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Bohat R, Liang X, Chen Y, Xu C, Zheng N, Guerrero A, Hou J, Jaffery R, Egan NA, Li Y, Tang Y, Unsal E, Robles A, Chen S, Major AM, Elldakli H, Chung SH, Liang H, Hicks MJ, Du Y, Lin JS, Chen X, Mohan C, Peng W. Fas lpr gene dosage tunes the extent of lymphoproliferation and T cell differentiation in lupus. Clin Immunol 2024; 258:109874. [PMID: 38113962 DOI: 10.1016/j.clim.2023.109874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 11/23/2023] [Accepted: 12/13/2023] [Indexed: 12/21/2023]
Abstract
Sle1 and Faslpr are two lupus susceptibility loci that lead to manifestations of systemic lupus erythematosus. To evaluate the dosage effects of Faslpr in determining cellular and serological phenotypes associated with lupus, we developed a new C57BL/6 (B6) congenic lupus strain, B6.Sle1/Sle1.Faslpr/+ (Sle1homo.lprhet) and compared it with B6.Faslpr/lpr (lprhomo), B6.Sle1/Sle1 (Sle1homo), and B6.Sle1/Sle1.Faslpr/lpr (Sle1homo.lprhomo) strains. Whereas Sle1homo.lprhomo mice exhibited profound lymphoproliferation and early mortality, Sle1homo.lprhet mice had a lifespan comparable to B6 mice, with no evidence of splenomegaly or lymphadenopathy. Compared to B6 monogenic lupus strains, Sle1homo.lprhet mice exhibited significantly elevated serum ANA antibodies and increased proteinuria. Additionally, Sle1homo.lprhet T cells had an increased propensity to differentiate into Th1 cells. Gene dose effects of Faslpr were noted in upregulating serum IL-1⍺, IL-2, and IL-27. Taken together, Sle1homo.lprhet strain is a new C57BL/6-based model of lupus, ideal for genetic studies, autoantibody repertoire investigation, and for exploring Th1 effector cell skewing without early-age lymphoproliferative autoimmunity.
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Affiliation(s)
- Ritu Bohat
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States of America
| | - Xiaofang Liang
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States of America
| | - Yanping Chen
- Department of Biomedical Engineering, University of Houston, Houston, TX 77204, United States of America
| | - Chunyu Xu
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States of America
| | - Ningbo Zheng
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States of America
| | - Ashley Guerrero
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States of America
| | - Jiakai Hou
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States of America
| | - Roshni Jaffery
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States of America
| | - Nicholas A Egan
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States of America
| | - Yaxi Li
- Department of Biomedical Engineering, University of Houston, Houston, TX 77204, United States of America
| | - Yitao Tang
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States of America; UTHealth Graduate School of Biomedical Sciences, The University of Texas MD Anderson, Houston, TX 77030, United States of America
| | - Esra Unsal
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States of America
| | - Adolfo Robles
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States of America
| | - Si Chen
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States of America
| | - Angela M Major
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX 77030, United States of America
| | - Hadil Elldakli
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States of America
| | - Sang-Hyuk Chung
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States of America
| | - Han Liang
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States of America; Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States of America
| | - M John Hicks
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX 77030, United States of America
| | - Yong Du
- Department of Cellular & Molecular Physiology, Penn State College of Medicine, Hershey, PA 17033, United States of America
| | - Jamie S Lin
- Section of Nephrology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States of America
| | - Xiqun Chen
- Department of Neurology, Mass General Institute for Neurodegenerative Disease, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, United States of America; Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, United States of America
| | - Chandra Mohan
- Department of Biomedical Engineering, University of Houston, Houston, TX 77204, United States of America; Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, United States of America
| | - Weiyi Peng
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, United States of America; Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, United States of America.
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2
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Little AJ, Chen PM, Vesely MD, Khan RN, Fiedler J, Garritano J, Maisha FI, McNiff JM, Craft J. HIF-1 regulates pathogenic cytotoxic T cells in lupus skin disease. JCI Insight 2023; 8:e166076. [PMID: 37526979 PMCID: PMC10543720 DOI: 10.1172/jci.insight.166076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 07/11/2023] [Indexed: 08/03/2023] Open
Abstract
Cutaneous lupus erythematosus (CLE) is a disfiguring autoimmune skin disease characterized by an inflammatory infiltrate rich in T cells, which are strongly implicated in tissue damage. How these cells adapt to the skin environment and promote tissue inflammation and damage is not known. In lupus nephritis, we previously identified an inflammatory gene program in kidney-infiltrating T cells that is dependent on HIF-1, a transcription factor critical for the cellular and developmental response to hypoxia as well as inflammation-associated signals. In our present studies using a mouse model of lupus skin disease, we find that skin-infiltrating CD4+ and CD8+ T cells also express high levels of HIF-1. Skin-infiltrating T cells demonstrated a strong cytotoxic signature at the transcript and protein levels, and HIF-1 inhibition abrogated skin and systemic diseases in association with decreased T cell cytotoxic activity. We also demonstrate in human CLE tissue that the T cell-rich inflammatory infiltrate exhibited increased amounts of HIF-1 and a cytotoxic signature. Granzyme B-expressing T cells were concentrated at sites of skin tissue damage in CLE, suggesting relevance of this pathway to human disease.
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Affiliation(s)
| | - Ping-Min Chen
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
- Institute of Biochemistry and Molecular Biology, National Taiwan University College of Medicine, Taipei City, Taiwan
| | | | | | | | | | | | - Jennifer M. McNiff
- Department of Dermatology and
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Joe Craft
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
- Department of Internal Medicine (Rheumatology)
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3
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You T, Lin X, Zhang C, Wang W, Lei M. Correlation between serum β2-microglobulin level and systemic lupus erythematosus disease activity: A PRISMA-compliant meta-analysis. Medicine (Baltimore) 2022; 101:e30594. [PMID: 36181005 PMCID: PMC9524925 DOI: 10.1097/md.0000000000030594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Numerous studies have explored whether serum beta 2-microglobulin (β2-MG) can be used as a biomarker for monitoring systemic lupus erythematosus (SLE) disease activity, but the results are conflicting. Therefore, we performed a systematic meta-analysis to further investigate the correlation between serum β2-MG level and SLE disease activity. METHODS PubMed, Web of Science, Embase, and CNKI databases were thoroughly searched for eligible studies through April 2022. Standardized mean differences with 95% confidence intervals (95% CIs) were used to depict the differences in serum β2-MG levels between groups compared in the studies. The correlation between serum β2-MG level and SLE disease activity was assessed using Fisher z-values. RESULTS Sixteen articles with combined 1368 SLE patients were included in this meta-analysis. Serum β2-MG levels were significantly higher in SLE patients than in healthy controls (pooled standardized mean difference: 3.98, 95% CI: 2.50-5.46, P < .01). In addition, patients with active SLE had an increased serum β2-MG concentration compared to their inactive SLE counterparts. Furthermore, a positive correlation was observed between serum β2-MG levels and SLE disease activity (pooled Fisher z = 0.78, 95% CI: 0.61-0.96, P < .01). CONCLUSIONS This study suggests that patients with SLE have higher serum β2-MG levels than healthy controls and that serum β2-MG levels are positively correlated with SLE disease activity. Thus, serum β2-MG level may be a promising biomarker for monitoring SLE disease activity.
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Affiliation(s)
- Tao You
- Department of Endocrinology and Rheumatology, The Affiliated Dongnan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen City, Fujian Province, China
| | - Xiaoyin Lin
- Department of Endocrinology and Rheumatology, The Affiliated Dongnan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen City, Fujian Province, China
| | - Chunhong Zhang
- Department of Endocrinology and Rheumatology, The Affiliated Dongnan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen City, Fujian Province, China
| | - Weilun Wang
- Department of Endocrinology and Rheumatology, The Affiliated Dongnan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen City, Fujian Province, China
| | - Meihong Lei
- Department of Endocrinology and Rheumatology, The Affiliated Dongnan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen City, Fujian Province, China
- *Correspondence: Meihong Lei, Department of Endocrinology and Rheumatology, The Affiliated Dongnan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen City, Fujian Province, China (e-mail: )
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4
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Elkoshi Z. Cancer and Autoimmune Diseases: A Tale of Two Immunological Opposites? Front Immunol 2022; 13:821598. [PMID: 35145524 PMCID: PMC8822211 DOI: 10.3389/fimmu.2022.821598] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 01/06/2022] [Indexed: 01/21/2023] Open
Abstract
The present article compares, side-by-side, cancer and autoimmune diseases in terms of innate and adaptive immune cells involvement, MHC Class I and Class II expression, TGFβ effect, immune modulating drugs effect and the effect of reactive oxygen species. The change in the inflammatory immune reaction during the progress of cancer and the effect of this change on the comorbidity of autoimmune diseases and cancer are discussed. The similar inflammatory properties of autoimmune diseases and early cancer, and the contrasting inflammatory properties of autoimmune diseases and advanced cancer elucidate the increased incidence of many types of cancer in patients with pre-existing autoimmune diseases and the decreased cancer-specific mortality of these patients. Stage-dependent effects of reactive oxygen-species on tumor proliferation are an additional probable cause for these epidemiological observations. The relationship: {standardized incidence ratio (SIR)} > {cancer-specific hazard ratio (HR)} for cancer patients with a history of autoimmune diseases is substantiated and rationalized.
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5
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Natural Killer T (NKT) Cells and Periodontitis: Potential Regulatory Role of NKT10 Cells. Mediators Inflamm 2021; 2021:5573937. [PMID: 34594157 PMCID: PMC8478603 DOI: 10.1155/2021/5573937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 08/24/2021] [Indexed: 12/03/2022] Open
Abstract
Natural killer T (NKT) cells constitute a unique subset of T lymphocytes characterized by specifically interacting with antigenic glycolipids conjugated to the CD1d receptor on antigen-presenting cells. Functionally, NKT cells are capable of performing either effector or suppressor immune responses, depending on their production of proinflammatory or anti-inflammatory cytokines, respectively. Effector NKT cells are subdivided into three subsets, termed NKT1, NKT2, and NKT17, based on the cytokines they produce and their similarity to the cytokine profile produced by Th1, Th2, and Th17 lymphocytes, respectively. Recently, a new subgroup of NKT cells termed NKT10 has been described, which cooperates and interacts with other immune cells to promote immunoregulatory responses. Although the tissue-specific functions of NKT cells have not been fully elucidated, their activity has been associated with the pathogenesis of different inflammatory diseases with immunopathogenic similarities to periodontitis, including osteolytic pathologies such as rheumatoid arthritis and osteoporosis. In the present review, we revise and discuss the pathogenic characteristics of NKT cells in these diseases and their role in the pathogenesis of periodontitis; particularly, we analyze the potential regulatory role of the IL-10-producing NKT10 cells.
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6
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Parayath NN, Hao S, Stephan SB, Koehne AL, Watson CE, Stephan MT. Genetic in situ engineering of myeloid regulatory cells controls inflammation in autoimmunity. J Control Release 2021; 339:553-561. [PMID: 34437913 PMCID: PMC8599636 DOI: 10.1016/j.jconrel.2021.08.040] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 08/20/2021] [Accepted: 08/21/2021] [Indexed: 12/20/2022]
Abstract
The ability of myeloid regulatory cells (MRCs) to control immune responses and to promote tolerance has prompted enormous interest in exploiting them therapeutically to treat inflammation, autoimmunity, or to improve outcomes in transplantation. While immunomodulatory small-molecule compounds and antibodies have provided relief for some patients, the dosing entails high systemic drug exposures and thus increased risk of off-target adverse effects. More recently, MRC-based cell-therapy products have entered clinical testing for tolerance induction. However, the elaborate and expensive protocols currently required to manufacture engineered MRCs ex vivo put this approach beyond the reach of many patients who might benefit. A solution could be to directly program MRCs in vivo. Here we describe a targeted nanocarrier that delivers in vitro-transcribed mRNA encoding a key anti-inflammatory mediator. We demonstrate in models of systemic lupus erythematosus that infusions of nanoparticles formulated with mRNA encoding glucocorticoid-induced leucine zipper (GILZ) effectively control the disease. We further establish that these nanoreagents are safe for repeated dosing. Implemented in the clinic, this new therapy could enable physicians to treat autoimmune disease while avoiding systemic treatments that disrupt immune homeostasis.
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Affiliation(s)
- N N Parayath
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - S Hao
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - S B Stephan
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - A L Koehne
- Translational Pathology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - C E Watson
- Translational Pathology, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - M T Stephan
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; Department of Bioengineering and Molecular Engineering & Sciences Institute, University of Washington, Seattle 98195, WA, USA.
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7
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Invariant NKT Cells and Rheumatic Disease: Focus on Primary Sjogren Syndrome. Int J Mol Sci 2019; 20:ijms20215435. [PMID: 31683641 PMCID: PMC6862604 DOI: 10.3390/ijms20215435] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/28/2019] [Accepted: 10/29/2019] [Indexed: 02/07/2023] Open
Abstract
Primary Sjogren syndrome (pSS) is a complex autoimmune disease mainly affecting salivary and lacrimal glands. Several factors contribute to pSS pathogenesis; in particular, innate immunity seems to play a key role in disease etiology. Invariant natural killer (NK) T cells (iNKT) are a T-cell subset able to recognize glycolipid antigens. Their function remains unclear, but studies have pointed out their ability to modulate the immune system through the promotion of specific cytokine milieu. In this review, we discussed the possible role of iNKT in pSS development, as well as their implications as future markers of disease activity.
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8
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Suarez-Fueyo A, Tsokos MG, Kwok SK, Maeda K, Katsuyama E, Lapchak PH, Tsokos GC. Hyaluronic Acid Synthesis Contributes to Tissue Damage in Systemic Lupus Erythematosus. Front Immunol 2019; 10:2172. [PMID: 31572382 PMCID: PMC6753633 DOI: 10.3389/fimmu.2019.02172] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 08/28/2019] [Indexed: 12/22/2022] Open
Abstract
Hyaluronic acid (HA), a component of the extracellular matrix, is the ligand for CD44 and has been implicated in the pathogenesis of kidney inflammation in patients with systemic lupus erythematosus (SLE), but its direct role and mechanism of action have not been studied. Here we show that administration of hymecromone (4-Methylumbelliferone, 4-MU), an HA synthesis inhibitor, to lupus-prone mice suppressed dramatically lupus-related pathology. Interestingly, 4-MU stopped the appearance of disease when administered prior to its onset and inhibited the progression of disease when administered after its appearance. Inhibition of HA synthesis in vivo reduced tissue damage and the number of intrarenal lymphoid cell infiltrates including double negative CD3+CD4-CD8- T cells which are known to be involved in the pathogenesis of SLE. Exposure of human peripheral blood mononuclear cells to HA in vitro increased the generation of CD3+CD4-CD8- T cells through a mechanism involving Rho-associated kinase. Our results signify the importance of the HA-rich tissue microenvironment in the activation of lymphocytes to cause tissue damage in SLE and suggest the consideration of inhibition of HA synthesis to treat patients.
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Affiliation(s)
| | | | | | | | | | | | - George C. Tsokos
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
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9
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Tilstra JS, Avery L, Menk AV, Gordon RA, Smita S, Kane LP, Chikina M, Delgoffe GM, Shlomchik MJ. Kidney-infiltrating T cells in murine lupus nephritis are metabolically and functionally exhausted. J Clin Invest 2018; 128:4884-4897. [PMID: 30130253 DOI: 10.1172/jci120859] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 08/08/2018] [Indexed: 12/13/2022] Open
Abstract
While T cells are important for the pathogenesis of systemic lupus erythematosus (SLE) and lupus nephritis, little is known about how T cells function after infiltrating the kidney. The current paradigm suggests that kidney-infiltrating T cells (KITs) are activated effector cells contributing to tissue damage and ultimately organ failure. Herein, we demonstrate that the majority of CD4+ and CD8+ KITs in 3 murine lupus models are not effector cells, as hypothesized, but rather express multiple inhibitory receptors and are highly dysfunctional, with reduced cytokine production and proliferative capacity. In other systems, this hypofunctional profile is linked directly to metabolic and specifically mitochondrial dysfunction, which we also observed in KITs. The T cell phenotype was driven by the expression of an "exhausted" transcriptional signature. Our data thus reveal that the tissue parenchyma has the capability of suppressing T cell responses and limiting damage to self. These findings suggest avenues for the treatment of autoimmunity based on selectively exploiting the exhausted phenotype of tissue-infiltrating T cells.
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Affiliation(s)
| | - Lyndsay Avery
- Department of Immunology.,Infectious Disease and Microbiology Graduate Program
| | | | | | | | | | - Maria Chikina
- Department of Computational and Systems Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Greg M Delgoffe
- Department of Immunology.,Tumor Microenvironment Center.,Cancer Immunology Program, and
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10
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Mande P, Zirak B, Ko WC, Taravati K, Bride KL, Brodeur TY, Deng A, Dresser K, Jiang Z, Ettinger R, Fitzgerald KA, Rosenblum MD, Harris JE, Marshak-Rothstein A. Fas ligand promotes an inducible TLR-dependent model of cutaneous lupus-like inflammation. J Clin Invest 2018; 128:2966-2978. [PMID: 29889098 PMCID: PMC6025993 DOI: 10.1172/jci98219] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 04/17/2018] [Indexed: 02/06/2023] Open
Abstract
Toll-like receptors TLR7 and TLR9 are both implicated in the activation of autoreactive B cells and other cell types associated with systemic lupus erythematosus (SLE) pathogenesis. However, Tlr9-/- autoimmune-prone strains paradoxically develop more severe disease. We have now leveraged the negative regulatory role of TLR9 to develop an inducible rapid-onset murine model of systemic autoimmunity that depends on T cell detection of a membrane-bound OVA fusion protein expressed by MHC class II+ cells, expression of TLR7, expression of the type I IFN receptor, and loss of expression of TLR9. These mice are distinguished by a high frequency of OVA-specific Tbet+, IFN-γ+, and FasL-expressing Th1 cells as well as autoantibody-producing B cells. Unexpectedly, contrary to what occurs in most models of SLE, they also developed skin lesions that are very similar to those of human cutaneous lupus erythematosus (CLE) as far as clinical appearance, histological changes, and gene expression. FasL was a key effector mechanism in the skin, as the transfer of FasL-deficient DO11gld T cells completely failed to elicit overt skin lesions. FasL was also upregulated in human CLE biopsies. Overall, our model provides a relevant system for exploring the pathophysiology of CLE as well as the negative regulatory role of TLR9.
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Affiliation(s)
- Purvi Mande
- Department of Medicine, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | - Bahar Zirak
- Department of Dermatology, UCSF, San Francisco, California, USA
| | - Wei-Che Ko
- Department of Dermatology, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | - Keyon Taravati
- Department of Dermatology, UCSF, San Francisco, California, USA
| | - Karen L Bride
- Department of Microbiology, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Tia Y Brodeur
- Department of Medicine, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | - April Deng
- Department of Dermatology, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | - Karen Dresser
- Department of Dermatology, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | - Zhaozhao Jiang
- Department of Medicine, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | - Rachel Ettinger
- Respiratory, Autoimmunity, and Inflammation Department, MedImmune, Gaithersburg, Maryland, USA
| | - Katherine A Fitzgerald
- Department of Medicine, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | | | - John E Harris
- Department of Dermatology, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA
| | - Ann Marshak-Rothstein
- Department of Medicine, University of Massachusetts School of Medicine, Worcester, Massachusetts, USA.,Department of Microbiology, Boston University School of Medicine, Boston, Massachusetts, USA
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11
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Argyropoulos CP, Chen SS, Ng YH, Roumelioti ME, Shaffi K, Singh PP, Tzamaloukas AH. Rediscovering Beta-2 Microglobulin As a Biomarker across the Spectrum of Kidney Diseases. Front Med (Lausanne) 2017; 4:73. [PMID: 28664159 PMCID: PMC5471312 DOI: 10.3389/fmed.2017.00073] [Citation(s) in RCA: 150] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 05/26/2017] [Indexed: 12/28/2022] Open
Abstract
There is currently an unmet need for better biomarkers across the spectrum of renal diseases. In this paper, we revisit the role of beta-2 microglobulin (β2M) as a biomarker in patients with chronic kidney disease and end-stage renal disease. Prior to reviewing the numerous clinical studies in the area, we describe the basic biology of β2M, focusing in particular on its role in maintaining the serum albumin levels and reclaiming the albumin in tubular fluid through the actions of the neonatal Fc receptor. Disorders of abnormal β2M function arise as a result of altered binding of β2M to its protein cofactors and the clinical manifestations are exemplified by rare human genetic conditions and mice knockouts. We highlight the utility of β2M as a predictor of renal function and clinical outcomes in recent large database studies against predictions made by recently developed whole body population kinetic models. Furthermore, we discuss recent animal data suggesting that contrary to textbook dogma urinary β2M may be a marker for glomerular rather than tubular pathology. We review the existing literature about β2M as a biomarker in patients receiving renal replacement therapy, with particular emphasis on large outcome trials. We note emerging proteomic data suggesting that β2M is a promising marker of chronic allograft nephropathy. Finally, we present data about the role of β2M as a biomarker in a number of non-renal diseases. The goal of this comprehensive review is to direct attention to the multifaceted role of β2M as a biomarker, and its exciting biology in order to propose the next steps required to bring this recently rediscovered biomarker into the twenty-first century.
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Affiliation(s)
- Christos P Argyropoulos
- Nephrology Division, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM, United States
| | - Shan Shan Chen
- Nephrology Division, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM, United States
| | - Yue-Harn Ng
- Nephrology Division, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM, United States
| | - Maria-Eleni Roumelioti
- Nephrology Division, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM, United States
| | - Kamran Shaffi
- Nephrology Division, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM, United States
| | - Pooja P Singh
- Nephrology Division, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM, United States
| | - Antonios H Tzamaloukas
- Nephrology Division, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM, United States.,Raymond G. Murphy VA Medical Center Albuquerque, Albuquerque, NM, United States
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12
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King JK, Philips RL, Eriksson AU, Kim PJ, Halder RC, Lee DJ, Singh RR. Langerhans Cells Maintain Local Tissue Tolerance in a Model of Systemic Autoimmune Disease. THE JOURNAL OF IMMUNOLOGY 2015; 195:464-76. [PMID: 26071559 DOI: 10.4049/jimmunol.1402735] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 05/15/2015] [Indexed: 12/23/2022]
Abstract
Systemic autoimmune diseases such as lupus affect multiple organs, usually in a diverse fashion where only certain organs are affected in individual patients. It is unclear whether the "local" immune cells play a role in regulating tissue specificity in relation to disease heterogeneity in systemic autoimmune diseases. In this study, we used skin as a model to determine the role of tissue-resident dendritic cells (DCs) in local and systemic involvement within a systemic lupus disease model. Skin-resident DCs, namely, Langerhans cells (LCs), have been implicated in regulating tolerance or autoimmunity using elegant transgenic models, however, their role in local versus systemic immune regulation is unknown. We demonstrate that although lymphocytes from skin-draining lymph nodes of autoimmune-prone MRL/MpJ-Fas(lpr/lp) (r) (MRL-lpr) mice react spontaneously to a physiological skin self-Ag desmoglein-3, epicutaneous applications of desmoglein-3 induced tolerance that is dependent on LCs. Inducible ablation of LCs in adult preclinical MRL-lpr and MRL/MpJ-Fas(+/+) mice resulted in increased autoantibodies against skin Ags and markedly accelerated lupus dermatitis with increased local macrophage infiltration, but had no effect on systemic autoantibodies such as anti-dsDNA Abs or disease in other organs such as kidneys, lung, and liver. Furthermore, skin-draining lymph nodes of LC-ablated MRL-lpr mice had significantly fewer CD4(+) T cells producing anti-inflammatory cytokine IL-10 than LC-intact controls. These results indicate that a skin-resident DC population regulates local tolerance in systemic lupus and emphasize the importance of the local immune milieu in preventing tissue-specific autoimmunity, yet have no effect on systemic autoimmunity.
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Affiliation(s)
- Jennifer K King
- Autoimmunity and Tolerance Laboratory, Division of Rheumatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095
| | - Rachael L Philips
- Autoimmunity and Tolerance Laboratory, Division of Rheumatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095
| | - Anna U Eriksson
- Autoimmunity and Tolerance Laboratory, Division of Rheumatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095
| | - Peter J Kim
- Autoimmunity and Tolerance Laboratory, Division of Rheumatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095
| | - Ramesh C Halder
- Autoimmunity and Tolerance Laboratory, Division of Rheumatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095
| | - Delphine J Lee
- Dirks/Dougherty Laboratory for Cancer Research, Department of Translational Immunology, John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA 90404
| | - Ram Raj Singh
- Autoimmunity and Tolerance Laboratory, Division of Rheumatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095; Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095; Molecular Toxicology Interdepartmental Program, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095; and Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095
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Tang X, Zhang B, Jarrell JA, Price JV, Dai H, Utz PJ, Strober S. Ly108 expression distinguishes subsets of invariant NKT cells that help autoantibody production and secrete IL-21 from those that secrete IL-17 in lupus prone NZB/W mice. J Autoimmun 2014; 50:87-98. [PMID: 24508410 DOI: 10.1016/j.jaut.2014.01.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 12/19/2013] [Accepted: 01/01/2014] [Indexed: 01/12/2023]
Abstract
Lupus is a systemic autoimmune disease characterized by anti-nuclear antibodies in humans and genetically susceptible NZB/W mice that can cause immune complex glomerulonephritis. T cells contribute to lupus pathogenesis by secreting pro-inflammatory cytokines such as IL-17, and by interacting with B cells and secreting helper factors such as IL-21 that promote production of IgG autoantibodies. In the current study, we determined whether purified NKT cells or far more numerous conventional non-NKT cells in the spleen of NZB/W female mice secrete IL-17 and/or IL-21 after TCR activation in vitro, and provide help for spontaneous IgG autoantibody production by purified splenic CD19(+) B cells. Whereas invariant NKT cells secreted large amounts of IL-17 and IL-21, and helped B cells, non-NKT cells did not. The subset of IL-17 secreting NZB/W NKT cells expressed the Ly108(lo)CD4(-)NK1.1(-) phenotype, whereas the IL-21 secreting subset expressed the Ly108(hi)CD4(+)NK1.1(-) phenotype and helped B cells secrete a variety of IgG anti-nuclear antibodies. α-galactocylceramide enhanced the helper activity of NZB/W and B6.Sle1b NKT cells for IgG autoantibody secretion by syngeneic B cells. In conclusion, different subsets of iNKT cells from mice with genetic susceptibility to lupus can contribute to pathogenesis by secreting pro-inflammatory cytokines and helping autoantibody production.
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Affiliation(s)
- Xiaobin Tang
- Department of Medicine, Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA, USA
| | - Bo Zhang
- Department of Chemistry, Stanford University, Stanford, CA, USA
| | - Justin A Jarrell
- Department of Medicine, Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA, USA
| | - Jordan V Price
- Department of Medicine, Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA, USA
| | - Hongjie Dai
- Department of Chemistry, Stanford University, Stanford, CA, USA
| | - Paul J Utz
- Department of Medicine, Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA, USA
| | - Samuel Strober
- Department of Medicine, Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA, USA.
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Miyake S, Chiba A, Yamamura T. Potential of targeting natural killer T cells for the treatment of autoimmune diseases. Mod Rheumatol 2014; 14:279-84. [DOI: 10.3109/s10165-004-0309-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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15
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Skare TL, Ferri K, Santos MA. Systemic lupus erythematosus activity and beta two microglobulin levels. SAO PAULO MED J 2014; 132:239-42. [PMID: 25055070 PMCID: PMC10496732 DOI: 10.1590/1516-3180.2014.1324703] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 09/11/2013] [Accepted: 09/17/2013] [Indexed: 11/22/2022] Open
Abstract
CONTEXT AND OBJECTIVE Systemic lupus erythematosus (SLE) is an autoimmune disease with a cyclical clinical course. Evaluation of the clinical activity of this disease is important for choosing the correct treatment. The objective of this study was to analyze the value of beta-2 microglobulin (β2M) serum levels in determining SLE clinical activity. DESIGN AND SETTING Cross-sectional analytical study conducted at the rheumatology outpatient clinic of a private university hospital. METHODS 129 SLE patients were studied regarding disease activity using SLEDAI (SLE Disease Activity Index) and cumulative damage using SLICC ACR (SLE International Collaborating Clinics/American College of Rheumatology Damage Index for SLE). At the same time, the β2M serum level, ESR (erythrocyte sedimentation rate), anti-dsDNA (anti-double-stranded DNA) and C3 and C4 complement fractions were determined. RESULTS β2M levels correlated positively with SLEDAI (P = 0.02) and ESR (P = 0.0009) and negatively with C3 (P = 0.007). Patients who were positive for anti-dsDNA had higher β2M serum levels (P = 0.009). CONCLUSION β2M levels are elevated in SLE patients with active disease.
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Affiliation(s)
- Thelma Larocca Skare
- MD, PhD. Associate Professor, Discipline of Rheumatology, Faculdade Evangélica do Paraná, and Head of Rheumatology Unit, Hospital Universitário Evangélico de Curitiba, Curitiba, Paraná, Brazil
| | - Kellen Ferri
- F
Medical Student. Faculdade Evangélica do Paraná, Curitiba, Paraná, Brazil
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Tsumiyama K, Hashiramoto A, Takimoto M, Tsuji-Kawahara S, Miyazawa M, Shiozawa S. IFN-γ-producing effector CD8 T lymphocytes cause immune glomerular injury by recognizing antigen presented as immune complex on target tissue. THE JOURNAL OF IMMUNOLOGY 2013; 191:91-6. [PMID: 23720810 DOI: 10.4049/jimmunol.1203217] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
We investigated the role of effector CD8 T cells in the pathogenesis of immune glomerular injury. BALB/c mice are not prone to autoimmune disease, but after 12 immunizations with OVA they developed a variety of autoantibodies and glomerulonephritis accompanied by immune complex (IC) deposition. In these mice, IFN-γ-producing effector CD8 T cells were significantly increased concomitantly with glomerulonephritis. In contrast, after 12 immunizations with keyhole limpet hemocyanin, although autoantibodies appeared, IFN-γ-producing effector CD8 T cells did not develop, and glomerular injury was not induced. In β2-microglobulin-deficient mice lacking CD8 T cells, glomerular injury was not induced after 12 immunizations with OVA, despite massive deposition of IC in the glomeruli. In mice containing a targeted disruption of the exon encoding the membrane-spanning region of the Ig μ-chain (μMT mice), 12 immunizations with OVA induced IFN-γ-producing effector CD8 T cells but not IC deposition or glomerular injury. When CD8 T cells from mice immunized 12 times with OVA were transferred into naive recipients, glomerular injury could be induced, but only when a single injection of OVA was also given simultaneously. Importantly, injection of OVA could be replaced by one injection of the sera from mice that had been fully immunized with OVA. This indicates that deposition of IC is required for effector CD8 T cells to cause immune tissue injury. Thus, in a mouse model of systemic lupus erythematosus, glomerular injury is caused by effector CD8 T cells that recognize Ag presented as IC on the target renal tissue.
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Affiliation(s)
- Ken Tsumiyama
- Department of Medicine, Kyushu University Beppu Hospital, Tsurumi, Beppu, Japan
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17
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Singh RR, Yang JQ, Kim PJ, Halder RC. Germline deletion of β2 microglobulin or CD1d reduces anti-phospholipid antibody, but increases autoantibodies against non-phospholipid antigens in the NZB/W F1 model of lupus. Arthritis Res Ther 2013; 15:R47. [PMID: 23531237 PMCID: PMC3672782 DOI: 10.1186/ar4206] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Accepted: 03/19/2013] [Indexed: 11/25/2022] Open
Abstract
Introduction β2-microglobulin (β2m) is required for the surface expression of MHC class I and class I-like proteins such as CD1d, Qa1 and neonatal Fc receptor (FcRn), all of which may impact the development of autoimmunity. Since CD1d is known to bind and present phospholipid antigens to T cells, we asked if the deficiency of β2m or CD1d will impact the development of anti-phospholipid antibodies as compared to other aspects of lupus autoimmunity. Methods We introgressed the β2m-null genotype onto the NZB and NZW backgrounds for 12 to 14 generations to generate genetically lupus-susceptible (NZB/NZW)F1 (BWF1) mice that are β2m-deficient (β2m°). Circulating immunoglobulins (Ig), rheumatoid factor (RF), anti-DNA and anti-cardiolipin (anti-CL) antibodies, and renal disease were analyzed in these and CD1d-deficient (CD1d°) BWF1 mice that we had previously generated. Results Whereas β2m° BWF1 mice had reduced serum IgG, they had increased mortality, nephritis, serum IgG anti-DNA antibody and RF as compared to heterozygous and wild-type littermates. These effects were recapitulated in CD1d° BWF1 mice, except that they also had increased serum IgG as compared to control littermates. Intriguingly, both β2m° and CD1d° mice had lower serum anti-CL antibody levels than in control littermates. Such CD1d dependence of anti-CL antibody production is not mediated by CD1d/glycolipid-reactive iNKT cells, as these cells reduced the production of RF and anti-DNA antibodies but had no effect on anti-CL antibodies. Conclusions We report a novel dichotomous role of β2m and CD1d, whereby these molecules differently regulate autoimmunity against phospholipid versus non-phospholipid autoantigens.
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18
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Role of MHC-linked susceptibility genes in the pathogenesis of human and murine lupus. Clin Dev Immunol 2012; 2012:584374. [PMID: 22761632 PMCID: PMC3385965 DOI: 10.1155/2012/584374] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Accepted: 05/07/2012] [Indexed: 02/08/2023]
Abstract
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease characterized by the production of autoantibodies against nuclear antigens and a systemic inflammation that can damage a broad spectrum of organs. SLE patients suffer from a wide variety of symptoms, which can affect virtually almost any tissue. As lupus is difficult to diagnose, the worldwide prevalence of SLE can only be roughly estimated to range from 10 and 200 cases per 100,000 individuals with dramatic differences depending on gender, ethnicity, and location. Although the treatment of this disease has been significantly ameliorated by new therapies, improved conventional drug therapy options, and a trained expert eye, the underlying pathogenesis of lupus still remain widely unknown. The complex etiology reflects the complex genetic background of the disease, which is also not well understood yet. However, in the past few years advances in lupus genetics have been made, notably with the publication of genome-wide association studies (GWAS) in humans and the identification of susceptibility genes and loci in mice. This paper reviews the role of MHC-linked susceptibility genes in the pathogenesis of systemic lupus erythematosus.
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Grammatikos AP, Tsokos GC. Immunodeficiency and autoimmunity: lessons from systemic lupus erythematosus. Trends Mol Med 2011; 18:101-8. [PMID: 22177735 DOI: 10.1016/j.molmed.2011.10.005] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Revised: 10/19/2011] [Accepted: 10/28/2011] [Indexed: 12/20/2022]
Abstract
Recent evidence suggests that systemic autoimmunity and immunodeficiency are not separate entities, but rather are interconnected processes. Immunodeficiency results from distinct defects of the immune response and primarily presents as infections but also frequently with autoimmune features. Systemic autoimmunity is the combined effect of multiple genetic variations and infectious and immunoregulatory factors that result in dominant autoimmune manifestations, in addition to frequent and opportunistic infections. The overlap in disease manifestations and symptoms suggests that immunodeficiency should be considered in the presence of autoimmunity, and vice versa. In this review, we present the shared or similar aspects of immunodeficiency and autoimmunity using systemic lupus erythematosus as a paradigm and discuss the implications for clinical care.
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Affiliation(s)
- Alexandros P Grammatikos
- Division of Rheumatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA.
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20
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Pollard KM, Hultman P, Toomey CB, Cauvi DM, Kono DH, Konoc DH. β2-microglobulin is required for the full expression of xenobiotic-induced systemic autoimmunity. J Immunotoxicol 2011; 8:228-37. [PMID: 21793797 DOI: 10.3109/1547691x.2011.583614] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Mercury exposure in both humans and mice is associated with features of systemic autoimmunity. Murine HgCl₂-induced autoimmunity (mHgIA) requires MHC Class II, CD4⁺ T-cells, co-stimulatory molecules, and interferon-γ (IFN-γ), similar to spontaneous models of systemic lupus erythematosus (SLE). β₂-microglobulin (B2m) is required for functional MHC Class I molecules and the neonatal F(c) receptor (F(c)Rn). Deficiency of B2m in lupus-prone strains is consistently associated with reduced IgG levels, but with variable effects on other manifestations. Herein, we examined the role of B2m in mHgIA and show that in the absence of B2m, mercury-exposed mice failed to exhibit hypergammaglobulinemia, had reduced anti-nucleolar autoantibodies (ANoA), and had a lower incidence of immune complex deposits in splenic blood vessels, whereas IgG anti-chromatin autoantibodies and renal immune deposits were largely unaffected. Subclass analysis of the IgG anti-chromatin, however, revealed a significant reduction in the IgG₁ subtype. Examination of IFNγ, IL-4, and IL-2 in exposed skin, draining lymph nodes, and spleen following mercury exposure showed reduced IL-4 in the spleen and skin in B2m-deficient mice, consistent with the lower IgG₁ anti-chromatin levels, and reduced IFNγ expression in the skin. These findings demonstrate how a single genetic alteration can partially but significantly modify the clinical manifestations of systemic autoimmunity induced by exposure to xenobiotics.
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Affiliation(s)
- Kenneth M Pollard
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA.
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21
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Kulkarni OP, Ryu M, Kantner C, Sárdy M, Naylor D, Lambert D, Brown R, Anders HJ. Recombinant chaperonin 10 suppresses cutaneous lupus and lupus nephritis in MRL-(Fas)lpr mice. Nephrol Dial Transplant 2011; 27:1358-67. [PMID: 21987536 DOI: 10.1093/ndt/gfr544] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Systemic lupus erythematosus (SLE) is still treated with global immunosuppressants with serious toxicities. We hypothesized that endogenous immunosuppressive molecules might be able to control SLE manifestations more specifically. Heat shock protein 10, or chaperonin 10 (Cpn10), is a secretory molecule that can suppress innate and adaptive immunity. METHODS Recombinant human Cpn10 (100 μg per mouse) was given intraperitoneally to healthy-appearing female MRL-(Fas)lpr mice from 12 to 22 weeks of age. At the age of 22 weeks, mice were analysed for treatment outcome by harvesting organs, plasma and urine. RESULTS Cpn10 entirely prevented cutaneous lupus lesions as compared to vehicle-treated mice. Cpn10 also suppressed lupus nephritis as evident from serum creatinine levels, albuminuria and the scores of disease activity and chronicity. Autoimmune lung disease was unaffected by Cpn10 treatment while overall survival of mice was prolonged. Cpn10 did not have any major effects on either dendritic cell or B-cell counts except T cells in spleen, plasma interferon-gamma, tumour necrosis factor-alpha, interleukin-10, anti-nuclear autoantibody levels or markers of lymphoproliferation. CONCLUSIONS In summary, recombinant Cpn10 selectively prevents cutaneous lupus and suppresses nephritis in MRL-(Fas)lpr mice without affecting the underlying systemic autoimmune process. Hence, Cpn10 might be useful for the treatment of skin and kidney manifestations of SLE.
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Affiliation(s)
- Onkar P Kulkarni
- Medizinische Poliklinik-Innenstadt, Department of Dermatology and Allergology, University of Munich, Munich, Germany
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McPhee CG, Sproule TJ, Shin DM, Bubier JA, Schott WH, Steinbuck MP, Avenesyan L, Morse HC, Roopenian DC. MHC class I family proteins retard systemic lupus erythematosus autoimmunity and B cell lymphomagenesis. THE JOURNAL OF IMMUNOLOGY 2011; 187:4695-704. [PMID: 21964024 DOI: 10.4049/jimmunol.1101776] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Dysregulation of the T cell-dependent Ab response can lead to numerous immunological disorders, ranging from systemic lupus erythematosus to B cell lymphomas. Cellular processes governed by MHC class II proteins play a major role in this response and its dysregulation. The extent to which processes controlled by the diverse family of MHC class I proteins impact such autoimmune and neoplastic disorders, however, is less clear. In this study, we genetically dissect the contributions of individual MHC class I family members and the pathological processes under their control in the systemic lupus erythematosus-like disease of BXSB.Yaa mice and B cell lymphomagenesis of SJL mice. This study reveals a powerful repressive regulatory axis comprised of MHC class I-dependent CD8(+) T cells and NK cells. These results indicate that the predominant role of the MHC class I protein family in such immunological disorders is to protect from more aggressive diseases.
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Cho YN, Kee SJ, Lee SJ, Seo SR, Kim TJ, Lee SS, Kim MS, Lee WW, Yoo DH, Kim N, Park YW. Numerical and functional deficiencies of natural killer T cells in systemic lupus erythematosus: their deficiency related to disease activity. Rheumatology (Oxford) 2011; 50:1054-63. [DOI: 10.1093/rheumatology/keq457] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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Kulkarni OP, Sayyed SG, Kantner C, Ryu M, Schnurr M, Sárdy M, Leban J, Jankowsky R, Ammendola A, Doblhofer R, Anders HJ. 4SC-101, a novel small molecule dihydroorotate dehydrogenase inhibitor, suppresses systemic lupus erythematosus in MRL-(Fas)lpr mice. THE AMERICAN JOURNAL OF PATHOLOGY 2010; 176:2840-7. [PMID: 20413687 DOI: 10.2353/ajpath.2010.091227] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Immunosuppressive treatments of systemic lupus (SLE) remain associated with significant toxicities; hence, compounds with better toxicity profiles are needed. Dihydroorotate dehydrogenase (DHODH) inhibition with leflunomide has proven to be effective in autoimmune diseases including SLE, but leflunomide can cause a variety of side effects. We hypothesized that 4SC-101, a novel DHODH inhibitor with a more favorable toxicity profile, would be as effective as high-dose cyclophosphamide (CYC) in controlling experimental SLE of female MRL(Fas)lpr mice. Daily oral gavage of 30, 100, and 300 mg/kg 4SC-101 from 12 to 22 weeks of age was compared with either vehicle or CYC treatment (30 mg/kg/week, i.p.) in terms of efficacy and toxicity. Three hundred milligrams per kilogram 4SC-101 was as effective as CYC in depleting spleen autoreactive T cells, B cells, and plasma cells as well as the respective DNA and RNA serum autoantibodies. This was associated with a comparable amelioration of the renal, dermal, and pulmonary SLE manifestations of MRL(Fas)lpr mice. However, even the highest dose of 4SC-101 had no effect on bone marrow neutrophil counts, which were significantly reduced in CYC-treated mice. Together, the novel DHODH inhibitor 4SC-101 is as effective as high dose CYC in controlling SLE without causing myelosuppression. Hence, DHODH inhibition with 4SC-101 might be suitable to treat active SLE with fewer side effects than CYC.
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Affiliation(s)
- Onkar P Kulkarni
- Medizinische Poliklinik-Innenstadt, University of Munich, Munich, Germany
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Racz Z, Nagy E, Rosivall L, Szebeni J, Hamar P. Sugar-free, glycine-stabilized intravenous immunoglobulin prevents skin but not renal disease in the MRL/lpr mouse model of systemic lupus. Lupus 2010; 19:599-612. [PMID: 20167630 DOI: 10.1177/0961203309355299] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Intravenous immunoglobulin (IVIG) has a therapeutic potential in many autoimmune diseases. Based on its immune modulating and complement inhibiting effects, IVIG has been tested in systemic lupus erythematosus (SLE), but due to osmotic tubular injury caused by immunoglobulin-stabilizing sugar components, lupus nephritis had been accelerated in some patients, thus IVIG use in SLE has been abandoned. The availability of non-sugar-stabilized IVIG raised the possible re-evaluation of IVIG for SLE. We investigated high-dose, long-term non-sugar-stabilized IVIG treatment on skin and renal SLE manifestations in the MRL/lpr mouse model. Animals were treated once a week with glycine-stabilized IVIG or saline (0.2 ml/ 10 g BW) from 6 weeks until they were humanely killed at 5 months of age. IVIG diminished macroscopic cutaneous lupus compared with saline treated mice. Histology and complement-3 immunostaining also demonstrated a significant reduction of skin disease after IVIG treatment. However, renal histology and function were similar in both groups. Compared with typical osmotic tubular damage induced by 5% sucrose and 10% maltose (used for IVIG stabilization), we did not observe any osmotic tubular injury in the glycine-stabilized IVIG treated mice. Our data demonstrate a beneficial effect of IVIG on skin lupus without renal side-effects. Deeper understanding of the organ-specific pathomechanism may aid an individualized SLE therapy.
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Affiliation(s)
- Z Racz
- Institute of Pathophysiology, Semmelweis Medical University, Nagyvarad ter 4., Budapest 1089, Hungary
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27
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Gabriel L, Morley BJ, Rogers NJ. The role of iNKT cells in the immunopathology of systemic lupus erythematosus. Ann N Y Acad Sci 2009; 1173:435-41. [PMID: 19758183 DOI: 10.1111/j.1749-6632.2009.04743.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An increasing body of evidence suggests that CD1d-restricted invariant natural killer T (iNKT) cells play an important immunoregulatory role in a variety of autoimmune diseases in both humans and mouse models. Their role in systemic lupus erythematosus (SLE), however, is not fully determined, as SLE mouse models have yielded conflicting results demonstrating both a protective function and a pathogenic role. The reduced frequency of iNKT cells in peripheral blood of lupus patients supports the idea of a protective role for these cells in the immunopathology of SLE. Therapeutic approaches using glycolipids provide a promising tool to correct numerical iNKT cell deficiencies and to modulate their function. This review highlights the potential role of iNKT cells in lupus immunopathology and summarizes recent studies concerning iNKT cells in SLE patients, lupus-prone murine models and glycolipid therapy.
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Affiliation(s)
- Luisa Gabriel
- Department of Immunology, Faculty of Medicine, Imperial College London, London, United Kingdom.
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Miyake S, Yamamura T. Therapeutic Potential of CD1d-Restricted Invariant Natural Killer T Cell–based Treatment for Autoimmune Diseases. Int Rev Immunol 2009; 26:73-94. [PMID: 17454265 DOI: 10.1080/08830180601070252] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
CD1d-restricted invariant natural killer T (iNKT) cells are a unique subset of T cells that recognize glycolipid antigens presented by the CD1d molecule. iNKT cells participate in various kinds of immunoregulation due to a potent ability to produce a variety of cytokines. Recent advances in studies of novel synthetic glycolipid ligands has led to new strategies to manipulate the pleiotropic functions of iNKT cells. The molecular mechanism of selective cytokine production by glycolipid ligands will be discussed. We will also focus on the possible therapeutic application of such ligands for the clinical treatment of various autoimmune diseases.
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Affiliation(s)
- Sachiko Miyake
- Department of Immunology, National Institute of Neuroscience, Kodaira, Tokyo, Japan
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Morshed SR, Takahashi T, Savage PB, Kambham N, Strober S. Beta-galactosylceramide alters invariant natural killer T cell function and is effective treatment for lupus. Clin Immunol 2009; 132:321-33. [PMID: 19564135 DOI: 10.1016/j.clim.2009.05.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2009] [Revised: 04/22/2009] [Accepted: 05/23/2009] [Indexed: 11/19/2022]
Abstract
NZB/W female mice spontaneously develop systemic lupus, an autoantibody mediated disease associated with immune complex glomerulonephritis. Natural killer (NK) T cells augment anti-dsDNA antibody secretion by NZB/W B cells in vitro, and blocking NKT cell activation in vivo with anti-CD1 mAb ameliorates lupus disease activity. In the current study, we show that beta-galactosylceramide reduces the in vivo induction of serum IFN-gamma and/or IL-4 by the potent NKT cell agonist alpha-galactosylceramide and reduces NKT cell helper activity for IgG secretion. Treatment of NZB/W mice with the beta-galactosylceramide ameliorated lupus disease activity as judged by improvement in proteinuria, renal histopathology, IgG anti-dsDNA antibody formation, and survival. In conclusion, beta-galactosylceramide, a glycolipid that reduces the cytokine secretion induced by a potent NKT cell agonist ameliorates lupus in NZB/W mice.
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MESH Headings
- Animals
- Antibodies, Antinuclear/blood
- Antigens, CD1d/immunology
- Antigens, CD1d/metabolism
- B-Lymphocytes/drug effects
- B-Lymphocytes/immunology
- B-Lymphocytes/metabolism
- Ceramides/immunology
- Ceramides/metabolism
- Ceramides/pharmacology
- Ceramides/therapeutic use
- Female
- Interferon-gamma/blood
- Interleukin-4/blood
- Kidney/drug effects
- Kidney/pathology
- Liver/immunology
- Lupus Erythematosus, Systemic/immunology
- Lupus Erythematosus, Systemic/pathology
- Lupus Erythematosus, Systemic/therapy
- Lupus Nephritis/immunology
- Lupus Nephritis/pathology
- Lupus Nephritis/therapy
- Mice
- Mice, Inbred C57BL
- Mice, Inbred NZB
- Monosaccharides/immunology
- Monosaccharides/metabolism
- Monosaccharides/pharmacology
- Monosaccharides/therapeutic use
- Natural Killer T-Cells/drug effects
- Natural Killer T-Cells/immunology
- Natural Killer T-Cells/metabolism
- Proteinuria/pathology
- Proteinuria/urine
- Receptors, Antigen, T-Cell/immunology
- Receptors, Antigen, T-Cell/metabolism
- Receptors, Antigen, T-Cell, alpha-beta/immunology
- Receptors, Antigen, T-Cell, alpha-beta/metabolism
- Spleen/immunology
- Survival Analysis
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Affiliation(s)
- Sufi R Morshed
- Department of Medicine, Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA 94305, USA
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Hong C, Lee H, Park YK, Shin J, Jung S, Kim H, Hong S, Park SH. Regulation of secondary antigen-specific CD8(+) T-cell responses by natural killer T cells. Cancer Res 2009; 69:4301-8. [PMID: 19401453 DOI: 10.1158/0008-5472.can-08-1721] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The physiologic function of natural killer T (NKT) cells in adaptive immunity remains largely unknown because most studies have used NKT cell agonists. In the present study, the role of NKT cells during the secondary effector phase was investigated separately from the primary immunization phase via adoptive transfer of differentiated effector T cells into naive recipients. We found that secondary antitumor CD8(+) T-cell responses were optimal when NKT cells were present. Tumor-specific CD8(+) effector T cells responded less strongly to tumor cell challenge in NKT cell-deficient recipients than in recipients with intact NKT cells. NKT cell-mediated enhancement of the secondary antitumor CD8(+) T-cell response was concurrent with increased number and activity of tumor-specific CD8(+) T cells. These findings provide the first demonstration of a direct role for NKT cells in the regulation of antigen-specific secondary T-cell responses without the use of exogenous NKT cell agonists such as alpha-galactosylceramide (alpha-GalCer). Furthermore, forced activation of NKT cells with alpha-GalCer during the secondary immune response in suboptimally immunized animals enhanced otherwise poor tumor rejection responses. Taken together, our findings strongly emphasize the importance of NKT cells in secondary CD8(+) T-cell immune responses.
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Affiliation(s)
- Changwan Hong
- School of Life Sciences and Biotechnology, Korea University, Sungbukku Anamdong, Seoul, Korea
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31
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Menke J, Hsu MY, Byrne KT, Lucas JA, Rabacal WA, Croker BP, Zong XH, Stanley ER, Kelley VR. Sunlight triggers cutaneous lupus through a CSF-1-dependent mechanism in MRL-Fas(lpr) mice. THE JOURNAL OF IMMUNOLOGY 2008; 181:7367-79. [PMID: 18981160 DOI: 10.4049/jimmunol.181.10.7367] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Sunlight (UVB) triggers cutaneous lupus erythematosus (CLE) and systemic lupus through an unknown mechanism. We tested the hypothesis that UVB triggers CLE through a CSF-1-dependent, macrophage (Mø)-mediated mechanism in MRL-Fas(lpr) mice. By constructing mutant MRL-Fas(lpr) strains expressing varying levels of CSF-1 (high, intermediate, none), and use of an ex vivo gene transfer to deliver CSF-1 intradermally, we determined that CSF-1 induces CLE in lupus-susceptible MRL-Fas(lpr) mice, but not in lupus-resistant BALB/c mice. UVB incites an increase in Møs, apoptosis in the skin, and CLE in MRL-Fas(lpr), but not in CSF-1-deficient MRL-Fas(lpr) mice. Furthermore, UVB did not induce CLE in BALB/c mice. Probing further, UVB stimulates CSF-1 expression by keratinocytes leading to recruitment and activation of Møs that, in turn, release mediators, which induce apoptosis in keratinocytes. Thus, sunlight triggers a CSF-1-dependent, Mø-mediated destructive inflammation in the skin leading to CLE in lupus-susceptible MRL-Fas(lpr) but not lupus-resistant BALB/c mice. Taken together, CSF-1 is envisioned as the match and lupus susceptibility as the tinder leading to CLE.
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Affiliation(s)
- Julia Menke
- Laboratory of Molecular Autoimmune Disease, Renal Division, Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA
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32
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Yang CH, Tian L, Ling GS, Trendell-Smith NJ, Ma L, Lo CK, Stott DI, Liew FY, Huang FP. Immunological mechanisms and clinical implications of regulatory T cell deficiency in a systemic autoimmune disorder: roles of IL-2 versus IL-15. Eur J Immunol 2008; 38:1664-76. [PMID: 18465774 DOI: 10.1002/eji.200838190] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Regulatory T cell deficiency is evident in patients with lupus, but the casual [corrected] relationship and underlying mechanism leading to Treg deficiency are unclear. We analyzed the Treg profile, induction and functions of Treg in a lupus mouse model. A characteristic age-dependent biphasic change of Treg frequency was observed in the MRL/lpr mice, which developed a spontaneous lupus-like disease. After an early increase, Treg frequency in the peripheral lymphoid organs rapidly declined with age. Functionally, Treg from both young and old MRL/lpr mice were fully competent in suppressing the wild-type MRL/+ T effector cell (Teff) responses. Adoptive transfer of MRL/+ Treg markedly suppressed clinical disease in the MRL/lpr mice. We demonstrated that the reduced Treg frequency was a result of insufficient peripheral Treg expansion due to defective MRL/lpr Teff in IL-2 production, and the associated defects in dendritic cells, which could be fully restored by exogenous IL-2. In the absence of IL-2, MRL/lpr Teff but not MRL/lpr Treg were highly responsive to IL-15 and could expand rapidly due to enhanced IL-15R expression and IL-15 synthesis. These findings thus provide a clear causal relationship and immunological mechanism underlying Treg deficiency and systemic autoimmunity.
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Affiliation(s)
- Cui-Hong Yang
- Department of Pathology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, China
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Benoît LA, Tan R. Xenogeneic β2-Microglobulin Substitution Alters NK Cell Function. THE JOURNAL OF IMMUNOLOGY 2007; 179:1466-74. [PMID: 17641012 DOI: 10.4049/jimmunol.179.3.1466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Recently, it has been shown that human beta(2)-microglobulin (h-beta(2)m) blocks the association between the NK cell inhibitory receptor Ly49C and H-2K(b). Given this finding, we therefore sought to assess the immunobiology of NK cells derived from C57BL/6 (H-2(b)) mice expressing exclusively h-beta(2)m. Initial analysis revealed that the Ly49C expression profile of NK cells from h-beta(2)m(+) mice was modified, despite the fact that H-2K(b) expression was normal in these mice. Moreover, the NK cells were not anergic in that IL-2 treatment of h-beta(2)m(+) NK cells in vitro enabled efficient lysis of prototypic tumor cell lines as well as of syngeneic h-beta(2)m(+) lymphoblasts. This loss of self-tolerance appeared to correlate with the activation status of h-beta(2)m(+) NK cells because quiescent h-beta(2)m(+) transplant recipients maintained h-beta(2)m(+) grafts but polyinosine:polycytidylic acid-treated recipients acutely rejected h-beta(2)m(+) grafts. NK cell reactivity toward h-beta(2)m(+) targets was attributed to defective Ly49C interactions with h-beta(2)m:H-2K(b) molecules. With regard to NK cell regulatory mechanisms, we observed that h-beta(2)m:H-2K(b) complexes in the cis-configuration were inefficient at regulating Ly49C and, furthermore, that receptor-mediated uptake of h-beta(2)m:H-2K(b) by Ly49C was impaired compared with uptake of mouse beta(2)m:H-2K(b). Thus, we conclude that transgenic expression of h-beta(2)m alters self-MHC class I in such a way that it modulates the NK cell phenotype and interferes with regulatory mechanisms, which in turn causes in vitro-expanded and polyinosine:polycytidylic acid-activated NK cells to be partially self-reactive similar to what is seen with NK cells derived from MHC class I-deficient mice.
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MESH Headings
- Animals
- Cell Line, Tumor
- Cytotoxicity, Immunologic/genetics
- Female
- Graft Rejection/genetics
- Graft Rejection/immunology
- H-2 Antigens/genetics
- H-2 Antigens/immunology
- Humans
- Immunophenotyping
- Killer Cells, Lymphokine-Activated/immunology
- Killer Cells, Lymphokine-Activated/metabolism
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Killer Cells, Natural/transplantation
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Transgenic
- Self Tolerance/genetics
- Self Tolerance/immunology
- beta 2-Microglobulin/biosynthesis
- beta 2-Microglobulin/deficiency
- beta 2-Microglobulin/genetics
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Affiliation(s)
- Loralyn A Benoît
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
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Vinay DS, Choi JH, Kim JD, Choi BK, Kwon BS. Role of endogenous 4-1BB in the development of systemic lupus erythematosus. Immunology 2007; 122:394-400. [PMID: 17608689 PMCID: PMC2266025 DOI: 10.1111/j.1365-2567.2007.02653.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is characterized by the production of autoantibodies directed against nuclear antigens including nucleosomes and DNA. To determine the role of T-cell costimulatory molecule 4-1BB in the regulation of SLE, MRL-Fas(lpr) (lpr) mice deficient in 4-1BB (lpr/4-1BB(-/-)) were generated and their disease phenotype was compared to that of control lpr mice. The main finding of this study is that the lpr/4-1BB(-/-) mice had more pronounced skin lesions which appeared earlier, increased lymphadenopathy, increased renal damage, and higher mortality than 4-1BB-intact control lpr mice. The increased severity of lesions in lpr/4-1BB(-/-) mice was closely associated with increases in CD4(+) T, CD3(+) B220(+) double-negative T cells, serum immunoglobulin, anti-dsDNA autoantibodies, and tissue immunoglobulin deposits. These data suggest that the 4-1BB-4-1BB ligand signalling pathway plays an important role in SLE and that deletion of 4-1BB confers susceptibility to lpr mice, leading to accelerated induction of disease and early mortality.
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Affiliation(s)
- Dass S Vinay
- LSU Eye Center, Louisiana State University Health Sciences Center School of Medicine, New Orleans, LA, USA
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35
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Abstract
Recognized more than a decade ago, NKT cells differentiate from mainstream thymic precursors through instructive signals emanating during TCR engagement by CD1d-expressing cortical thymocytes. Their semi-invariant alphabeta TCRs recognize isoglobotrihexosylceramide, a mammalian glycosphingolipid, as well as microbial alpha-glycuronylceramides found in the cell wall of Gram-negative, lipopolysaccharide-negative bacteria. This dual recognition of self and microbial ligands underlies innate-like antimicrobial functions mediated by CD40L induction and massive Th1 and Th2 cytokine and chemokine release. Through reciprocal activation of NKT cells and dendritic cells, synthetic NKT ligands constitute promising new vaccine adjuvants. NKT cells also regulate a range of immunopathological conditions, but the mechanisms and the ligands involved remain unknown. NKT cell biology has emerged as a new field of research at the frontier between innate and adaptive immunity, providing a powerful model to study fundamental aspects of the cell and structural biology of glycolipid trafficking, processing, and recognition.
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MESH Headings
- Adjuvants, Immunologic/pharmacology
- Animals
- Antigen Presentation/immunology
- Antigens, Bacterial/immunology
- Antigens, CD1/immunology
- Antigens, CD1d
- Autoantigens/immunology
- Bacterial Vaccines/immunology
- Bacterial Vaccines/pharmacology
- CD40 Ligand/immunology
- Chemokines/immunology
- Dendritic Cells/immunology
- Globosides/immunology
- Glucosylceramides/immunology
- Gram-Negative Bacteria/immunology
- Gram-Negative Bacterial Infections/immunology
- Humans
- Immunity, Innate
- Killer Cells, Natural/immunology
- Lymphocyte Activation/immunology
- Models, Immunological
- Receptors, Antigen, T-Cell, alpha-beta/immunology
- Th1 Cells/immunology
- Th2 Cells/immunology
- Trihexosylceramides/immunology
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Affiliation(s)
- Albert Bendelac
- Howard Hughes Medical Institute, Committee on Immunology, Department of Pathology University of Chicago, Chicago, Illinois 60637, USA.
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36
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Yang JQ, Wen X, Liu H, Folayan G, Dong X, Zhou M, Van Kaer L, Singh RR. Examining the role of CD1d and natural killer T cells in the development of nephritis in a genetically susceptible lupus model. ACTA ACUST UNITED AC 2007; 56:1219-33. [PMID: 17393451 PMCID: PMC2291538 DOI: 10.1002/art.22490] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVE CD1d-reactive invariant natural killer T (iNKT) cells secrete multiple cytokines upon T cell receptor (TCR) engagement and modulate many immune-mediated conditions. The purpose of this study was to examine the role of these cells in the development of autoimmune disease in genetically lupus-prone (NZBxNZW)F1 (BWF1) mice. METHODS The CD1d1-null genotype was crossed onto the NZB and NZW backgrounds to establish CD1d1-knockout (CD1d0) BWF1 mice. CD1d0 mice and their wild-type littermates were monitored for the development of nephritis and assessed for cytokine responses to CD1d-restricted glycolipid alpha-galactosylceramide (alphaGalCer), anti-CD3 antibody, and concanavalin A (Con A). Thymus and spleen cells were stained with CD1d tetramers that had been loaded with alphaGalCer or its analog PBS-57 to detect iNKT cells, and the cells were compared between BWF1 mice and class II major histocompatibility complex-matched nonautoimmune strains, including BALB/c, (BALB/cxNZW)F1 (CWF1), and NZW. RESULTS CD1d0 BWF1 mice had more severe nephritis than did their wild-type littermates. Although iNKT cells and iNKT cell responses were absent in CD1d0 BWF1 mice, the CD1d0 mice continued to have significant numbers of interferon-gamma-producing NKT-like (CD1d-independent TCRbeta+,NK1.1+ and/or DX5+) cells. CD1d deficiency also influenced cytokine responses by conventional T cells: upon in vitro stimulation of splenocytes with Con A or anti-CD3, type 2 cytokine levels were reduced, whereas type 1 cytokine levels were increased or unchanged in CD1d0 mice as compared with their wild-type littermates. Additionally, numbers of thymic iNKT cells were lower in young wild-type BWF1 mice than in nonautoimmune strains. CONCLUSION Germline deletion of CD1d exacerbates lupus in BWF1 mice. This finding, together with reduced thymic iNKT cells in young BWF1 mice as compared with nonautoimmune strains, implies a regulatory role of CD1d and iNKT cells during the development of lupus.
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MESH Headings
- Animals
- Antigens, CD1/genetics
- Antigens, CD1/immunology
- Antigens, CD1d
- Cells, Cultured
- Disease Models, Animal
- Galactosylceramides/pharmacology
- Gene Silencing
- Genetic Predisposition to Disease
- Interferon-gamma/metabolism
- Killer Cells, Natural/drug effects
- Killer Cells, Natural/immunology
- Killer Cells, Natural/pathology
- Lupus Erythematosus, Systemic/genetics
- Lupus Nephritis/genetics
- Lupus Nephritis/immunology
- Lupus Nephritis/pathology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred NZB
- Mice, Knockout
- Spleen/drug effects
- Spleen/metabolism
- Spleen/pathology
- T-Lymphocytes/immunology
- T-Lymphocytes/pathology
- Thymus Gland/metabolism
- Thymus Gland/pathology
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Affiliation(s)
- Jun-Qi Yang
- Jun-Qi Yang, PhD, Hongzhu Liu, MD: University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Xiangshu Wen
- Xiangshu Wen, PhD, Gbolahan Folayan, BS, Xin Dong, PhD, Min Zhou, MD: David Geffen School of Medicine, University of California, Los Angeles
| | - Hongzhu Liu
- Jun-Qi Yang, PhD, Hongzhu Liu, MD: University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Gbolahan Folayan
- Xiangshu Wen, PhD, Gbolahan Folayan, BS, Xin Dong, PhD, Min Zhou, MD: David Geffen School of Medicine, University of California, Los Angeles
| | - Xin Dong
- Xiangshu Wen, PhD, Gbolahan Folayan, BS, Xin Dong, PhD, Min Zhou, MD: David Geffen School of Medicine, University of California, Los Angeles
| | - Min Zhou
- Xiangshu Wen, PhD, Gbolahan Folayan, BS, Xin Dong, PhD, Min Zhou, MD: David Geffen School of Medicine, University of California, Los Angeles
| | - Luc Van Kaer
- Luc Van Kaer, PhD: Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Ram Raj Singh
- Ram Raj Singh, MD: Jonsson Comprehensive Cancer Center, and David Geffen School of Medicine, University of California, Los Angeles
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37
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Abstract
CDld-restricted invariant natural killer T (NKT) cells emerge as unique lymphocyte subsets implicated in the regulation of autoimmunity. Abnormalities in the numbers and functions of NKT cells have been observed in patients with diverse autoimmune diseases as well as in animal models of autoimmune diseases. NKT cells recognize glycolipid antigens presented by the nonpolymorphic MHC class I-like protein CD1d and participate in various kinds of immunoregulation due to a potent ability to produce a variety of cytokines. In this review, we examine the potential roles of NKT cells in the regulation and pathogenesis of autoimmune disease and the recent advances in glycolipid therapy for autoimmune disease models.
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MESH Headings
- Animals
- Arthritis, Experimental/immunology
- Arthritis, Experimental/physiopathology
- Autoimmune Diseases/immunology
- Autoimmune Diseases/physiopathology
- Autoimmunity
- Colitis/immunology
- Colitis/physiopathology
- Diabetes Mellitus, Type 1/immunology
- Diabetes Mellitus, Type 1/physiopathology
- Disease Models, Animal
- Encephalomyelitis, Autoimmune, Experimental/immunology
- Encephalomyelitis, Autoimmune, Experimental/physiopathology
- Humans
- Killer Cells, Natural/immunology
- Lupus Erythematosus, Systemic/immunology
- Lupus Erythematosus, Systemic/physiopathology
- Mice
- Mice, Inbred BALB C
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Affiliation(s)
- S Miyake
- Department of Immunology, National Institute of Neuroscience, NCNP, 4-1-1, Ogawahigashi, Kodaira, 187-8502 Tokyo, Japan.
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38
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Abstract
T and B lymphocytes play diverse roles at multiple stages in the development and progression of lupus nephritis. Disruption of T- and B-cell regulatory functions by environmental and genetic influences permits pathogenic effectors to emerge in disease. New insights into the biology of these multifunctional cells offer novel targets for intervention in lupus nephritis and systemic autoimmunity.
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Affiliation(s)
- Mary H Foster
- Department of Medicine, Division of Nephrology, Duke University Medical Center, Durham, NC 27710, USA.
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Sireci G, Russo D, Dieli F, Porcelli SA, Taniguchi M, La Manna MP, Di Liberto D, Scarpa F, Salerno A. Immunoregulatory role of Jalpha281 T cells in aged mice developing lupus-like nephritis. Eur J Immunol 2007; 37:425-33. [PMID: 17273990 DOI: 10.1002/eji.200636695] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by the emergence of autoreactive T cells. Humans and mice with SLE have reduced numbers of CD1d-restricted invariant natural killer T (iNKT) cells, suggesting a key role for these cells in its immunopathogenesis. This subset uses an invariant TCR constituted by Valpha14 Jalpha281 chains paired with some Vbeta domains. The regulatory role for iNKT cells in non-autoimmune mice was suggested by our previous results showing that aged Jalpha281 knockout (KO) mice produce anti-dsDNA. Here we show that old Jalpha281 KO mice have proteinuria and antibodies against dsDNA and cardiolipin. Histological analysis of Jalpha281 KO mice revealed glomeruli damage and deposition of C3c and IgG, mainly of the IgG3 subclass. In spleens of aged Jalpha281 KO mice there is an increase of activated marginal zone B cells. The evolution of lesions may depend on the age-associated increase of autoantibodies production, preferentially IgG3, mainly secreted by marginal zone B cells. Our results provide the first evidence of a lupus-like syndrome in non-autoimmune mice, supporting an age-related immunoregulatory role of Jalpha281+ cells, probably associated with the activation of marginal zone B cells.
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Affiliation(s)
- Guido Sireci
- Dipartimento di Biopatologia e Metodologie Biomediche, Università di Palermo, Palermo, Italy.
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40
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Choi JY, Gao W, Odegard J, Shiah HS, Kashgarian M, McNiff JM, Baker DC, Cheng YC, Craft J. Abrogation of skin disease in LUPUS-prone MRL/FASlpr mice by means of a novel tylophorine analog. ACTA ACUST UNITED AC 2006; 54:3277-83. [PMID: 17009262 DOI: 10.1002/art.22119] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To test the therapeutic effect of DCB-3503, a synthetic compound derived from a natural product that inhibits NF-kappaB, on end-organ disease in the MRL-Fas(lpr) murine model of systemic lupus erythematosus (SLE). METHODS Eight-week-old female MRL/Fas(lpr) mice were treated intraperitoneally with a low (2 mg/kg) or high (6 mg/kg) dose of DCB-3503 for 10 weeks. Control groups were administered vehicle treatment alone (negative control) or 25 mg/kg cyclophosphamide (positive control). Mice were bled before (8 weeks) and during (13 weeks) treatment, and when they were killed (20 weeks), and serum samples were analyzed for total IgM and IgG levels and autoantibody titers. When the mice were killed, spleen and lymph nodes (axillary, brachial, and cervical) were examined by flow cytometric analysis. The presence of skin and renal disease was determined by histopathologic analysis. RESULTS DCB-3503 reduced anti-double-stranded DNA and antichromatin autoantibodies and nearly abrogated inflammatory skin disease in MRL/Fas(lpr) mice; however, it had little effect on histologic kidney disease. Treated mice did not have hematologic or hepatic toxicity. These data indicate that end-organ disease in MRL/Fas(lpr) mice responds differentially to NF-kappaB inhibitor. CONCLUSION DCB-3503 causes significant abrogation of skin disease in MRL/Fas(lpr) mice and may potentially be beneficial in the treatment of inflammatory skin disease in SLE.
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Affiliation(s)
- Jin-Young Choi
- Yale School of Medicine, Yale University, New Haven, Connecticut, USA
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41
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Yu KOA, Porcelli SA. The diverse functions of CD1d-restricted NKT cells and their potential for immunotherapy. Immunol Lett 2005; 100:42-55. [PMID: 16083968 DOI: 10.1016/j.imlet.2005.06.010] [Citation(s) in RCA: 111] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2005] [Revised: 06/07/2005] [Accepted: 06/24/2005] [Indexed: 01/12/2023]
Abstract
CD1d-restricted NKT cells have been identified as an important component of the immune system that have the capacity both to augment beneficial host immunity and to prevent harmful autoimmunity. These cells have the ability to produce a wide variety of cytokines, including both proinflammatory and antiinflammatory cytokines that can have multiple different effects on the outcome of immune reactions. The discovery that these T cells are activated by specific recognition of glycolipids in the glycosylceramide family has led to new approaches to manipulate the pleiotropic functions of these cells. Here, we review the multiple activities that have been attributed to NKT cells in a variety of different disease models, and the current state of our understanding of the mechanisms that control the functional outcome of NKT cell activation.
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Affiliation(s)
- Karl O A Yu
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
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42
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Katsiari CG, Tsokos GC. Re-establishment of tolerance: the prospect of developing specific treatment for human lupus. Lupus 2005; 13:485-8. [PMID: 15352417 DOI: 10.1191/0961203304lu1078ed] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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43
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Godfrey DI, Kronenberg M. Going both ways: immune regulation via CD1d-dependent NKT cells. J Clin Invest 2004; 114:1379-88. [PMID: 15545985 PMCID: PMC525753 DOI: 10.1172/jci23594] [Citation(s) in RCA: 287] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
NKT cells are a unique T lymphocyte sublineage that has been implicated in the regulation of immune responses associated with a broad range of diseases, including autoimmunity, infectious diseases, and cancer. In stark contrast to both conventional T lymphocytes and other types of Tregs, NKT cells are reactive to the nonclassical class I antigen-presenting molecule CD1d, and they recognize glycolipid antigens rather than peptides. Moreover, they can either up- or downregulate immune responses by promoting the secretion of Th1, Th2, or immune regulatory cytokines. This review will explore the diverse influences of these cells in various disease models, their ability to suppress or enhance immunity, and the potential for manipulating these cells as a novel form of immunotherapy.
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Affiliation(s)
- Dale I Godfrey
- Department of Microbiology and Immunology, University of Melbourne, Parkville, Victoria, Australia.
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Godfrey DI, Kronenberg M. Going both ways: immune regulation via CD1d-dependent NKT cells. J Clin Invest 2004. [PMID: 15545985 DOI: 10.1172/jci200423594] [Citation(s) in RCA: 601] [Impact Index Per Article: 30.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
NKT cells are a unique T lymphocyte sublineage that has been implicated in the regulation of immune responses associated with a broad range of diseases, including autoimmunity, infectious diseases, and cancer. In stark contrast to both conventional T lymphocytes and other types of Tregs, NKT cells are reactive to the nonclassical class I antigen-presenting molecule CD1d, and they recognize glycolipid antigens rather than peptides. Moreover, they can either up- or downregulate immune responses by promoting the secretion of Th1, Th2, or immune regulatory cytokines. This review will explore the diverse influences of these cells in various disease models, their ability to suppress or enhance immunity, and the potential for manipulating these cells as a novel form of immunotherapy.
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Affiliation(s)
- Dale I Godfrey
- Department of Microbiology and Immunology, University of Melbourne, Parkville, Victoria, Australia.
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van der Vliet HJJ, Molling JW, von Blomberg BME, Nishi N, Kölgen W, van den Eertwegh AJM, Pinedo HM, Giaccone G, Scheper RJ. The immunoregulatory role of CD1d-restricted natural killer T cells in disease. Clin Immunol 2004; 112:8-23. [PMID: 15207777 DOI: 10.1016/j.clim.2004.03.003] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2004] [Accepted: 03/02/2004] [Indexed: 12/22/2022]
Abstract
Natural killer T (NKT) cells constitute a T cell subpopulation that shares several characteristics with NK cells. NKT cells are characterized by a narrow T cell antigen receptor (TCR) repertoire, recognize glycolipid antigen in the context of the monomorphic CD1d antigen-presenting molecule, and have the unique capacity to rapidly produce large amounts of both T helper (Th) 1 and Th2 cytokines. Important roles of NKT cells have now been demonstrated in the regulation of autoimmune, allergic, antimicrobial, and antitumor immune responses. Here, we review the immunoregulatory role of NKT cells in disease and discuss NKT cell based immunotherapeutic strategies.
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Affiliation(s)
- Hans J J van der Vliet
- The Departments of Pathology, Vrije Universiteit Medisch Centrum, Amsterdam, The Netherlands
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Abstract
This review summarizes the major features of CD1 genes and proteins, the patterns of intracellular trafficking of CD1 molecules, and how they sample different intracellular compartments for self- and foreign lipids. We describe how lipid antigens bind to CD1 molecules with their alkyl chains buried in hydrophobic pockets and expose their polar lipid headgroup whose fine structure is recognized by the TCR of CD1-restricted T cells. CD1-restricted T cells carry out effector, helper, and adjuvant-like functions and interact with other cell types including macrophages, dendritic cells, NK cells, T cells, and B cells, thereby contributing to both innate and adaptive immune responses. Insights gained from mice and humans now delineate the extensive range of diseases in which CD1-restricted T cells play important roles and reveal differences in the role of CD1a, CD1b, and CD1c in contrast to CD1d. Invariant TCR alpha chains, self-lipid reactivity, and rapid effector responses empower a subset of CD1d-restricted T cells (NKT cells) to have unique effector functions without counterpart among MHC-restricted T cells. This review describes the function of CD1-restricted T cells in antimicrobial responses, antitumor immunity, and in regulating the balance between tolerance and autoimmunity.
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Affiliation(s)
- Manfred Brigl
- Division of Rheumatology, Immunology, and Allergy, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA.
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Bagavant H, Deshmukh US, Gaskin F, Fu SM. Lupus Glomerulonephritis Revisited 2004: Autoimmunity and End-Organ Damage. Scand J Immunol 2004; 60:52-63. [PMID: 15238073 DOI: 10.1111/j.0300-9475.2004.01463.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Histopathology of the kidney and clinical presentation are critical factors in the diagnosis of immune-mediated glomerulonephritis (GN). The histological manifestations of glomerular injury are shared by multiple underlying mechanisms. Work from our laboratory and from other investigators shows that antinuclear, antihistone or anti-dsDNA antibodies are neither required nor sufficient for development of lupus GN. In addition, antibody to dsDNA can be generated by mechanisms other than loss of tolerance to chromatin. Genetic analyses demonstrate that although there is some interaction between autoantibody production and renal disease, the phenotypes are regulated by distinct genetic intervals. Furthermore, renal failure is not an essential outcome of the immune-complex deposition and proliferative lupus GN. These data are also supported by published studies from systemic lupus erythematosus (SLE) patients. The immune regulation of lupus GN is distinct from other organ-specific diseases and not influenced by CD25(+) or NK1.1(+) regulatory T cells. Thus, fatal GN may depend upon a kidney-reactive T-cell response that, in turn, may be regulated by gender and intrinsic end-organ factors. The data discussed in this review call for a re-evaluation of the current paradigms for pathogenesis of SLE. An interactive model separating autoimmunity from end-organ susceptibility for the pathogenesis of SLE is proposed.
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Affiliation(s)
- H Bagavant
- The University of Virginia Specialized Center of Research on Systemic Lupus Erythematosus, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
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Yang JQ, Chun T, Liu H, Hong S, Bui H, Van Kaer L, Wang CR, Singh RR. CD1d deficiency exacerbates inflammatory dermatitis in MRL-lpr/lpr mice. Eur J Immunol 2004; 34:1723-32. [PMID: 15162443 PMCID: PMC2291526 DOI: 10.1002/eji.200324099] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Mechanisms responsible for the development of autoimmune skin disease in humans and animal models with lupus remain poorly understood. In this study, we have investigated the role of CD1d, an antigen-presenting molecule known to activate natural killer T cells, in the development of inflammatory dermatitis in lupus-susceptible MRL-lpr/lpr mice. In particular, we have established MRL-lpr/lpr mice carrying a germ-line deletion of the CD1d genes. We demonstrate that CD1d-deficient MRL-lpr/lpr mice, as compared with wild-type littermates, have more frequent and more severe skin disease, with increased local infiltration with mast cells, lymphocytes and dendritic cells, including Langerhans cells. CD1d-deficient MRL-lpr/lpr mice had increased prevalence of CD4(+) T cells in the spleen and liver and of TCR alpha beta (+)B220(+) cells in lymph nodes. Furthermore, CD1d deficiency was associated with decreased T cell production of type 2 cytokines and increased or unchanged type 1 cytokines. These findings indicate a regulatory role of CD1d in inflammatory dermatitis. Understanding the mechanisms by which CD1d deficiency results in splenic T cell expansion and cytokine alterations, with increased dermal infiltration of dendritic cells and lymphocytes in MRL-lpr/lpr mice, will have implications for the pathogenesis of inflammatory skin diseases.
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Affiliation(s)
- Jun-Qi Yang
- Autoimmunity and Tolerance Laboratory, Department of Internal Medicine, University of Cincinnati, Cincinnati, USA
- Veterans Affairs Medical Center, Cincinnati, USA
| | - Taehoon Chun
- Gwen Knapp Center, University of Chicago, Chicago, USA
| | - Hongzhu Liu
- Autoimmunity and Tolerance Laboratory, Department of Internal Medicine, University of Cincinnati, Cincinnati, USA
| | - Seokmann Hong
- Department of Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, USA
| | - Hai Bui
- Autoimmunity and Tolerance Laboratory, Department of Internal Medicine, University of Cincinnati, Cincinnati, USA
- Veterans Affairs Medical Center, Cincinnati, USA
| | - Luc Van Kaer
- Department of Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, USA
| | | | - Ram Raj Singh
- Autoimmunity and Tolerance Laboratory, Department of Internal Medicine, University of Cincinnati, Cincinnati, USA
- Veterans Affairs Medical Center, Cincinnati, USA
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Akilesh S, Petkova S, Sproule TJ, Shaffer DJ, Christianson GJ, Roopenian D. The MHC class I-like Fc receptor promotes humorally mediated autoimmune disease. J Clin Invest 2004; 113:1328-33. [PMID: 15124024 PMCID: PMC398424 DOI: 10.1172/jci18838] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2003] [Accepted: 03/02/2004] [Indexed: 11/17/2022] Open
Abstract
The MHC class I family-like Fc receptor, FcRn, is normally responsible for extending the life span of serum IgG Ab's, but whether this molecule contributes to autoimmune pathogenesis remains speculative. To determine directly whether this function contributes to humoral autoimmune disease, we examined whether a deficiency in the FcRn heavy chain influences autoimmune arthritis in the K/BxN mouse model. FcRn deficiency conferred either partial or complete protection in the arthritogenic serum transfer and the more aggressive genetically determined K/BxN autoimmune arthritis models. The protective effects of an FcRn deficiency could be overridden with excessive amounts of pathogenic IgG Ab's. The therapeutic saturation of FcRn by high-dose intravenous IgG (IVIg) also ameliorated arthritis, directly implicating FcRn blockade as a significant mechanism of IVIg's anti-inflammatory action. The results suggest that FcRn is a potential therapeutic target that links the initiation and effector phases of humoral autoimmune disease.
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MESH Headings
- Animals
- Antibodies/blood
- Antibodies/metabolism
- Arthritis, Rheumatoid/etiology
- Arthritis, Rheumatoid/genetics
- Arthritis, Rheumatoid/immunology
- Arthritis, Rheumatoid/pathology
- Autoimmune Diseases/etiology
- Autoimmune Diseases/genetics
- Autoimmune Diseases/immunology
- Autoimmune Diseases/pathology
- Disease Models, Animal
- Dose-Response Relationship, Immunologic
- Extremities/pathology
- Female
- Gene Expression Profiling
- Heterozygote
- Histocompatibility Antigens Class I/immunology
- Humans
- Immunoglobulin G/administration & dosage
- Immunoglobulin G/blood
- Immunoglobulin G/metabolism
- Immunoglobulin G/pharmacology
- Immunoglobulin G/therapeutic use
- Injections, Intraperitoneal
- Injections, Intravenous
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Inbred NOD
- Mice, Knockout
- Mice, Transgenic
- Receptors, Fc/deficiency
- Receptors, Fc/genetics
- Receptors, Fc/metabolism
- Serum/metabolism
- Transgenes
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