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New in vitro highly cytotoxic platinum and palladium cyanoximates with minimal side effects in vivo.
Journal of Inorganic Biochemistry ( IF 3.9 ) Pub Date : 2020-05-06 , DOI: 10.1016/j.jinorgbio.2020.111082
Stephanie D Dannen 1 , Lauren Cornelison 2 , Paul Durham 2 , John E Morley 3 , Kiana Shahverdi 4 , Junwei Du 5 , Haiying Zhou 4 , Leland C Sudlow 4 , Daniel Hunter 6 , Matthew D Wood 6 , Mikhail Y Berezin 7 , Nikolay Gerasimchuk 1
Affiliation  

Several biologically active bivalent Pd and Pt complexes with two structurally similar cyanoxime ligands abbreviated as H(DECO): 2-oximino-2-cyano-N,N'-diethylacetamide, and H(PyrCO): 2-oximino-2-cyan-N-pyrrolidine acetamide were synthesized and characterized using spectroscopic methods, thermal analysis and X-ray crystallography. Structures revealed planar cis-geometry of studied complexes. Freshly obtained Pt(DECO)2, Pd(DECO)2, Pt(PyrCO)2 and Pd(PyrCO)2 complexes were used in for in vitro cytotoxicity assays using two different etiology human cancer cell lines HeLa and WiDr cells. Investigated compounds showed cytotoxicity levels at or above cisplatin. Pt(DECO)2 was also tested in vivo in healthy C57BL/6 mice. The complex was administered at three different dosage (0, 7.5, 15 mg/kg, i.p. once/week), over a total period of 8 weeks. No changes were observed in the animal weight in the treated mice compared to the control dextrose-treated group. The levels of erythrocytes, leukocytes, and hemoglobin were within the normal level suggesting low myelotoxicity. Negligible cardiotoxicity was observed from the histological evaluation of the hearts from the treated animals. Results from the tail nerve conduction velocity (NCV) and nerve histomorphometry suggested no impact of Pt(DECO)2 on peripheral nerves. The complex, however, induced certain hepatotoxicity and lead to the elevation of IL-6, a pro-inflammatory cytokine. Overall, Pt(DECO)2 showed minimal in vivo toxicity, thus presenting a promising candidate for future testing in animal models of cancer.

中文翻译:

新的体外具有高度细胞毒性的铂和氰基亚氨氰钯在体内具有最小的副作用。

具有两个结构相似的氰基肟配体的几种具有生物活性的二价Pd和Pt配合物,缩写为H(DECO):2-氧亚氨基-2-氰基-N,N'-二乙基乙酰胺和H(PyrCO):2-氧亚氨基-2-氰基-合成了N-吡咯烷乙酰胺,并使用光谱方法,热分析和X射线晶体学对其进行了表征。结构揭示了研究复合物的平面顺式几何形状。使用两种不同病因的人类癌细胞系HeLa和WiDr细胞,将新鲜获得的Pt(DECO)2,Pd(DECO)2,Pt(PyrCO)2和Pd(PyrCO)2复合物用于体外细胞毒性测定。研究的化合物在顺铂或高于顺铂时显示出细胞毒性水平。还在健康的C57BL / 6小鼠体内测试了Pt(DECO)2。在8周的总时间内,以三种不同的剂量(0、7.5、15 mg / kg,腹腔一次/周)给予该复合物。与对照葡萄糖治疗组相比,在治疗小鼠中没有观察到动物重量的变化。红细胞,白细胞和血红蛋白的水平在正常水平之内,表明骨髓毒性较低。从经治疗的动物的心脏的组织学评价观察到可忽略的心脏毒性。尾神经传导速度(NCV)和神经组织形态学测定的结果表明Pt(DECO)2对周围神经没有影响。然而,该复合物诱导了一定的肝毒性,并导致炎性细胞因子IL-6升高。总体而言,Pt(DECO)2表现出最小的体内毒性,因此为癌症动物模型的未来测试提供了有希望的候选者。白细胞和血红蛋白均处于正常水平,表明骨髓毒性较低。从经治疗的动物的心脏的组织学评价观察到可忽略的心脏毒性。尾神经传导速度(NCV)和神经组织形态测定的结果表明Pt(DECO)2对周围神经没有影响。然而,该复合物诱导了一定的肝毒性,并导致炎性细胞因子IL-6升高。总体而言,Pt(DECO)2表现出最小的体内毒性,因此为癌症动物模型的未来测试提供了有希望的候选者。白细胞和血红蛋白均处于正常水平,表明骨髓毒性较低。从经治疗的动物的心脏的组织学评价观察到可忽略的心脏毒性。尾神经传导速度(NCV)和神经组织形态测定的结果表明Pt(DECO)2对周围神经没有影响。然而,该复合物诱导了一定的肝毒性,并导致炎性细胞因子IL-6升高。总体而言,Pt(DECO)2表现出最小的体内毒性,因此为癌症动物模型的未来测试提供了有希望的候选者。尾神经传导速度(NCV)和神经组织形态学测定的结果表明Pt(DECO)2对周围神经没有影响。然而,该复合物诱导了一定的肝毒性,并导致炎性细胞因子IL-6升高。总体而言,Pt(DECO)2表现出最小的体内毒性,因此为癌症动物模型的未来测试提供了有希望的候选者。尾神经传导速度(NCV)和神经组织形态学测定的结果表明Pt(DECO)2对周围神经没有影响。然而,该复合物诱导了一定的肝毒性,并导致炎性细胞因子IL-6升高。总体而言,Pt(DECO)2表现出最小的体内毒性,因此为癌症动物模型的未来测试提供了有希望的候选者。
更新日期:2020-05-06
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