Preferred Label : Progesterone-Mediated Oocyte Maturation Pathway;
NCIt related terms : Progesterone-mediated oocyte maturation;
Alternative definition : KEGG: Xenopus oocytes are naturally arrested at G2 of meiosis I. Exposure to either
insulin/IGF-1 or the steroid hormone progesterone breaks this arrest and induces resumption
of the two meiotic division cycles and maturation of the oocyte into a mature, fertilizable
egg. This process is termed oocyte maturation. The transition is accompanied by an
increase in maturation promoting factor (MPF or Cdc2/cyclin B) which precedes germinal
vesicle breakdown (GVBD). Most reports point towards the Mos-MEK1-ERK2 pathway [where
ERK is an extracellular signal-related protein kinase, MEK is a MAPK/ERK kinase and
Mos is a p42(MAPK) activator] and the polo-like kinase/CDC25 pathway as responsible
for the activation of MPF in meiosis, most likely triggered by a decrease in cAMP.;
KEGG ID : hsa04914;
Origin ID : C91492;
UMLS CUI : C2984303;
Semantic type(s)
has_gene_product_element
pathway_has_gene_element