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Hematopoietic and Lymphoid Tissue Involvement in Autoimmune Diseases

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Immunology".

Deadline for manuscript submissions: closed (31 October 2022) | Viewed by 5683

Special Issue Editor


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Guest Editor
Pathophysiology Department, School of Medicine, National and Kapodistrian University of Athens,115 27 Athens, Greece
Interests: myelodysplastic syndrome; autoimmunity; lymphoma; Sjogren syndrome; leukemia
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Special Issue Information

Dear Colleagues,

Hematopoietic and lymphoid tissue involvement in autoimmune diseases is a well-established phenomenon. Hematologic abnormalities affecting one or more cell lines are common manifestations of autoimmune disease and can be reflective of disease activity. It has been suggested that there is an elevated risk of monoclonal gammopathy of undetermined significance (MGUS) or multiple myeloma in the presence of "any autoimmune disease". There is also a relationship between chronic immune dysregulation and lymphomagenesis, likely reflecting chronic immune activation and a resultant lymphoproliferative drive.

Abnormal immune regulation and persistent inflammation are hallmarks of autoimmune diseases. In addition to the production, maturation and activation of neutrophils, monocytes/macrophages and B cells, bone marrow plays a central role in regulating the immune response. It has been proposed that a defect of stem cells can ultimately cause functional changes in the immune cells derived and differentiated from them. Therefore, some researchers regard SLE as a “stem cell disorder”. Furthermore, there is strong evidence for the role of bone marrow and neutrophils in the pathogenesis of some autoimmune diseases, suggesting additional pathways for potential therapeutic modulation targeted at effector cells to minimize tissue injury.

Rheumatoid arthritis, Sjögren syndrome, systemic lupus erythematosus, celiac disease, and chronic thyroiditis have all been consistently linked to increased risks of lymphoma. The identification, validation, and use of lymphoma predictors in the setting of autoimmunity has been a matter of extensive research over the past few decades. Extensive efforts in the basic research field have revealed several novel biomarkers for lymphoma prediction, while the major cellular and molecular mechanisms of the evolutionary transition of B cells towards malignancy are under investigation.

In this Special Issue of the International Journal of Molecular Sciences, we seek to unveil the mysterious nature of the hematopoietic and lymphoid cells’ involvement in autoimmune diseases and exploit our continuously expanding knowledge to optimize therapeutics.

Dr. Michael Voulgarelis
Guest Editor

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Keywords

  • autoimmune diseases
  • lymphoma
  • cytopenias
  • bone marrow
  • hematopoietic stem cell
  • mesenchymal stem cells
  • signaling pathways
  • lymphomagenesis predictors
  • immune deregulation

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Published Papers (2 papers)

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Research

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13 pages, 2415 KiB  
Article
Akt Signaling Pathway Is Activated in the Minor Salivary Glands of Patients with Primary Sjögren’s Syndrome
by Ioanna E. Stergiou, Loukas Chatzis, Asimina Papanikolaou, Stavroula Giannouli, Athanasios G. Tzioufas, Michael Voulgarelis and Efstathia K. Kapsogeorgou
Int. J. Mol. Sci. 2021, 22(24), 13441; https://doi.org/10.3390/ijms222413441 - 14 Dec 2021
Cited by 2 | Viewed by 2323
Abstract
Primary Sjögren’s syndrome (pSS) is an autoimmune exocrinopathy of mainly the salivary and lacrimal glands associated with high prevalence of lymphoma. Akt is a phosphoinositide-dependent serine/threonine kinase, controlling numerous pathological processes, including oncogenesis and autoimmunity. Herein, we sought to examine its implication in [...] Read more.
Primary Sjögren’s syndrome (pSS) is an autoimmune exocrinopathy of mainly the salivary and lacrimal glands associated with high prevalence of lymphoma. Akt is a phosphoinositide-dependent serine/threonine kinase, controlling numerous pathological processes, including oncogenesis and autoimmunity. Herein, we sought to examine its implication in pSS pathogenesis and related lymphomagenesis. The expression of the entire and activated forms of Akt (partially and fully activated: phosphorylated at threonine-308 (T308) and serine-473 (S473), respectively), and two of its substrates, the proline-rich Akt-substrate of 40 kDa (PRAS40) and FoxO1 transcription factor has been immunohistochemically examined in minor salivary glands (MSG) of pSS patients (n = 29; including 9 with pSS-associated lymphoma) and sicca-complaining controls (sicca-controls; n = 10). The entire and phosphorylated Akt, PRAS40, and FoxO1 molecules were strongly, uniformly expressed in the MSG epithelia and infiltrating mononuclear cells of pSS patients, but not sicca-controls. Morphometric analysis revealed that the staining intensity of the fully activated phospho-Akt-S473 in pSS patients (with or without lymphoma) was significantly higher than sicca-controls. Akt pathway activation was independent from the extent or proximity of infiltrates, as well as other disease features, including lymphoma. Our findings support that the Akt pathway is specifically activated in MSGs of pSS patients, revealing novel therapeutic targets. Full article
(This article belongs to the Special Issue Hematopoietic and Lymphoid Tissue Involvement in Autoimmune Diseases)
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21 pages, 995 KiB  
Review
Activation Markers on B and T Cells and Immune Checkpoints in Autoimmune Rheumatic Diseases
by Elena V. Gerasimova, Dmitry V. Tabakov, Daria A. Gerasimova and Tatiana V. Popkova
Int. J. Mol. Sci. 2022, 23(15), 8656; https://doi.org/10.3390/ijms23158656 - 4 Aug 2022
Cited by 5 | Viewed by 2775
Abstract
In addition to identifying the major B- and T-cell subpopulations involved in autoimmune rheumatic diseases (ARDs), in recent years special attention has been paid to studying the expression of their activation markers and immune checkpoints (ICPs). The activation markers on B and T [...] Read more.
In addition to identifying the major B- and T-cell subpopulations involved in autoimmune rheumatic diseases (ARDs), in recent years special attention has been paid to studying the expression of their activation markers and immune checkpoints (ICPs). The activation markers on B and T cells are a consequence of the immune response, and these molecules are considered as sensitive specific markers of ARD activity and as promising targets for immunotherapy. ICPs regulate the activation of the immune response by preventing the initiation of autoimmune processes, and they modulate it by reducing immune cell-induced organ and tissue damage. The article considers the possible correlation of ICPs with the activity of ARDs, the efficacy of specific ARD treatments, and the prospects for the use of activation molecules and activation/blocking ICPs for the treatment of ARDs. Full article
(This article belongs to the Special Issue Hematopoietic and Lymphoid Tissue Involvement in Autoimmune Diseases)
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