Abstract
Microinjection of monoclonal antibodies (lines 238, 172, and 259) directed against the ras gene product, p21, into Xenopus laevis oocytes accelerated progesterone-induced germinal vesicle breakdown. Antibody 238 had the greatest effect on the acceleration of progesterone-induced oocyte maturation, and this effect was correlated with in vitro inhibition of adenylate cyclase (EC 4.6.1.1) activity in a concentration-dependent manner. Inhibition of adenylate cyclase by antibody 238 was also measured in membranes prepared from oocytes pretreated with either cholera toxin or pertussis toxin. These results suggest a role for the ras gene product in the regulation of vertebrate cell adenylate cyclase activity.
MeSH Terms
Adenylyl Cyclase Inhibitors
Adenylyl Cyclases/genetics
Animals
Antibodies, Monoclonal
Antigen-Antibody Complex
Cell Division/drug effects
Female
Genes
Microinjections
Oocytes/cytology,drug effects,enzymology
Progesterone/pharmacology
Proto-Oncogene Proteins/genetics,immunology
Proto-Oncogene Proteins p21(ras)
Proto-Oncogenes
Xenopus
Chemicals
Adenylyl Cyclase Inhibitors
Antibodies, Monoclonal
Antigen-Antibody Complex
Proto-Oncogene Proteins
Progesterone
Proto-Oncogene Proteins p21(ras)
Adenylyl Cyclases
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Sadler S E
Schechter A L
Tabin C J
Maller J L
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26 references, click to expand
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