| First Author | Shang Y | Year | 2016 |
| Journal | Nat Immunol | Volume | 17 |
| Issue | 8 | Pages | 930-7 |
| PubMed ID | 27322654 | Mgi Jnum | J:260238 |
| Mgi Id | MGI:6140654 | Doi | 10.1038/ni.3486 |
| Citation | Shang Y, et al. (2016) The transcriptional repressor Hes1 attenuates inflammation by regulating transcription elongation. Nat Immunol 17(8):930-7 |
| abstractText | Most of the known regulatory mechanisms that curb inflammatory gene expression target pre-transcription-initiation steps, and evidence for post-initiation regulation of inflammatory gene expression remains scarce. We found that the transcriptional repressor Hes1 suppressed production of CXCL1, a chemokine that is crucial for recruiting neutrophils. Hes1 negatively regulated neutrophil recruitment in vivo in a manner that was dependent on macrophage-produced CXCL1, and it attenuated the severity of inflammatory arthritis. Mechanistically, inhibition of Cxcl1 expression by Hes1 did not involve modification of transcription initiation. Instead, Hes1 inhibited signal-induced recruitment of the positive transcription-elongation complex P-TEFb and thereby prevented phosphorylation of RNA polymerase II at Ser2 and productive elongation. Thus, our results identify Hes1 as a homeostatic suppressor of inflammatory responses that exerts its suppressive function by regulating transcription elongation. |
