期刊
EUROPEAN JOURNAL OF HUMAN GENETICS
卷 18, 期 4, 页码 457-462出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ejhg.2009.196
关键词
genomic selection; enrichment; microdissection; next-generation sequencing
资金
- Deutsche Forschungsgemeinschaft (DFG) [SFB 577, A4, LI820/11-1, LI820/17-1, Li768/6-1, 6-2]
- IZKF Jena [S16]
- Stiftung Leukamie
- University Jena
- Charite Medical Faculty
The linkage of disease gene mapping with DNA sequencing is an essential strategy for defining the genetic basis of a disease. New massively parallel sequencing procedures will greatly facilitate this process, although enrichment for the target region before sequencing remains necessary. For this step, various DNA capture approaches have been described that rely on sequence-defined probe sets. To avoid making assumptions on the sequences present in the targeted region, we accessed specific cytogenetic regions in preparation for next-generation sequencing. We directly microdissected the target region in metaphase chromosomes, amplified it by degenerate oligonucleotide-primed PCR, and obtained sufficient material of high quality for high-throughput sequencing. Sequence reads could be obtained from as few as six chromosomal fragments. The power of cytogenetic enrichment followed by next-generation sequencing is that it does not depend on earlier knowledge of sequences in the region being studied. Accordingly, this method is uniquely suited for situations in which the sequence of a reference region of the genome is not available, including population-specific or tumor rearrangements, as well as previously unsequenced genomic regions such as centromeres. European Journal of Human Genetics (2010) 18, 457-462; doi:10.1038/ejhg.2009.196; published online 4 November 2009
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