to characterize the onset of nucleolar and extranucleolar transcription and expression of the nucleolar protein, fibrillarin, during preimplantation development in macaque embryos developing in vitro. RESULTS Extranucleolar transcription is initiated at the 2-cell stage, and nucleolar transcription and expression of fibrillarin are initiated at the 6- to 8-cell stage in macaque embryos developing in vitro. These results have important implications for understanding normal and impaired gene expression in primate embryos. FUTURE DIRECTIONS We plan to extend these studies, as well as studies involving expression of stage-specific genes, to embryos derived from in vitro matured oocytes and to reconstructed embryos produced by nuclear transfer in order to study impairments in genome activation and nuclear reprogramming. KEY WORDS fibrillarin, macaque, embryo, mRNA, rRNA FUNDING NIH RR00167, NIA AG12179 and HD-22023

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Primate Research Center Grants (P51)
Project #
5P51RR000167-39
Application #
6116439
Study Section
Project Start
1999-05-01
Project End
2000-04-30
Budget Start
1998-10-01
Budget End
1999-09-30
Support Year
39
Fiscal Year
1999
Total Cost
Indirect Cost
Name
University of Wisconsin Madison
Department
Type
DUNS #
161202122
City
Madison
State
WI
Country
United States
Zip Code
53715
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