期刊
STEM CELLS
卷 26, 期 2, 页码 562-569出版社
WILEY
DOI: 10.1634/stemcells.2007-0528
关键词
mesenchymal stem cells; B-cell subsets; systemic autoimmunity; polyclonal stimulation
Human bone marrow multipotent mesenchymal stromal cells are progenitor cells that can be expanded in vitro and differentiate into various cells of mesodermal origin. They contribute to the bone marrow reticular niche, where mature B cells and long-lived plasma cells are maintained. Multipotent mesenchymal stromal cells were recently shown to modulate T- and B-cell proliferation and differentiation, dendritic cell maturation, and natural killer activity. These immunoregulatory properties encouraged a possible use of these cells to modulate autoimmune responses in humans. We studied the influence of bone marrow mesenchymal stem cells on highly purified B-cell subsets isolated from healthy donors and total B cells from pediatric systemic lupus erythematosus patients. Bone marrow mesenchymal stem cells promoted proliferation and differentiation into immunoglobulin-secreting cells of transitional and naive B cells stimulated with an agonist of Toll-like receptor 9, in the absence of B cell receptor triggering. They strongly enhanced proliferation and differentiation into plasma cells of memory B-cell populations. A similar effect was observed in response to polyclonal stimulation of B cells isolated from pediatric patients with systemic lupus erythematosus. This study casts important questions on bone marrow mesenchymal stem cells as a therapeutic tool in autoimmume diseases in which B-cell activation is crucially implicated in the pathogenesis of the disease.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据