William J. Murphy -Texas A&M University
Disease(s): Reproduction
Sponsor(s):
Affenpinscher Club of America, American Cavalier King Charles Spaniel Club Charitable Trust, Anonymous, Bernese Mountain Dog Club of America, Bulldog Club of America Charitable Health Fund, Inc., Collie Health Foundation, Field Spaniel Society of America, French Bulldog Club of America, Golden Retriever Foundation, Greyhound Club of America, Health & Rescue Foundation of the Petit Basset Griffon Vendeen Club of America, Italian Greyhound Club of America, Miniature Pinscher Club of America, Inc., National Amateur Retriever Club, Pug Dog Club of America, Inc., Seminole Kennel Club, United States Kerry Blue Terrier Club, Inc., Westie Foundation of America, Inc., Yorkshire Terrier Club of America Foundation, Inc.
Breed(s): All (non-specified)
Abstract:
Studies of the human and mouse Y chromosomes have shown that they contain many testis specific genes that when defective cause infertility and spermatogenesis defects. The causes of male infertility in dogs are not well known. Though much is now known about genes on the dog autosomes and X chromosome, owing to the canine genome sequence, virtually nothing is known about the canine Y chromosome and the genes it harbors. This study will exhaustively characterize the gene content of the dog Y chromosome by sequencing from a cDNA selection library that is enriched for Y chromosome gene transcripts. This procedure will isolate the majority of canine Y chromosome genes and the DNA fragments they reside on, which will be mapped in the dog genome. The copy number and expression profile of these genes will be determined in a broad range of tissues to discern which genes have testis-specific expression patterns, and may therefore be good candidates for abnormal spermatogenesis. The identification of testes-specific Y chromosome genes will provide gene targets for future development of molecular diagnostic assays that examine the influence of these genes on canine male infertility.
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