LILR and KIR receptors recognize HLA-B27 and may influence immune response in ankylosing spondylitis (AS) development. Purpose of the study was to analyse LILRB1/LILRA3 polymorphisms in AS. We observed a possible protective effect of the T allele of LILRB1 rs1061680:T>C and no association with insertion/deletion polymorphisms of LILRA3 with AS.
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Human leukocyte immunoglobulin-like receptors in health and disease.
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Human leukocyte immunoglobulin (Ig)-like receptors (LILR) are a family of 11 innate immunomodulatory receptors, primarily expressed on lymphoid and myeloid cells. LILRs are either activating (LILRA) or inhibitory (LILRB) depending on their associated signalling domains (D). With the exception of the soluble LILRA3, LILRAs mediate immune activation, while LILRB1-5 primarily inhibit immune responses and mediate tolerance.
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Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing, China.
Objective: Leukocyte Ig-like receptor A3 (LILRA3) is a soluble receptor belongs to the immunoglobulin superfamily. Our previous studies demonstrated that LILRA3 is a common genetic risk for multiple autoimmune diseases, including RA. Functional LILRA3 conferred increased risk of joint destruction in patients with early RA.
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Int J Immunogenet
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Department of Clinical Immunology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland.
LILR and KIR receptors recognize HLA-B27 and may influence immune response in ankylosing spondylitis (AS) development. Purpose of the study was to analyse LILRB1/LILRA3 polymorphisms in AS. We observed a possible protective effect of the T allele of LILRB1 rs1061680:T>C and no association with insertion/deletion polymorphisms of LILRA3 with AS.
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Human leukocyte immunoglobulin-like receptors (LILR) are a family of 11 functional genes encoding five activating (LILRA1, 2, 4-6), five inhibitory (LILRB1-5) and one soluble (LILRA3) form. The number of LILR genes is conserved among individuals, except for LILRA3 and LILRA6, which exhibit copy-number variations. The LILR genes are rapidly evolving and showing large interspecies differences, making it difficult to analyze the functions of LILR using an animal model.
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