N-Metallocenoylsphingosines as targeted ceramidase inhibitors: Syntheses and antitumoral effects.

N-Metallocenoylsphingosines as targeted ceramidase inhibitors: Syntheses and antitumoral effects.
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N-金属茂酰鞘氨醇作为靶向神经酰胺酶抑制剂:合成和抗肿瘤作用

DOI:
10.1016/j.bioorg.2020.103703
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发表时间:
2020
影响因子:
5.1
通讯作者:
R. Schobert
R. Schobert
中科院分区:
化学1区
文献类型:
--
作者:
M. Rothemund;A. Bär;F. Klatt;S. Weidler;L. Köhler;C. Unverzagt;C. D. Kuhn;R. Schobert

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ThreeN-metallocenoylsphingosines with variance in the central metal (Fe, Co, Ru), the charge (neutral or cationic), and the arene ligands (Cp2, Cp*Ph) were synthesized from serine and metallocene carboxylic acids as substrate-analogous inhibitors of human acid ceramidase (AC). Their inhibitory potential was examined using the recombinant full length ASAH1 enzyme, expressed and secreted from High Five insect cells, and the fluorescent substrate Rbm14-12. All complexes inhibited AC, most strongly so ruthenium(II) complex13a. Some antitumoral effects of the complexes, such as the interference with the microtubular and F-actin cytoskeleton of cancer cells, were correlated to their AC-inhibition, whereas others, e.g. their cytotoxicity and their induction of caspase-3/-7 activity in cancer cells, were not. All complexes accumulated preferentially in the lysosomes of cancer cells like their target AC, arrested the cells in G1 phase of the cell cycle, and displayed cytotoxicity with mostly single-digit micromolar IC50values while inducing cancer cell apoptosis.
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