Journal
MOLECULAR CELL
Volume 41, Issue 2, Pages 232-242Publisher
CELL PRESS
DOI: 10.1016/j.molcel.2011.01.007
Keywords
-
Categories
Funding
- NIH [RO1 AI23283]
- Cancer Research Institute
Ask authors/readers for more resources
After immunization or infection, activation-induced cytidine deaminase (AID) initiates diversification of immunoglobulin (Ig) genes in B cells, introducing mutations within the antigen-binding V regions (somatic hypermutation, SHM) and double-strand DNA breaks (DSBs) into switch (S) regions, leading to antibody class switch recombination (CSR). We asked if, during B cell activation, AID also induces DNA breaks at genes other than IgH genes. Using a nonbiased genome-wide approach, we have identified hundreds of reproducible, AID-dependent DSBs in mouse splenic B cells shortly after induction of CSR in culture. Most interestingly, AID induces DSBs at sites syntenic with sites of translocations, deletions, and amplifications found in human B cell lymphomas, including within the oncogene B cell lymphoma11a (bcl11a)/evi9. Unlike AID-induced DSBs in Ig genes, genome-wide AID-dependent DSBs are not restricted to transcribed regions and frequently occur within repeated sequence elements, including CA repeats, non-CA tandem repeats, and SINEs.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available