Evidence map›Paper›PMID 16940111›Full record

ArticleAntimicrobial agents and chemotherapy2006

Tetracyclines specifically target the apicoplast of the malaria parasite Plasmodium falciparum.

Erica L Dahl, Jennifer L Shock, Bhaskar R Shenai, Jiri Gut, Joseph L DeRisi, Philip J Rosenthal

Open access · greenAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 119 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
119citing papers in PubMed, 1 pooled it
11.6field-weighted citation impact, top 1% 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

119 citing papers in PubMed, 1 synthesis or guideline pooled it, 267 citations in OpenAlex.

  1. Guideline
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Real-time measurements of ATP dynamics via ATeams inAntimicrobial agents and chemotherapy · 2024
    Article
  16. Article
  17. Novel Therapeutics for Malaria.Pharmaceutics · 2023
    Review
  18. Review
  19. Review
  20. Review

59 more citing papers are in PubMed but not listed here.

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

6 authors at 1 institution in 1 country.

Erica L DahlDepartment of Medicine, University of California - San Francisco, CA 94143-0811, USA.
Jennifer L Shock
Bhaskar R Shenai
Jiri Gut
Joseph L DeRisi
Philip J Rosenthal
University of California, San Francisco · US

Funding

Microbial Pathogenesis and Host DefenseT32AI060537 · NIAID · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI Joanne N. Engel · 2004 to 2026
$6.5M
Novel Anti-Malarials by Combinatorial PharmacogenomicsU01AI053862 · NIAID · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI DERISI, JOSEPH · 2002 to 2006
$4.3M
Novel Tetracycyclines as Antimalarial DrugsR42AI051800 · NIAID · PARATEK PHARMACEUTICALS · PI DRAPER, MICHAEL P · 2004 to 2005
$2.6M
Development of Novel Tetracyclines as Antimalarial DrugsR43AI051800 · NIAID · PARATEK PHARMACEUTICALS · PI DRAPER, MICHAEL P · 2002 to 2002
$99k
NIAID NIH HHS AI051800NIAID NIH HHS AI053862NIAID NIH HHS R42 AI051800NIAID NIH HHS R43 AI051800NIAID NIH HHS T32 AI060537NIAID NIH HHS U01 AI053862
6 · The paper itself

Abstract

Tetracyclines are effective but slow-acting antimalarial drugs whose mechanism of action remains uncertain. To characterize the antimalarial mechanism of tetracyclines, we evaluated their stage-specific activities, impacts on parasite transcription, and effects on two predicted organelle targets, the apicoplast and the mitochondrion, in cultured Plasmodium falciparum. Antimalarial effects were much greater after two 48-h life cycles than after one cycle, even if the drugs were removed at the end of the first cycle. Doxycycline-treated parasites appeared morphologically normal until late in the second cycle of treatment but failed to develop into merozoites. Doxycycline specifically impaired the expression of apicoplast genes. Apicoplast morphology initially appeared normal in the presence of doxycycline. However, apicoplasts were abnormal in the progeny of doxycycline-treated parasites, as evidenced by a block in apicoplast genome replication, a lack of processing of an apicoplast-targeted protein, and failure to elongate and segregate during schizogeny. Replication of the nuclear and mitochondrial genomes and mitochondrial morphology appeared normal. Our results demonstrate that tetracyclines specifically block expression of the apicoplast genome, resulting in the distribution of nonfunctional apicoplasts into daughter merozoites. The loss of apicoplast function in the progeny of treated parasites leads to a slow but potent antimalarial effect.

Indexed as

AnimalsAntimalarialsCells, CulturedDNA, ProtozoanDNA ReplicationDoxycyclineErythrocytesGene ExpressionHumansOligonucleotide Array Sequence AnalysisPlasmodium falciparumProtozoan ProteinsTetracyclinesAntimalarialsDNA, ProtozoanDoxycyclineProtozoan ProteinsTetracyclines

Identifiers

PMID16940111
PMCPMC1563505
OpenAlexW2082992930

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.