PMID- 23652667 OWN - NLM STAT- MEDLINE DCOM- 20131216 LR - 20211021 IS - 1662-3762 (Electronic) IS - 0301-3073 (Print) IS - 0301-3073 (Linking) VI - 41 DP - 2013 TI - Multiple endocrine neoplasia type 1. PG - 1-15 LID - 10.1159/000345666 [doi] AB - Multiple endocrine neoplasia type 1 (MEN1) is an autosomal-dominant tumor syndrome characterized by the occurrence of tumors in multiple endocrine tissues and nonendocrine tissues. The three main endocrine tissues most frequently affected by tumors are parathyroid (95%), enteropancreatic neuroendocrine (50%) and anterior pituitary (40%). Tumors are caused by a heterozygous germline-inactivating mutation in the MEN1 gene (1st hit) followed by somatic inactivating mutation or loss of the normal copy of the gene (2nd hit), leading to complete loss of function of the encoded protein menin. Most of the disease features and tumors are recapitulated in mouse models with heterozygous germline loss of the Men1 gene. Also, tissue-specific tumors are observed in mouse models with homozygous somatic loss of the Men1 gene specifically in MEN1-associated endocrine tissues. Hence, mouse models could serve as possible surrogates for studying MEN1 and related states. To gain insights into MEN1 pathophysiology, menin-interacting partners and pathways have been identified to investigate its tumor suppressor and other functions. Also, the 3D crystal structure of menin has been deciphered which could be useful to reveal the relevance of MEN1 gene mutations and menin's interactions. This chapter covers clinical, genetic and basic findings about the MEN1 syndrome, MEN1 gene and its product protein menin. CI - Copyright (c) 2013 S. Karger AG, Basel. FAU - Agarwal, Sunita K AU - Agarwal SK AD - Metabolic Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD 20892, USA. SunitaA @ mail.nih.gov LA - eng GR - ZIA DK075035/ImNIH/Intramural NIH HHS/United States GR - ZIA DK075035-03/ImNIH/Intramural NIH HHS/United States GR - 1ZIADK075035-03/PHS HHS/United States PT - Journal Article PT - Research Support, N.I.H., Intramural PT - Review DEP - 20130319 PL - Switzerland TA - Front Horm Res JT - Frontiers of hormone research JID - 0320246 RN - 0 (JunD protein, human) RN - 0 (KMT2A protein, human) RN - 0 (MEN1 protein, human) RN - 0 (Men1 protein, mouse) RN - 0 (Proto-Oncogene Proteins) RN - 0 (Proto-Oncogene Proteins c-jun) RN - 149025-06-9 (Myeloid-Lymphoid Leukemia Protein) RN - EC 2.1.1.43 (Histone-Lysine N-Methyltransferase) SB - IM MH - Adenoma/genetics MH - Adult MH - Animals MH - Cell Line, Tumor MH - Crystallography, X-Ray MH - Genes, Tumor Suppressor MH - Germ-Line Mutation MH - Histone-Lysine N-Methyltransferase MH - Humans MH - Loss of Heterozygosity MH - Mice MH - Mice, Knockout MH - Multiple Endocrine Neoplasia Type 1/*genetics MH - Myeloid-Lymphoid Leukemia Protein/metabolism MH - Parathyroid Neoplasms/etiology MH - Proto-Oncogene Proteins/chemistry/*genetics/metabolism MH - Proto-Oncogene Proteins c-jun/metabolism PMC - PMC6281166 MID - NIHMS996873 EDAT- 2013/05/09 06:00 MHDA- 2013/12/18 06:00 PMCR- 2018/12/05 CRDT- 2013/05/09 06:00 PHST- 2013/05/09 06:00 [entrez] PHST- 2013/05/09 06:00 [pubmed] PHST- 2013/12/18 06:00 [medline] PHST- 2018/12/05 00:00 [pmc-release] AID - 000345666 [pii] AID - 10.1159/000345666 [doi] PST - ppublish SO - Front Horm Res. 2013;41:1-15. doi: 10.1159/000345666. Epub 2013 Mar 19.