In vitro and in vivo activities of a trithiolato-diRuthenium complex conjugated with sulfadoxine against the apicomplexan parasite Toxoplasma gondii

被引：0

作者：

Boubaker, Ghalia ^{[1
]}

Bernal, Alice ^{[1
]}

Vigneswaran, Anitha ^{[1
]}

Imhof, Dennis ^{[1
]}

de Sousa, Maria Cristina Ferreira ^{[1
,2
]}

Hanggeli, Kai Pascal Alexander ^{[1
,2
]}

Haudenschild, Noe ^{[1
]}

Furrer, Julien ^{[3
]}

Paunescu, Emilia ^{[3
]}

Desiatkina, Oksana ^{[3
]}

Hemphill, Andrew ^{[1
]}

机构：

[1] Univ Bern, Vetsuisse Fac, Dept Infect Dis & Pathobiol, Inst Parasitol, Langgass Str 122, CH-3012 Bern, Switzerland

[2] Univ Bern, Grad Sch Cellular & Biomed Sci GCB, Bern, Switzerland

[3] Univ Bern, Dept Chem Biochem & Pharmaceut Sci, Freiestr 3, CH-3012 Bern, Switzerland

来源：

INTERNATIONAL JOURNAL FOR PARASITOLOGY-DRUGS AND DRUG RESISTANCE | 2024年 / 25卷

基金：

瑞士国家科学基金会;

关键词：

Organometallic drugs; Sulfadoxine; Toxoplasma; Trithiolato diruthenium complex; Proliferation inhibition; Cytotoxicity; Transmission electron microscopy; Splenocytes; In vivo efficacy; MITOCHONDRIAL-MEMBRANE; RUTHENIUM COMPLEXES; NEOSPORA-CANINUM; TACHYZOITES; APOPTOSIS; AGENTS; MICE;

D O I：

10.1016/j.ijpddr.2024.100544

中图分类号：

R38 [医学寄生虫学]; Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ; 100103 ;

摘要：

Organometallic compounds, including Ruthenium complexes, have been widely developed as anti-cancer chemotherapeutics, but have also attracted much interest as potential anti-parasitic drugs. Recently hybrid drugs composed of organometallic Ruthenium moieties that were complexed to different antimicrobial agents were synthesized. One of these compounds, a trithiolato-diRuthenium complex (RU) conjugated to sulfadoxine (SDX), inhibited proliferation of Toxoplasma gondii tachyzoites grown in human foreskin fibroblast (HFF) monolayers with an IC50 < 150 nM, while SDX and the non-modified RU complex applied either individually or as an equimolar mixture were much less potent. In addition, conjugation of SDX to RU lead to decreased HFF cytotoxicity. RU-SDX did not impair the in vitro proliferation of murine splenocytes at concentrations ranging from 0.1 to 0.5 <mu>M but had an impact at 2 mu M, and induced zebrafish embryotoxicity at 20 mu M, but not at 2 or 0.2 mu M. RU-SDX acted parasitostatic but not parasiticidal, and induced transient ultrastructural changes in the mitochondrial matrix of tachyzoites early during treatment. While other compounds that target the mitochondrion such as the uncouplers FCCP and CCCP and another trithiolato-Ruthenium complex conjugated to adenine affected the mitochondrial membrane potential, no such effect was detected for RU-SDX. Evaluation of the in vivo efficacy of RU-SDX in a murine T. gondii oocyst infection model comprised of non-pregnant outbred CD1 mice showed no effects on the cerebral parasite burden, but reduced parasite load in the eyes and in heart tissue.

引用

页数：13