A study of quantitative dynamics of F-actin during oocyte maturation in the starfish Asterias amurensis

A study of quantitative dynamics of F-actin during oocyte maturation in the starfish Asterias... We studied the actin cytoskeleton state in Asterias amurensis oocytes within 30 min after the 1-methyladenine-induced maturation until the germinal vesicle breakdown. The total amount of actin remained unchanged during oocyte maturation. In immature oocytes, the major part of actin is not a part of filaments, but in the presence of 1-methyladenine massive actin polymerization began already within 20 min. Electron immunocytochemistry methods demonstrated joint localization of actin and αi-protein in the cytoplasm. They were redistributed from the cortex to the cytoplasm in the presence of 1-methyladenine. A possible involvement of actin cytoskeleton in transmembrane transduction of the hormonal signal at the postreceptor stages is discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Developmental Biology Springer Journals

A study of quantitative dynamics of F-actin during oocyte maturation in the starfish Asterias amurensis

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Publisher
Springer Journals
Copyright
Copyright © 2006 by Pleiades Publishing, Inc.
Subject
Life Sciences; Developmental Biology; Animal Anatomy / Morphology / Histology
ISSN
1062-3604
eISSN
1608-3326
D.O.I.
10.1134/S1062360406040035
Publisher site
See Article on Publisher Site

Abstract

We studied the actin cytoskeleton state in Asterias amurensis oocytes within 30 min after the 1-methyladenine-induced maturation until the germinal vesicle breakdown. The total amount of actin remained unchanged during oocyte maturation. In immature oocytes, the major part of actin is not a part of filaments, but in the presence of 1-methyladenine massive actin polymerization began already within 20 min. Electron immunocytochemistry methods demonstrated joint localization of actin and αi-protein in the cytoplasm. They were redistributed from the cortex to the cytoplasm in the presence of 1-methyladenine. A possible involvement of actin cytoskeleton in transmembrane transduction of the hormonal signal at the postreceptor stages is discussed.

Journal

Russian Journal of Developmental BiologySpringer Journals

Published: Jul 17, 2006

References

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