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Regulation of meiotic maturation in the mammalian oocyte: Inteplay between exogenous cues and the microtubule cytoskeleton
Author(s) -
Albertini David F.
Publication year - 1992
Publication title -
bioessays
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.175
H-Index - 184
eISSN - 1521-1878
pISSN - 0265-9247
DOI - 10.1002/bies.950140205
Subject(s) - microbiology and biotechnology , meiosis , biology , oocyte , somatic cell , centrosome , maturation promoting factor , microtubule , metaphase , cell cycle , mitosis , genetics , cell , cyclin dependent kinase 1 , chromosome , embryo , gene
Mammalian oocytes exhibit a series of cell cycle transitions that coordinate the penultimate events of meiosis with the onset of embryogenesis at fertilization. The execution of these cell cycle transitions, at G 2 /M of meiosis‐I and metaphase/anaphase of meiosis I and II, involve both biosynthetic and post‐translational modifications that directly modulate centrosome and microtubule behavior. Specifically, somatic cells alter the signal transduction pathways in the oocyte and influence the expression of maturation promoting factor (MPF) and cytostatic factor (CSF) activity through a microtubule‐dependent mechanism. The regulation of the oocytes' cell cycle machinery by hormone‐mediated somatic cell signals, involving both positive and negative stimuli, ensures that meiotic cell cycle progression is synchronized with the earliest pivotal events of mammalian reproduction.