PMID- 25537453 OWN - NLM STAT- MEDLINE DCOM- 20160204 LR - 20201218 IS - 1557-3125 (Electronic) IS - 1541-7786 (Linking) VI - 13 IP - 4 DP - 2015 Apr TI - Dynamic epigenetic regulation by menin during pancreatic islet tumor formation. PG - 689-98 LID - 10.1158/1541-7786.MCR-14-0457 [doi] AB - The tumor suppressor gene MEN1 is frequently mutated in sporadic pancreatic neuroendocrine tumors (PanNET) and is responsible for the familial multiple endocrine neoplasia type 1 (MEN-1) cancer syndrome. Menin, the protein product of MEN1, associates with the histone methyltransferases (HMT) MLL1 (KMT2A) and MLL4 (KMT2B) to form menin-HMT complexes in both human and mouse model systems. To elucidate the role of methylation of histone H3 at lysine 4 (H3K4) mediated by menin-HMT complexes during PanNET formation, genome-wide histone H3 lysine 4 trimethylation (H3K4me3) signals were mapped in pancreatic islets using unbiased chromatin immunoprecipitation coupled with next-generation sequencing (ChIP-seq). Integrative analysis of gene expression profiles and histone H3K4me3 levels identified a number of transcripts and target genes dependent on menin. In the absence of Men1, histone H3K27me3 levels are enriched, with a concomitant decrease in H3K4me3 within the promoters of these target genes. In particular, expression of the insulin-like growth factor 2 mRNA binding protein 2 (IGF2BP2) gene is subject to dynamic epigenetic regulation by Men1-dependent histone modification in a time-dependent manner. Decreased expression of IGF2BP2 in Men1-deficient hyperplastic pancreatic islets is partially reversed by ablation of RBP2 (KDM5A), a histone H3K4-specific demethylase of the jumonji, AT-rich interactive domain 1 (JARID1) family. Taken together, these data demonstrate that loss of Men1 in pancreatic islet cells alters the epigenetic landscape of its target genes. IMPLICATIONS: Epigenetic profiling and gene expression analysis in Men1-deficient pancreatic islet cells reveals vital insight into the molecular events that occur during the progression of pancreatic islet tumorigenesis. CI - (c)2014 American Association for Cancer Research. FAU - Lin, Wenchu AU - Lin W AD - Department of Medical Oncology, Center for Cancer Genome Discovery, Dana-Farber Cancer Institute, Boston, Massachusetts. Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. Cancer program, Broad Institute of Harvard and MIT, Cambridge, Massachusetts. High Magnetic Field Laboratory, Chinese Academy of Sciences, 350 Shushanhu RD, Hefei, Anhui Province, 230031, P. R. China. FAU - Watanabe, Hideo AU - Watanabe H AD - Department of Medical Oncology, Center for Cancer Genome Discovery, Dana-Farber Cancer Institute, Boston, Massachusetts. Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. Cancer program, Broad Institute of Harvard and MIT, Cambridge, Massachusetts. FAU - Peng, Shouyong AU - Peng S AD - Department of Medical Oncology, Center for Cancer Genome Discovery, Dana-Farber Cancer Institute, Boston, Massachusetts. Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. Cancer program, Broad Institute of Harvard and MIT, Cambridge, Massachusetts. FAU - Francis, Joshua M AU - Francis JM AD - Department of Medical Oncology, Center for Cancer Genome Discovery, Dana-Farber Cancer Institute, Boston, Massachusetts. Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. Cancer program, Broad Institute of Harvard and MIT, Cambridge, Massachusetts. FAU - Kaplan, Nathan AU - Kaplan N AD - Department of Medical Oncology, Center for Cancer Genome Discovery, Dana-Farber Cancer Institute, Boston, Massachusetts. Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. Cancer program, Broad Institute of Harvard and MIT, Cambridge, Massachusetts. FAU - Pedamallu, Chandra Sekhar AU - Pedamallu CS AD - Department of Medical Oncology, Center for Cancer Genome Discovery, Dana-Farber Cancer Institute, Boston, Massachusetts. Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. Cancer program, Broad Institute of Harvard and MIT, Cambridge, Massachusetts. FAU - Ramachandran, Aruna AU - Ramachandran A AD - Department of Medical Oncology, Center for Cancer Genome Discovery, Dana-Farber Cancer Institute, Boston, Massachusetts. Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. Cancer program, Broad Institute of Harvard and MIT, Cambridge, Massachusetts. FAU - Agoston, Agoston AU - Agoston A AD - Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. FAU - Bass, Adam J AU - Bass AJ AD - Department of Medical Oncology, Center for Cancer Genome Discovery, Dana-Farber Cancer Institute, Boston, Massachusetts. Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. Cancer program, Broad Institute of Harvard and MIT, Cambridge, Massachusetts. FAU - Meyerson, Matthew AU - Meyerson M AD - Department of Medical Oncology, Center for Cancer Genome Discovery, Dana-Farber Cancer Institute, Boston, Massachusetts. Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. Cancer program, Broad Institute of Harvard and MIT, Cambridge, Massachusetts. matthew_meyerson@dfci.harvard.edu. LA - eng PT - Journal Article DEP - 20141223 PL - United States TA - Mol Cancer Res JT - Molecular cancer research : MCR JID - 101150042 RN - 0 (Histones) RN - 0 (IGF2BP2 protein, mouse) RN - 0 (Men1 protein, mouse) RN - 0 (Proto-Oncogene Proteins) RN - 0 (RNA-Binding Proteins) SB - IM MH - Adenoma, Islet Cell MH - Animals MH - *Epigenesis, Genetic MH - Gene Expression Profiling MH - Gene Expression Regulation, Neoplastic MH - Histones/metabolism MH - Humans MH - Methylation MH - Mice MH - Molecular Sequence Data MH - Neuroendocrine Tumors/*genetics/*pathology MH - Proto-Oncogene Proteins/*genetics MH - RNA-Binding Proteins/*genetics EDAT- 2014/12/30 06:00 MHDA- 2016/02/05 06:00 CRDT- 2014/12/25 06:00 PHST- 2014/08/18 00:00 [received] PHST- 2014/11/26 00:00 [accepted] PHST- 2014/12/25 06:00 [entrez] PHST- 2014/12/30 06:00 [pubmed] PHST- 2016/02/05 06:00 [medline] AID - 1541-7786.MCR-14-0457 [pii] AID - 10.1158/1541-7786.MCR-14-0457 [doi] PST - ppublish SO - Mol Cancer Res. 2015 Apr;13(4):689-98. doi: 10.1158/1541-7786.MCR-14-0457. Epub 2014 Dec 23.