PMID- 1363801 OWN - NLM STAT- MEDLINE DCOM- 19930607 LR - 20190509 IS - 0964-6906 (Print) IS - 0964-6906 (Linking) VI - 1 IP - 6 DP - 1992 Sep TI - Molecular dissection of the Prader-Willi/Angelman syndrome region (15q11-13) by YAC cloning and FISH analysis. PG - 417-25 AB - Prader-Willi syndrome (PWS) and Angelman syndrome (AS) are distinct mental retardation disorders associated with deletions of proximal 15q (q11-q13) of different parental origin. Yeast artificial chromosome (YAC) clones were isolated for 9 previously mapped DNA probes from this region, and for one newly derived marker, LS6-1 (D15S113). A YAC contig of 1-1.5 Mb encompassing four markers (ML34, IR4-3R, PW71, and TD189-1) was constructed. Multi-color fluorescence in situ hybridization (FISH) analysis of interphase nuclei was combined with YAC contig information to provide the following order of markers: cen-IR39-ML34-IR4-3R-PW71-TD189-1-LS6++ +-1-TD3-21-GABRB3-IR10-1-CMW1-tel. FISH analysis was performed on 8 cases of PWS and 3 cases of AS, including 5 patients with normal karyotypes. All eleven patients were deleted for YACs in the interval from IR4-3R to GABRB3. On the proximal side of the deletion interval, 10/10 breakpoints fell within a single ML34 YAC of 370 kb. On the distal side, 8/9 breakpoints fell within a single IR10-1 YAC of 200 kb. These results indicate a striking consistency in the location of the proximal and distal breakpoints in PWS and AS patients. FISH analysis on a previously reported case of familial AS confirmed a submicroscopic deletion including YACs corresponding to LS6-1, TD3-21 and GABRB3 and supports the separation of the PWS and AS critical regions. Since these three YACs do not overlap each other, the minimum size of the AS critical region is > or = 650 kb. FAU - Kuwano, A AU - Kuwano A AD - Institute for Molecular Genetics, Baylor College of Medicine, Houston, TX 77030. FAU - Mutirangura, A AU - Mutirangura A FAU - Dittrich, B AU - Dittrich B FAU - Buiting, K AU - Buiting K FAU - Horsthemke, B AU - Horsthemke B FAU - Saitoh, S AU - Saitoh S FAU - Niikawa, N AU - Niikawa N FAU - Ledbetter, S A AU - Ledbetter SA FAU - Greenberg, F AU - Greenberg F FAU - Chinault, A C AU - Chinault AC AU - et al. LA - eng GR - HD20619/HD/NICHD NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - England TA - Hum Mol Genet JT - Human molecular genetics JID - 9208958 RN - 0 (DNA Probes) RN - 0 (DNA, Satellite) RN - 0 (Genetic Markers) RN - 0 (Oligodeoxyribonucleotides) RN - 0 (Receptors, GABA-A) RN - 9007-49-2 (DNA) SB - IM EIN - Hum Mol Genet 1992 Dec;1(9):784 MH - Angelman Syndrome/*genetics MH - Base Sequence MH - Cells, Cultured MH - Chromosome Banding MH - Chromosome Mapping/methods MH - *Chromosomes, Fungal MH - *Chromosomes, Human, Pair 15 MH - Cloning, Molecular/methods MH - DNA/blood/genetics/isolation & purification MH - DNA Probes MH - DNA, Satellite/genetics MH - Gene Library MH - Genetic Markers MH - Humans MH - In Situ Hybridization MH - Karyotyping MH - Lymphocytes/physiology MH - Molecular Sequence Data MH - Oligodeoxyribonucleotides MH - Polymerase Chain Reaction/methods MH - Polymorphism, Restriction Fragment Length MH - Prader-Willi Syndrome/*genetics MH - Receptors, GABA-A/genetics MH - Repetitive Sequences, Nucleic Acid MH - Saccharomyces cerevisiae/genetics MH - Sequence Deletion EDAT- 1992/09/01 00:00 MHDA- 1992/09/01 00:01 CRDT- 1992/09/01 00:00 PHST- 1992/09/01 00:00 [pubmed] PHST- 1992/09/01 00:01 [medline] PHST- 1992/09/01 00:00 [entrez] AID - 10.1093/hmg/1.6.417 [doi] PST - ppublish SO - Hum Mol Genet. 1992 Sep;1(6):417-25. doi: 10.1093/hmg/1.6.417.