Linked Life Data

9800329

Source:http://linkedlifedata.com/resource/pubmed/id/9800329

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1998-12-7
pubmed:abstractText
The products of the BoLA-DRB3 locus are important molecules in the bovine immune response. Several techniques have been used to study and define this locus but they are generally time consuming and limited in their ability to detect novel alleles. In this study we used denaturing gradient gel electrophoresis (DGGE), and direct sequencing, for BoLA-DRB3-typing. First, modified locus-specific primers were used in polymerase chain reaction (PCR) to amplify a 240 bp fragment of exon 2 of BoLA-DRB3 from the genomic DNA of 22 cattle and one pair of twin calves. The reverse primer included a GC-rich clamp to improve the physical separation of the BoLA-DRB3 alleles by DGGE. The denaturing gradient needed to produce separation of alleles was determined using perpendicular DGGE, and this gradient was then applied to parallel denaturing gels. The optimal time for producing allele separation was determined using a time-series analysis. The bands representing individual BoLA-DRB3 alleles were excised from the gels, reamplified, and the nucleotide sequence determined using fluorescent-based automated cycle sequencing. The nucleotide sequences of the separated bands were then compared to published BoLA-DRB3 alleles. A gradient of 10-15% acrylamide combined with a 15-50% ureaformamide gradient was successfully used to separate BoLA-DRB3 alleles in all individuals examined. Nucleotide sequencing showed that the 24 animals possessed 13 BoLA-DRB3 alleles, all of which have been previously described. The BoLA-DRB3 genotypes included 20 heterozygotes and two homozygotes. Three BoLA-DRB3 alleles were seen in each of the twin calves, possibly due to leukochimerism. The technique is reliable and rapid, and avoids cloning alleles prior to nucleotide sequencing and therefore offers distinct advantages over previous techniques for BoLA-DRB3-typing.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0268-9146
pubmed:author
pubmed:issnType
Print
pubmed:volume
29
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
389-94
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Denaturing gradient gel electrophoresis: a rapid method for differentiating BoLA-DRB3 alleles.
pubmed:affiliation
Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison 53706, USA.
pubmed:publicationType
Journal Article