Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

Trypanothione reductase (TR) catalyzes the NADPH-dependent reduction of trypanothione disulfide (1). TR plays a central role in the trypanosomatid parasite's defense against oxidative stress and has emerged as a promising target for antitrypanosomal drugs. We describe the synthesis and activity of dethiotrypanothione and analogues (2-4) as inhibitors of Trypanosoma cruzi TR. The syntheses of these macrocycles feature ring-closing olefin metathesis (RCM) reactions catalyzed by ruthenium catalyst 17. Derivative 4 is our most potent inhibitor with a Ki=16 microM.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2528058PMC
http://dx.doi.org/10.1021/jo062597sDOI Listing

Publication Analysis

Top Keywords

activity dethiotrypanothione
8
dethiotrypanothione analogues
8
trypanothione reductase
8
synthesis inhibitory
4
inhibitory activity
4
analogues trypanothione
4
reductase trypanothione
4
reductase catalyzes
4
catalyzes nadph-dependent
4
nadph-dependent reduction
4

Similar Publications

Chagas disease remains a major public health challenge, and there is a need for new therapeutic agents. N-heterocyclic carbene (NHC) complexes, particularly those linked to silver or gold, have shown significant anticancer, antimicrobial, and antiparasitic activities. This study aimed to evaluate the efficacy of four NHC compounds (QMT3, QMT4, QMT7, and QMT8) against Trypanosoma cruzi, the causative agent of Chagas disease.

View Article and Find Full Text PDF

Mechanistic, in-silico and in vitro studies with nitrofurans reveal potent leishmanicidal activity and inhibition of trypanothione reductase.

Int J Parasitol Drugs Drug Resist

August 2025

Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24007, León, Spain; Instituto de Biomedicina (IBIOMED), Universidad de León, Campus de Vegazana s/n, 24007, León, Spain. Electronic address:

Visceral leishmaniasis caused by Leishmania infantum and Leishmania donovani is one of the neglected tropical diseases (NTDs) caused by trypanosomatids with treatment options limited to outdated drugs often causing adverse effects and promoting drug resistance. Previous antileishmanial drug discovery campaigns have identified nitroheterocyclic molecules with high efficacy and a high selectivity index. Therefore, we have evaluated on our screening platform of fluorescent L.

View Article and Find Full Text PDF

Cutaneous leishmaniasis, a neglected tropical disease (NTD) caused by Leishmania tropica, Leishmania major and other members of the same species, poses significant challenges in the public health sector, especially in developing countries. The limitations of current treatments, including toxicity, resistance, availability, and cost effectiveness, necessitate the development of novel therapeutics. This study investigated the leishmanicidal potential of five Thiadiazine thione derivatives (THTT) against L.

View Article and Find Full Text PDF

Visceral leishmaniasis, caused by the parasite , is a life-threatening disease with limited therapeutic options that are often associated with toxicity and resistance. In this study, we investigated the leishmanicidal effects of silibinin, a key flavonolignan from , against both the promastigote and intracellular amastigote forms of . Mechanistically, silibinin inhibits trypanothione reductase (TR), disrupting the redox balance in the parasite and causing cell death.

View Article and Find Full Text PDF

In Vitro and In Silico Assessments of Curcuminoids and Turmerones from as Novel Inhibitors of Arginase.

Pharmaceuticals (Basel)

June 2025

Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil.

: The anti- potential of and its derivatives, such as curcuminoids, is well-established, yet their mechanisms of action remain underexplored. This study investigates the inhibitory effects of extracts and curcumin on arginase, a key enzyme in polyamine and trypanothione biosynthesis, and evaluates their antiparasitic activity. : Extracts were prepared via rhizome successive maceration with hexane (HEXCURC), dichloromethane (DCCURC), and ethanol (ETOHCURC) and chemically characterized by a combination of chromatographic and spectrometric methods.

View Article and Find Full Text PDF