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Payen SH, Adhikari K, Petereit J, Uppal T, Rossetto CC, Verma SC. SARS-CoV-2 superinfection in CD14 + monocytes with latent human cytomegalovirus (HCMV) promotes inflammatory cascade. Virus Res 2024; 345:199375. [PMID: 38642618 PMCID: PMC11061749 DOI: 10.1016/j.virusres.2024.199375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/07/2024] [Accepted: 04/17/2024] [Indexed: 04/22/2024]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the etiologic agent of coronavirus disease 2019 (COVID-19), has posed significant challenges to global health. While much attention has been directed towards understanding the primary mechanisms of SARS-CoV-2 infection, emerging evidence suggests co-infections or superinfections with other viruses may contribute to increased morbidity and mortality, particularly in severe cases of COVID-19. Among viruses that have been reported in patients with SARS-CoV-2, seropositivity for Human cytomegalovirus (HCMV) is associated with increased COVID-19 risk and hospitalization. HCMV is a ubiquitous beta-herpesvirus with a seroprevalence of 60-90 % worldwide and one of the leading causes of mortality in immunocompromised individuals. The primary sites of latency for HCMV include CD14+ monocytes and CD34+ hematopoietic cells. In this study, we sought to investigate SARS-CoV-2 infection of CD14+ monocytes latently infected with HCMV. We demonstrate that CD14+ cells are susceptible and permissive to SARS-CoV-2 infection and detect subgenomic transcripts indicative of replication. To further investigate the molecular changes triggered by SARS-CoV-2 infection in HCMV-latent CD14+ monocytes, we conducted RNA sequencing coupled with bioinformatic differential gene analysis. The results revealed significant differences in cytokine-cytokine receptor interactions and inflammatory pathways in cells superinfected with replication-competent SARS-CoV-2 compared to the heat-inactivated and mock controls. Notably, there was a significant upregulation in transcripts associated with pro-inflammatory response factors and a decrease in anti-inflammatory factors. Taken together, these findings provide a basis for the heightened inflammatory response, offering potential avenues for targeted therapeutic interventions among HCMV-infected severe cases of COVID-19. SUMMARY: COVID-19 patients infected with secondary viruses have been associated with a higher prevalence of severe symptoms. Individuals seropositive for human cytomegalovirus (HCMV) infection are at an increased risk for severe COVID-19 disease and hospitalization. HCMV reactivation has been reported in severe COVID-19 cases with respiratory failure and could be the result of co-infection with SARS-CoV-2 and HCMV. In a cell culture model of superinfection, HCMV has previously been shown to increase infection of SARS-CoV-2 of epithelial cells by upregulating the human angiotensin-converting enzyme-2 (ACE2) receptor. In this study, we utilize CD14+ monocytes, a major cell type that harbors latent HCMV, to investigate co-infection of SARS-CoV-2 and HCMV. This study is a first step toward understanding the mechanism that may facilitate increased COVID-19 disease severity in patients infected with SARS-CoV-2 and HCMV.
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Affiliation(s)
- Shannon Harger Payen
- Reno School of Medicine, Department of Microbiology & Immunology/MS 320, University of Nevada, Reno, NV 89557, United States
| | - Kabita Adhikari
- Reno School of Medicine, Department of Microbiology & Immunology/MS 320, University of Nevada, Reno, NV 89557, United States
| | - Juli Petereit
- Nevada Bioinformatics Center (RRID:SCR_017802), University of Nevada, Reno, NV 89557, United States
| | - Timsy Uppal
- Reno School of Medicine, Department of Microbiology & Immunology/MS 320, University of Nevada, Reno, NV 89557, United States
| | - Cyprian C Rossetto
- Reno School of Medicine, Department of Microbiology & Immunology/MS 320, University of Nevada, Reno, NV 89557, United States
| | - Subhash C Verma
- Reno School of Medicine, Department of Microbiology & Immunology/MS 320, University of Nevada, Reno, NV 89557, United States.
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2
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Su H, Mueller A, Goldstein H. Recent advances on anti-HIV chimeric antigen receptor-T-cell treatment to provide sustained HIV remission. Curr Opin HIV AIDS 2024; 19:169-178. [PMID: 38695148 DOI: 10.1097/coh.0000000000000858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
PURPOSE OF REVIEW Successful sustained remission of HIV infection has been achieved after CCR5Δ32/Δ32 allogeneic hematopoietic stem cell transplantation for treatment of leukemia in a small cohort of people living with HIV (PLWH). This breakthrough demonstrated that the goal of curing HIV was achievable. However, the high morbidity and mortality associated with bone marrow transplantation limits the routine application of this approach and provides a strong rationale for pursuing alternative strategies for sustained long-term antiretroviral therapy (ART)-free HIV remission. Notably, long-term immune-mediated control of HIV replication observed in elite controllers and posttreatment controllers suggests that potent HIV-specific immune responses could provide sustained ART-free remission in PLWH. The capacity of chimeric antigen receptor (CAR)-T cells engineered to target malignant cells to induce remission and cure in cancer patients made this an attractive approach to provide PLWH with a potent HIV-specific immune response. Here, we review the recent advances in the design and application of anti-HIV CAR-T-cell therapy to provide a functional HIV cure. RECENT FINDINGS HIV reservoirs are established days after infection and persist through clonal expansion of infected cells. The continuous interaction between latently infected cells and the immune system shapes the landscape of HIV latency and likely contributes to ART-free viral control in elite controllers. CAR-T cells can exhibit superior antiviral activity as compared with native HIV-specific T cells, particularly because they can be engineered to have multiple HIV specificities, resistance to HIV infection, dual costimulatory signaling, immune checkpoint inhibitors, stem cell derivation, CMV TCR coexpression, and tissue homing ligands. These modifications can significantly improve the capacities of anti-HIV CAR-T cells to prevent viral escape, resist HIV infection, and enhance cytotoxicity, persistence, and tissue penetration. Collectively, these novel modifications of anti-HIV CAR-T cell design have increased their capacity to control HIV infection. SUMMARY Anti-HIV CAR-T cells can be engineered to provide potent and sustained in-vitro and in-vivo antiviral function. The combination of anti-HIV CAR-T cells with other immunotherapeutics may contribute to long-term HIV remission in PLWH.
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Affiliation(s)
- Hang Su
- Department of Microbiology & Immunology
| | | | - Harris Goldstein
- Department of Microbiology & Immunology
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, New York, USA
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Rodrigo MB, De Min A, Jorch SK, Martin-Higueras C, Baumgart AK, Goldyn B, Becker S, Garbi N, Lemmermann NA, Kurts C. Dual fluorescence reporter mice for Ccl3 transcription, translation, and intercellular communication. J Exp Med 2024; 221:e20231814. [PMID: 38661718 PMCID: PMC11044946 DOI: 10.1084/jem.20231814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 02/21/2024] [Accepted: 03/27/2024] [Indexed: 04/26/2024] Open
Abstract
Chemokines guide immune cells during their response against pathogens and tumors. Various techniques exist to determine chemokine production, but none to identify cells that directly sense chemokines in vivo. We have generated CCL3-EASER (ErAse, SEnd, Receive) mice that simultaneously report for Ccl3 transcription and translation, allow identifying Ccl3-sensing cells, and permit inducible deletion of Ccl3-producing cells. We infected these mice with murine cytomegalovirus (mCMV), where Ccl3 and NK cells are critical defense mediators. We found that NK cells transcribed Ccl3 already in homeostasis, but Ccl3 translation required type I interferon signaling in infected organs during early infection. NK cells were both the principal Ccl3 producers and sensors of Ccl3, indicating auto/paracrine communication that amplified NK cell response, and this was essential for the early defense against mCMV. CCL3-EASER mice represent the prototype of a new class of dual fluorescence reporter mice for analyzing cellular communication via chemokines, which may be applied also to other chemokines and disease models.
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Affiliation(s)
- Maria Belen Rodrigo
- Institute of Molecular Medicine and Experimental Immunology, Faculty of Medicine, University Hospital of Bonn University, Bonn, Germany
| | - Anna De Min
- Institute of Molecular Medicine and Experimental Immunology, Faculty of Medicine, University Hospital of Bonn University, Bonn, Germany
| | - Selina Kathleen Jorch
- Institute of Molecular Medicine and Experimental Immunology, Faculty of Medicine, University Hospital of Bonn University, Bonn, Germany
| | - Cristina Martin-Higueras
- Institute of Molecular Medicine and Experimental Immunology, Faculty of Medicine, University Hospital of Bonn University, Bonn, Germany
| | - Ann-Kathrin Baumgart
- Institute of Molecular Medicine and Experimental Immunology, Faculty of Medicine, University Hospital of Bonn University, Bonn, Germany
| | - Beata Goldyn
- Institute of Molecular Medicine and Experimental Immunology, Faculty of Medicine, University Hospital of Bonn University, Bonn, Germany
| | - Sara Becker
- Institute of Virology, Faculty of Medicine, University Hospital of Bonn University, Bonn, Germany
| | - Natalio Garbi
- Institute of Molecular Medicine and Experimental Immunology, Faculty of Medicine, University Hospital of Bonn University, Bonn, Germany
| | - Niels A. Lemmermann
- Institute of Virology, Faculty of Medicine, University Hospital of Bonn University, Bonn, Germany
- Institute for Virology, University Medical Center Mainz, Mainz, Germany
| | - Christian Kurts
- Institute of Molecular Medicine and Experimental Immunology, Faculty of Medicine, University Hospital of Bonn University, Bonn, Germany
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Yan T, Pang X, Liang B, Meng Q, Wei H, Li W, Liu D, Hu Y. Comprehensive bioinformatics analysis of human cytomegalovirus pathway genes in pan-cancer. Hum Genomics 2024; 18:65. [PMID: 38886862 PMCID: PMC11181644 DOI: 10.1186/s40246-024-00633-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 06/05/2024] [Indexed: 06/20/2024] Open
Abstract
BACKGROUND Human cytomegalovirus (HCMV) is a herpesvirus that can infect various cell types and modulate host gene expression and immune response. It has been associated with the pathogenesis of various cancers, but its molecular mechanisms remain elusive. METHODS We comprehensively analyzed the expression of HCMV pathway genes across 26 cancer types using the Cancer Genome Atlas (TCGA) and The Genotype-Tissue Expression (GTEx) databases. We also used bioinformatics tools to study immune invasion and tumor microenvironment in pan-cancer. Cox regression and machine learning were used to analyze prognostic genes and their relationship with drug sensitivity. RESULTS We found that HCMV pathway genes are widely expressed in various cancers. Immune infiltration and the tumor microenvironment revealed that HCMV is involved in complex immune processes. We obtained prognostic genes for 25 cancers and significantly found 23 key genes in the HCMV pathway, which are significantly enriched in cellular chemotaxis and synaptic function and may be involved in disease progression. Notably, CaM family genes were up-regulated and AC family genes were down-regulated in most tumors. These hub genes correlate with sensitivity or resistance to various drugs, suggesting their potential as therapeutic targets. CONCLUSIONS Our study has revealed the role of the HCMV pathway in various cancers and provided insights into its molecular mechanism and therapeutic significance. It is worth noting that the key genes of the HCMV pathway may open up new doors for cancer prevention and treatment.
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Affiliation(s)
- Tengyue Yan
- Collaborative Innovation Centre of Regenerative Medicine and Medical Bioresource Development and Application Co-constructed by the Province and Ministry, Guangxi Medical University, Nanning, Guangxi, 530021, China
| | - Xianwu Pang
- Guangxi Zhuang Autonomous Region Center for Disease Control and Prevention, Nanning, 530028, China
| | - Boying Liang
- Department of Immunology, School of Basic Medical Sciences, Guangxi Medical University, Nanning, China
| | - Qiuxia Meng
- School of Information and Managent, Guangxi Medical University, Nanning, China
| | - Huilin Wei
- School of Institute of Life Sciences, Guangxi Medical University, Nanning, China
| | - Wen Li
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Guangxi Medical University, Nanning, China
| | - Dahai Liu
- School of Medicine, Foshan University, Foshan, Guangdong, 528000, People's Republic of China.
| | - Yanling Hu
- Collaborative Innovation Centre of Regenerative Medicine and Medical Bioresource Development and Application Co-constructed by the Province and Ministry, Guangxi Medical University, Nanning, Guangxi, 530021, China.
- School of Institute of Life Sciences, Guangxi Medical University, Nanning, China.
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Maliano MR, Yetming KD, Kalejta RF. Triple lysine and nucleosome-binding motifs of the viral IE19 protein are required for human cytomegalovirus S-phase infections. mBio 2024; 15:e0016224. [PMID: 38695580 DOI: 10.1128/mbio.00162-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 02/29/2024] [Indexed: 06/13/2024] Open
Abstract
Herpesvirus genomes are maintained as extrachromosomal plasmids within the nuclei of infected cells. Some herpesviruses persist within dividing cells, putting the viral genome at risk of being lost to the cytoplasm during mitosis because karyokinesis (nuclear division) requires nuclear envelope breakdown. Oncogenic herpesviruses (and papillomaviruses) avoid genome loss during mitosis by tethering their genomes to cellular chromosomes, thereby ensuring viral genome uptake into newly formed nuclei. These viruses use viral proteins with DNA- and chromatin-binding capabilities to physically link viral and cellular genomes together in a process called tethering. The known viral tethering proteins of human papillomavirus (E2), Epstein-Barr virus (EBNA1), and Kaposi's sarcoma-associated herpesvirus (LANA) each contain two independent domains required for genome tethering, one that binds sequence specifically to the viral genome and another that binds to cellular chromatin. This latter domain is called a chromatin tethering domain (CTD). The human cytomegalovirus UL123 gene encodes a CTD that is required for the virus to productively infect dividing fibroblast cells within the S phase of the cell cycle, presumably by tethering the viral genome to cellular chromosomes during mitosis. The CTD-containing UL123 gene product that supports S-phase infections is the IE19 protein. Here, we define two motifs in IE19 required for S-phase infections: an N-terminal triple lysine motif and a C-terminal nucleosome-binding motif within the CTD.IMPORTANCEThe IE19 protein encoded by human cytomegalovirus (HCMV) is required for S-phase infection of dividing cells, likely because it tethers the viral genome to cellular chromosomes, thereby allowing them to survive mitosis. The mechanism through which IE19 tethers viral genomes to cellular chromosomes is not understood. For human papillomavirus, Epstein-Barr virus, and Kaposi's sarcoma-associated herpesvirus, viral genome tethering is required for persistence (latency) and pathogenesis (oncogenesis). Like these viruses, HCMV also achieves latency, and it modulates the properties of glioblastoma multiforme tumors. Therefore, defining the mechanism through which IE19 tethers viral genomes to cellular chromosomes may help us understand, and ultimately combat or control, HCMV latency and oncomodulation.
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Affiliation(s)
- Minor R Maliano
- Institute for Molecular Virology, University of Wisconsin-Madison, Madison, Wisconsin, USA
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Kristen D Yetming
- Institute for Molecular Virology, University of Wisconsin-Madison, Madison, Wisconsin, USA
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Molecular Biology, Charles River Laboratories, Wayne, Pennsylvania, USA
| | - Robert F Kalejta
- Institute for Molecular Virology, University of Wisconsin-Madison, Madison, Wisconsin, USA
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, Wisconsin, USA
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Matt SM, Nolan R, Manikandan S, Agarwal Y, Channer B, Oteju O, Daniali M, Canagarajah JA, LuPone T, Mompho K, Runner K, Nickoloff-Bybel E, Li B, Niu M, Schlachetzki JCM, Fox HS, Gaskill PJ. Dopamine-driven Increase in IL-1β in Myeloid Cells is Mediated by Differential Dopamine Receptor Expression and Exacerbated by HIV. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.09.598137. [PMID: 38915663 PMCID: PMC11195146 DOI: 10.1101/2024.06.09.598137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
The catecholamine neurotransmitter dopamine is classically known for regulation of central nervous system (CNS) functions such as reward, movement, and cognition. Increasing evidence also indicates that dopamine regulates critical functions in peripheral organs and is an important immunoregulatory factor. We have previously shown that dopamine increases NF-κB activity, inflammasome activation, and the production of inflammatory cytokines such as IL-1β in human macrophages. As myeloid lineage cells are central to the initiation and resolution of acute inflammatory responses, dopamine-mediated dysregulation of these functions could both impair the innate immune response and exacerbate chronic inflammation. However, the exact pathways by which dopamine drives myeloid inflammation are not well defined, and studies in both rodent and human systems indicate that dopamine can impact the production of inflammatory mediators through both D1-like dopamine receptors (DRD1, DRD5) and D2-like dopamine receptors (DRD2, DRD3, and DRD4). Therefore, we hypothesized that dopamine-mediated production of IL-1β in myeloid cells is regulated by the ratio of different dopamine receptors that are activated. Our data in primary human monocyte-derived macrophages (hMDM) indicate that DRD1 expression is necessary for dopamine-mediated increases in IL-1β, and that changes in the expression of DRD2 and other dopamine receptors can alter the magnitude of the dopamine-mediated increase in IL-1β. Mature hMDM have a high D1-like to D2-like receptor ratio, which is different relative to monocytes and peripheral blood mononuclear cells (PBMCs). We further confirm in human microglia cell lines that a high ratio of D1-like to D2-like receptors promotes dopamine-induced increases in IL-1β gene and protein expression using pharmacological inhibition or overexpression of dopamine receptors. RNA-sequencing of dopamine-treated microglia shows that genes encoding functions in IL-1β signaling pathways, microglia activation, and neurotransmission increased with dopamine treatment. Finally, using HIV as an example of a chronic inflammatory disease that is substantively worsened by comorbid substance use disorders (SUDs) that impact dopaminergic signaling, we show increased effects of dopamine on inflammasome activation and IL-1β in the presence of HIV in both human macrophages and microglia. These data suggest that use of addictive substances and dopamine-modulating therapeutics could dysregulate the innate inflammatory response and exacerbate chronic neuroimmunological conditions like HIV. Thus, a detailed understanding of dopamine-mediated changes in inflammation, in particular pathways regulating IL-1β, will be critical to effectively tailor medication regimens.
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7
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Atanasoff KE, Parsons AJ, Ophir SI, Lurain N, Kraus T, Moran T, Duty JA, Tortorella D. A broadly neutralizing human monoclonal antibody generated from transgenic mice immunized with HCMV particles limits virus infection and proliferation. J Virol 2024:e0021324. [PMID: 38832789 DOI: 10.1128/jvi.00213-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 05/07/2024] [Indexed: 06/05/2024] Open
Abstract
Human cytomegalovirus (HCMV) is a β-herpesvirus that poses severe disease risk for immunocompromised patients who experience primary infection or reactivation. Development and optimization of safe and effective anti-HCMV therapeutics is of urgent necessity for the prevention and treatment of HCMV-associated diseases in diverse populations. The use of neutralizing monoclonal antibodies (mAbs) to limit HCMV infection poses a promising therapeutic strategy, as anti-HCMV mAbs largely inhibit infection by targeting virion glycoprotein complexes. In contrast, the small-molecule compounds currently approved for patients (e.g., ganciclovir, letermovir, and maribavir) target later stages of the HCMV life cycle. Here, we present a broadly neutralizing human mAb, designated 1C10, elicited from a VelocImmune mouse immunized with infectious HCMV particles. Clone 1C10 neutralizes infection after virion binding to cells by targeting gH/gL envelope complexes and potently reduces infection of diverse HCMV strains in fibroblast, trophoblast, and epithelial cells. Antibody competition assays found that 1C10 recognizes a region of gH associated with broad neutralization and binds to soluble pentamer in the low nanomolar range. Importantly, 1C10 treatment significantly reduced virus proliferation in both fibroblast and epithelial cells. Further, the combination treatment of mAb 1C10 with ganciclovir reduced HCMV infection and proliferation in a synergistic manner. This work characterizes a neutralizing human mAb for potential use as a HCMV treatment, as well as a possible therapeutic strategy utilizing combination-based treatments targeting disparate steps of the viral life cycle. Collectively, the findings support an antibody-based therapy to effectively treat patients at risk for HCMV-associated diseases. IMPORTANCE Human cytomegalovirus is a herpesvirus that infects a large proportion of the population and can cause significant disease in diverse patient populations whose immune systems are suppressed or compromised. The development and optimization of safe anti-HCMV therapeutics, especially those that have viral targets and inhibition mechanisms different from current HCMV treatments, are of urgent necessity to better public health. Human monoclonal antibodies (mAbs) that prevent HCMV entry of cells were identified by immunizing transgenic mice and screened for broad and effective neutralization capability. Here, we describe one such mAb, which was found to target gH/gL envelope complexes and effectively limit HCMV infection and dissemination. Further, administration of the antibody in combination with the antiviral drug ganciclovir inhibited HCMV in a synergistic manner, highlighting this approach and the use of anti-HCMV mAbs more broadly, as a potential therapeutic strategy for the treatment of diverse patient populations.
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Affiliation(s)
- Kristina E Atanasoff
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Andrea J Parsons
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Sabrina I Ophir
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Nell Lurain
- Department of Immunology-Microbiology, Rush University, Chicago, Illinois, USA
| | - Thomas Kraus
- Center for Therapeutic Antibody Development, Drug Discovery Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Thomas Moran
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Center for Therapeutic Antibody Development, Drug Discovery Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - J Andrew Duty
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Center for Therapeutic Antibody Development, Drug Discovery Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Domenico Tortorella
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
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8
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Marrufo AM, Flores-Mireles AL. Macrophage fate: to kill or not to kill? Infect Immun 2024:e0047623. [PMID: 38829045 DOI: 10.1128/iai.00476-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024] Open
Abstract
Macrophages are dynamic innate immune cells that either reside in tissue, serving as sentinels, or recruited as monocytes from bone marrow into inflamed and infected tissue. In response to cues in the tissue microenvironment (TME), macrophages polarize on a continuum toward M1 or M2 with diverse roles in progression and resolution of disease. M1-like macrophages exhibit proinflammatory functions with antimicrobial and anti-tumorigenic activities, while M2-like macrophages have anti-inflammatory functions that generally resolve inflammatory responses and orchestrate a tissue healing process. Given these opposite phenotypes, proper spatiotemporal coordination of macrophage polarization in response to cues within the TME is critical to effectively resolve infectious disease and regulate wound healing. However, if this spatiotemporal coordination becomes disrupted due to persistent infection or dysregulated coagulation, macrophages' inappropriate response to these cues will result in the development of diseases with clinically unfavorable outcomes. Since plasticity and heterogeneity are hallmarks of macrophages, they are attractive targets for therapies to reprogram toward specific phenotypes that could resolve disease and favor clinical prognosis. In this review, we discuss how basic science studies have elucidated macrophage polarization mechanisms in TMEs during infections and inflammation, particularly coagulation. Therefore, understanding the dynamics of macrophage polarization within TMEs in diseases is important in further development of targeted therapies.
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Affiliation(s)
- Armando M Marrufo
- Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana, USA
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9
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Yuan Q, Fan Z, Huang W, Huo X, Yang X, Ran Y, Chen J, Li H. Human cytomegalovirus UL23 exploits PD-L1 inhibitory signaling pathway to evade T cell-mediated cytotoxicity. mBio 2024:e0119124. [PMID: 38829126 DOI: 10.1128/mbio.01191-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Accepted: 04/29/2024] [Indexed: 06/05/2024] Open
Abstract
Human cytomegalovirus (HCMV), a widely prevalent human beta-herpesvirus, establishes lifelong persistence in the host following primary infection. In healthy individuals, the virus is effectively controlled by HCMV-specific T cells and typically exhibits asymptomatic. The T cell immune response plays a pivotal role in combating HCMV infection, while HCMV employs various strategies to counteract it within the host. Previously, we reported that UL23, a tegument protein of HCMV, facilitates viral immune evasion from interferon-gamma (IFN-γ) responses, and it is well known that IFN-γ is mainly derived from T cells. However, the involvement of UL23 in viral immune evasion from T cell-mediated immunity remains unclear. Herein, we present compelling evidence that UL23 significantly enhances viral resistance against T cell-mediated cytotoxicity during HCMV infection from the co-culture assays of HCMV-infected cells with T cells. We found that IFN-γ plays a major role in regulating T cell cytotoxicity mediated by UL23. More interestingly, we demonstrated that UL23 not only regulates the IFN-γ downstream responses but also modulates the IFN-γ secretion by regulating T cell activities. Further experiments indicate that UL23 upregulates the expression and signaling of programmed death ligand 1 (PD-L1), which is responsible for inhibiting multiple aspects of T cell activities, including activation, apoptosis, and IFN-γ secretion, as determined through RNA-seq analysis and inhibitor-blocking experiments, ultimately facilitating viral replication and spread. Our findings highlight the potential role of UL23 as an alternative antagonist in suppressing T cell cytotoxicity and unveil a novel strategy for HCMV to evade T cell immunity. IMPORTANCE T cell immunity is pivotal in controlling primary human cytomegalovirus (HCMV) infection, restricting periodic reactivation, and preventing HCMV-associated diseases. Despite inducing a robust T cell immune response, HCMV has developed sophisticated immune evasion mechanisms that specifically target T cell responses. Although numerous studies have been conducted on HCMV-specific T cells, the primary focus has been on the impact of HCMV on T cell recognition via major histocompatibility complex molecules. Our studies show for the first time that HCMV exploits the programmed death ligand 1 (PD-L1) inhibitory signaling pathway to evade T cell immunity by modulating the activities of T cells and thereby blocking the secretion of IFN-γ, which is directly mediated by HCMV-encoded tegument protein UL23. While PD-L1 has been extensively studied in the context of tumors and viruses, its involvement in HCMV infection and viral immune evasion is rarely reported. We observed an upregulation of PD-L1 in normal cells during HCMV infection and provided strong evidence supporting its critical role in UL23-induced inhibition of T cell-mediated cytotoxicity. The novel strategy employed by HCMV to manipulate the inhibitory signaling pathway of T cell immune activation for viral evasion through its encoded protein offers valuable insights for the understanding of HCMV-mediated T cell immunomodulation and developing innovative antiviral treatment strategies.
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Affiliation(s)
- Qin Yuan
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, China
- Key Laboratory of Viral Pathogenesis & Infection Prevention and Control (Jinan University), Ministry of Education, Guangzhou, China
- Department of Biological Sciences and Biotechnology, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Zhaosong Fan
- Department of Biological Sciences and Biotechnology, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Wenqiang Huang
- Department of Biological Sciences and Biotechnology, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Xiaoping Huo
- Department of Biological Sciences and Biotechnology, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Xiaoping Yang
- Department of Biological Sciences and Biotechnology, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Yanhong Ran
- Department of Biological Sciences and Biotechnology, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Jun Chen
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, China
- Key Laboratory of Viral Pathogenesis & Infection Prevention and Control (Jinan University), Ministry of Education, Guangzhou, China
| | - Hongjian Li
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, China
- Key Laboratory of Viral Pathogenesis & Infection Prevention and Control (Jinan University), Ministry of Education, Guangzhou, China
- Department of Biological Sciences and Biotechnology, College of Life Science and Technology, Jinan University, Guangzhou, China
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10
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Santamorena MM, Tischer-Zimmermann S, Bonifacius A, Mireisz CNM, Costa B, Khan F, Kulkarni U, Lauruschkat CD, Sampaio KL, Stripecke R, Blasczyk R, Maecker-Kolhoff B, Kraus S, Schlosser A, Cicin-Sain L, Kalinke U, Eiz-Vesper B. Engineered HCMV-infected APCs enable the identification of new immunodominant HLA-restricted epitopes of anti-HCMV T-cell immunity. HLA 2024; 103:e15541. [PMID: 38923358 DOI: 10.1111/tan.15541] [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: 10/27/2023] [Revised: 04/24/2024] [Accepted: 05/07/2024] [Indexed: 06/28/2024]
Abstract
Complications due to HCMV infection or reactivation remain a challenging clinical problem in immunocompromised patients, mainly due to insufficient or absent T-cell functionality. Knowledge of viral targets is crucial to improve monitoring of high-risk patients and optimise antiviral T-cell therapy. To expand the epitope spectrum, genetically-engineered dendritic cells (DCs) and fibroblasts were designed to secrete soluble (s)HLA-A*11:01 and infected with an HCMV mutant lacking immune evasion molecules (US2-6 + 11). More than 700 HLA-A*11:01-restricted epitopes, including more than 50 epitopes derived from a broad range of HCMV open-reading-frames (ORFs) were identified by mass spectrometry and screened for HLA-A*11:01-binding using established prediction tools. The immunogenicity of the 24 highest scoring new candidates was evaluated in vitro in healthy HLA-A*11:01+/HCMV+ donors. Thus, four subdominant epitopes and one immunodominant epitope, derived from the anti-apoptotic protein UL36 and ORFL101C (A11SAL), were identified. Their HLA-A*11:01 complex stability was verified in vitro. In depth analyses revealed highly proliferative and cytotoxic memory T-cell responses against A11SAL, with T-cell responses comparable to the immunodominant HLA-A*02:01-restricted HCMVpp65NLV epitope. A11SAL-specific T cells were also detectable in vivo in immunosuppressed transplant patients and shown to be effective in an in vitro HCMV-infection model, suggesting their crucial role in inhibiting viral replication and improvement of patient's outcome. The developed in vitro pipeline is the first to utilise genetically-engineered DCs to identify naturally presented immunodominant HCMV-derived epitopes. It therefore offers advantages over in silico predictions, is transferable to other HLA alleles, and will significantly expand the repertoire of viral targets to improve therapeutic options.
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Affiliation(s)
- Maria Michela Santamorena
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School (MHH), Hannover, Germany
| | - Sabine Tischer-Zimmermann
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School (MHH), Hannover, Germany
| | - Agnes Bonifacius
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School (MHH), Hannover, Germany
- German Center for Infection Research (DZIF), Site Hannover-Braunschweig, Hannover, Germany
| | - Chiara Noemi-Marie Mireisz
- Rudolf Virchow Center for Integrative and Translational Bioimaging, University of Wuerzburg, Wuerzburg, Germany
| | - Bibiana Costa
- Institute for Experimental Infection Research, TWINCORE, Centre for Experimental and Clinical Infection Research, Hannover, Germany
| | - Fawad Khan
- Immune Ageing and Chronic Infection, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Upasana Kulkarni
- Immune Ageing and Chronic Infection, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | | | | | - Renata Stripecke
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Düsseldorf, Center for Molecular Medicine Cologne (CMMC), Institute of Translational Immuno-oncology, Cologne, Germany
- German Center for Infections Research (DZIF) Bonn-Cologne, Cologne, Germany
| | - Rainer Blasczyk
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School (MHH), Hannover, Germany
| | - Britta Maecker-Kolhoff
- German Center for Infection Research (DZIF), Site Hannover-Braunschweig, Hannover, Germany
- German Center for Infections Research (DZIF) Bonn-Cologne, Cologne, Germany
- Department of Pediatric Hematology and Oncology, Hannover Medical School, Hannover, Germany
| | - Sabrina Kraus
- Department of Internal Medicine II, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Andreas Schlosser
- Rudolf Virchow Center for Integrative and Translational Bioimaging, University of Wuerzburg, Wuerzburg, Germany
| | - Luka Cicin-Sain
- German Center for Infection Research (DZIF), Site Hannover-Braunschweig, Hannover, Germany
- Immune Ageing and Chronic Infection, Helmholtz Centre for Infection Research, Braunschweig, Germany
- Cluster of Excellence - Resolving Infection Susceptibility (RESIST, EXC 2155), Hannover Medical School, Hannover, Germany
| | - Ulrich Kalinke
- Institute for Experimental Infection Research, TWINCORE, Centre for Experimental and Clinical Infection Research, Hannover, Germany
- Cluster of Excellence - Resolving Infection Susceptibility (RESIST, EXC 2155), Hannover Medical School, Hannover, Germany
| | - Britta Eiz-Vesper
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School (MHH), Hannover, Germany
- German Center for Infection Research (DZIF), Site Hannover-Braunschweig, Hannover, Germany
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11
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Sun K, Ilic K, Xu P, Ye R, Wu J, Song IH. Effect of Food, Crushing of Tablets, and Antacid Coadministration on Maribavir Pharmacokinetics in Healthy Adult Participants: Results From 2 Phase 1, Open-Label, Randomized, Crossover Studies. Clin Pharmacol Drug Dev 2024; 13:644-654. [PMID: 38708555 DOI: 10.1002/cpdd.1406] [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: 10/26/2023] [Accepted: 04/01/2024] [Indexed: 05/07/2024]
Abstract
The effect of food composition, tablet crushing, and antacid coadministration on maribavir pharmacokinetics was assessed in 2 Phase 1 studies in healthy adults. In the first, a single maribavir 400-mg dose was administered under fasting conditions, with a low-fat/low-calorie or a high-fat/high-calorie meal. In the second, a single maribavir 100-mg dose was administered under fasting conditions, as a crushed tablet, or as a whole tablet alone or with an antacid. The 90% confidence intervals of the geometric mean ratios were within 80%-125% for area under the concentration-time curve (AUC), but not for maximum plasma concentration (Cmax) for low-fat/low-calorie and high-fat/high-calorie meals versus fasting or for whole tablet with antacid versus whole tablet alone. The 90% confidence intervals of the geometric mean ratios for AUC and Cmax were within 80%-125% for crushed versus whole tablet. Maribavir median time to Cmax value in plasma under fed conditions was delayed versus fasting conditions, but there was no statistical difference for crushed versus whole tablet or with versus without antacid. As the antiviral efficacy of maribavir is driven by AUC but not Cmax, findings suggest that maribavir can be administered with food or antacids or as a crushed tablet.
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Affiliation(s)
- Kefeng Sun
- Quantitative Clinical Pharmacology, Takeda Development Center Americas, Inc., Cambridge, MA, USA
| | - Katarina Ilic
- Rare Genetics and Hematology Therapeutic Area Unit, Takeda Development Center Americas, Inc., Cambridge, MA, USA
| | - Peixin Xu
- Statistical and Quantitative Sciences, Takeda Development Center Americas, Inc., Cambridge, MA, USA
| | - Ran Ye
- Bioanalytical Sciences, Takeda Development Center Americas, Inc., Cambridge, MA, USA
| | - Jingyang Wu
- Statistical and Quantitative Sciences, Takeda Development Center Americas, Inc., Cambridge, MA, USA
| | - Ivy H Song
- Quantitative Clinical Pharmacology, Takeda Development Center Americas, Inc., Cambridge, MA, USA
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12
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Chan S, Morgan B, Yong MK, Margetts M, Farchione AJ, Lucas EC, Godsell J, Giang NA, Slade CA, von Borstel A, Bryant VL, Howson LJ. Cytomegalovirus drives Vδ1 + γδ T cell expansion and clonality in common variable immunodeficiency. Nat Commun 2024; 15:4286. [PMID: 38769332 PMCID: PMC11106253 DOI: 10.1038/s41467-024-48527-3] [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: 12/07/2023] [Accepted: 05/02/2024] [Indexed: 05/22/2024] Open
Abstract
The function and phenotype of γδ T cells in the context of common variable immunodeficiency (CVID) has not been explored. CVID is a primary immunodeficiency disorder characterized by impaired antibody responses resulting in increased susceptibility to infections. γδ T cells are a subset of unconventional T cells that play crucial roles in host defence against infections. In this study, we aim to determine the roles and functions of γδ T cells in CVID. We observe a higher frequency of Vδ1+ γδ T cells compared to healthy controls, particularly in older patients. We also find a higher proportion of effector-memory Vδ1+ γδ T cells and a more clonal T cell receptor (TCR) repertoire in CVID. The most significant driver of the Vδ1+ γδ T cell expansion and phenotype in CVID patients is persistent cytomegalovirus (CMV) viremia. These findings provide valuable insights into γδ T cell biology and their contribution to immune defence in CVID.
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Affiliation(s)
- Samantha Chan
- Immunology Division, Walter & Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
- Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia
- Department of Clinical Immunology & Allergy, Royal Melbourne Hospital, Melbourne, VIC, Australia
- Department of Medicine, The University of Melbourne, Melbourne, VIC, Australia
| | - Benjamin Morgan
- Immunology Division, Walter & Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
| | - Michelle K Yong
- Victorian Infectious Diseases Service, Royal Melbourne Hospital, Melbourne, VIC, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC, Australia
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Mai Margetts
- Immunology Division, Walter & Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
| | - Anthony J Farchione
- Immunology Division, Walter & Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
- Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia
| | - Erin C Lucas
- Immunology Division, Walter & Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
| | - Jack Godsell
- Department of Clinical Immunology & Allergy, Royal Melbourne Hospital, Melbourne, VIC, Australia
- Department of Infectious Diseases, Austin Hospital, Heidelberg, VIC, Australia
| | - Nhi Ai Giang
- Department of Clinical Immunology & Allergy, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - Charlotte A Slade
- Immunology Division, Walter & Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
- Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia
- Department of Clinical Immunology & Allergy, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - Anouk von Borstel
- Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Department of Immunology, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Vanessa L Bryant
- Immunology Division, Walter & Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
- Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia
- Department of Clinical Immunology & Allergy, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - Lauren J Howson
- Immunology Division, Walter & Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia.
- Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia.
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13
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Wehbe E, Patanwala AE, Lu CY, Kim HY, Stocker SL, Alffenaar JWC. Therapeutic Drug Monitoring and Biomarkers; towards Better Dosing of Antimicrobial Therapy. Pharmaceutics 2024; 16:677. [PMID: 38794338 PMCID: PMC11125587 DOI: 10.3390/pharmaceutics16050677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 05/08/2024] [Accepted: 05/13/2024] [Indexed: 05/26/2024] Open
Abstract
Due to variability in pharmacokinetics and pharmacodynamics, clinical outcomes of antimicrobial drug therapy vary between patients. As such, personalised medication management, considering both pharmacokinetics and pharmacodynamics, is a growing concept of interest in the field of infectious diseases. Therapeutic drug monitoring is used to adjust and individualise drug regimens until predefined pharmacokinetic exposure targets are achieved. Minimum inhibitory concentration (drug susceptibility) is the best available pharmacodynamic parameter but is associated with many limitations. Identification of other pharmacodynamic parameters is necessary. Repurposing diagnostic biomarkers as pharmacodynamic parameters to evaluate treatment response is attractive. When combined with therapeutic drug monitoring, it could facilitate making more informed dosing decisions. We believe the approach has potential and justifies further research.
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Affiliation(s)
- Eman Wehbe
- Faculty of Medicine and Health, School of Pharmacy, The University of Sydney, Sydney, NSW 2006, Australia; (E.W.); (A.E.P.); (C.Y.L.); (H.Y.K.); (S.L.S.)
- Department of Pharmacy, Westmead Hospital, Sydney, NSW 2145, Australia
| | - Asad E. Patanwala
- Faculty of Medicine and Health, School of Pharmacy, The University of Sydney, Sydney, NSW 2006, Australia; (E.W.); (A.E.P.); (C.Y.L.); (H.Y.K.); (S.L.S.)
- Department of Pharmacy, Royal Prince Alfred Hospital, Sydney, NSW 2050, Australia
| | - Christine Y. Lu
- Faculty of Medicine and Health, School of Pharmacy, The University of Sydney, Sydney, NSW 2006, Australia; (E.W.); (A.E.P.); (C.Y.L.); (H.Y.K.); (S.L.S.)
- Department of Pharmacy, Royal North Shore Hospital, Sydney, NSW 2065, Australia
- Kolling Institute, Faculty of Medicine and Health, The University of Sydney, The Northern Sydney Local Health District, Sydney, NSW 2065, Australia
| | - Hannah Yejin Kim
- Faculty of Medicine and Health, School of Pharmacy, The University of Sydney, Sydney, NSW 2006, Australia; (E.W.); (A.E.P.); (C.Y.L.); (H.Y.K.); (S.L.S.)
- Department of Pharmacy, Westmead Hospital, Sydney, NSW 2145, Australia
- Sydney Institute for Infectious Diseases, The University of Sydney, Sydney, NSW 2145, Australia
| | - Sophie L. Stocker
- Faculty of Medicine and Health, School of Pharmacy, The University of Sydney, Sydney, NSW 2006, Australia; (E.W.); (A.E.P.); (C.Y.L.); (H.Y.K.); (S.L.S.)
- Department of Pharmacy, Westmead Hospital, Sydney, NSW 2145, Australia
- Sydney Institute for Infectious Diseases, The University of Sydney, Sydney, NSW 2145, Australia
- Department of Clinical Pharmacology and Toxicology, St. Vincent’s Hospital, Sydney, NSW 2010, Australia
| | - Jan-Willem C. Alffenaar
- Faculty of Medicine and Health, School of Pharmacy, The University of Sydney, Sydney, NSW 2006, Australia; (E.W.); (A.E.P.); (C.Y.L.); (H.Y.K.); (S.L.S.)
- Department of Pharmacy, Westmead Hospital, Sydney, NSW 2145, Australia
- Sydney Institute for Infectious Diseases, The University of Sydney, Sydney, NSW 2145, Australia
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14
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Beeton K, Mitra D, Akinleye AA, Howell JA, Yu CS, Bidwell GL, Tandon R. An Elastin-like Polypeptide-fusion peptide targeting capsid-tegument interface as an antiviral against cytomegalovirus infection. Sci Rep 2024; 14:10253. [PMID: 38704431 PMCID: PMC11069587 DOI: 10.1038/s41598-024-60691-6] [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: 08/31/2023] [Accepted: 04/26/2024] [Indexed: 05/06/2024] Open
Abstract
The tegument protein pp150 of Human Cytomegalovirus (HCMV) is known to be essential for the final stages of virus maturation and mediates its functions by interacting with capsid proteins. Our laboratory has previously identified the critical regions in pp150 important for pp150-capsid interactions and designed peptides similar in sequence to these regions, with a goal to competitively inhibit capsid maturation. Treatment with a specific peptide (PepCR2 or P10) targeted to pp150 conserved region 2 led to a significant reduction in murine CMV (MCMV) growth in cell culture, paving the way for in vivo testing in a mouse model of CMV infection. However, the general pharmacokinetic parameters of peptides, including rapid degradation and limited tissue and cell membrane permeability, pose a challenge to their successful use in vivo. Therefore, we designed a biopolymer-stabilized elastin-like polypeptide (ELP) fusion construct (ELP-P10) to enhance the bioavailability of P10. Antiviral efficacy and cytotoxic effects of ELP-P10 were studied in cell culture, and pharmacokinetics, biodistribution, and antiviral efficacy were studied in a mouse model of CMV infection. ELP-P10 maintained significant antiviral activity in cell culture, and this conjugation significantly enhanced P10 bioavailability in mouse tissues. The fluorescently labeled ELP-P10 accumulated to higher levels in mouse liver and kidneys as compared to the unconjugated P10. Moreover, viral titers from vital organs of MCMV-infected mice indicated a significant reduction of virus load upon ELP-P10 treatment. Therefore, ELP-P10 has the potential to be developed into an effective antiviral against CMV infection.
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Affiliation(s)
- Komal Beeton
- Department of Cell and Molecular Biology, Center for Immunology and Microbial Research, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
| | - Dipanwita Mitra
- Department of Cell and Molecular Biology, Center for Immunology and Microbial Research, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
| | - Adesanya A Akinleye
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
| | - John A Howell
- Department of Neurology, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
| | - Christian S Yu
- Department of Cell and Molecular Biology, Center for Immunology and Microbial Research, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
| | - Gene L Bidwell
- Department of Cell and Molecular Biology, Center for Immunology and Microbial Research, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
- Department of Neurology, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
| | - Ritesh Tandon
- Department of Cell and Molecular Biology, Center for Immunology and Microbial Research, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA.
- Office of Research Infrastructure Programs, National Institute of Health, 6701 Democracy Blvd., Bethesda, MD, 20892, USA.
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15
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Sharma H, Mossman K, Austin RC. Fatal attractions that trigger inflammation and drive atherosclerotic disease. Eur J Clin Invest 2024; 54:e14169. [PMID: 38287209 DOI: 10.1111/eci.14169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/14/2023] [Accepted: 01/09/2024] [Indexed: 01/31/2024]
Abstract
BACKGROUND Atherosclerosis is the salient, underlying cause of cardiovascular diseases, such as arrhythmia, coronary artery disease, cardiomyopathy, pulmonary embolism and myocardial infarction. In recent years, atherosclerosis pathophysiology has evolved from a lipid-based to an inflammation-centric ideology. METHODS This narrative review is comprised of review and original articles that were found through the PubMed search engine. The following search terms or amalgamation of terms were used: "cardiovascular disease," "atherosclerosis," "inflammation," "GRP78," "Hsp60," "oxidative low-density lipoproteins," "aldehyde dehydrogenase," "β2-glycoprotein," "lipoprotein lipase A," "human cytomegalovirus." "SARS-CoV-2," "chlamydia pneumonia," "autophagy," "thrombosis" and "therapeutics." RESULTS Emerging evidence supports the concept that atherosclerosis is associated with the interaction between cell surface expression of stress response chaperones, including GRP78 and Hsp60, and their respective autoantibodies. Moreover, various other autoantigens and their autoantibodies have displayed a compelling connection with the development of atherosclerosis, including oxidative low-density lipoproteins, aldehyde dehydrogenase, β2-glycoprotein and lipoprotein lipase A. Atherosclerosis progression is also concurrent with viral and bacterial activators of various diseases. This narrative review will focus on the contributions of human cytomegalovirus as well as SARS-CoV-2 and chlamydia pneumonia in atherosclerosis development. Notably, the interaction of an autoantigen with their respective autoantibodies or the presence of a foreign antigen can enhance inflammation development, which leads to atherosclerotic lesion progression. CONCLUSION We will highlight and discuss the complex role of the interaction between autoantigens and autoantibodies, and the presence of foreign antigens in the development of atherosclerotic lesions in relationship to pro-inflammatory responses.
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Affiliation(s)
- Hitesh Sharma
- Division of Nephrology, Department of Medicine, McMaster University, The Research Institute of St. Joe's Hamilton and the Hamilton Centre for Kidney Research, Hamilton, Ontario, Canada
| | - Karen Mossman
- Department of Medicine, Michael DeGroote Institute for Infectious Disease Research and the McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Richard C Austin
- Division of Nephrology, Department of Medicine, McMaster University, The Research Institute of St. Joe's Hamilton and the Hamilton Centre for Kidney Research, Hamilton, Ontario, Canada
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16
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Su L, Chen Y, Fu M, Wang H, Tong Y, Lin Z, Chen H, Lin H, Chen Y, Zhu B, Ma S, Xiao Y, Huang J, Zhao Z, Li F, Ye R, Shi H, Wang Z, Zeng J, Wen Z, Luo M, Xia H, Zhang R. CD14 facilitates perinatal human cytomegalovirus infection in biliary epithelial cells via CD55. JHEP Rep 2024; 6:101018. [PMID: 38601478 PMCID: PMC11002872 DOI: 10.1016/j.jhepr.2024.101018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 11/28/2023] [Accepted: 01/08/2024] [Indexed: 04/12/2024] Open
Abstract
Background & Aims A high human cytomegalovirus (HCMV) infection rate accompanied by an increased level of bile duct damage is observed in the perinatal period. The possible mechanism was investigated. Methods A total of 1,120 HCMV-positive and 9,297 HCMV-negative children were recruited, and depending on age, their liver biochemistry profile was compared. Fetal and infant biliary epithelial cells (F-BECs and I-BECs, respectively) were infected with HCMV, and the differences in cells were revealed by proteomic analysis. Protein-protein interactions were examined by coimmunoprecipitation and mass spectrometry analyses. A murine cytomegalovirus (MCMV) infection model was established to assess treatment effects. Results Perinatal HCMV infection significantly increased the level of bile duct damage. Neonatal BALB/c mice inoculated with MCMV showed obvious inflammation in the portal area with an abnormal bile duct structure. Proteomics analysis showed higher CD14 expression in F-BECs than in I-BECs. CD14 siRNA administration hindered HCMV infection, and CD14-knockout mice showed lower MCMV-induced bile duct damage. HCMV infection upregulated CD55 and poly ADP-ribose polymerase-1 (PARP-1) expression in F-BECs. Coimmunoprecipitation and mass spectrometry analyses revealed formation of the CD14-CD55 complex. siRNA-mediated inhibition of CD55 expression reduced sCD14-promoted HCMV replication in F-BECs. In MCMV-infected mice, anti-mouse CD14 antibody and PARP-1 inhibitor treatment diminished cell death, ameliorated bile duct damage, and reduced mortality. Conclusions CD14 facilitates perinatal HCMV infection in BECs via CD55, and PARP-1-mediated cell death was detected in perinatal cytomegalovirus-infected BECs. These results provide new insight into the treatment of perinatal HCMV infection with bile duct damage. Impact and implications Perinatal human cytomegalovirus (HCMV) infection is associated with bile duct damage, but the underlying mechanism is still unknown. We discovered that CD14 expression is increased in biliary epithelial cells during perinatal HCMV infection and facilitates viral entry through CD55. We also detected PARP-1-mediated cell death in perinatal HCMV-infected biliary epithelial cells. We showed that blocking CD14 or inhibiting PARP-1 reduced bile duct damage and mortality in a mouse model of murine cytomegalovirus infection. Our findings provide a new insight into therapeutic strategies for perinatal HCMV infection.
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Affiliation(s)
- Liang Su
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
- Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Yan Chen
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
- Faculty of Medicine, Macau University of Science and Technology, Macau SAR, China
| | - Ming Fu
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
- Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Hezhen Wang
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Yanlu Tong
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Zefeng Lin
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Hongjiao Chen
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Huiting Lin
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Yi Chen
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Bing Zhu
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Sige Ma
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Yiyi Xiao
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Junyu Huang
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Ziyang Zhao
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Fenjie Li
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Rongchen Ye
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Hongguang Shi
- Department of Pediatric Surgery, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhe Wang
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Jixiao Zeng
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Zhe Wen
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Minhua Luo
- Faculty of Medicine, Macau University of Science and Technology, Macau SAR, China
| | - Huimin Xia
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Ruizhong Zhang
- Provincial Key Laboratory of Research in Structure Birth Defect Disease and Department of Pediatric Surgery, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
- Department of Pediatric Surgery, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Reynders M, Kerkhofs K, Heyndrickx A, Noerens K, Foulon I. Neurodevelopmental impact of congenital cytomegalovirus in children with cochlear implants. Int J Pediatr Otorhinolaryngol 2024; 180:111939. [PMID: 38631258 DOI: 10.1016/j.ijporl.2024.111939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 02/15/2024] [Accepted: 04/01/2024] [Indexed: 04/19/2024]
Affiliation(s)
- Marie Reynders
- Department of Otorhinolaryngology and Head & Neck Surgery, Vrije Universiteit Brussels, University Hospital UZ Brussel, Brussels Health Campus, Belgium.
| | | | | | | | - Ina Foulon
- Department of Otorhinolaryngology and Head & Neck Surgery, Vrije Universiteit Brussels, University Hospital UZ Brussel, Brussels Health Campus, Belgium; De Poolster, Rehabilitation Centre, Brussels, Belgium
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18
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Momayaz Sanat Z, Siami Z, Alatab S, Vahedi H, Fanni Z. Cytomegalovirus Infection in Adult Patients with Inflammatory Bowel Disease: A Literature Review. ARCHIVES OF IRANIAN MEDICINE 2024; 27:277-286. [PMID: 38690795 PMCID: PMC11097322 DOI: 10.34172/aim.2024.40] [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: 09/25/2023] [Accepted: 03/13/2024] [Indexed: 05/03/2024]
Abstract
Human cytomegalovirus (HCMV) is classified within the Herpesvirales order and is prevalent in 50%‒80% of the general population. Most carriers experience this infection without noticeable clinical symptoms. HCMV causes a lifelong latent infection that can be reactivated due to immune disorders and inflammation. The reactivation of HCMV becomes particularly significant when it coincides with inflammatory bowel disease (IBD). While cytomegalovirus (CMV) colitis in IBD patients was identified years ago, the role of CMV in triggering flare-ups, acute severe colitis, treatment resistance, and other outcomes in IBD patients experiencing CMV reactivation remains a subject of ongoing debate. In this review, we aim to address an updated insight into aspects related to the CMV colitis in IBD patients including epidemiology, risk factors, clinical features, diagnostic tests, histology, place of immunosuppressants and indications for antiviral treatment. We suggest for personalized and thorough assessment based on the disease phase and colitis severity when prescribing drugs to these patients. Furthermore, we emphasize the importance of regular patient follow-up to monitor drug side effects, ensuring treatment success, and minimizing the risk of colectomy.
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Affiliation(s)
- Zahra Momayaz Sanat
- Digestive Disease Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Zeinab Siami
- Department of Infectious Disease, School of Medicine, Ziaeian hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Sudabeh Alatab
- Digestive Disease Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Homayoon Vahedi
- Digestive Disease Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Zeinab Fanni
- Ziaeian Hospital, Tehran university of Medical Sciences, Tehran, Iran
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19
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Coupland L, Woodward K, Dervisevic S, Hale R, Brolly S. Analytical and Clinical Performance of the NeuMoDx™ Platform for Cytomegalovirus and Epstein-Barr Virus Viral Load Testing. Viruses 2024; 16:671. [PMID: 38793553 PMCID: PMC11125657 DOI: 10.3390/v16050671] [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: 02/15/2024] [Revised: 04/11/2024] [Accepted: 04/19/2024] [Indexed: 05/26/2024] Open
Abstract
DNA assays for viral load (VL) monitoring are key tools in the management of immunocompromised patients with cytomegalovirus (CMV) or Epstein-Barr virus (EBV) infection. In this study, the analytical and clinical performances of the NeuMoDx™ CMV and EBV Quant Assays were compared with artus CMV and EBV QS-RGQ Kits in a primary hospital testing laboratory. Patient plasma samples previously tested using artus kits were randomly selected for testing by NeuMoDx assays. The NeuMoDx CMV Quant Assay and artus CMV QS-RGQ Kit limits of detection (LoDs) are 20.0 IU/mL and 69.7 IU/mL, respectively; 33/75 (44.0%) samples had CMV DNA levels above the LoD of both assays. The Pearson correlation coefficient was 0.9503; 20 samples (60.6%) had lower NeuMoDx CMV quantification values versus the artus kit. The LoD of the NeuMoDx EBV Quant Assay and artus EBV QS-RGQ Kit are 200 IU/mL and 22.29 IU/mL, respectively; 16/75 (21.3%) samples had EBV DNA levels above the LoD of both assays. The Pearson correlation coefficient was 0.8990. EBV quantification values with the NeuMoDx assay were higher versus the artus kit in 15 samples (93.8%). In conclusion, NeuMoDx CMV and EBV Quant Assays are sensitive and accurate tools for CMV and EBV DNA VL quantification.
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Affiliation(s)
- Lindsay Coupland
- Microbiology Department, Eastern Pathology Alliance, Norfolk and Norwich University Hospital NHS Foundation Trust, NRP Innovation Centre, Norwich Research Park, Colney, Norwich NR4 7GJ, UK; (K.W.); (S.D.); (R.H.); (S.B.)
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20
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Tynior W, Świętek A, Hudy D, Ilczuk-Rypuła D, Strzelczyk JK. Molecular Detection of HPV, EBV, HSV-1, HCMV, and H. pylori Pathogens: An Evaluation among Polish Children with Molar Incisor Hypomineralization (MIH). Pathogens 2024; 13:345. [PMID: 38668300 PMCID: PMC11054144 DOI: 10.3390/pathogens13040345] [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: 02/19/2024] [Revised: 04/17/2024] [Accepted: 04/18/2024] [Indexed: 04/29/2024] Open
Abstract
Molar incisor hypomineralization (MIH) is a congenital disorder of the enamel tissue, characterized by a quantitative deficiency. In childhood, infections such as EBV, HSV-1, HCMV, or H. pylori may occur and cause various diseases. This study aimed to investigate the prevalence of HPV, EBV, HSV-1, HCMV, and H. pylori infections in two groups of children: children with molar incisor hypomineralization (MIH) and a control group, using molecular methods. The study group included 47 children aged between 6-13 years who had been diagnosed with MIH. The control group consisted of 42 children. The study found that, in the MIH group, the prevalence of HPV-16 was 6.38%, HPV-18 was 4.26%, EBV was 31.91%, HSV-1 was 4.26%, HCMV was 4.26%, and H. pylori was 12.77%. There were no significant differences in the prevalence of any of tested pathogens between the study and the control group (p > 0.05). However, the study found a higher prevalence of EBV infection in children who had smallpox/pneumonia by the age of 3 years. Ten children were found to have at least two pathogens present. Moreover, both groups had a high prevalence and activity of EBV. These findings provide new insights into the carriage of pathogens among children with MIH, providing new information for parents, scientists, and healthcare professionals.
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Affiliation(s)
- Wojciech Tynior
- Department of Medical and Molecular Biology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 19 Jordana St., 41-808 Zabrze, Poland
| | - Agata Świętek
- Department of Medical and Molecular Biology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 19 Jordana St., 41-808 Zabrze, Poland
- Silesia LabMed Research and Implementation Centre, Medical University of Silesia in Katowice, 19 Jordana St., 41-808 Zabrze, Poland
| | - Dorota Hudy
- Department of Medical and Molecular Biology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 19 Jordana St., 41-808 Zabrze, Poland
| | - Danuta Ilczuk-Rypuła
- Department of Pediatric Dentistry, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 2 Traugutta Sq, 41-800 Zabrze, Poland
| | - Joanna Katarzyna Strzelczyk
- Department of Medical and Molecular Biology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 19 Jordana St., 41-808 Zabrze, Poland
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21
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Wu K, Hou YJ, Makrinos D, Liu R, Zhu A, Koch M, Yu WH, Paila YD, Chandramouli S, Panther L, Henry C, DiPiazza A, Carfi A. Characterization of humoral and cellular immunologic responses to an mRNA-based human cytomegalovirus vaccine from a phase 1 trial of healthy adults. J Virol 2024; 98:e0160323. [PMID: 38526054 PMCID: PMC11019844 DOI: 10.1128/jvi.01603-23] [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: 10/13/2023] [Accepted: 01/25/2024] [Indexed: 03/26/2024] Open
Abstract
mRNA-1647 is an investigational mRNA-based vaccine against cytomegalovirus (CMV) that contains sequences encoding the CMV proteins glycoprotein B and pentamer. Humoral and cellular immune responses were evaluated in blood samples collected from healthy CMV-seropositive and CMV-seronegative adults who participated in a phase 1 trial of a three-dose series of mRNA-1647 (NCT03382405). Neutralizing antibody (nAb) titers against fibroblast and epithelial cell infection in sera from CMV-seronegative mRNA-1647 recipients were higher than those in sera from control CMV-seropositive samples and remained elevated up to 12 months after dose 3. nAb responses elicited by mRNA-1647 were comparable across 14 human CMV (HCMV) strains. Frequencies of antigen-specific memory B cells increased in CMV-seropositive and CMV-seronegative participants after each mRNA-1647 dose and remained elevated for up to 6 months after dose 3. mRNA-1647 elicited robust increases in frequencies and polyfunctionality of CD4+ T helper type 1 and effector CD8+ T cells in samples from CMV-seronegative and CMV-seropositive participants after stimulation with HCMV-specific peptides. The administration of three doses of mRNA-1647 to healthy adults elicited high nAb titers with wide-breadth, long-lasting memory B cells, and strong polyfunctional T-cell responses. These findings support further clinical development of the mRNA-1647 vaccine against CMV.IMPORTANCECytomegalovirus (CMV), a common virus that can infect people of all ages, may lead to serious health problems in unborn babies and those with a weakened immune system. Currently, there is no approved vaccine available to prevent CMV infection; however, the investigational messenger RNA (mRNA)-based CMV vaccine, mRNA-1647, is undergoing evaluation in clinical trials. The current analysis examined samples from a phase 1 trial of mRNA-1647 in healthy adults to better understand how the immune system reacts to vaccination. Three doses of mRNA-1647 produced a long-lasting immune response, thus supporting further investigation of the vaccine in the prevention of CMV infection.CLINICAL TRIALSRegistered at ClinicalTrials.gov (NCT03382405).
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Affiliation(s)
- Kai Wu
- Infectious Disease Research, Moderna, Inc., Cambridge, Massachusetts, USA
| | - Yixuan Jacob Hou
- Infectious Disease Research, Moderna, Inc., Cambridge, Massachusetts, USA
| | - Dan Makrinos
- Infectious Disease Research, Moderna, Inc., Cambridge, Massachusetts, USA
| | - Runxia Liu
- Infectious Disease Research, Moderna, Inc., Cambridge, Massachusetts, USA
| | - Alex Zhu
- Infectious Disease Research, Moderna, Inc., Cambridge, Massachusetts, USA
| | - Matthew Koch
- Infectious Disease Research, Moderna, Inc., Cambridge, Massachusetts, USA
| | - Wen-Han Yu
- Infectious Disease Research, Moderna, Inc., Cambridge, Massachusetts, USA
| | - Yamuna D. Paila
- Infectious Disease Development, Moderna, Inc., Cambridge, Massachusetts, USA
| | | | - Lori Panther
- Infectious Disease Development, Moderna, Inc., Cambridge, Massachusetts, USA
| | - Carole Henry
- Infectious Disease Research, Moderna, Inc., Cambridge, Massachusetts, USA
| | - Anthony DiPiazza
- Infectious Disease Research, Moderna, Inc., Cambridge, Massachusetts, USA
| | - Andrea Carfi
- Infectious Disease Research, Moderna, Inc., Cambridge, Massachusetts, USA
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22
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Shin K, Seong GM, Yoo JR, Kim ET. Rapid and sensitive point-of-care diagnosis of human cytomegalovirus infection using RPA-CRISPR technology. Heliyon 2024; 10:e28726. [PMID: 38586394 PMCID: PMC10998215 DOI: 10.1016/j.heliyon.2024.e28726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 03/20/2024] [Accepted: 03/22/2024] [Indexed: 04/09/2024] Open
Abstract
Background Human cytomegalovirus (HCMV) is a common herpesvirus that can cause a range of symptoms, from mild conditions such as fevers to severe illnesses like pneumonia. Early and accurate diagnosis of HCMV infection is crucial, particularly for vulnerable populations with limited medical care. However, current diagnostic methods are often expensive, time-consuming, and require skilled technicians. Materials and methods We developed an HCMV-RPA-CRISPR diagnosis platform for the rapid and cost-effective detection of HCMV infection. This method utilizes recombinase polymerase amplification (RPA) to amplify the HCMV target gene isothermally without the need for thermal cycling equipment. The platform integrates the CRISPR/Cas12a system, significantly enhancing specificity and sensitivity. A total of 13 clinical blood samples were tested to evaluate the platform's effectiveness and accuracy. Additionally, a lateral flow assay (LFA) and fluorescence detection were incorporated for straightforward and rapid visual interpretation of the results. Results The assay effectively detected concentrations as low as a single copy of the positive control plasmid per microliter in under 1 h, without requiring specialized equipment or training. In clinical sample evaluations, both the fluorescence readout and LFA exhibited 100% sensitivity and specificity, identifying four HCMV-positive and nine HCMV-negative samples. Conclusion The HCMV-RPA-CRISPR diagnosis platform is comparably effective to qPCR for HCMV diagnosis. Its applicability in common clinical laboratories, clinics, and point-of-care settings, particularly in resource-limited environments, makes it a valuable tool for widespread HCMV screening and diagnosis.
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Affiliation(s)
- Kihye Shin
- Department of Microbiology and Immunology, Jeju National University College of Medicine, Jeju, Republic of Korea
- Jeju Research Center for Natural Medicine, Jeju National University Core Research Institute, Jeju, Republic of Korea
| | - Gil Myeong Seong
- Department of Internal Medicine, Jeju National University College of Medicine, Jeju, Republic of Korea
- Department of Internal Medicine, Jeju National University Hospital, Jeju, Republic of Korea
| | - Jeong Rae Yoo
- Department of Internal Medicine, Jeju National University College of Medicine, Jeju, Republic of Korea
- Department of Internal Medicine, Jeju National University Hospital, Jeju, Republic of Korea
| | - Eui Tae Kim
- Department of Microbiology and Immunology, Jeju National University College of Medicine, Jeju, Republic of Korea
- Department of Biomedicine & Drug Development, Jeju National University Graduate School, Jeju, Republic of Korea
- Jeju Research Center for Natural Medicine, Jeju National University Core Research Institute, Jeju, Republic of Korea
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23
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Valente-Acosta B, Moreno-Sánchez F, Neme-Yunes Y, López-Rueda S, Hoyo-Ulloa I, Garcia-Gutierrez M. Concomitant Cytomegalovirus Viraemia in Multisystem Inflammatory Syndrome in Adults (MIS-A) following COVID-19. Case Rep Infect Dis 2024; 2024:8852063. [PMID: 38590710 PMCID: PMC11001470 DOI: 10.1155/2024/8852063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 03/18/2024] [Accepted: 03/25/2024] [Indexed: 04/10/2024] Open
Abstract
Multisystem inflammatory syndrome in adults (MIS-A) is recognised as an infrequent complication of coronavirus disease 2019 (COVID-19). This syndrome occurs following COVID-19 infection in some individuals and is characterised by inflammation of multiple organ systems, such as the heart, liver, bowel, and lymph nodes. Cytomegalovirus (CMV) viraemia is associated primarily with immunosuppression. In COVID-19 patients, it has been reported in severe and critical cases. We present a case of an adult patient diagnosed with MIS-A and concomitant CMV viraemia.
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Affiliation(s)
- Benjamin Valente-Acosta
- The American British Cowdray Medical Center, Sur 136 116, Alvaro Obregon, Mexico City 01120, Mexico
| | - Francisco Moreno-Sánchez
- The American British Cowdray Medical Center, Sur 136 116, Alvaro Obregon, Mexico City 01120, Mexico
| | - Yvette Neme-Yunes
- The American British Cowdray Medical Center, Sur 136 116, Alvaro Obregon, Mexico City 01120, Mexico
| | - Sara López-Rueda
- The American British Cowdray Medical Center, Sur 136 116, Alvaro Obregon, Mexico City 01120, Mexico
| | - Irma Hoyo-Ulloa
- The American British Cowdray Medical Center, Sur 136 116, Alvaro Obregon, Mexico City 01120, Mexico
| | - Mónica Garcia-Gutierrez
- The American British Cowdray Medical Center, Sur 136 116, Alvaro Obregon, Mexico City 01120, Mexico
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24
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Hunter-Schlichting DN, Vogel RI, Geller MA, Nelson HH. Quantification of low-level human cytomegalovirus and Epstein-Barr virus DNAemia by digital PCR. J Virol Methods 2024; 325:114876. [PMID: 38184072 DOI: 10.1016/j.jviromet.2023.114876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/13/2023] [Accepted: 12/31/2023] [Indexed: 01/08/2024]
Abstract
BACKGROUND Digital PCR (dPCR) can quantify cell-free viral DNA (DNAemia), a biomarker of active viral infection. To accelerate epidemiologic investigation into low-level viral reactivation in chronic disease, we have evaluated the performance of dPCR to detect cytomegalovirus (CMV) and Epstein-Barr virus (EBV) DNAemia across platforms and blood matrices. METHODS The droplet-based (BioRad) dPCR platform performance was compared to chip-based (BioMark), and assay validation followed dMIQE guidelines. CMV and EBV DNA reference materials were spiked into known negative plasma and serum samples. In addition, two independent cohorts of ovarian cancer patients were evaluated for viral DNAemia (n = 65 serum and 79 plasma samples). RESULTS The limit of quantification (LOQ) was at or slightly above 100 copies/mL for both instruments: 105-135 copies/mL for droplet-based detection and 100 copies/mL for chip-based detection. DNAemia in serum had a slightly lower LOQ (105-110 copies/mL) compared to plasma (LOQ; 115-135 copies/mL). The variation (CV) coefficients for each assay and machine were less than 5 %. In patient samples, CVs ranged from 4.5 - 7.4 % and were similar for cell-free DNA derived from serum or plasma. There was good correlation between DNAemia measurements in patient samples across dPCR platforms (r > 0.90 for each assay and matrix). CONCLUSION dPCR can quantify low-level herpes virus DNAemia with CVs below 8 %. Our results indicate that using serum-derived cell-free DNA and droplet-based dPCR is optimal for quantitating low-level viral DNAemia; however, plasma and chip-based approaches are acceptable alternatives and suitable for epidemiologic investigation.
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Affiliation(s)
- DeVon N Hunter-Schlichting
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, United States; Division of Epidemiology and Clinical Research, University of Minnesota, Minneapolis, MN, United States
| | - Rachel I Vogel
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, United States; Department of Obstetrics, Gynecology and Women's Health, School of Medicine, University of Minnesota, Minneapolis, MN, United States
| | - Melissa A Geller
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, United States; Department of Obstetrics, Gynecology and Women's Health, School of Medicine, University of Minnesota, Minneapolis, MN, United States
| | - Heather H Nelson
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, United States; Division of Epidemiology and Clinical Research, University of Minnesota, Minneapolis, MN, United States.
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25
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Deng R, Yuan G, Ye Y, Luo W, Zhong J, Wang H, Wei X, Luo X, Xiong A. Qualitative evaluation of connective tissue disease with cytomegalovirus infection: A meta-analysis of case reports. Semin Arthritis Rheum 2024; 65:152396. [PMID: 38340610 DOI: 10.1016/j.semarthrit.2024.152396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 01/24/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024]
Abstract
BACKGROUND The primary therapies for connective tissue disease include glucocorticoids and immunosuppressants. However, their prolonged usage can precipitate opportunistic infections, such as cytomegalovirus infection. When managing connective tissue disease complicated by cytomegalovirus infection, judicious selection of treatment modalities is crucial. This involves assessing the necessity for antiviral therapy and contemplating the reduction or cessation of glucocorticoids and immunosuppressants. OBJECTIVE This investigation sought to methodically review existing literature regarding treating connective tissue disease patients with cytomegalovirus infection. METHODS On July 5, 2023, an exhaustive literature search was conducted. Data analysis utilized the Kruskal-Wallis test or one-way analysis of variance, supplemented by Bonferroni post hoc testing. RESULTS Our meta-analysis incorporated 88 studies encompassing 146 connective tissue disease patients with CMV infections. The results indicated that patients with connective tissue disease and cytomegalovirus disease benefitted more from antiviral therapy than those not receiving such treatment (P = 0.003, P < 0.005). Furthermore, the strategic reduction of glucocorticoids and/or immunosuppressants was beneficial (P = 0.037, P < 0.05). Poor clinical outcomes with glucocorticoid-immunosuppressant combination therapy compared to other treatment modalities. The findings also suggested that CMV infection patients fare better without Cyclosporine A than using it (P = 0.041, P < 0.05). CONCLUSION Antiviral therapy is a viable treatment option in cases of connective tissue disease co-occurring with cytomegalovirus disease. Additionally, when connective tissue disease is stable, there is potential merit in reducing glucocorticoids and/or immunosuppressants, especially avoiding the combination of these drugs. For all cytomegalovirus infection patients, Cyclosporine A may be avoided wherever possible for selecting immunosuppressive agents if its use is not deemed essential in the treatment regimen.
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Affiliation(s)
- Ruiting Deng
- Department of Rheumatology and Immunology, Nanchong Central Hospital, The Affiliated Nanchong Central Hospital of North Sichuan Medical College, Nanchong Hospital of Beijing Anzhen Hospital Capital Medical University, Nanchong, Sichuan, China
| | - Gaodi Yuan
- Department of Rheumatology and Immunology, Nanchong Central Hospital, The Affiliated Nanchong Central Hospital of North Sichuan Medical College, Nanchong Hospital of Beijing Anzhen Hospital Capital Medical University, Nanchong, Sichuan, China
| | - Yiman Ye
- Department of Rheumatology and Immunology, Nanchong Central Hospital, The Affiliated Nanchong Central Hospital of North Sichuan Medical College, Nanchong Hospital of Beijing Anzhen Hospital Capital Medical University, Nanchong, Sichuan, China
| | - Wenxuan Luo
- Department of Rheumatology and Immunology, Nanchong Central Hospital, The Affiliated Nanchong Central Hospital of North Sichuan Medical College, Nanchong Hospital of Beijing Anzhen Hospital Capital Medical University, Nanchong, Sichuan, China
| | - Jiaxun Zhong
- Department of Rheumatology and Immunology, Nanchong Central Hospital, The Affiliated Nanchong Central Hospital of North Sichuan Medical College, Nanchong Hospital of Beijing Anzhen Hospital Capital Medical University, Nanchong, Sichuan, China
| | - Haolan Wang
- Department of Rheumatology and Immunology, Nanchong Central Hospital, The Affiliated Nanchong Central Hospital of North Sichuan Medical College, Nanchong Hospital of Beijing Anzhen Hospital Capital Medical University, Nanchong, Sichuan, China
| | - Xin Wei
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, China.
| | - Xiongyan Luo
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China.
| | - Anji Xiong
- Department of Rheumatology and Immunology, Nanchong Central Hospital, The Affiliated Nanchong Central Hospital of North Sichuan Medical College, Nanchong Hospital of Beijing Anzhen Hospital Capital Medical University, Nanchong, Sichuan, China; Inflammation and Immunology Key Laboratory of Nanchong City, Nanchong, Sichuan, China; Nanchong Central Hospital, (Nanchong Clinical Research Center), Nanchong, Sichuan, China.
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26
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Yll-Pico M, Park Y, Martinez J, Iniguez A, Kha M, Kim T, Medrano L, Nguyen VH, Kaltcheva T, Dempsey S, Chiuppesi F, Wussow F, Diamond DJ. Highly stable and immunogenic CMV T cell vaccine candidate developed using a synthetic MVA platform. NPJ Vaccines 2024; 9:68. [PMID: 38555379 PMCID: PMC10981716 DOI: 10.1038/s41541-024-00859-3] [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: 11/02/2023] [Accepted: 03/12/2024] [Indexed: 04/02/2024] Open
Abstract
Human cytomegalovirus (CMV) is the most common infectious cause of complications post-transplantation, while a CMV vaccine for transplant recipients has yet to be licensed. Triplex, a multiantigen Modified Vaccinia Ankara (MVA)-vectored CMV vaccine candidate based on the immunodominant antigens phosphoprotein 65 (pp65) and immediate-early 1 and 2 (IE1/2), is in an advanced stage of clinical development. However, its limited genetic and expression stability restricts its potential for large-scale production. Using a recently developed fully synthetic MVA (sMVA) platform, we developed a new generation Triplex vaccine candidate, T10-F10, with different sequence modifications for enhanced vaccine stability. T10-F10 demonstrated genetic and expression stability during extensive virus passaging. In addition, we show that T10-F10 confers comparable immunogenicity to the original Triplex vaccine to elicit antigen-specific T cell responses in HLA-transgenic mice. These results demonstrate improvements in translational vaccine properties of an sMVA-based CMV vaccine candidate designed as a therapeutic treatment for transplant recipients.
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Affiliation(s)
- Marcal Yll-Pico
- Department of Hematology and Transplant Center, City of Hope National Medical Center, Duarte, CA, USA.
| | - Yoonsuh Park
- Department of Hematology and Transplant Center, City of Hope National Medical Center, Duarte, CA, USA
| | - Joy Martinez
- Department of Hematology and Transplant Center, City of Hope National Medical Center, Duarte, CA, USA
| | - Angelina Iniguez
- Department of Hematology and Transplant Center, City of Hope National Medical Center, Duarte, CA, USA
| | - Mindy Kha
- Department of Hematology and Transplant Center, City of Hope National Medical Center, Duarte, CA, USA
| | - Taehyun Kim
- Department of Hematology and Transplant Center, City of Hope National Medical Center, Duarte, CA, USA
| | - Leonard Medrano
- Department of Hematology and Transplant Center, City of Hope National Medical Center, Duarte, CA, USA
| | - Vu H Nguyen
- Department of Hematology and Transplant Center, City of Hope National Medical Center, Duarte, CA, USA
| | - Teodora Kaltcheva
- Department of Hematology and Transplant Center, City of Hope National Medical Center, Duarte, CA, USA
| | - Shannon Dempsey
- Department of Hematology and Transplant Center, City of Hope National Medical Center, Duarte, CA, USA
| | - Flavia Chiuppesi
- Department of Hematology and Transplant Center, City of Hope National Medical Center, Duarte, CA, USA
| | - Felix Wussow
- Department of Hematology and Transplant Center, City of Hope National Medical Center, Duarte, CA, USA
| | - Don J Diamond
- Department of Hematology and Transplant Center, City of Hope National Medical Center, Duarte, CA, USA
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Vasiljevic T, Jankovic M, Tomic A, Bakrac I, Radenovic S, Miljanovic D, Knezevic A, Jovanovic T, Djunic I, Todorovic-Balint M. Significance of Cytomegalovirus gB Genotypes in Adult Patients Undergoing Hematopoietic Stem Cell Transplantation: Insights from a Single-Centre Investigation. Pharmaceuticals (Basel) 2024; 17:428. [PMID: 38675390 PMCID: PMC11054653 DOI: 10.3390/ph17040428] [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: 01/19/2024] [Revised: 02/26/2024] [Accepted: 03/19/2024] [Indexed: 04/28/2024] Open
Abstract
INTRODUCTION Cytomegalovirus (CMV) infection is a major clinical issue after allogeneic hematopoietic stem cell transplantation (HSCT). The CMV envelope glycoproteins are key in viral pathogenesis; the glycoprotein B (gB) encoded by the UL55 gene might be an important determinant of viral virulence and disease severity marker in patients treated with allogeneic HSCT. Our aim was to investigate the molecular diversity of CMV gB and inquire into the associations between UL55 gene variations and clinical manifestations in adult patients treated with allogeneic HSCT. RESULTS The most prevalent genotypes were gB1 and gB4 (11/27, 40.7%). Patients with genotype gB1 infection had earlier platelet engraftment (p < 0.033) and less frequent minimal/measurable residual disease post HSCT than those without this genotype. Patients with gB4 glycoprotein infection had a significantly lower CD4+/CD8+ ratio at D90 (p < 0.026). Interestingly, patients with gB5 glycoprotein infection had shorter overall survival from base condition diagnosis (p < 0.042), as well as shorter overall survival after HSCT (p < 0.036). Acute GvHD was noted more frequently in those with mixed-genotype infection (p = 0.047). MATERIAL AND METHODS The study included fifty-nine adult patients treated with allogeneic HSCT. Peripheral venous blood was sampled typically per week, with detection of CMV performed by quantitative real-time PCR. Multiplex nested PCR was used to determine specific gB genotypes, which were then statistically compared vis-à-vis specific clinical variables. CONCLUSIONS Our study points to variations in the viral UL55 locus imparting both beneficial (earlier platelet engraftment, less frequent MRD post HSCT) and adverse effects (shorter overall survival, more frequent acute GvHD, less frequent 100% chimerism at day 90) to the transplanted host. Comprehensive molecular investigations are necessary to validate this apparent duality, as the potential benefits of CMV could perhaps be utilized for the benefit of the patient in the future.
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Affiliation(s)
- Tamara Vasiljevic
- Faculty of Medicine, University of Belgrade, 8 Dr Subotica Street, 11000 Belgrade, Serbia; (T.V.); (I.B.); (S.R.); (D.M.); (A.K.); (I.D.); (M.T.-B.)
| | - Marko Jankovic
- Faculty of Medicine, University of Belgrade, 8 Dr Subotica Street, 11000 Belgrade, Serbia; (T.V.); (I.B.); (S.R.); (D.M.); (A.K.); (I.D.); (M.T.-B.)
- Department of Virology, Institute of Microbiology and Immunology, 1 Dr Subotica Street, 11000 Belgrade, Serbia
| | - Ana Tomic
- Faculty of Medicine, University of Belgrade, 8 Dr Subotica Street, 11000 Belgrade, Serbia; (T.V.); (I.B.); (S.R.); (D.M.); (A.K.); (I.D.); (M.T.-B.)
| | - Ida Bakrac
- Faculty of Medicine, University of Belgrade, 8 Dr Subotica Street, 11000 Belgrade, Serbia; (T.V.); (I.B.); (S.R.); (D.M.); (A.K.); (I.D.); (M.T.-B.)
| | - Stefan Radenovic
- Faculty of Medicine, University of Belgrade, 8 Dr Subotica Street, 11000 Belgrade, Serbia; (T.V.); (I.B.); (S.R.); (D.M.); (A.K.); (I.D.); (M.T.-B.)
| | - Danijela Miljanovic
- Faculty of Medicine, University of Belgrade, 8 Dr Subotica Street, 11000 Belgrade, Serbia; (T.V.); (I.B.); (S.R.); (D.M.); (A.K.); (I.D.); (M.T.-B.)
- Department of Virology, Institute of Microbiology and Immunology, 1 Dr Subotica Street, 11000 Belgrade, Serbia
| | - Aleksandra Knezevic
- Faculty of Medicine, University of Belgrade, 8 Dr Subotica Street, 11000 Belgrade, Serbia; (T.V.); (I.B.); (S.R.); (D.M.); (A.K.); (I.D.); (M.T.-B.)
- Department of Virology, Institute of Microbiology and Immunology, 1 Dr Subotica Street, 11000 Belgrade, Serbia
| | - Tanja Jovanovic
- Institute for Biocides and Medical Ecology, 16 Trebevicka Street, 11000 Belgrade, Serbia;
| | - Irena Djunic
- Faculty of Medicine, University of Belgrade, 8 Dr Subotica Street, 11000 Belgrade, Serbia; (T.V.); (I.B.); (S.R.); (D.M.); (A.K.); (I.D.); (M.T.-B.)
- Clinic of Haematology, University Clinical Centre of Serbia, University of Belgrade, 2 Dr Koste Todorovica Street, 11000 Belgrade, Serbia
| | - Milena Todorovic-Balint
- Faculty of Medicine, University of Belgrade, 8 Dr Subotica Street, 11000 Belgrade, Serbia; (T.V.); (I.B.); (S.R.); (D.M.); (A.K.); (I.D.); (M.T.-B.)
- Clinic of Haematology, University Clinical Centre of Serbia, University of Belgrade, 2 Dr Koste Todorovica Street, 11000 Belgrade, Serbia
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Chen H, Jian Z, Xu T, Xu L, Deng L, Shao L, Zhang L, He L, Li Y, Zhu L. Advances in the mechanism of inflammasomes activation in herpes virus infection. Front Immunol 2024; 15:1346878. [PMID: 38590522 PMCID: PMC10999540 DOI: 10.3389/fimmu.2024.1346878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 03/04/2024] [Indexed: 04/10/2024] Open
Abstract
Herpesviruses, prevalent DNA viruses with a double-stranded structure, establish enduring infections and play a part in various diseases. Despite their deployment of multiple tactics to evade the immune system, both localized and systemic inflammatory responses are triggered by the innate immune system's recognition of them. Recent progress has offered more profound understandings of the mechanisms behind the activation of the innate immune system by herpesviruses, specifically through inflammatory signaling. This process encompasses the initiation of an intracellular nucleoprotein complex, the inflammasome associated with inflammation.Following activation, proinflammatory cytokines such as IL-1β and IL-18 are released by the inflammasome, concurrently instigating a programmed pathway for cell death. Despite the structural resemblances between herpesviruses, the distinctive methods of inflammatory activation and the ensuing outcomes in diseases linked to the virus exhibit variations.The objective of this review is to emphasize both the similarities and differences in the mechanisms of inflammatory activation among herpesviruses, elucidating their significance in diseases resulting from these viral infections.Additionally, it identifies areas requiring further research to comprehensively grasp the impact of this crucial innate immune signaling pathway on the pathogenesis of these prevalent viruses.
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Affiliation(s)
- Hourui Chen
- 4+4 Medical Doctor Program, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Zhijie Jian
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Tong Xu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Lei Xu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Lishuang Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Lina Shao
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Leyi Zhang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Li He
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Youyou Li
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Ling Zhu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
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Quek ZBR, Ng SH. Hybrid-Capture Target Enrichment in Human Pathogens: Identification, Evolution, Biosurveillance, and Genomic Epidemiology. Pathogens 2024; 13:275. [PMID: 38668230 PMCID: PMC11054155 DOI: 10.3390/pathogens13040275] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/11/2024] [Accepted: 03/18/2024] [Indexed: 04/29/2024] Open
Abstract
High-throughput sequencing (HTS) has revolutionised the field of pathogen genomics, enabling the direct recovery of pathogen genomes from clinical and environmental samples. However, pathogen nucleic acids are often overwhelmed by those of the host, requiring deep metagenomic sequencing to recover sufficient sequences for downstream analyses (e.g., identification and genome characterisation). To circumvent this, hybrid-capture target enrichment (HC) is able to enrich pathogen nucleic acids across multiple scales of divergences and taxa, depending on the panel used. In this review, we outline the applications of HC in human pathogens-bacteria, fungi, parasites and viruses-including identification, genomic epidemiology, antimicrobial resistance genotyping, and evolution. Importantly, we explored the applicability of HC to clinical metagenomics, which ultimately requires more work before it is a reliable and accurate tool for clinical diagnosis. Relatedly, the utility of HC was exemplified by COVID-19, which was used as a case study to illustrate the maturity of HC for recovering pathogen sequences. As we unravel the origins of COVID-19, zoonoses remain more relevant than ever. Therefore, the role of HC in biosurveillance studies is also highlighted in this review, which is critical in preparing us for the next pandemic. We also found that while HC is a popular tool to study viruses, it remains underutilised in parasites and fungi and, to a lesser extent, bacteria. Finally, weevaluated the future of HC with respect to bait design in the eukaryotic groups and the prospect of combining HC with long-read HTS.
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Affiliation(s)
- Z. B. Randolph Quek
- Defence Medical & Environmental Research Institute, DSO National Laboratories, Singapore 117510, Singapore
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30
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Mokry RL, Monti CE, Rosas-Rogers S, Schumacher ML, Dash RK, Terhune SS. Replication efficiencies of human cytomegalovirus-infected epithelial cells are dependent on source of virus production. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.19.585739. [PMID: 38562837 PMCID: PMC10983881 DOI: 10.1101/2024.03.19.585739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Human cytomegalovirus (HCMV) is a prevalent betaherpesvirus, and infection can lead to a range of symptomatology from mononucleosis to sepsis in immunocompromised individuals. HCMV is also the leading viral cause of congenital birth defects. Lytic replication is supported by many cell types with different kinetics and efficiencies leading to a plethora of pathologies. The goal of these studies was to elucidate HCMV replication efficiencies for viruses produced on different cell types upon infection of epithelial cells by combining experimental approaches with data-driven computational modeling. HCMV was generated from a common genetic background of TB40-BAC4, propagated on fibroblasts (TB40Fb) or epithelial cells (TB40Epi), and used to infect epithelial cells. We quantified cell-associated viral genomes (vDNA), protein levels (pUL44, pp28), and cell-free titers over time for each virus at different multiplicities of infection. We combined experimental quantification with data-driven simulations and determined that parameters describing vDNA synthesis were similar between sources. We found that pUL44 accumulation was higher in TB40Fb than TB40Epi. In contrast, pp28 accumulation was higher in TB40Epi which coincided with a significant increase in titer for TB40Epi over TB40Fb. These differences were most evident during live-cell imaging, which revealed syncytia-like formation during infection by TB40Epi. Simulations of the late lytic replication cycle yielded a larger synthesis constant for pp28 in TB40Epi along with increase in virus output despite similar rates of genome synthesis. By combining experimental and computational modeling approaches, our studies demonstrate that the cellular source of propagated virus impacts viral replication efficiency in target cell types.
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Affiliation(s)
- Rebekah L. Mokry
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI-53226
| | - Christopher E. Monti
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI-53226
- Department of Biomedical Engineering, Medical College of Wisconsin, Milwaukee, WI-53226
| | - Suzette Rosas-Rogers
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI-53226
| | - Megan L. Schumacher
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI-53226
| | - Ranjan K. Dash
- Department of Biomedical Engineering, Medical College of Wisconsin, Milwaukee, WI-53226
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI-53226
| | - Scott S. Terhune
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI-53226
- Department of Biomedical Engineering, Medical College of Wisconsin, Milwaukee, WI-53226
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Puget L, Node J, Caël B, Bamoulid J, Coaquette A, Prétet JL, Lepiller Q. Urinary cytomegalovirus excretion: The unresolved issues. ANNALES PHARMACEUTIQUES FRANÇAISES 2024:S0003-4509(24)00039-7. [PMID: 38492661 DOI: 10.1016/j.pharma.2024.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 03/06/2024] [Accepted: 03/10/2024] [Indexed: 03/18/2024]
Abstract
Cytomegalovirus (CMV) excretion in urine is frequently observed in clinical practice. However, the specific circumstances and pathophysiological mechanisms underlying this shedding remain largely unknown. Here, we address some of the key questions regarding urinary CMV excretion, focusing on new hypotheses raised by recent advances in the field. Cellular origins of CMV shedding, clinical contexts of occurrence, systemic spread of the virus versus compartmentalization in the urinary tract, and clinical impact are successively discussed.
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Affiliation(s)
- Line Puget
- Laboratoire de virologie, CHU de Besançon, Besançon, France
| | - Juliette Node
- Laboratoire de virologie, CHU de Besançon, Besançon, France
| | - Blandine Caël
- Laboratoire d'auto-immunité et d'allergologie, CHU Besançon, Besançon, France
| | - Jamal Bamoulid
- Service de néphrologie, CHU de Besançon, Besançon, France
| | - Alain Coaquette
- Laboratoire d'auto-immunité et d'allergologie, CHU Besançon, Besançon, France
| | - Jean-Luc Prétet
- Laboratoire de biologie cellulaire, CHU de Besançon, Besançon, France; UMR 6249 Laboratoire chrono-environnement, CNRS-UFC, Besançon, France
| | - Quentin Lepiller
- Laboratoire de virologie, CHU de Besançon, Besançon, France; UMR 6249 Laboratoire chrono-environnement, CNRS-UFC, Besançon, France.
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de Sousa MV. Post-Transplant Glomerulonephritis: Challenges and Solutions. Int J Nephrol Renovasc Dis 2024; 17:81-90. [PMID: 38495741 PMCID: PMC10944656 DOI: 10.2147/ijnrd.s391779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 03/12/2024] [Indexed: 03/19/2024] Open
Abstract
Glomeruli can be damaged in several conditions after kidney transplantation, with a potential impact on the graft function and survival. Primary glomerulonephritis, a group of glomerular immunological damage that results in variable histological patterns and clinical phenotypes, can occur in kidney transplant recipients as a recurrent or de novo condition. Specific immunologic conditions associated with kidney transplantation, such as acute rejection episodes, can act as an additional trigger after transplantation, impacting the incidence of these glomerulopathies. The post-transplant GN recurrence ranges from 3% to 15%, varying according to the GN subtype and post-transplant time, mainly occurring after 3-5 years of kidney transplantation. Advances in the knowledge of glomerulonephritis pathophysiology have provided new approaches to pre-transplant risk evaluation and post-transplant monitoring. Glomeruli can be affected by several systemic viral infections, such as human immunodeficiency virus (HIV), hepatitis C virus (HCV), hepatitis B virus (HBV), severe acute respiratory syndrome coronavirus 2 (SARS-COV-2), cytomegalovirus (CMV), and BK virus. The diagnosis of these infections, as well as the identification of possible complications associated with them, are important to minimize the negative impacts of these conditions on kidney transplant recipients' outcomes.
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Affiliation(s)
- Marcos Vinicius de Sousa
- University of Campinas, School of Medical Sciences, Department of Internal Medicine, Division of Nephrology, Renal Transplant Unit, Transplant Research Laboratory, Campinas, SP, Brazil
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Yeh PJ, Wu RC, Tsou YK, Chen CM, Chiu CT, Chen CC, Lai MW, Pan YB, Le PH. Comparative Analysis of Cytomegalovirus Gastrointestinal Disease in Immunocompetent and Immunocompromised Patients. Viruses 2024; 16:452. [PMID: 38543817 PMCID: PMC10974964 DOI: 10.3390/v16030452] [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: 01/28/2024] [Revised: 03/06/2024] [Accepted: 03/11/2024] [Indexed: 05/23/2024] Open
Abstract
BACKGROUND Cytomegalovirus (CMV) gastrointestinal (GI) diseases impact both immunocompromised and immunocompetent individuals, yet comprehensive studies highlighting the differences between these groups are lacking. METHODS In this retrospective study (January 2000 to July 2022) of 401 patients with confirmed CMV GI diseases, we categorized them based on immunological status and compared manifestations, treatments, outcomes, and prognostic factors. RESULTS The immunocompromised patients (n = 193) showed older age, severe illnesses, and higher comorbidity rates. GI bleeding, the predominant manifestation, occurred more in the immunocompetent group (92.6% vs. 63.6%, p = 0.009). Despite longer antiviral therapy, the immunocompromised patients had higher in-hospital (32.2% vs. 18.9%, p = 0.034) and overall mortality rates (91.1% vs. 43.4%, p < 0.001). The independent factors influencing in-hospital mortality in the immunocompromised patients included GI bleeding (OR 5.782, 95% CI 1.257-26.599, p = 0.024) and antiviral therapy ≥ 14 days (OR 0.232, 95% CI 0.059-0.911, p = 0.036). In the immunocompetent patients, age (OR 1.08, 95% CI 1.006-1.159, p = 0.032), GI bleeding (OR 10.036, 95% CI 1.183-85.133, p = 0.035), and time to diagnosis (OR 1.029, 95% CI 1.004-1.055, p = 0.021) were significant prognostic factors, with the age and diagnosis time cut-offs for survival being 70 years and 31.5 days, respectively. CONCLUSIONS GI bleeding is the most common manifestation and prognostic factor in both groups. Early diagnosis and effective antiviral therapy can significantly reduce in-hospital mortality.
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Affiliation(s)
- Pai-Jui Yeh
- Department of Pediatric Gastroenterology, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; (P.-J.Y.); (C.-C.C.); (M.-W.L.)
- Inflammatory Bowel Disease Center, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; (R.-C.W.); (C.-M.C.); (C.-T.C.)
- Chang Gung Microbiota Therapy Center, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
- Translational Gastroenterology Unit, Nuffield Department of Medicine, University of Oxford, Oxford OX3 9DU, UK
| | - Ren-Chin Wu
- Inflammatory Bowel Disease Center, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; (R.-C.W.); (C.-M.C.); (C.-T.C.)
- Department of Anatomic Pathology, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Yung-Kuan Tsou
- Department of Gastroenterology and Hepatology, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan;
| | - Chien-Ming Chen
- Inflammatory Bowel Disease Center, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; (R.-C.W.); (C.-M.C.); (C.-T.C.)
- Department of Medical Imaging and Interventions, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Cheng-Tang Chiu
- Inflammatory Bowel Disease Center, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; (R.-C.W.); (C.-M.C.); (C.-T.C.)
- Chang Gung Microbiota Therapy Center, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
- Department of Gastroenterology and Hepatology, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan;
- Taiwan Association of the Study of Small Intestinal Disease, Taoyuan 333, Taiwan
| | - Chien-Chang Chen
- Department of Pediatric Gastroenterology, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; (P.-J.Y.); (C.-C.C.); (M.-W.L.)
- Inflammatory Bowel Disease Center, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; (R.-C.W.); (C.-M.C.); (C.-T.C.)
- Chang Gung Microbiota Therapy Center, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Ming-Wei Lai
- Department of Pediatric Gastroenterology, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; (P.-J.Y.); (C.-C.C.); (M.-W.L.)
- Inflammatory Bowel Disease Center, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; (R.-C.W.); (C.-M.C.); (C.-T.C.)
| | - Yu-Bin Pan
- Biostatistical Section, Clinical Trial Center, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan;
| | - Puo-Hsien Le
- Inflammatory Bowel Disease Center, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; (R.-C.W.); (C.-M.C.); (C.-T.C.)
- Chang Gung Microbiota Therapy Center, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
- Department of Gastroenterology and Hepatology, Linkou Chang Gung Memorial Hospital, Taoyuan 333, Taiwan;
- Taiwan Association of the Study of Small Intestinal Disease, Taoyuan 333, Taiwan
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Raviola S, Griffante G, Iannucci A, Chandel S, Lo Cigno I, Lacarbonara D, Caneparo V, Pasquero S, Favero F, Corà D, Trisolini E, Boldorini R, Cantaluppi V, Landolfo S, Gariglio M, De Andrea M. Human cytomegalovirus infection triggers a paracrine senescence loop in renal epithelial cells. Commun Biol 2024; 7:292. [PMID: 38459109 PMCID: PMC10924099 DOI: 10.1038/s42003-024-05957-5] [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: 07/09/2023] [Accepted: 02/22/2024] [Indexed: 03/10/2024] Open
Abstract
Human cytomegalovirus (HCMV) is an opportunistic pathogen causing severe diseases in immunosuppressed individuals. To replicate its double-stranded DNA genome, HCMV induces profound changes in cellular homeostasis that may resemble senescence. However, it remains to be determined whether HCMV-induced senescence contributes to organ-specific pathogenesis. Here, we show a direct cytopathic effect of HCMV on primary renal proximal tubular epithelial cells (RPTECs), a natural setting of HCMV disease. We find that RPTECs are fully permissive for HCMV replication, which endows them with an inflammatory gene signature resembling the senescence-associated secretory phenotype (SASP), as confirmed by the presence of the recently established SenMayo gene set, which is not observed in retina-derived epithelial (ARPE-19) cells. Although HCMV-induced senescence is not cell-type specific, as it can be observed in both RPTECs and human fibroblasts (HFFs), only infected RPTECs show downregulation of LAMINB1 and KI67 mRNAs, and enhanced secretion of IL-6 and IL-8, which are well-established hallmarks of senescence. Finally, HCMV-infected RPTECs have the ability to trigger a senescence/inflammatory loop in an IL-6-dependent manner, leading to the development of a similar senescence/inflammatory phenotype in neighboring uninfected cells. Overall, our findings raise the intriguing possibility that this unique inflammatory loop contributes to HCMV-related pathogenesis in the kidney.
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Affiliation(s)
- Stefano Raviola
- Intrinsic Immunity Unit, CAAD - Center for Translational Research on Autoimmune and Allergic Disease, University of Eastern Piedmont, Novara, Italy
- Molecular Virology Unit, Department of Translational Medicine, University of Eastern Piedmont, Novara, Italy
| | - Gloria Griffante
- Molecular Virology Unit, Department of Translational Medicine, University of Eastern Piedmont, Novara, Italy
| | - Andrea Iannucci
- Intrinsic Immunity Unit, CAAD - Center for Translational Research on Autoimmune and Allergic Disease, University of Eastern Piedmont, Novara, Italy
- Molecular Virology Unit, Department of Translational Medicine, University of Eastern Piedmont, Novara, Italy
- Department of Biomedicine and Prevention, University of Rome "Tor Vergata", Rome, Italy
| | - Shikha Chandel
- Molecular Virology Unit, Department of Translational Medicine, University of Eastern Piedmont, Novara, Italy
| | - Irene Lo Cigno
- Molecular Virology Unit, Department of Translational Medicine, University of Eastern Piedmont, Novara, Italy
| | - Davide Lacarbonara
- Intrinsic Immunity Unit, CAAD - Center for Translational Research on Autoimmune and Allergic Disease, University of Eastern Piedmont, Novara, Italy
- Molecular Virology Unit, Department of Translational Medicine, University of Eastern Piedmont, Novara, Italy
| | - Valeria Caneparo
- Intrinsic Immunity Unit, CAAD - Center for Translational Research on Autoimmune and Allergic Disease, University of Eastern Piedmont, Novara, Italy
| | - Selina Pasquero
- Viral Pathogenesis Unit, Department of Public Health and Pediatric Sciences, University of Turin, Medical School, Turin, Italy
| | - Francesco Favero
- Bioinformatics Unit, CAAD - Center for Translational Research on Autoimmune and Allergic Disease, University of Eastern Piedmont, Novara, Italy
- Bioinformatics Unit, Department of Translational Medicine, University of Eastern Piedmont, Novara, Italy
| | - Davide Corà
- Bioinformatics Unit, CAAD - Center for Translational Research on Autoimmune and Allergic Disease, University of Eastern Piedmont, Novara, Italy
- Bioinformatics Unit, Department of Translational Medicine, University of Eastern Piedmont, Novara, Italy
| | - Elena Trisolini
- Pathology Unit, Department of Health Sciences, University of Eastern Piedmont, Novara, Italy
| | - Renzo Boldorini
- Pathology Unit, Department of Health Sciences, University of Eastern Piedmont, Novara, Italy
| | - Vincenzo Cantaluppi
- Nephrology and Kidney Transplantation Unit, Department of Translational Medicine, University of Eastern Piedmont, Novara, Italy
| | - Santo Landolfo
- Viral Pathogenesis Unit, Department of Public Health and Pediatric Sciences, University of Turin, Medical School, Turin, Italy
| | - Marisa Gariglio
- Intrinsic Immunity Unit, CAAD - Center for Translational Research on Autoimmune and Allergic Disease, University of Eastern Piedmont, Novara, Italy
- Molecular Virology Unit, Department of Translational Medicine, University of Eastern Piedmont, Novara, Italy
| | - Marco De Andrea
- Intrinsic Immunity Unit, CAAD - Center for Translational Research on Autoimmune and Allergic Disease, University of Eastern Piedmont, Novara, Italy.
- Viral Pathogenesis Unit, Department of Public Health and Pediatric Sciences, University of Turin, Medical School, Turin, Italy.
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Marin LJ, Dos Santos PR, Ramos FC, Dos Santos UR, Marques M, de Carvalho LD, Gadelha SR, Aquino VH. Congenital CMV infection in a Brazilian neonatal intensive care unit: high prevalence among twin newborns. Virol J 2024; 21:63. [PMID: 38459575 PMCID: PMC10924335 DOI: 10.1186/s12985-024-02324-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 02/23/2024] [Indexed: 03/10/2024] Open
Abstract
BACKGROUND Cytomegalovirus (CMV) is one of the most important pathogens associated with congenital infection worldwide. Most congenital CMV-infected infants are asymptomatic at birth; however, some can develop delayed sequelae, especially hearing loss. METHODS This study aimed to investigate the prevalence of congenital CMV infection in a neonatal intensive care unit in a low-income region of Brazil. The objectives extended to identifying associated factors, assessing the clinical status of infected newborns, and undertaking a two-year follow-up to discern potential long-term consequences in the affected infants. This cross-sectional prospective study enrolled newborns up to three weeks of life requiring intensive medical care. We employed a convenience sampling method to include 498 newborns and 477 mothers in the study. Categorical variables underwent analysis employing Fisher's exact test, whereas the examination of continuous variables involved the Mann‒Whitney test. RESULTS CMV DNA was detected in saliva/urine samples from 6 newborns (1.21%), confirming congenital infection. We noted a significantly greater incidence (OR: 11.48; 95% CI: 2.519-52.33; p = 0.0094) of congenital infection among twins (7.14%) than among nontwins (0.66%). The twin patients exhibited discordant infection statuses, suggesting that only one of the babies tested positive for CMV. Most of the infected children were born to mothers who initiated sexual activity at a younger age (p = 0.0269). Only three out of the six newborns diagnosed with CMV infection underwent comprehensive clinical assessments and received continuous follow-up until they reached two years of age. Only one of the children had weight and height measurements below the norm for their age, coupled with developmental delays. CONCLUSIONS The prevalence of congenital CMV infection among newborns admitted to the NICU was low and similar to that in the general population. However, we found a significantly greater incidence of congenital CMV infection in twins than in singletons. Interestingly, the twin-infected patients exhibited discordant infection statuses, suggesting that CMV was present in only one of the babies. We also found that most of the infected children were born to mothers who initiated sexual activity at a younger age. Diagnostic accessibility and comprehensive surveillance programs are imperative for effectively managing and preventing congenital CMV infections.
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Affiliation(s)
- Lauro Juliano Marin
- Laboratório de Farmacogenômica e Epidemiologia Molec ular, Departamento de Ciências da Saúde, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brasil.
| | - Pérola Rodrigues Dos Santos
- Laboratório de Farmacogenômica e Epidemiologia Molec ular, Departamento de Ciências da Saúde, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brasil
| | - Felipe Charu Ramos
- Faculdade de Medicina, Departamento de Ciências da Saúde, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brasil
| | - Uener Ribeiro Dos Santos
- Laboratório de Imunobiologia, Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brasil
| | - Marcílio Marques
- Faculdade de Medicina, Departamento de Ciências da Saúde, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brasil
| | - Luciana Debortoli de Carvalho
- Laboratório de Microbiologia, Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brasil
| | - Sandra Rocha Gadelha
- Laboratório de Farmacogenômica e Epidemiologia Molec ular, Departamento de Ciências da Saúde, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brasil
| | - Victor Hugo Aquino
- Departamento de Inmunología, Instituto de Investigaciones en Ciencias de la Salud, Universidad Nacional de Asunción, San Lorenzo, Central, Paraguay.
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36
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Groves IJ, Matthews SM, O'Connor CM. Host-encoded CTCF regulates human cytomegalovirus latency via chromatin looping. Proc Natl Acad Sci U S A 2024; 121:e2315860121. [PMID: 38408244 DOI: 10.1073/pnas.2315860121] [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: 09/18/2023] [Accepted: 01/09/2024] [Indexed: 02/28/2024] Open
Abstract
Human cytomegalovirus (HCMV) is a prevalent pathogen that establishes life-long latent infection in hematopoietic cells. While this infection is usually asymptomatic, immune dysregulation leads to viral reactivation, which can cause significant morbidity and mortality. However, the mechanisms underpinning reactivation remain incompletely understood. The HCMV major immediate early promoter (MIEP)/enhancer is a key factor in this process, as its transactivation from a repressed to active state helps drive viral gene transcription necessary for reactivation from latency. Numerous host transcription factors bind the MIE locus and recruit repressive chromatin modifiers, thus impeding virus reactivation. One such factor is CCCTC-binding protein (CTCF), a highly conserved host zinc finger protein that mediates chromatin conformation and nuclear architecture. However, the mechanisms by which CTCF contributes to HCMV latency were previously unexplored. Here, we confirm that CTCF binds two convergent sites within the MIE locus during latency in primary CD14+ monocytes, and following cellular differentiation, CTCF association is lost as the virus reactivates. While mutation of the MIE enhancer CTCF binding site does not impact viral lytic growth in fibroblasts, this mutant virus fails to maintain latency in myeloid cells. Furthermore, we show the two convergent CTCF binding sites allow looping to occur across the MIEP, supporting transcriptional repression during latency. Indeed, looping between the two sites diminishes during virus reactivation, concurrent with activation of MIE transcription. Taken together, our data reveal that three-dimensional chromatin looping aids in the regulation of HCMV latency and provides insight into promoter/enhancer regulation that may prove broadly applicable across biological systems.
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Affiliation(s)
- Ian J Groves
- Infection Biology Program, Sheikha Fatima bint Mubarak Global Center for Pathogen and Human Health Research, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195
- Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland Clinic, Cleveland, OH 44195
- Case Comprehensive Cancer Center, Cleveland, OH 44106
| | - Stephen M Matthews
- Infection Biology Program, Sheikha Fatima bint Mubarak Global Center for Pathogen and Human Health Research, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195
- Case Comprehensive Cancer Center, Cleveland, OH 44106
| | - Christine M O'Connor
- Infection Biology Program, Sheikha Fatima bint Mubarak Global Center for Pathogen and Human Health Research, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195
- Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland Clinic, Cleveland, OH 44195
- Case Comprehensive Cancer Center, Cleveland, OH 44106
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Liu F, Wang Z, Niu D, Zhang X, Nan F, Jiang S, Li J, Yu M, Yang X, Zhang S, Zhou X, Wang H, Zhang X, Liu W, Li Z, Wang Y, Wang B. Single-Cell RNA Sequencing Transcriptomics Revealed HCMV IE2-Related Microglia Responses in Alzheimer's-Like Disease in Transgenic Mice. Mol Neurobiol 2024; 61:1331-1345. [PMID: 37700217 PMCID: PMC10896799 DOI: 10.1007/s12035-023-03553-y] [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: 03/19/2023] [Accepted: 08/01/2023] [Indexed: 09/14/2023]
Abstract
Although multiple factors are known to concur with Alzheimer's disease (AD), the relationship between human cytomegalovirus (HCMV) and AD-like disease is unclear. Here, we propose a hypothesis that HCMV immediate-early 2 (IE2) protein promotes microglia activation and thus leads to AD-like disease. We successfully constructed IE2 transgenic mice expressing IE2 in the hippocampus. Single-cell sequencing analysis revealed that IE2 promoted the activation of microglia and upregulated the expression of disease-associated microglia genes. Differentially expressed gene analysis and pathway enrichment revealed that IE2 upregulated immune and nervous system disease-related genes. Immunohistochemical analysis showed that the expressions of both amyloid precursor protein (APP) and p-Tau were significantly upregulated in the brains of IE2 mice and were markers of AD. Taken together, these findings provide useful insights into AD-like disease activated by HCMV IE2.
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Affiliation(s)
- Fengjun Liu
- Department of Special Medicine, School of Basic Medicine, Qingdao University, Qingdao, 266000, China
| | - Zhifei Wang
- Clinical Laboratory, Qingdao Women and Children's Hospital of Qingdao University, Shandong, Qingdao, 266000, China
| | - Delei Niu
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Xianjuan Zhang
- Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, 266000, China
| | - Fulong Nan
- Department of Special Medicine, School of Basic Medicine, Qingdao University, Qingdao, 266000, China
| | - Shasha Jiang
- Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, 266000, China
| | - Jun Li
- Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, 266000, China
| | - Meng Yu
- Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, 266000, China
| | - Xiaoli Yang
- Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, 266000, China
| | - Shuyun Zhang
- Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, 266000, China
| | - Xiaoqiong Zhou
- Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, 266000, China
| | - Hui Wang
- Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, 266000, China
| | - Xueming Zhang
- Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, 266000, China
| | - Wenxuan Liu
- Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, 266000, China
| | - Zonghui Li
- Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, 266000, China
| | - Yunyang Wang
- Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Shandong, Qingdao, 266000, China.
| | - Bin Wang
- Department of Special Medicine, School of Basic Medicine, Qingdao University, Qingdao, 266000, China.
- Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, 266000, China.
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Eberhage J, Bresch IP, Ramani R, Viohl N, Buchta T, Rehfeld CL, Hinse P, Reubold TF, Brinkmann MM, Eschenburg S. Crystal structure of the tegument protein UL82 (pp71) from human cytomegalovirus. Protein Sci 2024; 33:e4915. [PMID: 38358250 PMCID: PMC10868460 DOI: 10.1002/pro.4915] [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: 10/24/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 02/16/2024]
Abstract
Human cytomegalovirus (HCMV) is an opportunistic pathogen that infects a majority of the world population. It may cause severe disease in immunocompromised people and lead to pregnancy loss or grave disabilities of the fetus upon congenital infection. For effective replication and lifelong persistence in its host, HCMV relies on diverse functions of its tegument protein UL82, also known as pp71. Up to now, little is known about the molecular mechanisms underlying the multiple functions of this crucial viral protein. Here, we describe the X-ray structure of full-length UL82 to a resolution of 2.7 Å. A single polypeptide chain of 559 amino acids mainly folds into three ß-barrels. We show that UL82 forms a dimer in the crystal as well as in solution. We identify point mutations that disturb the dimerization interface and show that the mutant protein is monomeric in solution and upon expression in human cells. On the basis of the three-dimensional structure, we identify structural homologs of UL82 from other herpesviruses and analyze whether their functions are preserved in UL82. We demonstrate that UL82, despite its structural homology to viral deoxyuridinetriphosphatases (dUTPases), does not possess dUTPase activity. Prompted by the structural homology of UL82 to the ORF10 protein of murine herpesvirus 68 (MHV68), which is known to interact with the RNA export factor ribonucleic acid export 1 (Rae1), we performed coimmunoprecipitations and demonstrated that UL82 indeed interacts with Rae1. This suggests that HCMV UL82 may play a role in mRNA export from the nucleus similar to ORF10 encoded by the gammaherpesviruses MHV68.
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Affiliation(s)
- Jan Eberhage
- Institute for Biophysical ChemistryHannover Medical SchoolHannoverGermany
- Cluster of Excellence RESIST (EXC 2155)Hannover Medical SchoolHannoverGermany
| | - Ian P. Bresch
- Institute for Biophysical ChemistryHannover Medical SchoolHannoverGermany
- Cluster of Excellence RESIST (EXC 2155)Hannover Medical SchoolHannoverGermany
| | - Ramya Ramani
- Institute of GeneticsTechnische Universität BraunschweigGermany
- Virology and Innate Immunity Research GroupHelmholtz Centre for Infection Research (HZI)BraunschweigGermany
| | - Niklas Viohl
- Institute for Biophysical ChemistryHannover Medical SchoolHannoverGermany
- Cluster of Excellence RESIST (EXC 2155)Hannover Medical SchoolHannoverGermany
| | - Thalea Buchta
- Institute of GeneticsTechnische Universität BraunschweigGermany
| | - Christopher L. Rehfeld
- Institute for Biophysical ChemistryHannover Medical SchoolHannoverGermany
- Cluster of Excellence RESIST (EXC 2155)Hannover Medical SchoolHannoverGermany
| | - Petra Hinse
- Institute for Biophysical ChemistryHannover Medical SchoolHannoverGermany
| | - Thomas F. Reubold
- Institute for Biophysical ChemistryHannover Medical SchoolHannoverGermany
| | - Melanie M. Brinkmann
- Institute of GeneticsTechnische Universität BraunschweigGermany
- Virology and Innate Immunity Research GroupHelmholtz Centre for Infection Research (HZI)BraunschweigGermany
| | - Susanne Eschenburg
- Institute for Biophysical ChemistryHannover Medical SchoolHannoverGermany
- Cluster of Excellence RESIST (EXC 2155)Hannover Medical SchoolHannoverGermany
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Schmitt J, Poole E, Groves I, Owen DJ, Graham SC, Sinclair J, Kelly BT. Repurposing an endogenous degradation domain for antibody-mediated disposal of cell-surface proteins. EMBO Rep 2024; 25:951-970. [PMID: 38287192 PMCID: PMC10933360 DOI: 10.1038/s44319-024-00063-3] [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: 07/27/2023] [Revised: 12/14/2023] [Accepted: 12/21/2023] [Indexed: 01/31/2024] Open
Abstract
The exquisite specificity of antibodies can be harnessed to effect targeted degradation of membrane proteins. Here, we demonstrate targeted protein removal utilising a protein degradation domain derived from the endogenous human protein Proprotein Convertase Subtilisin/Kexin type 9 (PCSK9). Recombinant antibodies genetically fused to this domain drive the degradation of membrane proteins that undergo constitutive internalisation and recycling, including the transferrin receptor and the human cytomegalovirus latency-associated protein US28. We term this approach PACTAC (PCSK9-Antibody Clearance-Targeting Chimeras).
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Affiliation(s)
- Janika Schmitt
- Department of Medicine, Cambridge Institute of Therapeutic Immunology and Infectious Disease, University of Cambridge, Hills Road, CB2 0SP, Cambridge, UK
- Faculty of Medicine, Charité Berlin, 10117, Berlin, Germany
- Faculty of Medicine, University of Heidelberg, 69210, Heidelberg, Germany
| | - Emma Poole
- Department of Medicine, Cambridge Institute of Therapeutic Immunology and Infectious Disease, University of Cambridge, Hills Road, CB2 0SP, Cambridge, UK
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QP, UK
| | - Ian Groves
- Department of Medicine, Cambridge Institute of Therapeutic Immunology and Infectious Disease, University of Cambridge, Hills Road, CB2 0SP, Cambridge, UK
- Infection Biology, Global Center for Pathogen and Human Health Research, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, 44195, USA
| | - David J Owen
- Cambridge Institute for Medical Research, Keith Peters Building, Hills Road, Cambridge, CB2 0XY, UK.
| | - Stephen C Graham
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QP, UK.
| | - John Sinclair
- Department of Medicine, Cambridge Institute of Therapeutic Immunology and Infectious Disease, University of Cambridge, Hills Road, CB2 0SP, Cambridge, UK.
| | - Bernard T Kelly
- Cambridge Institute for Medical Research, Keith Peters Building, Hills Road, Cambridge, CB2 0XY, UK.
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40
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Dremel SE, Tagawa T, Koparde VN, Hernandez-Perez C, Arbuckle JH, Kristie TM, Krug LT, Ziegelbauer JM. Interferon induced circRNAs escape herpesvirus host shutoff and suppress lytic infection. EMBO Rep 2024; 25:1541-1569. [PMID: 38263330 PMCID: PMC10933408 DOI: 10.1038/s44319-023-00051-z] [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: 11/09/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/25/2024] Open
Abstract
To globally profile circRNAs, we employ RNA-Sequencing paired with chimeric junction analysis for alpha-, beta-, and gamma-herpesvirus infection. We find circRNAs are, as a population, resistant to host shutoff. We validate this observation using ectopic expression assays of human and murine herpesvirus endoribonucleases. During lytic infection, four circRNAs are commonly induced across all subfamilies of human herpesviruses, suggesting a shared mechanism of regulation. We test one such mechanism, namely how interferon-stimulation influences circRNA expression. 67 circRNAs are upregulated by either interferon-β or -γ treatment, with half of these also upregulated during lytic infection. Using gain and loss of function studies we find an interferon-stimulated circRNA, circRELL1, inhibits lytic Herpes Simplex Virus-1 infection. We previously reported circRELL1 inhibits lytic Kaposi sarcoma-associated herpesvirus infection, suggesting a pan-herpesvirus antiviral activity. We propose a two-pronged model in which interferon-stimulated genes may encode both mRNA and circRNA with antiviral activity. This is critical in cases of host shutoff, such as alpha- and gamma-herpesvirus infection, where the mRNA products are degraded but circRNAs escape.
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Affiliation(s)
- Sarah E Dremel
- HIV and AIDS Malignancy Branch, National Cancer Institute, Bethesda, 20892, USA
| | - Takanobu Tagawa
- HIV and AIDS Malignancy Branch, National Cancer Institute, Bethesda, 20892, USA
| | - Vishal N Koparde
- CCR Collaborative Bioinformatics Resource, National Cancer Institute, Bethesda, 20892, USA
- Frederick National Laboratory for Cancer Research Advanced Biomedical Computational Sciences, Leidos Biomedical Research, Inc., Frederick, 21701, USA
| | | | - Jesse H Arbuckle
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, Bethesda, 20892, USA
| | - Thomas M Kristie
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, Bethesda, 20892, USA
| | - Laurie T Krug
- HIV and AIDS Malignancy Branch, National Cancer Institute, Bethesda, 20892, USA
| | - Joseph M Ziegelbauer
- HIV and AIDS Malignancy Branch, National Cancer Institute, Bethesda, 20892, USA.
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41
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Stempel M, Maier O, Mhlekude B, Drakesmith H, Brinkmann MM. Novel role of bone morphogenetic protein 9 in innate host responses to HCMV infection. EMBO Rep 2024; 25:1106-1129. [PMID: 38308064 PMCID: PMC10933439 DOI: 10.1038/s44319-024-00072-2] [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: 03/24/2023] [Revised: 01/03/2024] [Accepted: 01/17/2024] [Indexed: 02/04/2024] Open
Abstract
Herpesviruses modulate immune control to secure lifelong infection. The mechanisms Human Cytomegalovirus (HCMV) employs in this regard can reveal unanticipated aspects of cellular signaling involved in antiviral immunity. Here, we describe a novel relationship between the TGF-β family cytokine BMP9 and HCMV infection. We identify a cross-talk between BMP9-induced and IFN receptor-mediated signaling, showing that BMP9 boosts the transcriptional response to and antiviral activity of IFNβ, thereby enhancing viral restriction. We also show that BMP9 is secreted by human fibroblasts upon HCMV infection. However, HCMV infection impairs BMP9-induced enhancement of the IFNβ response, indicating that this signaling role of BMP9 is actively targeted by HCMV. Indeed, transmembrane proteins US18 and US20, which downregulate type I BMP receptors, are necessary and sufficient to cause inhibition of BMP9-mediated boosting of the antiviral response to IFNβ. HCMV lacking US18 and US20 is more sensitive to IFNβ. Thus, HCMV has a mutually antagonistic relationship with BMP9, which extends the growing body of evidence that BMP signaling is an underappreciated modulator of innate immunity in response to viral infection.
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Affiliation(s)
- Markus Stempel
- Institute of Genetics, Technische Universität Braunschweig, Braunschweig, Germany
- Virology and Innate Immunity Research Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Oliver Maier
- Institute of Genetics, Technische Universität Braunschweig, Braunschweig, Germany
| | - Baxolele Mhlekude
- Virology and Innate Immunity Research Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Hal Drakesmith
- MRC Translational Immune Discovery Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Melanie M Brinkmann
- Institute of Genetics, Technische Universität Braunschweig, Braunschweig, Germany.
- Virology and Innate Immunity Research Group, Helmholtz Centre for Infection Research, Braunschweig, Germany.
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42
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Tillmanns J, Kicuntod J, Lösing J, Marschall M. 'Getting Better'-Is It a Feasible Strategy of Broad Pan-Antiherpesviral Drug Targeting by Using the Nuclear Egress-Directed Mechanism? Int J Mol Sci 2024; 25:2823. [PMID: 38474070 DOI: 10.3390/ijms25052823] [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: 01/28/2024] [Revised: 02/24/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
The herpesviral nuclear egress represents an essential step of viral replication efficiency in host cells, as it defines the nucleocytoplasmic release of viral capsids. Due to the size limitation of the nuclear pores, viral nuclear capsids are unable to traverse the nuclear envelope without a destabilization of this natural host-specific barrier. To this end, herpesviruses evolved the regulatory nuclear egress complex (NEC), composed of a heterodimer unit of two conserved viral NEC proteins (core NEC) and a large-size extension of this complex including various viral and cellular NEC-associated proteins (multicomponent NEC). Notably, the NEC harbors the pronounced ability to oligomerize (core NEC hexamers and lattices), to multimerize into higher-order complexes, and, ultimately, to closely interact with the migrating nuclear capsids. Moreover, most, if not all, of these NEC proteins comprise regulatory modifications by phosphorylation, so that the responsible kinases, and additional enzymatic activities, are part of the multicomponent NEC. This sophisticated basis of NEC-specific structural and functional interactions offers a variety of different modes of antiviral interference by pharmacological or nonconventional inhibitors. Since the multifaceted combination of NEC activities represents a highly conserved key regulatory stage of herpesviral replication, it may provide a unique opportunity towards a broad, pan-antiherpesviral mechanism of drug targeting. This review presents an update on chances, challenges, and current achievements in the development of NEC-directed antiherpesviral strategies.
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Affiliation(s)
- Julia Tillmanns
- Institute for Clinical and Molecular Virology, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
| | - Jintawee Kicuntod
- Institute for Clinical and Molecular Virology, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
| | - Josephine Lösing
- Institute for Clinical and Molecular Virology, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
| | - Manfred Marschall
- Institute for Clinical and Molecular Virology, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
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43
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Yoo WS, Kwon LH, Eom Y, Thng ZX, Or C, Nguyen QD, Kim SJ. Cytomegalovirus Corneal Endotheliitis: A Comprehensive Review. Ocul Immunol Inflamm 2024:1-10. [PMID: 38417101 DOI: 10.1080/09273948.2024.2320704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 02/14/2024] [Indexed: 03/01/2024]
Abstract
Cytomegalovirus (CMV) anterior uveitis and corneal endotheliitis are the most common ocular diseases caused by CMV infections in immunocompetent patients. The incidence of CMV corneal endotheliitis is relatively high in middle-aged men. CMV corneal endotheliitis presents with mild anterior chamber inflammation, corneal edema, keratic precipitates, and elevated intraocular pressure. It resembles Posner-Schlossman syndrome and Fuchs uveitis because of the elevated intraocular pressure. Without proper diagnosis and treatment, it may progress to bullous keratopathy or glaucoma, necessitating keratoplasty or glaucoma surgery. Therefore, early diagnosis and treatment are important for a good prognosis. Aqueous humor analysis can facilitate the diagnosis of CMV corneal endotheliitis, and early antiviral treatment can decrease the risk of corneal compensation or glaucomatous optic atrophy. In this article, we review the epidemiology, pathogenesis, clinical manifestations, diagnosis, treatment, and prognosis of CMV corneal endotheliitis along with the evidence for early clinical diagnosis and active antiviral treatment.
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Affiliation(s)
- Woong-Sun Yoo
- Department of Ophthalmology, Gyeongsang National University College of Medicine, and Gyeongsang National University Hospital, Jinju, Republic of Korea
- Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju, Republic of Korea
- Spencer Center for Vision Research, Byers Eye Institute, Stanford University School of Medicine, Palo Alto, California, USA
| | - Lee-Ha Kwon
- Department of Ophthalmology, Gyeongsang National University College of Medicine, and Gyeongsang National University Hospital, Jinju, Republic of Korea
- Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju, Republic of Korea
| | - Youngsub Eom
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Republic of Korea
- Department of Ophthalmology, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Zheng Xian Thng
- Spencer Center for Vision Research, Byers Eye Institute, Stanford University School of Medicine, Palo Alto, California, USA
- National Healthcare Group Eye Institute, Tan Tock Seng Hospital, Singapore, Singapore
| | - Christopher Or
- Spencer Center for Vision Research, Byers Eye Institute, Stanford University School of Medicine, Palo Alto, California, USA
| | - Quan Dong Nguyen
- Spencer Center for Vision Research, Byers Eye Institute, Stanford University School of Medicine, Palo Alto, California, USA
| | - Seong-Jae Kim
- Department of Ophthalmology, Gyeongsang National University College of Medicine, and Gyeongsang National University Hospital, Jinju, Republic of Korea
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44
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Jih J, Liu YT, Liu W, Zhou ZH. The incredible bulk: Human cytomegalovirus tegument architectures uncovered by AI-empowered cryo-EM. SCIENCE ADVANCES 2024; 10:eadj1640. [PMID: 38394211 PMCID: PMC10889378 DOI: 10.1126/sciadv.adj1640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 01/22/2024] [Indexed: 02/25/2024]
Abstract
The compartmentalization of eukaryotic cells presents considerable challenges to the herpesvirus life cycle. The herpesvirus tegument, a bulky proteinaceous aggregate sandwiched between herpesviruses' capsid and envelope, is uniquely evolved to address these challenges, yet tegument structure and organization remain poorly characterized. We use deep-learning-enhanced cryogenic electron microscopy to investigate the tegument of human cytomegalovirus virions and noninfectious enveloped particles (NIEPs; a genome packaging-aborted state), revealing a portal-biased tegumentation scheme. We resolve atomic structures of portal vertex-associated tegument (PVAT) and identify multiple configurations of PVAT arising from layered reorganization of pUL77, pUL48 (large tegument protein), and pUL47 (inner tegument protein) assemblies. Analyses show that pUL77 seals the last-packaged viral genome end through electrostatic interactions, pUL77 and pUL48 harbor a head-linker-capsid-binding motif conducive to PVAT reconfiguration, and pUL47/48 dimers form 45-nm-long filaments extending from the portal vertex. These results provide a structural framework for understanding how herpesvirus tegument facilitates and evolves during processes spanning viral genome packaging to delivery.
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Affiliation(s)
- Jonathan Jih
- Molecular Biology Institute, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
- California NanoSystems Institute, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | - Yun-Tao Liu
- California NanoSystems Institute, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | - Wei Liu
- California NanoSystems Institute, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | - Z. Hong Zhou
- Molecular Biology Institute, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
- California NanoSystems Institute, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
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Wang HY, Li L, Nelson CS, Barfield R, Valencia S, Chan C, Muramatsu H, Lin PJC, Pardi N, An Z, Weissman D, Permar SR. Multivalent cytomegalovirus glycoprotein B nucleoside modified mRNA vaccines did not demonstrate a greater antibody breadth. NPJ Vaccines 2024; 9:38. [PMID: 38378950 PMCID: PMC10879498 DOI: 10.1038/s41541-024-00821-3] [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: 11/23/2022] [Accepted: 01/30/2024] [Indexed: 02/22/2024] Open
Abstract
Human cytomegalovirus (HCMV) remains the most common congenital infection and infectious complication in immunocompromised patients. The most successful HCMV vaccine to date, an HCMV glycoprotein B (gB) subunit vaccine adjuvanted with MF59, achieved 50% efficacy against primary HCMV infection. A previous study demonstrated that gB/MF59 vaccinees were less frequently infected with HCMV gB genotype strains most similar to the vaccine strain than strains encoding genetically distinct gB genotypes, suggesting strain-specific immunity accounted for the limited efficacy. To determine whether vaccination with multiple HCMV gB genotypes could increase the breadth of anti-HCMV gB humoral and cellular responses, we immunized 18 female rabbits with monovalent (gB-1), bivalent (gB-1+gB-3), or pentavalent (gB-1+gB-2+gB-3+gB-4+gB-5) gB lipid nanoparticle-encapsulated nucleoside-modified RNA (mRNA-LNP) vaccines. The multivalent vaccine groups did not demonstrate a higher magnitude or breadth of the IgG response to the gB ectodomain or cell-associated gB compared to that of the monovalent vaccine. Also, the multivalent vaccines did not show an increase in the breadth of neutralization activity and antibody-dependent cellular phagocytosis against HCMV strains encoding distinct gB genotypes. Interestingly, peripheral blood mononuclear cell-derived gB-2-specific T-cell responses elicited by multivalent vaccines were of a higher magnitude compared to that of monovalent vaccinated animals against a vaccine-mismatched gB genotype at peak immunogenicity. Yet, no statistical differences were observed in T cell response against gB-3 and gB-5 variable regions among the three vaccine groups. Our data suggests that the inclusion of multivalent gB antigens is not an effective strategy to increase the breadth of anti-HCMV gB antibody and T cell responses. Understanding how to increase the HCMV vaccine protection breadth will be essential to improve the vaccine efficacy.
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Affiliation(s)
- Hsuan-Yuan Wang
- Department of Pediatrics, Weill Cornell Medicine, New York, NY, 10065, USA
- Duke University Medical Center, Duke Human Vaccine Institute, Durham, NC, 27710, USA
| | - Leike Li
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
- Takeda Pharmaceutical, San Diego, CA, 92121, USA
| | - Cody S Nelson
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Richard Barfield
- Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, NC, 27710, USA
- Center for Human Systems Immunology, Duke University Medical Center, Durham, NC, 27710, USA
| | - Sarah Valencia
- Duke University Medical Center, Duke Human Vaccine Institute, Durham, NC, 27710, USA
| | - Cliburn Chan
- Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, NC, 27710, USA
- Center for Human Systems Immunology, Duke University Medical Center, Durham, NC, 27710, USA
| | - Hiromi Muramatsu
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Paulo J C Lin
- Acuitas Therapeutics, Vancouver, BC, V6T 1Z3, Canada
| | - Norbert Pardi
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Zhiqiang An
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
| | - Drew Weissman
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Sallie R Permar
- Department of Pediatrics, Weill Cornell Medicine, New York, NY, 10065, USA.
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Holtappels R, Büttner JK, Freitag K, Reddehase MJ, Lemmermann NA. Modulation of cytomegalovirus immune evasion identifies direct antigen presentation as the predominant mode of CD8 T-cell priming during immune reconstitution after hematopoietic cell transplantation. Front Immunol 2024; 15:1355153. [PMID: 38426094 PMCID: PMC10902149 DOI: 10.3389/fimmu.2024.1355153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 02/01/2024] [Indexed: 03/02/2024] Open
Abstract
Cytomegalovirus (CMV) infection is the most critical infectious complication in recipients of hematopoietic cell transplantation (HCT) in the period between a therapeutic hematoablative treatment and the hematopoietic reconstitution of the immune system. Clinical investigation as well as the mouse model of experimental HCT have consistently shown that timely reconstitution of antiviral CD8 T cells is critical for preventing CMV disease in HCT recipients. Reconstitution of cells of the T-cell lineage generates naïve CD8 T cells with random specificities among which CMV-specific cells need to be primed by presentation of viral antigen for antigen-specific clonal expansion and generation of protective antiviral effector CD8 T cells. For CD8 T-cell priming two pathways are discussed: "direct antigen presentation" by infected professional antigen-presenting cells (pAPCs) and "antigen cross-presentation" by uninfected pAPCs that take up antigenic material derived from infected tissue cells. Current view in CMV immunology favors the cross-priming hypothesis with the argument that viral immune evasion proteins, known to interfere with the MHC class-I pathway of direct antigen presentation by infected cells, would inhibit the CD8 T-cell response. While the mode of antigen presentation in the mouse model of CMV infection has been studied in the immunocompetent host under genetic or experimental conditions excluding either pathway of antigen presentation, we are not aware of any study addressing the medically relevant question of how newly generated naïve CD8 T cells become primed in the phase of lympho-hematopoietic reconstitution after HCT. Here we used the well-established mouse model of experimental HCT and infection with murine CMV (mCMV) and pursued the recently described approach of up- or down-modulating direct antigen presentation by using recombinant viruses lacking or overexpressing the central immune evasion protein m152 of mCMV, respectively. Our data reveal that the magnitude of the CD8 T-cell response directly reflects the level of direct antigen presentation.
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Affiliation(s)
- Rafaela Holtappels
- Institute for Virology and Research Center for Immunotherapy (FZI) at the University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Julia K. Büttner
- Institute for Virology and Research Center for Immunotherapy (FZI) at the University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Kirsten Freitag
- Institute for Virology and Research Center for Immunotherapy (FZI) at the University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Matthias J. Reddehase
- Institute for Virology and Research Center for Immunotherapy (FZI) at the University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Niels A. Lemmermann
- Institute for Virology and Research Center for Immunotherapy (FZI) at the University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
- Institute of Virology, Medical Faculty, University of Bonn, Bonn, Germany
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47
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Zhang H, Liang R, Zhu Y, Hu L, Xia H, Li J, Ye Y. Metagenomic next-generation sequencing of plasma cell-free DNA improves the early diagnosis of suspected infections. BMC Infect Dis 2024; 24:187. [PMID: 38347444 PMCID: PMC10863141 DOI: 10.1186/s12879-024-09043-3] [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: 07/20/2023] [Accepted: 01/22/2024] [Indexed: 02/15/2024] Open
Abstract
BACKGROUND Metagenomic next-generation sequencing (mNGS) could improve the diagnosed efficiency of pathogens in bloodstream infections or sepsis. Little is known about the clinical impact of mNGS test when used for the early diagnosis of suspected infections. Herein, our main objective was to assess the clinical efficacy of utilizing blood samples to perform mNGS for early diagnosis of suspected infections, as well as to evaluate its potential in guiding antimicrobial therapy decisions. METHODS In this study, 212 adult hospitalized patients who underwent blood mNGS test in the early stage of suspected infections were enrolled. Diagnostic efficacy of mNGS test and blood culture was compared, and the clinical impact of mNGS on clinical care was analyzed. RESULTS In our study, the total detection rate of blood mNGS was significantly higher than that of culture method (74.4% vs. 12.1%, P < 0.001) in the paired mNGS test and blood culture. Blood stream infection (107, 67.3%) comprised the largest component of all the diseases in our patients, and the detection rate of single blood sample subgroup was similar with that of multiple type of samples subgroup. Among the 187 patients complained with fever, there was no difference in the diagnostic efficacy of mNGS when blood specimens or additional other specimens were used in cases presenting only with fever. While, when patients had other symptoms except fever, the performance of mNGS was superior in cases with specimens of suspected infected sites and blood collected at the same time. Guided by mNGS results, therapeutic regimens for 70.3% cases (149/212) were changed, and the average hospitalized days were significantly shortened in cases with the earlier sampling time of admission. CONCLUSION In this study, we emphasized the importance of blood mNGS in early infectious patients with mild and non-specific symptoms. Blood mNGS can be used as a supplement to conventional laboratory examination, and should be performed as soon as possible to guide clinicians to perform appropriate anti-infection treatment timely and effectively. Additionally, combining the contemporaneous samples from suspected infection sites could improve disease diagnosis and prognoses. Further research needs to be better validated in large-scale clinical trials to optimize diagnostic protocol, and the cost-utility analysis should be performed.
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Affiliation(s)
- Hui Zhang
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Ruobing Liang
- Department of Scientific Affaires, Hugobiotech Co., Ltd, Beijing, China
| | - Yunzhu Zhu
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Lifen Hu
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Han Xia
- Department of Scientific Affaires, Hugobiotech Co., Ltd, Beijing, China.
| | - Jiabin Li
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, China.
- Institute of Bacterial Resistance, Anhui Medical University, Hefei, China.
- Anhui Center for Surveillance of Bacterial Resistance, Hefei, China.
| | - Ying Ye
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, China.
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48
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Mokry RL, Purdy JG. Metabolites that feed upper glycolytic branches support glucose independent human cytomegalovirus replication. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.12.579992. [PMID: 38405935 PMCID: PMC10888764 DOI: 10.1101/2024.02.12.579992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
The broad tissue distribution and cell tropism of human cytomegalovirus indicates that the virus successfully replicates in tissues with various nutrient environments. HCMV requires and reprograms central carbon metabolism for viral replication. However, many studies focus on reprogramming of metabolism in high nutrient conditions that do not recapitulate physiological nutrient environments in the body. In this study, we investigate how HCMV successfully replicates when nutrients are suboptimal. We limited glucose following HCMV infection to determine how glucose supports virus replication and how nutrients potentially present in the physiological environment contribute to successful glucose independent HCMV replication. Glucose is required for HCMV viral genome synthesis, viral protein production and glycosylation, and virus production. However, supplement of glucose-free cultures with uridine, ribose, or UDP-GlcNAc-metabolites that support upper glycolytic branches-resulted in partially restored viral genome synthesis and subsequent partial restoration of viral protein levels. Low levels of virus production were also restored. Supplementing lower glycolysis in glucose-free cultures using pyruvate had no effect on virus replication. These results indicate nutrients that support upper glycolytic branches like the pentose phosphate pathway and hexosamine pathway can compensate for glucose during HCMV replication to support low levels of virus production. More broadly, our findings suggest that HCMV could successfully replicate in diverse metabolic niches, including those in the body with low levels of glucose, through alternative nutrient usage.
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Affiliation(s)
- Rebekah L. Mokry
- BIO5 Institute, University of Arizona, Tucson, Arizona, USA
- Department of Immunobiology, University of Arizona, Tucson, Arizona, USA
| | - John G. Purdy
- BIO5 Institute, University of Arizona, Tucson, Arizona, USA
- Department of Immunobiology, University of Arizona, Tucson, Arizona, USA
- Cancer Biology Interdisciplinary Program, University of Arizona, Tucson, Arizona, USA
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49
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Espinar-Buitrago MDLS, Magro-López E, Vázquez-Alejo E, Muñoz-Fernández MÁ. Enhanced Immunomodulatory Effects of Thymosin-Alpha-1 in Combination with Polyanionic Carbosilane Dendrimers against HCMV Infection. Int J Mol Sci 2024; 25:1952. [PMID: 38396631 PMCID: PMC10887890 DOI: 10.3390/ijms25041952] [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: 12/21/2023] [Revised: 02/01/2024] [Accepted: 02/03/2024] [Indexed: 02/25/2024] Open
Abstract
Resistance and toxicity associated with current treatments for human cytomegalovirus (HCMV) infection highlight the need for alternatives and immunotherapy has emerged as a promising strategy. This study examined the in vitro immunological effects of co-administration of Thymosin-alpha-1 (Tα1) and polyanionic carbosilane dendrimers (PCDs) on peripheral blood mononuclear cells (PBMCs) during HCMV infection. The biocompatibility of PCDs was assessed via MTT and LDH assays. PBMCs were pre-treated with the co-administered compounds and then exposed to HCMV for 48 h. Morphological alterations in PBMCs were observed using optical microscopy and total dendritic cells (tDCs), myeloid dendritic cells (mDCs), and plasmacytoid dendritic cells (pDCs), along with CD4+/CD8+ T cells and regulatory T cells (Treg), and were characterized using multiparametric flow cytometry. The findings revealed that Tα1 + PCDs treatments increased DC activation and maturation. Furthermore, increased co-receptor expression, intracellular IFNγ production in T cells and elevated Treg functionality and reduced senescence were evident with Tα1 + G2-S24P treatment. Conversely, reduced co-receptor expression, intracellular cytokine production in T cells, lower functionality and higher senescence in Treg were observed with Tα1 + G2S16 treatment. In summary, Tα1 + PCDs treatments demonstrate synergistic effects during early HCMV infection, suggesting their use as an alternative therapeutic for preventing virus infection.
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Affiliation(s)
- María de la Sierra Espinar-Buitrago
- Section of Immunology, Immuno-Molecular Biology Laboratory (LIBM), University General Hospital Gregorio Marañon (HGUGM), 28007 Madrid, Spain; (M.d.l.S.E.-B.); (E.M.-L.); (E.V.-A.)
- Gregorio Marañon Health Research Institute (IiSGM), 28009 Madrid, Spain
- Center for Biomedical Research in Bioengineering, Biomaterials and Nanotechnology Network (CIBER-BBN), 28029 Madrid, Spain
| | - Esmeralda Magro-López
- Section of Immunology, Immuno-Molecular Biology Laboratory (LIBM), University General Hospital Gregorio Marañon (HGUGM), 28007 Madrid, Spain; (M.d.l.S.E.-B.); (E.M.-L.); (E.V.-A.)
- Gregorio Marañon Health Research Institute (IiSGM), 28009 Madrid, Spain
- Center for Biomedical Research in Bioengineering, Biomaterials and Nanotechnology Network (CIBER-BBN), 28029 Madrid, Spain
| | - Elena Vázquez-Alejo
- Section of Immunology, Immuno-Molecular Biology Laboratory (LIBM), University General Hospital Gregorio Marañon (HGUGM), 28007 Madrid, Spain; (M.d.l.S.E.-B.); (E.M.-L.); (E.V.-A.)
- Gregorio Marañon Health Research Institute (IiSGM), 28009 Madrid, Spain
- Center for Biomedical Research in Bioengineering, Biomaterials and Nanotechnology Network (CIBER-BBN), 28029 Madrid, Spain
| | - María Ángeles Muñoz-Fernández
- Section of Immunology, Immuno-Molecular Biology Laboratory (LIBM), University General Hospital Gregorio Marañon (HGUGM), 28007 Madrid, Spain; (M.d.l.S.E.-B.); (E.M.-L.); (E.V.-A.)
- Gregorio Marañon Health Research Institute (IiSGM), 28009 Madrid, Spain
- Center for Biomedical Research in Bioengineering, Biomaterials and Nanotechnology Network (CIBER-BBN), 28029 Madrid, Spain
- HIV-HGM Biobank, University General Hospital Gregorio Marañon (HGUGM), 28007 Madrid, Spain
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50
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García-Rodríguez I, Moreni G, Capendale PE, Mulder L, Aknouch I, Vieira de Sá R, Johannesson N, Freeze E, van Eijk H, Koen G, Wolthers KC, Pajkrt D, Sridhar A, Calitz C. Assessment of the broad-spectrum host targeting antiviral efficacy of halofuginone hydrobromide in human airway, intestinal and brain organotypic models. Antiviral Res 2024; 222:105798. [PMID: 38190972 DOI: 10.1016/j.antiviral.2024.105798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 01/02/2024] [Accepted: 01/04/2024] [Indexed: 01/10/2024]
Abstract
Halofuginone hydrobromide has shown potent antiviral efficacy against a variety of viruses such as SARS-CoV-2, dengue, or chikungunya virus, and has, therefore, been hypothesized to have broad-spectrum antiviral activity. In this paper, we tested this broad-spectrum antiviral activity of Halofuginone hydrobomide against viruses from different families (Picornaviridae, Herpesviridae, Orthomyxoviridae, Coronaviridae, and Flaviviridae). To this end, we used relevant human models of the airway and intestinal epithelium and regionalized neural organoids. Halofuginone hydrobomide showed antiviral activity against SARS-CoV-2 in the airway epithelium with no toxicity at equivalent concentrations used in human clinical trials but not against any of the other tested viruses.
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Affiliation(s)
- Inés García-Rodríguez
- Emma Children's Hospital, Department of Pediatric Infectious Diseases, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, Amsterdam Institute for Reproduction and Development, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands; OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands
| | - Giulia Moreni
- Emma Children's Hospital, Department of Pediatric Infectious Diseases, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, Amsterdam Institute for Reproduction and Development, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands; OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands
| | - Pamela E Capendale
- Emma Children's Hospital, Department of Pediatric Infectious Diseases, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, Amsterdam Institute for Reproduction and Development, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands; OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands
| | - Lance Mulder
- Emma Children's Hospital, Department of Pediatric Infectious Diseases, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, Amsterdam Institute for Reproduction and Development, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands; OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands
| | - Ikrame Aknouch
- Emma Children's Hospital, Department of Pediatric Infectious Diseases, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, Amsterdam Institute for Reproduction and Development, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands; OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands; Viroclinics Xplore, Schaijk, the Netherlands
| | - Renata Vieira de Sá
- Emma Children's Hospital, Department of Pediatric Infectious Diseases, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, Amsterdam Institute for Reproduction and Development, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands; OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands; UniQure Biopharma B.V., Department of Research & Development, Paasheuvelweg 25A, 1105, BE, Amsterdam, the Netherlands
| | - Nina Johannesson
- Emma Children's Hospital, Department of Pediatric Infectious Diseases, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, Amsterdam Institute for Reproduction and Development, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands; OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands
| | - Eline Freeze
- Emma Children's Hospital, Department of Pediatric Infectious Diseases, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, Amsterdam Institute for Reproduction and Development, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands; OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands
| | - Hetty van Eijk
- Emma Children's Hospital, Department of Pediatric Infectious Diseases, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, Amsterdam Institute for Reproduction and Development, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands; OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands
| | - Gerrit Koen
- Emma Children's Hospital, Department of Pediatric Infectious Diseases, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, Amsterdam Institute for Reproduction and Development, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands; OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands
| | - Katja C Wolthers
- OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands
| | - Dasja Pajkrt
- Emma Children's Hospital, Department of Pediatric Infectious Diseases, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, Amsterdam Institute for Reproduction and Development, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands
| | - Adithya Sridhar
- Emma Children's Hospital, Department of Pediatric Infectious Diseases, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, Amsterdam Institute for Reproduction and Development, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands; OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands
| | - Carlemi Calitz
- Emma Children's Hospital, Department of Pediatric Infectious Diseases, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, Amsterdam Institute for Reproduction and Development, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands; OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location Academic Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1100, AZ, Amsterdam, the Netherlands.
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