1
|
Finnegan D, Mechoud MA, FitzGerald JA, Beresford T, Mathur H, Cotter PD, Loscher C. Novel Fermentates Can Enhance Key Immune Responses Associated with Viral Immunity. Nutrients 2024; 16:1212. [PMID: 38674902 PMCID: PMC11053696 DOI: 10.3390/nu16081212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Fermented foods have long been known to have immunomodulatory capabilities, and fermentates derived from the lactic acid bacteria of dairy products can modulate the immune system. We have used skimmed milk powder to generate novel fermentates using Lb. helveticus strains SC234 and SC232 and we demonstrate here that these fermentates can enhance key immune mechanisms that are critical to the immune response to viruses. We show that our novel fermentates, SC234 and SC232, can positively impact on cytokine and chemokine secretion, nitric oxide (NO) production, cell surface marker expression, and phagocytosis in macrophage models. We demonstrate that the fermentates SC234 and SC232 increase the secretion of cytokines IL-1β, IL-6, TNF-α, IL-27, and IL-10; promote an M1 pro-inflammatory phenotype for viral immunity via NO induction; decrease chemokine expression of Monocyte Chemoattractant Protein (MCP); increase cell surface marker expression; and enhance phagocytosis in comparison to their starting material. These data suggest that these novel fermentates have potential as novel functional food ingredients for the treatment, management, and control of viral infection.
Collapse
Affiliation(s)
- Dearbhla Finnegan
- Food for Health Ireland, Science Centre South (S2.79), University College Dublin, Dublin 4, Ireland; (D.F.); (M.A.M.); (J.A.F.); (T.B.); (H.M.); (P.D.C.)
- School of Biotechnology, Faculty of Science, Glasnevin Campus, Dublin City University, D09 DX63 Dublin, Ireland
| | - Monica A. Mechoud
- Food for Health Ireland, Science Centre South (S2.79), University College Dublin, Dublin 4, Ireland; (D.F.); (M.A.M.); (J.A.F.); (T.B.); (H.M.); (P.D.C.)
- Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Co. Cork, Ireland
| | - Jamie A. FitzGerald
- Food for Health Ireland, Science Centre South (S2.79), University College Dublin, Dublin 4, Ireland; (D.F.); (M.A.M.); (J.A.F.); (T.B.); (H.M.); (P.D.C.)
- College of Health and Agricultural Sciences, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland
| | - Tom Beresford
- Food for Health Ireland, Science Centre South (S2.79), University College Dublin, Dublin 4, Ireland; (D.F.); (M.A.M.); (J.A.F.); (T.B.); (H.M.); (P.D.C.)
- Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Co. Cork, Ireland
| | - Harsh Mathur
- Food for Health Ireland, Science Centre South (S2.79), University College Dublin, Dublin 4, Ireland; (D.F.); (M.A.M.); (J.A.F.); (T.B.); (H.M.); (P.D.C.)
- Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Co. Cork, Ireland
| | - Paul D. Cotter
- Food for Health Ireland, Science Centre South (S2.79), University College Dublin, Dublin 4, Ireland; (D.F.); (M.A.M.); (J.A.F.); (T.B.); (H.M.); (P.D.C.)
- Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Co. Cork, Ireland
- APC Microbiome Ireland, Biosciences Institute, Biosciences Research Institute, University College Cork, T12 R229 Cork, Ireland
- VistaMilk, Teagasc, Moorepark, Shanacloon, Fermoy, P61 C996 Co. Cork, Ireland
| | - Christine Loscher
- Food for Health Ireland, Science Centre South (S2.79), University College Dublin, Dublin 4, Ireland; (D.F.); (M.A.M.); (J.A.F.); (T.B.); (H.M.); (P.D.C.)
- School of Biotechnology, Faculty of Science, Glasnevin Campus, Dublin City University, D09 DX63 Dublin, Ireland
| |
Collapse
|
2
|
Djurkovic MA, Leavitt CG, Arnett E, Kriachun V, Martínez-Sobrido L, Titone R, Sherwood LJ, Hayhurst A, Schlesinger LS, Shtanko O. Ebola Virus Uses Tunneling Nanotubes as an Alternate Route of Dissemination. J Infect Dis 2023; 228:S522-S535. [PMID: 37723997 PMCID: PMC10651192 DOI: 10.1093/infdis/jiad400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 09/05/2023] [Accepted: 09/12/2023] [Indexed: 09/20/2023] Open
Abstract
Ebola virus (EBOV) disease is marked by rapid virus replication and spread. EBOV enters the cell by macropinocytosis and replicates in the cytoplasm, and nascent virions egress from the cell surface to infect neighboring cells. Here, we show that EBOV uses an alternate route to disseminate: tunneling nanotubes (TNTs). TNTs, an actin-based long-range intercellular communication system, allows for direct exchange of cytosolic constituents between cells. Using live, scanning electron, and high-resolution quantitative 3-dimensional microscopy, we show that EBOV infection of primary human cells results in the enhanced formation of TNTs containing viral nucleocapsids. TNTs promote the intercellular transfer of nucleocapsids in the absence of live virus, and virus could replicate in cells devoid of entry factors after initial stall. Our studies suggest an alternate model of EBOV dissemination within the host, laying the groundwork for further investigations into the pathogenesis of filoviruses and, importantly, stimulating new areas of antiviral design.
Collapse
Affiliation(s)
- Marija A Djurkovic
- Host-Pathogen Interactions, Texas Biomedical Research Institute, San Antonio
| | - Carson G Leavitt
- Host-Pathogen Interactions, Texas Biomedical Research Institute, San Antonio
| | - Eusondia Arnett
- Host-Pathogen Interactions, Texas Biomedical Research Institute, San Antonio
| | - Valeriia Kriachun
- Host-Pathogen Interactions, Texas Biomedical Research Institute, San Antonio
| | - Luis Martínez-Sobrido
- Disease Prevention and Intervention, Texas Biomedical Research Institute, San Antonio
| | - Rossella Titone
- Host-Pathogen Interactions, Texas Biomedical Research Institute, San Antonio
| | - Laura J Sherwood
- Disease Prevention and Intervention, Texas Biomedical Research Institute, San Antonio
| | - Andrew Hayhurst
- Disease Prevention and Intervention, Texas Biomedical Research Institute, San Antonio
| | - Larry S Schlesinger
- Host-Pathogen Interactions, Texas Biomedical Research Institute, San Antonio
| | - Olena Shtanko
- Host-Pathogen Interactions, Texas Biomedical Research Institute, San Antonio
- Disease Prevention and Intervention, Texas Biomedical Research Institute, San Antonio
| |
Collapse
|
3
|
Rogers KJ, Richards PT, Zacharias ZR, Stunz LL, Vijay R, Butler NS, Legge KL, Bishop GA, Maury W. CD40 Signaling in Mice Elicits a Broad Antiviral Response Early during Acute Infection with RNA Viruses. Viruses 2023; 15:1353. [PMID: 37376652 PMCID: PMC10305536 DOI: 10.3390/v15061353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
Macrophages are critical in the pathogenesis of a diverse group of viral pathogens, both as targets of infection and for eliciting primary defense mechanisms. Our prior in vitro work identified that CD40 signaling in murine peritoneal macrophages protects against several RNA viruses by eliciting IL-12, which stimulates the production of interferon gamma (IFN-γ). Here, we examine the role of CD40 signaling in vivo. We show that CD40 signaling is a critical, but currently poorly appreciated, component of the innate immune response using two distinct infectious agents: mouse-adapted influenza A virus (IAV, PR8) and recombinant VSV encoding the Ebola virus glycoprotein (rVSV-EBOV GP). We find that stimulation of CD40 signaling decreases early IAV titers, whereas loss of CD40 elevated early titers and compromised lung function by day 3 of infection. Protection conferred by CD40 signaling against IAV is dependent on IFN-γ production, consistent with our in vitro studies. Using rVSV-EBOV GP that serves as a low-biocontainment model of filovirus infection, we demonstrate that macrophages are a CD40-expressing population critical for protection within the peritoneum and T-cells are the key source of CD40L (CD154). These experiments reveal the in vivo mechanisms by which CD40 signaling in macrophages regulates the early host responses to RNA virus infection and highlight how CD40 agonists currently under investigation for clinical use may function as a novel class of broad antiviral treatments.
Collapse
Affiliation(s)
- Kai J. Rogers
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA 52242, USA; (K.J.R.); (P.T.R.); (L.L.S.); (R.V.); (N.S.B.); (K.L.L.); (G.A.B.)
- Department of Pathology, University of Iowa, Iowa City, IA 52242, USA;
| | - Paige T. Richards
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA 52242, USA; (K.J.R.); (P.T.R.); (L.L.S.); (R.V.); (N.S.B.); (K.L.L.); (G.A.B.)
| | - Zeb R. Zacharias
- Department of Pathology, University of Iowa, Iowa City, IA 52242, USA;
| | - Laura L. Stunz
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA 52242, USA; (K.J.R.); (P.T.R.); (L.L.S.); (R.V.); (N.S.B.); (K.L.L.); (G.A.B.)
| | - Rahul Vijay
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA 52242, USA; (K.J.R.); (P.T.R.); (L.L.S.); (R.V.); (N.S.B.); (K.L.L.); (G.A.B.)
| | - Noah S. Butler
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA 52242, USA; (K.J.R.); (P.T.R.); (L.L.S.); (R.V.); (N.S.B.); (K.L.L.); (G.A.B.)
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA 52242, USA
| | - Kevin L. Legge
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA 52242, USA; (K.J.R.); (P.T.R.); (L.L.S.); (R.V.); (N.S.B.); (K.L.L.); (G.A.B.)
- Department of Pathology, University of Iowa, Iowa City, IA 52242, USA;
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA 52242, USA
| | - Gail A. Bishop
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA 52242, USA; (K.J.R.); (P.T.R.); (L.L.S.); (R.V.); (N.S.B.); (K.L.L.); (G.A.B.)
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA 52242, USA
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52242, USA
- Iowa City VA Health Care System, Iowa City, IA 52246, USA
| | - Wendy Maury
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA 52242, USA; (K.J.R.); (P.T.R.); (L.L.S.); (R.V.); (N.S.B.); (K.L.L.); (G.A.B.)
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA 52242, USA
| |
Collapse
|
4
|
Wanninger TG, Millian DE, Saldarriaga OA, Maruyama J, Saito T, Reyna RA, Taniguchi S, Arroyave E, Connolly ME, Stevenson HL, Paessler S. Macrophage infection, activation, and histopathological findings in ebolavirus infection. Front Cell Infect Microbiol 2022; 12:1023557. [PMID: 36310868 PMCID: PMC9597316 DOI: 10.3389/fcimb.2022.1023557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 09/15/2022] [Indexed: 12/05/2022] Open
Abstract
Macrophages contribute to Ebola virus disease through their susceptibility to direct infection, their multi-faceted response to ebolaviruses, and their association with pathological findings in tissues throughout the body. Viral attachment and entry factors, as well as the more recently described influence of cell polarization, shape macrophage susceptibility to direct infection. Moreover, the study of Toll-like receptor 4 and the RIG-I-like receptor pathway in the macrophage response to ebolaviruses highlight important immune signaling pathways contributing to the breadth of macrophage responses. Lastly, the deep histopathological catalogue of macrophage involvement across numerous tissues during infection has been enriched by descriptions of tissues involved in sequelae following acute infection, including: the eye, joints, and the nervous system. Building upon this knowledge base, future opportunities include characterization of macrophage phenotypes beneficial or deleterious to survival, delineation of the specific roles macrophages play in pathological lesion development in affected tissues, and the creation of macrophage-specific therapeutics enhancing the beneficial activities and reducing the deleterious contributions of macrophages to the outcome of Ebola virus disease.
Collapse
Affiliation(s)
- Timothy G. Wanninger
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, United States
| | - Daniel E. Millian
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States
| | - Omar A. Saldarriaga
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States
| | - Junki Maruyama
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States
| | - Takeshi Saito
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States
| | - Rachel A. Reyna
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States
| | - Satoshi Taniguchi
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States
| | - Esteban Arroyave
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States
| | - Melanie E. Connolly
- Department of Surgery, University of Texas Medical Branch, Galveston, TX, United States
| | - Heather L. Stevenson
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States
| | - Slobodan Paessler
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States
| |
Collapse
|
5
|
Lee N, Jeong S, Jeon K, Park MJ, Song W. Prognostic impacts of soluble immune checkpoint regulators and cytokines in patients with SARS-CoV-2 infection. Front Immunol 2022; 13:903419. [PMID: 36045684 PMCID: PMC9423766 DOI: 10.3389/fimmu.2022.903419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 07/27/2022] [Indexed: 11/28/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) has been a pandemic for the past two years. Predicting patient prognosis is critical. Although immune checkpoints (ICs) were shown to be involved in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, quantitative studies of ICs in clinical practice are limited. In this study, various soluble ICs (sICs) and cytokine levels in patients with SARS-CoV-2 infection at different time points were compared between survivors and deaths; we also examined whether sICs are useful for predicting prognosis. sICs and cytokines were measured in serum samples from 38 patients diagnosed with COVID-19 in the first and second week post-diagnosis. All assays were performed by bead-based multiplexed immunoassay system using Luminex Bio-Plex 200 system. The correlation of sICs and cytokines with laboratory markers was evaluated, and the levels of sICs in survivors were compared with those in deaths. Among the sICs, the second-week levels of soluble cluster of differentiation (sCD27, p = 0.012), sCD40 (p< 0.001), cytotoxic T-lymphocyte-associated protein 4 (sCTLA-4, p< 0.001), herpes virus entry mediator (sHVEM, p = 0.026), and T-cell immunoglobulin and mucin-domain containing-3 (sTIM-3, p = 0.002) were significantly higher in deaths than in survivors. The levels of nine cytokines assessed in the second week of deaths were significantly higher than those in survivors. The sICs sCD27, sCD40, sCTLA-4, and sTIM-3 and cytokines chemokine CC motif ligand 2 (CCL2), GM-CSF, IL-10, and IL-8 showed significant positive correlations with the levels of C-reactive protein (CRP) and procalcitonin and were negatively correlated with the absolute lymphocyte count and platelet values. Increased levels of sICs including sCD27, sCD40, sCTLA-4, and sTIM-3 and cytokines were significant factors for poor prognosis. sICs, together with cytokines and inflammatory markers, may be useful as prognostic stratification markers in SARS-CoV-2-infected patients.
Collapse
Affiliation(s)
- Nuri Lee
- Department of Laboratory Medicine, Hallym University College of Medicine, Seoul, South Korea
| | - Seri Jeong
- Department of Laboratory Medicine, Hallym University College of Medicine, Seoul, South Korea
- *Correspondence: Seri Jeong,
| | - Kibum Jeon
- Department of Laboratory Medicine, Hallym University College of Medicine, Hangang Sacred Heart Hospital, Seoul, South Korea
| | - Min-Jeong Park
- Department of Laboratory Medicine, Hallym University College of Medicine, Seoul, South Korea
| | - Wonkeun Song
- Department of Laboratory Medicine, Hallym University College of Medicine, Seoul, South Korea
| |
Collapse
|
6
|
A Naturally Occurring Polymorphism in the Base of Sudan Virus Glycoprotein Decreases Glycoprotein Stability in a Species-Dependent Manner. J Virol 2021; 95:e0107321. [PMID: 34232742 DOI: 10.1128/jvi.01073-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Sudan virus (SUDV) is one of five filoviruses that compose the genus Ebolavirus that has been responsible for episodic outbreaks in Central Africa. While the SUDV glycoprotein (GP) structure has been solved, GP residues that affect SUDV entry have not been extensively examined; many of the entry characteristics of SUDV GP are inferred from studies with the Zaire Ebola virus (EBOV) GP. Here, we investigate the effect on virus entry of a naturally occurring polymorphism in SUDV GP. Two of the earliest SUDV isolates contain glutamine at residue 95 (Q95) within the base region of GP1, whereas more recent SUDV isolates and GPs from all other ebolaviruses carry lysine at this position (K95). A K95Q change dramatically decreased titers of pseudovirions bearing SUDV GP, whereas the K95Q substitution in EBOV GP had no effect on titer. We evaluated virus entry to identify SUDV GP Q95-specific entry defects. The presence of Q95 in either EBOV or SUDV GP resulted in enhanced sensitivity of GP to proteolytic processing, yet this could not account for the SUDV-specific decrease in GP Q95 infectivity. We found that SUDV GP Q95 pseudovirions were more sensitive to imipramine, a GP-destabilizing antiviral. In contrast, SUDV GP K95 was more stable, requiring elevated temperatures to inhibit virus infection. Thus, the residue present at GP 95 has a critical role in stabilizing the SUDV glycoprotein, whereas this polymorphism has no effect on EBOV GP stability. These results provide novel insights into filovirus species-specific GP structure that affects virus infectivity. IMPORTANCE Filovirus outbreaks are associated with significant morbidity and mortality. Understanding the structural constraints of filoviral GPs that control virus entry into cells is critical for rational development of novel antivirals to block infection. Here, we identify a naturally occurring glutamine (Q) to lysine (K) polymorphism at residue 95 as a critical determinant of Sudan virus GP stability but not Zaire Ebola virus GP stability. We propose that glutamine at residue 95 in Sudan virus GP mediates decreased virus entry, thereby reducing infectivity. Our findings highlight a unique structural characteristic of Sudan virus GP that affects GP-mediated functionality. Further, it provides a cautionary note for the development of future broad-spectrum filovirus antivirals.
Collapse
|
7
|
Abstract
Marburg virus (MARV) VP40 protein (mVP40) directs egress and spread of MARV, in part, by recruiting specific host WW domain-containing proteins via its conserved PPxY late (L) domain motif to facilitate efficient virus-cell separation. We reported previously that small-molecule compounds targeting the viral PPxY/host WW domain interaction inhibited VP40-mediated egress and spread. Here, we report on the antiviral potency of novel compound FC-10696, which emerged from extensive structure-activity relationship (SAR) of a previously described series of PPxY inhibitors. We show that FC-10696 inhibits egress of mVP40 virus-like particles (VLPs) and egress of authentic MARV from HeLa cells and primary human macrophages. Moreover, FC-10696 treated-mice displayed delayed onset of weight loss and clinical signs and significantly lower viral loads compared to controls, with 14% of animals surviving 21 days following a lethal MARV challenge. Thus, FC-10696 represents a first-in-class, host-oriented inhibitor effectively targeting late stages of the MARV life cycle.
Collapse
|
8
|
Formulation, Stability, Pharmacokinetic, and Modeling Studies for Tests of Synergistic Combinations of Orally Available Approved Drugs against Ebola Virus In Vivo. Microorganisms 2021; 9:microorganisms9030566. [PMID: 33801811 PMCID: PMC7998926 DOI: 10.3390/microorganisms9030566] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/01/2021] [Accepted: 03/05/2021] [Indexed: 12/28/2022] Open
Abstract
Outbreaks of Ebola ebolavirus (EBOV) have been associated with high morbidity and mortality. Milestones have been reached recently in the management of EBOV disease (EVD) with licensure of an EBOV vaccine and two monoclonal antibody therapies. However, neither vaccines nor therapies are available for other disease-causing filoviruses. In preparation for such outbreaks, and for more facile and cost-effective management of EVD, we seek a cocktail containing orally available and room temperature stable drugs with strong activity against multiple filoviruses. We previously showed that (bepridil + sertraline) and (sertraline + toremifene) synergistically suppress EBOV in cell cultures. Here, we describe steps towards testing these combinations in a mouse model of EVD. We identified a vehicle suitable for oral delivery of the component drugs and determined that, thus formulated the drugs are equally active against EBOV as preparations in DMSO, and they maintain activity upon storage in solution for up to seven days. Pharmacokinetic (PK) studies indicated that the drugs in the oral delivery vehicle are well tolerated in mice at the highest doses tested. Collectively the data support advancement of these combinations to tests for synergy in a mouse model of EVD. Moreover, mathematical modeling based on human oral PK projects that the combinations would be more active in humans than their component single drugs.
Collapse
|