Molecular cloning and analysis of chromosome band 11q23 involved in leukaemia-associated translocations
โ Scribed by Soma Das; Lyndal Kearney; Mark Bower; Tracy Chaplin; John H. Riley; Rakesh Anand; Bryan D. Young
- Book ID
- 102845429
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- English
- Weight
- 821 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1045-2257
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โฆ Synopsis
Three overlapping yeast artificial chromosomes (YACs) spanning a 780 kb region of DNA around the CD3 locus on chromosome I I have been isolated and characterised. The individual cloned regions have been mapped by in situ hybridisation to chromosome band I lq23, and a restriction enzyme map of this region has been constructed. The positions of these clones in relation to a series of leukaemia-associated chromosomal translocations has also been determined. It was concluded that. although two clones lay entirely proximal to the breakpoints examined, the third clone ( I 3HH4) encompassed the breakpoints for the translocations t(4;I I), t(6;I I), and t(9;I I). The t(9;I I ) was observed in an acute myeloid leukaemia in a patient previously treated for an unrelated malignancy. It would thus appear that the breakpoints at chromosome band I lq23 occurring in therapy-related leukaemias are in the same region as those found in adult and childhood acute leukaemias and may result from a common underlying mechanism. Genes Chrorn Cancer 5244-25 I ( I 992). @ 1992 WiIey-Lits, Inc.
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