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Glycoconjugated Metallohelices have Improved Nuclear Delivery and Suppress Tumour Growth In Vivo.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-06-02 , DOI: 10.1002/anie.202006814
Hualong Song 1 , Simon J Allison 2 , Viktor Brabec 3 , Hannah E Bridgewater 1 , Jana Kasparkova 3 , Hana Kostrhunova 3 , Vojtech Novohradsky 3 , Roger M Phillips 2 , Jitka Pracharova 3, 4 , Nicola J Rogers 1 , Samantha L Shepherd 2 , Peter Scott 1
Affiliation  

Monosaccharides are added to the hydrophilic face of a self‐assembled asymmetric FeII metallohelix, using CuAAC chemistry. The sixteen resulting architectures are water‐stable and optically pure, and exhibit improved antiproliferative selectivity against colon cancer cells (HCT116 p53+/+) with respect to the non‐cancerous ARPE‐19 cell line. While the most selective compound is a glucose‐appended enantiomer, its cellular entry is not mainly glucose transporter‐mediated. Glucose conjugation nevertheless increases nuclear delivery ca 2.5‐fold, and a non‐destructive interaction with DNA is indicated. Addition of the glucose units affects the binding orientation of the metallohelix to naked DNA, but does not substantially alter the overall affinity. In a mouse model, the glucose conjugated compound was far better tolerated, and tumour growth delays for the parent compound (2.6 d) were improved to 4.3 d; performance as good as cisplatin but with the advantage of no weight loss in the subjects.

中文翻译:

糖缀合金属螺旋可改善体内核输送并抑制肿瘤生长。

使用 CuAAC 化学将单糖添加到自组装不对称 Fe II金属螺旋的亲水面上。由此产生的 16 种结构具有水稳定性和光学纯性,并且相对于非癌性 ARPE-19 细胞系,对结肠癌细胞 (HCT116 p53 +/+ ) 表现出更高的抗增殖选择性。虽然最具选择性的化合物是附加葡萄糖的对映体,但其细胞进入主要不是葡萄糖转运蛋白介导的。然而,葡萄糖结合使核递送增加了约 2.5 倍,并且表明与 DNA 存在非破坏性相互作用。添加葡萄糖单位会影响金属螺旋与裸露 DNA 的结合方向,但不会显着改变整体亲和力。在小鼠模型中,葡萄糖结合化合物的耐受性要好得多,母体化合物的肿瘤生长延迟(2.6 天)改善至 4.3 天;效果与顺铂一样好,但具有受试者体重不减轻的优点。
更新日期:2020-08-10
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