Kidney epithelia have separate origins; collecting ducts develop by ureteric bud growth and arborisation, nephrons by induced mesenchyme-epithelium transition. Both express sulphated glycosaminoglycans (GAGs) which are strikingly upregulated during nephron differentiation. However, sodium chlorate, an inhibitor of GAG sulphation, and the GAG-degrading enzymes heparitinase plus chondroitinase, did not prevent nephron development. In contrast, ureteric bud growth and branching were reversibly inhibited by the above reagents, the inhibition correlating quantitatively with sulphated GAG deprivation caused by a range of chlorate concentrations. Growth and branching could be independently restored during GAG deprivation by hepatocyte growth factor and phorbol-12-myristate acetate (PMA) respectively. Together these signalling effectors stimulated both branch initiation and growth. Thus growth and morphogenesis of ureteric bud involve distinct signalling pathways both regulated by GAGs.
JOURNAL ARTICLE|
01 May 1995
Sulphated proteoglycan is required for collecting duct growth and branching but not nephron formation during kidney development
J. Davies,
J. Davies
Cancer Research Campaign Epithelial Morphogenesis Research Group, School of Biological Sciences, University of Manchester, UK.
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M. Lyon,
M. Lyon
Cancer Research Campaign Epithelial Morphogenesis Research Group, School of Biological Sciences, University of Manchester, UK.
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J. Gallagher,
J. Gallagher
Cancer Research Campaign Epithelial Morphogenesis Research Group, School of Biological Sciences, University of Manchester, UK.
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D. Garrod
D. Garrod
Cancer Research Campaign Epithelial Morphogenesis Research Group, School of Biological Sciences, University of Manchester, UK.
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J. Davies
Cancer Research Campaign Epithelial Morphogenesis Research Group, School of Biological Sciences, University of Manchester, UK.
M. Lyon
Cancer Research Campaign Epithelial Morphogenesis Research Group, School of Biological Sciences, University of Manchester, UK.
J. Gallagher
Cancer Research Campaign Epithelial Morphogenesis Research Group, School of Biological Sciences, University of Manchester, UK.
D. Garrod
Cancer Research Campaign Epithelial Morphogenesis Research Group, School of Biological Sciences, University of Manchester, UK.
Online Issn: 1477-9129
Print Issn: 0950-1991
© 1995 by Company of Biologists
1995
Development (1995) 121 (5): 1507–1517.
Citation
J. Davies, M. Lyon, J. Gallagher, D. Garrod; Sulphated proteoglycan is required for collecting duct growth and branching but not nephron formation during kidney development. Development 1 May 1995; 121 (5): 1507–1517. doi: https://doi.org/10.1242/dev.121.5.1507
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