First Author | Mok Y | Year | 2013 |
Journal | J Immunol | Volume | 191 |
Issue | 6 | Pages | 3037-3048 |
PubMed ID | 23960236 | Mgi Jnum | J:205868 |
Mgi Id | MGI:5546553 | Doi | 10.4049/jimmunol.1301289 |
Citation | Mok Y, et al. (2013) MiR-210 is induced by Oct-2, regulates B cells, and inhibits autoantibody production. J Immunol 191(6):3037-48 |
abstractText | MicroRNAs (MiRs) are small, noncoding RNAs that regulate gene expression posttranscriptionally. In this study, we show that MiR-210 is induced by Oct-2, a key transcriptional mediator of B cell activation. Germline deletion of MiR-210 results in the development of autoantibodies from 5 mo of age. Overexpression of MiR-210 in vivo resulted in cell autonomous expansion of the B1 lineage and impaired fitness of B2 cells. Mice overexpressing MiR-210 exhibited impaired class-switched Ab responses, a finding confirmed in wild-type B cells transfected with a MiR-210 mimic. In vitro studies demonstrated defects in cellular proliferation and cell cycle entry, which were consistent with the transcriptomic analysis demonstrating downregulation of genes involved in cellular proliferation and B cell activation. These findings indicate that Oct-2 induction of MiR-210 provides a novel inhibitory mechanism for the control of B cells and autoantibody production. |