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| Open AccessTNF-α-mediated m6A modification of ELMO1 triggers directional migration of mesenchymal stem cell in ankylosing spondylitis
Abnormal functions of mesenchymal stem cells (MSC) contribute into the pathogenensis of ankylosing spondylitis (AS). Here, the authors show that TNF-α at high concentration induces enhances migration of AS-MSC through METTL14 mediated m6A modification of the ELMO1 3′ UTR.
- Zhongyu Xie
- , Wenhui Yu
- & Huiyong Shen
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Article
| Open AccessGM-CSF drives dysregulated hematopoietic stem cell activity and pathogenic extramedullary myelopoiesis in experimental spondyloarthritis
Spondyloarthritis pathology is manifested by increased myeloid infiltration of the joints. Here the authors show that in a mouse model of spondyloarthritis, a single dose of a microbial ligand curdlan induces persistent extramedullary myelopoiesis in the spleen and joints, which is driven by GM-CSF and can be amplified by exogenous IL-33.
- Daniel Regan-Komito
- , James W. Swann
- & Thibault Griseri
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Article
| Open AccessContext-specific regulation of surface and soluble IL7R expression by an autoimmune risk allele
Interleukin-7 (IL-7) is a central cytokine in T cell homeostasis. Here the authors show that allelic variation at rs6897932, an autoimmune GWAS risk allele at IL7R, regulates surface and soluble IL-7R in stimulated monocytes, indicating a function of monocytes in IL-7-related autoimmunity.
- Hussein Al-Mossawi
- , Nicole Yager
- & Benjamin P. Fairfax
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Article
| Open AccessRORγt inhibition selectively targets IL-17 producing iNKT and γδ-T cells enriched in Spondyloarthritis patients
The role of innate T cell subsets in the pathogenesis of spondyloarthritis (SpA) is not well understood. Here, the authors examine the role of invariant natural killer T (iNKT) and γδ-T cells in SpA and show that disease-derived iNKT and γδ-T cells have unique and Th17-skewed phenotype and gene expression profiles within inflamed joints.
- Koen Venken
- , Peggy Jacques
- & Dirk Elewaut
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Article
| Open AccessGenetic signature to provide robust risk assessment of psoriatic arthritis development in psoriasis patients
Approximately 30% of psoriasis patients develop psoriatic arthritis (PsA) and early diagnosis is crucial for the management of PsA. Here, Patrick et al. develop a computational pipeline involving statistical and machine-learning methods that can assess the risk of progression to PsA based on genetic markers.
- Matthew T. Patrick
- , Philip E. Stuart
- & Lam C. Tsoi
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Article
| Open AccessMajor histocompatibility complex associations of ankylosing spondylitis are complex and involve further epistasis with ERAP1
Ankylosing spondylitis is a common, highly inheritable inflammatory arthritis with poorly understood biology. Here Brown, Cortes and colleagues use fine mapping of the major histocompatibility complex and identify novel associations, and identify other HLA alleles that like HLA-B27 interact with ERAP1 variants to influence disease risk.
- Adrian Cortes
- , Sara L. Pulit
- & Matthew A. Brown
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Article
| Open AccessDense genotyping of immune-related susceptibility loci reveals new insights into the genetics of psoriatic arthritis
Psoriatic arthritis (PsA) is a chronic inflammatory arthritis with a significant genetic component. Here, the authors analyse immune-related genetic markers in 1,962 PsA patients and 8,923 controls to identify novel PsA risk loci and highlight distinct genetic differences between psoriasis and PsA.
- John Bowes
- , Ashley Budu-Aggrey
- & Anne Barton