Preimplantation genetic diagnosis for single gene disorders is usually performed using polymerase chain reaction (PCR)-based methodologies modified for use in single cells. At present, single cell PCR tests require costly and time-consuming development and validation of highly sensitive amplification strategies to cover a growing number of mutations responsible for genetic disease. Whole-genome amplification (WGA) provides an opportunity to amplify the genome from a single blastomere to a level at which multiple tests can be performed on the same cell. Early WGA methods (primer extension preamplification and degenerate oligonucleotide-primed PCR) have not proved sufficiently accurate and reliable for routine clinical use. However, WGA using multiple displacement amplification (MDA) offers approx 5 million-fold amplification with fidelity, apparently sidestepping the limitation of a single cell, and is sufficient for use in most off-the-shelf molecular tests. This chapter describes an optimized MDA protocol for the preparation of genomic DNA from single fibroblasts.
CITATION STYLE
Schowalter, K. V., Fredrickson, J., & Thornhill, A. R. (2007). Efficient isothermal amplification of the entire genome from single cells. Methods in Molecular Medicine, 132, 87–99. https://doi.org/10.1007/978-1-59745-298-4_8
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