Characterization of three de novo derivative chromosomes 16 by [open quotes]Reverse Chromosome Painting[close quotes] and molecular analysis
Journal Article
·
· American Journal of Human Genetics; (United States)
OSTI ID:6247240
- John Radcliffe Hospital, Headington (United Kingdom)
The authors have analyzed three de novo chromosome 16 rearrangements-two with a 16p+ chromosome and one a 16q+-none of which could be fully characterized by conventional cytogenetics. In each case, flow karyotypes have been produced, and the aberrant chromosome has been isolated by flow sorting. The origin of the additional material has been ascertained by amplifying and labeling the DNA of the abnormal chromosome by degenerate-oligonucleotide-primer-PCR and hybridizing it in situ to normal metaphase spreads (reverse chromosome painting). Both 16p+ chromosomes contain more than 30 Mb of DNA from the short arm of chromosome 9 (9p21.2-pter), while the 16q+ contains approximately 9 Mb of DNA from 2q37. The breakpoints on chromosome 16 have been localized in each case; the two breakpoints on the short arm are at different points within the terminal band, 16p13.3. The breakpoint on the long arm of chromosome 16 is very close to (within 230 kb of) the 16q telomere. Determination of the regions of monosomy and trisomy allowed the observed phenotypes to be compared with other reported cases involving aneuploidy for these regions. 41 refs., 4 figs.
- OSTI ID:
- 6247240
- Journal Information:
- American Journal of Human Genetics; (United States), Journal Name: American Journal of Human Genetics; (United States) Vol. 52:5; ISSN AJHGAG; ISSN 0002-9297
- Country of Publication:
- United States
- Language:
- English
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