Abatacept (CTLA-4IG) treatment reduces the migratory capacity of monocytes in patients with rheumatoid arthritis

被引：67

作者：

Bonelli, M. ^{[1
]}

Ferner, E. ^{[1
]}

Goeschl, L. ^{[1
]}

Blueml, S. ^{[1
]}

Hladik, A. ^{[1
]}

Karonitsch, T. ^{[1
]}

Kiener, H. P. ^{[1
]}

Byrne, R. ^{[1
]}

Niederreiter, B. ^{[1
]}

Steiner, C. W. ^{[1
]}

Rath, E. ^{[1
]}

Bergmann, M. ^{[1
]}

Smolen, J. S. ^{[1
]}

Scheinecker, C. ^{[1
]}

机构：

[1] Med Univ Vienna, A-1090 Vienna, Austria

来源：

ARTHRITIS AND RHEUMATISM | 2013年 / 65卷 / 03期

关键词：

TRANSENDOTHELIAL MIGRATION; T-CELL; ACTIVATION; COSTIMULATION; OSTEOCLASTS; ADHESION; SUBSETS;

D O I：

10.1002/art.37787

中图分类号：

R5 [内科学];

学科分类号：

100201 [内科学];

摘要：

Objective The binding of abatacept (CTLA-4Ig) to the B7 ligands CD80 and CD86 prevents the engagement of CD28 on T cells and thereby prevents effector T cell activation. In addition, a direct effect of CTLA-4Ig on antigen-presenting cells (APCs) could contribute to the therapeutic effect. To further elucidate the mechanism of CTLA-4Ig, we performed phenotype and functional analyses of APCs in patients with rheumatoid arthritis (RA) before and after the initiation of CTLA-4Ig therapy. Methods Peripheral blood mononuclear cells were analyzed before and at 2 and 4 weeks after the initiation of CTLA-4Ig therapy. Proportions of APCs were determined by flow cytometry. CD14+ monocytes were further analyzed for the expression of costimulatory and adhesion molecules and for their transendothelial migratory capacity in vitro. In addition, CD14+ monocytes from healthy controls were analyzed for their migratory and spreading capacity. Results Proportions and absolute numbers of monocytes were significantly increased in RA patients treated with CTLA-4Ig. The expression of several adhesion molecules was significantly diminished. In addition, monocytes displayed a significant reduction in their endothelial adhesion and transendothelial migratory capacity upon treatment with CTLA-4Ig. Likewise, isolated monocytes from healthy controls revealed a significant reduction in their migratory and spreading activity after preincubation with CTLA-4Ig or anti-CD80 and anti-CD86 antibodies. Conclusion We describe direct effects of CTLA-4Ig therapy on phenotype and functional characteristics of monocytes in RA patients that might interfere with the migration of monocytes to the synovial tissue. This additional mechanism of CTLA-4Ig might contribute to the beneficial effects of CTLA-4Ig treatment in RA patients.

引用

页码：599 / 607

页数：9

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