Document Detail

Genomic imprinting: male mice with uniparentally derived sex chromosomes.
MedLine Citation:
PMID:  2064776     Owner:  NLM     Status:  MEDLINE    
Although it has been known that there is an X-chromosome imprinting effect during early embryogenesis in female mammals, it remains unknown if parental origin of the X chromosome has an effect in males. Furthermore, it has not been possible to produce animals with normal sex chromosomes of uniparental origin to further evaluate such imprinting effects. We have devised a breeding scheme to produce male mice, designated XPYP males, in which both the X and Y chromosomes are paternally inherited. To our knowledge, these are the first mammals produced that have a normal sex chromosome constitution but with both sex chromosomes derived from one parent. Development and reproduction in these XPYP males and the sex ratio and chromosome constitution of their offspring appeared normal; thus there is no apparent effect in males of having both sex chromosomes derive from one parent or of having the X chromosome derived from an inappropriate parent. Although we have detected no X-chromosome imprinting effect in these males, evidence from other sources suggest that the X chromosome is parentally imprinted. Thus detection and definition of an imprint can depend on the assay used.
M A Handel; P A Hunt
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Molecular reproduction and development     Volume:  28     ISSN:  1040-452X     ISO Abbreviation:  Mol. Reprod. Dev.     Publication Date:  1991 Apr 
Date Detail:
Created Date:  1991-08-14     Completed Date:  1991-08-14     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8903333     Medline TA:  Mol Reprod Dev     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  337-40     Citation Subset:  IM    
Department of Zoology and Graduate Program in Cellular, Molecular, and Developmental Biology, University of Tennessee, Knoxville 37996-0810.
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MeSH Terms
Crosses, Genetic
Mice, Inbred C57BL
Sex Chromosomes*
Testis / ultrastructure
Grant Support

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