In the past several decades, our understanding of how B cells are generated and what function they perform has continued to advance. It is widely accepted that B-cell subsets play a critical role in mediating immune response. Surprisingly, human and murine malarial infections cause major alterations in the composition of B-cell subsets in both the spleen and periphery. Multiple B-cell subsets are well characterized in murine models following primary and secondary infection, although in human malarial infection, these subsets are not well defined. Furthermore, a rare known function of B cells includes the potential role of regulating the activities of other cells in the body as regulatory cells. infection strongly alters the frequency of these regulatory B cells indicating the immunoregulatory function of B cells in malarial. It is important to note that these subsets, taken together, form the cellular basis of humoral immune responses, allowing protection against a wide array of antigens to be achieved. However, it remains a challenge and an important area of investigation to understand how these B-cell subsets work together to provide protection against infection.
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http://dx.doi.org/10.3389/fmicb.2023.1046002 | DOI Listing |
J Immunol
March 2025
Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA, United States.
Antigen-experienced memory B-cells (MBC) are endowed with enhanced functional properties compared to naïve B cells and play an important role in the humoral response. However, the epigenetic enzymes and programs that govern their rapid differentiation are incompletely understood. Here, the role of the histone H3 lysine 27 methyltransferase EZH2 in the formation of MBC in response to an influenza infection was determined in Mus musculus.
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February 2025
Department of Pathology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States.
The humoral immune system influences the development of atherosclerosis, but the contributions of specific memory B cell subsets and IgG isotypes are poorly understood. We assessed the relationship between atherosclerosis and age-associated B cells (ABCs), a T-bet-expressing memory B cell subset that is enriched for IgG2c production and implicated in humoral autoimmunity. We found increased numbers of splenic CD11c+ ABCs in 6-mo-old, chow-fed Apoe-/- mice versus C57BL/6 control mice, which were exacerbated by high-fat diet.
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March 2025
Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, No. 22, Jinjing Road, Xiqing District, Tianjin, 300392, People's Republic of China.
Avian infectious bronchitis (IB) is one of the major respiratory diseases in poultry. At present, attenuated vaccines are the main commercial vaccines, but they have many defects. We aimed to construct a novel multi-epitope DNA vaccine based on avian infectious bronchitis virus (IBV) S1 and N proteins for the prevention of IBV infection.
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March 2025
Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; NIHR Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK. Electronic address:
Aberrant B-cell function, which could arise from various underlying causes, is central to the pathogenesis of diverse autoimmune rheumatic diseases. B cells remain the only cell type to be specifically therapeutically targeted through depletion and have the only therapy with a routinely available flow cytometric biomarker of treatment. Since first use and subsequent licensing for rheumatoid arthritis, rituximab has had a transformative impact on patients globally and across the rheumatic diseases.
View Article and Find Full Text PDFMol Ther
March 2025
Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104; Raymond G. Perelman Center for Cellular and Molecular Therapy, Children's Hospital of Philadelphia, Philadelphia, PA 19104; Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, PA 19104. Electronic address:
Neutralizing antibodies (NAb) against adeno-associated virus (AAV) represent a significant obstacle to the efficacy of systemic recombinant AAV vector administration or re-administration. While there are some promising preclinical immunomodulation strategies in development, insights into which B cell subsets and compartments maintain persistent AAV NAb may define the optimal eradication strategy. Given the limited success of CD20-directed monotherapy in previous studies, we hypothesized that CD19-directed approaches that extend targeting into the plasma cell compartments may improve AAV NAb eradication.
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