PMID- 33006225 OWN - NLM STAT- MEDLINE DCOM- 20210427 LR - 20220531 IS - 1469-3178 (Electronic) IS - 1469-221X (Print) IS - 1469-221X (Linking) VI - 21 IP - 11 DP - 2020 Nov 5 TI - Ewing sarcoma protein promotes dissociation of poly(ADP-ribose) polymerase 1 from chromatin. PG - e48676 LID - 10.15252/embr.201948676 [doi] LID - e48676 AB - Poly(ADP-ribose) polymerase 1 (PARP1) facilitates DNA damage response (DDR). While the Ewing's sarcoma breakpoint region 1 (EWS) protein fused to FLI1 triggers sarcoma formation, the physiological function of EWS is largely unknown. Here, we investigate the physiological role of EWS in regulating PARP1. We show that EWS is required for PARP1 dissociation from damaged DNA. Abnormal PARP1 accumulation caused by EWS inactivation leads to excessive Poly(ADP-Ribosy)lation (PARylation) and triggers cell death in both in vitro and in vivo models. Consistent with previous work, the arginine-glycine-glycine (RGG) domain of EWS is essential for PAR chain interaction and PARP1 dissociation from damaged DNA. Ews and Parp1 double mutant mice do not show improved survival, but supplementation with nicotinamide mononucleotides extends Ews-mutant pups' survival, which might be due to compensatory activation of other PARP proteins. Consistently, PARP1 accumulates on chromatin in Ewing's sarcoma cells expressing an EWS fusion protein that cannot interact with PARP1, and tissues derived from Ewing's sarcoma patients show increased PARylation. Taken together, our data reveal that EWS is important for removing PARP1 from damaged chromatin. CI - (c) 2020 The Authors. FAU - Lee, Seon-Gyeong AU - Lee SG AD - Center for Genomic Integrity, Institute for Basic Science, Ulsan, Korea. AD - Department of Biological Sciences, School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Korea. FAU - Kim, Namwoo AU - Kim N AD - Center for Genomic Integrity, Institute for Basic Science, Ulsan, Korea. AD - Department of Biological Sciences, School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Korea. FAU - Kim, Su-Min AU - Kim SM AD - Center for Genomic Integrity, Institute for Basic Science, Ulsan, Korea. AD - Department of Biological Sciences, School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Korea. FAU - Park, In Bae AU - Park IB AD - Center for Genomic Integrity, Institute for Basic Science, Ulsan, Korea. FAU - Kim, Hyejin AU - Kim H AD - Center for Genomic Integrity, Institute for Basic Science, Ulsan, Korea. FAU - Kim, Shinseog AU - Kim S AD - Center for Genomic Integrity, Institute for Basic Science, Ulsan, Korea. FAU - Kim, Byung-Gyu AU - Kim BG AD - Center for Genomic Integrity, Institute for Basic Science, Ulsan, Korea. FAU - Hwang, Jung Me AU - Hwang JM AD - Center for Genomic Integrity, Institute for Basic Science, Ulsan, Korea. FAU - Baek, In-Joon AU - Baek IJ AUID- ORCID: 0000-0001-7286-3831 AD - Center for Genomic Integrity, Institute for Basic Science, Ulsan, Korea. FAU - Gartner, Anton AU - Gartner A AD - Center for Genomic Integrity, Institute for Basic Science, Ulsan, Korea. AD - Department of Biological Sciences, School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Korea. FAU - Park, Jun Hong AU - Park JH AUID- ORCID: 0000-0001-8905-4125 AD - Center for Genomic Integrity, Institute for Basic Science, Ulsan, Korea. AD - Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju, Korea. FAU - Myung, Kyungjae AU - Myung K AUID- ORCID: 0000-0001-7975-6190 AD - Center for Genomic Integrity, Institute for Basic Science, Ulsan, Korea. AD - Department of Biological Sciences, School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Korea. LA - eng GR - IBS-R022-D1/Institute for Basic Science (IBS)/ PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20201001 PL - England TA - EMBO Rep JT - EMBO reports JID - 100963049 RN - 0 (Chromatin) RN - 0 (RNA-Binding Protein EWS) RN - EC 2.4.2.30 (Parp1 protein, mouse) RN - EC 2.4.2.30 (Poly (ADP-Ribose) Polymerase-1) SB - IM MH - Animals MH - Chromatin/genetics MH - DNA Damage MH - Dissociative Disorders MH - Humans MH - Mice MH - Poly (ADP-Ribose) Polymerase-1 MH - RNA-Binding Protein EWS/genetics/metabolism MH - *Sarcoma, Ewing/genetics PMC - PMC7645264 OTO - NOTNLM OT - EWS OT - PAR OT - DNA damage response OT - PARP-1 OT - PARylation COIS- The authors declare that they have no conflict of interest. EDAT- 2020/10/03 06:00 MHDA- 2021/04/28 06:00 PMCR- 2021/11/05 CRDT- 2020/10/02 05:50 PHST- 2019/06/16 00:00 [received] PHST- 2020/08/30 00:00 [revised] PHST- 2020/09/15 00:00 [accepted] PHST- 2020/10/03 06:00 [pubmed] PHST- 2021/04/28 06:00 [medline] PHST- 2020/10/02 05:50 [entrez] PHST- 2021/11/05 00:00 [pmc-release] AID - EMBR201948676 [pii] AID - 10.15252/embr.201948676 [doi] PST - ppublish SO - EMBO Rep. 2020 Nov 5;21(11):e48676. doi: 10.15252/embr.201948676. Epub 2020 Oct 1.