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Oncogene. 1997 Aug 7;15(6):691-700.

Mouse Neogenin, a DCC-like molecule, has four splice variants and is expressed widely in the adult mouse and during embryogenesis.

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Ludwig Institute for Cancer Research, Royal Melbourne Hospital, Victoria, Australia.


Neogenin is a member of the N-CAM family of cell adhesion molecules and is closely related to the DCC tumor suppressor gene product. Recently, it has been demonstrated that the DCC/Neogenin subfamily plays a key role in axonal guidance within the embryonic nervous system, however little is known about the function of DCC or Neogenin in non-neuronal tissues in vertebrates. To gain an understanding of Neogenin function outside of the nervous system we have cloned and sequenced the mouse homologue of Neogenin. We describe three alternatively spliced exons within the extracellular domain of Neogenin and a fourth alternatively spliced exon within the cytoplasmic domain. We further demonstrate that three of these alternatively spliced exons are developmentally regulated. Analysis of Neogenin mRNA expression showed that two distinct Neogenin transcripts are expressed at significant levels in a broad spectrum of adult mouse tissues and throughout the mid to late stages of embryogenesis. In situ hybridization studies on day 15.5 mouse embryos revealed that Neogenin is expressed widely throughout the developing mouse embryo, in both neuronal and non-neuronal tissues. These observations suggests that Neogenin may play an integral role in regulating differentiation programmes and/or cell migration events within many embryonic and adult tissues.

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