| First Author | Ullah K | Year | 2017 |
| Journal | Sci Rep | Volume | 7 |
| Issue | 1 | Pages | 17220 |
| PubMed ID | 29222481 | Mgi Jnum | J:314943 |
| Mgi Id | MGI:6765171 | Doi | 10.1038/s41598-017-17376-0 |
| Citation | Ullah K, et al. (2017) Hypoxia-inducible factor prolyl-4-hydroxylase-1 is a convergent point in the reciprocal negative regulation of NF-kappaB and p53 signaling pathways. Sci Rep 7(1):17220 |
| abstractText | Hypoxia-inducible factor 1alpha (HIF1alpha) induces the expression of several hundred genes in hypoxia aiming at restoration of oxygen homeostasis. HIF prolyl-4-hydroxylases (HIF-P4Hs) regulate the stability of HIF1alpha in an oxygen-dependent manner. Hypoxia is a common feature in inflammation and cancer and the HIF pathway is closely linked with the inflammatory NF-kappaB and tumor suppressor p53 pathways. Here we show that genetic inactivation or chemical inhibition of HIF-P4H-1 leads to downregulation of proinflammatory genes, while proapoptotic genes are upregulated. HIF-P4H-1 inactivation reduces the inflammatory response under LPS stimulus in vitro and in an acute skin inflammation model in vivo. Furthermore, HIF-P4H-1 inactivation increases p53 activity and stability and hydroxylation of proline 142 in p53 has an important role in this regulation. Altogether, our data suggest that HIF-P4H-1 inhibition may be a promising therapeutic candidate for inflammatory diseases and cancer, enhancing the reciprocal negative regulation of the NF-kappaB and p53 pathways. |
