1
|
Wilbe M, Kozyrev SV, Farias FHG, Bremer HD, Hedlund A, Pielberg GR, Seppälä EH, Gustafson U, Lohi H, Carlborg Ö, Andersson G, Hansson-Hamlin H, Lindblad-Toh K. Multiple Changes of Gene Expression and Function Reveal Genomic and Phenotypic Complexity in SLE-like Disease. PLoS Genet 2015; 11:e1005248. [PMID: 26057447 PMCID: PMC4461293 DOI: 10.1371/journal.pgen.1005248] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 04/27/2015] [Indexed: 02/07/2023] Open
Abstract
The complexity of clinical manifestations commonly observed in autoimmune disorders poses a major challenge to genetic studies of such diseases. Systemic lupus erythematosus (SLE) affects humans as well as other mammals, and is characterized by the presence of antinuclear antibodies (ANA) in patients’ sera and multiple disparate clinical features. Here we present evidence that particular sub-phenotypes of canine SLE-related disease, based on homogenous (ANAH) and speckled ANA (ANAS) staining pattern, and also steroid-responsive meningitis-arteritis (SRMA) are associated with different but overlapping sets of genes. In addition to association to certain MHC alleles and haplotypes, we identified 11 genes (WFDC3, HOMER2, VRK1, PTPN3, WHAMM, BANK1, AP3B2, DAPP1, LAMTOR3, DDIT4L and PPP3CA) located on five chromosomes that contain multiple risk haplotypes correlated with gene expression and disease sub-phenotypes in an intricate manner. Intriguingly, the association of BANK1 with both human and canine SLE appears to lead to similar changes in gene expression levels in both species. Our results suggest that molecular definition may help unravel the mechanisms of different clinical features common between and specific to various autoimmune disease phenotypes in dogs and humans. Autoimmune disorders display complex phenotypes with clinically diverse manifestations, which together with complex genetic inheritance and environmental factors triggering the disease may complicate the diagnosis and investigation of the disease mechanism. The use of dog breeds may facilitate the analysis of genetic factors based on genetic homogeneity within a breed. We performed genetic analysis of two diseases common in dogs, immune-mediated rheumatic disease (IMRD) and steroid-responsive meningitis-arteritis (SRMA) that are similar to human SLE and a group of vasulitides such as Kawasaki disease, Henoch-Schönlein purpura and Behçet’s disease, correspondingly. We identified eleven genes along with specific alleles and genotypes for the major histocompatibility complex II involved in susceptibility, and studied their expression. The genes shared between the two diseases may be involved in the common immune signaling pathways and hence account for the common clinical signs, whereas the phenotype-specific genes may be implicated in particular pathways active in certain tissues and organs, and thereby may be responsible for characteristic manifestations seen only in one of the diseases. Further, the similarity between human and dog SLE at the genetic and functional levels demonstrated by the association of the BANK1 gene in both species indicates the common cross-species mechanisms of autoimmunity and may help identification of novel disease genes and pathways.
Collapse
Affiliation(s)
- Maria Wilbe
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Sergey V. Kozyrev
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Fabiana H. G. Farias
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Hanna D. Bremer
- Department of Clinical Sciences, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Anna Hedlund
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Gerli R. Pielberg
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Eija H. Seppälä
- Research Programs Unit, Molecular Neurology; Department of Veterinary Biosciences, University of Helsinki and Folkhälsan Research Center, Helsinki, Finland
| | - Ulla Gustafson
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Hannes Lohi
- Research Programs Unit, Molecular Neurology; Department of Veterinary Biosciences, University of Helsinki and Folkhälsan Research Center, Helsinki, Finland
| | - Örjan Carlborg
- Department of Clinical Sciences, Division of Computational Genetics, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Göran Andersson
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Helene Hansson-Hamlin
- Department of Clinical Sciences, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
- * E-mail: (HHH); (KLT)
| | - Kerstin Lindblad-Toh
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- Broad Institute, Cambridge, Cambridge, Massachusetts, United States of America
- * E-mail: (HHH); (KLT)
| |
Collapse
|
2
|
Bernstein IL, Li JT, Bernstein DI, Hamilton R, Spector SL, Tan R, Sicherer S, Golden DBK, Khan DA, Nicklas RA, Portnoy JM, Blessing-Moore J, Cox L, Lang DM, Oppenheimer J, Randolph CC, Schuller DE, Tilles SA, Wallace DV, Levetin E, Weber R. Allergy diagnostic testing: an updated practice parameter. Ann Allergy Asthma Immunol 2008; 100:S1-148. [PMID: 18431959 DOI: 10.1016/s1081-1206(10)60305-5] [Citation(s) in RCA: 291] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
3
|
Morgan PE, Sturgess AD, Davies MJ. Increased levels of serum protein oxidation and correlation with disease activity in systemic lupus erythematosus. ACTA ACUST UNITED AC 2005; 52:2069-79. [PMID: 15986354 DOI: 10.1002/art.21130] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
OBJECTIVE To examine protein oxidation in systemic lupus erythematosus (SLE) and to correlate levels of protein oxidation products with disease activity. METHODS Serum was collected from SLE patients and healthy control subjects. Protein-bound carbonyls and the pro-oxidant enzyme myeloperoxidase (MPO) were quantified by enzyme-linked immunosorbent assay. Protein thiols were quantified using 5,5'-dithionitrobenzoic acid. Protein-bound amino acids and methionine, tyrosine, and phenylalanine oxidation products were quantified by acid hydrolysis and high-performance liquid chromatography. Disease activity was assessed by the Systemic Lupus Erythematosus Disease Activity Index (SLEDAI). Levels of anti-double-stranded DNA (anti-dsDNA) antibodies were measured by radioimmunoassay. RESULTS Compared with control subjects, SLE patients exhibited elevated levels of protein carbonyls (0.108 +/- 0.078 versus 0.064 +/- 0.028 nmoles/mg of protein; P = 0.046), decreased levels of protein thiols (3.9 +/- 1.1 versus 4.9 +/- 0.7 nmoles/mg of protein; P = 0.003), decreased levels of protein-bound methionine (P = 0.0007), and increased levels of protein-bound methionine sulfoxide (P = 0.0043) and 3-nitrotyrosine (P = 0.0477). SLE patients with high SLEDAI scores or elevated anti-dsDNA antibody levels exhibited increased oxidation compared with patients with low SLEDAI scores or low antibody levels. Serum MPO levels were decreased in SLE patients (P = 0.03), suggesting that this enzyme is not responsible for the enhanced protein oxidation. CONCLUSION We found elevated levels of multiple markers of protein oxidation in sera from SLE patients compared with controls, and these levels correlated with disease activity. The findings suggest that protein oxidation may play a role in the pathogenesis of chronic organ damage in SLE.
Collapse
Affiliation(s)
- Philip E Morgan
- Free Radical Group, The Heart Research Institute, Camperdown, Sydney, New South Wales, Australia
| | | | | |
Collapse
|
4
|
Abstract
O lúpus eritematoso é doença auto-imune do tecido conjuntivo que reúne manifestações exclusivamente cutâneas ou multissistêmicas, podendo apresentar exuberância de auto-anticorpos. As lesões cutâneas do lúpus eritematoso são polimorfas e podem ser específicas ou inespecíficas. A diversidade de manifestações clínicas da doença reflete-se no amplo espectro de achados laboratoriais. Este artigo descreve as variadas formas clínicas do lúpus eritematoso cutâneo correlacionando-os com achados histopatológicos, de imunofluorescência direta e sorológicos.
Collapse
|
5
|
Bovin LF, Rieneck K, Workman C, Nielsen H, Sørensen SF, Skjødt H, Florescu A, Brunak S, Bendtzen K. Blood cell gene expression profiling in rheumatoid arthritis. Immunol Lett 2004; 93:217-26. [PMID: 15158620 DOI: 10.1016/j.imlet.2004.03.018] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2004] [Revised: 03/26/2004] [Accepted: 03/29/2004] [Indexed: 11/18/2022]
Abstract
UNLABELLED To study the pathogenic importance of the rheumatoid factor (RF) in rheumatoid arthritis (RA) and to identify genes differentially expressed in patients and healthy individuals, total RNA was isolated from peripheral blood mononuclear cells (PBMC) from eight RF-positive and six RF-negative RA patients, and seven healthy controls. Gene expression of about 10,000 genes were examined using oligonucleotide-based DNA chip microarrays. The analyses showed no significant differences in PBMC expression patterns from RF-positive and RF-negative patients. However, comparisons of gene expression patterns from all fourteen RA patients and healthy controls identified a subset of discriminative genes. These results were validated by real time reverse transcription polymerase chain reaction (RT-PCR) on another group of RA patients and healthy controls. This confirmed that the following genes had a significantly higher expression in RA patients than in healthy controls: CD14 antigen, defensin alpha-1 and alpha-3 (DEFA), fatty-acid-Coenzyme A ligase, long-chain 2 (FACL), ribonuclease 2 (RNASE2), S100 calcium-binding protein A8 and A12 (S100A8 and S100A12). In contrast, the expression of MHC class II, DQ beta1 (HLA-DQB1) was significantly reduced in RA patients compared to healthy controls. CONCLUSIONS With the analytical procedure employed, we did not find any indication that RF-positive and RF-negative RA are two fundamentally different diseases. Most of the genes discriminative between RA patients and healthy individuals are known to be involved in immunoinflammatory responses, especially those related to altered phagocytic functions.
Collapse
Affiliation(s)
- Lone Frier Bovin
- Institute for Inflammation Research IIR 7521, Rigshospitalet National University Hospital, Blegdamsvej 9, DK-2100, Copenhagen, Denmark
| | | | | | | | | | | | | | | | | |
Collapse
|