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Barbero AM, Hernández Del Pino RE, Fuentes F, Barrionuevo P, Pasquinelli V. Platelets promote human macrophages-mediated macropinocytosis of Clostridioides difficile. Front Cell Infect Microbiol 2024; 13:1252509. [PMID: 38249298 PMCID: PMC10796631 DOI: 10.3389/fcimb.2023.1252509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 12/11/2023] [Indexed: 01/23/2024] Open
Abstract
Clostridioides difficile is the main causative agent of hospital-acquired diarrhea and the potentially lethal disease, C. difficile infection. The cornerstone of the current therapy is the use of antibiotics, which is not fully effective. The molecular mechanisms, inflammatory conditions and host-immune responses that could benefit the persistence or elimination of C. difficile remain unclear. Macrophages perform different ways of endocytosis as part of their immune surveillance functions and platelets, classically known for their coagulatory role, are also important modulators of the immune system. The aim of this study was to evaluate the endocytosis of vegetative C. difficile by human macrophages and the involvement of platelets in this process. Our results showed that both macrophages and platelets interact with live and heat-killed C. difficile. Furthermore, platelets form complexes with human monocytes in healthy donor's fresh blood and the presence of C. difficile increased these cell-cell interactions. Using flow cytometry and confocal microscopy, we show that macrophages can internalize C. difficile and that platelets improve this uptake. By using inhibitors of different endocytic pathways, we demonstrate that macropinocytosis is the route of entry of C. difficile into the cell. Taken together, our findings are the first evidence for the internalization of vegetative non-toxigenic and hypervirulent C. difficile by human macrophages and highlight the role of platelets in innate immunity during C. difficile infection. Deciphering the crosstalk of C. difficile with immune cells could provide new tools for understanding the pathogenesis of C. difficile infection and for the development of host-directed therapies.
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Affiliation(s)
- Angela María Barbero
- Centro de Investigaciones Básicas y Aplicadas (CIBA), Universidad Nacional del Noroeste de la Provincia de Buenos Aires (UNNOBA), Buenos Aires, Argentina
- Centro de Investigaciones y Transferencias del Noroeste de la Provincia de Buenos Aires (CIT NOBA), UNNOBA-Universidad Nacional de San Antonio de Areco (UNSAdA)- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Rodrigo Emanuel Hernández Del Pino
- Centro de Investigaciones Básicas y Aplicadas (CIBA), Universidad Nacional del Noroeste de la Provincia de Buenos Aires (UNNOBA), Buenos Aires, Argentina
- Centro de Investigaciones y Transferencias del Noroeste de la Provincia de Buenos Aires (CIT NOBA), UNNOBA-Universidad Nacional de San Antonio de Areco (UNSAdA)- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Federico Fuentes
- Instituto de Medicina Experimental (CONICET-Academia Nacional de Medicina), Buenos Aires, Argentina
| | - Paula Barrionuevo
- Instituto de Medicina Experimental (CONICET-Academia Nacional de Medicina), Buenos Aires, Argentina
| | - Virginia Pasquinelli
- Centro de Investigaciones Básicas y Aplicadas (CIBA), Universidad Nacional del Noroeste de la Provincia de Buenos Aires (UNNOBA), Buenos Aires, Argentina
- Centro de Investigaciones y Transferencias del Noroeste de la Provincia de Buenos Aires (CIT NOBA), UNNOBA-Universidad Nacional de San Antonio de Areco (UNSAdA)- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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Arias-Gómez B, Fonseca-Muñoz R, Alfaro-Alarcón A, Chacón-Díaz C, Moreno E, Rucavado A, Barquero-Calvo E. Platelet depletion does not alter the course of Brucella abortus infection in vivo. Microb Pathog 2022; 164:105458. [DOI: 10.1016/j.micpath.2022.105458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 01/18/2023]
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Bousoik E, Montazeri Aliabadi H. "Do We Know Jack" About JAK? A Closer Look at JAK/STAT Signaling Pathway. Front Oncol 2018; 8:287. [PMID: 30109213 PMCID: PMC6079274 DOI: 10.3389/fonc.2018.00287] [Citation(s) in RCA: 249] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Accepted: 07/09/2018] [Indexed: 12/14/2022] Open
Abstract
Janus tyrosine kinase (JAK) family of proteins have been identified as crucial proteins in signal transduction initiated by a wide range of membrane receptors. Among the proteins in this family JAK2 has been associated with important downstream proteins, including signal transducers and activators of transcription (STATs), which in turn regulate the expression of a variety of proteins involved in induction or prevention of apoptosis. Therefore, the JAK/STAT signaling axis plays a major role in the proliferation and survival of different cancer cells, and may even be involved in resistance mechanisms against molecularly targeted drugs. Despite extensive research focused on the protein structure and mechanisms of activation of JAKs, and signal transduction through these proteins, their importance in cancer initiation and progression seem to be underestimated. This manuscript is an attempt to highlight the role of JAK proteins in cancer biology, the most recent developments in targeting JAKs, and the central role they play in intracellular cross-talks with other signaling cascades.
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Affiliation(s)
- Emira Bousoik
- Department of Biomedical and Pharmaceutical Sciences, Center for Targeted Drug Delivery, School of Pharmacy, Chapman University, Irvine, CA, United States.,School of Pharmacy, Omar Al-Mukhtar University, Dèrna, Libya
| | - Hamidreza Montazeri Aliabadi
- Department of Biomedical and Pharmaceutical Sciences, Center for Targeted Drug Delivery, School of Pharmacy, Chapman University, Irvine, CA, United States
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Trotta A, Velásquez LN, Milillo MA, Delpino MV, Rodríguez AM, Landoni VI, Giambartolomei GH, Pozner RG, Barrionuevo P. Platelets Promote Brucella abortus Monocyte Invasion by Establishing Complexes With Monocytes. Front Immunol 2018; 9:1000. [PMID: 29867977 PMCID: PMC5949576 DOI: 10.3389/fimmu.2018.01000] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 04/23/2018] [Indexed: 01/18/2023] Open
Abstract
Brucellosis is an infectious disease elicited by bacteria of the genus Brucella. Platelets have been extensively described as mediators of hemostasis and responsible for maintaining vascular integrity. Nevertheless, they have been recently involved in the modulation of innate and adaptive immune responses. Although many interactions have been described between Brucella abortus and monocytes/macrophages, the role of platelets during monocyte/macrophage infection by these bacteria remained unknown. The aim of this study was to investigate the role of platelets in the immune response against B. abortus. We first focused on the possible interactions between B. abortus and platelets. Bacteria were able to directly interact with platelets. Moreover, this interaction triggered platelet activation, measured as fibrinogen binding and P-selectin expression. We further investigated whether platelets were involved in Brucella-mediated monocyte/macrophage early infection. The presence of platelets promoted the invasion of monocytes/macrophages by B. abortus. Moreover, platelets established complexes with infected monocytes/macrophages as a result of a carrier function elicited by platelets. We also evaluated the ability of platelets to modulate functional aspects of monocytes in the context of the infection. The presence of platelets during monocyte infection enhanced IL-1β, TNF-α, IL-8, and MCP-1 secretion while it inhibited the secretion of IL-10. At the same time, platelets increased the expression of CD54 (ICAM-1) and CD40. Furthermore, we showed that soluble factors released by B. abortus-activated platelets, such as soluble CD40L, platelet factor 4, platelet-activating factor, and thromboxane A2, were involved in CD54 induction. Overall, our results indicate that platelets can directly sense and react to B. abortus presence and modulate B. abortus-mediated infection of monocytes/macrophages increasing their pro-inflammatory capacity, which could promote the resolution of the infection.
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Affiliation(s)
- Aldana Trotta
- Instituto de Medicina Experimental (IMEX), CONICET, Academia Nacional de Medicina, Buenos Aires, Argentina
| | - Lis N Velásquez
- Instituto de Medicina Experimental (IMEX), CONICET, Academia Nacional de Medicina, Buenos Aires, Argentina
| | - M Ayelén Milillo
- Instituto de Medicina Experimental (IMEX), CONICET, Academia Nacional de Medicina, Buenos Aires, Argentina
| | - M Victoria Delpino
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ana M Rodríguez
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Verónica I Landoni
- Instituto de Medicina Experimental (IMEX), CONICET, Academia Nacional de Medicina, Buenos Aires, Argentina
| | - Guillermo H Giambartolomei
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Roberto G Pozner
- Instituto de Medicina Experimental (IMEX), CONICET, Academia Nacional de Medicina, Buenos Aires, Argentina
| | - Paula Barrionuevo
- Instituto de Medicina Experimental (IMEX), CONICET, Academia Nacional de Medicina, Buenos Aires, Argentina
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Borges AF, Morato CI, Gomes RS, Dorta ML, de Oliveira MAP, Ribeiro-Dias F. Platelet-activating factor increases reactive oxygen species-mediated microbicidal activity of human macrophages infected with Leishmania (Viannia) braziliensis. Pathog Dis 2017; 75:3983173. [DOI: 10.1093/femspd/ftx082] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 07/19/2017] [Indexed: 11/13/2022] Open
Affiliation(s)
- Arissa Felipe Borges
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal Goiás, Goiânia, Goiás, Rua 235 S/N, Setor Leste Universitário, Goiânia - GO 74605-050, Brazil
| | - Camila Imai Morato
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal Goiás, Goiânia, Goiás, Rua 235 S/N, Setor Leste Universitário, Goiânia - GO 74605-050, Brazil
| | - Rodrigo Saar Gomes
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal Goiás, Goiânia, Goiás, Rua 235 S/N, Setor Leste Universitário, Goiânia - GO 74605-050, Brazil
| | - Miriam Leandro Dorta
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal Goiás, Goiânia, Goiás, Rua 235 S/N, Setor Leste Universitário, Goiânia - GO 74605-050, Brazil
| | - Milton Adriano Pelli de Oliveira
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal Goiás, Goiânia, Goiás, Rua 235 S/N, Setor Leste Universitário, Goiânia - GO 74605-050, Brazil
| | - Fátima Ribeiro-Dias
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal Goiás, Goiânia, Goiás, Rua 235 S/N, Setor Leste Universitário, Goiânia - GO 74605-050, Brazil
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Brucella abortus: Current Research and Future Trends. CURRENT CLINICAL MICROBIOLOGY REPORTS 2017. [DOI: 10.1007/s40588-017-0052-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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