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      Expression of sprouty2 during early development of the chick embryo is coincident with known sites of FGF signalling

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      Mechanisms of Development

      Elsevier BV

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          Abstract

          The Drosophila sprouty protein is a recently-identified intracellular modulator of FGF and EGF receptor tyrosine kinase activity which antagonises ras/MAP kinase signalling. In a differential display analysis to identify genes involved in patterning the mid/hindbrain region of the chick neural tube, we have identified a sprouty orthologue, sprouty2. Here we report expression of sprouty2 transcripts in the developing chick embryo. We find a close correlation with known sites of FGF activity but little correlation with expression patterns of members of the EGF family. Initially, transcripts are associated with the primitive streak. During the period of neural tube patterning expression is detected in the anterior neuropore, in the isthmic region and in neural plate and posterior spinal cord. Transcripts are also detected in the otic placode, tail bud, mesoderm of the branchial arches, somitic myotome, retina, limb buds and gut mesenchyme; all known sites of FGF action.

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          Author and article information

          Journal
          Mechanisms of Development
          Mechanisms of Development
          Elsevier BV
          09254773
          March 2000
          March 2000
          : 91
          : 1-2
          : 361-364
          Article
          10.1016/S0925-4773(99)00288-9
          10704865
          58528bdf-2b80-4dc1-bab6-2c3d656d30e9
          © 2000

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