Cited by 123Inflammasome and immune disordersTrypanosoma species research and implicationsImmune Response and Inflammation

NLRP3 controls Trypanosoma cruzi infection through a caspase-1-dependent IL-1R-independent NO production

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Gonçalves, Virginia M., Matteucci, Kely C., Buzzo, Carina L., Miollo, Bruna H., Ferrante, Danny, Torrecilhas, Ana C., Rodrigues, Mauricio M., Alvarez, Jose M. +1 more·2013·PLoS Neglected Tropical Diseases

Abstract

Trypanosoma cruzi (T. cruzi) is an intracellular protozoan parasite and the etiological agent of Chagas disease, a chronic infectious illness that affects millions of people worldwide. Although the role of TLR and Nod1 in the control of T. cruzi infection is well-established, the involvement of inflammasomes remains to be elucidated. Herein, we demonstrate for the first time that T. cruzi infection induces IL-1β production in an NLRP3- and caspase-1-dependent manner. Cathepsin B appears to be required for NLRP3 activation in response to infection with T. cruzi, as pharmacological inhibition of cathepsin B abrogates IL-1β secretion. NLRP3(-/-) and caspase1(-/-) mice exhibited high numbers of T. cruzi parasites, with a magnitude of peak parasitemia comparable to MyD88(-/-) and iNOS(-/-) mice (which are susceptible models for T. cruzi infection), indicating the involvement of NLRP3 inflammasome in the control of the acute phase of T. cruzi infection. Although the inflammatory cytokines IL-6 and IFN-γ were found in spleen cells from NLRP3(-/-) and caspase1(-/-) mice infected with T. cruzi, these mice exhibited severe defects in nitric oxide (NO) production and an impairment in macrophage-mediated parasite killing. Interestingly, neutralization of IL-1β and IL-18, and IL-1R genetic deficiency demonstrate that these cytokines have a minor effect on NO secretion and the capacity of macrophages to control T. cruzi infection. In contrast, inhibition of caspase-1 with z-YVAD-fmk abrogated NO production by WT and MyD88(-/-) macrophages and rendered them as susceptible to T. cruzi infection as NLRP3(-/-) and caspase-1(-/-) macrophages. Taken together, our results demonstrate a role for the NLRP3 inflammasome in the control of T. cruzi infection and identify NLRP3-mediated, caspase-1-dependent and IL-1R-independent NO production as a novel effector mechanism for these innate receptors.

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Crossref · 10.1371/journal.pntd.0002469

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  • The master regulator Caspase is associated mainly with regulating the reduction of the load of intracellular parasites, induction of nitric oxide production, increasing the level of CD4 and CD8+ T-cells, secretion of IFNγ, and control of trypanosome infection by macrophages.

    “Remarkably, the master regulator Caspase, which is a family of protease enzymes, is associated mainly with regulating the reduction of the load of intracellular parasites, induction of nitric oxide production, increasing the level of CD4 and CD8+ T-cells, secretion of IFNγ, and control of trypanosome infection by macrophages (Gonçalves et al., 2013).”

    From Identification of Candidate Signature Genes and Key Regulators Associated With Trypanotolerance in the Sheko Breed (2019) · cites this paper as Gonçalves et al., 2013

    The Results section ('NLRP3-dependent NO secretion is critical for T. cruzi killing by macrophages'; page not supplied) reports that caspase-1-deficient macrophages produce less NO and harbor more intracellular parasites than wild-type macrophages. The paper does not show that caspase-1 increases CD4+ or CD8+ T-cell levels. Its Results on acute infection report substantial IFN-γ secretion even in caspase-1-deficient mice, although less than in wild-type mice, so IFN-γ is not established as the principal mechanism described in the claim. (LLM, conf=0.88)

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Authors
Gonçalves, V. M., Matteucci, K. C., Buzzo, C. L., Miollo, B. H., Ferrante, D., Torrecilhas, A. C., Rodrigues, M. M., Alvarez, J. M., & Bortoluci, K. R.
Affiliations
  • Universidade Federal de São Paulo (BR)
  • Instituto de Ciências Ambientais, Químicas e Farmacêuticas (BR)
Corresponding author
Bortoluci, Karina R.
Venue
PLoS Neglected Tropical Diseases
Published
2013-10-03
Volume
7
Issue
10
Pages
e2469
ISSN
  • 1935-2727 (ISSN-L)
  • 1935-2735
OpenAlex
W2140577495
Cited by
123
References
68
Citations by year
2026: 4 · 2025: 7 · 2024: 4 · 2023: 4 · 2022: 7 · 2021: 5 · 2020: 15 · 2019: 14 · 2018: 17 · 2017: 12 · 2016: 14 · 2015: 6 · 2014: 14
FWCI
5.08
Type
journal article
Language
en
Open access
Locations
  • PLoS neglected tropical diseases (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
  • Americanae (AECID Library) (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Funders
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (08/50958-8)
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
  • Health Sciences › Medicine › Epidemiology › Trypanosoma species research and implications
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
Trypanosoma cruzi, Chagas disease, NLRP3 inflammasome, caspase-1, nitric oxide production, IL-1β, cathepsin B, innate immunity, MyD88, IL-18, parasitemia control
MeSH terms
NLR Family, Pyrin Domain-Containing 3 Protein, Animals, Carrier Proteins, Disease Models, Animal, Female, Gene Expression Regulation, Nitric Oxide, Trypanosoma cruzi, Chagas Disease, Mice, Knockout, Caspase 1, Mice, Interleukin-1beta, Host-Pathogen Interactions

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