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Structure-activity Relationships of 2‑quinolinecarboxaldehyde Thiosemicarbazone gallium(III) Complexes With Potent and Selective Anticancer Activity

Structure-activity Relationships of 2‑quinolinecarboxaldehyde Thiosemicarbazone gallium(III) Complexes With Potent and Selective Anticancer Activity

Wanbao Cao, Jinxu Qi, Kun Qian, Liang Tian, Zhen Cheng, Yihong Wang

J Inorg Biochem. 2019 Feb;191:174-182.

PMID: 30530178

Abstract:

Six gallium(III) complexes (Ga1-Ga6) with 2‑quinolinecarboxaldehyde thiosemicarbazone analogues were synthesized and characterized. These gallium(III) complexes exhibited potent anticancer activity and exceeded that of the corresponding metal free ligands. Importantly, these gallium(III) complexes have a strong selectivity for tumor cells. Through the study of cellular mechanisms, we have found that the lipophilicity of ligands is closely linked to the antitumor activity of gallium(III) complexes. Additionally, we have chosen Ga6 with the best anti-tumor activity to study the mechanism of apoptosis. Caspase-3 and 9 activation and Annexin V-FITC/Propidium iodide (PI) dual-staining studies revealed that Ga6 promote apoptosis in A549 cells lines. Ga6 induces intracellular reactive oxygen species (ROS) and disrupts mitochondrial membrane potential.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP13450914	Gallium(III) iodide		13450-91-4	Price

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