Single-crystal structure and intracellular localization of Zn(II)-thiosemicarbazone complex targeting mitochondrial...

Area of Science:

• Chemical Biology
• Cancer Research
• Mitochondrial Targeting

Background:

• Tracking drug distribution in cancer cells is crucial for developing effective cancer therapies.
• Thiosemicarbazone complexes are investigated for their potential anti-cancer properties.

Purpose of the Study:

• To design and synthesize a photoluminescent zinc(II)-thiosemicarbazone complex for organelle-specific imaging.
• To evaluate the anti-cancer proliferation activity of the synthesized complex.

Main Methods:

• Synthesis of a Zn(II)-thiosemicarbazone complex (Zn(AP44eT)(NO3)2) with a 1:1 metal-to-ligand ratio.
• Confocal fluorescence imaging to determine cellular localization.
• Cell cycle analysis (G2 phase) and apoptosis assays in MCF-7 cancer cells.

Main Results:

• The Zn(AP44eT)(NO3)2 complex exhibited superior fluorescence and anti-tumor activity compared to the metal-free ligand (AP44eT·HCl).
• Confocal imaging revealed mitochondrial aggregation of the complex.
• Zn(AP44eT)(NO3)2 effectively shortened the G2 phase and promoted apoptosis in MCF-7 cells.

Conclusions:

• The synthesized Zn(AP44eT)(NO3)2 complex is a promising photoluminescent agent for mitochondrial imaging in cancer cells.
• The complex demonstrates significant anti-cancer proliferation effects, likely mediated through mitochondrial pathways and caspase activation.