Identifying Variations in the Prion Gene of BSE-Affected Cattle
Author Information
Author(s): Clawson Michael L, Heaton Michael P, Keele John W, Smith Timothy P L, Harhay Gregory P, Richt Juergen A, Laegreid William W
Primary Institution: United States Department of Agriculture (USDA), Agricultural Research Service (ARS), US Meat Animal Research Center (USMARC)
Hypothesis
The study aims to determine the association of bovine prion gene (PRNP) alleles with BSE susceptibility.
Conclusion
The methodologies described here characterize variation throughout PRNP, allowing for the detection of rare PRNP alleles in BSE-affected cattle.
Supporting Evidence
- The study can detect 389 known and potentially unknown PRNP polymorphisms in BSE-affected cattle.
- DNA sufficient for PRNP genotyping can be obtained from a small portion of the obex tissue.
- Both the U.S. BSE case and her sire were found to be homozygous for deletion alleles associated with classical BSE susceptibility.
Takeaway
The researchers found a way to look for tiny changes in a gene that might make cattle sick with a disease called BSE, helping to find rare gene types in affected cows.
Methodology
The study improved a Sanger-based sequencing strategy to detect PRNP variation across all exons, introns, and part of the promoter.
Participant Demographics
The study involved ten cattle obex tissues from various breeds.
Statistical Information
Confidence Interval
95% CI = ± 2.3
Digital Object Identifier (DOI)
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