Plasma cell ontogeny defined by quantitative changes in blimp-1 expression.

Plasma cell ontogeny defined by quantitative changes in blimp-1 expression.
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DOI:
10.1084/jem.20040973
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发表时间:
2004-10-18
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Nutt SL
Nutt SL
中科院分区:
其他
文献类型:
--
作者:
Kallies A;Hasbold J;Tarlinton DM;Dietrich W;Corcoran LM;Hodgkin PD;Nutt SL

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浆细胞由一群终末分化的 B 细胞组成,这些细胞的发育依赖于转录调节因子 B 淋巴细胞诱导的成熟蛋白 1 (Blimp-1)。我们将 gfp 报告基因引入到 Blimp-1 基因座中,并表明杂合小鼠在体内和体外的所有抗体分泌细胞 (ASC) 中表达绿色荧光蛋白。在体外,这些细胞在表面表型、免疫球蛋白分泌率和Blimp-1表达水平方面表现出相当大的异质性。重要的是,对免疫诱导的体内 ASC 的分析揭示了一条发育途径,其中 Blimp-1 表达水平的增加定义了具有许多表型和分子相关性的浆细胞分化的发育阶段。因此,骨髓中从短暂的浆母细胞成熟为长寿的 ASC 取决于 Blimp-1 表达量的增加。
Plasma cells comprise a population of terminally differentiated B cells that are dependent on the transcriptional regulator B lymphocyte–induced maturation protein 1 (Blimp-1) for their development. We have introduced a gfp reporter into the Blimp-1 locus and shown that heterozygous mice express the green fluorescent protein in all antibody-secreting cells (ASCs) in vivo and in vitro. In vitro, these cells display considerable heterogeneity in surface phenotype, immunoglobulin secretion rate, and Blimp-1 expression levels. Importantly, analysis of in vivo ASCs induced by immunization reveals a developmental pathway in which increasing levels of Blimp-1 expression define developmental stages of plasma cell differentiation that have many phenotypic and molecular correlates. Thus, maturation from transient plasmablast to long-lived ASCs in bone marrow is predicated on quantitative increases in Blimp-1 expression.
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