses (e.g. Human cytomegalovirus), protozoa (e.g. Toxoplasma gondii), helminths (e.g. Schistosoma species and Fasciola hepatica) and fungi (e.g. Cryptococcus neoformans). Artemisinins have demonstrated cytotoxic effects against a variety of cancer cells by inducing cell cycle arrest, promoting apoptosis, preventing angiogenesis, and abrogating cancer invasion and metastasis. Artemisinins have been evaluated in animal models of autoimmune diseases, allergic disorders and septic inflammation. The anti-inflammatory effects of artemisinins have been attributed to the inhibition of Toll-like receptors, Syk tyrosine kinase, phospholipase Cγ, PI3K/Akt, MAPK, STAT-1/3/5, NF-κB, Sp1 and Nrf2/ARE signaling pathways. This review provides a comprehensive update on non-malarial use of artemisinins, modes of action of artemisinins in different disease conditions, and drug development of artemisinins beyond anti-malarial. With the concerted efforts in the novel synthesis of artemisinin analogs and clinical pharmacology of artemisinins, it is likely that artemisinin drugs will become a major armamentarium combating a variety of human diseases beyond malaria. Copyright © 2013 Elsevier Inc. All rights reserved. This article was published in Pharmacol Ther and referenced in Chemotherapy: Open Access

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