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B-cell activating factor (BAFF) is a major cytokine that regulates B-cell survival, maturation and differentiation through its binding with its receptors: BAFF receptor (BAFF-R), transmembrane activator and cyclophilin ligand interactor (TACI) and B-cell maturation antigen (BCMA). These receptors have been demonstrated to be involved in tertiary lymphoid structure formation; however, their role in germinal centers (GCs) has remained elusive. The aim of the present study was to determine the expression profiles of BAFF and its receptors in secondary lymphoid tissues. Tonsils resected due to chronic tonsillitis were used as lymphoid tissues. To confirm the presence of GCs identified based on their typical structure, CD21 antibody staining was employed. The expression of BAFF, BAFF-R, TACI and BCMA was assessed by immunohistochemistry. BAFF was highly expressed in all regions of the follicle, but the highest BAFF expression was detected in the mantle zone (MZ). A high expression of BAFF-R was observed on lymphocytes in the MZ in comparison with the other regions (~80%; P<0.05), which was co-localizated with BAFF (r=0.646; P<0.001), in the MZ. TACI and BCMA exhibited similar expression among the different zones of the GCs, and co-localization with BAFF was observed inside the follicle, mainly in the dark zone. The present results indicate that BAFF is implicated in the maintenance of GCs. BAFF-R overexpression in the MZ, co-localizated with BAFF, suggests that these proteins constitute the principal pathway for the maintenance of the naïve B-cell population. Furthermore, TACI and BCMA have a role in the GC, where processes of B-cell selection, proliferation and differentiation into immunoglobulin-secreting plasma cells occur.
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http://dx.doi.org/10.3892/etm.2019.7172 | DOI Listing |
Front Immunol
December 2024
Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China.
Mutations in the recombination-activating gene 1, a pivotal component essential for V(D)J recombination and the formation of T- and B-cell receptors, can result in autoimmune hemolytic anemia, a rare hematological condition characterized by the autoantibody-mediated destruction of red blood cells. Herein, we report the case of a 1-year-and-4-month-old girl who presented with progressively aggravated anemia, fever, and cough. Autoimmune hemolytic anemia was confirmed by bone marrow aspiration and Coombs test.
View Article and Find Full Text PDFClin Transl Immunology
December 2024
Wyze Biotech Co. Ltd Zhongshan Guangdong China.
Objectives: To evaluate the manufacturability, efficacy and safety of allogeneic CD19 chimeric antigen receptor double-negative T cells (CD19-CAR-DNTs) as an off-the-shelf therapeutic cell product.
Methods: A membrane proteome array was used to assess the off-target binding of CD19-CAR. DNTs derived from healthy donors were transduced with lentiviral vectors encoding the CD19-CAR.
BMJ Neurol Open
December 2024
Department of Neurology, Yale School of Medicine, New Haven, Connecticut, USA.
Introduction: Myasthenia gravis (MG) is a T cell-dependent B cell-mediated autoimmune disease with pathogenic antibodies directed against components of the acetylcholine receptor (AChR). Current therapies do not address the root cause of the disease (autoimmune recognition of AChR) and are associated with possible serious side effects. Therefore, new therapeutic options targeting antigen-specific autoimmunity are needed.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China. Electronic address:
Excessive molybdenum (Mo) and cadmium (Cd) are environmental pollutants with serious nephrotoxicity. B-cell lymphoma 2 (Bcl-2) plays a critical role in modulating mitochondrial ROS (Mito-ROS). Ferroptosis is a form of cell death dependent on lipid peroxidation.
View Article and Find Full Text PDFInt J Hematol
December 2024
Oncology, GSK, Upper Providence, PA, USA.
DREAMM-11 (NCT03828292) was a Phase 1, open-label, dose-escalation study of belantamab mafodotin in Japanese patients with relapsed/refractory multiple myeloma (RRMM). In Part 1, belantamab mafodotin monotherapy (2.5 or 3.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!