The Spemann organizer in amphibian embryos is a tissue with potent head-inducing activity, the molecular nature of which is unresolved. Here we describe dickkopf-1 (dkk-1), which encodes Dkk-1, a secreted inducer of Spemann's organizer in Xenopus and a member of a new protein family. Injections of mRNA and antibody indicate that dkk-1 is sufficient and necessary to cause head induction. dkk-1 is a potent antagonist of Wnt signalling, suggesting that dkk genes encode a family of secreted Wnt inhibitors.
机构:INRA, UMR 6073, CNRS, Equipe Gamete Male & Fertilite,PRC, F-37380 Nouzilly, France
Castella, S
Fouchécourt, S
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机构:INRA, UMR 6073, CNRS, Equipe Gamete Male & Fertilite,PRC, F-37380 Nouzilly, France
Fouchécourt, S
Teixeira-Gomes, AP
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机构:INRA, UMR 6073, CNRS, Equipe Gamete Male & Fertilite,PRC, F-37380 Nouzilly, France
Teixeira-Gomes, AP
Vinh, J
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机构:INRA, UMR 6073, CNRS, Equipe Gamete Male & Fertilite,PRC, F-37380 Nouzilly, France
Vinh, J
Belghazi, M
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机构:INRA, UMR 6073, CNRS, Equipe Gamete Male & Fertilite,PRC, F-37380 Nouzilly, France
Belghazi, M
Dacheux, F
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INRA, UMR 6073, CNRS, Equipe Gamete Male & Fertilite,PRC, F-37380 Nouzilly, FranceINRA, UMR 6073, CNRS, Equipe Gamete Male & Fertilite,PRC, F-37380 Nouzilly, France
Dacheux, F
Dacheux, JL
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机构:INRA, UMR 6073, CNRS, Equipe Gamete Male & Fertilite,PRC, F-37380 Nouzilly, France
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Queensland Inst Med Res, Joint Expt Oncol Program, Queensland Canc Fund Res Unit, Herston, Qld 4029, AustraliaQueensland Inst Med Res, Joint Expt Oncol Program, Queensland Canc Fund Res Unit, Herston, Qld 4029, Australia
Silins, G
Grimmond, S
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Queensland Inst Med Res, Joint Expt Oncol Program, Queensland Canc Fund Res Unit, Herston, Qld 4029, AustraliaQueensland Inst Med Res, Joint Expt Oncol Program, Queensland Canc Fund Res Unit, Herston, Qld 4029, Australia
Grimmond, S
Hayward, N
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Queensland Inst Med Res, Joint Expt Oncol Program, Queensland Canc Fund Res Unit, Herston, Qld 4029, AustraliaQueensland Inst Med Res, Joint Expt Oncol Program, Queensland Canc Fund Res Unit, Herston, Qld 4029, Australia