Evidence map›Paper›PMID 31521613›Full record

ArticleEBioMedicine2019

Transcriptome profiling reveals functional variation in Plasmodium falciparum parasites from controlled human malaria infection studies.

Regina Hoo, Ellen Bruske, Sandra Dimonte, Lei Zhu, Benjamin Mordmüller, B Kim Lee Sim, Peter G Kremsner, Stephen L Hoffman, Zbynek Bozdech, Matthias Frank and 1 more

Open access · goldAbstract read
In one paragraph

Article in EBioMedicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
4.2field-weighted citation impact, top 6% 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

11 citing papers in PubMed, 33 citations in OpenAlex.

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  5. Pervasive sequence-level variation in the transcriptome ofNAR genomics and bioinformatics · 2022
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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

11 authors at 4 institutions in 4 countries.

Regina HooSchool of Biological Sciences, Nanyang Technological University, Singapore.
Ellen BruskeInstitute of Tropical Medicine, Wilhelmstr. 27, University of Tübingen, 72074 Tübingen, Germany.
Sandra DimonteInstitute of Tropical Medicine, Wilhelmstr. 27, University of Tübingen, 72074 Tübingen, Germany.
Lei ZhuSchool of Biological Sciences, Nanyang Technological University, Singapore.
Benjamin MordmüllerInstitute of Tropical Medicine, Wilhelmstr. 27, University of Tübingen, 72074 Tübingen, Germany; German Center for Infection Research, partner site Tübingen, Germany.
B Kim Lee SimSanaria Inc, 9800 Medical Center Dr A209, Rockville, MD 20850, USA.
Peter G KremsnerInstitute of Tropical Medicine, Wilhelmstr. 27, University of Tübingen, 72074 Tübingen, Germany; Centre de Recherches Médicales de Lambaréné, BP 242 Lambaréné, Gabon.
Stephen L HoffmanSanaria Inc, 9800 Medical Center Dr A209, Rockville, MD 20850, USA.
Zbynek BozdechSchool of Biological Sciences, Nanyang Technological University, Singapore.
Matthias FrankInstitute of Tropical Medicine, Wilhelmstr. 27, University of Tübingen, 72074 Tübingen, Germany. Electronic address: Matthias.frank@praxis-frank-tuebingen.de.
Peter R PreiserSchool of Biological Sciences, Nanyang Technological University, Singapore. Electronic address: prpreiser@ntu.edu.sg.
Nanyang Technological University · SGUniversity of Tübingen · DESanaria · USCentre de Recherche Médicales de Lambaréné · GA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe transcriptome of Plasmodium falciparum clinical isolates varies according to strain, mosquito bites, disease severity and clinical history. Therefore, it remains a challenge to directly interpret the parasite's transcriptomic information into a more general biological signature in a natural human malaria infection. These confounding variations can be potentially overcome with parasites derived from controlled-human malaria infection (CHMI) studies.

methodsWe performed CHMI studies in healthy and immunologically naïve volunteers receiving the same P. falciparum strain ((Sanaria® PfSPZ Challenge (NF54)), but with different sporozoite dosage and route of infection. Parasites isolated from these volunteers at the day of patency were subjected to in vitro culture for several generations and synchronized ring-stage parasites were subjected to transcriptome profiling.

findingsWe observed clear deviations between CHMI-derived parasites from volunteer groups receiving different PfSPZ dose and route. CHMI-derived parasites and the pre-mosquito strain used for PfSPZ generation showed significant transcriptional variability for gene clusters associated with malaria pathogenesis, immune evasion and transmission. These transcriptional variation signature clusters were also observed in the transcriptome of P. falciparum isolates from acute clinical infections.

interpretationOur work identifies a previously unrecognized transcriptional pattern in malaria infections in a non-immune background. Significant transcriptome heterogeneity exits between parasites derived from human infections and the pre-mosquito strain, implying that the malaria parasites undergo a change in functional state to adapt to its host environment. Our work also highlights the potential use of transcriptomics data from CHMI study advance our understanding of malaria parasite adaptation and transmission in humans. FUND: This work is supported by German Israeli Foundation, German ministry for education and research, MOE Tier 1 from the Singapore Ministry of Education Academic Research Fund, Singapore Ministry of Health's National Medical Research Council, National Institute of Allergy and Infectious Diseases, National Institutes of Health, USA and the German Centre for Infection Research (Deutsches Zentrum für Infektionsforschung-DZIF).

Indexed as

Gene Expression ProfilingTranscriptomeHost-Parasite InteractionsHumansMalaria, FalciparumParasite LoadPlasmodium falciparumCHMIMalariaSporozoiteTranscriptome

Identifiers

PMID31521613
PMCPMC6838377
OpenAlexW2973150644

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.