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http://dx.doi.org/10.1016/0140-6736(90)92542-p | DOI Listing |
Front Immunol
December 2024
Laboratory of Virology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil.
Virol J
December 2024
Department of Microbiology, Kawasaki Medical School, Kurashiki, Okayama, Japan.
Background: Human T-cell leukemia virus type 1 (HTLV-1) is an oncogenic virus that causes malignant adult T-cell leukemia/lymphoma (ATL). Patients infected with HTLV-1 are considered HTLV-1 carriers, and a small proportion of patients progress to life-threatening ATL after a long asymptomatic phase. No antiviral agent or preventive vaccine specific for HTLV-1 infection is established in current situation.
View Article and Find Full Text PDFJ Extracell Vesicles
October 2024
Division of Bone & Mineral Diseases, Musculoskeletal Research Center, Washington University School of Medicine, Saint Louis, Missouri, USA.
Adult T cell leukaemia (ATL), caused by infection with human T- lymphotropic virus type 1 (HTLV-1), is often complicated by hypercalcemia and osteolytic lesions. Therefore, we studied the communication between patient-derived ATL cells (ATL-PDX) and HTLV-1 immortalized CD4+ T cell lines (HTLV/T) with osteoclasts and their effects on bone mass in mice. Intratibial inoculation of some HTLV/T leads to a profound local decrease in bone mass similar to marrow-replacing ATL-PDX, despite the fact that few HTLV/T cells persisted in the bone.
View Article and Find Full Text PDFViruses
September 2024
Department of Microbiology & Immunology, Drexel University College of Medicine, Philadelphia, PA 19129, USA.
HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP) is a progressive demyelinating disease of the spinal cord due to chronic inflammation. Hallmarks of disease pathology include dysfunctional anti-viral responses and the infiltration of HTLV-1-infected CD4+ T cells and HTLV-1-specific CD8+ T cells in the central nervous system. HAM/TSP individuals exhibit CD4+ and CD8+ T cells with elevated co-expression of multiple inhibitory immune checkpoint proteins (ICPs), but ICP blockade strategies can only partially restore CD8+ T-cell effector function.
View Article and Find Full Text PDFEur J Haematol
December 2024
Department of Microbiology and Oncology, Graduate School of Medicine, University of the Ryukyus, Nishihara, Japan.
Objectives: The role of glycogen synthase kinase (GSK)-3β in adult T-cell leukemia (ATL) caused by human T-cell leukemia virus type 1 (HTLV-1) is paradoxical and enigmatic. Here, we investigated the role of GSK-3β and its potential as a therapeutic target for ATL.
Methods: Cell proliferation/survival, cell cycle, apoptosis, and reactive oxygen species (ROS) generation were examined using the WST-8 assay, flow cytometry, and Hoechst 33342 staining, respectively.
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