AID is required for c-myc/IgH chromosome translocations in vivo.

Ramiro, Almudena R; Jankovic, Mila; Eisenreich, Thomas; Difilippantonio, Simone; Chen-Kiang, Selina; Muramatsu, Masamichi; Honjo, Tasuku; Nussenzweig, André et al. · Cell · 2004

basic_science · Level V

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Abstract

Chromosome translocations between c-myc and immunoglobulin (Ig) are associated with Burkitt's lymphoma in humans and with pristane- and IL6-induced plasmacytomas in mice. These translocations frequently involve Ig switch regions, suggesting that they might be the result of aberrant Ig class switch recombination (CSR). However, a direct link between CSR and chromosome translocations has not been established. We have examined c-myc/IgH translocations in IL6 transgenic mice that are mutant for activation induced cytidine deaminase (AID), the enzyme that initiates CSR. Here we report that AID is essential for the c-myc/IgH chromosome translocations induced by IL6.

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