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BioMed Central, BMC Biotechnology, 1(13), 2013

DOI: 10.1186/1472-6750-13-23

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The use of DNA from archival dried blood spots with the Infinium HumanMethylation450 array

Journal article published in 2013 by JiHoon E. Joo, Ee Ming Wong, Laura Baglietto, Chol-Hee Jung, Helen Tsimiklis, Daniel J. Park, Nicholas C. Wong ORCID, Dallas R. English ORCID, John L. Hopper, Gianluca Severi, Graham G. Giles ORCID, Others, Melissa C. Southey
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Background: Dried blood (Guthrie card) spots provide an efficient way to collect and store blood specimens. DNA from this source has been utilised for a number of molecular analyses including genome-wide association studies, but only few studies have tested the feasibility of using it for epigenetic applications, particularly at a genome-wide level.Results: In this study, we demonstrate the successful use of DNA isolated from archived dried blood spots for the Infinium HumanMethylation450 Beadchip, along with DNA from matched frozen buffy coats. We obtained high quality and reproducible genome-wide DNA methylation profiles using both sample types. We also report high correlations (r > 0.9907) between DNA obtained from matched dried blood spots and frozen buffy coats, sufficient to distinguish between unrelated individuals.Conclusions: We, thus, demonstrate that DNA from archived dried blood spots is suitable for genome-wide DNA methylation profiling. © 2013 Joo et al.; licensee BioMed Central Ltd.