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  • Title: Benzyl isothiocyanate: double trouble for breast cancer cells.
    Author: Rao CV.
    Journal: Cancer Prev Res (Phila); 2013 Aug; 6(8):760-3. PubMed ID: 23842793.
    Abstract:
    An inverse association between dietary intake of cruciferous vegetables and cancer risk has been established for different types of malignancies, including breast cancer. The anticarcinogenic effect of cruciferous vegetables has been attributed to chemicals with an isothiocyanate (ITC) functional moiety. Research over the past three decades has provided extensive preclinical evidence for the efficacy of various ITCs against cancer in preclinical models. Benzyl isothiocyanate (BITC) is one such compound with the ability to inhibit chemically induced cancer, oncogenic-driven tumor formation, and human tumor xenografts in rodent cancer models. Prior work also has established that BITC has the ability to influence carcinogen metabolism and signaling pathways relevant to tumor progression and invasion. In this issue, Kim and colleagues show that BITC inhibits breast cancer stem cell growth, both in vitro and in vivo, in association with suppression of the full-length receptor tyrosine kinase RON as well as its activated truncated form (sfRon), both of which seem to drive stemness in breast cancer cells. Overexpression of RON or sfRon prevented the BITC effect. These data complement prior work from this group showing elimination of mammary tumor cells via tumor cell apoptosis by BITC administration. The inhibition of breast cancer stem cells is observed at pharmacologic concentrations of BITC. This perspective briefly reviews epidemiologic evidence, preclinical efficacy data, and molecular and cellular mechanistic attributes of BITC. Critical issues relevant to clinical development of BITC are discussed briefly.
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