In vivo Realization of Dual Photodynamic and Photothermal Therapy for Melanoma by Mitochondria Targeting Dinuclear Ruthenium Complexes under Civil Infrared Low‐power Laser
Dinuclearrutheniumcomplexes with high two-photon absorption in the IR region and photothermal conversion efficiency have been developed to targetmitochondria without penetrating the nucleus for tumor therapy. They show suppressed melanoma tumor growth in vitro and in vivo with dual two-photon photodynamic and photothermaltherapy.
已开发出在 IR 区域具有高双光子吸收和光热转换效率的双核钌配合物以靶向线粒体而无需穿透细胞核进行肿瘤治疗。他们通过双光子光动力和光热疗法在体外和体内显示抑制黑色素瘤肿瘤的生长。
The synthesis and antibacterial activity study of ruthenium-based metallodrugs with a membrane-disruptive mechanism against <i>Staphylococcus aureus</i>
Ruthenium-based antibacterial agents with a membrane-disruptive mechanism were designed and synthesized. The complex Ru2 showed excellent antibacterial activity against S. aureus in vitro and in vivo.
Size-Selective Diffusion of Ferrocenes through Molecular Voids Created by Photolysis of Copolymeric Films
作者:Sharon Gould、Kimberley H. Gray、Richard W. Linton、Thomas J. Meyer
DOI:10.1021/j100043a053
日期:1995.10
Photolysis of the copolymeric films poly(x)[Ru(Me(1)bpy)(2)(vpy)(2)](PF6)(2x), (1 - X)[Ru(vbpy)(3)](PF6)(2-2x) formed by reductive electropolymerization on Pt electrodes (surface coverage Gamma = 2 x 10(-9) to 6 x 10(-9) mol/cm(2)) results in loss of the fragment -[-Ru(Me(4)bpy)(2)](PF6)(2). For x = 0.4-0.6 electrochemical and angle-resolved XPS measurements before and after photolysis show that film thickness is unaffected by photolysis. Diffusion of ferrocene and substituted ferrocenes through the films was studied by rotated disk voltammetry, from which values for PDs,pol were derived. D-s,D-pol is the diffusion coefficient of ferrocene through the film, and P is the partition coefficient within the film. Removal of -[-Ru(Me(4)bpy)(2)](PF6)(2) by photolysis creates molecular sized voids and increases PDs,pol by factors of 10-20. The photolyzed films act as size-selective membranes with PDs,pol, decreasing by as much as 16 as the volume of the ferrocene increases from 150 to 500 Angstrom(3). The diffusional properties of the films can be varied somewhat by adding substituents to the bpy rings of the leaving group or by partly filling the molecular voids by coordination to pyridyl groups released in the photolysis step.
Bithiophene‐Functionalized Infrared Two‐Photon Absorption Metal Complexes as Single‐Molecule Platforms for Synergistic Photodynamic, Photothermal, and Chemotherapy
A planar conjugated ligand functionalized with bithiophene and its Ru(II), Os(II), and Ir(III) complexes have been constructed as single‐molecule platform for synergistic photodynamic, photothermal, and chemotherapy. The complexes have significant two‐photon absorption at 808 nm and remarkable singlet oxygen and superoxide anion production in aqueous solution and cells when exposed to 808 nm infrared irradiation. The most potent Ru(II) complex Ru7 enters tumor cells via the rare macropinocytosis, locates in both nuclei and mitochondria, and regulates DNA‐related chemotherapeutic mechanisms intranuclearly including DNA topoisomerase and RNA polymerase inhibition and their synergistic effects with photoactivated apoptosis, ferroptosis and DNA cleavage. Ru7 exhibits high efficacy in vivo for malignant melanoma and cisplatin‐resistant non‐small cell lung cancer tumors, with a 100% survival rate of mice, low toxicity to normal cells and low residual rate. Such an infrared two‐photon activatable metal complex may contribute to a new generation of single‐molecule‐based integrated diagnosis and treatment platform to address drug resistance in clinical practice and phototherapy for large, deeply located solid tumors.