Anti-Stem Cell Property of Pterostilbene in Gastrointestinal Cancer Cells.

Anti-Stem Cell Property of Pterostilbene in Gastrointestinal Cancer Cells.
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DOI:
10.3390/ijms21249347
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发表时间:
2020-12-08
影响因子:
5.6
通讯作者:
Kuniyasu H
Kuniyasu H
中科院分区:
生物学2区
文献类型:
--
作者:
Mori S;Kishi S;Honoki K;Fujiwara-Tani R;Moriguchi T;Sasaki T;Fujii K;Tsukamoto S;Fujii H;Kido A;Tanaka Y;Luo Y;Kuniyasu H

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Pterostilbene(PTE)是蓝莓中含有的一种天然甾烯类化合物,具有抗氧化作用。相比之下,PTE还在癌细胞中产生氧化应激并提供抗肿瘤作用。在这里,我们使用三种胃肠道癌细胞系,即CT 26,HT 29和MKN 74,研究了PTE这种对比效应的潜在机制。PTE在所有三种细胞系中显示出对细胞增殖、球体形成能力和干细胞标志物表达的剂量依赖性抑制。此外,用PTE处理的细胞显示线粒体膜电位增加,线粒体氧化应激和脂质过氧化物增加。维生素E、N-乙酰-L-半胱氨酸和PTE同时处理后,PTE诱导的线粒体氧化应激和生长抑制被抑制。这些发现表明,PTE诱导癌细胞的氧化应激,抑制干性,并抑制增殖。PTE的这些抗肿瘤作用被认为可用于癌症治疗。
Pterostilbene (PTE) is a natural sterbenoid contained in blueberries that has an antioxidant effect. In contrast, PTE also generates oxidative stress in cancer cells and provides an antitumor effect. Here, we examined the potential mechanism of this contrasting effect of PTE using three gastrointestinal cancer cell lines, namely CT26, HT29, and MKN74. PTE showed a dose-dependent inhibition of cell proliferation, sphere-forming ability, and stem cell marker expression in all three cell lines. Furthermore, the cells treated with PTE showed an increase in mitochondrial membrane potential and an increase in mitochondrial oxidative stress and lipid peroxide. Upon concurrent treatment with vitamin E, N-acetyl-L-cysteine, and PTE, the PTE-induced mitochondrial oxidative stress and growth inhibition were suppressed. These findings indicate that PTE induces oxidative stress in cancer cells, suppresses stemness, and inhibits proliferation. These antitumor effects of PTE are considered to be useful in cancer treatment.
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