PMID- 18310293 OWN - NLM STAT- MEDLINE DCOM- 20080508 LR - 20211020 IS - 1351-0088 (Print) IS - 1479-6821 (Electronic) IS - 1351-0088 (Linking) VI - 15 IP - 1 DP - 2008 Mar TI - Parathyroid tumor development involves deregulation of homeobox genes. PG - 267-75 LID - 10.1677/ERC-07-0191 [doi] AB - Multiple endocrine neoplasia type 1 (MEN1) is an autosomal dominant syndrome caused by mutations in the MEN1 tumor suppressor gene. Loss of the functional second copy of the MEN1 gene causes individuals to develop multiple endocrine tumors, primarily affecting the parathyroid, pituitary, and pancreas. While it is clear that the protein encoded by MEN1, menin, suppresses endocrine tumors, its biochemical functions and direct downstream targets remain unclear. Recent studies have suggested that menin may act as a scaffold protein to coordinate gene transcription, and that menin is an oncogenic cofactor for homeobox (HOX) gene expression in hematopoietic cancer. The role of HOX genes in adult cell differentiation is still obscure, but growing evidence suggests that they may play important roles in the development of cancer. Therefore, we hypothesized that specific HOX genes were regulated by menin in parathyroid tumor development. Utilizing quantitative TaqMan RT-PCR, we compared expression profiles of the 39 HOX genes in human familial MEN1 (fMEN1) parathyroid tumors and sporadic parathyroid adenomas with normal samples. We identified a large set of 23 HOX genes whose deregulation is specific for fMEN1 parathyroid tumors, and only 5 HOX genes whose misexpression are specific for sporadic parathyroid tumor development. These findings provide the first evidence that loss of the MEN1 tumor suppressor gene is associated with deregulation of specific HOX gene expression in the development of familial human parathyroid tumors. Our results strongly reinforce the idea that abnormal expression of developmental HOX genes can be critical in human cancer progression. FAU - Shen, H-C Jennifer AU - Shen HC AD - Tumor Angiogenesis Section, Surgery Branch, National Cancer Institute, NIH, Bethesda, MD 20892, USA. FAU - Rosen, Jennifer E AU - Rosen JE FAU - Yang, Lauren M AU - Yang LM FAU - Savage, Sharon A AU - Savage SA FAU - Burns, A Lee AU - Burns AL FAU - Mateo, Carmen M AU - Mateo CM FAU - Agarwal, Sunita K AU - Agarwal SK FAU - Chandrasekharappa, Settara C AU - Chandrasekharappa SC FAU - Spiegel, Allen M AU - Spiegel AM FAU - Collins, Francis S AU - Collins FS FAU - Marx, Stephen J AU - Marx SJ FAU - Libutti, Steven K AU - Libutti SK LA - eng GR - ZIA CP010142-11/ImNIH/Intramural NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Intramural PL - England TA - Endocr Relat Cancer JT - Endocrine-related cancer JID - 9436481 RN - 0 (MEN1 protein, human) RN - 0 (Proto-Oncogene Proteins) RN - 0 (RNA, Messenger) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Female MH - Gene Expression Regulation, Neoplastic MH - Genes, Homeobox/*genetics MH - Genetic Predisposition to Disease MH - Humans MH - Male MH - Middle Aged MH - Multiple Endocrine Neoplasia Type 1/*genetics/metabolism/pathology MH - Mutation/*genetics MH - Parathyroid Neoplasms/genetics/*metabolism/*pathology MH - Proto-Oncogene Proteins/*genetics/metabolism MH - RNA, Messenger/genetics/metabolism MH - Reverse Transcriptase Polymerase Chain Reaction PMC - PMC3133970 MID - NIHMS301793 EDAT- 2008/03/04 09:00 MHDA- 2008/05/09 09:00 PMCR- 2011/07/12 CRDT- 2008/03/04 09:00 PHST- 2008/03/04 09:00 [pubmed] PHST- 2008/05/09 09:00 [medline] PHST- 2008/03/04 09:00 [entrez] PHST- 2011/07/12 00:00 [pmc-release] AID - 15/1/267 [pii] AID - 10.1677/ERC-07-0191 [doi] PST - ppublish SO - Endocr Relat Cancer. 2008 Mar;15(1):267-75. doi: 10.1677/ERC-07-0191.