PMID- 17636019 OWN - NLM STAT- MEDLINE DCOM- 20080122 LR - 20220317 IS - 0270-7306 (Print) IS - 1098-5549 (Electronic) IS - 0270-7306 (Linking) VI - 27 IP - 19 DP - 2007 Oct TI - Epigenetic regulation of protein-coding and microRNA genes by the Gfi1-interacting tumor suppressor PRDM5. PG - 6889-902 AB - Gfi1 transcriptionally governs hematopoiesis, and its mutations produce neutropenia. In an effort to identify Gfi1-interacting proteins and also to generate new candidate genes causing neutropenia, we performed a yeast two-hybrid screen with Gfi1. Among other Gfi1-interacting proteins, we identified a previously uncharacterized member of the PR domain-containing family of tumor suppressors, PRDM5. PRDM5 has 16 zinc fingers, and we show that it acts as a sequence-specific, DNA binding transcription factor that targets hematopoiesis-associated protein-coding and microRNA genes, including many that are also targets of Gfi1. PRDM5 epigenetically regulates transcription similarly to Gfi1: it recruits the histone methyltransferase G9a and class I histone deacetylases to its target gene promoters and demonstrates repressor activity on synthetic reporters; on endogenous target genes, however, it functions as an activator, in addition to a repressor. Interestingly, genes that PRDM5 activates, as opposed to those it represses, are also targets of Gfi1, suggesting a competitive mechanism through which two repressors could cooperate in order to become transcriptional activators. In neutropenic patients, we identified PRDM5 protein sequence variants perturbing transcriptional function, suggesting a potentially important role in hematopoiesis. FAU - Duan, Zhijun AU - Duan Z AD - Division of Medical Genetics, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA. FAU - Person, Richard E AU - Person RE FAU - Lee, Hu-Hui AU - Lee HH FAU - Huang, Shi AU - Huang S FAU - Donadieu, Jean AU - Donadieu J FAU - Badolato, Raffaele AU - Badolato R FAU - Grimes, H Leighton AU - Grimes HL FAU - Papayannopoulou, Thalia AU - Papayannopoulou T FAU - Horwitz, Marshall S AU - Horwitz MS LA - eng GR - R01 HL079507/HL/NHLBI NIH HHS/United States GR - CA112405/CA/NCI NIH HHS/United States GR - R01 HL079574/HL/NHLBI NIH HHS/United States GR - R01 CA112405/CA/NCI NIH HHS/United States GR - DK58161/DK/NIDDK NIH HHS/United States GR - HL079574/HL/NHLBI NIH HHS/United States GR - HL79507/HL/NHLBI NIH HHS/United States GR - R01 DK058161/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20070716 PL - United States TA - Mol Cell Biol JT - Molecular and cellular biology JID - 8109087 RN - 0 (DNA-Binding Proteins) RN - 0 (GFI1 protein, human) RN - 0 (MicroRNAs) RN - 0 (PRDM5 protein, human) RN - 0 (Transcription Factors) RN - EC 2.1.1.- (Histone Methyltransferases) RN - EC 2.1.1.- (Protein Methyltransferases) RN - EC 2.1.1.43 (Histone-Lysine N-Methyltransferase) RN - EC 3.5.1.98 (HDAC1 protein, human) RN - EC 3.5.1.98 (Histone Deacetylase 1) RN - EC 3.5.1.98 (Histone Deacetylases) SB - IM MH - Cell Cycle/physiology MH - Cell Line MH - DNA-Binding Proteins/genetics/*metabolism MH - *Epigenesis, Genetic MH - *Gene Expression Regulation MH - Hematopoiesis/physiology MH - Histone Deacetylase 1 MH - Histone Deacetylases/genetics/metabolism MH - Histone Methyltransferases MH - Histone-Lysine N-Methyltransferase/metabolism MH - Humans MH - MicroRNAs/*genetics/metabolism MH - Molecular Sequence Data MH - Neutropenia/genetics/metabolism MH - Promoter Regions, Genetic MH - Protein Methyltransferases MH - RNA Interference MH - Transcription Factors/genetics/*metabolism MH - Transcription, Genetic MH - Two-Hybrid System Techniques MH - Zinc Fingers PMC - PMC2099216 EDAT- 2007/07/20 09:00 MHDA- 2008/01/23 09:00 PMCR- 2008/02/01 CRDT- 2007/07/20 09:00 PHST- 2007/07/20 09:00 [pubmed] PHST- 2008/01/23 09:00 [medline] PHST- 2007/07/20 09:00 [entrez] PHST- 2008/02/01 00:00 [pmc-release] AID - MCB.00762-07 [pii] AID - 0762-07 [pii] AID - 10.1128/MCB.00762-07 [doi] PST - ppublish SO - Mol Cell Biol. 2007 Oct;27(19):6889-902. doi: 10.1128/MCB.00762-07. Epub 2007 Jul 16.