Evidence map›Paper›PMID 29529020›Full record

ArticlePLoS biology2018

The Plasmodium falciparum transcriptome in severe malaria reveals altered expression of genes involved in important processes including surface antigen-encoding var genes.

Gerry Q Tonkin-Hill, Leily Trianty, Rintis Noviyanti, Hanh H T Nguyen, Boni F Sebayang, Daniel A Lampah, Jutta Marfurt, Simon A Cobbold, Janavi S Rambhatla, Malcolm J McConville and 7 more

Abstract read
In one paragraph

Article in PLoS biology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
59citing 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

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

  1. Meta-Analysis of Human Antibodies AgainstFrontiers in immunology · 2022
    Pooled it
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  7. Integrative genomics ofbioRxiv : the preprint server for biology · 2026
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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

17 authors.

Gerry Q Tonkin-HillBioinformatics Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
Leily TriantyThe Eijkman Institute for Molecular Biology, Jakarta, Indonesia.
Rintis NoviyantiThe Eijkman Institute for Molecular Biology, Jakarta, Indonesia.
Hanh H T NguyenSchool of Biosciences, Bio21 Institute, University of Melbourne, Melbourne, Victoria, Australia.
Boni F SebayangThe Eijkman Institute for Molecular Biology, Jakarta, Indonesia.
Daniel A LampahTimika Malaria Research Program, Papuan Health and Community Development Foundation, Timika, Papua, Indonesia.
Jutta MarfurtGlobal and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia.
Simon A CobboldDepartment of Biochemistry and Molecular Biology, Bio21 Institute, University of Melbourne, Melbourne, Victoria, Australia.
Janavi S RambhatlaDepartment of Medicine and Radiology, Royal Melbourne Hospital, University of Melbourne, Melbourne, Victoria, Australia.
Malcolm J McConvilleDepartment of Biochemistry and Molecular Biology, Bio21 Institute, University of Melbourne, Melbourne, Victoria, Australia.
Stephen J RogersonDepartment of Medicine and Radiology, Royal Melbourne Hospital, University of Melbourne, Melbourne, Victoria, Australia.
Graham V BrownThe Nossal Institute for Global Health, University of Melbourne, Parkville, Victoria, Australia.
Karen P DaySchool of Biosciences, Bio21 Institute, University of Melbourne, Melbourne, Victoria, Australia.
Ric N PriceGlobal and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia.
Nicholas M AnsteyGlobal and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia.
Anthony T PapenfussBioinformatics Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
Michael F DuffySchool of Biosciences, Bio21 Institute, University of Melbourne, Melbourne, Victoria, Australia.ORCID 0000-0001-5635-4033

Funding

Wellcome Trust 200909Wellcome Trust 200909/Z/16/Z
6 · The paper itself

Abstract

Within the human host, the malaria parasite Plasmodium falciparum is exposed to multiple selection pressures. The host environment changes dramatically in severe malaria, but the extent to which the parasite responds to-or is selected by-this environment remains unclear. From previous studies, the parasites that cause severe malaria appear to increase expression of a restricted but poorly defined subset of the PfEMP1 variant, surface antigens. PfEMP1s are major targets of protective immunity. Here, we used RNA sequencing (RNAseq) to analyse gene expression in 44 parasite isolates that caused severe and uncomplicated malaria in Papuan patients. The transcriptomes of 19 parasite isolates associated with severe malaria indicated that these parasites had decreased glycolysis without activation of compensatory pathways; altered chromatin structure and probably transcriptional regulation through decreased histone methylation; reduced surface expression of PfEMP1; and down-regulated expression of multiple chaperone proteins. Our RNAseq also identified novel associations between disease severity and PfEMP1 transcripts, domains, and smaller sequence segments and also confirmed all previously reported associations between expressed PfEMP1 sequences and severe disease. These findings will inform efforts to identify vaccine targets for severe malaria and also indicate how parasites adapt to-or are selected by-the host environment in severe malaria.

Indexed as

TranscriptomeAntigens, ProtozoanAntigens, SurfaceGene Expression RegulationHumansMalariaPlasmodium falciparumProtozoan ProteinsSequence Analysis, RNAAntigens, ProtozoanAntigens, Surfaceerythrocyte membrane protein 1, Plasmodium falciparumProtozoan Proteins

Identifiers

PMID29529020
PMCPMC5864071

What OpenQuestion holds

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LicenceCC BY
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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.