Evidence map›Paper›PMID 28081440›Full record

ArticleCell host & microbe2017

A Knockout Screen of ApiAP2 Genes Reveals Networks of Interacting Transcriptional Regulators Controlling the Plasmodium Life Cycle.

Katarzyna Modrzynska, Claudia Pfander, Lia Chappell, Lu Yu, Catherine Suarez, Kirsten Dundas, Ana Rita Gomes, David Goulding, Julian C Rayner, Jyoti Choudhary and 1 more

Abstract read
In one paragraph

Article in Cell host & microbe, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 130 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
130citing papers in PubMed, 1 pooled it
–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

130 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  14. Malaria: past, present, and future.Signal transduction and targeted therapy · 2025
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70 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

11 authors.

Katarzyna ModrzynskaWellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK. Electronic address: km8@sanger.ac.uk.
Claudia PfanderWellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK.
Lia ChappellWellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK.
Lu YuWellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK.
Catherine SuarezWellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK.
Kirsten DundasWellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK.
Ana Rita GomesWellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK.
David GouldingWellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK.
Julian C RaynerWellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK.
Jyoti ChoudharyWellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK.
Oliver BillkerWellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK. Electronic address: ob4@sanger.ac.uk.

Funding

Medical Research Council G0501670Wellcome Trust 098051
6 · The paper itself

Abstract

A family of apicomplexa-specific proteins containing AP2 DNA-binding domains (ApiAP2s) was identified in malaria parasites. This family includes sequence-specific transcription factors that are key regulators of development. However, functions for the majority of ApiAP2 genes remain unknown. Here, a systematic knockout screen in Plasmodium berghei identified ten ApiAP2 genes that were essential for mosquito transmission: four were critical for the formation of infectious ookinetes, and three were required for sporogony. We describe non-essential functions for AP2-O and AP2-SP proteins in blood stages, and identify AP2-G2 as a repressor active in both asexual and sexual stages. Comparative transcriptomics across mutants and developmental stages revealed clusters of co-regulated genes with shared cis promoter elements, whose expression can be controlled positively or negatively by different ApiAP2 factors. We propose that stage-specific interactions between ApiAP2 proteins on partly overlapping sets of target genes generate the complex transcriptional network that controls the Plasmodium life cycle.

Indexed as

AnimalsAnophelesApicomplexaDNA-Binding ProteinsFemaleGene Knockout TechniquesLife Cycle StagesMalariaMiceOocystsPlasmodium bergheiProtein DomainsProtozoan ProteinsDNA-Binding ProteinsProtozoan Proteinsap2-lap2-oap2-o2ap2-o3ap2-o4ap2-spap2-sp2ap2-sp3Apetala 2oocyst

Identifiers

PMID28081440
PMCPMC5241200

What OpenQuestion holds

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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.