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Tavares LS, Mancebo BD, Santana LN, Adelson do Nascimento Silva A, Silva RLDO, Benko-Iseppon AM, Ramos MV, Monteiro do Nascimento CT, Grangeiro TB, Sousa JS, Mota RA, Júnior VADS, Lima-Filho JV. Recombinant osmotin inclusion bodies from Calotropis procera produced in E. coli BL21(DE3) prevent acute inflammation in a mouse model of listeriosis. Phytomedicine 2022; 102:154186. [PMID: 35617890 DOI: 10.1016/j.phymed.2022.154186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 05/11/2022] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND The osmotin from the medicinal plant Calotropis procera (CpOsm) has characteristics similar to adiponectin, a human protein with immunoregulatory actions. PURPOSE This study aimed to investigate whether recombinant osmotin inclusion bodies from C. procera (IB/rCpOsm) produced in E. coli BL21(DE3) can prevent infection-induced inflammation. A virulent strain of Listeria monocytogenes was used as an infection model. METHODS Cells of E. coli BL21(DE3) carrying the plasmid pET303-CpOsm were used to express the recombinant osmotin, which accumulated at reasonable levels as inclusion bodies (IB/rCpOsm). IB/rCpOsm were purified from induced cells and SDS-polyacrylamide gel electrophoresis followed by mass spectrometry analyses confirmed the identity of the major protein band (23 kDa apparent molecular mass) as CpOsm. Peritoneal macrophages (pMØ) from Swiss mice were cultured with IB/rCpOsm (1 or 10 µg/ml) in 96-well plates and then infected with L. monocytogenes. IB/rCpOsm (0.1, 1 or 10 mg/kg) was also administered intravenously to Swiss mice, which were then infected intraperitoneally with L. monocytogenes. RESULTS Pretreatment of the pMØ with IB/rCpOsm significantly increased cell viability after infection and reduced the intracellular bacterial load. The infiltration of neutrophils into the peritoneal cavity of mice pretreated with IB/rCpOsm at 10 mg/kg (but not 0.1 and 1 mg/kg) was reduced after infection. In these mice, the bacterial load was high in the peritoneal fluid and the liver, but histological damage was discrete. The treatments with IB/rCpOsm at 10 mg/kg significantly increased the expression of the anti-inflammatory cytokine IL-10. CONCLUSION This study shows that recombinant osmotin inclusion bodies from C. procera were bioactive and prompted anti-inflammatory actions at therapeutic dosages in the L. monocytogenes infection model.
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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 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] [What about the content of this article? (0)] [Affiliation(s)] [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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Dorvigny BM, Tavares LS, de Almeida IA, Santana LN, de Souza Silva E, de Souza JKU, Soares AF, da Silva Júnior VA, Lima-Filho JV. Antiinflammatory and antiinfective effect of caffeine in a mouse model of disseminated salmonellosis. Phytother Res 2021; 36:1652-1663. [PMID: 34910341 DOI: 10.1002/ptr.7349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/25/2021] [Accepted: 11/27/2021] [Indexed: 11/09/2022]
Abstract
Caffeine has been reported for its antiinflammatory properties by stimulating phagocytosis. In this study, we investigated the antiinflammatory and antiinfective potential of caffeine in murine macrophage cell cultures and Swiss mice infected with virulent Salmonella enterica serotype typhimurium. Peritoneal macrophages (pMØ) were treated with caffeine on 96-well plates for 24 hr and then infected with Salmonella for 4 hr. In another experiment, the pMØ were first infected with the bacterium for 4 hr and then treated with caffeine for 24 hr. In addition, Swiss mice were inoculated, intraperitoneally, with S. typhimurium and then received caffeine intravenously. Control groups received phosphate-buffered saline (PBS) or dexamethasone. We found that treatments with caffeine increased the macrophage cell viability and reduced the intracellular bacterial load. The administration of caffeine to Swiss mice reduced the infiltration of leukocytes into the peritoneal cavity after the bacterial challenge. Furthermore, the bacterial burdens in the peritoneal fluid, bloodstream, spleen, and liver were decreased by caffeine treatment. The expression levels of tumor necrosis factor-alpha (TNF-α), interleukin-1β (IL-1β), IL-6, and inducible nitric oxide synthase (iNOs) were down-regulated after infection in caffeine-treated mice. We can conclude that caffeine has both antiinflammatory and antiinfective properties that can be useful for management of bacterial infections along with antibiotics.
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Affiliation(s)
| | | | | | - Lucas Nunes Santana
- Department of Biology, Federal Rural University of Pernambuco, Recife, Brazil
| | | | | | - Anísio Francisco Soares
- Department of Animal Morphology and Physiology, Federal Rural University of Pernambuco, Recife, Brazil
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de Alcântara Almeida I, Mancebo Dorvigny B, Souza Tavares L, Nunes Santana L, Vitor Lima-Filho J. Anti-inflammatory activity of caffeine (1,3,7-trimethylxanthine) after experimental challenge with virulent Listeria monocytogenes in Swiss mice. Int Immunopharmacol 2021; 100:108090. [PMID: 34507108 DOI: 10.1016/j.intimp.2021.108090] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/28/2021] [Accepted: 08/20/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Immunomodulatory therapies are claimed to enhance antimicrobial immunity and counterbalance antimicrobial resistance mechanisms of pathogenic bacteria. PURPOSE To investigate whether caffeine can be useful for control of inflammation derived from experimental systemic infection with Listeria monocytogenes. METHODS Peritoneal macrophages (pMØ) from Swiss mice were cultured with caffeine in 96-well plates, and then infected with virulent L. monocytogenes 619. In another experiment, the pMØ were first infected with the bacterium and then treated with caffeine. Swiss mice were inoculated intraperitoneally with L. monocytogenes and then treated intravenously with caffeine (0.05; 0.5 or 5 mg/Kg). RESULTS Caffeine did not exert direct antibacterial activity in vitro against L. monocytogenes. Macrophages exposed to caffeine before or after infection with L. monocytogenes had increased cell viability, although the intracellular bacterial loads were similar to the control groups. Caffeine treatments of Swiss mice reduced leukocyte infiltration into the peritoneal cavity after L. monocytogenes infection. However, the bacterial burden was reduced in the spleen and liver. The mRNA expressions of IL-1β, IL-6 and the enzyme inducible nitric oxide synthase (iNOS) were reduced whereas IL-10 was increased. CONCLUSION Caffeine has an anti-infectious potential and ameliorated infection-derived inflammation following experimental infection with L. monocytogenes.
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Affiliation(s)
| | | | | | - Lucas Nunes Santana
- Department of Biology, Federal Rural University of Pernambuco, Recife-PE, Brazil
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Queiroga FR, Marques-Santos LF, Hégaret H, Sassi R, Farias ND, Santana LN, da Silva PM. Effects of cyanobacteria Synechocystis spp. in the host-parasite model Crassostrea gasar-Perkinsus marinus. Aquat Toxicol 2017; 187:100-107. [PMID: 28407513 DOI: 10.1016/j.aquatox.2017.03.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 03/18/2017] [Accepted: 03/24/2017] [Indexed: 06/07/2023]
Abstract
Perkinsosis is a disease caused by protozoan parasites from the Perkinsus genus. In Brazil, two species, P. beihaiensis and P. marinus, are frequently found infecting native oysters (Crassostrea gasar and C. rhizophorae) from cultured and wild populations in several states of the Northeast region. The impacts of this disease in bivalves from Brazil, as well as the interactions with environmental factors, are poorly studied. In the present work, we evaluated the in vitro effects of the cyanobacteria Synechocystis spp. on trophozoites of P. marinus and haemocytes of C. gasar. Four cyanobacteria strains isolated from the Northeast Brazilian coast were used as whole cultures (WCs) and extracellular products (ECPs). Trophozoites of P. marinus were exposed for short (4h) and long (48h and 7days, the latter only for ECPs) periods, while haemocytes were exposed for a short period (4h). Cellular and immune parameters, i.e. cell viability, cell count, reactive oxygen species production (ROS) and phagocytosis of inert (latex beads) and biological particles (zymosan and trophozoites of P. marinus) were measured by flow cytometry. The viability of P. marinus trophozoites was improved in response to WCs of Synechocystis spp., which could be a beneficial effect of the cyanobacteria providing nutrients and reducing reactive oxygen species. Long-term exposure of trophozoites to ECPs of cyanobacteria did not modify in vitro cell proliferation nor viability. In contrast, C. gasar haemocytes showed a reduction in cell viability when exposed to WCs, but not to ECPs. However, ROS production was not altered. Haemocyte ability to engulf latex particles was reduced when exposed mainly to ECPs of cyanobacteria; while neither the WCs nor the ECPs modified phagocytosis of the biological particles, zymosan and P. marinus. Our results suggest a negative effect of cyanobacteria from the Synechocystis genus on host immune cells, in contrast to a more beneficial effect on the parasite cell, which could together disrupt the balance of the host-parasite interaction and make oysters more susceptible to P. marinus as well as opportunistic infections.
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Affiliation(s)
- Fernando Ramos Queiroga
- Laboratório de Imunologia e Patologia de Invertebrados (LABIPI), Departamento de Biologia Molecular, Universidade Federal da Paraíba, 58051-900, João Pessoa, Paraíba, Brazil
| | - Luis Fernando Marques-Santos
- Laboratório de Biologia Celular e do Desenvolvimento (LABID), Departamento de Biologia Molecular, Universidade Federal da Paraíba, 58051-900, João Pessoa, Paraíba, Brazil
| | - Hélène Hégaret
- Laboratoire des Sciences de l'Environnement Marin (LEMAR), UMR 6539 CNRS UBO IRD IFREMER, Institut Universitaire Européen de la Mer, Technopôle Brest-Iroise, 29280, Plouzané, France
| | - Roberto Sassi
- Laboratório de Ambientes Recifais e Biotecnologia de Microalgas (LARBIM), Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, 58051-900, João Pessoa, Paraíba, Brazil
| | - Natanael Dantas Farias
- Laboratório de Imunologia e Patologia de Invertebrados (LABIPI), Departamento de Biologia Molecular, Universidade Federal da Paraíba, 58051-900, João Pessoa, Paraíba, Brazil
| | - Lucas Nunes Santana
- Laboratório de Imunologia e Patologia de Invertebrados (LABIPI), Departamento de Biologia Molecular, Universidade Federal da Paraíba, 58051-900, João Pessoa, Paraíba, Brazil
| | - Patricia Mirella da Silva
- Laboratório de Imunologia e Patologia de Invertebrados (LABIPI), Departamento de Biologia Molecular, Universidade Federal da Paraíba, 58051-900, João Pessoa, Paraíba, Brazil.
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