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Pfeiffer T, Lockowitz CR, Shenoy S, Mavers M, Hayashi R, Bednarski J, Green A. Letermovir as cytomegalovirus prophylaxis in children undergoing allogeneic hematopoietic cell transplantation. Bone Marrow Transplant 2024:10.1038/s41409-024-02315-1. [PMID: 38773282 DOI: 10.1038/s41409-024-02315-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 05/13/2024] [Accepted: 05/15/2024] [Indexed: 05/23/2024]
Affiliation(s)
- Thomas Pfeiffer
- Department of Pediatrics, Division of Hematology/Oncology, Washington University School of Medicine, St. Louis, MO, USA.
| | | | - Shalini Shenoy
- Department of Pediatrics, Division of Hematology/Oncology, Washington University School of Medicine, St. Louis, MO, USA
| | - Melissa Mavers
- Department of Pediatrics, Division of Hematology/Oncology, Washington University School of Medicine, St. Louis, MO, USA
| | - Robert Hayashi
- Department of Pediatrics, Division of Hematology/Oncology, Washington University School of Medicine, St. Louis, MO, USA
| | - Jeffrey Bednarski
- Department of Pediatrics, Division of Hematology/Oncology, Washington University School of Medicine, St. Louis, MO, USA
| | - Abby Green
- Department of Pediatrics, Division of Hematology/Oncology, Washington University School of Medicine, St. Louis, MO, USA
- Department of Pediatrics, Division of Infectious Diseases, Washington University School of Medicine, St. Louis, MO, USA
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2
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Loy C, Cheng MP, Gonzalez-Bocco IH, Lenz J, Belcher E, Bliss A, Eweis-LaBolle D, Chu T, Ritz J, De Vlaminck I. Cell-free RNA Liquid Biopsy to Monitor Hematopoietic Stem Cell Transplantation. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.05.15.24307448. [PMID: 38798589 PMCID: PMC11118637 DOI: 10.1101/2024.05.15.24307448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Hematopoietic Stem Cell Transplantation (HSCT) is one of the oldest and most successful immunotherapies. Yet, despite long-standing success in the use of HSCT for the treatment of blood cancers and severe immune disorders, monitoring post-transplant complications remains a challenge due to a lack of informative diagnostic tests. Here, we investigate the utility of cell-free RNA (cfRNA) in plasma as a liquid biopsy to monitor allogeneic HSCT recipients during and after treatment. We assayed longitudinal samples from 92 HSCT recipients by cfRNA sequencing and show that cfRNA provides insight into treatment and recovery trajectories, immune dynamics in response to transplantation, infection, and solid-tissue injury associated with Graft-Versus-Host Disease. Collectively, our results provide support for the use of plasma cfRNA profiling to monitor complications of HSCT.
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Affiliation(s)
- Conor Loy
- Meinig School of Biomedical Engineering, Cornell University; Ithaca, 14850, USA
- Department of Molecular Biology and Genetics, Cornell University; Ithaca, 14853, USA
| | - Matthew P. Cheng
- Department of Medical Oncology, Dana-Farber Cancer Institute; Boston, 02215, USA
- Division of Infectious Disease, Brigham and Women’s Hospital; Boston, 02215, USA
| | - Isabel H. Gonzalez-Bocco
- Department of Medical Oncology, Dana-Farber Cancer Institute; Boston, 02215, USA
- Division of Infectious Disease, Brigham and Women’s Hospital; Boston, 02215, USA
| | - Joan Lenz
- Meinig School of Biomedical Engineering, Cornell University; Ithaca, 14850, USA
| | - Emma Belcher
- Meinig School of Biomedical Engineering, Cornell University; Ithaca, 14850, USA
| | - Andrew Bliss
- Meinig School of Biomedical Engineering, Cornell University; Ithaca, 14850, USA
| | - Daniel Eweis-LaBolle
- Department of Molecular Biology and Genetics, Cornell University; Ithaca, 14853, USA
| | - Tinyi Chu
- Meinig School of Biomedical Engineering, Cornell University; Ithaca, 14850, USA
| | - Jerome Ritz
- Department of Medical Oncology, Dana-Farber Cancer Institute; Boston, 02215, USA
- Department of Medicine, Harvard Medical School, Boston, 02115, USA
| | - Iwijn De Vlaminck
- Meinig School of Biomedical Engineering, Cornell University; Ithaca, 14850, USA
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3
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Gao H, Wang J, Zheng X, Pei X, Zheng Y, Zhai W, Zhang R, Chen X, Ma Q, Wei J, Yang D, Pang A, He Y, Feng S, Cao Y, Jiang E. Ursodeoxycholic acid does not reduce SARS-CoV-2 infection in newly allogeneic hematopoietic stem cell transplantation recipients: a prospective NICHE cohort. Front Cell Infect Microbiol 2024; 14:1324019. [PMID: 38505288 PMCID: PMC10949982 DOI: 10.3389/fcimb.2024.1324019] [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: 10/18/2023] [Accepted: 02/14/2024] [Indexed: 03/21/2024] Open
Abstract
Introduction Retrospective studies have suggested that Ursodeoxycholic Acid (UDCA) provide a protective effect against SARS-CoV-2 infection, particularly in patients with liver disease. However, it is uncertain whether this finding can be extended to the allogeneic hematopoietic stem cell transplantation (allo-HSCT) cohort. Therefore, we aim to examine the protective potential of UDCA against SARS-CoV-2 infection in recently received allo-HSCT patients. Methods During the initial Omicron variant wave in China (December 2022 to February 2023), we conducted a prospective observational study involving 91 hospitalized patients who had undergone allo-HSCT within the previous 6 months as part of the National Longitudinal Cohort of Hematological Diseases (NICHE). Throughout hospitalization, we continuously monitored the status of COVID-19 using SARS-CoV-2 PCR kits or SARS-CoV-2 Antigen Rapid Tests. Results Among these patients, 67.0% (n = 61) were confirmed to have contracted SARS-CoV-2 infection. For the 52 patients evaluated, 23.1% experienced a severe or critical clinical course. There was no difference in the infection rate or severity of COVID-19 between the UDCA group and the non-UDCA group. We found that only patients transplanted between 3 and 6 months ago demonstrated a higher risk of SARS-CoV-2 infection compared to those who received allo-HSCT within 3 months (Odds Ratio [OR]: 3.241, 95% Confidence Interval [CI]: 1.287-8.814, P = 0.016). But other clinical factors, such as administration of UDCA, showed no difference. Notably, only age ≥38 years old remained as an independent risk factor for a severe clinical course of SARS-CoV-2 infection (OR: 3.664, 95% CI: 1.129-13.007, P = 0.035). Conclusion The effectiveness of UDCA in protecting newly allo-HSCT recipients against SARS-CoV-2 infection remains unconfirmed. Presently, the most effective strategy appears to be minimizing exposure to SARS-CoV-2. Clinical trial registration https://clinicaltrials.gov/ct2/show/NCT04645199, identifier NCT04645199.
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Affiliation(s)
- Hongye Gao
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Jiali Wang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Xinhui Zheng
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Xiaolei Pei
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Yawei Zheng
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Weihua Zhai
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Rongli Zhang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Xin Chen
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Qiaoling Ma
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Jialin Wei
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Donglin Yang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Aiming Pang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Yi He
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Sizhou Feng
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Yigeng Cao
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Erlie Jiang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
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4
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Green A, Rubinstein JD, Grimley M, Pfeiffer T. Virus-Specific T Cells for the Treatment of Systemic Infections Following Allogeneic Hematopoietic Cell and Solid Organ Transplantation. J Pediatric Infect Dis Soc 2024; 13:S49-S57. [PMID: 38417086 DOI: 10.1093/jpids/piad077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 09/25/2023] [Indexed: 03/01/2024]
Abstract
Viral infections are a major source of morbidity and mortality in the context of immune deficiency and immunosuppression following allogeneic hematopoietic cell (allo-HCT) and solid organ transplantation (SOT). The pharmacological treatment of viral infections is challenging and often complicated by limited efficacy, the development of resistance, and intolerable side effects. A promising strategy to rapidly restore antiviral immunity is the adoptive transfer of virus-specific T cells (VST). This therapy involves the isolation and ex vivo expansion or direct selection of antigen-specific T cells from healthy seropositive donors, followed by infusion into the patient. This article provides a practical guide to VST therapy by reviewing manufacturing techniques, donor selection, and treatment indications. The safety and efficacy data of VSTs gathered in clinical trials over nearly 30 years is summarized. Current challenges and limitations are discussed, as well as opportunities for further research and development.
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Affiliation(s)
- Abby Green
- Department of Pediatrics, Division of Hematology/Oncology, Washington University School of Medicine, St. Louis, Missouri, USA
- Department of Pediatrics, Division of Infectious Diseases, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Jeremy D Rubinstein
- Division of Oncology, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Michael Grimley
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
- Division of Bone Marrow Transplantation and Immune Deficiency, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Thomas Pfeiffer
- Department of Pediatrics, Division of Hematology/Oncology, Washington University School of Medicine, St. Louis, Missouri, USA
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Rein AF, Lauruschkat CD, Muchsin I, Köchel C, Tischer-Zimmermann S, Bauersfeld L, Nelde A, Lübke M, Prusty BK, Schlosser A, Halenius A, Eiz-Vesper B, Dölken L, Grigoleit GU, Einsele H, Erhard F, Kraus S. Identification of novel canonical and cryptic HCMV-specific T-cell epitopes for HLA-A∗03 and HLA-B∗15 via peptide-PRISM. Blood Adv 2024; 8:712-724. [PMID: 38127299 PMCID: PMC10845030 DOI: 10.1182/bloodadvances.2023011120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 11/13/2023] [Accepted: 11/30/2023] [Indexed: 12/23/2023] Open
Abstract
ABSTRACT Human cytomegalovirus (HCMV) reactivation poses a substantial risk to patients receiving tranplants. Effective risk stratification and vaccine development is hampered by a lack of HCMV-derived immunogenic peptides in patients with common HLA-A∗03:01 and HLA-B∗15:01 haplotypes. This study aimed to discover novel HCMV immunogenic peptides for these haplotypes by combining ribosome sequencing (Ribo-seq) and mass spectrometry with state-of-the-art computational tools, Peptide-PRISM and Probabilistic Inference of Codon Activities by an EM Algorithm. Furthermore, using machine learning, an algorithm was developed to predict immunogenicity based on translational activity, binding affinity, and peptide localization within small open reading frames to identify the most promising peptides for in vitro validation. Immunogenicity of these peptides was subsequently tested by analyzing peptide-specific T-cell responses of HCMV-seropositive and -seronegative healthy donors as well as patients with transplants. This resulted in the direct identification of 3 canonical and 1 cryptic HLA-A∗03-restricted immunogenic peptides as well as 5 canonical and 1 cryptic HLA-B∗15-restricted immunogenic peptide, with a specific interferon gamma-positive (IFN-γ+)/CD8+ T-cell response of ≥0.02%. High T-cell responses were detected against 2 HLA-A∗03-restricted and 3 HLA-B∗15-restricted canonical peptides with frequencies of up to 8.77% IFN-γ+/CD8+ T cells in patients after allogeneic stem cell transplantation. Therefore, our comprehensive strategy establishes a framework for efficient identification of novel immunogenic peptides from both existing and novel Ribo-seq data sets.
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Affiliation(s)
- Alice Felicitas Rein
- Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
| | | | - Ihsan Muchsin
- Institute for Virology and Immunobiology, Julius-Maximilians-University Würzburg, Würzburg, Germany
| | - Carolin Köchel
- Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
| | - Sabine Tischer-Zimmermann
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Hannover, Germany
| | - Liane Bauersfeld
- Institute of Virology, University Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Annika Nelde
- Department of Peptide-based Immunotherapy, University Hospital Tübingen, Tübingen, Germany
- Institute for Cell Biology, Department of Immunology, University of Tübingen, Tübingen, Germany
- Cluster of Excellence iFIT (EXC2180) “Image-Guided and Functionally Instructed Tumor Therapies,” University of Tübingen, Tübingen, Germany
| | - Maren Lübke
- Institute for Cell Biology, Department of Immunology, University of Tübingen, Tübingen, Germany
| | - Bhupesh Kumar Prusty
- Institute for Virology and Immunobiology, Julius-Maximilians-University Würzburg, Würzburg, Germany
| | - Andreas Schlosser
- Rudolf Virchow Center - Center for Integrative and Translational Bioimaging, Julius-Maximilians-University Würzburg, Würzburg, Germany
| | - Anne Halenius
- Institute of Virology, University Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Britta Eiz-Vesper
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Hannover, Germany
| | - Lars Dölken
- Institute for Virology and Immunobiology, Julius-Maximilians-University Würzburg, Würzburg, Germany
| | - Götz Ulrich Grigoleit
- Department of Hematology, Oncology and Immunology, Helios Hospital Duisburg, Duisburg, Germany
| | - Hermann Einsele
- Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
| | - Florian Erhard
- Institute for Virology and Immunobiology, Julius-Maximilians-University Würzburg, Würzburg, Germany
| | - Sabrina Kraus
- Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
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Garner W, Hamza A, Haidar G. Investigational non-antibiotic therapeutics for infections in hematopoietic cell transplant recipients and patients with hematologic malignancies receiving cellular therapies. Transpl Infect Dis 2023; 25 Suppl 1:e14193. [PMID: 37957893 DOI: 10.1111/tid.14193] [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: 08/14/2023] [Revised: 10/14/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023]
Abstract
In the age of progressive antimicrobial resistance and increased difficulty combating infections in immunocompromised hosts, there has been renewed interest in the use of nontraditional therapeutics for infections. Herein, we review the use of investigational non-pharmaceutical anti-infective agents targeting fungal, bacterial, and viral infections in patients with hematologic malignancies, focusing on those receiving hematopoietic cell transplantation or cellular therapies. We discuss immune checkpoint inhibitors, granulocyte transfusions, bone marrow colony-stimulating factors, bacteriophages, fecal microbiota transplantation, and virus specific T-cell therapy. Although there is promising early experience with many of these treatments, further studies will be required to define their optimal role in the therapeutic armamentarium against infections in immunocompromised hosts.
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Affiliation(s)
- Will Garner
- Division of Infectious Diseases, Department of Internal Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Amjad Hamza
- American University of Beirut, Beirut, Lebanon
| | - Ghady Haidar
- Division of Infectious Diseases, Department of Internal Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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McMahon‑Cole H, Johnson A, Sadat Aghamiri S, Helikar T, Crawford LB. Modeling and Remodeling the Cell: How Digital Twins and HCMV Can Elucidate the Complex Interactions of Viral Latency, Epigenetic Regulation, and Immune Responses. CURRENT CLINICAL MICROBIOLOGY REPORTS 2023; 10:141-151. [PMID: 37901689 PMCID: PMC10601359 DOI: 10.1007/s40588-023-00201-w] [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] [Accepted: 07/12/2023] [Indexed: 10/31/2023]
Abstract
Purpose of Review Human cytomegalovirus (HCMV), while asymptomatic in most, causes significant complications during fetal development, following transplant or in immunosuppressed individuals. The host-virus interactions regulating viral latency and reactivation and viral control of the cellular environment (immune regulation, differentiation, epigenetics) are highly complex. Understanding these processes is essential to controlling infection and can be leveraged as a novel approach for understanding basic cell biology. Recent Findings Immune digital twins (IDTs) are digital simulations integrating knowledge of human immunology, physiology, and patient-specific clinical data to predict individualized immune responses and targeted treatments. Recent studies used IDTs to elucidate mechanisms of T cells, dendritic cells, and epigenetic control-all key to HCMV biology. Summary Here, we discuss how leveraging the unique biology of HCMV and IDTs will clarify immune response dynamics, host-virus interactions, and viral latency and reactivation and serve as a powerful IDT-validation platform for individualized and holistic health management.
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Affiliation(s)
- Hana McMahon‑Cole
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Alicia Johnson
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Sara Sadat Aghamiri
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Tomáš Helikar
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Lindsey B. Crawford
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
- Nebraska Center for Virology, Lincoln, NE, USA
- Nebraska Center for Integrated Biomolecular Communication, Lincoln, NE, USA
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Crawford LB. Hematopoietic stem cells and betaherpesvirus latency. Front Cell Infect Microbiol 2023; 13:1189805. [PMID: 37346032 PMCID: PMC10279960 DOI: 10.3389/fcimb.2023.1189805] [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: 03/20/2023] [Accepted: 05/11/2023] [Indexed: 06/23/2023] Open
Abstract
The human betaherpesviruses including human cytomegalovirus (HCMV), human herpesvirus (HHV)-6a and HHV-6b, and HHV-7 infect and establish latency in CD34+ hematopoietic stem and progenitor cells (HPCs). The diverse repertoire of HPCs in humans and the complex interactions between these viruses and host HPCs regulate the viral lifecycle, including latency. Precise manipulation of host and viral factors contribute to preferential maintenance of the viral genome, increased host cell survival, and specific manipulation of the cellular environment including suppression of neighboring cells and immune control. The dynamic control of these processes by the virus regulate inter- and intra-host signals critical to the establishment of chronic infection. Regulation occurs through direct viral protein interactions and cellular signaling, miRNA regulation, and viral mimics of cellular receptors and ligands, all leading to control of cell proliferation, survival, and differentiation. Hematopoietic stem cells have unique biological properties and the tandem control of virus and host make this a unique environment for chronic herpesvirus infection in the bone marrow. This review highlights the elegant complexities of the betaherpesvirus latency and HPC virus-host interactions.
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Affiliation(s)
- Lindsey B Crawford
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, United States
- Nebraska Center for Virology, University of Nebraska-Lincoln, Lincoln, NE, United States
- Nebraska Center for Integrated Biomolecular Communication, University of Nebraska-Lincoln, Lincoln, NE, United States
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9
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La Rosa C, Aldoss I, Park Y, Yang D, Zhou Q, Gendzekhadze K, Kaltcheva T, Rida W, Dempsey S, Arslan S, Artz A, Ball B, Nikolaenko L, Pullarkat VA, Nakamura R, Diamond DJ. Hematopoietic stem cell donor vaccination with cytomegalovirus triplex augments frequencies of functional and durable cytomegalovirus-specific T cells in the recipient: A novel strategy to limit antiviral prophylaxis. Am J Hematol 2023; 98:588-597. [PMID: 36594185 PMCID: PMC10294297 DOI: 10.1002/ajh.26824] [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: 10/19/2022] [Revised: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 01/04/2023]
Abstract
To enhance protective cytomegalovirus (CMV)-specific T cells in immunosuppressed recipients of an allogeneic hematopoietic cell transplant (HCT), we evaluated post-HCT impact of vaccinating healthy HCT donors with Triplex. Triplex is a viral vectored recombinant vaccine expressing three immunodominant CMV antigens. The vector is modified vaccinia Ankara (MVA), an attenuated, non-replicating poxvirus derived from the vaccinia virus strain Ankara. It demonstrated tolerability and immunogenicity in healthy adults and HCT recipients, in whom it also reduced CMV reactivation. Here, we report feasibility, safety, and immunological outcomes of a pilot phase 1 trial (NCT03560752 at ClinicalTrials.gov) including 17 CMV-seropositive recipients who received an HCT from a matched related donor (MRD) vaccinated with 5.1 × 108 pfu/ml of Triplex before cell harvest (median 15, range 11-28 days). Donor and recipient pairs who committed to participation in the trial resulted in exceptional adherence to the protocol. Triplex was well-tolerated with limited adverse events in donors and recipients, who all engrafted with full donor chimerism. On day 28 post-HCT, levels of functional vaccinia- and CMV-specific CD137+ CD8+ T cells were significantly higher (p < .0001 and p = .0174, respectively) in recipients of Triplex vaccinated MRD than unvaccinated MRD (control cohort). Predominantly, central and effector memory CMV-specific T-cell responses continued to steadily expand through 1-year follow-up. CMV viremia requiring antivirals developed in three recipients (18%). In summary, this novel approach represents a promising strategy applicable to different HCT settings for limiting the use of antiviral prophylaxis, which can impair and delay CMV-specific immunity, leading to CMV reactivation requiring treatment.
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Affiliation(s)
- Corinna La Rosa
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
| | - Ibrahim Aldoss
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
| | - Yoonsuh Park
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
| | - Dongyun Yang
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
| | - Qiao Zhou
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
| | - Ketevan Gendzekhadze
- Histocompatibility Laboratory, Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
| | - Teodora Kaltcheva
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
| | | | - Shannon Dempsey
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
| | - Shukaib Arslan
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
| | - Andrew Artz
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
| | - Brian Ball
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
| | - Liana Nikolaenko
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
| | - Vinod A Pullarkat
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
| | - Ryotaro Nakamura
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
| | - Don J. Diamond
- Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
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10
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Mo F, Watanabe N, Omdahl KI, Burkhardt PM, Ding X, Hayase E, Panoskaltsis-Mortari A, Jenq RR, Heslop HE, Kean LS, Brenner MK, Tkachev V, Mamonkin M. Engineering T cells to suppress acute GVHD and leukemia relapse after allogeneic hematopoietic stem cell transplantation. Blood 2023; 141:1194-1208. [PMID: 36044667 PMCID: PMC10023730 DOI: 10.1182/blood.2022016052] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 07/15/2022] [Accepted: 08/11/2022] [Indexed: 11/20/2022] Open
Abstract
Acute graft-versus-host disease (aGVHD) limits the therapeutic benefit of allogeneic hematopoietic stem cell transplantation (allo-HSCT) and requires immunosuppressive prophylaxis that compromises antitumor and antipathogen immunity. OX40 is a costimulatory receptor upregulated on circulating T cells in aGVHD and plays a central role in driving the expansion of alloreactive T cells. Here, we show that OX40 is also upregulated on T cells infiltrating GVHD target organs in a rhesus macaque model, supporting the hypothesis that targeted ablation of OX40+ T cells will mitigate GVHD pathogenesis. We thus created an OX40-specific cytotoxic receptor that, when expressed on human T cells, enables selective elimination of OX40+ T cells. Because OX40 is primarily upregulated on CD4+ T cells upon activation, engineered OX40-specific T cells mediated potent cytotoxicity against activated CD4+ T cells and suppressed alloreactive T-cell expansion in a mixed lymphocyte reaction model. OX40 targeting did not inhibit antiviral activity of memory T cells specific to Epstein-Barr virus, cytomegalovirus, and adenoviral antigens. Systemic administration of OX40-targeting T cells fully protected mice from fatal xenogeneic GVHD mediated by human peripheral blood mononuclear cells. Furthermore, combining OX40 targeting with a leukemia-specific chimeric antigen receptor in a single T cell product provides simultaneous protection against leukemia and aGVHD in a mouse xenograft model of residual disease posttransplant. These results underscore the central role of OX40+ T cells in mediating aGVHD pathogenesis and support the feasibility of a bifunctional engineered T-cell product derived from the stem cell donor to suppress both disease relapse and aGVHD following allo-HSCT.
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Affiliation(s)
- Feiyan Mo
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children’s Hospital and Houston Methodist Hospital, Houston, TX
- Graduate Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX
| | - Norihiro Watanabe
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children’s Hospital and Houston Methodist Hospital, Houston, TX
| | - Kayleigh I. Omdahl
- Division of Pediatric Hematology/Oncology, Boston Children’s Hospital, Boston, MA
- Department of Pediatrics, Harvard Medical School, Boston, MA
| | - Phillip M. Burkhardt
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children’s Hospital and Houston Methodist Hospital, Houston, TX
- Graduate Program in Immunology and Microbiology, Baylor College of Medicine, Houston, TX
| | - Xiaoyun Ding
- Department of Neuroscience, Baylor College of Medicine, Houston, TX
| | - Eiko Hayase
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Angela Panoskaltsis-Mortari
- Division of Blood and Marrow Transplantation, Department of Pediatrics, Masonic Cancer Center, University of Minnesota, Minneapolis, MN
| | - Robert R. Jenq
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Helen E. Heslop
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children’s Hospital and Houston Methodist Hospital, Houston, TX
- Graduate Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX
| | - Leslie S. Kean
- Division of Pediatric Hematology/Oncology, Boston Children’s Hospital, Boston, MA
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA
| | - Malcolm K. Brenner
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children’s Hospital and Houston Methodist Hospital, Houston, TX
- Graduate Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX
- Graduate Program in Immunology and Microbiology, Baylor College of Medicine, Houston, TX
| | - Victor Tkachev
- Division of Pediatric Hematology/Oncology, Boston Children’s Hospital, Boston, MA
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA
| | - Maksim Mamonkin
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children’s Hospital and Houston Methodist Hospital, Houston, TX
- Graduate Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX
- Graduate Program in Immunology and Microbiology, Baylor College of Medicine, Houston, TX
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX
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11
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Pfeiffer T, Tzannou I, Wu M, Ramos C, Sasa G, Martinez C, Lulla P, Krance RA, Scherer L, Ruderfer D, Naik S, Bocchini C, Fraser IP, Patel B, Ward D, Wang T, Heslop HE, Leen AM, Omer B. Posoleucel, an Allogeneic, Off-the-Shelf Multivirus-Specific T-Cell Therapy, for the Treatment of Refractory Viral Infections in the Post-HCT Setting. Clin Cancer Res 2023; 29:324-330. [PMID: 36628536 PMCID: PMC9843433 DOI: 10.1158/1078-0432.ccr-22-2415] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/22/2022] [Accepted: 11/09/2022] [Indexed: 01/12/2023]
Abstract
PURPOSE Viral infections are a major cause of morbidity and mortality following allogeneic hematopoietic cell transplantation (allo-HCT). In the absence of safe and effective antiviral treatments, virus-specific T cells have emerged as a promising therapeutic option. Posoleucel is a multivirus-specific T-cell therapy for off-the-shelf use against six viral infections that commonly occur in allo-HCT recipients: adenovirus, BK virus (BKV), cytomegalovirus, Epstein-Barr virus, human herpes virus-6, and JC virus. PATIENTS AND METHODS We conducted an open-label, phase II trial to determine the feasibility and safety of posoleucel in allo-HCT recipients infected with one or more of these viruses. Infections were either unresponsive to or patients were unable to tolerate standard antiviral therapies. Fifty-eight adult and pediatric patients were enrolled and treated. RESULTS Posoleucel was well tolerated, with no cytokine release syndrome or other infusion-related toxicities; two patients (3.4%) developed Grade 2 and one patient (1.7%) Grade 3 GvHD during the trial. The overall response rate 6 weeks after the first posoleucel infusion was 95%, with a median plasma viral load reduction of 97%. Of the 12 patients who had two or more target viral infections identified at study entry, 10 (83%) had a clinical response for all evaluable viruses. Of the 23 patients treated for refractory BKV-associated hemorrhagic cystitis, 74% had resolution of symptoms and macroscopic hematuria by 6 weeks post-infusion. CONCLUSIONS In this open-label trial, treatment of refractory viral infections/disease in allo-HCT recipients with posoleucel was feasible, safe, and effective.
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Affiliation(s)
- Thomas Pfeiffer
- Division of Hematology/Oncology, Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri.,Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, Texas.,Corresponding Authors: Bilal Omer, Baylor College of Medicine, 1102 Bates Street, Suite 1640.16, Houston, TX 77030. Phone: 183-2824-6855; and Fax: 183-2825-4732; E-mail: ; and Thomas Pfeiffer,
| | - Ifigeneia Tzannou
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, Texas
| | - Mengfen Wu
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, Texas.,Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas
| | - Carlos Ramos
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, Texas
| | - Ghadir Sasa
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, Texas
| | - Caridad Martinez
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, Texas
| | - Premal Lulla
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, Texas
| | - Robert A. Krance
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, Texas
| | - Lauren Scherer
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, Texas
| | - Daniel Ruderfer
- Section of Pediatric Infectious Disease, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas
| | - Swati Naik
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, Texas
| | - Claire Bocchini
- Section of Pediatric Infectious Disease, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas
| | | | | | | | - Tao Wang
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, Texas.,Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas
| | - Helen E. Heslop
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, Texas
| | - Ann M. Leen
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, Texas.,AlloVir, Waltham, Massachusetts
| | - Bilal Omer
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, Texas.,Corresponding Authors: Bilal Omer, Baylor College of Medicine, 1102 Bates Street, Suite 1640.16, Houston, TX 77030. Phone: 183-2824-6855; and Fax: 183-2825-4732; E-mail: ; and Thomas Pfeiffer,
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12
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Lipka E, Chadderdon AM, Harteg CC, Doherty MK, Simon ES, Domagala JM, Reyna DM, Hutchings KM, Gan X, White AD, Hartline CB, Harden EA, Keith KA, Prichard MN, James SH, Cardin RD, Bernstein DI, Spencer JF, Tollefson AE, Wold WSM, Toth K. NPP-669, a Novel Broad-Spectrum Antiviral Therapeutic with Excellent Cellular Uptake, Antiviral Potency, Oral Bioavailability, Preclinical Efficacy, and a Promising Safety Margin. Mol Pharm 2023; 20:370-382. [PMID: 36484496 PMCID: PMC9811456 DOI: 10.1021/acs.molpharmaceut.2c00668] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
DNA viruses are responsible for many diseases in humans. Current treatments are often limited by toxicity, as in the case of cidofovir (CDV, Vistide), a compound used against cytomegalovirus (CMV) and adenovirus (AdV) infections. CDV is a polar molecule with poor bioavailability, and its overall clinical utility is limited by the high occurrence of acute nephrotoxicity. To circumvent these disadvantages, we designed nine CDV prodrug analogues. The prodrugs modulate the polarity of CDV with a long sulfonyl alkyl chain attached to one of the phosphono oxygens. We added capping groups to the end of the alkyl chain to minimize β-oxidation and focus the metabolism on the phosphoester hydrolysis, thereby tuning the rate of this reaction by altering the alkyl chain length. With these modifications, the prodrugs have excellent aqueous solubility, optimized metabolic stability, increased cellular permeability, and rapid intracellular conversion to the pharmacologically active diphosphate form (CDV-PP). The prodrugs exhibited significantly enhanced antiviral potency against a wide range of DNA viruses in infected human foreskin fibroblasts. Single-dose intravenous and oral pharmacokinetic experiments showed that the compounds maintained plasma and target tissue levels of CDV well above the EC50 for 24 h. These experiments identified a novel lead candidate, NPP-669. NPP-669 demonstrated efficacy against CMV infections in mice and AdV infections in hamsters following oral (p.o.) dosing at a dose of 1 mg/kg BID and 0.1 mg/kg QD, respectively. We further showed that NPP-669 at 30 mg/kg QD did not exhibit histological signs of toxicity in mice or hamsters. These data suggest that NPP-669 is a promising lead candidate for a broad-spectrum antiviral compound.
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Affiliation(s)
- Elke Lipka
- TSRL,
Inc., 540 Avis Dr., Suite
A, Ann Arbor, Michigan 48108, United States,. Phone: 734-663-4233 ext. 236. Fax: 734-663-3607
| | | | - Cheryl C. Harteg
- TSRL,
Inc., 540 Avis Dr., Suite
A, Ann Arbor, Michigan 48108, United States
| | - Matthew K. Doherty
- TSRL,
Inc., 540 Avis Dr., Suite
A, Ann Arbor, Michigan 48108, United States
| | - Eric S. Simon
- TSRL,
Inc., 540 Avis Dr., Suite
A, Ann Arbor, Michigan 48108, United States
| | - John M. Domagala
- TSRL,
Inc., 540 Avis Dr., Suite
A, Ann Arbor, Michigan 48108, United States
| | - Dawn M. Reyna
- TSRL,
Inc., 540 Avis Dr., Suite
A, Ann Arbor, Michigan 48108, United States
| | - Kim M. Hutchings
- College
of Pharmacy, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Xinmin Gan
- College
of Pharmacy, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Andrew D. White
- College
of Pharmacy, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Caroll B. Hartline
- Department
of Pediatrics, University of Alabama School
of Medicine, Birmingham, Alabama 35233, United
States
| | - Emma A. Harden
- Department
of Pediatrics, University of Alabama School
of Medicine, Birmingham, Alabama 35233, United
States
| | - Kathy A. Keith
- Department
of Pediatrics, University of Alabama School
of Medicine, Birmingham, Alabama 35233, United
States
| | - Mark N. Prichard
- Department
of Pediatrics, University of Alabama School
of Medicine, Birmingham, Alabama 35233, United
States
| | - Scott H. James
- Department
of Pediatrics, University of Alabama School
of Medicine, Birmingham, Alabama 35233, United
States
| | - Rhonda D. Cardin
- School
of Veterinary Medicine, Louisiana State
University, Baton
Rouge, Louisiana 70803, United States
| | - David I. Bernstein
- Cincinnati
Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio 45229, United States
| | | | - Ann E. Tollefson
- Saint Louis
University School of Medicine, St. Louis, Missouri 63104, United States
| | - William S. M. Wold
- Saint Louis
University School of Medicine, St. Louis, Missouri 63104, United States
| | - Karoly Toth
- Saint Louis
University School of Medicine, St. Louis, Missouri 63104, United States
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13
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Antonova TV, Nozhkin MS, Pobegalova ОЕ, Gorchakova ОV, Sabadash NV, Lioznov DA. An impact of CMV and HHV-6 reactivation on the course of early period after hematopoietic stem cell transplantation in patients with hematologic malignancies. JOURNAL INFECTOLOGY 2022. [DOI: 10.22625/2072-6732-2022-14-5-41-50] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Objective. To assess the impact of CMV and HHV-6 reactivation on the course of early post-transplant period in patients with hematologic malignancies. Materials. Retrospective analysis of medical records of 339 patients with hematologic malignancies who received hematopoietic stem cell transplantation (HSCT) was performed, and markers of CMV and HHV-6 infections were detected (specific IgG, EIA). Blood and other materials from HSCT recipients were tested (PCR) for viral DNA in early post-transplant period (up to Day 100). Results. Reactivation of viral infections after HSCT was discovered in 177 patients (52,2 %): CMV-infection was detected in 23 %, HHV-6 in 17,4 %, CMV+HHV-6 in 11,6 % of HSCT recipients. CMV DNA was predominantly identified in blood, while HHV-6 DNA was more frequently discovered in GIT mucosa and bone marrow. 40 % of 99 patients with HHV-6 reactivation had concomitant CMV+HHV-6 reactivation. In this group, the clinical manifestation of infections was registered significantly more frequently. Febrile neutropenia was more frequent in HSCT recipients with CMV reactivation, sepsis and graft hypofunction were diagnosed more frequently in presence of HHV-6 and predominantly HHV-6+CMV infections. The direct correlation (using Spearman’s method) between CMV and HHV-6 reactivation and terms of leukopoiesis recovery, engraftment terms, and transplant hypofunction was revealed. An impact of herpetic infections reactivation on the graft hypofunction and late recovery of leukopoiesis was confirmed using the logistic regression; its impact on the chimerism was revealed. In 72 % of cases, the graft failure in early post-transplant period occurred in patients with herpetic infections reactivation. Conclusion. HHV-6 and CMV reactivation in the early period after HSCT correlates with terms of leukopoiesis recovery, contributes to development of complications, and is an additional factor aggravating the course of the post-transplant period.
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Affiliation(s)
- T. V. Antonova
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - M. S. Nozhkin
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - О. Е. Pobegalova
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - О. V. Gorchakova
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - N. V. Sabadash
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - D. A. Lioznov
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov; Research Institute of Influenza named after A. A. Smorodintsev
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14
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Crawford LB. Human Embryonic Stem Cells as a Model for Hematopoietic Stem Cell Differentiation and Viral Infection. Curr Protoc 2022; 2:e622. [PMID: 36521018 PMCID: PMC9885899 DOI: 10.1002/cpz1.622] [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] [Indexed: 12/23/2022]
Abstract
Pluripotent human embryonic stem cell (hESC) lines are a valuable in vitro tool to differentiate specific cell lineages, including cells from all three germ layers, i.e., neuronal cells, myocytes, and hematopoietic cells, including progenitors (described here), lymphoid cells, and myeloid cells. However, dramatically different cell subtypes and functional properties of specific cells can arise depending on the differentiation technique used. We previously optimized hematopoietic stem cell differentiation from two different NIH-approved hESC lines to generate CD34+ hematopoietic progenitor cells (HPCs). Infection of these HPCs with a common herpesvirus (human cytomegalovirus) results in maintenance of viral latency, capability of viral reactivation, recapitulation of viral mutant phenotypes, and virus-induced myelosuppression of hematopoietic differentiation. However, different HPC subpopulations support different viral latency and reactivation phenotypes, and different hESC-to-HPC differentiation methods alter the ratio of stem cell subsets. In addition, differences in differentiation methods are dependent on both protocol/reagents and user techniques. Here, we report a simplified and optimized method to generate large numbers of CD34+ HPCs with consistent phenotypes and demonstrate a comparison of several common methods that can be used to control the ratio of available HPC subpopulations. A key aspect of this approach is that we achieve consistency in differentiation across users in different laboratories and, importantly, among newly trained individuals. © 2022 The Authors. Current Protocols published by Wiley Periodicals LLC. Basic Protocol 1: Maintenance of human embryonic stem cells (hESCs) Basic Protocol 2: Differentiation of hESCs to hematopoietic progenitor cells (HPCs) Basic Protocol 3: Downstream functional differentiation of hESC-derived HPCs to mature lineages Support Protocol 1: Freezing and testing frozen batches of hESCs Support Protocol 2: Counting hESCs Support Protocol 3: Phenotyping by flow cytometry.
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Affiliation(s)
- Lindsey B. Crawford
- Department of Biochemistry, Nebraska Center for Virology, Nebraska Center for Integrated Biomolecular Communication, University of Nebraska-Lincoln, Lincoln, Nebraska
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15
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Li B, Meng L, Tian Y, Lu Q, Gao L, Xiao P, Lu J, Li J, Wan L, Li Z, Hu S, Kong L. Outcomes and risk factors of hemorrhagic cystitis in pediatric allogeneic hematopoietic stem cell transplantation recipients using different graft source and condition with severe aplastic anemia. Hematology 2022; 27:714-722. [PMID: 35688452 DOI: 10.1080/16078454.2022.2078538] [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: 11/04/2022] Open
Abstract
BACKGROUND Hemorrhagic cystitis (HC) is a severe complication of allo-HSCT, characterized by irritative symptoms of the urinary tract and a higher morbidity rate. The risk factors and prognosis of HC are still unclear. OBJECTIVE The objective of this study is to identify risk factors and outcomes to improve treatment in pediatric SAA patients undergoing HSCTs in the Children's Hospital of Soochow University. METHODS A total of 97 SAA patients as a cohort were enrolled from 2010 to 2019 in the Children's Hospital of Soochow University and a number of factors related to HC and outcomes were analysed. In all transplants (except UCBT), patients received a combination of G-CSF stimulated bone marrow (BM) and peripheral blood stem cell (PBSC). The minimum number of CD34 + cells is 5 × 106 cells/kg. RESULTS Mononuclear cells dose (MNC, cut off: 8.53 × 108/kg) and grade II-IV acute graft versus host disease (aGVHD) were identified as independent risk factors for HC. Patients without HC had better overall survival (OS) than with HC (No HC: 98.6%±1.4% vs HC: 87.4% ± 6.8%, p = 0.03). CONCLUSION We concluded that aGVHD and MNC dose in graft might play an important role in the development of HC in pediatric SAA patients undergoing allo-HSCT. HC is also a key complication affecting the prognosis of children with SAA after allo-HSCT.
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Affiliation(s)
- Bohan Li
- Department of Hematology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Lijun Meng
- Department of Hematology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Yuanyuan Tian
- Department of Hematology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Qin Lu
- Department of Hematology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Li Gao
- Department of Hematology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Peifang Xiao
- Department of Hematology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Jun Lu
- Department of Hematology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Jie Li
- Department of Hematology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Lin Wan
- Department of Hematology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Zhiheng Li
- Department of Hematology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Shaoyan Hu
- Department of Hematology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Lingjun Kong
- Department of Hematology, Children's Hospital of Soochow University, Suzhou, People's Republic of China.,Children's Hospital of Wujiang District, Suzhou, People's Republic of China
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16
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Four-Parameter FluoroSpot Assay Reveals That the Varicella Zoster Virus Elicits a Robust Memory T Cell IL-10 Response throughout Childhood. J Virol 2022; 96:e0131022. [PMID: 36314824 PMCID: PMC9683015 DOI: 10.1128/jvi.01310-22] [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: 11/24/2022] Open
Abstract
During childhood, the composition and function of the T cell compartment undergoes significant changes. In healthy individuals, primary infection with herpesviruses is followed by latency, and occasional subclinical reactivation ensures transmission and contributes to an emerging pool of memory T cells. In immunocompromised individuals, herpesviruses can be life threatening. However, knowledge about the spectrum of virus-specific cytokine responses is limited. Here, we investigated peripheral blood mononuclear cells (PBMCs) from children with differential carrier statuses for cytomegalovirus (CMV), Epstein-Barr virus (EBV), and varicella zoster virus (VZV) (n = 32, age 1 to 17 years). We examined memory T cell subsets as well as IFN-γ-, IL-10-, IL-17A-, and IL-22-producing T cells after polyclonal activation or stimulation with viral peptides using flow cytometry and a 4-parameter FluoroSpot assay. Age and herpesvirus carriage influenced the size of the memory T cell subsets. A positive association between age and the number of IFN-γ-, IL-17A- and IL-22-producing T cells was found following polyclonal activation. For CMV, age was positively associated with IL-17A spot-forming cells (SFC), while for VZV, age was negatively associated with IL-22 and positively associated with IFN-γ SFC. Upon activation with CMV, VZV, and EBV peptides, IFN-γ SFCs dominated. Notably, VZV responses were characterized by a higher IL-10 SFC population compared to both CMV and EBV. Our findings suggest that cytokine responses vary across herpesvirus-type-specific memory T cells and may more adequately reflect their composition. An observed deviation between polyclonal and herpesvirus-specific T cell cytokine responses in children needs to be considered when interpreting the associations between herpesvirus carrier status and bulk T cell reactivity. In summary, these findings may have implications for the treatment of immunocompromised patients. IMPORTANCE Infection with herpesviruses accounts for 35 to 40 billion human cases worldwide. Despite this, little is known about how herpesviruses shape the immune system in the asymptomatic carrier. Particularly in children, primary infection is connected to no or mild symptoms ahead of latency for life. Most research on cellular responses against herpesviruses focuses on inflammatory cytokines associated with antiproliferative and antitumor mechanisms and not the spectrum of cytokine responses in healthy humans. This study investigated four divergent cytokine-producing T cell responses to herpesviruses, reflecting different immunological functions. Three common childhood herpesviruses were selected: Epstein-Barr virus, cytomegalovirus, and varicella-zoster virus. Curiously, not all viruses induced the same pattern of cytokines. Varicella-zoster responses were characterized by IL-10, which is considered regulatory. Besides broadening understanding of responses to herpesviruses, our results raise the possibility that reactivation of varicella-zoster may be counterproductive in cancer treatment through the action of IL-10-producing T-cells.
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17
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Söderström A, Vonlanthen S, Jönsson-Videsäter K, Mielke S, Lindahl H, Törlén J, Uhlin M. T cell receptor excision circles are potential predictors of survival in adult allogeneic hematopoietic stem cell transplantation recipients with acute myeloid leukemia. Front Immunol 2022; 13:954716. [PMID: 36211398 PMCID: PMC9540498 DOI: 10.3389/fimmu.2022.954716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 08/30/2022] [Indexed: 12/01/2022] Open
Abstract
Background Lymphocyte neogenesis from primary lymphoid organs is essential for a successful reconstitution of immunity after allogeneic hematopoietic stem cell transplantation (HSCT). This single-center retrospective study aimed to evaluate T cell receptor excision circles (TREC) and kappa-deleting recombination excision circles (KREC) as surrogate markers for T and B cell recovery, as predictors for transplantation-related outcomes in adult acute myeloid leukemia (AML) patients. Methods Ninety adult patients diagnosed with AML and treated with HSCT between 2010 and 2015 were included in the study. TREC and KREC levels were measured by quantitative PCR at 1, 3, 6, and 12 months after transplantation. Results Overall, excision circle levels increased between 3 and 6 months post-HSCT for TREC (p = 0.005) and 1 and 3 months for KREC (p = 0.0007). In a landmark survival analysis at 12 months post-HSCT, TREC levels were associated with superior overall survival (HR: 0.52, 95% CI: 0.34 - 0.81, p = 0.004). The incidence of viral infections within the first 100 days after transplantation was associated with lower TREC levels at 6 months (p = 0.0002). CMV reactivation was likewise associated with lower TREC levels at 6 months (p = 0.02) post-HSCT. KREC levels were not associated with clinical outcomes in statistical analyzes. Conclusions Results from the present study indicate that TREC measurement could be considered as part of the post-HSCT monitoring to identify AML patients with inferior survival after transplantation. Further prospective studies are warranted to validate these findings.
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Affiliation(s)
- Anna Söderström
- Department of Clinical Science, Intervention, and Technology, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Immunology and Transfusion Medicine, Karolinska University Hospital, Stockholm, Sweden
- *Correspondence: Anna Söderström,
| | - Sofie Vonlanthen
- Department of Clinical Science, Intervention, and Technology, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Immunology and Transfusion Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Kerstin Jönsson-Videsäter
- Department of Clinical Immunology and Transfusion Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Stephan Mielke
- Cell Therapy and Allogeneic Stem Cell Transplantation, Karolinska Comprehensive Cancer Center, Karolinska University Hospital, Stockholm, Sweden
| | - Hannes Lindahl
- Department of Clinical Immunology and Transfusion Medicine, Karolinska University Hospital, Stockholm, Sweden
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Johan Törlén
- Department of Clinical Science, Intervention, and Technology, Karolinska Institutet, Stockholm, Sweden
- Cell Therapy and Allogeneic Stem Cell Transplantation, Karolinska Comprehensive Cancer Center, Karolinska University Hospital, Stockholm, Sweden
| | - Michael Uhlin
- Department of Clinical Science, Intervention, and Technology, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Immunology and Transfusion Medicine, Karolinska University Hospital, Stockholm, Sweden
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18
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Vaitkute G, Panic G, Alber DG, Faizura-Yeop I, Cloutman-Green E, Swann J, Veys P, Standing JF, Klein N, Bajaj-Elliott M. Linking gastrointestinal microbiota and metabolome dynamics to clinical outcomes in paediatric haematopoietic stem cell transplantation. MICROBIOME 2022; 10:89. [PMID: 35689247 PMCID: PMC9185888 DOI: 10.1186/s40168-022-01270-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 04/04/2022] [Indexed: 05/05/2023]
Abstract
BACKGROUND Haematopoietic stem cell transplantation is a curative procedure for a variety of conditions. Despite major advances, a plethora of adverse clinical outcomes can develop post-transplantation including graft-versus-host disease and infections, which remain the major causes of morbidity and mortality. There is increasing evidence that the gastrointestinal microbiota is associated with clinical outcomes post-haematopoietic stem cell transplantation. Herein, we investigated the longitudinal dynamics of the gut microbiota and metabolome and potential associations to clinical outcomes in paediatric haematopoietic stem cell transplantation at a single centre. RESULTS On admission (baseline), the majority of patients presented with a different gut microbial composition in comparison with healthy control children with a significantly lower alpha diversity. A further, marked decrease in alpha diversity was observed immediately post-transplantation and in most microbial diversity, and composition did not return to baseline status whilst hospitalised. Longitudinal trajectories identified continuous fluctuations in microbial composition, with the dominance of a single taxon in a significant proportion of patients. Using pam clustering, three clusters were observed in the dataset. Cluster 1 was common pre-transplantation, characterised by a higher abundance of Clostridium XIVa, Bacteroides and Lachnospiraceae; cluster 2 and cluster 3 were more common post-transplantation with a higher abundance of Streptococcus and Staphylococcus in the former whilst Enterococcus, Enterobacteriaceae and Escherichia predominated in the latter. Cluster 3 was also associated with a higher risk of viraemia. Likewise, further multivariate analysis reveals Enterobacteriaceae, viraemia, use of total parenteral nutrition and various antimicrobials contributing towards cluster 3, Streptococcaceae, Staphylococcaceae, Neisseriaceae, vancomycin and metronidazole contributing towards cluster 2. Lachnospiraceae, Ruminococcaceae, Bifidobacteriaceae and not being on total parenteral nutrition contributed to cluster 1. Untargeted metabolomic analyses revealed changes that paralleled fluctuations in microbiota composition; importantly, low faecal butyrate was associated with a higher risk of viraemia. CONCLUSIONS These findings highlight the frequent shifts and dominations in the gut microbiota of paediatric patients undergoing haematopoietic stem cell transplantation. The study reveals associations between the faecal microbiota, metabolome and viraemia. To identify and explore the potential of microbial biomarkers that may predict the risk of complications post-HSCT, larger multi-centre studies investigating the longitudinal microbial profiling in paediatric haematopoietic stem cell transplantation are warranted. Video abstract.
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Affiliation(s)
- Gintare Vaitkute
- Infection, Immunity and Inflammation Section, UCL Great Ormond Street Institute of Child Health, London, WC1N 1EH UK
- Department of Surgical Biotechnology, UCL Division of Surgery and Interventional Science, UCL, London, NW3 2PF UK
| | - Gordana Panic
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, SW7 2AZ UK
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, SO17 1BJ UK
| | - Dagmar G. Alber
- Infection, Immunity and Inflammation Section, UCL Great Ormond Street Institute of Child Health, London, WC1N 1EH UK
| | | | | | - Jonathan Swann
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, SW7 2AZ UK
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, SO17 1BJ UK
| | - Paul Veys
- Great Ormond Street Hospital NHS Foundation Trust, London, WC1N 3JH UK
| | - Joseph F. Standing
- Infection, Immunity and Inflammation Section, UCL Great Ormond Street Institute of Child Health, London, WC1N 1EH UK
- Great Ormond Street Hospital NHS Foundation Trust, London, WC1N 3JH UK
| | - Nigel Klein
- Infection, Immunity and Inflammation Section, UCL Great Ormond Street Institute of Child Health, London, WC1N 1EH UK
- Great Ormond Street Hospital NHS Foundation Trust, London, WC1N 3JH UK
| | - Mona Bajaj-Elliott
- Infection, Immunity and Inflammation Section, UCL Great Ormond Street Institute of Child Health, London, WC1N 1EH UK
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19
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van der Velden FJS, van Delft F, Owens S, Llevadias J, McKean M, Pulford L, Taha Y, Williamson G, Campbell-Hewson Q, Hambleton S, Payne R, Duncan C, Johnston C, Spegarova J, Emonts M. Case Report: Severe Acute Pulmonary COVID-19 in a Teenager Post Autologous Hematopoietic Stem Cell Transplant. Front Pediatr 2022; 10:809061. [PMID: 35311038 PMCID: PMC8927762 DOI: 10.3389/fped.2022.809061] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 01/27/2022] [Indexed: 12/15/2022] Open
Abstract
Pulmonary severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in children is generally described as mild, and SARS-CoV-2 infection in immunocompromised children are observed as generally mild as well. A small proportion of pediatric patients will become critically ill due to (cardio)respiratory failure and require intensive care treatment. We report the case of a teenager with Hodgkin's lymphoma who acquired SARS-CoV-2 (detected by PCR) on the day of her autologous stem cell transplant and developed acute respiratory distress syndrome, successfully treated with a combination of antivirals, immunomodulation with steroids and biologicals, and ECMO.
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Affiliation(s)
- Fabian J. S. van der Velden
- Paediatric Immunology, Infectious Diseases and Allergy, Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
- Faculty of Medical Sciences, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Frederik van Delft
- Paediatric Oncology, Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Stephen Owens
- Paediatric Immunology, Infectious Diseases and Allergy, Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Judit Llevadias
- Paediatric Intensive Care, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Michael McKean
- Paediatric Respiratory Department, Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Lindsey Pulford
- Paediatric Intensive Care, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Yusri Taha
- Virology, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Grace Williamson
- Paediatric Intensive Care, Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Quentin Campbell-Hewson
- Paediatric Oncology, Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Sophie Hambleton
- Paediatric Immunology, Infectious Diseases and Allergy, Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
- Faculty of Medical Sciences, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Rebecca Payne
- Faculty of Medical Sciences, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Christopher Duncan
- Faculty of Medical Sciences, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
- Infectious Disease and Tropical Medicine, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Catriona Johnston
- Pharmacy, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Jarmila Spegarova
- Faculty of Medical Sciences, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Marieke Emonts
- Paediatric Immunology, Infectious Diseases and Allergy, Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
- Faculty of Medical Sciences, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
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Abstract
Human cytomegalovirus (HCMV) is a highly prevalent beta-herpesvirus and a significant cause of morbidity and mortality following hematopoietic and solid organ transplant, as well as the leading viral cause of congenital abnormalities. A key feature of the pathogenesis of HCMV is the ability of the virus to establish a latent infection in hematopoietic progenitor and myeloid lineage cells. The study of HCMV latency has been hampered by difficulties in obtaining and culturing primary cells, as well as an inability to quantitatively measure reactivating virus, but recent advances in both in vitro and in vivo models of HCMV latency and reactivation have led to a greater understanding of the interplay between host and virus. Key differences in established model systems have also led to controversy surrounding the role of viral gene products in latency establishment, maintenance, and reactivation. This review will discuss the details and challenges of various models including hematopoietic progenitor cells, monocytes, cell lines, and humanized mice. We highlight the utility and functional differences between these models and the necessary experimental design required to define latency and reactivation, which will help to generate a more complete picture of HCMV infection of myeloid-lineage cells.
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21
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The Role of γδ T Cells as a Line of Defense in Viral Infections after Allogeneic Stem Cell Transplantation: Opportunities and Challenges. Viruses 2022; 14:v14010117. [PMID: 35062321 PMCID: PMC8779492 DOI: 10.3390/v14010117] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/30/2021] [Accepted: 01/05/2022] [Indexed: 02/04/2023] Open
Abstract
In the complex interplay between inflammation and graft-versus-host disease (GVHD) after allogeneic stem cell transplantation (allo-HSCT), viral reactivations are often observed and cause substantial morbidity and mortality. As toxicity after allo-HSCT within the context of viral reactivations is mainly driven by αβ T cells, we describe that by delaying αβ T cell reconstitution through defined transplantation techniques, we can harvest the full potential of early reconstituting γδ T cells to control viral reactivations. We summarize evidence of how the γδ T cell repertoire is shaped by CMV and EBV reactivations after allo-HSCT, and their potential role in controlling the most important, but not all, viral reactivations. As most γδ T cells recognize their targets in an MHC-independent manner, γδ T cells not only have the potential to control viral reactivations but also to impact the underlying hematological malignancies. We also highlight the recently re-discovered ability to recognize classical HLA-molecules through a γδ T cell receptor, which also surprisingly do not associate with GVHD. Finally, we discuss the therapeutic potential of γδ T cells and their receptors within and outside the context of allo-HSCT, as well as the opportunities and challenges for developers and for payers.
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22
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Su Y, Stern A, Karantoni E, Nawar T, Han G, Zavras P, Dumke H, Cho C, Tamari R, Shaffer B, Giralt S, Jakubowski A, Perales MA, Papanicolaou G. Impact of Letermovir Primary Cytomegalovirus Prophylaxis on 1-Year Mortality After Allogeneic Hematopoietic Cell Transplantation: A Retrospective Cohort Study. Clin Infect Dis 2022; 75:795-804. [PMID: 34979021 PMCID: PMC9477449 DOI: 10.1093/cid/ciab1064] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Cytomegalovirus (CMV)-seropositive (R+) hematopoietic cell transplant (HCT) recipients have a survival disparity compared with CMV-seronegative recipient/donor (R-D-) pairs. We hypothesized that primary letermovir prophylaxis (LET) may abrogate this disparity. We investigated the relationship between LET and mortality at 1 year post-HCT. METHODS In this retrospective cohort study, we included adult R-D- or R+ patients who received HCT pre-LET (between 1 January 2013 through 15 December 2017) and post-LET (between 16 December 2017 through December 2019). R+ were categorized by LET receipt as R+/LET or R+/no-LET. Cox proportional hazard models were used to estimate the association of LET with all-cause mortality at 1 year after transplantation. RESULTS Of 848 patients analyzed, 305 were R-D-, 364 R+/no-LET, and 160 R+/LET. Because of similar mortality (adjusted hazard ratio [aHR], 1.29 [95% confidence interval {CI}, .76-2.18]; P = .353]) between pre-LET/R-D- and post-LET/R-D-, R-D- were combined into 1 group. Compared with R-D-, the aHR for mortality was 1.40 (95% CI, 1.01-1.93) for R+/no-LET and 0.89 (95% CI, .57-1.41) for R+/LET. Among R+, LET was associated with decreased risk of death (aHR, 0.62 [95% CI, .40-.98]); when conventional HCT and T-cell depleted HCT were analyzed separately, the aHR was 0.86 (95% CI, .51-1.43) and 0.21 (95% CI, .07-.65), respectively. CONCLUSIONS At 1 year post-HCT, LET was associated with closing the mortality disparity between R-D- and R+. Among all R+, LET was associated with decreased mortality, driven by 79% reduced incidence of death in T-cell depleted HCT.
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Affiliation(s)
| | | | - Eleni Karantoni
- Infectious Disease Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA,Department of Medicine, Air Force General Hospital, Athens, Greece
| | - Tamara Nawar
- Infectious Disease Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Gyuri Han
- Infectious Disease Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Phaedon Zavras
- Infectious Disease Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Henry Dumke
- Infectious Disease Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Christina Cho
- Department of Medicine, Weill Cornell Medical College, New York, New York, USA,Adult Bone Marrow Transplantation Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Roni Tamari
- Department of Medicine, Weill Cornell Medical College, New York, New York, USA,Adult Bone Marrow Transplantation Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Brian Shaffer
- Department of Medicine, Weill Cornell Medical College, New York, New York, USA,Adult Bone Marrow Transplantation Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Sergio Giralt
- Department of Medicine, Weill Cornell Medical College, New York, New York, USA,Adult Bone Marrow Transplantation Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Ann Jakubowski
- Department of Medicine, Weill Cornell Medical College, New York, New York, USA,Adult Bone Marrow Transplantation Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Miguel Angel Perales
- Department of Medicine, Weill Cornell Medical College, New York, New York, USA,Adult Bone Marrow Transplantation Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Genovefa Papanicolaou
- Correspondence: G. A. Papanicolaou, Infectious Disease Service, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065 ()
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23
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24
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Affiliation(s)
- Kamal Kant Sahu
- Department of Internal Medicine, Saint Vincent Hospital, Worcester, Massachusetts, USA
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25
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Lin RJ, Elias HK, van den Brink MRM. Immune Reconstitution in the Aging Host: Opportunities for Mechanism-Based Therapy in Allogeneic Hematopoietic Cell Transplantation. Front Immunol 2021; 12:674093. [PMID: 33953731 PMCID: PMC8089387 DOI: 10.3389/fimmu.2021.674093] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 03/30/2021] [Indexed: 12/13/2022] Open
Abstract
Older patients with hematologic malignancies are increasingly considered for allogeneic hematopoietic cell transplantation with encouraging outcomes. While aging-related thymic dysfunction remains a major obstacle to optimal and timely immune reconstitution post- transplantation, recent accumulating evidence has suggested that various aging hallmarks such as cellular senescence, inflamm-aging, and hematopoietic stem cell exhaustion, could also impact immune reconstitution post-transplantation in both thymic-dependent and independent manner. Here we review molecular and cellular aspects of immune senescence and immune rejuvenation related to allogeneic hematopoietic cell transplantation among older patients and discuss potential strategies for mechanism-based therapeutic intervention.
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Affiliation(s)
- Richard J Lin
- Adult Bone Marrow Transplantation (BMT) Service, Division of Hematologic Malignancies, Memorial Sloan Kettering Cancer Center, New York, NY, United States.,Department of Medicine, Weill Cornell Medical College, New York, NY, United States
| | - Harold K Elias
- Adult Bone Marrow Transplantation (BMT) Service, Division of Hematologic Malignancies, Memorial Sloan Kettering Cancer Center, New York, NY, United States.,Department of Medicine, Weill Cornell Medical College, New York, NY, United States
| | - Marcel R M van den Brink
- Adult Bone Marrow Transplantation (BMT) Service, Division of Hematologic Malignancies, Memorial Sloan Kettering Cancer Center, New York, NY, United States.,Department of Medicine, Weill Cornell Medical College, New York, NY, United States
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26
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Ferdjallah A, Young JAH, MacMillan ML. A Review of Infections After Hematopoietic Cell Transplantation Requiring PICU Care: Transplant Timeline Is Key. Front Pediatr 2021; 9:634449. [PMID: 34386464 PMCID: PMC8353083 DOI: 10.3389/fped.2021.634449] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 07/01/2021] [Indexed: 12/16/2022] Open
Abstract
Despite major advances in antimicrobial prophylaxis and therapy, opportunistic infections remain a major cause of morbidity and mortality after pediatric hematopoietic cell transplant (HCT). Risk factors associated with the development of opportunistic infections include the patient's underlying disease, previous infection history, co-morbidities, source of the donor graft, preparative therapy prior to the graft infusion, immunosuppressive agents, early and late toxicities after transplant, and graft-vs.-host disease (GVHD). Additionally, the risk for and type of infection changes throughout the HCT course and is greatly influenced by the degree and duration of immunosuppression of the HCT recipient. Hematopoietic cell transplant recipients are at high risk for rapid clinical decompensation from infections. The pediatric intensivist must remain abreast of the status of the timeline from HCT to understand the risk for different infections. This review will serve to highlight the infection risks over the year-long course of the HCT process and to provide key clinical considerations for the pediatric intensivist by presenting a series of hypothetical HCT cases.
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Affiliation(s)
- Asmaa Ferdjallah
- Department of Pediatrics, Division of Blood and Marrow Transplantation and Cellular Therapy, University of Minnesota, Minneapolis, MN, United States
| | - Jo-Anne H Young
- Department of Medicine, Division of Infectious Disease and International Medicine, Program in Transplant Infectious Disease, University of Minnesota, Minneapolis, MN, United States
| | - Margaret L MacMillan
- Department of Pediatrics, Division of Blood and Marrow Transplantation and Cellular Therapy, University of Minnesota, Minneapolis, MN, United States
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