Crystal structure, DFT and Hirshfeld surface studies of a novel zinc(II) ion pair complex based on coumarin Mannich base: In vitro antiproliferative activity

IF 2.7 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR
Erik Ortiz-Blanco , Gabriela Alejandra Sosa-Ortiz , Ricardo Tovar-Miranda , Eva Luz Montoya-Hernández , Enrique Juárez-Aguilar , Tomás Guerrero
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Abstract

Due to their critical biochemical role and low toxicity, zinc(II) complexes have emerged as promising alternatives to platinum-based anticancer agents, and great efforts have been made to describe many complexes with antiproliferative activity. Still, mononuclear anionic zinc(II) complexes remain largely underexplored, particularly those incorporating privileged medicinal scaffolds, such as coumarins. Herein, we report the synthesis, structural characterization, and antiproliferative evaluation of a novel anionic zinc(II) complex [HL]+[ZnLCl₂] derived from 7-Hydroxy-4-methyl-8-(1-pyrrolidinylmethyl)-2H-1-benzopyran-2-one, a ligand that has aroused interest as a potential chemotherapeutic and was previously described by our research group. Single-crystal X-ray diffraction revealed an unusual ionic structure, where the protonated ligand acts as a counterion to a tetrahedral Zn(II) center, which is coordinated to one negatively charged ligand and two chlorides. Hirshfeld surface analysis and Density Functional Theory (DFT) further clarified the anionic complex's non-covalent interactions and electronic properties. The complex showed antiproliferative effects (as assessed by MTT-based viability assay) on HeLa (cervical cancer) and PC3 (prostate cancer) cell lines. These results highlight the critical role of zinc coordination in enhancing bioactivity, and our findings underscore the potential of anionic Zn(II) complexes as tunable platforms for anticancer drug design, expanding the limited repertoire of characterized anionic zinc species and paving the way for further exploration of their therapeutic applications.
基于香豆素曼尼希碱的新型锌离子对配合物的晶体结构、DFT和Hirshfeld表面研究:体外抗增殖活性
由于其重要的生物化学作用和低毒性,锌(II)配合物已成为铂基抗癌药物的有希望的替代品,并且已经努力描述了许多具有抗增殖活性的配合物。尽管如此,单核阴离子锌(II)配合物仍未得到充分开发,特别是那些结合了香豆素等特殊药物支架的配合物。在此,我们报道了一种新型阴离子锌(II)配合物[HL]+[ZnLCl 2]−的合成、结构表征和抗增殖评价,该配合物来源于7-羟基-4-甲基-8-(1-吡咯烷基甲基)- 2h -1-苯并吡喃-2- 1,这种配体作为一种潜在的化疗药物引起了人们的兴趣,之前由我们的研究小组描述过。单晶x射线衍射显示了一个不寻常的离子结构,其中质子化配体作为一个四面体Zn(II)中心的反离子,该中心与一个带负电荷的配体和两个氯化物配合。Hirshfeld表面分析和密度泛函理论(DFT)进一步阐明了阴离子配合物的非共价相互作用和电子性质。该复合物对HeLa(宫颈癌)和PC3(前列腺癌)细胞系显示出抗增殖作用(通过基于mtt的活力测定评估)。这些结果强调了锌配位在增强生物活性方面的关键作用,我们的发现强调了阴离子锌(II)配合物作为抗癌药物设计的可调平台的潜力,扩大了表征阴离子锌的有限曲目,并为进一步探索其治疗应用铺平了道路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Inorganica Chimica Acta
Inorganica Chimica Acta 化学-无机化学与核化学
CiteScore
6.00
自引率
3.60%
发文量
440
审稿时长
35 days
期刊介绍: Inorganica Chimica Acta is an established international forum for all aspects of advanced Inorganic Chemistry. Original papers of high scientific level and interest are published in the form of Articles and Reviews. Topics covered include: • chemistry of the main group elements and the d- and f-block metals, including the synthesis, characterization and reactivity of coordination, organometallic, biomimetic, supramolecular coordination compounds, including associated computational studies; • synthesis, physico-chemical properties, applications of molecule-based nano-scaled clusters and nanomaterials designed using the principles of coordination chemistry, as well as coordination polymers (CPs), metal-organic frameworks (MOFs), metal-organic polyhedra (MPOs); • reaction mechanisms and physico-chemical investigations computational studies of metalloenzymes and their models; • applications of inorganic compounds, metallodrugs and molecule-based materials. Papers composed primarily of structural reports will typically not be considered for publication.
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