Active inhibition of plasma cell development in resting B cells by microphthalmia-associated transcription factor.
Active inhibition of plasma cell development in resting B cells by microphthalmia-associated transcription factor.
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DOI:
10.1084/jem.20040612
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发表时间:
2004-07-05
期刊:
影响因子:
--
通讯作者:
Peng SL
中科院分区:
文献类型:
--
作者:
Lin L;Gerth AJ;Peng SL
B cell terminal differentiation involves development into an antibody-secreting plasma cell, reflecting the concerted activation of proplasma cell transcriptional regulators, such as Blimp-1, IRF-4, and Xbp-1. Here, we show that the microphthalmia-associated transcription factor (Mitf) is highly expressed in naive B cells, where it antagonizes the process of terminal differentiation through the repression of IRF-4. Defective Mitf activity results in spontaneous B cell activation, antibody secretion, and autoantibody production. Conversely, ectopic Mitf expression suppresses the expression of IRF-4, the plasma cell marker CD138, and antibody secretion. Thus, Mitf regulates B cell homeostasis by suppressing the antibody-secreting fate.
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影响因子:
4.8
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DOI:
10.1073/pnas.0305855101
发表时间:
2004-04-20
影响因子:
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