Optimizing buccal cell DNA yields in mothers and infants for human leukocyte antigen genotyping

Audrey F Saftlas; Marianella Waldschmidt; Nyla Logsden-Sackett; Elizabeth Triche; Elizabeth Field

doi:10.1093/aje/kwh171

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Optimizing buccal cell DNA yields in mothers and infants for human leukocyte antigen genotyping

Journal article

Open access

Peer reviewed

Optimizing buccal cell DNA yields in mothers and infants for human leukocyte antigen genotyping

Audrey F Saftlas, Marianella Waldschmidt, Nyla Logsden-Sackett, Elizabeth Triche and Elizabeth Field

American journal of epidemiology, Vol.160(1), pp.77-84

07/01/2004

DOI: 10.1093/aje/kwh171

PMID: 15229120

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Abstract

Buccal cells provide a convenient source of DNA for epidemiologic studies. Mouthwash rinses yield a higher quality and quantity of DNA than cytobrushes but are not practical for collection from infants. Although cytobrushes yield sufficient DNA for most genotyping analyses, human leukocyte antigen (HLA) analysis can require 1,000-fold more DNA. In Iowa City, Iowa, in 2002, the authors tested two cytobrush collection methods to optimize total DNA yield and purity for HLA genotyping in mothers and infants: 1) brushing the left and right inner cheeks (standard method) and 2) brushing the upper and lower "gutters", that is, the space between the gums and the inner lips/cheeks along the front and sides of the mouth (test method). Storage and mailing experiments were performed to define conditions for optimizing DNA yield and purity. Mothers' gutter samples yielded significantly higher total amounts of DNA (mean yield = 15.0 micro g/two brushes) than cheek samples (mean yield = 7.6 micro g/two brushes) (paired t test: p < 0.001), while DNA yields from cheek and gutter collections from infants were equivalent. Cytobrushes stored and/or mailed in paper envelopes yielded significantly more and higher-purity DNA than brushes in plastic bags or tubes. Cytobrush sampling of the mouth's gutter areas can enhance DNA yield in mothers but not in young infants. DNA yields can be further optimized by controlling mailing and storage conditions.

Cheek

Humans

Specimen Handling - methods

Genotype

Infant

Mouth Mucosa

HLA Antigens - genetics

Mothers

DNA - genetics

DNA - isolation & purification

Iowa

Pilot Projects

Female

Details

Title: Subtitle: Optimizing buccal cell DNA yields in mothers and infants for human leukocyte antigen genotyping
Creators: Audrey F Saftlas - Department of Epidemiology, University of Iowa College of Public Health, Iowa City, IA 52242, USA. audrey-saftlas@uiowa.edu
Marianella Waldschmidt
Nyla Logsden-Sackett
Elizabeth Triche
Elizabeth Field
Resource Type: Journal article
Publication Details: American journal of epidemiology, Vol.160(1), pp.77-84
DOI: 10.1093/aje/kwh171
PMID: 15229120
NLM abbreviation: Am J Epidemiol
ISSN: 0002-9262
eISSN: 1476-6256
Grant note: R01-HD-325790 / NICHD NIH HHS
Language: English
Date published: 07/01/2004
Academic Unit: Epidemiology; Immunology; Internal Medicine
Record Identifier: 9984094661202771

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