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Santana LN, Tavares LS, Dorvigny BM, Souza FDAL, Paiva BHDA, Evêncio-Neto J, Hounkonnou SGC, Silva AFB, Ramos MV, Lima-Filho JV. Anti-infective activity of Cratylia argentea lectin (CFL) against experimental infection with virulent Listeria monocytogenes in Swiss mice. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 94:153839. [PMID: 34781231 DOI: 10.1016/j.phymed.2021.153839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/06/2021] [Accepted: 10/27/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND The lectin from Cratylia argentea (CFL) is able to modulate the immune system response and is thus a potential phytotherapeutic substance. HYPOTHESIS/PURPOSE In this study, we investigated the role of CFL on control of bacterial infection caused by Listeria monocytogenes, the causative agent of human listeriosis. STUDY DESIGN Swiss mice were infected with L. monocytogenes and then treated with CFL. METHODS Adult Swiss mice weighing with 30-40 g were infected intraperitoneally with a bacterial suspension (0.2 ml; 1 × 107 CFU/ml). After 30 min, the mice were treated with CFL intravenously at concentrations of 0.1 or 10 mg/kg. Control mice received phosphate-buffered saline (PBS). The animals were euthanized 24 h after infection. RESULTS We observed that i.v. administration of CFL to Swiss mice did not cause acute toxicity, and reduced the leukocyte counts in the bloodstream 24 h after infection with virulent L. monocytogenes. There was a reduction in the bacterial burden within peritoneal macrophages after infection in CFL-treated mice. Accordingly, the bacterial counts in the bloodstream, spleen and liver also decreased in comparison with the PBS group. Histological damage in the spleen and liver was lower in mice that received CFL treatment. In vitro antimicrobial assays demonstrated that CFL does not inhibit the growth of L. monocytogenes. The mRNA expression of the anti-inflammatory cytokine IL-10 was enhanced with CFL treatment after infection. CONCLUSION The lectin from C. argentea (CFL) has immunomodulatory and anti-infective properties of pharmacological interest for control of infectious diseases.
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Affiliation(s)
- Lucas Nunes Santana
- Department of Biology, Microbiology and Immunology Laboratory, Federal Rural University of Pernambuco, Dom Manoel de Medeiros, s/n, B. Dois Irmãos, Recife, PE CEP 52171-900, Brazil
| | - Lethicia Souza Tavares
- Department of Biology, Microbiology and Immunology Laboratory, Federal Rural University of Pernambuco, Dom Manoel de Medeiros, s/n, B. Dois Irmãos, Recife, PE CEP 52171-900, Brazil
| | - Betty Mancebo Dorvigny
- Department of Biology, Microbiology and Immunology Laboratory, Federal Rural University of Pernambuco, Dom Manoel de Medeiros, s/n, B. Dois Irmãos, Recife, PE CEP 52171-900, Brazil
| | | | | | - Joaquim Evêncio-Neto
- Department of Morphology and Animal Physiology, Federal Rural University of Pernambuco, Recife, PE, Brazil
| | | | | | - Márcio Viana Ramos
- Department of Biochemistry and Molecular Biology, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Jose Vitor Lima-Filho
- Department of Biology, Microbiology and Immunology Laboratory, Federal Rural University of Pernambuco, Dom Manoel de Medeiros, s/n, B. Dois Irmãos, Recife, PE CEP 52171-900, Brazil.
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Cavada BS, Osterne VJS, Pinto-Junior VR, Nascimento KS. ConBr, the Lectin from Canavalia brasiliensis Mart. Seeds: Forty Years of Research. Curr Protein Pept Sci 2019; 20:600-613. [DOI: 10.2174/1389203720666190104123210] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 11/30/2018] [Accepted: 12/29/2018] [Indexed: 12/16/2022]
Abstract
Lectins are defined as proteins or glycoproteins capable of specific and reversible binding to
carbohydrates. Inside this group of proteins, the most well-studied lectins belong to the Leguminosae
family, and inside this family, the Diocleinae subtribe includes the most characterized lectin Concanavalin
A (ConA), as well as ConBr, the lectin from Canavalia brasiliensis, the subject of this review.
Since 1979, several studies have been published in the literature regarding this lectin, from its isolation
and characterization to its several biological activities. This year, 2019, will mark 40 years since researchers
have begun to study ConBr and 100 years since the discovery of ConA, making 2019 a momentous
year for lectinology. Owing to the abundance of studies involving ConBr, this review will
focus on ConBr’s purification, physicochemical properties, functional and structural analyses, biological
activities and biotechnological applications. This will give researchers a broad glimpse into the
potential of this lectin, as well as it characteristics, as we look ahead to its expanding applications in
glycomics and biotechnology.
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Affiliation(s)
- Benildo Sousa Cavada
- BioMol-Lab, Department of Biochemistry and Molecular Biology, Federal University of Ceara, Ceara, Brazil
| | | | - Vanir Reis Pinto-Junior
- BioMol-Lab, Department of Biochemistry and Molecular Biology, Federal University of Ceara, Ceara, Brazil
| | - Kyria Santiago Nascimento
- BioMol-Lab, Department of Biochemistry and Molecular Biology, Federal University of Ceara, Ceara, Brazil
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