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Entry
map04114                    Pathway                                

Name
Oocyte meiosis
Description
During meiosis, a single round of DNA replication is followed by two rounds of chromosome segregation, called meiosis I and meiosis II. At meiosis I, homologous chromosomes recombine and then segregate to opposite poles, while the sister chromatids segregate from each other at meoisis II. In vertebrates, immature oocytes are arrested at the PI (prophase of meiosis I). The resumption of meiosis is stimulated by progesterone, which carries the oocyte through two consecutive M-phases (MI and MII) to a second arrest at MII. The key activity driving meiotic progression is the MPF (maturation-promoting factor), a heterodimer of CDC2 (cell division cycle 2 kinase) and cyclin B. In PI-arrested oocytes, MPF is initially inactive and is activated by the dual-specificity CDC25C phosphatase as the result of new synthesis of Mos induced by progesterone. MPF activation mediates the transition from the PI arrest to MI. The subsequent decrease in MPF levels, required to exit from MI into interkinesis, is induced by a negative feedback loop, where CDC2 brings about the activation of the APC (anaphase-promoting complex), which mediates destruction of cyclin B. Re-activation of MPF for MII requires re-accumulation of high levels of cyclin B as well as the inactivation of the APC by newly synthesized Emi2 and other components of the CSF (cytostatic factor), such as cyclin E or high levels of Mos. CSF antagonizes the ubiquitin ligase activity of the APC, preventing cyclin B destruction and meiotic exit until fertilization occurs. Fertilization triggers a transient increase in cytosolic free Ca2+, which leads to CSF inactivation and cyclin B destruction through the APC. Then eggs are released from MII into the first embryonic cell cycle.
Class
Cellular Processes; Cell growth and death
BRITE hierarchy
Pathway map
Oocyte meiosis
map04114

All organismsOrtholog table
Module
M00380  
SCF-BTRC complex [PATH:map04114]
M00389  
APC/C complex [PATH:map04114]
Disease
H00574  
Coffin-Lowry syndrome (CLS)
H00608  
46,XY disorders of sex development (Disorders in androgen synthesis or action)
H00631  
Cornelia de Lange syndrome (CdLS)
H01274  
Growth delay due to insulin-like growth factor I resistance
Other DBs
GO: 
Reference
  Authors
Haccard O, Jessus C
  Title
Oocyte maturation, Mos and cyclins--a matter of synthesis: two functionally redundant ways to induce meiotic maturation.
  Journal
Cell Cycle 5:1152-9 (2006)
Reference
  Authors
Crane R, Gadea B, Littlepage L, Wu H, Ruderman JV
  Title
Aurora A, meiosis and mitosis.
  Journal
Biol Cell 96:215-29 (2004)
Reference
  Authors
Perdiguero E, Nebreda AR
  Title
Regulation of Cdc25C activity during the meiotic G2/M transition.
  Journal
Cell Cycle 3:733-7 (2004)
Reference
  Authors
Perry JA, Kornbluth S
  Title
Cdc25 and Wee1: analogous opposites?
  Journal
Cell Div 2:12 (2007)
Reference
  Authors
Jessus C, Ozon R
  Title
How does Xenopus oocyte acquire its competence to undergo meiotic maturation?
  Journal
Biol Cell 96:187-92 (2004)
Reference
  Authors
Revenkova E, Jessberger R
  Title
Shaping meiotic prophase chromosomes: cohesins and synaptonemal complex proteins.
  Journal
Chromosoma 115:235-40 (2006)
Reference
  Authors
Belloc E, Pique M, Mendez R
  Title
Sequential waves of polyadenylation and deadenylation define a translation circuit that drives meiotic progression.
  Journal
Biochem Soc Trans 36:665-70 (2008)
Reference
  Authors
Pesin JA, Orr-Weaver TL
  Title
Regulation of APC/C activators in mitosis and meiosis.
  Journal
Annu Rev Cell Dev Biol 24:475-99 (2008)
Reference
  Authors
Tang W, Wu JQ, Guo Y, Hansen DV, Perry JA, Freel CD, Nutt L, Jackson PK, Kornbluth S
  Title
Cdc2 and Mos regulate Emi2 stability to promote the meiosis I-meiosis II transition.
  Journal
Mol Biol Cell 19:3536-43 (2008)
Reference
  Authors
Wu JQ, Kornbluth S
  Title
Across the meiotic divide - CSF activity in the post-Emi2/XErp1 era.
  Journal
J Cell Sci 121:3509-14 (2008)
Reference
  Authors
Schmidt A, Rauh NR, Nigg EA, Mayer TU
  Title
Cytostatic factor: an activity that puts the cell cycle on hold.
  Journal
J Cell Sci 119:1213-8 (2006)
Reference
  Authors
Vogt E, Kirsch-Volders M, Parry J, Eichenlaub-Ritter U
  Title
Spindle formation, chromosome segregation and the spindle checkpoint in mammalian oocytes and susceptibility to meiotic error.
  Journal
Mutat Res 651:14-29 (2008)
Reference
  Authors
Perry AC, Verlhac MH
  Title
Second meiotic arrest and exit in frogs and mice.
  Journal
EMBO Rep 9:246-51 (2008)
Reference
  Authors
Tunquist BJ, Eyers PA, Chen LG, Lewellyn AL, Maller JL
  Title
Spindle checkpoint proteins Mad1 and Mad2 are required for cytostatic factor-mediated metaphase arrest.
  Journal
J Cell Biol 163:1231-42 (2003)
Reference
  Authors
Hutchins JR, Dikovskaya D, Clarke PR.
  Title
Regulation of Cdc2/cyclin B activation in Xenopus egg extracts via inhibitory phosphorylation of Cdc25C phosphatase by Ca(2+)/calmodulin-dependent protein [corrected] kinase II.
  Journal
Mol Biol Cell 14:4003-14 (2003)
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