RGD Reference Report - Platelet-derived growth factor receptor beta regulates migration and DNA synthesis in metanephric mesenchymal cells. - Rat Genome Database

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Platelet-derived growth factor receptor beta regulates migration and DNA synthesis in metanephric mesenchymal cells.

Authors: Arar, M  Xu, YC  Elshihabi, I  Barnes, JL  Choudhury, GG  Abboud, HE 
Citation: Arar M, etal., J Biol Chem. 2000 Mar 31;275(13):9527-33.
RGD ID: 8554631
Pubmed: PMID:10734101   (View Abstract at PubMed)

Platelet-derived growth factor (PDGF) B-chain and PDGF receptor beta (PDGFR beta) are essential for glomerulogenesis. Mice deficient in PDGF B-chain or PDGFR beta exhibit an abnormal glomerular phenotype characterized by total lack of mesangial cells. In this study, we localized PDGFR beta in the developing rat kidney and explored the biological effects of PDGF in metanephric mesenchymal cells in an attempt to determine the mechanism by which PDGF regulates mesangial cell development. Immunohistochemical and in situ hybridization studies of rat embryonic kidneys reveal that PDGFR beta localizes to undifferentiated metanephric mesenchyme and is later expressed in the cleft of the comma-shaped and S-shaped bodies and in more mature glomeruli in a mesangial distribution. We also isolated and characterized cells from rat metanephric mesenchyme. Metanephric mesenchymal cells express vimentin and alpha-smooth muscle actin but not cytokeratin. These cells also express functional PDGFR beta, as demonstrated by autophosphorylation of the receptor as well as activation of phosphatidylinositol 3 kinase in response to PDGF B-chain homodimer. PDGF B-chain also induces migration and proliferation of metanephric mesenchymal cells. Taken together with the fact that PDGF B-chain is expressed in the glomerular epithelium and mesangial area, as demonstrated in the human embryonic kidney, we suggest that PDGF B-chain acts in a paracrine fashion to stimulate the migration and proliferation of mesangial cell precursors from undifferentiated metanephric mesenchyme to the mesangial area. PDGF B-chain also likely stimulates proliferation of mesangial cell precursors in an autocrine fashion once these cells migrate to the glomerular tuft.



Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
PdgfrbRatmetanephric comma-shaped body morphogenesis involved_inIEP PMID:10734101UniProt 
PdgfrbRatmetanephric glomerulus morphogenesis involved_inIEP PMID:10734101UniProt 
PdgfrbRatmetanephric mesenchymal cell migration involved_inIDA PMID:10734101UniProt 
PdgfrbRatmetanephric mesenchyme development involved_inIEP PMID:10734101UniProt 
PdgfrbRatmetanephric S-shaped body morphogenesis involved_inIEP PMID:10734101UniProt 

Objects Annotated

Genes (Rattus norvegicus)
Pdgfrb  (platelet derived growth factor receptor beta)


Additional Information