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Liang F, Xu H, Cheng H, Zhao Y, Zhang J. Patient-derived tumor models: a suitable tool for preclinical studies on esophageal cancer. Cancer Gene Ther 2023; 30:1443-1455. [PMID: 37537209 DOI: 10.1038/s41417-023-00652-9] [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: 05/20/2023] [Revised: 07/13/2023] [Accepted: 07/26/2023] [Indexed: 08/05/2023]
Abstract
Esophageal cancer (EC) is the tenth most common cancer worldwide and has high morbidity and mortality. Its main subtypes include esophageal squamous cell carcinoma and esophageal adenocarcinoma, which are usually diagnosed during their advanced stages. The biological defects and inability of preclinical models to summarize completely the etiology of multiple factors, the complexity of the tumor microenvironment, and the genetic heterogeneity of tumors severely limit the clinical treatment of EC. Patient-derived models of EC not only retain the tissue structure, cell morphology, and differentiation characteristics of the original tumor, they also retain tumor heterogeneity. Therefore, compared with other preclinical models, they can better predict the efficacy of candidate drugs, explore novel biomarkers, combine with clinical trials, and effectively improve patient prognosis. This review discusses the methods and animals used to establish patient-derived models and genetically engineered mouse models, especially patient-derived xenograft models. It also discusses their advantages, applications, and limitations as preclinical experimental research tools to provide an important reference for the precise personalized treatment of EC and improve the prognosis of patients.
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Affiliation(s)
- Fan Liang
- Institutes of Health Central Plains, Xinxiang Medical University, Xinxiang, 453003, China
| | - Hongyan Xu
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, China
| | - Hongwei Cheng
- Institutes of Health Central Plains, Xinxiang Medical University, Xinxiang, 453003, China
| | - Yabo Zhao
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, China
| | - Junhe Zhang
- Institutes of Health Central Plains, Xinxiang Medical University, Xinxiang, 453003, China.
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, China.
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Ghorbanzadeh Neghab M, Jalili-Nik M, Soltani A, Afshari AR, Hassanian SM, Rafatpanah H, Rezaee SA, Sadeghnia HR, Ataei Azimi S, Mashkani B. Rigosertib is more potent than wortmannin and rapamycin against adult T-cell leukemia-lymphoma. Biofactors 2023; 49:1174-1188. [PMID: 37345860 DOI: 10.1002/biof.1985] [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: 02/13/2023] [Accepted: 06/09/2023] [Indexed: 06/23/2023]
Abstract
Human T lymphotropic virus type 1 (HTLV-1) infection can cause adult T-cell lymphoblastic leukemia (ATLL), an incurable, chemotherapy-resistant malignancy. In a quest for new therapeutic targets, our study sought to determine the levels of AKT, mTOR, and PI3K in ATLL MT-2 cells, HTLV-1 infected NIH/3T3 cells (Inf-3T3), and HTLV-1 infected patients (Carrier, HAM/TSP, and ATLL). Furthermore, the effects of rigosertib, wortmannin, and rapamycin on the PI3K/Akt/mTOR pathway to inhibit the proliferation of ATLL cells were examined. The results showed that mRNA expression of Akt/PI3K/mTOR was down-regulated in carrier, HAM/TSP, and ATLL patients, as well as MT-2, and Inf-3T3 cells, compared to the healthy individuals and untreated MT-2 and Inf-3T3 as controls. However, western blotting revealed an increase in the phosphorylated and activated forms of AKT and mTOR. Treating the cells with rapamycin, wortmannin, and rigosertib decreased the phosphorylated forms of Akt and mTOR and restored their mRNA expression levels. Using these inhibitors also significantly boosted the expression of the pro-apoptotic genes, Bax/Bcl-2 ratio as well as the expression of the tumor suppressor gene p53 in the MT-2 and Inf-3T3cells. Rigosertib was more potent than wortmannin and rapamycin in inducing sub-G1 and G2-M cell cycle arrest, as well as late apoptosis in the Inf-3T3 and MT-2 cells. It also synergized the cytotoxic effects of vincristine. These findings demonstrate that HTLV-1 downregulation of the mRNA level may occur as a negative feedback response to increased PI3K-Akt-mTOR phosphorylation by HTLV-1. Therefore, using rigosertib alone or in combination with common chemotherapy drugs may be beneficial in ATLL patients.
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Affiliation(s)
| | - Mohammad Jalili-Nik
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Arash Soltani
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Surgical Oncology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amir R Afshari
- Department of Physiology and Pharmacology, Faculty of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Seyed Mahdi Hassanian
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Houshang Rafatpanah
- Department of Medical Immunology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Abdolrahim Rezaee
- Department of Medical Immunology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamid R Sadeghnia
- Department of Pharmacology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Sajad Ataei Azimi
- Department of Hematology Oncology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Baratali Mashkani
- Bioinformatics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Silva De Castro I, Granato A, Mariante RM, Lima MA, Leite ACC, Espindola ODM, Pise-Masison CA, Franchini G, Linden R, Echevarria-Lima J. HTLV-1 p12 modulates the levels of prion protein (PrP C) in CD4 + T cells. Front Microbiol 2023; 14:1175679. [PMID: 37637115 PMCID: PMC10449582 DOI: 10.3389/fmicb.2023.1175679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 04/03/2023] [Indexed: 08/29/2023] Open
Abstract
Introduction Infection with human T cell lymphotropic virus type 1 (HTLV-1) is endemic in Brazil and is linked with pro-inflammatory conditions including HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP), a chronic neuroinflammatory incapacitating disease that culminates in loss of motor functions. The mechanisms underlying the onset and progression of HAM/TSP are incompletely understood. Previous studies have demonstrated that inflammation and infectious agents can affect the expression of cellular prion protein (PrPC) in immune cells. Methods Here, we investigated whether HTLV-1 infection affected PrPC content in cell lines and primary CD4+cells in vitro using flow cytometry and western blot assays. Results We found that HTLV-1 infection decreased the expression levels of PrPC and HTLV-1 Orf I encoded p12, an endoplasmic reticulum resident protein also known to affect post-transcriptionally cellular proteins such as MHC-class I and the IL-2 receptor. In addition, we observed a reduced percentage of CD4+ T cells from infected individuals expressing PrPC, which was reflected by IFN type II but not IL-17 expression. Discussion These results suggested that PrPC downregulation, linked to both HTLV-1 p12 and IFN-γ expression in CD4+ cells, may play a role in the neuropathogenesis of HTLV-1 infection.
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Affiliation(s)
- Isabela Silva De Castro
- Laboratório de Imunologia Básica e Aplicada, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Animal Models and Retroviral Vaccines Section, Vaccine Branch, National Cancer Institute, Bethesda, MD, United States
| | - Alessandra Granato
- Program in Genetics and Genome Biology, Hospital for Sick Children, Toronto, ON, Canada
| | - Rafael Meyer Mariante
- Laboratório de Neurogenesis, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Biologia Estrutural, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - Marco Antonio Lima
- Instituto Nacional de Infectologia Evandro Chagas (INI), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil
| | - Ana Claudia Celestino Leite
- Instituto Nacional de Infectologia Evandro Chagas (INI), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil
| | - Otávio de Melo Espindola
- Instituto Nacional de Infectologia Evandro Chagas (INI), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil
| | - Cynthia A. Pise-Masison
- Animal Models and Retroviral Vaccines Section, Vaccine Branch, National Cancer Institute, Bethesda, MD, United States
| | - Genoveffa Franchini
- Animal Models and Retroviral Vaccines Section, Vaccine Branch, National Cancer Institute, Bethesda, MD, United States
| | - Rafael Linden
- Laboratório de Neurogenesis, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Juliana Echevarria-Lima
- Laboratório de Imunologia Básica e Aplicada, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Kemeter LM, Birzer A, Heym S, Thoma-Kress AK. Milk Transmission of Mammalian Retroviruses. Microorganisms 2023; 11:1777. [PMID: 37512949 PMCID: PMC10386362 DOI: 10.3390/microorganisms11071777] [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: 05/30/2023] [Revised: 07/02/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023] Open
Abstract
The transmission of viruses from one host to another typically occurs through horizontal or vertical pathways. The horizontal pathways include transmission amongst individuals, usually through bodily fluids or excretions, while vertical transmission transpires from mother to their offspring, either during pregnancy, childbirth, or breastfeeding. While there are more than 200 human pathogenic viruses to date, only a small number of them are known to be transmitted via breast milk, including cytomegalovirus (CMV), human immunodeficiency virus type 1 (HIV-1), and human T cell lymphotropic virus type 1 (HTLV-1), the latter two belonging to the family Retroviridae. Breast milk transmission is a common characteristic among mammalian retroviruses, but there is a lack of reports summarizing our knowledge regarding this route of transmission of mammalian retroviruses. Here, we provide an overview of the transmission of mammalian exogenous retroviruses with a focus on Orthoretrovirinae, and we highlight whether they have been described or suspected to be transmitted through breast milk, covering various species. We also elaborate on the production and composition of breast milk and discuss potential entry sites of exogenous mammalian retroviruses during oral transmission.
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Affiliation(s)
- Laura M Kemeter
- Institute of Clinical and Molecular Virology, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - Alexandra Birzer
- Institute of Clinical and Molecular Virology, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - Stefanie Heym
- Institute of Clinical and Molecular Virology, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - Andrea K Thoma-Kress
- Institute of Clinical and Molecular Virology, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
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Dugardin J, Demar M, Hafsi N, Amroun H, Aurelus JM, Drak Alsibai K, Ntoutoum A, Santa F, Nacher M, Sabbah N. Human T-cell leukemia virus type 1 is associated with dysthyroidism in the French Amazon. Front Cell Infect Microbiol 2023; 13:1164526. [PMID: 37293205 PMCID: PMC10244722 DOI: 10.3389/fcimb.2023.1164526] [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: 02/12/2023] [Accepted: 05/05/2023] [Indexed: 06/10/2023] Open
Abstract
Background Human T-cell leukemia virus type 1 (HTLV-1) is a retrovirus known to cause two major diseases: adult T-cell leukemia/lymphoma and a progressive neuromyelopathy-tropical spastic paraparesis. Many viruses may be involved in the pathogenesis of thyroiditis; however, few studies have focused on the role of HTLV-1. We aimed to investigate the association between HTLV-1 and biological thyroid dysfunction. Methods We included 357 patients with a positive HTLV-1 serology and thyroid-stimulating hormone assay data between 2012 and 2021 in a hospital in French Guiana; we compared the prevalence of hypothyroidism and hyperthyroidism in this group with that in an HTLV-1-negative control group (722 persons) matched for sex and age. Results The prevalence of hypothyroidism and hyperthyroidism in patients with HTLV-1 infection was significantly higher than that in the control group (11% versus 3.2% and 11.3% versus 2.3%, respectively; p < 0.001). Conclusion Our study shows, for the first time, the association between HTLV-1 and dysthyroidism in a large sample, suggesting that thyroid function exploration should be systematically implemented in this population as this may have an impact on therapeutic management.
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Affiliation(s)
- Julia Dugardin
- Department of Endocrinology and Metabolic Diseases, Cayenne Hospital Center, Cayenne, French Guiana
| | - Magalie Demar
- Laboratory of Parasitology-Mycology (LHUPM), Cayenne Hospital Center, Cayenne, French Guiana
| | - Nezha Hafsi
- Department of Endocrinology and Metabolic Diseases, Cayenne Hospital Center, Cayenne, French Guiana
| | - Hakim Amroun
- Department of Surgery, Cayenne Hospital Center, Cayenne, French Guiana
| | - Jean-Markens Aurelus
- Department of Endocrinology and Metabolic Diseases, Cayenne Hospital Center, Cayenne, French Guiana
| | - Kinan Drak Alsibai
- Department of Pathology and Center of Biological Resources (CRB Amazonie), Cayenne Hospital Center, Cayenne, French Guiana
| | - André Ntoutoum
- Department of Endocrinology and Metabolic Diseases, Cayenne Hospital Center, Cayenne, French Guiana
| | - Florin Santa
- Department of Internal Diseases, Cayenne Hospital Center, Cayenne, French Guiana
| | - Mathieu Nacher
- Clinical Investigation Center Antilles French Guiana (CIC INSERM 1424), Cayenne Hospital Center, Cayenne, French Guiana
| | - Nadia Sabbah
- Department of Endocrinology and Metabolic Diseases, Cayenne Hospital Center, Cayenne, French Guiana
- Clinical Investigation Center Antilles French Guiana (CIC INSERM 1424), Cayenne Hospital Center, Cayenne, French Guiana
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Yonekura K, Tsuruta N, Miyagi T, Koike Y, Higashi Y, Nakahara T, Ohata C, Kaneko S, Yamaguchi M, Saito K, Yanase T, Imafuku S. Prevalence of human T-lymphotropic virus type I in patients with psoriasis and its effect on treatment choice: A multicenter observational study. J Dermatol Sci 2023:S0923-1811(23)00119-6. [PMID: 37236840 DOI: 10.1016/j.jdermsci.2023.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/29/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023]
Affiliation(s)
- Kentaro Yonekura
- Department of Dermatology, Imamura General Hospital, Kagoshima, Japan; Western Japan Inflammatory Skin Disease Research Group, Fukuoka, Japan.
| | - Noriko Tsuruta
- Western Japan Inflammatory Skin Disease Research Group, Fukuoka, Japan; Department of Dermatology, Fukuoka University Faculty of Medicine, Fukuoka, Japan
| | - Takuya Miyagi
- Western Japan Inflammatory Skin Disease Research Group, Fukuoka, Japan; Department of Dermatology, University of the Ryukyus, Graduate School of Medicine, Nishihara, Japan
| | - Yuta Koike
- Western Japan Inflammatory Skin Disease Research Group, Fukuoka, Japan; Department of Dermatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yuko Higashi
- Western Japan Inflammatory Skin Disease Research Group, Fukuoka, Japan; Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Takeshi Nakahara
- Western Japan Inflammatory Skin Disease Research Group, Fukuoka, Japan; Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Chika Ohata
- Western Japan Inflammatory Skin Disease Research Group, Fukuoka, Japan; Department of Dermatology, Kurume University School of Medicine, Kurume, Japan
| | - Sakae Kaneko
- Western Japan Inflammatory Skin Disease Research Group, Fukuoka, Japan; Department of Dermatology, Shimane University Faculty of Medicine, Izumo, Japan
| | - Michiya Yamaguchi
- Western Japan Inflammatory Skin Disease Research Group, Fukuoka, Japan; Department of Dermatology, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Kanami Saito
- Western Japan Inflammatory Skin Disease Research Group, Fukuoka, Japan; Department of Dermatology, Faculty of Medicine, Oita University, Yufu, Japan
| | - Tetsuji Yanase
- Western Japan Inflammatory Skin Disease Research Group, Fukuoka, Japan; Department of Dermatology, Hiroshima City North Medical Center Asa Citizens Hospital, Hiroshima, Japan
| | - Shinichi Imafuku
- Western Japan Inflammatory Skin Disease Research Group, Fukuoka, Japan; Department of Dermatology, Fukuoka University Faculty of Medicine, Fukuoka, Japan
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Hezave YA, Sharifi Z, Kermani FR. Analysis of Programmed Cell Death-1 (PD-1) Gene Variations (re11568821 and rs41386349) in HTLV-1 Infection Using One Primer Pair and Proviral Load. J Mol Evol 2023:10.1007/s00239-023-10104-5. [PMID: 37020064 DOI: 10.1007/s00239-023-10104-5] [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: 11/01/2022] [Accepted: 03/16/2023] [Indexed: 04/07/2023]
Abstract
About 90% of people infected with Human T lymphotropic virus type-1 (HTLV-1) virus are asymptomatic, so it can be said that the prevalence of this virus is not completely clear. During chronic infection, the expression of programmed cell death-1 (PD-1) protein increases and causes exhausted phenotype in T cells. Considering the role of host genetics and immune responses in HTLV-1 infection, in this case-control study, included 81 asymptomatic carriers (ACs) and 162 healthy controls (HCs), rs11568821 and rs41386349 polymorphisms of PD-1 gene were evaluated by Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method which investigated by one primer pair for both polymorphisms also, proviral load (PVL) measured by quantitative real-time PCR (Q-RT-PCR). The results showed that the mutant allele of rs11568821 (A) and rs41386349 (T) polymorphisms is associated with an increase in HTLV-1 infection significantly (p = 0.019 and p = 0.000 respectively). But there was no significant relationship between PVL and polymorphisms.
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Affiliation(s)
- Yalda Amiri Hezave
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, P.O. Box: 14665-1157, Iran
| | - Zohreh Sharifi
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, P.O. Box: 14665-1157, Iran.
| | - Fahime Ranjbar Kermani
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, P.O. Box: 14665-1157, Iran
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Lee SY, Miller KM, Kim JJ. Clinical and Mechanistic Implications of R-Loops in Human Leukemias. Int J Mol Sci 2023; 24:ijms24065966. [PMID: 36983041 PMCID: PMC10052022 DOI: 10.3390/ijms24065966] [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: 03/04/2023] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
Genetic mutations or environmental agents are major contributors to leukemia and are associated with genomic instability. R-loops are three-stranded nucleic acid structures consisting of an RNA-DNA hybrid and a non-template single-stranded DNA. These structures regulate various cellular processes, including transcription, replication, and DSB repair. However, unregulated R-loop formation can cause DNA damage and genomic instability, which are potential drivers of cancer including leukemia. In this review, we discuss the current understanding of aberrant R-loop formation and how it influences genomic instability and leukemia development. We also consider the possibility of R-loops as therapeutic targets for cancer treatment.
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Affiliation(s)
- Seo-Yun Lee
- Department of Life Science and Multidisciplinary, Genome Institute, Hallym University, Chuncheon 24252, Republic of Korea
| | - Kyle M Miller
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX 78712, USA
| | - Jae-Jin Kim
- Department of Life Science and Multidisciplinary, Genome Institute, Hallym University, Chuncheon 24252, Republic of Korea
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Langlois M, Bounou S, Tremblay MJ, Barbeau B. Infection of the Ex Vivo Tonsil Model by HTLV-1 Envelope-Pseudotyped Viruses. Pathogens 2023; 12:pathogens12020182. [PMID: 36839454 PMCID: PMC9958901 DOI: 10.3390/pathogens12020182] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/19/2023] [Accepted: 01/20/2023] [Indexed: 01/26/2023] Open
Abstract
Human T-cell leukemia virus type 1 (HTLV-1) is the causal agent of adult T-cell leukemia/lymphoma and HTLV-1-associated myelopathy/tropical spastic paraparesis. Its tropism is known to be broad in cultured cell lines, while in vivo data support a more selective transmission toward CD4+ T cells and the limited targeting of other hematopoietic cell types. An essential condition for HTLV-1 infection is cell-to-cell contact, to which both virological synapse and viral biofilm have been suggested to strongly contribute. As cell lines and animal models each present their own limitations in studying HTLV-1 replication, we have explored the use of an ex vivo model based on the secondary lymphoid tonsillar tissue. HIV-1 luciferase-expressing pseudotyped viruses bearing the HTLV-1 envelope protein at their surface were first shown to recapitulate the wide spectrum of infectivity of HTLV-1 toward various cell lines. Tonsil fragments were next exposed to pseudotyped viruses and shown to be reproducibly infected. Infection by HTLV-1 Env-pseudotyped viruses was blocked by different anti-gp46 antibodies, unlike infection by HIV-1 virions. The dose-dependent infection revealed a gradual increase in luciferase activity, which was again sensitive to anti-gp46 antibodies. Overall, these results suggest that the ex vivo tonsil model represents a reliable alternative for studying HTLV-1 replication and potentially viral latency, as well as early clonal formation.
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Affiliation(s)
- Mélanie Langlois
- Axe des Maladies Infectieuses et Immunitaires, Centre de Recherche du Centre Hospitalier, Universitaire de Québec-Université Laval, Québec, QC G1V 4G2, Canada
| | - Salim Bounou
- Axe des Maladies Infectieuses et Immunitaires, Centre de Recherche du Centre Hospitalier, Universitaire de Québec-Université Laval, Québec, QC G1V 4G2, Canada
- Euromed Research Center, Faculty of Pharmacy, Université EUROMED de Fès, Fez 30000, Morocco
| | - Michel J. Tremblay
- Axe des Maladies Infectieuses et Immunitaires, Centre de Recherche du Centre Hospitalier, Universitaire de Québec-Université Laval, Québec, QC G1V 4G2, Canada
- Département de Microbiologie-Infectiologie et Immunologie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Benoit Barbeau
- Département de Sciences Biologiques, Université du Québec à Montréal, Montréal, QC H3C 3P8, Canada
- Réseau Intersectoriel de Recherche en Santé de l’Université du Québec (RISUQ), Montréal, QC H2X 1E3, Canada
- Correspondence: ; Tel.: +1-514-987-3000 (ext. 4576)
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Santana CS, Andrade FDO, da Silva GCS, Nascimento JODS, Campos RF, Giovanetti M, Santos LA, Gois LL, Alcantara LCJ, Barreto FK. Advances in preventive vaccine development against HTLV-1 infection: A systematic review of the last 35 years. Front Immunol 2023; 14:1073779. [PMID: 36860854 PMCID: PMC9968880 DOI: 10.3389/fimmu.2023.1073779] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 01/25/2023] [Indexed: 02/15/2023] Open
Abstract
Introduction The Human T-lymphotropic virus type 1 (HTLV-1) was the first described human retrovirus. It is currently estimated that around 5 to 10 million people worldwide are infected with this virus. Despite its high prevalence, there is still no preventive vaccine against the HTLV-1 infection. It is known that vaccine development and large-scale immunization play an important role in global public health. To understand the advances in this field we performed a systematic review regarding the current progress in the development of a preventive vaccine against the HTLV-1 infection. Methods This review followed the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA®) guidelines and was registered at the International Prospective Register of Systematic Reviews (PROSPERO). The search for articles was performed in PubMed, Lilacs, Embase and SciELO databases. From the 2,485 articles identified, 25 were selected according to the inclusion and exclusion criteria. Results The analysis of these articles indicated that potential vaccine designs in development are available, although there is still a paucity of studies in the human clinical trial phase. Discussion Although HTLV-1 was discovered almost 40 years ago, it remains a great challenge and a worldwide neglected threat. The scarcity of funding contributes decisively to the inconclusiveness of the vaccine development. The data summarized here intends to highlight the necessity to improve the current knowledge of this neglected retrovirus, encouraging for more studies on vaccine development aiming the to eliminate this human threat. Systematic review registration https://www.crd.york.ac.uk/prospero, identifier (CRD42021270412).
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Affiliation(s)
- Carolina Souza Santana
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista, Brazil
| | | | | | | | - Raissa Frazão Campos
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista, Brazil
| | - Marta Giovanetti
- Laboratório de Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou - Fiocruz, Belo Horizonte, Minas Gerais, Brazil.,Department of Science and Technology for Humans and the Environment, University of Campus Bio-Medico di Roma, Rome, Italy
| | - Luciane Amorim Santos
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil.,Escola Bahiana de Medicina e Saúde Pública, Salvador, Brazil
| | - Luana Leandro Gois
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil.,Departamento de Ciências da Biointeração, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
| | - Luiz Carlos Júnior Alcantara
- Laboratório de Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou - Fiocruz, Belo Horizonte, Minas Gerais, Brazil
| | - Fernanda Khouri Barreto
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista, Brazil
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11
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Ottmann M. [These viruses that inhabit and visit us: The human virome]. Med Sci (Paris) 2022; 38:1028-1038. [PMID: 36692282 DOI: 10.1051/medsci/2022161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Recent advances in new sequencing technologies have opened the way to the deciphering of human virome. So far, human virome is defined as the complete list of viruses found in human body. Those viruses could be endogenous, prokaryotic, archaeal and eukaryotic. In addition, each compartment of the human body constitutes a different microenvironment with its own virome. Viral infections can be categorized according to the outcome of the acute phase and until recently, only symptomatic and pathological infections were studied. It is now well established that a healthy person has an extremely diverse virome. This review summarizes the current state of our knowledge and also proposes another classification of the human virome based on principles of ecology.
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Affiliation(s)
- Michèle Ottmann
- Centre international de recherche en infectiologie (CIRI), université Claude Bernard-Lyon 1, université de Lyon, Inserm U1111 - CNRS UMR 5308 - ENS, Laboratoire de virologie et pathologies humaines, Faculté de médecine RTH Laennec, 7 rue Guillaume Paradin, 69372 Lyon cedex 08, France
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12
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White MC, Wu X, Damania B. Oncogenic viruses, cancer biology, and innate immunity. Curr Opin Immunol 2022; 78:102253. [PMID: 36240666 DOI: 10.1016/j.coi.2022.102253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 09/05/2022] [Indexed: 01/29/2023]
Abstract
Malignancies that arise as a result of viral infection account for roughly 15% of cancer cases worldwide. The innate immune system is the body's first line of defense against oncogenic viral infection and is also involved in the response against viral-driven tumors. In this review, we discuss research advances made over the last five years elucidating how the innate immune system recognizes and responds to oncogenic viruses, how these viruses have evolved to escape this immune pressure, and ways that innate immunity can inform the development of novel therapeutics against oncogenic viral infection and their associated cancers.
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Affiliation(s)
- Maria C White
- Lineberger Comprehensive Cancer Center, the University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Microbiology and Immunology, the University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Xinjun Wu
- Lineberger Comprehensive Cancer Center, the University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Microbiology and Immunology, the University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Blossom Damania
- Lineberger Comprehensive Cancer Center, the University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Microbiology and Immunology, the University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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Tanaka Y, Tanaka R, Imaizumi N, Mizuguchi M, Takahashi Y, Hayashi M, Miyagi T, Uchihara J, Ohshiro K, Masuzaki H, Fukushima T. A protective role of HTLV-1 gp46-specific neutralizing and antibody-dependent cellular cytotoxicity-inducing antibodies in progression to adult T-cell leukemia (ATL). Front Immunol 2022; 13:921606. [PMID: 36177005 PMCID: PMC9513378 DOI: 10.3389/fimmu.2022.921606] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 08/24/2022] [Indexed: 11/13/2022] Open
Abstract
Human T-cell leukemia virus type-1 (HTLV-1) establishes a long-term persistent infection in humans and causes malignant T-cell leukemia, adult T-cell leukemia (ATL). HTLV-1-specific cytotoxic T lymphocytes have been suggested to play a major role in the immunosurveillance of HTLV-1-infected T cells. However, it remains unclear whether HTLV-1-specific functional antibodies are also involved in the host defense. To explore the role of antibodies in the course of HTLV-1 infection, we quantitated HTLV-1-specific neutralizing and antibody-dependent cellular cytotoxicity (ADCC)-inducing antibody levels in plasma from asymptomatic carriers (ACs) and ATL patients. The levels of neutralizing antibodies, as determined by a syncytium inhibition assay, were significantly lower in acute and chronic ATL patients than in ACs. The levels of ADCC-inducing activity were tested using an autologous pair of HTLV-1-producing cells and cultured natural killer (NK) cells, which showed that the ADCC-inducing activity of IgG at a concentration of 100 µg/ml was comparable between ACs and acute ATL patients. The anti-gp46 antibody IgG levels, determined by ELISA, correlated with those of the neutralizing and ADCC-inducing antibodies. In contrast, the proviral loads did not correlate with any of these antibody levels. NK cells and a monoclonal anti-gp46 antibody reduced the number of HTLV-1 Tax-expressing cells in cultured peripheral blood mononuclear cells from patients with aggressive ATL. These results suggest a protective role for HTLV-1 neutralizing and ADCC-inducing antibodies during the course of HTLV-1 infection.
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Affiliation(s)
- Yuetsu Tanaka
- Laboratory of Hemato-Immunology, Graduate School of Health Sciences, University of the Ryukyus, Nishihara, Japan
- *Correspondence: Yuetsu Tanaka,
| | - Reiko Tanaka
- Laboratory of Hemato-Immunology, Graduate School of Health Sciences, University of the Ryukyus, Nishihara, Japan
| | - Naoki Imaizumi
- Laboratory of Clinical Physiology, Graduate School of Health Sciences, University of the Ryukyus, Nishihara, Japan
| | - Mariko Mizuguchi
- Department of Investigative Medicine, Graduate School of Medicine, University of the Ryukyus, Nishihara, Japan
| | - Yoshiaki Takahashi
- Department of Investigative Medicine, Graduate School of Medicine, University of the Ryukyus, Nishihara, Japan
| | - Masaki Hayashi
- Department of Hematology, Nakagami Hospital, Okinawa, Japan
| | - Takashi Miyagi
- Department of Hematology, Heart Life Hospital, Nishihara, Japan
| | | | - Kazuiku Ohshiro
- Department of Hematology, Okinawa Prefectural Nambu Medical Center and Children’s Medical Center, Minami-Haebaru, Japan
| | - Hiroaki Masuzaki
- Division of Endocrinology, Diabetes, and Metabolism, Hematology, Rheumatology (Second Department of Internal Medicine), Graduate School of Medicine, University of the Ryukyus, Nishihara, Japan
| | - Takuya Fukushima
- Laboratory of Hemato-Immunology, Graduate School of Health Sciences, University of the Ryukyus, Nishihara, Japan
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Shallak M, Alberio T, Fasano M, Monti M, Iacobucci I, Ladet J, Mortreux F, Accolla RS, Forlani G. The endogenous HBZ interactome in ATL leukemic cells reveals an unprecedented complexity of host interacting partners involved in RNA splicing. Front Immunol 2022; 13:939863. [PMID: 35979358 PMCID: PMC9376625 DOI: 10.3389/fimmu.2022.939863] [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: 05/09/2022] [Accepted: 07/07/2022] [Indexed: 11/13/2022] Open
Abstract
Adult T-cell leukemia/lymphoma (ATL) is a T-cell lymphoproliferative neoplasm caused by the human T-cell leukemia virus type 1 (HTLV-1). Two viral proteins, Tax-1 and HBZ play important roles in HTLV-1 infectivity and in HTLV-1-associated pathologies by altering key pathways of cell homeostasis. However, the molecular mechanisms through which the two viral proteins, particularly HBZ, induce and/or sustain the oncogenic process are still largely elusive. Previous results suggested that HBZ interaction with nuclear factors may alter cell cycle and cell proliferation. To have a more complete picture of the HBZ interactions, we investigated in detail the endogenous HBZ interactome in leukemic cells by immunoprecipitating the HBZ-interacting complexes of ATL-2 leukemic cells, followed by tandem mass spectrometry analyses. RNA seq analysis was performed to decipher the differential gene expression and splicing modifications related to HTLV-1. Here we compared ATL-2 with MOLT-4, a non HTLV-1 derived leukemic T cell line and further compared with HBZ-induced modifications in an isogenic system composed by Jurkat T cells and stably HBZ transfected Jurkat derivatives. The endogenous HBZ interactome of ATL-2 cells identified 249 interactors covering three main clusters corresponding to protein families mainly involved in mRNA splicing, nonsense-mediated RNA decay (NMD) and JAK-STAT signaling pathway. Here we analyzed in detail the cluster involved in RNA splicing. RNAseq analysis showed that HBZ specifically altered the transcription of many genes, including crucial oncogenes, by affecting different splicing events. Consistently, the two RNA helicases, members of the RNA splicing family, DDX5 and its paralog DDX17, recently shown to be involved in alternative splicing of cellular genes after NF-κB activation by HTLV-1 Tax-1, interacted and partially co-localized with HBZ. For the first time, a complete picture of the endogenous HBZ interactome was elucidated. The wide interaction of HBZ with molecules involved in RNA splicing and the subsequent transcriptome alteration strongly suggests an unprecedented complex role of the viral oncogene in the establishment of the leukemic state.
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Affiliation(s)
- Mariam Shallak
- Laboratories of General Pathology and Immunology “Giovanna Tosi”, Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Tiziana Alberio
- Laboratory of Biochemistry and Functional Proteomics, Department of Science and High Technology, University of Insubria, Busto Arsizio, Italy
| | - Mauro Fasano
- Laboratory of Biochemistry and Functional Proteomics, Department of Science and High Technology, University of Insubria, Busto Arsizio, Italy
| | - Maria Monti
- Department of Chemical Sciences, University Federico II of Naples, Naples, Italy
- CEINGE Advanced Biotechnologies, Naples, Italy
| | - Ilaria Iacobucci
- Department of Chemical Sciences, University Federico II of Naples, Naples, Italy
- CEINGE Advanced Biotechnologies, Naples, Italy
| | - Julien Ladet
- Laboratory of Biology and Modeling of the Cell, CNRS UMR 5239, INSERM U1210, University of Lyon, Lyon, France
| | - Franck Mortreux
- Laboratory of Biology and Modeling of the Cell, CNRS UMR 5239, INSERM U1210, University of Lyon, Lyon, France
- *Correspondence: Franck Mortreux, ; Roberto S. Accolla, ; Greta Forlani,
| | - Roberto S. Accolla
- Laboratories of General Pathology and Immunology “Giovanna Tosi”, Department of Medicine and Surgery, University of Insubria, Varese, Italy
- *Correspondence: Franck Mortreux, ; Roberto S. Accolla, ; Greta Forlani,
| | - Greta Forlani
- Laboratories of General Pathology and Immunology “Giovanna Tosi”, Department of Medicine and Surgery, University of Insubria, Varese, Italy
- *Correspondence: Franck Mortreux, ; Roberto S. Accolla, ; Greta Forlani,
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A Panel of Eight miRNAs Is Deregulated in HTLV-2 Infected PBMCs and BJABGu Cell Line. Int J Mol Sci 2022; 23:ijms23147583. [PMID: 35886938 PMCID: PMC9320395 DOI: 10.3390/ijms23147583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/05/2022] [Accepted: 07/06/2022] [Indexed: 02/05/2023] Open
Abstract
Despite human T-cell leukemia virus type 1 (HTLV-1) and HTLV-2 being retroviruses closely related at a genomic level, HTLV-2 differs from HTLV-1 in terms of pathogenicity in both single infection and coinfection contexts. Moreover, the HTLV-2 association with clinical outcomes is still debated and several mechanisms underlying HTLV-2 infection remain unexplored as well. Cellular miRNAs are key factors in the post-transcriptional regulation of gene expression and they are known to be potential targets for several pathogens to control the host microenvironment and, in particular, escape immune responses. Here, we identified a HTLV-2-related signature of eight miRNAs (miR-125a-3p, miR-381-3p, miR-502-5p, miR-708-5p, miR-548d-5p, miR-548c-5p, miR-1-3p, and miR-511-5p) in both HTLV-2 infected PBMC and BJABGu cell lines. Altered miRNA expression patterns were correlated with the impairment of Th cell differentiation and signaling pathways driven by cytokines and transcriptional factors such as the Runt-related transcription factor (RUNX) family members. Specifically, we demonstrated that the RUNX2 protein was significantly more expressed in the presence of Tax-2 compared with Tax-1 in an in vitro cell model. To the best of our knowledge, these data represent the first contribution to elucidating the HTLV-2 mediated alteration of host cell miRNA profiles that may impact on HTLV-2 replication and persistent infection.
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Machado CB, da Cunha LS, Maués JHDS, Pessoa FMCDP, de Oliveira MB, Ribeiro RM, Lopes GS, de Moraes Filho MO, de Moraes MEA, Khayat AS, Moreira-Nunes CA. Role of miRNAs in Human T Cell Leukemia Virus Type 1 Induced T Cell Leukemia: A Literature Review and Bioinformatics Approach. Int J Mol Sci 2022; 23:ijms23105486. [PMID: 35628297 PMCID: PMC9141946 DOI: 10.3390/ijms23105486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 05/10/2022] [Accepted: 05/11/2022] [Indexed: 02/06/2023] Open
Abstract
Human T cell leukemia virus type 1 (HTLV-1) was identified as the first pathogenic human retrovirus and is estimated to infect 5 to 10 million individuals worldwide. Unlike other retroviruses, there is no effective therapy to prevent the onset of the most alarming diseases caused by HTLV-1, and the more severe cases manifest as the malignant phenotype of adult T cell leukemia (ATL). MicroRNA (miRNA) dysfunction is a common feature of leukemogenesis, and it is no different in ATL cases. Therefore, we sought to analyze studies that reported deregulated miRNA expression in HTLV-1 infected cells and patients’ samples to understand how this deregulation could induce malignancy. Through in silico analysis, we identified 12 miRNAs that stood out in the prediction of targets, and we performed functional annotation of the genes linked to these 12 miRNAs that appeared to have a major biological interaction. A total of 90 genes were enriched in 14 KEGG pathways with significant values, including TP53, WNT, MAPK, TGF-β, and Ras signaling pathways. These miRNAs and gene interactions are discussed in further detail for elucidation of how they may act as probable drivers for ATL onset, and while our data provide solid starting points for comprehension of miRNAs’ roles in HTLV-1 infection, continuous effort in oncologic research is still needed to improve our understanding of HTLV-1 induced leukemia.
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Affiliation(s)
- Caio Bezerra Machado
- Department of Medicine, Pharmacogenetics Laboratory, Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza 60430-275, CE, Brazil; (C.B.M.); (F.M.C.d.P.P.); (M.O.d.M.F.); (M.E.A.d.M.)
| | | | | | - Flávia Melo Cunha de Pinho Pessoa
- Department of Medicine, Pharmacogenetics Laboratory, Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza 60430-275, CE, Brazil; (C.B.M.); (F.M.C.d.P.P.); (M.O.d.M.F.); (M.E.A.d.M.)
| | - Marcelo Braga de Oliveira
- Department of Biological Sciences, Oncology Research Center, Federal University of Pará, Belém 66073-005, PA, Brazil; (M.B.d.O.); (A.S.K.)
| | | | - Germison Silva Lopes
- Department of Hematology, César Cals General Hospital, Fortaleza 60015-152, CE, Brazil;
| | - Manoel Odorico de Moraes Filho
- Department of Medicine, Pharmacogenetics Laboratory, Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza 60430-275, CE, Brazil; (C.B.M.); (F.M.C.d.P.P.); (M.O.d.M.F.); (M.E.A.d.M.)
| | - Maria Elisabete Amaral de Moraes
- Department of Medicine, Pharmacogenetics Laboratory, Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza 60430-275, CE, Brazil; (C.B.M.); (F.M.C.d.P.P.); (M.O.d.M.F.); (M.E.A.d.M.)
| | - André Salim Khayat
- Department of Biological Sciences, Oncology Research Center, Federal University of Pará, Belém 66073-005, PA, Brazil; (M.B.d.O.); (A.S.K.)
| | - Caroline Aquino Moreira-Nunes
- Department of Medicine, Pharmacogenetics Laboratory, Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza 60430-275, CE, Brazil; (C.B.M.); (F.M.C.d.P.P.); (M.O.d.M.F.); (M.E.A.d.M.)
- Unichristus University Center, Faculty of Biomedicine, Fortaleza 60430-275, CE, Brazil;
- Department of Biological Sciences, Oncology Research Center, Federal University of Pará, Belém 66073-005, PA, Brazil; (M.B.d.O.); (A.S.K.)
- Department of Health Sciences, Northeast Biotechnology Network (RENORBIO), Itaperi Campus, Ceará State University, Fortaleza 60740-903, CE, Brazil
- Correspondence:
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Gallo RC, Tagaya Y. Reflections on Some of the Exceptional Features of HTLV-1 and HTLV-1 Research: A Perspective. Front Immunol 2022; 13:859654. [PMID: 35432297 PMCID: PMC9010860 DOI: 10.3389/fimmu.2022.859654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 02/28/2022] [Indexed: 11/22/2022] Open
Abstract
The report is not a review or a summary. In a manner, it is a perspective but an unusual one. It looks back to the years my colleagues and I (RG) began preparing for human retroviruses (beginning in 1970), how they evolved, and attempts to bring to light or simply to emphasize many exceptional characteristics of a retrovirus known as HTLV-1 and some fortuitous coincidences, with emphasis on the needs of the field. These events cover over one half a century. We have had many reviews on HTLV-1 disease, epidemiology, and basic aspects of its replication, genome, gene functions, structure, and pathogenesis, though continued updates are needed. However, some of its truly exceptional features have not been highlighted, or at least not in a comprehensive manner. This article attempts to do so.
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Affiliation(s)
- Robert C. Gallo
- Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, United States
- *Correspondence: Robert C. Gallo,
| | - Yutaka Tagaya
- Cell Biology Lab, Division of Virology, Pathogenesis and Cancer, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, United States
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Maksimova V, Panfil AR. Human T-Cell Leukemia Virus Type 1 Envelope Protein: Post-Entry Roles in Viral Pathogenesis. Viruses 2022; 14:v14010138. [PMID: 35062342 PMCID: PMC8778545 DOI: 10.3390/v14010138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/09/2022] [Accepted: 01/11/2022] [Indexed: 11/16/2022] Open
Abstract
Human T-cell leukemia virus type 1 (HTLV-1) is an oncogenic retrovirus that is the causative infectious agent of adult T-cell leukemia/lymphoma (ATL), an aggressive and fatal CD4+ T-cell malignancy, and HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP), a chronic neurological disease. Disease progression in infected individuals is the result of HTLV-1-driven clonal expansion of CD4+ T-cells and is generally associated with the activities of the viral oncoproteins Tax and Hbz. A closely related virus, HTLV-2, exhibits similar genomic features and the capacity to transform T-cells, but is non-pathogenic. In vitro, HTLV-1 primarily immortalizes or transforms CD4+ T-cells, while HTLV-2 displays a transformation tropism for CD8+ T-cells. This distinct tropism is recapitulated in infected people. Through comparative studies, the genetic determinant for this divergent tropism of HTLV-1/2 has been mapped to the viral envelope (Env). In this review, we explore the emerging roles for Env beyond initial viral entry and examine current perspectives on its contributions to HTLV-1-mediated disease development.
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Affiliation(s)
- Victoria Maksimova
- Biomedical Sciences Graduate Program, Center for Retrovirus Research, Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210, USA;
| | - Amanda R. Panfil
- Center for Retrovirus Research, Comprehensive Cancer Center and Solove Research Institute, Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210, USA
- Correspondence:
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