PMID- 21408193 OWN - NLM STAT- MEDLINE DCOM- 20110705 LR - 20211020 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 6 IP - 3 DP - 2011 Mar 7 TI - A large expansion of the HSFY gene family in cattle shows dispersion across Yq and testis-specific expression. PG - e17790 LID - 10.1371/journal.pone.0017790 [doi] LID - e17790 AB - Heat shock transcription factor, Y-linked (HSFY) is a member of the heat shock transcriptional factor (HSF) family that is found in multiple copies on the Y chromosome and conserved in a number of species. Its function still remains unknown but in humans it is thought to play a role in spermatogenesis. Through real time polymerase chain reaction (PCR) analyses we determined that the HSFY family is largely expanded in cattle ( approximately 70 copies) compared with human (2 functional copies, 4 HSFY-similar copies). Unexpectedly, we found that it does not vary among individual bulls as a copy number variant (CNV). Using fluorescence in situ hybridization (FISH) we found that the copies are dispersed along the long arm of the Y chromosome (Yq). HSFY expression in cattle appears restricted to the testis and its mRNA correlates positively with mRNA markers of spermatogonial and spermatocyte cells (UCHL1 and TRPC2, respectively) which suggests that HSFY is expressed (at least in part) in early germ cells. FAU - Hamilton, Christine K AU - Hamilton CK AD - Department of Biomedical Sciences, University of Guelph, Guelph, Ontario, Canada. FAU - Revay, Tamas AU - Revay T FAU - Domander, Robin AU - Domander R FAU - Favetta, Laura A AU - Favetta LA FAU - King, W Allan AU - King WA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110307 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (DNA-Binding Proteins) RN - 0 (Heat Shock Transcription Factors) RN - 0 (Transcription Factors) SB - IM MH - Amino Acid Sequence MH - Animals MH - Calibration MH - Cattle/*genetics MH - DNA-Binding Proteins/chemistry/*genetics/metabolism MH - Electrophoresis, Agar Gel MH - Female MH - Gene Dosage/genetics MH - Gene Expression Profiling MH - *Gene Expression Regulation MH - Heat Shock Transcription Factors MH - Humans MH - In Situ Hybridization, Fluorescence MH - Male MH - Molecular Sequence Data MH - Multigene Family/*genetics MH - Organ Specificity/genetics MH - Polymerase Chain Reaction MH - Sequence Alignment MH - Sequence Analysis, DNA MH - Sequence Homology, Amino Acid MH - Testis/*metabolism MH - Transcription Factors/chemistry/*genetics/metabolism MH - Y Chromosome/*genetics PMC - PMC3049798 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2011/03/17 06:00 MHDA- 2011/07/06 06:00 PMCR- 2011/03/07 CRDT- 2011/03/17 06:00 PHST- 2010/10/30 00:00 [received] PHST- 2011/02/10 00:00 [accepted] PHST- 2011/03/17 06:00 [entrez] PHST- 2011/03/17 06:00 [pubmed] PHST- 2011/07/06 06:00 [medline] PHST- 2011/03/07 00:00 [pmc-release] AID - PONE-D-10-05333 [pii] AID - 10.1371/journal.pone.0017790 [doi] PST - epublish SO - PLoS One. 2011 Mar 7;6(3):e17790. doi: 10.1371/journal.pone.0017790.