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Osteopontin exacerbates the progression of experimental autoimmune myasthenia gravis by affecting the differentiation of T cell subsets.

Abstract：

:Osteopontin (OPN) is a multifunctional extracellular matrix phosphoprotein that has a specific and complicated structure, and contributes to numerous physiological and pathological activities. The mechanism of OPN in many diseases has been confirmed; however, the role of OPN in myasthenia gravis (MG) remains unclear. In this study, we recombined rat OPN protein in vitro, and assessed how OPN affects the development of autoimmunity using an experimental autoimmune myasthenia gravis (EAMG) rat model. The results showed that the concentration of OPN in serum was up-regulated. Both mRNA and protein levels in splenocytes increased in the EAMG model. OPN treatment in vitro strongly promoted the differentiation of Th1 cells, and inhibited the differentiation of Treg cells. Intraperitoneal injection of OPN revealed the early incidence of EAMG, and more serious disease. This effect was accompanied by an increased percentage of Th1 cells. In conclusion, OPN likely exacerbates the pathogenesis of EAMG by promoting the differentiation of Th1 cells and inhibiting the differentiation of Treg cells.

journal_name

Int Immunopharmacol

journal_title

International immunopharmacology

authors

Zhao J,Jing J,Zhao W,Li X,Hou L,Zheng C,Kong Q,Li W,Yao X,Chang L,Li H,Mu L,Wang G,Wang J

doi

10.1016/j.intimp.2020.106335

subject

Has Abstract

pub_date

2020-02-25 00:00:00

pages

106335

eissn

1567-5769

issn

1878-1705

pii

S1567-5769(19)32908-X

journal_volume

82

pub_type

杂志文章

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