scholarly journals Growth Differentiation Factor 15 Ameliorates Anti-Glomerular Basement Membrane Glomerulonephritis in Mice

2020 ◽  
Vol 21 (19) ◽  
pp. 6978
Author(s):  
Foteini Moschovaki-Filippidou ◽  
Stefanie Steiger ◽  
Georg Lorenz ◽  
Christoph Schmaderer ◽  
Andrea Ribeiro ◽  
...  
Keyword(s):  
T Cells ◽  
Basement Membrane ◽  
Glomerular Basement Membrane ◽  
Transforming Growth Factor ◽  
Protective Effects ◽  
Crescent Formation ◽  
Activated T Cells ◽  
Growth Differentiation Factor 15 ◽  
Differentiation Factor ◽  
Deficient Mice

Growth differentiation factor 15 (GDF15) is a member of the transforming growth factor-β (TGF-β) cytokine family and an inflammation-associated protein. Here, we investigated the role of GDF15 in murine anti-glomerular basement membrane (GBM) glomerulonephritis. Glomerulonephritis induction in mice induced systemic expression of GDF15. Moreover, we demonstrate the protective effects for GDF15, as GDF15-deficient mice exhibited increased proteinuria with an aggravated crescent formation and mesangial expansion in anti-GBM nephritis. Herein, GDF15 was required for the regulation of T-cell chemotactic chemokines in the kidney. In addition, we found the upregulation of the CXCR3 receptor in activated T-cells in GDF15-deficient mice. These data indicate that CXCL10/CXCR3-dependent-signaling promotes the infiltration of T cells into the organ during acute inflammation controlled by GDF15. Together, these results reveal a novel mechanism limiting the migration of lymphocytes to the site of inflammation during glomerulonephritis.

scholarly journals Oral Administration of Glomerular Basement Membrane Prevents the Development of Experimental Autoimmune Glomerulonephritis in the WKY Rat

2001 ◽  
Vol 12 (1) ◽  
pp. 61-70
Author(s):  
JOHN REYNOLDS ◽  
CHARLES D. PUSEY
Keyword(s):  
T Cells ◽  
Basement Membrane ◽  
Oral Administration ◽  
Glomerular Basement Membrane ◽  
Crescent Formation ◽  
Necrotizing Glomerulonephritis ◽  
Wistar Kyoto ◽  
Dose Dependent ◽  
Experimental Autoimmune

Abstract. Experimental autoimmune glomerulonephritis (EAG), an animal model of Goodpasture's disease, can be induced in Wistar Kyoto (WKY) rats by a single injection of collagenase-solubilized rat glomerular basement membrane (GBM) in adjuvant. EAG is characterized by circulating and deposited anti-GBM antibodies, accompanied by focal necrotizing glomerulonephritis with crescent formation. The inhibitory effect of orally administered antigens has been reported in various animal models of autoimmunity but not in EAG in the rat. The effects of feeding rat GBM by gavage, at total doses of 0.5, 2.5, or 5 mg, before immunization were examined. A dose-dependent effect was observed on the development of EAG. A dose of 0.5 mg of GBM had no effect on disease, 2.5 mg resulted in a moderate reduction in the severity of nephritis but no change in anti-GBM antibody production, and 5 mg resulted in a marked reduction in circulating and deposited anti-GBM antibodies, albuminuria, deposits of fibrin in the glomeruli, severity of glomerular abnormalities, and numbers of infiltrating T cells and macrophages. Animals that were fed 5 mg of GBM showed a significant reduction in IgG2a but not IgG1, anti-GBM antibody levels, suggesting downregulation of Th1 responses. There was also a dose-dependent reduction in the proliferative responses of splenic T cells from treated animals to GBM antigen in vitro. These results clearly demonstrate that mucosal tolerance can be induced by oral administration of GBM antigen and that this approach is effective in preventing EAG.

scholarly journals Protection against anti-glomerular basement membrane (GBM)-mediated nephritis in C3- and C4-deficient mice

1997 ◽  
Vol 110 (3) ◽  
pp. 403-409 ◽  
Author(s):  
N. S. SHEERIN ◽  
T. SPRINGALL ◽  
M. C. CARROLL ◽  
B. HARTLEY ◽  
S. H. SACKS
Keyword(s):  
Basement Membrane ◽  
Glomerular Basement Membrane ◽  
Deficient Mice

scholarly journals Production of transforming growth factor beta by human T lymphocytes and its potential role in the regulation of T cell growth.

1986 ◽  
Vol 163 (5) ◽  
pp. 1037-1050 ◽  
Author(s):  
J H Kehrl ◽  
L M Wakefield ◽  
A B Roberts ◽  
S Jakowlew ◽  
M Alvarez-Mon ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell ◽  
T Lymphocytes ◽  
Transforming Growth Factor Beta ◽  
Potential Role ◽  
Transforming Growth Factor ◽  
Cell Types ◽  
Tgf Beta ◽  
Activated T Cells ◽  
Growth Factor Beta

This study examines the potential role of transforming growth factor beta (TGF-beta) in the regulation of human T lymphocyte proliferation, and proposes that TGF-beta is an important autoregulatory lymphokine that limits T lymphocyte clonal expansion, and that TGF-beta production by T lymphocytes is important in T cell interactions with other cell types. TGF-beta was shown to inhibit IL-2-dependent T cell proliferation. The addition of picograms amounts of TGF-beta to cultures of IL-2-stimulated human T lymphocytes suppressed DNA synthesis by 60-80%. A potential mechanism of this inhibition was found. TGF-beta inhibited IL-2-induced upregulation of the IL-2 and transferrin receptors. Specific high-affinity receptors for TGF-beta were found both on resting and activated T cells. Cellular activation was shown to result in a five- to sixfold increase in the number of TGF-beta receptors on a per cell basis, without a change in the affinity of the receptor. Finally, the observations that activated T cells produce TGF-beta mRNA and that TGF-beta biologic activity is present in supernatants conditioned by activated T cells is strong evidence that T cells themselves are a source of TGF-beta. Resting T cells were found to have low to undetectable levels of TGF-beta mRNA, while PHA activation resulted in a rapid increase in TGF-beta mRNA levels (within 2 h). Both T4 and T8 lymphocytes were found to make mRNA for TGF-beta upon activation. Using both a soft agar assay and a competitive binding assay, TGF-beta biologic activity was found in supernatants conditioned by T cells; T cell activation resulted in a 10-50-fold increase in TGF-beta production. Thus, TGF-beta may be an important antigen-nonspecific regulator of human T cell proliferation, and important in T cell interaction with other cell types whose cellular functions are modulated by TGF-beta.

scholarly journals Th2 responses induce humorally mediated injury in experimental anti-glomerular basement membrane glomerulonephritis.

1997 ◽  
Vol 8 (7) ◽  
pp. 1101-1108 ◽  
Author(s):  
X R Huang ◽  
S R Holdsworth ◽  
P G Tipping
Keyword(s):  
T Cells ◽  
T Cell ◽  
Basement Membrane ◽  
Immune Responses ◽  
Glomerular Basement Membrane ◽  
Acute Injury ◽  
Delayed Type Hypersensitivity ◽  
Acute Glomerulonephritis ◽  
Neutrophil Influx ◽  
Mouse Immunoglobulin

Acute autologous phase anti-glomerular basement membrane glomerulonephritis was compared in Th1-prone (C57BL/6) and Th2-prone (BALB/c) mice. Sensitized BALB/c mice, given a subnephritogenic intravenous dose of anti-mouse glomerular basement membrane globulin, developed acute glomerulonephritis characterized by marked proteinuria and glomerular deposition of mouse immunoglobulin and complement. A significant glomerular neutrophil influx was observed, but few T cells and macrophages were present. C57BL/6 mice, given the same dose of disease-inducing globulin, also developed acute glomerulonephritis, although their proteinuria was significantly less. Glomerular deposition of mouse immunoglobulin and complement and the influx of neutrophils were also significantly less than in BALB/c mice. However, their glomerular accumulation of macrophages and T cells was significantly greater. Complement depletion attenuated neutrophil influx and proteinuria in BALB/c mice but did not affect T cell or macrophage accumulation or proteinuria in C57BL/6 mice. CD4+ T cell depletion significantly reduced glomerular macrophage, T cell influx, and proteinuria in C57BL/6 mice, but had no effect on proteinuria or neutrophil influx in BALB/c mice. Thus, immune responses to planted glomerular antigens in Th2-prone mice induce acute injury as a result of antibody deposition, complement activation, and neutrophil influx, whereas immune responses to the same antigen in Th1-prone mice induce delayed-type hypersensitivity-like lesions in affected glomeruli.

scholarly journals Increased Growth Differentiation Factor 15 in Patients with Hypoleptinemia-Associated Lipodystrophy

2020 ◽  
Vol 21 (19) ◽  
pp. 7214 ◽  
Author(s):  
Susan Kralisch ◽  
Annett Hoffmann ◽  
Juliane Estrada-Kunz ◽  
Michael Stumvoll ◽  
Mathias Fasshauer ◽  
...  
Keyword(s):  
Mrna Expression ◽  
Transforming Growth Factor ◽  
Linear Regression Analysis ◽  
Control Group ◽  
Serum Concentrations ◽  
Metabolic Complications ◽  
Growth Differentiation Factor 15 ◽  
Differentiation Factor ◽  
Obesity And Diabetes ◽  
The Impact

Objective. Similar to obesity, lipodystrophy (LD) causes adipose tissue dysfunction and severe metabolic complications. Growth differentiation factor 15 (GDF15) belongs to the transforming growth factor β superfamily and is dysregulated in metabolic disease including obesity and diabetes mellitus. Circulating levels in LD and the impact of leptin treatment have not been investigated so far. Material and Methods. GDF15 serum levels were quantified in 60 LD patients without human immunodeficiency virus infection and 60 controls matched for age, gender, and body mass index. The impact of metreleptin treatment on circulating GDF15 was assessed in a subgroup of patients. GDF15 mRNA expression was determined in metabolic tissues of leptin-deficient lipodystrophic aP2-nSREBP1c-Tg mice, obese ob/ob mice, and control C57Bl6 mice. Results. Median GDF15 serum concentrations were significantly higher in LD patients (819 ng/L) as compared to the control group (415 ng/L) (p < 0.001). In multiple linear regression analysis, an independent and positive association remained between GDF15 on one hand and age, patient group, hemoglobin A1c, triglycerides, and C-reactive protein on the other hand. Moreover, there was an independent negative association between GFD15 and estimated glomerular filtration rate. Circulating GDF15 was not significantly affected by metreleptin treatment in LD patients. Gdf15 was upregulated in leptin-deficient lipodystrophic mice as compared to controls. Moreover, Gdf15 mRNA expression was downregulated by leptin treatment in lipodystrophic and obese animals. Conclusions. Serum concentrations of GDF15 are elevated in LD patients and independently associated with markers of metabolic dysfunction. Gdf15 expression is higher in lipodystrophic mice and downregulated by leptin treatment.

5949Interleukin-6 and growth differentiation factor-15 in hypertensive heart failure

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
C Fernandez ◽  
J Rysa ◽  
J Nilsson ◽  
G Engstrom ◽  
M Orho-Melander ◽  
...  
Keyword(s):  
Heart Failure ◽  
Transforming Growth Factor ◽  
Mechanical Stretch ◽  
Neonatal Rat ◽  
Chronic Hypertension ◽  
Mrna Levels ◽  
Growth Differentiation Factor 15 ◽  
Hypertrophic Growth ◽  
Differentiation Factor ◽  
Circulating Levels

Abstract Background Hypertension is the leading cause for the development of heart failure (HF). Increased hemodynamic load, including mechanical stretch and neurohumoral factors, is able to trigger hypertrophic growth of cardiac myocytes. Although hypertensive HF is prevalent, there is no useful biomarker to identify HF due to chronic hypertension. Aims To identify plasma markers associated with incidence of hypertensive HF. Methods Circulating levels of 149 proteins were measured by proximity extension assay at baseline examination in 4469 individuals from the Malmö Diet and Cancer study. Protein levels were compared to stretch-activated gene expression changes in cultured neonatal rat ventricular myocytes (NRVM) in response to 1, 4, 12, 24 or 48 hours of cyclic mechanical stretch. Association between plasma proteins level and HF incidence and hypertension was studied using respectively Cox proportional hazards model and binary logistic regressions. Results After Bonferroni correction, 44 circulating proteins were significantly differentially expressed in individuals who developed HF during follow-up versus controls (P<3.4E-4). Out of these, 5 proteins (Interleukin-6 (IL-6), Growth Differentiation Factor-15 (GDF15), Interleukin-1 Receptor-Like-1 (ST2), Plasminogen Activator Urokinase Receptor (U-PAR), Transforming Growth Factor-α (TGF-α)), corresponding mRNA levels were upregulated by mechanical stretch in NRVM at all time points (P<0.05). Similar upregulation for the 5 proteins was shown in hypertensive versus normotensive individuals (P≤8.05E-4). In a model with all 5 proteins entered simultaneously, GDF15 and IL-6 were predictive of incident HF after adjustment for age, sex and NT-BNP levels (205 events; hazard ratio [HR] per SD increment of protein: HR=1.29, CI=1.05–1.58, P=0.013 and HR=1.16, CI=1.02–1.33, P=0.028). Using the same model, IL-6 but not GDF15 associated with hypertension (Odds ratio [OR] per SD increment of IL-6: OR=1.18, CI=1.09–1.27, P=3.3E-5). In hypertensive individuals GDF15 and IL-6 were individually predictive of future HF after adjustment for age, sex, NT-BNP levels, smoking, BMI and diabetes (183 events; HR=1.36, CI=1.16–1.60, P=1.64E-4 and HR=1.21, CI=1.05–1.40, P=0.008). Furthermore, in these hypertensive individuals, GDF15 and IL-6 were predictive of HF in a model with IL-6, GDF15, ST2 and TGF-α entered simultaneously after adjustment for age, sex and NT-BNP levels (176 events; HR=1.36, CI=1.13–1.64, P=0.001 and HR=1.16, CI=1.01–1.34, P=0.041). Conclusions Circulating levels of IL-6 and GDF15 might be used as NT-BNP independent biomarkers for HF development in hypertensive patients. Acknowledgement/Funding Påhlsson, Crafoord, Lundström, Åke Wiberg, Royal Physiographic Society and the Swedish Foundation for Strategic Research for IRC15-0067

scholarly journals Absence of central tolerance in Aire-deficient mice synergizes with immune-checkpoint inhibition to enhance antitumor responses

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Asiel A. Benitez ◽  
Sara Khalil-Agüero ◽  
Anjali Nandakumar ◽  
Namita T. Gupta ◽  
Wen Zhang ◽  
...  
Keyword(s):  
T Cells ◽  
Immune Checkpoint ◽  
Immune Checkpoint Blockade ◽  
Tumor Rejection ◽  
Checkpoint Blockade ◽  
Cell Repertoire ◽  
Activated T Cells ◽  
Central Tolerance ◽  
Tolerance Breakdown ◽  
Deficient Mice

AbstractThe endogenous anti-tumor responses are limited in part by the absence of tumor-reactive T cells, an inevitable consequence of thymic central tolerance mechanisms ensuring prevention of autoimmunity. Here we show that tumor rejection induced by immune checkpoint blockade is significantly enhanced in Aire-deficient mice, the epitome of central tolerance breakdown. The observed synergy in tumor rejection extended to different tumor models, was accompanied by increased numbers of activated T cells expressing high levels of Gzma, Gzmb, Perforin, Cxcr3, and increased intratumoural levels of Cxcl9 and Cxcl10 compared to wild-type mice. Consistent with Aire’s central role in T cell repertoire selection, single cell TCR sequencing unveiled expansion of several clones with high tumor reactivity. The data suggest that breakdown in central tolerance synergizes with immune checkpoint blockade in enhancing anti-tumor immunity and may serve as a model to unmask novel anti-tumor therapies including anti-tumor TCRs, normally purged during central tolerance.

scholarly journals Protective Effects of ALDH1A Enzyme Inhibition on Helicobacter-Induced Colitis in Smad3−/− Mice are Associated with Altered α4ß7 Integrin Expression on Activated T Cells

Nutrients ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2927
Author(s):  
Audrey Seamons ◽  
Michael Haenisch ◽  
Stacey Meeker ◽  
Olesya Pershutkina ◽  
Thea Brabb ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell ◽  
Enzyme Inhibition ◽  
Treatment Options ◽  
T Cell Subsets ◽  
Protective Effects ◽  
Activated T Cells ◽  
Before And After ◽  
Inflammatory Bowel ◽  
Draining Lymph Nodes

Many inflammatory bowel disease (IBD) patients require surgical intervention due to limited pharmacological treatment options. Antibodies targeting α4ß7, a gut-homing integrin, are one of the most promising IBD treatments. As retinoic acid (RA) regulates expression of gut-homing proteins including α4ß7 integrin, we tested if ALDH1A enzymes in the RA synthesis pathway could be targeted for IBD treatment using a potent inhibitor, WIN 18,446. Age- and sex-matched Smad3−/− mice were fed a diet with and without WIN 18,446 for 3 weeks before triggering inflammation with Helicobacter bilis infection. Colitis was evaluated by histopathology one week following the IBD trigger, and T cell subsets were evaluated before and after the IBD trigger. WIN 18,446 treatment significantly reduced IBD severity in Smad3−/− mice and reduced expression of α4ß7 integrin on multiple activated CD4+ T cell subsets. This change was associated with increased ratios of induced regulatory T cells to Th17 cells during the inflammatory response in the draining lymph nodes. These studies indicate that RA reduction via ALDH1A enzyme inhibition is a potential new target for IBD treatment. Further studies are needed to examine its effects on other types of immune cells, to evaluate the efficacy window for this target, and to determine its efficacy in other animal models of IBD.

Ovine Mesangiocapillary Glomerulonephritis Type I and Crescent Formation

1990 ◽  
Vol 27 (1) ◽  
pp. 26-34 ◽  
Author(s):  
P. F. Frelier ◽  
D. L. Armstrong ◽  
J. Pritchard
Keyword(s):  
Basement Membrane ◽  
Glomerular Basement Membrane ◽  
Inflammatory Cells ◽  
Suitable Model ◽  
Type I ◽  
Human Beings ◽  
Crescent Formation ◽  
Mesangiocapillary Glomerulonephritis ◽  
Bowman's Capsule

Morphologic examination of four Finnish Landrace mixed-breed lambs, 27 to 35 days of age, affected with mesangiocapillary glomerulonephritis type 1, demonstrated a progressive glomerulonephritis. By 27 days of age, three lambs had crescents in 58 to 93% of glomeruli. These three lambs were also uremic. The accelerated rate of crescent formation was attributed to infiltrating polymorphonuclear leukocytes and monocytes, the result of discontinuities (gaps) in the glomerular basement membrane, and to the loss of the integrity of Bowman's capsule. In the three lambs, platelets were identified adjacent to the endothelium or denuded glomerular basement membrane. Two distinctly different types of crescents were noted, apparently dependent on the integrity of Bowman's capsule. One type resulted from the influx of inflammatory cells and dissociation of parietal epithelial cells from Bowman's capsule. The other type was more extensive and contained collagen and was associated with damage to Bowman's capsule resulting in cellular infiltration from the interstitium and sclerosis. Based on morphologic similarities, ovine mesangiocapillary glomerulonephritis is a suitable model for studying the pathogenesis and treatment of mesangiocapillary glomerulonephritis type 1 in human beings.

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