Evidence map›Paper›PMID 21899698›Full record

ArticleCellular microbiology2011

Experimentally controlled downregulation of the histone chaperone FACT in Plasmodium berghei reveals that it is critical to male gamete fertility.

Eliane C Laurentino, Sonya Taylor, Gunnar R Mair, Edwin Lasonder, Richard Bartfai, Hendrik G Stunnenberg, Hans Kroeze, Jai Ramesar, Blandine Franke-Fayard, Shahid M Khan and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in Cellular microbiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
2.5field-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

26 citing papers in PubMed, 47 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Microorganisms · 2023
    Review
  5. Novel systems to study vector-pathogen interactions in malaria.Frontiers in cellular and infection microbiology · 2023
    Review
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  8. Review
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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 at 3 institutions in 2 countries.

Eliane C LaurentinoLeiden Malaria Research Group, Department of Parasitology, Leiden University Medical, Albinusdreef 2, 2333 ZA Leiden, the Netherlands.
Sonya Taylor
Gunnar R Mair
Edwin Lasonder
Richard Bartfai
Hendrik G Stunnenberg
Hans Kroeze
Jai Ramesar
Blandine Franke-Fayard
Shahid M Khan
Chris J Janse
Andrew P Waters
Leiden University · NLRadboud University Nijmegen · NLWellcome Centre for Molecular Parasitology · GB

Funding

Wellcome Trust 083811
6 · The paper itself

Abstract

Human FACT (facilitates chromatin transcription) consists of the proteins SPT16 and SSRP1 and acts as a histone chaperone in the (dis)assembly of nucleosome (and thereby chromatin) structure during transcription and DNA replication. We identified a Plasmodium berghei protein, termed FACT-L, with homology to the SPT16 subunit of FACT. Epitope tagging of FACT-L showed nuclear localization with high expression in the nuclei of (activated) male gametocytes. The gene encoding FACT-L could not be deleted indicating an essential role during blood-stage development. Using a 'promoter-swap' approach whereby the fact-l promoter was replaced by an 'asexual blood stage-specific' promoter that is silent in gametocytes, transcription of fact-l in promoter-swap mutant gametocytes was downregulated compared with wild-type gametocytes. These mutant male gametocytes showed delayed DNA replication and gamete formation. Male gamete fertility was strongly reduced while female gamete fertility was unaffected; residual ookinetes generated oocysts that arrested early in development and failed to enter sporogony. Therefore FACT is critically involved in the formation of fertile male gametes and parasite transmission. 'Promoter swapping' is a powerful approach for the functional analysis of proteins in gametocytes (and beyond) that are essential during asexual blood-stage development.

Indexed as

AnimalsAnophelesCell NucleusDNA-Binding ProteinsDNA, ProtozoanDNA ReplicationDown-RegulationEpitope MappingFemaleFertilityFlagellaGene Expression RegulationGene Knockdown TechniquesGenetic VectorsGerm CellsHistone ChaperonesDNA-Binding ProteinsDNA, ProtozoanHistone ChaperonesProtozoan Proteins

Identifiers

PMID21899698
PMCPMC3429858
OpenAlexW2169300342

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.