Distinct roles for the mammalian A-type cyclins during oogenesis

Jenny Liao Persson, Qi Zhang, Xiang Yuan Wang, Stuart E. Ravnik, Samantha Muhlrad, Debra J. Wolgemuth

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

There are two A-type cyclins in higher vertebrates, cyclin A1 and A2. Targeted mutagenesis has shown that cyclin A2 is essential for early embryonic development while cyclin A1 is required only for male meiosis. The embryonic lethality of cyclin A2 knockout mice has obviated understanding its role in other aspects of mammalian development, including the germ line. We reported previously that cyclin A2 expression in the male germ line is consistent with a role in both mitotic and meiotic cell cycles. Using in situ hybridization and immunohistochemistry, we now observe high levels of cyclin A2 in granulosa cells and less-abundant but readily detectable expression in ovarian and ovulated oocytes. A decrease in cyclin A2 protein was observed in oocytes from embryonic stages to post-natal and adult ovaries. Interestingly, cyclin A2 protein was nuclear in oocytes from embryonic day 13.5 to 15.5, changing to largely cytoplasmic in oocytes from embryonic day 16.5 to post-natal and adults. Readily detectable expression of the cyclin-dependent kinases Cdk1 and Cdk2, two common partners for the A-type cyclins, was observed in granulosa cells and oocytes at all stages of folliculogenesis. Cdk1 was predominantly cytoplasmic, whereas Cdk2 was both cytoplasmic and nuclear in oocytes. No cyclin A1 expression, at either the mRNA level or the protein level was detected in either embryonic or adult ovaries, consistent with the full fertility observed in female cyclin A1-deficient mice. These results suggest that in the female germ line, cyclin A2 but not cyclin A1 has distinct roles in both mitosis and meiosis.

Original languageEnglish (US)
Pages (from-to)411-422
Number of pages12
JournalReproduction
Volume130
Issue number4
DOIs
StatePublished - Oct 2005

Fingerprint

Cyclin A2
Cyclin A
Oogenesis
Cyclin A1
Oocytes
Germ Cells
Granulosa Cells
Meiosis
Ovary
Cyclin-Dependent Kinases
Nuclear Proteins
Mitosis
Knockout Mice
Mutagenesis
Embryonic Development
In Situ Hybridization
Fertility
Vertebrates
Cell Cycle
Proteins

ASJC Scopus subject areas

  • Obstetrics and Gynecology
  • Cell Biology
  • Endocrinology
  • Embryology

Cite this

Persson, J. L., Zhang, Q., Wang, X. Y., Ravnik, S. E., Muhlrad, S., & Wolgemuth, D. J. (2005). Distinct roles for the mammalian A-type cyclins during oogenesis. Reproduction, 130(4), 411-422. https://doi.org/10.1530/rep.1.00719

Distinct roles for the mammalian A-type cyclins during oogenesis. / Persson, Jenny Liao; Zhang, Qi; Wang, Xiang Yuan; Ravnik, Stuart E.; Muhlrad, Samantha; Wolgemuth, Debra J.

In: Reproduction, Vol. 130, No. 4, 10.2005, p. 411-422.

Research output: Contribution to journalArticle

Persson, JL, Zhang, Q, Wang, XY, Ravnik, SE, Muhlrad, S & Wolgemuth, DJ 2005, 'Distinct roles for the mammalian A-type cyclins during oogenesis', Reproduction, vol. 130, no. 4, pp. 411-422. https://doi.org/10.1530/rep.1.00719
Persson JL, Zhang Q, Wang XY, Ravnik SE, Muhlrad S, Wolgemuth DJ. Distinct roles for the mammalian A-type cyclins during oogenesis. Reproduction. 2005 Oct;130(4):411-422. https://doi.org/10.1530/rep.1.00719
Persson, Jenny Liao ; Zhang, Qi ; Wang, Xiang Yuan ; Ravnik, Stuart E. ; Muhlrad, Samantha ; Wolgemuth, Debra J. / Distinct roles for the mammalian A-type cyclins during oogenesis. In: Reproduction. 2005 ; Vol. 130, No. 4. pp. 411-422.
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