Abstract
The interaction of neighboring cells via Notch signalling leads to cell fate determination, differentiation and patterning of highly organized tissues. Mice with targeted disruption of genes from the Notch signal transduction pathway display defects in the developing somites, neurogenic structures, blood vessels, heart and other organs. Recent studies have added requirements for Notch signalling during kidney, pancreas and thymus morphogenesis. Here, we describe the expression of all four receptors (Notch1–4), the five transmembrane ligands (Dll1, 3, 4, Jag1 and Jag2), intracellular effectors (the Hey genes) and extracellular modulators (Lfng, Mfng, Rfng) in the developing mouse metanephros. Our results point to a Lfng-dependent role for Notch signalling in the development of nephron segments, especially the proximal tubules.
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