Polyclonal hyper-IgE mouse model reveals mechanistic insights into antibody class switch recombination.
نویسندگان
چکیده
Preceding antibody constant regions are switch (S) regions varying in length and repeat density that are targets of activation-induced cytidine deaminase. We asked how participating S regions influence each other to orchestrate rearrangements at the IgH locus by engineering mice in which the weakest S region, Sε, is replaced with prominent recombination hotspot Sμ. These mice produce copious polyclonal IgE upon challenge, providing a platform to study IgE biology and therapeutic interventions. The insertion enhances ε germ-line transcript levels, shows a preference for direct vs. sequential switching, and reduces intraswitch recombination events at native Sμ. These results suggest that the sufficiency of Sμ to mediate IgH rearrangements may be influenced by context-dependent cues.
منابع مشابه
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عنوان ژورنال:
- Proceedings of the National Academy of Sciences of the United States of America
دوره 110 39 شماره
صفحات -
تاریخ انتشار 2013