GDNF signalling through the Ret receptor tyrosine kinase
- PMID: 8657282
- DOI: 10.1038/381789a0
GDNF signalling through the Ret receptor tyrosine kinase
Abstract
Mutational analysis in humans and mice has demonstrated that the Ret, the product of the c-ret proto-oncogene, a member of the receptor tyrosine kinase (RTK) superfamily, is essential for development of the enteric nervous system and kidney. Despite the established role of Ret in mammalian embryogenesis, its cognate ligand(s) is currently unknown. Here we demonstrate, by using a Xenopus embryo bioassay, that glial-cell-line-derived neurotrophic factor (GDNF), a distant member of the transforming growth factor (TGF)-beta superfamily, signals through the Ret RTK. Furthermore, using explant cultures from wild-type and Ret-deficient mouse embryos, we show that normal c-ret function is necessary for GDNF signalling in the peripheral nervous system. Our data strongly suggest that Ret is a functional receptor for GDNF, and that GDNF, in addition to its potential role in the differentiation and survival of central nervous system neurons, has profound effects on kidney organogenesis and the development of the peripheral nervous system.
Comment in
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Neurotrophic factors. Crossing receptor boundaries.Nature. 1996 Jul 4;382(6586):29-30. doi: 10.1038/382029a0. Nature. 1996. PMID: 8657299 No abstract available.
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