Taylor, M, Wood, HM orcid.org/0000-0003-3009-5904, Halloran, SP et al. (1 more author) (2017) Examining the potential use and long term stability of guaiac faecal occult blood test cards for microbial DNA 16srRNA sequencing. Journal of Clinical Pathology, 70 (7). pp. 600-606. ISSN 0021-9746
Abstract
Aims With a growing interest in the influence the gut microbiome has on the development of colorectal cancer (CRC), we investigated the feasibility and stability of isolating and typing microbial DNA from guaiac faecal occult blood test (gFOBt) cards. This has the future potential to screen the microbial populations present in confirmed colorectal neoplasia cases with aims to predict the presence and development of CRC. Methods Fresh stool samples from three healthy volunteers were applied to gFOBt cards. DNA was extracted from both the cards and fresh stool samples. A series of additional cards were prepared from one volunteer, and extracted at time points between 2 weeks and 3 years. The V4 region of the 16srRNA gene was amplified and sequenced on an Illumina MiSeq at 2x250bp read lengths. Data was analysed using QIIME software. Results Samples were grouped both by volunteer and by type (fresh or gFOBt), and compared a variety of ways: visual inspection of taxa, alpha and beta diversity, intra-class correlation. In all comparisons, samples grouped by volunteer, and not by sample type. The different time points showed no appreciable differences with increased storage time. Conclusions This study has demonstrated that there is good concordance between microbial DNA isolated from fresh stool sample, and from the matched gFOBt card. Samples stored for up to 3 years showed no detrimental effect on measureable microbial DNA. This study has important future implications for investigating microbial influence on CRC development and other pathologies.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016. Produced by BMJ Publishing Group Ltd. This is an author produced version of a paper published in Journal of Clinical Pathology. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | stool; bowel cancer screening; next generation sequencing; microbiome |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Medicine (Leeds) > Leeds Institute of Cancer and Pathology (LICAP) > Pathology & Tumour Biology (Leeds) |
Funding Information: | Funder Grant number Yorkshire Cancer Research L386 |
Depositing User: | Symplectic Publications |
Date Deposited: | 21 Nov 2016 13:52 |
Last Modified: | 22 Jan 2018 14:21 |
Published Version: | http://doi.org/10.1136/jclinpath-2016-204165 |
Status: | Published |
Publisher: | BMJ Publishing Group |
Identification Number: | 10.1136/jclinpath-2016-204165 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:107705 |