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Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Proc+Natl+Acad+Sci+U+S+A 2015 ; 112 (47): E6535-43 Nephropedia Template TP
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Leukocyte-specific protein 1 regulates T-cell migration in rheumatoid arthritis #MMPMID26554018
Hwang SH; Jung SH; Lee S; Choi S; Yoo SA; Park JH; Hwang D; Shim SC; Sabbagh L; Kim KJ; Park SH; Cho CS; Kim BS; Leng L; Montgomery RR; Bucala R; Chung YJ; Kim WU
Proc Natl Acad Sci U S A 2015[Nov]; 112 (47): E6535-43 PMID26554018show ga
We screened rheumatoid arthritis (RA)-associated copy number variations (CNVs) across the whole genome and identified significant deletion variants encompassing leukocyte-specific protein 1 (LSP1) gene. Functional assays revealed that LSP1, induced by T-cell receptor activation, negatively regulates T-cell migration. Loss of Lsp1 promotes T-cell migration into antigen-instilled tissues and draining lymph nodes in mice with T-cell?dependent chronic inflammation. Moreover, patients with RA show diminished expression of LSP1 in peripheral T cells with increased migratory capacity. To our knowledge, our work is the first to demonstrate how CNVs result in immune dysfunction and a disease phenotype, highlighting the importance of LSP1 CNVs and LSP1 insufficiency in the pathogenesis of RA.