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Papoutsopoulou S, Tang J, Elramli AH, Williams JM, Gupta N, Ikuomola FI, Sheibani-Tezerji R, Alam MT, Hernández-Fernaud JR, Caamaño JH, Probert CS, Muller W, Duckworth CA, Pritchard DM. Nfkb2 deficiency and its impact on plasma cells and immunoglobulin expression in murine small intestinal mucosa. Am J Physiol Gastrointest Liver Physiol 2022; 323:G306-G317. [PMID: 35916405 PMCID: PMC9485003 DOI: 10.1152/ajpgi.00037.2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The alternative (noncanonical) nuclear factor-κB (NF-κB) signaling pathway predominantly regulates the function of the p52/RelB heterodimer. Germline Nfkb2 deficiency in mice leads to loss of p100/p52 protein and offers protection against a variety of gastrointestinal conditions, including azoxymethane/dextran sulfate sodium (DSS)-induced colitis-associated cancer and lipopolysaccharide (LPS)-induced small intestinal epithelial apoptosis. However, the common underlying protective mechanisms have not yet been fully elucidated. We applied high-throughput RNA-Seq and proteomic analyses to characterize the transcriptional and protein signatures of the small intestinal mucosa of naïve adult Nfkb2-/- mice. Those data were validated by immunohistochemistry and quantitative ELISA using both small intestinal tissue lysates and serum. We identified a B-lymphocyte defect as a major transcriptional signature in the small intestinal mucosa and immunoglobulin A as the most downregulated protein by proteomic analysis in Nfkb2-/- mice. Small intestinal immunoglobulins were dramatically dysregulated, with undetectable levels of immunoglobulin A and greatly increased amounts of immunoglobulin M being detected. The numbers of IgA-producing, cluster of differentiation (CD)138-positive plasma cells were also reduced in the lamina propria of the small intestinal villi of Nfkb2-/- mice. This phenotype was even more striking in the small intestinal mucosa of RelB-/- mice, although these mice were equally sensitive to LPS-induced intestinal apoptosis as their RelB+/+ wild-type counterparts. NF-κB2/p52 deficiency confers resistance to LPS-induced small intestinal apoptosis and also appears to regulate the plasma cell population and immunoglobulin levels within the gut.NEW & NOTEWORTHY Novel transcriptomic analysis of murine proximal intestinal mucosa revealed an unexpected B cell signature in Nfkb2-/- mice. In-depth analysis revealed a defect in the CD38+ B cell population and a gut-specific dysregulation of immunoglobulin levels.
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Affiliation(s)
- Stamatia Papoutsopoulou
- 1Institute of Systems, Molecular and Integrative Biology, Faculty of Health & Life Sciences, grid.10025.36University of Liverpool, Liverpool, United Kingdom,2Department of Biochemistry and Biotechnology, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Joseph Tang
- 1Institute of Systems, Molecular and Integrative Biology, Faculty of Health & Life Sciences, grid.10025.36University of Liverpool, Liverpool, United Kingdom
| | - Ahmed H. Elramli
- 1Institute of Systems, Molecular and Integrative Biology, Faculty of Health & Life Sciences, grid.10025.36University of Liverpool, Liverpool, United Kingdom,3Department of Basic Medical Sciences, Faculty of Dentistry, University of Benghazi, Benghazi, Libya
| | - Jonathan M. Williams
- 1Institute of Systems, Molecular and Integrative Biology, Faculty of Health & Life Sciences, grid.10025.36University of Liverpool, Liverpool, United Kingdom,4Pathobiology and Population Sciences, The Royal
Veterinary College, Hatfield, United Kingdom
| | - Nitika Gupta
- 1Institute of Systems, Molecular and Integrative Biology, Faculty of Health & Life Sciences, grid.10025.36University of Liverpool, Liverpool, United Kingdom
| | - Felix I. Ikuomola
- 1Institute of Systems, Molecular and Integrative Biology, Faculty of Health & Life Sciences, grid.10025.36University of Liverpool, Liverpool, United Kingdom
| | | | - Mohammad T. Alam
- 6Warwick Medical School, Bioinformatics RTP, University of Warwick, Coventry, United Kingdom,7Department of Biology, College of Science, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Juan R. Hernández-Fernaud
- 6Warwick Medical School, Bioinformatics RTP, University of Warwick, Coventry, United Kingdom,8Unidad de Investigación, Hospital Universitario de Canarias, Instituto de Tecnologías Biomédicas, La Laguna, Spain
| | - Jorge H. Caamaño
- 9College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Chris S. Probert
- 1Institute of Systems, Molecular and Integrative Biology, Faculty of Health & Life Sciences, grid.10025.36University of Liverpool, Liverpool, United Kingdom
| | - Werner Muller
- 10Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Carrie A. Duckworth
- 1Institute of Systems, Molecular and Integrative Biology, Faculty of Health & Life Sciences, grid.10025.36University of Liverpool, Liverpool, United Kingdom
| | - D. Mark Pritchard
- 1Institute of Systems, Molecular and Integrative Biology, Faculty of Health & Life Sciences, grid.10025.36University of Liverpool, Liverpool, United Kingdom
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Pisano M, Cheng Y, Sun F, Dhakal B, D’Souza A, Chhabra S, Knight JM, Rao S, Zhan F, Hari P, Janz S. Laboratory Mice - A Driving Force in Immunopathology and Immunotherapy Studies of Human Multiple Myeloma. Front Immunol 2021; 12:667054. [PMID: 34149703 PMCID: PMC8206561 DOI: 10.3389/fimmu.2021.667054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 04/28/2021] [Indexed: 11/13/2022] Open
Abstract
Mouse models of human cancer provide an important research tool for elucidating the natural history of neoplastic growth and developing new treatment and prevention approaches. This is particularly true for multiple myeloma (MM), a common and largely incurable neoplasm of post-germinal center, immunoglobulin-producing B lymphocytes, called plasma cells, that reside in the hematopoietic bone marrow (BM) and cause osteolytic lesions and kidney failure among other forms of end-organ damage. The most widely used mouse models used to aid drug and immunotherapy development rely on in vivo propagation of human myeloma cells in immunodeficient hosts (xenografting) or myeloma-like mouse plasma cells in immunocompetent hosts (autografting). Both strategies have made and continue to make valuable contributions to preclinical myeloma, including immune research, yet are ill-suited for studies on tumor development (oncogenesis). Genetically engineered mouse models (GEMMs), such as the widely known Vκ*MYC, may overcome this shortcoming because plasma cell tumors (PCTs) develop de novo (spontaneously) in a highly predictable fashion and accurately recapitulate many hallmarks of human myeloma. Moreover, PCTs arise in an intact organism able to mount a complete innate and adaptive immune response and tumor development reproduces the natural course of human myelomagenesis, beginning with monoclonal gammopathy of undetermined significance (MGUS), progressing to smoldering myeloma (SMM), and eventually transitioning to frank neoplasia. Here we review the utility of transplantation-based and transgenic mouse models of human MM for research on immunopathology and -therapy of plasma cell malignancies, discuss strengths and weaknesses of different experimental approaches, and outline opportunities for closing knowledge gaps, improving the outcome of patients with myeloma, and working towards a cure.
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Affiliation(s)
- Michael Pisano
- Division of Hematology and Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA, United States
| | - Yan Cheng
- Division of Hematology and Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Fumou Sun
- Division of Hematology and Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Binod Dhakal
- Division of Hematology and Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Anita D’Souza
- Division of Hematology and Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Saurabh Chhabra
- Division of Hematology and Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Jennifer M. Knight
- Departments of Psychiatry, Medicine, and Microbiology & Immunology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Sridhar Rao
- Division of Hematology, Oncology and Marrow Transplant, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, United States
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, United States
| | - Fenghuang Zhan
- Myeloma Center, Department of Internal Medicine and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - Parameswaran Hari
- Division of Hematology and Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Siegfried Janz
- Division of Hematology and Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
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Nejatbakhsh Samimi L, Farhadi E, Tahmasebi MN, Jamshidi A, Sharafat Vaziri A, Mahmoudi M. NF-κB signaling in rheumatoid arthritis with focus on fibroblast-like synoviocytes. AUTOIMMUNITY HIGHLIGHTS 2020. [PMCID: PMC7414649 DOI: 10.1186/s13317-020-00135-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The nuclear factor-κB (NF-κB) signaling pathway regulates multiple processes in innate and adaptive immune cells. This pathway is involved in inflammation through the regulation of cytokines, chemokines, and adhesion molecules expression. The NF-κB transcription factor also participates in the survival, proliferation, and differentiation of cells. Therefore, deregulated NF-κB activation contributes to the pathogenesis of inflammatory diseases. Rheumatoid arthritis (RA) is classified as a heterogeneous and complex autoimmune inflammatory disease. Although different immune and non-immune cells contribute to the RA pathogenesis, fibroblast-like synoviocytes (FLSs) play a crucial role in disease progression. These cells are altered during the disease and produce inflammatory mediators, including inflammatory cytokines and matrix metalloproteinases, which result in joint and cartilage erosion. Among different cell signaling pathways, it seems that deregulated NF-κB activation is associated with the inflammatory picture of RA. NF-κB activation can also promote the proliferation of RA-FLSs as well as the inhibition of FLS apoptosis that results in hyperplasia in RA synovium. In this review, the role of NF-κB transcription factor in immune and non-immune cells (especially FLSs) that are involved in RA pathogenesis are discussed.
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Noort AR, Tak PP, Tas SW. Non-canonical NF-κB signaling in rheumatoid arthritis: Dr Jekyll and Mr Hyde? Arthritis Res Ther 2015; 17:15. [PMID: 25774937 PMCID: PMC4308835 DOI: 10.1186/s13075-015-0527-3] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The nuclear factor-κB (NF-κB) family of transcription factors is essential for the expression of pro-inflammatory cytokines, but can also induce regulatory pathways. NF-κB can be activated via two distinct pathways: the classical or canonical pathway, and the alternative or non-canonical pathway. It is well established that the canonical NF-κB pathway is essential both in acute inflammatory responses and in chronic inflammatory diseases, including rheumatoid arthritis (RA). Although less extensively studied, the non-canonical NF-κB pathway is not only central in lymphoid organ development and adaptive immune responses, but is also thought to play an important role in the pathogenesis of RA. Importantly, this pathway appears to have cell type-specific functions and, since many different cell types are involved in the pathogenesis of RA, it is difficult to predict the net overall contribution of the non-canonical NF-κB pathway to synovial inflammation. In this review, we describe the current understanding of non-canonical NF-κB signaling in various important cell types in the context of RA and consider the relevance to the pathogenesis of the disease. In addition, we discuss current drugs targeting this pathway, as well as future therapeutic prospects.
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