H89 enhances the sensitivity of cancer cells to glyceryl trinitrate through a purinergic receptor-dependent pathway.

H89 enhances the sensitivity of cancer cells to glyceryl trinitrate through a purinergic receptor-dependent pathway.
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DOI:
10.18632/oncotarget.3124
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发表时间:
2015-03-30
期刊:
影响因子:
--
通讯作者:
Bettaieb A
Bettaieb A
中科院分区:
其他
文献类型:
--
作者:
Cortier M;Boina-Ali R;Racoeur C;Paul C;Solary E;Jeannin JF;Bettaieb A

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已知高剂量的有机硝酸甘油三硝酸酯 (GTN)(一种一氧化氮 (NO) 供体)会引发人类癌细胞凋亡。在这里,我们表明,当与 H89、N-[2-(对溴肉桂氨基)乙基]-5-异喹啉磺酰胺.2HCl 组合时,用亚毒性浓度的 GTN 可以获得这种细胞毒性作用。这种协同效应需要 H89 产生活性氧 (ROS),GTN 处理产生 NO,从而导致 cGMP 产生和 PKG 激活。此外,GTN/H89 协同作用因苏拉明抑制 P2-嘌呤受体以及与 ATP/UDP 竞争而减弱。通过用反义寡核苷酸下调基因,发现 P2 嘌呤能受体 P2X3、P2Y1 和 P2Y6 在产生这种细胞毒性作用中发挥作用。因此,H89 可能充当 ATP 模拟物,与 GTN 协同作用,引发侵袭性癌细胞的凋亡。
High doses of the organic nitrate glyceryl trinitrate (GTN), a nitric oxide (NO) donor, are known to trigger apoptosis in human cancer cells. Here, we show that such a cytotoxic effect can be obtained with subtoxic concentrations of GTN when combined with H89, N-[2-(p-bromocinnamylamino)ethyl]-5-isoquinolinesulphonamide.2HCl. This synergistic effect requires the generation of reactive oxygen species (ROS) from H89 and NO from GTN treatment that causes cGMP production and PKG activation. Furthermore, the GTN/H89 synergy was attenuated by inhibition of P2-purinergic receptors with suramin and competition with ATP/UDP. By down-regulating genes with antisense oligonucleotides, P2-purinergic receptors P2X3, P2Y1, and P2Y6 were found to have a role in creating this cytotoxic effect. Thus, H89 likely acts as an ATP mimetic synergizing with GTN to trigger apoptosis in aggressive cancer cells.
DOI: 10.1016/0003-2697(82)90118-x
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