Evidence map›Paper›PMID 27600503›Full record

ArticleInfection and immunity2016

Distinct Prominent Roles for Enzymes of Plasmodium berghei Heme Biosynthesis in Sporozoite and Liver Stage Maturation.

Zaira Rizopoulos, Kai Matuschewski, Joana M Haussig

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.6field-weighted citation impact, top 7% 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

17 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
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  4. Biogenesis of CytochromesACS infectious diseases · 2025
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  5. Biogenesis of cytochromesbioRxiv : the preprint server for biology · 2024
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  10. Characterization of the apicoplast-localized enzymeThe Journal of biological chemistry · 2020
    Article
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  12. Vitamin and cofactor acquisition in apicomplexans: SynthesisThe Journal of biological chemistry · 2020
    Review
  13. Host Porphobilinogen Deaminase Deficiency Confers Malaria Resistance inFrontiers in cellular and infection microbiology · 2020
    Article
  14. Review
  15. Article
  16. Review
  17. Interaction betweenFrontiers in cellular and infection microbiology · 2017
    Article
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

3 authors at 2 institutions in 1 country.

Zaira RizopoulosParasitology Unit, Max Planck Institute for Infection Biology, Berlin, Germany rizopoulos@mpiib-berlin.mpg.de.
Kai MatuschewskiParasitology Unit, Max Planck Institute for Infection Biology, Berlin, Germany.
Joana M HaussigParasitology Unit, Max Planck Institute for Infection Biology, Berlin, Germany.
Max Planck Institute for Infection Biology · DEHumboldt-Universität zu Berlin · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Malarial parasites have evolved complex regulation of heme supply and disposal to adjust to heme-rich and -deprived host environments. In addition to its own pathway for heme biosynthesis, Plasmodium likely harbors mechanisms for heme scavenging from host erythrocytes. Elaborate compartmentalization of de novo heme synthesis into three subcellular locations, including the vestigial plastid organelle, indicates critical roles in life cycle progression. In this study, we systematically profile the essentiality of heme biosynthesis by targeted gene deletion of enzymes in early steps of this pathway. We show that disruption of endogenous heme biosynthesis leads to a first detectable defect in oocyst maturation and sporogony in the Anopheles vector, whereas blood stage propagation, colonization of mosquito midguts, or initiation of oocyst development occurs indistinguishably from that of wild-type parasites. Although sporozoites are produced by parasites lacking an intact pathway for heme biosynthesis, they are absent from mosquito salivary glands, indicative of a vital role for heme biosynthesis only in sporozoite maturation. Rescue of the first defect in sporogony permitted analysis of potential roles in liver stages. We show that liver stage parasites benefit from but do not strictly depend upon their own aminolevulinic acid synthase and that they can scavenge aminolevulinic acid from the host environment. Together, our experimental genetics analysis of Plasmodium enzymes for heme biosynthesis exemplifies remarkable shifts between the use of endogenous and host resources during life cycle progression.

Indexed as

AnimalsAnophelesBacterial ProteinsDisease Models, AnimalFemaleGene Expression ProfilingHemeLife Cycle StagesLiverMiceMice, Inbred C57BLOocystsPlasmodium bergheiReal-Time Polymerase Chain ReactionSporozoitesBacterial ProteinsHeme

Identifiers

PMID27600503
PMCPMC5067757
OpenAlexW2507376633

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.