PMID- 12819299 OWN - NLM STAT- MEDLINE DCOM- 20040511 LR - 20061115 IS - 0888-8809 (Print) IS - 0888-8809 (Linking) VI - 17 IP - 9 DP - 2003 Sep TI - Heterozygous Men1 mutant mice develop a range of endocrine tumors mimicking multiple endocrine neoplasia type 1. PG - 1880-92 AB - Multiple endocrine neoplasia type 1 (MEN1) is a hereditary syndrome characterized by the occurrence of multiple endocrine tumors of the parathyroid, pancreas, and anterior pituitary in patients. To study tumorigenesis related to the MEN1 syndrome, we have generated Men1 knockout mice using the gene targeting approach. Heterozygous Men1 mutant mice developed the same range of major endocrine tumors as is seen in MEN1 patients, affecting the parathyroid, pancreatic islets, pituitary and adrenal glands, as well as the thyroid, and exhibiting multistage tumor progression with metastatic potential. In particular, extrapancreatic gastrinoma, pancreatic glucagonoma, and mixed hormone-producing tumors in islets were observed. In addition, there was a high incidence of gonadal tumors of endocrine origin, i.e. Leydig cell tumors, and ovary sex-cord stromal cell tumors in heterozygous Men1 mutant mice. Hormonal disturbance, such as abnormal PTH and insulin levels, was also observed in these mice. These tumors were associated with loss of heterozygosity of the wild-type Men1 allele, suggesting that menin is involved in suppressing the development of these endocrine tumors. All of these features are reminiscent of MEN1 symptoms in humans and establish heterozygous Men1 mutant mice as a suitable model for this disease. FAU - Bertolino, Philippe AU - Bertolino P AD - Laboratory of Genetics, Centre National de la Recherche Scientifique, Faculty of Medicine, University of Lyon, Lyon, France. FAU - Tong, Wei-Min AU - Tong WM FAU - Galendo, Dominique AU - Galendo D FAU - Wang, Zhao-Qi AU - Wang ZQ FAU - Zhang, Chang-Xian AU - Zhang CX LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20030620 PL - United States TA - Mol Endocrinol JT - Molecular endocrinology (Baltimore, Md.) JID - 8801431 RN - 0 (Men1 protein, mouse) RN - 0 (Proto-Oncogene Proteins) SB - IM MH - Animals MH - *Disease Models, Animal MH - Endocrine System/pathology MH - Genes, Dominant MH - Heterozygote MH - Mice MH - Multiple Endocrine Neoplasia Type 1/*genetics/metabolism MH - Mutation MH - Proto-Oncogene Proteins/*genetics/metabolism EDAT- 2003/06/24 05:00 MHDA- 2004/05/12 05:00 CRDT- 2003/06/24 05:00 PHST- 2003/06/24 05:00 [pubmed] PHST- 2004/05/12 05:00 [medline] PHST- 2003/06/24 05:00 [entrez] AID - me.2003-0154 [pii] AID - 10.1210/me.2003-0154 [doi] PST - ppublish SO - Mol Endocrinol. 2003 Sep;17(9):1880-92. doi: 10.1210/me.2003-0154. Epub 2003 Jun 20.