Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, 91775-1436 Mashhad, Iran.
Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, 91775-1436 Mashhad, Iran.
Eur J Pharmacol. 2016 Jun 15;781:209-17. doi: 10.1016/j.ejphar.2016.04.026. Epub 2016 Apr 14.
Iron (Fe) chelation therapy was initially designed to alleviate the toxic effects of excess Fe evident in Fe-overload diseases. However, the novel toxicological properties of some Fe chelator-metal complexes have shifted significant attention to their application in cancer chemotherapy. The present study investigates the new role of deferasirox as an anticancer agent due to its ability to chelate with iron. Because of aminoacids antioxidant effect, deferasirox and its two novel amino acid derivatives have been synthesized through the treatment of deferasirox with DCC as well as glycine or phenylalanine methyl ester. All new compounds have been characterized by elemental analysis, FT-IR NMR and mass spectrometry. Therefore, the cytotoxicity of these compounds was screened for antitumor activity against some cell lines using cisplatin as a comparative standard by MTT assay and Flow cytometry. The impact of iron in the intracellular generation of reactive oxygen species was assessed on HT29 and MDA-MB-231 cells. The potential of the synthesized iron chelators for their efficacy to protect cells against model oxidative injury induced was compared. The reactive oxygen species intracellular fluorescence intensity were measured and the result showed that the reactive oxygen species intensity after iron incubation increased while after chelators incubation the reactive oxygen species intensity were decreased significantly. Besides, the effect of the synthesized compounds on mouse fibroblast cell line (L929) was simultaneously evaluated as control. The pharmacological results showed that deferasirox and its two novel aminoacid derivatives were potent anticancer agents.
铁螯合疗法最初旨在减轻铁过载疾病中过量铁引起的毒性作用。然而,一些铁螯合剂-金属配合物的新毒性特性引起了人们对其在癌症化疗中应用的极大关注。本研究探讨了地拉罗司作为一种抗癌剂的新作用,因为它能够螯合铁。由于氨基酸的抗氧化作用,通过用 DCC 以及甘氨酸或苯丙氨酸甲酯处理地拉罗司,合成了地拉罗司及其两种新型氨基酸衍生物。所有新化合物均通过元素分析、FT-IR NMR 和质谱进行了表征。因此,通过 MTT 测定法和流式细胞术,使用顺铂作为比较标准,筛选这些化合物对某些细胞系的抗肿瘤活性的细胞毒性。评估了铁在 HT29 和 MDA-MB-231 细胞内产生活性氧物种的影响。比较了合成铁螯合剂对细胞模型氧化损伤的保护效果。测量了细胞内活性氧物种的荧光强度,结果表明,铁孵育后活性氧物种的强度增加,而螯合剂孵育后活性氧物种的强度显著降低。此外,还同时评估了合成化合物对小鼠成纤维细胞系(L929)的影响作为对照。药理学结果表明,地拉罗司及其两种新型氨基酸衍生物是有效的抗癌剂。