Evidence map›Paper›PMID 28759609›Full record

ArticlePloS one2017

Knockout of the gamma subunit of the AP-1 adaptor complex in the human parasite Trypanosoma cruzi impairs infectivity and differentiation and prevents the maturation and targeting of the major protease cruzipain.

Claudia Maria do Nascimento Moreira, Cassiano Martin Batista, Jessica Chimenes Fernandes, Rafael Luis Kessler, Maurilio José Soares, Stenio Perdigão Fragoso

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.7field-weighted citation impact, top 28% 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

8 citing papers in PubMed, 10 citations in OpenAlex.

  1. Article
  2. Metacyclogenesis as the Starting Point of Chagas Disease.International journal of molecular sciences · 2023
    Review
  3. Frontiers in cellular and infection microbiology · 2023
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. 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

6 authors at 1 institution in 1 country.

Claudia Maria do Nascimento MoreiraLaboratory of Molecular Biology of Trypanosomatids, Instituto Carlos Chagas/Fiocruz, Curitiba - PR, Brazil.
Cassiano Martin BatistaLaboratory of Cell Biology, Instituto Carlos Chagas/Fiocruz, Curitiba - PR, Brazil.
Jessica Chimenes FernandesLaboratory of Cell Biology, Instituto Carlos Chagas/Fiocruz, Curitiba - PR, Brazil.
Rafael Luis KesslerLaboratory of Functional Genomics. Instituto Carlos Chagas/Fiocruz, Curitiba - PR, Brazil.
Maurilio José SoaresLaboratory of Cell Biology, Instituto Carlos Chagas/Fiocruz, Curitiba - PR, Brazil.
Stenio Perdigão FragosoLaboratory of Molecular Biology of Trypanosomatids, Instituto Carlos Chagas/Fiocruz, Curitiba - PR, Brazil.ORCID http://orcid.org/0000-0002-0909-7940
Fundação Carlos Chagas · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The AP-1 Adaptor Complex assists clathrin-coated vesicle assembly in the trans-Golgi network (TGN) of eukaryotic cells. However, the role of AP-1 in the protozoan Trypanosoma cruzi-the Chagas disease parasite-has not been addressed. Here, we studied the function and localization of AP-1 in different T. cruzi life cycle forms, by generating a gene knockout of the large AP-1 subunit gamma adaptin (TcAP1-γ), and raising a monoclonal antibody against TcAP1-γ. Co-localization with a Golgi marker and with the clathrin light chain showed that TcAP1-γ is located in the Golgi, and it may interact with clathrin in vivo, at the TGN. Epimastigote (insect form) parasites lacking TcAP1-γ (TcγKO) have reduced proliferation and differentiation into infective metacyclic trypomastigotes (compared with wild-type parasites). TcγKO parasites have also displayed significantly reduced infectivity towards mammalian cells. Importantly, TcAP1-γ knockout impaired maturation and transport to lysosome-related organelles (reservosomes) of a key cargo-the major cysteine protease cruzipain, which is important for parasite nutrition, differentiation and infection. In conclusion, the defective processing and transport of cruzipain upon AP-1 ablation may underlie the phenotype of TcγKO parasites.

Indexed as

AnimalsAnimals, Genetically ModifiedAntibodies, MonoclonalChagas DiseaseClathrin-Coated VesiclesCysteine EndopeptidasesEndocytosisGenetic Complementation TestGolgi ApparatusMaleMiceMice, Inbred BALB COrganellesPlasmidsProtozoan ProteinsRecombinant ProteinsAntibodies, MonoclonalcruzipainCysteine EndopeptidasesProtozoan ProteinsRecombinant ProteinsTranscription Factor AP-1

Identifiers

PMID28759609
PMCPMC5536268
OpenAlexW2741532758

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.