PMID- 18784753 OWN - NLM STAT- MEDLINE DCOM- 20081027 LR - 20211020 IS - 1460-2075 (Electronic) IS - 0261-4189 (Print) IS - 0261-4189 (Linking) VI - 27 IP - 19 DP - 2008 Oct 8 TI - CSB protein is (a direct target of HIF-1 and) a critical mediator of the hypoxic response. PG - 2545-56 LID - 10.1038/emboj.2008.180 [doi] AB - Cockayne syndrome (CS) is a rare genetic disease characterized by neurological problems, growth failure and premature ageing. Many of these features cannot simply be ascribed to the defect that CS cells display during transcription-coupled repair. Here, we show that CSB mutant cells are unable to react to hypoxic stimuli by properly activating the hypoxia-inducible factor-1 (HIF-1) pathway, a defect that is further enhanced in the event of a concomitant genotoxic stress. Furthermore, we show that CSB expression is under the control of HIF-1 and has a critical function during hypoxic response by redistributing p300 between HIF-1 and p53. Altogether, our data demonstrate that CSB is part of a feedback loop mechanism that modulates the biological functions of p53. The outcome of this study provides new insights into the understanding of the molecular basis of the CS phenotype and the involvement of the CSB protein in the hypoxic response pathway. FAU - Filippi, Silvia AU - Filippi S AD - Laboratory of Molecular Cytogenetics and Mutagenesis, Department ABAC, University of Tuscia, Viterbo, Italy. FAU - Latini, Paolo AU - Latini P FAU - Frontini, Mattia AU - Frontini M FAU - Palitti, Fabrizio AU - Palitti F FAU - Egly, Jean-Marc AU - Egly JM FAU - Proietti-De-Santis, Luca AU - Proietti-De-Santis L LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080911 PL - England TA - EMBO J JT - The EMBO journal JID - 8208664 RN - 0 (HIF1A protein, human) RN - 0 (Hypoxia-Inducible Factor 1, alpha Subunit) RN - 0 (Poly-ADP-Ribose Binding Proteins) RN - 0 (Tumor Suppressor Protein p53) RN - 0 (Vascular Endothelial Growth Factor A) RN - EC 2.3.1.48 (p300-CBP Transcription Factors) RN - EC 3.6.4.- (DNA Helicases) RN - EC 3.6.4.12 (ERCC6 protein, human) RN - EC 6.5.1.- (DNA Repair Enzymes) SB - IM MH - Animals MH - Base Sequence MH - Cell Cycle/physiology MH - Cell Line MH - Cockayne Syndrome/genetics MH - DNA Helicases/genetics/*metabolism MH - DNA Repair Enzymes/genetics/*metabolism MH - Gene Expression Regulation MH - Humans MH - *Hypoxia MH - Hypoxia-Inducible Factor 1, alpha Subunit/genetics/*metabolism MH - Molecular Sequence Data MH - Poly-ADP-Ribose Binding Proteins MH - RNA Interference MH - Signal Transduction/*physiology MH - Tumor Suppressor Protein p53/genetics/metabolism MH - Vascular Endothelial Growth Factor A/genetics/metabolism MH - p300-CBP Transcription Factors/genetics/metabolism PMC - PMC2567410 EDAT- 2008/09/12 09:00 MHDA- 2008/10/28 09:00 PMCR- 2009/10/08 CRDT- 2008/09/12 09:00 PHST- 2008/05/07 00:00 [received] PHST- 2008/08/14 00:00 [accepted] PHST- 2008/09/12 09:00 [pubmed] PHST- 2008/10/28 09:00 [medline] PHST- 2008/09/12 09:00 [entrez] PHST- 2009/10/08 00:00 [pmc-release] AID - emboj2008180 [pii] AID - 10.1038/emboj.2008.180 [doi] PST - ppublish SO - EMBO J. 2008 Oct 8;27(19):2545-56. doi: 10.1038/emboj.2008.180. Epub 2008 Sep 11.