| First Author | Lu T | Year | 2010 |
| Journal | Proc Natl Acad Sci U S A | Volume | 107 |
| Issue | 1 | Pages | 46-51 |
| PubMed ID | 20080798 | Mgi Jnum | J:156513 |
| Mgi Id | MGI:4420824 | Doi | 10.1073/pnas.0912493107 |
| Citation | Lu T, et al. (2010) Regulation of NF-kappaB by NSD1/FBXL11-dependent reversible lysine methylation of p65. Proc Natl Acad Sci U S A 107(1):46-51 |
| abstractText | NF-kappaB, a central coordinator of immune and inflammatory responses, must be tightly regulated. We describe a NF-kappaB regulatory pathway that is driven by reversible lysine methylation of the p65 subunit, carried out by a lysine methylase, the nuclear receptor-binding SET domain-containing protein 1 (NSD1), and a lysine demethylase, F-box and leucine-rich repeat protein 11 (FBXL11). Overexpression of FBXL11 inhibits NF-kappaB activity, and a high level of NSD1 activates NF-kappaB and reverses the inhibitory effect of FBXL11, whereas reduced expression of NSD1 decreases NF-kappaB activation. The targets are K218 and K221 of p65, which are methylated in cells with activated NF-kappaB. Overexpression of FBXL11 slowed the growth of HT29 cancer cells, whereas shRNA-mediated knockdown had the opposite effect, and these phenotypes were dependent on K218/K221 methylation. In mouse embryo fibroblasts, the activation of most p65-dependent genes relied on K218/K221 methylation. Importantly, expression of the FBXL11 gene is driven by NF-kappaB, revealing a negative regulatory feedback loop. We conclude that reversible lysine methylation of NF-kappaB is an important element in the complex regulation of this key transcription factor. |
