Journal ArticleDOI
Site of action of 1-methyladenine in inducing oocyte maturation in starfish.
H. Kanatani,Y. Hiramoto +1 more
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Results indicate that this substance acts on the surface of the oocyte from the outside, and invariably brought about oocyte maturation in starfishes.About:
This article is published in Experimental Cell Research.The article was published on 1970-08-01. It has received 160 citations till now. The article focuses on the topics: Oocyte activation & Germinal vesicle.read more
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Biosynthesis, Metabolism and Mode of Action of Invertebrate Hormones
TL;DR: The present state of knowledge on the Chemical Nature of the Androgenic Hormone in Higher Crustaceans and Ecdysteroids is presented, including the methods and recent data on Validation.
Journal ArticleDOI
Cytoplasmic factor responsible for germinal vesicle breakdown and meiotic maturation in starfish oocyte.
Takeo Kishimoto,Haruo Kanatani +1 more
TL;DR: Microinjection experiments are reported that provide evidence of a cytoplasmic factor which induces germinal vesicle breakdown (GVBD), leading to the completion of oocyte maturation in the starfish Asterina pectinifera.
Book ChapterDOI
Maturation-Inducing Substance in Starfishes
TL;DR: The mechanism of gamete release and oocyte maturation in starfishes, based on the action of gonad-stimulating substance (GSS) and maturation-inducing substance (MIS), I-methyladenine, is summarized in the chapter.
Journal ArticleDOI
Generality of the action of various maturation-promoting factors
TL;DR: It is revealed that injection of cytoplasm of maturing starfish oocytes (starfish MPF) into immature sea cucumber oocytes brought about maturation of the recipients, and that the nature of MPF is very similar among vertebrates and invertebrates.
Journal ArticleDOI
From oocyte maturation to the in vitro cell cycle: the history of discoveries of Maturation-Promoting Factor (MPF) and Cytostatic Factor (CSF).
TL;DR: The author tries to answer the following questions: why he decided to study oocyte maturation, how he discovered progesterone as a maturation-inducing hormone, how the cytoplasmic regulators of the cell cycle, Maturation-Promoting Factor (MPF) and Cyto-Static Factor (CSF), and how the author invented the method of observing cell cycle processes in a cytopsized extract in vitro.
References
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Journal ArticleDOI
Isolation and indentification on meiosis inducing substance in starfish Asterias amurensis.
TL;DR: The neural substance has been renamed gonad stimulating substance (GSS), and the second substance, produced in the ovary, is meiosis inducing substance (MIS), which seems to be non-species specific among starfishes7.
Journal ArticleDOI
Relative roles of the pituitary, follicle cells, and progesterone in the induction of oocyte maturation in Rana pipiens
TL;DR: Results indicate that pituitary gonadotropin acts on the follicle cells to stimulate them to release a hormone that directlyact on the oocyte to induce maturation.
Journal ArticleDOI
Induction of spawning and oocyte maturation by L-methyl-adenine in starfishes.
TL;DR: l-Methyladenine brings about spawning as well as oocyte maturation in vitro in starfish, Marthasterias glacialis, Astropecten aurantiacus and Ceramaster placenta and appears to act only on the full-grown oocytes.
Journal ArticleDOI
Microinjection of the live spermatozoa into sea urchin eggs
TL;DR: Live spermatozoa of the sea urchins, Psammechinus microtuberculatus, Paracentrotus lividus and Clypeaster japonicus were microinjected into the eggs of the same species, and in some eggs, extra-asters appeared at the late sperm diaster stage; they increased their sizes later on, and consequently the eggs divided in forms characteristic of polyspermic eggs.
Journal ArticleDOI
Role of the oocyte nucleus in physiological maturation in Rana pipiens.
L.Dennis Smith,R. E. Ecker +1 more
TL;DR: It is suggested that maturation does not require concomitant DNA-dependent RNA synthesis, but that protein synthesis is obligatory for all stages of maturation.
Related Papers (5)
Isolation and indentification on meiosis inducing substance in starfish Asterias amurensis.
Cytoplasmic factor responsible for germinal vesicle breakdown and meiotic maturation in starfish oocyte.
Takeo Kishimoto,Haruo Kanatani +1 more
In vitro Production of Meiosis Inducing Substance by Nerve Extract in Ovary of Starfish
Haruo Kanatani,Hiroko Shirai +1 more