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Carneiro FM, da Cruz AB, Maia MM, Taniwaki NN, Pereira IDS, Namiyama GM, Gava R, Hiramoto RM, Vicente B, Midlej V, Mariante RM, Pereira-Chioccola VL. Extracellular Vesicles from Leishmania (Leishmania) infantum Contribute in Stimulating Immune Response and Immunosuppression in Hosts with Visceral Leishmaniasis. Microorganisms 2024; 12:270. [PMID: 38399674 PMCID: PMC10892469 DOI: 10.3390/microorganisms12020270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/11/2024] [Accepted: 01/19/2024] [Indexed: 02/25/2024] Open
Abstract
Visceral leishmaniasis (VL) is a chronic systemic disease. In Brazil this infection is caused by Leishmania (Leishmania) infantum. Extracellular vesicles (EVs) released by Leishmania species have different functions like the modulation of host immune systems and inflammatory responses, among others. This study evaluated the participation of EVs from L. (L.) infantum (Leish-EVs) in recognition of the humoral and cellular immune response of hosts with VL. Promastigotes were cultivated in 199 medium and, in the log phase of growth, they were centrifuged, washed, resus-pended in RPMI medium, and incubated for 2 to 24 h, at 25 °C or 37 °C to release Leish-EVs. This dynamic was evaluated using transmission (TEM) and scanning (SEM) electron microscopies, as well as nanoparticle tracking analysis (NTA). The results suggested that parasite penetration in mammal macrophages requires more Leish-EVs than those living in insect vectors, since promastigotes incubated at 37 °C released more Leish-EVs than those incubated at 25 °C. Infected THP-1 cells produced high EV concentration (THP-1 cells-EVs) when compared with those from the control group. The same results were obtained when THP-1 cells were treated with Leish-EVs or a crude Leishmania antigen. These data indicated that host-EV concentrations could be used to distinguish infected from uninfected hosts. THP-1 cells treated with Leish-EVs expressed more IL-12 than control THP-1 cells, but were unable to express IFN-γ. These same cells highly expressed IL-10, which inhibited TNF-α and IL-6. Equally, THP-1 cells treated with Leish-EVs up-expressed miR-21-5p and miR-146a-5p. In conclusion, THP-1 cells treated with Leish-EVs highly expressed miR-21-5p and miR-146a-5p and caused the dysregulation of IL-10. Indirectly, these results suggest that high expression of these miRNAs species is caused by Leish-EVs. Consequently, this molecular via can contribute to immunosuppression causing enhanced immunopathology in infected hosts.
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Affiliation(s)
- Francieli Marinho Carneiro
- Centro de Parasitologia e Micologia, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (F.M.C.); (A.B.d.C.); (M.M.M.); (I.d.S.P.); (R.G.); (R.M.H.)
| | - Allecineia Bispo da Cruz
- Centro de Parasitologia e Micologia, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (F.M.C.); (A.B.d.C.); (M.M.M.); (I.d.S.P.); (R.G.); (R.M.H.)
| | - Marta Marques Maia
- Centro de Parasitologia e Micologia, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (F.M.C.); (A.B.d.C.); (M.M.M.); (I.d.S.P.); (R.G.); (R.M.H.)
| | - Noemi Nosomi Taniwaki
- Núcleo de Microscopia Eletrônica, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (N.N.T.); (G.M.N.)
| | - Ingrid de Siqueira Pereira
- Centro de Parasitologia e Micologia, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (F.M.C.); (A.B.d.C.); (M.M.M.); (I.d.S.P.); (R.G.); (R.M.H.)
- Núcleo de Microscopia Eletrônica, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (N.N.T.); (G.M.N.)
| | - Gislene Mitsue Namiyama
- Núcleo de Microscopia Eletrônica, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (N.N.T.); (G.M.N.)
| | - Ricardo Gava
- Centro de Parasitologia e Micologia, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (F.M.C.); (A.B.d.C.); (M.M.M.); (I.d.S.P.); (R.G.); (R.M.H.)
| | - Roberto Mitsuyoshi Hiramoto
- Centro de Parasitologia e Micologia, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (F.M.C.); (A.B.d.C.); (M.M.M.); (I.d.S.P.); (R.G.); (R.M.H.)
| | - Bruno Vicente
- Laboratório de Biologia Estrutural, Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (B.V.); (V.M.); (R.M.M.)
| | - Victor Midlej
- Laboratório de Biologia Estrutural, Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (B.V.); (V.M.); (R.M.M.)
| | - Rafael Meyer Mariante
- Laboratório de Biologia Estrutural, Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (B.V.); (V.M.); (R.M.M.)
| | - Vera Lucia Pereira-Chioccola
- Centro de Parasitologia e Micologia, Instituto Adolfo Lutz, Sao Paulo 01246-000, Brazil; (F.M.C.); (A.B.d.C.); (M.M.M.); (I.d.S.P.); (R.G.); (R.M.H.)
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Xiong Y, Lou P, Xu C, Han B, Liu J, Gao J. Emerging role of extracellular vesicles in veterinary practice: novel opportunities and potential challenges. Front Vet Sci 2024; 11:1335107. [PMID: 38332755 PMCID: PMC10850357 DOI: 10.3389/fvets.2024.1335107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 01/12/2024] [Indexed: 02/10/2024] Open
Abstract
Extracellular vesicles are nanoscale vesicles that transport signals between cells, mediating both physiological and pathological processes. EVs facilitate conserved intercellular communication. By transferring bioactive molecules between cells, EVs coordinate systemic responses, regulating homeostasis, immunity, and disease progression. Given their biological importance and involvement in pathogenesis, EVs show promise as biomarkers for veterinary diagnosis, and candidates for vaccine production, and treatment agents. Additionally, different treatment or engineering methods could be used to boost the capability of extracellular vesicles. Despite the emerging veterinary interest, EV research has been predominantly human-based. Critical knowledge gaps remain regarding isolation protocols, cargo loading mechanisms, in vivo biodistribution, and species-specific functions. Standardized methods for veterinary EV characterization and validation are lacking. Regulatory uncertainties impede veterinary clinical translation. Advances in fundamental EV biology and technology are needed to propel the veterinary field forward. This review introduces EVs from a veterinary perspective by introducing the latest studies, highlighting their potential while analyzing challenges to motivate expanded veterinary investigation and translation.
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Affiliation(s)
- Yindi Xiong
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Peng Lou
- NHC Key Laboratory of Transplant Engineering and Immunology, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Chuang Xu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Bo Han
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jingping Liu
- NHC Key Laboratory of Transplant Engineering and Immunology, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Jian Gao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, Beijing, China
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Tiberti N, Longoni SS, Combes V, Piubelli C. Host-Derived Extracellular Vesicles in Blood and Tissue Human Protozoan Infections. Microorganisms 2023; 11:2318. [PMID: 37764162 PMCID: PMC10536481 DOI: 10.3390/microorganisms11092318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023] Open
Abstract
Blood and tissue protozoan infections are responsible for an enormous burden in tropical and subtropical regions, even though they can also affect people living in high-income countries, mainly as a consequence of migration and travel. These pathologies are responsible for heavy socio-economic issues in endemic countries, where the lack of proper therapeutic interventions and effective vaccine strategies is still hampering their control. Moreover, the pathophysiological mechanisms associated with the establishment, progression and outcome of these infectious diseases are yet to be fully described. Among all the players, extracellular vesicles (EVs) have raised significant interest during the last decades due to their capacity to modulate inter-parasite and host-parasite interactions. In the present manuscript, we will review the state of the art of circulating host-derived EVs in clinical samples or in experimental models of human blood and tissue protozoan diseases (i.e., malaria, leishmaniasis, Chagas disease, human African trypanosomiasis and toxoplasmosis) to gain novel insights into the mechanisms of pathology underlying these conditions and to identify novel potential diagnostic markers.
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Affiliation(s)
- Natalia Tiberti
- Department of Infectious, Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, 37024 Negrar di Valpolicella, Italy; (S.S.L.); (C.P.)
| | - Silvia Stefania Longoni
- Department of Infectious, Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, 37024 Negrar di Valpolicella, Italy; (S.S.L.); (C.P.)
| | - Valéry Combes
- Microvesicles and Malaria Research Group, School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia;
| | - Chiara Piubelli
- Department of Infectious, Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, 37024 Negrar di Valpolicella, Italy; (S.S.L.); (C.P.)
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