title: Array painting using microdissected chromosomes to map chromosomal breakpoints.
abstract: Molecular characterization of breakpoints of chromosomal rearrangements is a successful strategy for the identification of candidate disease genes. Mapping translocation breakpoints and rearranged chromosomal boundaries is labor intensive and/or time consuming. Here, we present a novel and rapid procedure to map such chromosomal breakpoints by hybridizing amplified microdissection derived DNA of aberrant chromosomes to arrays containing genomic clones. We illustrate the potential of the technique by molecularly delineating the breakpoints in five small supernumerary marker chromosomes (sSMC) and mapping the breakpoints of five different chromosomal translocations.
authors.affiliation: Center for Human Genetics, University Hospital Leuven, Leuven, Belgium.
authors.forename: L
authors.initials: L
authors.lastname: Backx
authors.forename: H
authors.initials: H
authors.lastname: Van Esch
authors.forename: C
authors.initials: C
authors.lastname: Melotte
authors.forename: N
authors.initials: N
authors.lastname: Kosyakova
authors.forename: H
authors.initials: H
authors.lastname: Starke
authors.forename: J-P
authors.initials: JP
authors.lastname: Frijns
authors.forename: T
authors.initials: T
authors.lastname: Liehr
authors.forename: J R
authors.initials: JR
authors.lastname: Vermeesch
mesh_terms: D019457:Chromosome Breakage; D020223:Chromosome Painting / Q000379:methods*; D002877:Chromosomes, Human / Q000235:genetics*; D015321:Gene Rearrangement / Q000235:genetics; D005819:Genetic Markers / Q000235:genetics; D006801:Humans; D008677:Metaphase; D042282:Microdissection; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods*; D020161:Physical Chromosome Mapping / Q000379:methods*; D014178:Translocation, Genetic / Q000235:genetics
chemical_list: D005819:Genetic Markers