Unfertilized frog eggs die by apoptosis following meiotic exit
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چکیده
منابع مشابه
Unfertilized Xenopus Eggs Die by Bad-Dependent Apoptosis under the Control of Cdk1 and JNK
Ovulated eggs possess maternal apoptotic execution machinery that is inhibited for a limited time. The fertilized eggs switch off this time bomb whereas aged unfertilized eggs and parthenogenetically activated eggs fail to stop the timer and die. To investigate the nature of the molecular clock that triggers the egg decision of committing suicide, we introduce here Xenopus eggs as an in vivo sy...
متن کاملTHE PROTEIN-SYNTHETIC LESION IN UNFERTILIZED EGGS* BY LARY STAVYt
Control of protein synthesis immediately following fertilization in the sea urchin egg is at the level of translation.1' 2 This system may serve as a useful model for translation-level control in other cells. Fertilization evokes a pattern of increase in the rate of protein synthesis which is independent of the synthesis of new RNA. 3 This fact was interpreted as evidence for the presence in un...
متن کاملCytasters induced within unfertilized sea-urchin eggs.
Conditions that induce the formation of asters in unfertilized sea-urchin eggs have been investigated. Monasters were formed by treatment of eggs with acidic or basic sea-water, or procaine- or thymol-containing sea-water. A second treatment step, incubation with D2O-containing, ethanol-containing or hypertonic sea-water induced multiple cytasters. The number and size of cytasters varied accord...
متن کاملIsolation of VLs from Unfertilized Eggs
The vitelline layers (VLs) of unfertilized sea urchin eggs were isolated by homogenization in a hypotonic medium containing Triton X-100 and EDTA. The surface topography of the VL is not changed by isolation. The thickness of the isolated VLs (300-400/~) is greater than that reported for VLs on intact eggs (100-200 .~). Sperm adhere to the isolated VLs. When both internal and external VL surfac...
متن کاملTemperature and Frog Eggs
Belehrádek's temperature function in which metabolic rate V is related to temperature T by
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ژورنال
عنوان ژورنال: BMC Cell Biology
سال: 2011
ISSN: 1471-2121
DOI: 10.1186/1471-2121-12-56