ClTI, a Kunitz TRYPSIN INHIBITOR (cas 12786-39-9) purified from Cassia leiandra Benth. seeds, exerts a candidicidal effect on Candida albicans by inducing oxidative stress and necrosis

Add time:09/02/2019    Source:sciencedirect.com

Cassia leiandra is an Amazonian plant species that is used popularly for the treatment of mycoses. Recently, a protease inhibitor, named ClTI, with insecticidal activity against Aedes aegypti, was purified from the mature seeds of C. leiandra. In this work, we show that ClTI has antifungal activity against Candida species and describe its mode of action towards Candida albicans. This study is relevant because the nosocomial infections caused by Candida species are a global public health problem that, together with the growing resistance to current drugs, has increased the urgency of the search for new antifungal compounds. ClTI inhibited the growth of Candida albicans, Candida tropicalis, Candida parapsilosis, and Candida krusei. However, ClTI was more potent against C. albicans. The candidicidal mode of action of ClTI on C. albicans involves enhanced cell permeabilization, alteration of the plasma membrane proton-pumping ATPase function (H+ -ATPase), induction of oxidative stress, and DNA damage. ClTI also exhibited antibiofilm activity and non-cytotoxicity to mammalian cells. These results indicate that ClTI is a promising candidate for the future development of a new, natural, and safe agent for the treatment of infections caused by C. albicans.

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