Evidence map›Paper›PMID 22615284›Full record

ArticleAntimicrobial agents and chemotherapy2012

Harmine is a potent antimalarial targeting Hsp90 and synergizes with chloroquine and artemisinin.

Dea Shahinas, Gregory Macmullin, Christan Benedict, Ian Crandall, Dylan R Pillai

Open access · bronzeAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

32 citing papers in PubMed, 73 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. The possibilities and challenges associated with selective targetingTransactions of the Royal Society of South Africa. Royal Society of South Africa · 2025
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  9. TargetingVaccines · 2024
    Review
  10. Article
  11. Article
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  13. Article
  14. Article
  15. Review
  16. Article
  17. Inhibitors of theCells · 2021
    Review
  18. Article
  19. Heat Shock Proteins of Malaria: Highlights and Future Prospects.Advances in experimental medicine and biology · 2021
    Article
  20. Frontiers in microbiology · 2021
    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

5 authors at 3 institutions in 1 country.

Dea ShahinasDepartment of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Ontario, Canada.
Gregory Macmullin
Christan Benedict
Ian Crandall
Dylan R Pillai
University of Toronto · CAMount Sinai Hospital · CAUniversity of Calgary · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Previous studies have shown an antimalarial effect of total alkaloids extracted from leaves of Guiera senegalensis from Mali in West Africa. We independently observed that the beta-carboline alkaloid harmine obtained from a natural product library screen inhibited Plasmodium falciparum heat shock protein 90 (PfHsp90) ATP-binding domain. In this study, we confirmed harmine-PfHsp90-specific affinity using surface plasmon resonance analysis (dissociation constant [K(d)] of 40 μM). In contrast, the related compound harmalol bound human Hsp90 (HsHsp90) (K(d) of 224 μM) more tightly than PfHsp90 (K(d) of 7,010 μM). Site-directed mutagenesis revealed that Arg98 in PfHsp90 is essential for harmine selectivity. In keeping with our model indicating that Hsp90 inhibition affords synergistic combinations with existing antimalarials, we demonstrated that harmine potentiates the effect of chloroquine and artemisinin in vitro and in the Plasmodium berghei mouse model. These findings have implications for the development of novel therapeutic combinations that are synergistic with existing antimalarials.

Indexed as

AnimalsAntimalarialsArtemisininsChloroquineDrug SynergismHarmalineHarmineHSP90 Heat-Shock ProteinsMalariaMiceMice, Inbred BALB CMutagenesis, Site-DirectedPlasmodium bergheiPlasmodium falciparumProtein Structure, QuaternaryProtein Structure, TertiaryAntimalarialsartemisininArtemisininsChloroquineHarmalineharmalolHarmineHSP90 Heat-Shock Proteins

Identifiers

PMID22615284
PMCPMC3421604
OpenAlexW2168536326

What OpenQuestion holds

Textmetadata
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.