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Differential Expression of Toll-Like Receptor Signaling Pathway Is Associated with Microscopic Polyangiitis in Peripheral Blood Neutrophils.
Immunological Investigations 2017 May
Constitutive or excessive activation of Toll-like receptor (TLR) signaling pathway can disrupt the body's immune tolerance to autoantigen, thus promoting the development of autoimmune disease. However, the expression profile of TLR signaling pathway in peripheral blood neutrophils in the pathogenesis of microscopic polyangiitis (MPA) remains unclear. Thus, improved understanding of the pathobiology of this disease may aid in the development of therapeutic targets for patients with MPA. In the present study, we assessed the expression of TLR signaling pathway-related genes in peripheral blood neutrophils in patients with MPA. PCR array analysis was performed on 20 patients with MPA and 12 healthy controls. Gene expression profile was performed using the human TLR for autoimmunity and inflammation PCR array of Genecopoeia, containing 84 genes related to TLR signaling pathway and six house-keeping genes. We then used quantitative real-time PCR to validate the array test. The array results identified 13 upregulated genes and 5 genes which were downregulated. The resulting qRT-PCR was consistent with the findings by PCR array. Our results suggest that peripheral blood neutrophils display changes in the expression of TLR signaling pathway-related genes associated with the pathogenesis of microscopic polyangiitis.
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