Evidence map›Paper›PMID 21275054›Full record

ArticleChemMedChem2011

Design, synthesis and biological evaluation of novel inhibitors of Trypanosoma brucei pteridine reductase 1.

Daniel Spinks, Han B Ong, Chidochangu P Mpamhanga, Emma J Shanks, David A Robinson, Iain T Collie, Kevin D Read, Julie A Frearson, Paul G Wyatt, Ruth Brenk and 2 more

Abstract read
In one paragraph

Article in ChemMedChem, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Daniel SpinksDrug Discovery Unit, Division of Biological Chemistry & Drug Discovery, College of Life Sciences, University of Dundee, Sir James Black Centre, Dundee, Scotland, DD1 5EH, UK.
Han B Ong
Chidochangu P Mpamhanga
Emma J Shanks
David A Robinson
Iain T Collie
Kevin D Read
Julie A Frearson
Paul G Wyatt
Ruth Brenk
Alan H Fairlamb
Ian H Gilbert

Funding

Wellcome Trust 079838Wellcome Trust WT077705Wellcome Trust WT083481
6 · The paper itself

Abstract

Genetic studies indicate that the enzyme pteridine reductase 1 (PTR1) is essential for the survival of the protozoan parasite Trypanosoma brucei. Herein, we describe the development and optimisation of a novel series of PTR1 inhibitors, based on benzo[d]imidazol-2-amine derivatives. Data are reported on 33 compounds. This series was initially discovered by a virtual screening campaign (J. Med. Chem., 2009, 52, 4454). The inhibitors adopted an alternative binding mode to those of the natural ligands, biopterin and dihydrobiopterin, and classical inhibitors, such as methotrexate. Using both rational medicinal chemistry and structure-based approaches, we were able to derive compounds with potent activity against T. brucei PTR1 (K(i)(app)=7 nM), which had high selectivity over both human and T. brucei dihydrofolate reductase. Unfortunately, these compounds displayed weak activity against the parasites. Kinetic studies and analysis indicate that the main reason for the lack of cell potency is due to the compounds having insufficient potency against the enzyme, which can be seen from the low K(m) to K(i) ratio (K(m)=25 nM and K(i)=2.3 nM, respectively).

Indexed as

AnimalsDrug DesignDrug Evaluation, PreclinicalEnzyme InhibitorsModels, MolecularOxidoreductasesStructure-Activity RelationshipEnzyme InhibitorsOxidoreductasespteridine reductase

Identifiers

PMID21275054
PMCPMC3047710

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.