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      Is Open Access

      The spleen: “epicenter” in malaria infection and immunity

      review-article
      1 , 2 ,
      Journal of Leukocyte Biology
      John Wiley and Sons Inc.
      T cells, B cells, Ab, cytokines, inflammation

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          Abstract

          The spleen is a complex secondary lymphoid organ that plays a crucial role in controlling blood‐stage infection with Plasmodium parasites. It is tasked with sensing and removing parasitized RBCs, erythropoiesis, the activation and differentiation of adaptive immune cells, and the development of protective immunity, all in the face of an intense inflammatory environment. This paper describes how these processes are regulated following infection and recognizes the gaps in our current knowledge, highlighting recent insights from human infections and mouse models.

          Graphical Abstract

          Reviews the spleen's function during malaria infection; shows how this organ serves as a central hub for activating and exerting effector mechanisms within the immune response to control blood‐stage infection with Plasmodium parasites.

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          Most cited references193

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          Molecular and cellular insights into T cell exhaustion.

          In chronic infections and cancer, T cells are exposed to persistent antigen and/or inflammatory signals. This scenario is often associated with the deterioration of T cell function: a state called 'exhaustion'. Exhausted T cells lose robust effector functions, express multiple inhibitory receptors and are defined by an altered transcriptional programme. T cell exhaustion is often associated with inefficient control of persisting infections and tumours, but revitalization of exhausted T cells can reinvigorate immunity. Here, we review recent advances that provide a clearer molecular understanding of T cell exhaustion and reveal new therapeutic targets for persisting infections and cancer.
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            Gamma-globulin and acquired immunity to human malaria.

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              The generation of antibody-secreting plasma cells.

              The regulation of antibody production is linked to the generation and maintenance of plasmablasts and plasma cells from their B cell precursors. Plasmablasts are the rapidly produced and short-lived effector cells of the early antibody response, whereas plasma cells are the long-lived mediators of lasting humoral immunity. An extraordinary number of control mechanisms, at both the cellular and molecular levels, underlie the regulation of this essential arm of the immune response. Despite this complexity, the terminal differentiation of B cells can be described as a simple probabilistic process that is governed by a central gene-regulatory network and modified by environmental stimuli.
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                Author and article information

                Contributors
                jstumhofer@uams.edu
                Journal
                J Leukoc Biol
                J Leukoc Biol
                10.1002/(ISSN)1938-3673
                JLB
                Journal of Leukocyte Biology
                John Wiley and Sons Inc. (Hoboken )
                0741-5400
                1938-3673
                19 January 2021
                October 2021
                : 110
                : 4 ( doiID: 10.1002/jlb.v110.4 )
                : 753-769
                Affiliations
                [ 1 ] Department of Pediatrics Stanford University Stanford California USA
                [ 2 ] Department of Microbiology and Immunology University of Arkansas for Medical Sciences Little Rock Arkansas USA
                Author notes
                [*] [* ] Correspondence

                Jason S. Stumhofer, Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Room 521A, 4301 W. Markham St., Little Rock, AR 72205, USA.

                Email: jstumhofer@ 123456uams.edu

                Article
                JLB10873
                10.1002/JLB.4RI1020-713R
                8518401
                33464668
                c6299daa-e440-4341-89e6-cf36f2a3794b
                © 2021 The Authors. Journal of Leukocyte Biology published by Wiley Periodicals LLC on behalf of Society for Leukocyte Biology

                This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

                History
                : 10 December 2020
                : 30 October 2020
                : 11 December 2020
                Page count
                Figures: 2, Tables: 0, Pages: 17, Words: 15908
                Categories
                Solicited Review
                Reviews
                Custom metadata
                2.0
                October 2021
                Converter:WILEY_ML3GV2_TO_JATSPMC version:6.0.8 mode:remove_FC converted:15.10.2021

                Hematology
                t cells,b cells,ab,cytokines,inflammation
                Hematology
                t cells, b cells, ab, cytokines, inflammation

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