PMID- 7849701 OWN - NLM STAT- MEDLINE DCOM- 19950316 LR - 20220408 IS - 0964-6906 (Print) IS - 0964-6906 (Linking) VI - 3 IP - 10 DP - 1994 Oct TI - The phospholipase C beta 3 gene located in the MEN1 region shows loss of expression in endocrine tumours. PG - 1775-81 AB - Oncogenesis of tumours related to multiple endocrine neoplasia type 1 (MEN1) is associated with somatic deletions involving the MEN1 locus, suggesting inactivation of a tumour suppressor gene in this region. Identification of meiotic cross-overs in MEN1 families has placed the MEN1 locus centromeric of D11S807. An extended deletion mapping was performed in 27 primary parathyroid tumours, and identified D11S427 as the closest centromeric flanking marker. Through physical mapping using newly isolated cDNA clones, we estimated the distance between the flanking markers D11S807 and D11S427 to be less than 900 kb. One of these cDNA clones showed expression of a 4.4 kb message in multiple tissues, including those affected in MEN1, while in five endocrine tumours no transcript was detected. Sequence characterization showed that this gene encodes for the phospholipase C beta 3, a key enzyme in signal transduction. FAU - Weber, G AU - Weber G AD - Department of Clinical Genetics, Karolinska Hospital, Stockholm, Sweden. FAU - Friedman, E AU - Friedman E FAU - Grimmond, S AU - Grimmond S FAU - Hayward, N K AU - Hayward NK FAU - Phelan, C AU - Phelan C FAU - Skogseid, B AU - Skogseid B FAU - Gobl, A AU - Gobl A FAU - Zedenius, J AU - Zedenius J FAU - Sandelin, K AU - Sandelin K FAU - Teh, B T AU - Teh BT AU - et al. LA - eng SI - GENBANK/Z26649 PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Hum Mol Genet JT - Human molecular genetics JID - 9208958 RN - 0 (DNA Primers) RN - 0 (DNA, Complementary) RN - 0 (Genetic Markers) RN - 0 (Isoenzymes) RN - 0 (RNA Probes) RN - EC 3.1.4.- (Type C Phospholipases) SB - IM MH - Blotting, Northern MH - Centromere MH - *Chromosome Deletion MH - Chromosome Mapping MH - *Chromosomes, Human, Pair 11 MH - Cloning, Molecular MH - DNA Primers MH - DNA, Complementary/isolation & purification MH - Female MH - *Gene Expression MH - Genetic Markers MH - Humans MH - In Situ Hybridization MH - In Situ Hybridization, Fluorescence MH - Isoenzymes/biosynthesis/genetics MH - Male MH - Molecular Sequence Data MH - Multiple Endocrine Neoplasia Type 1/enzymology/*genetics MH - Organ Specificity MH - Pancreas/enzymology MH - Parathyroid Neoplasms/genetics MH - Polymerase Chain Reaction MH - RNA Probes MH - Signal Transduction MH - Transcription, Genetic MH - Type C Phospholipases/biosynthesis/*genetics EDAT- 1994/10/01 00:00 MHDA- 1994/10/01 00:01 CRDT- 1994/10/01 00:00 PHST- 1994/10/01 00:00 [pubmed] PHST- 1994/10/01 00:01 [medline] PHST- 1994/10/01 00:00 [entrez] AID - 10.1093/hmg/3.10.1775 [doi] PST - ppublish SO - Hum Mol Genet. 1994 Oct;3(10):1775-81. doi: 10.1093/hmg/3.10.1775.