Evidence map›Paper›PMID 33789603›Full record

ArticleBMC microbiology2021

GroEL protein of the Leptospira spp. interacts with host proteins and induces cytokines secretion on macrophages.

Joana Dias Ho, Luiz Eduardo Massao Takara, Denize Monaris, Aline Patrícia Gonçalves, Antonio Francisco Souza-Filho, Gisele Oliveira de Souza, Marcos Bryan Heinemann, Paulo Lee Ho, Patrícia Antonia Estima Abreu

Open access · goldAbstract read
In one paragraph

Article in BMC microbiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.1field-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

7 citing papers in PubMed, 14 citations in OpenAlex.

  1. Article
  2. Review
  3. Proteomic analysis of exosomes fromFrontiers in immunology · 2025
    Article
  4. Computational identification of natural inhibitors targeting GroEL inFrontiers in cellular and infection microbiology · 2025
    Article
  5. Molecular Identification and Bioinformatics Analysis ofPathogens (Basel, Switzerland) · 2024
    Article
  6. Article
  7. The structure ofFrontiers in immunology · 2023
    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

9 authors at 2 institutions in 1 country.

Joana Dias Ho *Laboratory of Bacteriology, Butantan Institute, São Paulo, Brazil.
Luiz Eduardo Massao Takara *Laboratory of Bacteriology, Butantan Institute, São Paulo, Brazil.
Denize MonarisLaboratory of Bacteriology, Butantan Institute, São Paulo, Brazil.
Aline Patrícia GonçalvesLaboratory of Bacteriology, Butantan Institute, São Paulo, Brazil.
Antonio Francisco Souza-FilhoLaboratory of Bacterial Zoonosis, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil.
Gisele Oliveira de SouzaLaboratory of Bacterial Zoonosis, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil.
Marcos Bryan HeinemannLaboratory of Bacterial Zoonosis, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil.
Paulo Lee HoBioindustrial Division, Butantan Institute, São Paulo, Brazil.
Patrícia Antonia Estima AbreuLaboratory of Bacteriology, Butantan Institute, São Paulo, Brazil. patricia.aniz@butantan.gov.br.
Instituto Butantan · BRUniversidade de São Paulo · BR

Funding

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior 001Fundação de Amparo à Pesquisa do Estado de São Paulo FAPESP 2010/51215-9, 2019/00546-0Fundação de Amparo à Pesquisa do Estado de São Paulo FAPESP 2019/09804-1
6 · The paper itself

Abstract

backgroundLeptospirosis is a zoonotic disease caused by infection with spirochetes from Leptospira genus. It has been classified into at least 17 pathogenic species, with more than 250 serologic variants. This wide distribution may be a result of leptospiral ability to colonize the renal tubules of mammalian hosts, including humans, wildlife, and many domesticated animals. Previous studies showed that the expression of proteins belonging to the microbial heat shock protein (HSP) family is upregulated during infection and also during various stress stimuli. Several proteins of this family are known to have important roles in the infectious processes in other bacteria, but the role of HSPs in Leptospira spp. is poorly understood. In this study, we have evaluated the capacity of the protein GroEL, a member of HSP family, of interacting with host proteins and of stimulating the production of cytokines by macrophages.

resultsThe binding experiments demonstrated that the recombinant GroEL protein showed interaction with several host components in a dose-dependent manner. It was also observed that GroEL is a surface protein, and it is secreted extracellularly. Moreover, two cytokines (tumor necrosis factor-α and interleukin-6) were produced when macrophages cells were stimulated with this protein.

conclusionsOur findings showed that GroEL protein may contribute to the adhesion of leptospires to host tissues and stimulate the production of proinflammatory cytokines during infection. These features might indicate an important role of GroEL in the pathogen-host interaction in the leptospirosis.

Indexed as

Chaperonin 60CytokinesHost-Pathogen InteractionsLeptospiraMacrophagesChaperonin 60CytokinesChaperonin 60GroELHSP60J774.1 cellsLeptospiraLeptospirosisMoonlighting protein

Identifiers

PMID33789603
PMCPMC8011160
OpenAlexW3145415757

What OpenQuestion holds

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Registered trials

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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.