Luminescent ruthenium–polypyridine complexes & phosphorus ligands: anything but a simple story

2009 ◽  
Vol 38 (6) ◽  
pp. 1621 ◽  
Author(s):  
Isabelle M. Dixon ◽  
Emilie Lebon ◽  
Pierre Sutra ◽  
Alain Igau
Keyword(s):  
Phosphorus Ligands ◽  
Polypyridine Complexes ◽  
Ruthenium Polypyridine

Ruthenium polypyridine complexes of tris-(2-pyridyl)-1,3,5-triazine—unusual building blocks for the synthesis of photochemical molecular devices

2009 ◽  
pp. 4012 ◽  
Author(s):  
Matthias Schwalbe ◽  
Michael Karnahl ◽  
Helmar Görls ◽  
Daniel Chartrand ◽  
Francois Laverdiere ◽  
...  
Keyword(s):  
Building Blocks ◽  
Molecular Devices ◽  
Polypyridine Complexes ◽  
Ruthenium Polypyridine

Polymeric Encapsulation of a Ruthenium Polypyridine Complex for Tumor Targeted 1- and 2-Photon Photodynamic Therapy

2020 ◽  
Author(s):  
Johannes Karges ◽  
Jia Li ◽  
Leli Zeng ◽  
Hui Chao ◽  
Gilles Gasser
Keyword(s):  
Photodynamic Therapy ◽  
Cancer Cell ◽  
Polymeric Nanoparticles ◽  
Multicellular Tumor Spheroid ◽  
Epithelial Tumor ◽  
Ru Complex ◽  
Cell Selectivity ◽  
Polypyridine Complexes ◽  
Ruthenium Polypyridine

Photodynamic therapy is a medical technique, which is gaining increasing attention to treat various types of cancer. Among the investigated classes of photosensitizers, the use of Ru(II) polypyridine complexes is gaining momentum. However, the currently investigated compounds generally show poor cancer cell selectivity. As a consequence, high drug doses are needed, which can cause side effects. To overcome this limitation, there is a need for the development of a suitable drug delivery system to increase the amount of PS delivered to the tumor. Herein, we report on the encapsulation of a promising Ru(II) polypyridyl complex into polymeric nanoparticles with terminal biotin groups. Thanks to this design, the particles showed much higher selectivity for cancer cells in comparison to non-cancerous cells in a 2D monolayer and 3D multicellular tumor spheroid model. As a highlight, upon intravenous injection of an identical amount of the Ru(II) polypyridine complex, an improved accumulation inside an adenocarcinomic human alveolar basal epithelial tumor of a mouse by a factor of 8.7 compared to the Ru complex itself was determined. The nanoparticles were found to have a high phototoxic effect upon 1-photon (500 nm) or 2-photon (800 nm) excitation with an eradication of an adenocarcinomic human alveolar basal epithelial tumor inside a mouse. Overall, this work describes, to the best of our knowledge, the first <i>in vivo</i> study demonstrating the cancer cell selectivity of a very promising Ru(II)-based PDT photosensitizer encapsulated into polymeric nanoparticles with terminal biotin groups.

Synthesis and Biological Evaluation of Ruthenium Polypyridine Complexes with 18β-Glycyrrhetinic Acid as Antibacterial Agents against Staphylococcus aureus

2021 ◽  
Author(s):  
Qin Zhang ◽  
Yan-Shi Xiong ◽  
Jianxin Chen ◽  
Yanhui Tan ◽  
Xiangwen Liao ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Agents ◽  
Biological Evaluation ◽  
Glycyrrhetinic Acid ◽  
Tert Butyl ◽  
Polypyridine Complexes ◽  
Ruthenium Polypyridine ◽  
Synthesis And Biological Evaluation

Abstract Four new ruthenium (II) polypyridine complexes bearing 18β-glycyrtinic acid derivatives, [Ru(bpy)2L](PF6)2 (Ru1), [Ru(dmb)2L](PF6)2 (Ru2), [Ru(dtb)2L](PF6)2 (Ru3) and [Ru(phen)2L](PF6)2 (Ru4) (bpy = 2,2-bipyridine, dmb = 4,4'-dimethyl-2,2'-bipyridine, dtb = 4,4'-di-tert-butyl-2,2'-bipyridine, phen...

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