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Organosulfides – Allyl isothiocyanate (AITC) and cancers

Wednesday, February 13, 2013 12:11

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Home of Kyle J. Norton for The Better of Living & Living Health Sulfur represents approximately 1/4% of our total body weight and occurs principally in the body as a constituent of the cysteine and methionine. It plays an important role in protein synthesis and enzyme reaction functions and is found abundantly in broccoli, cauliflower, cabbage, kale, kohlrabi, etc.
Organosulfides
Organosulfur compounds presented in natural food are generally considered as beneficial for health because of their antioxidant and anticarcinogenic properties. This has led to their excessive and long-term consumption. However, there is also evidence that these compounds demonstrate toxicity and adverse health effects suggesting their potential dual biological roles. Thus, they can act as double-edged biological swords(a).
Allyl isothiocyanate (AITC) is organosulfur compounds found abundantly in cruciferous vegetables and responsible for the pungent taste of mustard, horseradish, wasabi, etc .
Allyl isothiocyanate (AITC) and cancersAllyl isothiocyanate (AITC)occurs in many commonly consumed cruciferous vegetables and exhibits significant anti-cancer activities. According to the study by the California Institute of Technology, AITC induced mitochondrion-mediated apoptosis, as shown by cytochrome c release from mitochondria to cytoplasm, activation of caspase-9 and caspase-3, and formation of TUNEL-positive cells. Inhibition of caspase-9 blocked AITC-induced apoptosis. Moreover, we found that apoptosis induction by AITC depended entirely on mitotic arrest and was mediated via Bcl-2 phosphorylation at Ser-70. Pre-arresting cells in G(1) phase by hydroxyurea abrogated both AITC-induced mitotic arrest and Bcl-2 phosphorylation. Overexpression of a Bcl-2 mutant prevented AITC from inducing apoptosis. We further showed that AITC-induced Bcl-2 phosphorylation was caused by c-Jun N-terminal kinase (JNK), and AITC activates JNK(13).

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