Cell 1975 Mar 01;43:269-74.

Effects of cycloheximide on the "autocatalytic" nature of the maturation promoting factor (MPF) in oocytes of Xenopus laevis.

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It is shown that a factor arising during the course of maturation in amphibian oocytes is by itself capable of inducing maturation when injected into recipient oocytes even after a series of 10 transfers. The mechanism of action of this phenomenon is shown to be under translational control. Experiments using cycloheximide suggest that MPF does not need protein synthesis for germinal vesicle breakdown (GVBD), but does require a translational step when serially transferred in order to sustain its renewal ("autocatalytic") capacity. It is further shown that oocytes of Xenopus laevis lend themselves to an in vitro system, since when matured under the action of some steroids (progesterone or hydrocortisone), they are capable of supporting functional maturation with cleavage and development after having received a transplanted blastula nucleus.

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Species referenced: Xenopus laevis
Genes referenced: cdk1


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