RGD Reference Report - Inhibition of PDGF beta-receptor tyrosine phosphorylation and its downstream intracellular signal transduction in rat aortic vascular smooth muscle cells by kaempferol. - Rat Genome Database

Send us a Message



Submit Data |  Help |  Video Tutorials |  News |  Publications |  Download |  REST API |  Citing RGD |  Contact   

Inhibition of PDGF beta-receptor tyrosine phosphorylation and its downstream intracellular signal transduction in rat aortic vascular smooth muscle cells by kaempferol.

Authors: Kim, SY  Jin, YR  Lim, Y  Kim, JH  Cho, MR  Hong, JT  Yoo, HS  Yun, YP 
Citation: Kim SY, etal., Planta Med. 2005 Jul;71(7):599-603.
RGD ID: 2292204
Pubmed: PMID:16041643   (View Abstract at PubMed)
DOI: DOI:10.1055/s-2005-871263   (Journal Full-text)

Kaempferol, a flavonoid present in human diet and plants, has been known to show cardiovascular protection via its anti-oxidant activity. In this study, we have investigated the effect of kaempferol on the proliferation of primary cultured rat aortic vascular smooth muscle cells (VSMCs). Kaempferol significantly inhibited 50 ng/mL platelet-derived growth factor (PDGF)-BB-induced proliferation and [3H]-thymidine incorporation into DNA at concentrations of 5, 20 and 50 microM without any cytotoxicity. Kaempferol also inhibited the c-fos mRNA expression induced by PDGF-BB concentration-dependently. In addition, consistent with the inhibition of cell proliferation and c-fos mRNA expression, kaempferol inhibited the PDGF beta-receptor (Rbeta) phosphorylation in a concentration-dependent manner. Accordingly, the downstream signal transductions of PDGF-Rbeta such as ERK1/2, Akt and PLC-gamma1 phosphorylation were also inhibited by kaempferol in the same pattern. These findings suggest that, in addition to its anti-oxidant activity, the cardiovascular protective effect of kaempferol may be mediated, at least in part, by the suppression of VSMC proliferation, which is due to the inhibition of PDGF-Rbeta tyrosine phosphorylation and its downstream intracellular signal transduction.

Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
response to organic cyclic compound  IEP 2292204 RGD 

Objects Annotated

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


Additional Information