Extracting DNA from FFPE Tissue Biospecimens Using User-Friendly Automated Technology: Is There an Impact on Yield or Quality?
File(s)PDF of submitted document.pdf (1.3 MB)
Accepted version
Author(s)
Mathieson, William
Guljar, Nafia
Sanchez, Ignacio
Sroya, Manveer
Thomas, Gerry A
Type
Journal Article
Abstract
DNA extracted from formalin-fixed, paraffin-embedded (FFPE) tissue blocks is amenable to analytical techniques, including sequencing. DNA extraction protocols are typically long and complex, often involving an overnight proteinase K digest. Automated platforms that shorten and simplify the process are therefore an attractive proposition for users wanting a faster turn-around or to process large numbers of biospecimens. It is, however, unclear whether automated extraction systems return poorer DNA yields or quality than manual extractions performed by experienced technicians. We extracted DNA from 42 FFPE clinical tissue biospecimens using the QiaCube (Qiagen) and ExScale (ExScale Biospecimen Solutions) automated platforms, comparing DNA yields and integrities with those from manual extractions. The QIAamp DNA FFPE Spin Column Kit was used for manual and QiaCube DNA extractions and the ExScale extractions were performed using two of the manufacturer's magnetic bead kits: one extracting DNA only and the other simultaneously extracting DNA and RNA. In all automated extraction methods, DNA yields and integrities (assayed using DNA Integrity Numbers from a 4200 TapeStation and the qPCR-based Illumina FFPE QC Assay) were poorer than in the manual method, with the QiaCube system performing better than the ExScale system. However, ExScale was fastest, offered the highest reproducibility when extracting DNA only, and required the least intervention or technician experience. Thus, the extraction methods have different strengths and weaknesses, would appeal to different users with different requirements, and therefore, we cannot recommend one method over another.
Date Issued
2018-05-03
Date Acceptance
2018-05-01
Citation
BIOPRESERVATION AND BIOBANKING, 2018, 16 (3)
ISSN
1947-5535
Publisher
MARY ANN LIEBERT, INC
Journal / Book Title
BIOPRESERVATION AND BIOBANKING
Volume
16
Issue
3
Copyright Statement
© 2018 Mary Ann Liebert, Inc. Final publication is available at https://dx.doi.org/10.1089/bio.2018.0009
Sponsor
Imperial College Healthcare NHS Trust- BRC Funding
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000431465000001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
RDC01 79560
Subjects
Science & Technology
Life Sciences & Biomedicine
Physical Sciences
Cell Biology
Chemistry, Applied
Medical Laboratory Technology
Chemistry
QiaCube
QIAamp
ExScale
DNA extraction
FFPE
automation
PARAFFIN-EMBEDDED TISSUE
COMMERCIALLY AVAILABLE KITS
NUCLEIC-ACIDS
SAMPLES
RNA
QUANTITY
FIXATION
BRAF
PCR
Publication Status
Published
Date Publish Online
2018-05-03