Igkappa allelic inclusion is a consequence of receptor editing.

Igkappa allelic inclusion is a consequence of receptor editing.
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DOI:
10.1084/jem.20061918
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发表时间:
2007-01-22
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Wilson PC
Wilson PC
中科院分区:
其他
文献类型:
--
作者:
Casellas R;Zhang Q;Zheng NY;Mathias MD;Smith K;Wilson PC

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The discovery of lymphocytes bearing two light chains in mice carrying self-reactive antibody transgenes has challenged the “one lymphocyte–one antibody” rule. However, the extent and nature of allelically included cells in normal mice is unknown. We show that 10% of mature B cells coexpress both Igκ alleles. These cells are not the result of failure in allelic exclusion per se, but arise through receptor editing. We find that under physiological conditions, editing occurs both by deletion and by inclusion with equal probability. In addition, we demonstrate that B lymphocytes carrying two B-cell receptors are recruited to germinal center reactions, and thus fully participate in humoral immune responses. Our data measure the scope of allelic inclusion and provide a mechanism whereby autoreactive B cells might “escape” central tolerance.
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