Effects of Iodonium Analogs on Nadph Oxidase 1 in Human Colon Cancer Cells.

Effects of Iodonium Analogs on Nadph Oxidase 1 in Human Colon Cancer Cells.
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DOI:
10.3390/antiox10111757
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发表时间:
2021-11-03
期刊:
Antioxidants (Basel, Switzerland)
影响因子:
--
通讯作者:
Doroshow JH
Doroshow JH
中科院分区:
其他
文献类型:
--
作者:
Roy KK;Lu J;Doroshow JH

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最近的研究表明,在被假定为 NADPH 氧化酶家族抑制剂的分子中,已知广泛干扰黄素脱氢酶功能的碘鎓类似物证明了作为 NADPH 氧化酶毒物的机制有效性。在最近的工作中,我们生产了一系列新型碘化合物作为这些氧化酶的假定抑制剂。为了评估两种具有良好化学性质的新型分子 NSC 740104 和 NSC 751140 的潜在效用,我们将这些化合物与此类化合物的两种标准抑制剂二亚苯基碘鎓和二-2-噻吩基碘鎓在需要 NADPH 氧化酶 1 功能的人类结肠癌细胞中的抗增殖、细胞周期和基因表达作用方面进行了比较。这两种新型药物均阻断 NADPH 氧化酶相关的活性氧产生,抑制肿瘤细胞增殖,在细胞周期进程中产生 G1/S 阻滞,并以与母体分子相似或更好的方式在低 nM 浓度下抑制 mRNA 和蛋白质水平的 NADPH 氧化酶 1 表达。这些研究表明,NSC 740104 和 NSC 751140 应进一步开发为机制工具,以更好地了解 NADPH 氧化酶抑制的作用,作为开发结肠癌新型治疗药物的方法。
Recent studies suggest that of the molecules postulated to function as inhibitors of the NADPH oxidase family of enzymes iodonium analogs known to broadly interfere with flavin dehydrogenase function demonstrate mechanistic validity as NADPH oxidase poisons. In recent work, we have produced a series of novel iodonium compounds as putative inhibitors of these oxidases. To evaluate the potential utility of two novel molecules with favorable chemical properties, NSC 740104 and NSC 751140, we compared effects of these compounds to the two standard inhibitors of this class, diphenyleneiodonium and di-2-thienyliodonium, with respect to antiproliferative, cell cycle, and gene expression effects in human colon cancer cells that require the function of NADPH oxidase 1. Both new agents blocked NADPH oxidase-related reactive oxygen production, inhibited tumor cell proliferation, produced a G1/S block in cell cycle progression, and inhibited NADPH oxidase 1 expression at the mRNA and protein levels at low nM concentrations in a fashion similar to or better than the parent molecules. These studies suggest that NSC 740104 and NSC 751140 should be developed further as mechanistic tools to better understand the role of NADPH oxidase inhibition as an approach to the development of novel therapeutic agents for colon cancer.
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