title: Antibody inhibition of protein activity in starfish oocytes.
abstract: Antibodies are widely utilized in cell and molecule biology for immunoblots, immunostaining, immunoprecipitation, immunoaffinity purification, and immunoassay. Some antibodies can be used for in vivo inhibition experiments. These antibodies bind to their target molecules and neutralize their functions, providing functional information in the study of their biological role. Here, we describe our methods for obtaining inhibitory antibodies against desired proteins. We then describe in the starfish oocyte system how to inhibit a target protein, even in the nucleus, by injection of antibody into the cytoplasm, and how to evaluate antibody inhibition of cell cycle regulators in small numbers of oocytes.
authors.affiliation: Laboratory of Cell and Developmental Biology, Graduate School of Bioscience, Tokyo Institute of Technology, Yokohama, Japan.
authors.forename: Eiichi
authors.initials: E
authors.lastname: Okumura
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Hara
authors.forename: Takeo
authors.initials: T
authors.lastname: Kishimoto
mesh_terms: D000818:Animals; D000906:Antibodies / Q000302:isolation & purification / Q000494:pharmacology*; D018929:Cell Culture Techniques; D002469:Cell Separation; D002474:Cell-Free System; D002478:Cells, Cultured; D057075:Enzyme Assays; D008845:Microinjections; D009865:Oocytes / Q000187:drug effects* / Q000201:enzymology; D006656:Protamine Kinase / Q000037:antagonists & inhibitors / Q000276:immunology / Q000378:metabolism; D011817:Rabbits; D013215:Starfish / Q000166:cytology / Q000187:drug effects*
chemical_list: D000906:Antibodies; D006656:Protamine Kinase