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논문 기본 정보

자료유형
학술저널
저자정보
Su-Hyeong Kim (University of Pittsburgh School of Medicine) Eun-Ryeong Hahm (University of Pittsburgh School of Medicine) Krishna B. Singh (University of Pittsburgh School of Medicine) Shivendra V. Singh (University of Pittsburgh School of Medicine)
저널정보
대한암예방학회 대한암예방학회지 대한암예방학회지 제25권 제1호
발행연도
2020.1
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1 - 12 (12page)

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Previous studies have demonstrated inhibitory effect of garlic component diallyl trisulfide (DATS) on growth of breast cancer cells in vitro and in vivo. This study investigated the effect of DATS on oncogenic signaling regulated by leptin, which plays an important role in breast carcinogenesis. Leptin-induced phosphorylation and nuclear translocation of STAT3 was inhibited significantly in the presence of DATS in MCF-7 (a luminal-type human breast cancer cell line) and MDA-MB-231 (a basal-like human breast cancer cell line). Leptin-stimulated cell proliferation, clonogenic cell survival, and migration and/or invasion ability in MCF-7 and/or MDA-MB-231 cells were also suppressed by DATS treatment. DATS exposure resulted in inhibition of leptin-stimulated expression of protein and/ or mRNA levels of Bcl-2, Bcl-xL, Cyclin D1, vascular endothelial growth factor, and matrix metalloproteinase-2. Western blotting revealed a decrease in protein levels of phosphorylated STAT3 in breast cancer xenografts from DATS-treated mice when compared to controls in vivo. However, the incidence of N -methylN -nitrosourea-induced luminal-type breast cancer development in rats was not affected by oral administration of 5 mg/kg or 25 mg/kg DATS. The present study reveals that oncogenic signaling induced by leptin is inhibited in the presence of DATS but higher doses of this phytochemical may be required to achieve chemopreventive activity. Key Words Breast cancer, Leptin, STAT3, Diallyl trisulfide, Chemoprevention

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