PMID- 8005590 OWN - NLM STAT- MEDLINE DCOM- 19940719 LR - 20190722 IS - 0340-6717 (Print) IS - 0340-6717 (Linking) VI - 93 IP - 6 DP - 1994 Jun TI - Delineation of marker chromosomes by reverse chromosome painting using only a small number of DOP-PCR amplified microdissected chromosomes. PG - 663-7 AB - A new procedure for determining the chromosomal origin of marker chromosomes has been carried out. The origin of marker chromosomes that were unidentifiable by standard banding techniques could be verified by reverse chromosome painting. This technique includes microdissection, followed by in vitro DNA amplification and fluorescence in situ hybridization (FISH). A number of marker chromosomes prepared from unbanded and from GTG-banded lymphocyte chromosomes were collected with microneedles and transferred to a collection drop. The chromosomal material was amplified by a degenerate oligonucleotide-primed polymerase chain reaction (DOP-PCR). The resulting PCR products were labelled by nick-translation with biotin-11-dUTP and used as probes for FISH. They were hybridized onto normal metaphase spreads in order to determine the precise regional chromosomal origin of the markers. Following this approach, we tested 2-14 marker chromosomes in order to determine how many are necessary for reverse chromosome painting. As few as two marker chromosomes provided sufficient material to paint the appropriate chromosome of origin, regardless of whether the marker contained heterochromatic or mainly euchromatic material. With this method, it was possible to identify two marker chromosomes of a healthy proband [karyotype: 48,XY,+mar1,+mar2] and an aberrant Y chromosome of a mentally retarded boy [karyotype: 46,X, der(Y)]. FAU - Viersbach, R AU - Viersbach R AD - Institut fur Humangenetik, Universitat Bonn, Germany. FAU - Schwanitz, G AU - Schwanitz G FAU - Nothen, M M AU - Nothen MM LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Hum Genet JT - Human genetics JID - 7613873 RN - 0 (DNA Primers) RN - 0 (Genetic Markers) SB - IM MH - Adult MH - Base Sequence MH - Child, Preschool MH - Chromosome Banding MH - DNA Primers MH - *Genetic Markers MH - Humans MH - In Situ Hybridization, Fluorescence MH - Infant MH - Karyotyping MH - Male MH - Molecular Sequence Data MH - Polymerase Chain Reaction EDAT- 1994/06/01 00:00 MHDA- 1994/06/01 00:01 CRDT- 1994/06/01 00:00 PHST- 1994/06/01 00:00 [pubmed] PHST- 1994/06/01 00:01 [medline] PHST- 1994/06/01 00:00 [entrez] AID - 10.1007/BF00201567 [doi] PST - ppublish SO - Hum Genet. 1994 Jun;93(6):663-7. doi: 10.1007/BF00201567.