Combinatorial epigenetic mechanisms and efficacy of early breast cancer inhibition by nutritive botanicals.

Combinatorial epigenetic mechanisms and efficacy of early breast cancer inhibition by nutritive botanicals.
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营养植物体抑制早期乳腺癌的结合表观遗传机制和功效。

DOI:
10.2217/epi-2016-0024
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发表时间:
2016-08
期刊:
影响因子:
3.8
通讯作者:
Tollefsbol TO
Tollefsbol TO
中科院分区:
医学4区
文献类型:
--
作者:
Li Y;Buckhaults P;Cui X;Tollefsbol TO

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异常的表观遗传事件是不同类型癌症发病机制的重要因素,具有表观遗传特性的膳食植物药可以影响癌症的早期发展,从而起到预防癌症的作用。我们试图研究包括绿茶多酚(GTPs)和西兰花芽(BSp)在内的生物活性膳食成分在乳腺肿瘤发生过程中中和表观遗传畸变的潜在组合效应。在乳腺癌转化细胞系统和乳腺癌小鼠异种移植中评估了组合效应。GTPs中的表没食子儿茶素-3-没食子酸酯和BSp中的萝卜硫素联合治疗可协同抑制乳腺癌细胞的生长。进一步的研究表明,这种组合导致了全基因组的表观遗传改变。组合饮食显著抑制乳腺癌小鼠异种移植瘤的生长。总的来说,这些研究表明,gtp和BSp联合使用至少在一定程度上通过调节表观遗传机制,在抑制早期乳腺癌发展方面非常有效。
Aberrant epigenetic events are important contributors to the pathogenesis of different types of cancers and dietary botanicals with epigenetic properties can influence early cancer development leading to cancer prevention effects. We sought to investigate potential combinatorial effects of bioactive dietary components including green tea polyphenols (GTPs) and broccoli sprouts (BSp) on neutralizing epigenetic aberrations during breast tumorigenesis. The combinatorial effects were evaluated in a breast cancer transformation cellular system and breast cancer mouse xenografts. Combined treatment with epigallocatechin-3-gallate in GTPs and sulforaphane in BSp resulted in a synergistic inhibition of breast cancer cellular growth. Further studies revealed this combination led to genome-wide epigenetic alterations. Combinatorial diets significantly inhibited tumor growth in breast cancer mouse xenografts. Collectively, these studies indicate that combined GTPs and BSp are highly effective in inhibiting early breast cancer development by, at least in part, regulating epigenetic mechanisms.
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