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Germinal vesicle material drives meiotic cell cycle of mouse oocyte through the 3'UTR-dependent control of cyclin B1 synthesis.
- Source :
-
Developmental biology [Dev Biol] 2006 Apr 01; Vol. 292 (1), pp. 46-54. Date of Electronic Publication: 2006 Feb 20. - Publication Year :
- 2006
-
Abstract
- We compared the profile of histone H1 kinase activity, reflecting Maturation Promoting Factor (MPF) activity in oocytes bisected at the germinal vesicle (GV) stage and allowed to mature as separate oocyte halves in vitro. Whereas the oocyte halves containing the nucleus exhibited the same profile of increased kinase activity as that typical for intact oocytes, the anuclear halves revealed strong inhibition of the increase in this activity soon after germinal vesicle breakdown (GVBD). In contrast, the profile of MAP kinase activity did not differ significantly between anuclear and nucleus-containing oocyte halves throughout maturation. Of the two MPF components, CDK1 and cyclin B1, the amount of the latter was significantly reduced in anuclear halves, a reduction due to low-level synthesis and not to enhanced degradation. Expression of three reporter luciferase RNAs constructed, respectively, to contain cyclin B1-specific 3'UTR, the globin-specific 3'UTR, or no 3'UTR sequence was enhanced in nuclear halves, with significantly greater enhancement for the construct containing cyclin B1-specific 3'UTR as compared to the two other RNAs. We conclude that the profile of activity of MPF during mouse oocyte maturation is controlled by an unknown GV-associated factor(s) acting via 3'UTR-dependent control of cyclin B1 synthesis. These results require the revision of the hitherto prevailing view that the control of MPF activity during mouse oocyte maturation is independent of GV-derived material.
- Subjects :
- Animals
CDC2 Protein Kinase genetics
CDC2 Protein Kinase metabolism
Cell Nucleus enzymology
Cell Nucleus genetics
Cells, Cultured
Cyclin B1
Female
Gene Expression Regulation, Developmental
Maturation-Promoting Factor metabolism
Mesothelin
Mice
Mitogen-Activated Protein Kinases metabolism
Oocytes enzymology
Protein Kinases metabolism
Proto-Oncogene Proteins c-mos metabolism
RNA, Messenger biosynthesis
3' Untranslated Regions physiology
Cell Nucleus physiology
Cyclin B biosynthesis
Cyclin B genetics
Meiosis genetics
Oocytes physiology
Subjects
Details
- Language :
- English
- ISSN :
- 0012-1606
- Volume :
- 292
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Developmental biology
- Publication Type :
- Academic Journal
- Accession number :
- 16490186
- Full Text :
- https://doi.org/10.1016/j.ydbio.2005.12.052