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

Autor: Boubaker G; Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern. Länggass-Strasse 122, 3012, Bern, Switzerland. Electronic address: ghalia.boubaker@unibe.ch., Bernal A; Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern. Länggass-Strasse 122, 3012, Bern, Switzerland. Electronic address: alice.bernal1998@gmail.com., Vigneswaran A; Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern. Länggass-Strasse 122, 3012, Bern, Switzerland. Electronic address: anitha.vigneswaran@unibe.ch., Imhof D; Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern. Länggass-Strasse 122, 3012, Bern, Switzerland. Electronic address: imhof.dennis93@gmail.com., de Sousa MCF; Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern. Länggass-Strasse 122, 3012, Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences (GCB), University of Bern, Switzerland. Electronic address: maria.ferreira@unibe.ch., Hänggeli KPA; Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern. Länggass-Strasse 122, 3012, Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences (GCB), University of Bern, Switzerland. Electronic address: kai.haenggeli@unibe.ch., Haudenschild N; Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern. Länggass-Strasse 122, 3012, Bern, Switzerland. Electronic address: haudenschild@gmail.com., Furrer J; Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland. Electronic address: julien.furrer@unibe.ch., Păunescu E; Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland. Electronic address: paunescu_emilia@yahoo.com., Desiatkina O; Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland. Electronic address: oksankanahorna@gmail.com., Hemphill A; Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern. Länggass-Strasse 122, 3012, Bern, Switzerland. Electronic address: andrew.hemphill@unibe.ch.
Jazyk: angličtina
Zdroj: International journal for parasitology. Drugs and drug resistance [Int J Parasitol Drugs Drug Resist] 2024 Aug; Vol. 25, pp. 100544. Date of Electronic Publication: 2024 Apr 27.
DOI: 10.1016/j.ijpddr.2024.100544
Abstrakt: 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 IC 50  < 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 μM but had an impact at 2 μM, and induced zebrafish embryotoxicity at 20 μM, but not at 2 or 0.2 μM. 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.
Competing Interests: Declaration of competing interest None, no conflict of interest.
(Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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