Evidence map›Paper›PMID 31618282›Full record

ArticlePloS one2019

Engineering a single-chain antibody against Trypanosoma cruzi metacyclic trypomastigotes to block cell invasion.

Lara Maria Kalempa Demeu, Rodrigo Jahn Soares, Juliana Severo Miranda, Lisandro A Pacheco-Lugo, Kelin Gonçalves Oliveira, Cristian Andrés Cortez Plaza, Philippe Billiald, Juliana Ferreira de Moura, Nobuko Yoshida, Larissa Magalhães Alvarenga and 1 more

Abstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–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

3 citing papers in PubMed.

  1. Review
  2. Evolution ofInternational journal of molecular sciences · 2020
    Review
  3. The Glycan Structure ofMolecules (Basel, Switzerland) · 2020
    Review
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.

Lara Maria Kalempa DemeuDepartamento de Bioquímica e Biologia Molecular, Setor de Ciências Biológicas, Universidade Federal do Paraná,Curitiba, Brasil.
Rodrigo Jahn SoaresDepartamento de Bioquímica e Biologia Molecular, Setor de Ciências Biológicas, Universidade Federal do Paraná,Curitiba, Brasil.
Juliana Severo MirandaDepartamento de Patologia Básica, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Brasil.
Lisandro A Pacheco-LugoDepartamento de Bioquímica e Biologia Molecular, Setor de Ciências Biológicas, Universidade Federal do Paraná,Curitiba, Brasil.
Kelin Gonçalves OliveiraDepartamento de Bioquímica e Biologia Molecular, Setor de Ciências Biológicas, Universidade Federal do Paraná,Curitiba, Brasil.
Cristian Andrés Cortez PlazaDepartamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brasil.
Philippe BillialdFaculte de Pharmacie, Universite Paris-Sud, Paris, France.
Juliana Ferreira de MouraDepartamento de Patologia Básica, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Brasil.
Nobuko YoshidaDepartamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brasil.
Larissa Magalhães AlvarengaDepartamento de Patologia Básica, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Brasil.
Wanderson Duarte DaRochaDepartamento de Bioquímica e Biologia Molecular, Setor de Ciências Biológicas, Universidade Federal do Paraná,Curitiba, Brasil.ORCID 0000-0002-8722-5143

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Trypanosoma cruzi is a flagellate protozoan pathogen that causes Chagas disease. Currently there is no preventive treatment and the efficiency of the two drugs available is limited to the acute phase. Therefore, there is an unmet need for innovative tools to block transmission in endemic areas. In this study, we engineered a novel recombinant molecule able to adhere to the T. cruzi surface, termed scFv-10D8, that consists of a single-chain variable fragment (scFv) derived from mAb-10D8 that targets gp35/50. The synthetic gene encoding scFv-10D8 was cloned and fused to a 6×His tag and expressed in a prokaryotic expression system. Total periplasmic or 6xHis tag affinity-purified fractions of scFv-10D8 retained the capacity to bind to gp35/50, as shown by Western blot analyses. Pre-incubation of metacyclic trypomastigotes with scFv-10D8 showed a remarkable reduction in cell invasion capacity. Our results suggest that scFv-10D8 can be used in a paratransgenic approach to target parasites in insect vectors, avoiding dissemination of infective forms. Such advances in the development of this functional molecule will surely prompt the improvement of alternative strategies to control Chagas disease by targeting mammalian host stages.

Indexed as

Antibodies, ProtozoanAntigens, ProtozoanCell LineChagas DiseaseHeLa CellsHumansProtein EngineeringRecombinant ProteinsSingle-Chain AntibodiesTrypanosoma cruziAntibodies, ProtozoanAntigens, ProtozoanRecombinant ProteinsSingle-Chain Antibodies

Identifiers

PMID31618282
PMCPMC6795462

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.