Pro-B cells sense productive immunoglobulin heavy chain rearrangement irrespective of polypeptide production
Pro-B cells sense productive immunoglobulin heavy chain rearrangement irrespective of polypeptide production
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Pro-B 细胞能够感知生产性免疫球蛋白重链重排,而与多肽的产生无关
DOI:
10.1073/pnas.1019224108
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Jäck H-M
中科院分区:
文献类型:
--
作者:
Lutz J;Müller W;Raman C;Jäck H-M
B-lymphocyte development is dictated by the protein products of functionally rearranged Ig heavy (H) and light (L) chain genes. Ig rearrangement begins in pro-B cells at the IgH locus. If pro-B cells generate a productive allele, they assemble a pre-B cell receptor complex, which signals their differentiation into pre-B cells and their clonal expansion. Pre-B cell receptor signals are also thought to contribute to allelic exclusion by preventing further IgH rearrangements. Here we show in two independent mouse models that the accumulation of a stabilized μH mRNA that does not encode μH chain protein specifically impairs pro-B cell differentiation and reduces the frequency of rearranged IgH genes in a dose-dependent manner. Because noncoding IgH mRNA is usually rapidly degraded by the nonsense-mediated mRNA decay machinery, we propose that the difference in mRNA stability allows pro-B cells to distinguish between productive and nonproductive Ig gene rearrangements and that μH mRNA may thus contribute to efficient H chain allelic exclusion.
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DOI:
--
发表时间:
1980
影响因子:
11.1
作者:
R. Perry;D. Kelley;C. Coleclough;J. Seidman;P. Leder;S. Tonegawa;G. Matthyssens;M. Weigert
通讯作者:
M. Weigert
影响因子:
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作者:
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10.5
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32.4
作者:
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通讯作者:
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4.4
作者:
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通讯作者:
Jack, Hans-Martin