Evidence map›Paper›PMID 25070106›Full record

ArticleAntimicrobial agents and chemotherapy2014

Biochemical and antiparasitic properties of inhibitors of the Plasmodium falciparum calcium-dependent protein kinase PfCDPK1.

Keith H Ansell, Hayley M Jones, David Whalley, Alisdair Hearn, Debra L Taylor, Emmanuel C Patin, Timothy M Chapman, Simon A Osborne, Claire Wallace, Kristian Birchall and 7 more

Open access · hybridAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 12% of its field
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, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Adapt or Die: Targeting Unique Transmission-Stage Biology for Malaria Elimination.Frontiers in cellular and infection microbiology · 2022
    Review
  5. ACS infectious diseases · 2021
    Review
  6. Review
  7. Review
  8. Review
  9. Article
  10. Article
  11. Review
  12. Review
  13. Plasmodial Kinase Inhibitors: License to Cure?Journal of medicinal chemistry · 2018
    Article
  14. Review
  15. Article
  16. Article
  17. Review
  18. Article
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

17 authors at 1 institution in 1 country.

Keith H AnsellMRC Technology, Centre for Therapeutics Discovery, Mill Hill, London, United Kingdom.
Hayley M JonesMRC Technology, Centre for Therapeutics Discovery, Mill Hill, London, United Kingdom.
David WhalleyMRC Technology, Centre for Therapeutics Discovery, Mill Hill, London, United Kingdom.
Alisdair HearnMRC Technology, Centre for Therapeutics Discovery, Mill Hill, London, United Kingdom.
Debra L TaylorMRC Technology, Centre for Therapeutics Discovery, Mill Hill, London, United Kingdom.
Emmanuel C PatinMRC Technology, Centre for Therapeutics Discovery, Mill Hill, London, United Kingdom.
Timothy M ChapmanMRC Technology, Centre for Therapeutics Discovery, Mill Hill, London, United Kingdom.
Simon A OsborneMRC Technology, Centre for Therapeutics Discovery, Mill Hill, London, United Kingdom.
Claire WallaceMRC Technology, Centre for Therapeutics Discovery, Mill Hill, London, United Kingdom.
Kristian BirchallMRC Technology, Centre for Therapeutics Discovery, Mill Hill, London, United Kingdom.
Jonathan LargeMRC Technology, Centre for Therapeutics Discovery, Mill Hill, London, United Kingdom.
Nathalie BoulocMRC Technology, Centre for Therapeutics Discovery, Mill Hill, London, United Kingdom.
Ela Smiljanic-HurleyMRC Technology, Centre for Therapeutics Discovery, Mill Hill, London, United Kingdom.
Barbara CloughDivision of Parasitology, MRC National Institute for Medical Research, Mill Hill, London, United Kingdom.
Robert W MoonDivision of Parasitology, MRC National Institute for Medical Research, Mill Hill, London, United Kingdom.
Judith L GreenDivision of Parasitology, MRC National Institute for Medical Research, Mill Hill, London, United Kingdom.
Anthony A HolderDivision of Parasitology, MRC National Institute for Medical Research, Mill Hill, London, United Kingdom aholder@nimr.mrc.ac.uk.ORCID http://orcid.org/0000-0002-8490-6058
LifeArc · GB

Funding

Medical Research Council MC_U117532067Medical Research Council U117532067
6 · The paper itself

Abstract

PfCDPK1 is a Plasmodium falciparum calcium-dependent protein kinase, which has been identified as a potential target for novel antimalarial chemotherapeutics. In order to further investigate the role of PfCDPK1, we established a high-throughput in vitro biochemical assay and used it to screen a library of over 35,000 small molecules. Five chemical series of inhibitors were initially identified from the screen, from which series 1 and 2 were selected for chemical optimization. Indicative of their mechanism of action, enzyme inhibition by these compounds was found to be sensitive to both the ATP concentration and substitution of the amino acid residue present at the "gatekeeper" position at the ATP-binding site of the enzyme. Medicinal chemistry efforts led to a series of PfCDPK1 inhibitors with 50% inhibitory concentrations (IC50s) below 10 nM against PfCDPK1 in a biochemical assay and 50% effective concentrations (EC50s) less than 100 nM for inhibition of parasite growth in vitro. Potent inhibition was combined with acceptable absorption, distribution, metabolism, excretion, and toxicity (ADMET) properties and equipotent inhibition of Plasmodium vivax CDPK1. However, we were unable to correlate biochemical inhibition with parasite growth inhibition for this series overall. Inhibition of Plasmodium berghei CDPK1 correlated well with PfCDPK1 inhibition, enabling progression of a set of compounds to in vivo evaluation in the P. berghei rodent model for malaria. These chemical series have potential for further development as inhibitors of CDPK1.

Indexed as

AnimalsAntimalarialsCalcium-Calmodulin-Dependent Protein KinasesMalariaMicePlasmodium bergheiPlasmodium falciparumPlasmodium vivaxProtein Kinase InhibitorsProtein KinasesProtozoan ProteinsAntimalarialsCalcium-Calmodulin-Dependent Protein KinasesProtein Kinase InhibitorsProtein KinasesProtozoan Proteins

Identifiers

PMID25070106
PMCPMC4187893
OpenAlexW2024408457

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.