Abstract:
:Described here is a new, more efficient method for defining major histocompatibility complex-Y (MHC-Y) genotypes in chickens. The MHC-Y region is genetically independent from the classical MHC (MHC-B) region. MHC-Y is highly polymorphic and potentially important in the genetics of disease resistance. MHC-Y haplotypes contain variable numbers of specialized MHC class I-like genes, along with members of four additional gene families. Previously, MHC-Y haplotypes were defined by patterns of restriction fragments (RF) generated in labor-intensive procedures that were difficult to use to define MHC-Y genotypes for large numbers of samples. The method reported here is much simpler. MHC-Y genotypes are distinguished via patterns of PCR products generated from heritable short tandem repeat (STR) regions found immediately upstream of the MHC class I-like genes located throughout MHC-Y haplotypes. To validate the method, fully pedigreed families were analyzed for STR-defined haplotypes in light of haplotypes defined previously by RF patterns. STR-defined MHC-Y patterns segregate in fully pedigreed families as expected and correspond with haplotypes assigned by RF patterns. The patterns provided in STR chromatograms generated by capillary electrophoresis are distinct for different haplotypes and can be scored easily. Investigations into the influence of MHC-Y genetics on immune responses can now realistically be conducted with large sample sets.
journal_name
Immunogeneticsjournal_title
Immunogeneticsauthors
Zhang J,Goto RM,Miller MMdoi
10.1007/s00251-020-01166-6subject
Has Abstractpub_date
2020-07-01 00:00:00pages
325-332issue
5eissn
0093-7711issn
1432-1211pii
10.1007/s00251-020-01166-6journal_volume
72pub_type
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