PMID- 28747430 OWN - NLM STAT- MEDLINE DCOM- 20180831 LR - 20211025 IS - 1549-5477 (Electronic) IS - 0890-9369 (Print) IS - 0890-9369 (Linking) VI - 31 IP - 12 DP - 2017 Jun 15 TI - Ferredoxin reductase is critical for p53-dependent tumor suppression via iron regulatory protein 2. PG - 1243-1256 LID - 10.1101/gad.299388.117 [doi] AB - Ferredoxin reductase (FDXR), a target of p53, modulates p53-dependent apoptosis and is necessary for steroidogenesis and biogenesis of iron-sulfur clusters. To determine the biological function of FDXR, we generated a Fdxr-deficient mouse model and found that loss of Fdxr led to embryonic lethality potentially due to iron overload in developing embryos. Interestingly, mice heterozygous in Fdxr had a short life span and were prone to spontaneous tumors and liver abnormalities, including steatosis, hepatitis, and hepatocellular carcinoma. We also found that FDXR was necessary for mitochondrial iron homeostasis and proper expression of several master regulators of iron metabolism, including iron regulatory protein 2 (IRP2). Surprisingly, we found that p53 mRNA translation was suppressed by FDXR deficiency via IRP2. Moreover, we found that the signal from FDXR to iron homeostasis and the p53 pathway was transduced by ferredoxin 2, a substrate of FDXR. Finally, we found that p53 played a role in iron homeostasis and was required for FDXR-mediated iron metabolism. Together, we conclude that FDXR and p53 are mutually regulated and that the FDXR-p53 loop is critical for tumor suppression via iron homeostasis. CI - (c) 2017 Zhang et al.; Published by Cold Spring Harbor Laboratory Press. FAU - Zhang, Yanhong AU - Zhang Y AD - Comparative Oncology Laboratory, Schools of Veterinary Medicine and Medicine, University of California at Davis, Davis, California 95616, USA. FAU - Qian, Yingjuan AU - Qian Y AD - Comparative Oncology Laboratory, Schools of Veterinary Medicine and Medicine, University of California at Davis, Davis, California 95616, USA. AD - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210014, China. FAU - Zhang, Jin AU - Zhang J AD - Comparative Oncology Laboratory, Schools of Veterinary Medicine and Medicine, University of California at Davis, Davis, California 95616, USA. FAU - Yan, Wensheng AU - Yan W AD - Comparative Oncology Laboratory, Schools of Veterinary Medicine and Medicine, University of California at Davis, Davis, California 95616, USA. FAU - Jung, Yong-Sam AU - Jung YS AD - Comparative Oncology Laboratory, Schools of Veterinary Medicine and Medicine, University of California at Davis, Davis, California 95616, USA. AD - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210014, China. FAU - Chen, Mingyi AU - Chen M AD - Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA. FAU - Huang, Eric AU - Huang E AD - Department of Pathology, School of Medicine, University of California at Davis Health, Sacramento, California 95817, USA. FAU - Lloyd, Kent AU - Lloyd K AD - Department of Surgery, School of Medicine, University of California at Davis Health, Sacramento, California 95817, USA. FAU - Duan, Yuyou AU - Duan Y AD - Department of Dermatology and Internal Medicine, University of California at Davis Health, Sacramento, California 95616, USA. FAU - Wang, Jian AU - Wang J AD - Department of Pathology, School of Medicine, Wayne State University, Detroit, Michigan 48201 USA. FAU - Liu, Gang AU - Liu G AD - Department of Medicine, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA. FAU - Chen, Xinbin AU - Chen X AUID- ORCID: 0000-0002-4582-6506 AD - Comparative Oncology Laboratory, Schools of Veterinary Medicine and Medicine, University of California at Davis, Davis, California 95616, USA. LA - eng GR - P30 CA093373/CA/NCI NIH HHS/United States GR - R01 CA195828/CA/NCI NIH HHS/United States GR - R01 CA076069/CA/NCI NIH HHS/United States GR - R29 CA076069/CA/NCI NIH HHS/United States GR - R01 CA224433/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20170726 PL - United States TA - Genes Dev JT - Genes & development JID - 8711660 RN - 0 (Tumor Suppressor Protein p53) RN - E1UOL152H7 (Iron) RN - EC 1.18.1.2 (Ferredoxin-NADP Reductase) RN - EC 4.2.1.3 (Iron Regulatory Protein 2) SB - IM MH - Animals MH - Disease Models, Animal MH - Embryonic Development/genetics MH - Ferredoxin-NADP Reductase/genetics/*metabolism MH - Gene Expression Regulation/genetics MH - HCT116 Cells MH - Hep G2 Cells MH - Homeostasis/*genetics MH - Humans MH - Iron/metabolism MH - Iron Regulatory Protein 2/genetics/*metabolism MH - Liver Diseases/genetics MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Neoplasms/genetics MH - Protein Biosynthesis MH - Tumor Suppressor Protein p53/genetics/*metabolism PMC - PMC5558926 OTO - NOTNLM OT - FDX1 OT - FDX2 OT - FDXR OT - IRP2 OT - iron homeostasis OT - mRNA translation OT - p53 EDAT- 2017/07/28 06:00 MHDA- 2018/09/01 06:00 PMCR- 2017/12/15 CRDT- 2017/07/28 06:00 PHST- 2017/03/24 00:00 [received] PHST- 2017/06/26 00:00 [accepted] PHST- 2017/07/28 06:00 [pubmed] PHST- 2018/09/01 06:00 [medline] PHST- 2017/07/28 06:00 [entrez] PHST- 2017/12/15 00:00 [pmc-release] AID - gad.299388.117 [pii] AID - 10.1101/gad.299388.117 [doi] PST - ppublish SO - Genes Dev. 2017 Jun 15;31(12):1243-1256. doi: 10.1101/gad.299388.117. Epub 2017 Jul 26.