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A simple and rapid micromethod for genomic DNA extraction from jugal epithelial cells
Author(s) -
Aron Y.,
Swierezewski E.,
Lockhart A.
Publication year - 1994
Publication title -
allergy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.363
H-Index - 173
eISSN - 1398-9995
pISSN - 0105-4538
DOI - 10.1111/j.1398-9995.1994.tb02105.x
Subject(s) - dna , genomic dna , extraction (chemistry) , dna extraction , biology , computational biology , chemistry , polymerase chain reaction , genetics , gene , chromatography
We describe a rapid and reliable micromethod for DNA isolation from buccal epithelial cells from the interior mouth mucosa. This convenient, noninvasive method could be applied to genetic typing in a small number of cells (about 2000 cells per cheek). We have shown that DNA released by this method is suitable for further amplification by polymerase chain reaction (PCR). Using this protocol, coupled with the PCR‐RFLP (restriction fragment length polymorphism) method, we analyzed the allelic sequence diversity of the human lymphocyte antigen (HLA) class II genes in an extended family of 33 persons containing 14 asthmatic or atopic members. Six of eight DQA1 alleles, and 11 DQB1, 20 DPB1, and 10 DR haplotypes could be identified in a single DNA sample. Our results suggest that the DR53 group haplotype is frequently associated with allergic asthma and atopy. The micromethod described here may be useful in genetic epidemiology, especially in family studies involving small children.