Related Experiment Video
Updated: Aug 19, 2026

A Simple Bioassay for the Evaluation of Vascular Endothelial Growth Factors
Published on: March 15, 2016
Protein kinase C signalling pathway is involved in the regulation of vascular endothelial growth factor expression in
E Chabannes1, S Fauconnet, S Bernardini
1Service d'Urologie, Hôpital Saint-Jacques, 2, Place St. Jacques, 25000, Besancon, France. echabannes@chu-besancon.fr
Abstract:
Vascular endothelial growth factor (VEGF) is a potent angiogenic factor associated with the growth and metastasis of various cancers and plays a prominent role in vesical angiogenesis regulation. In this study, we investigated the effect of the phorbol 12-myristate 13-acetate (PMA) on the expression of VEGF in human bladder transitional carcinoma cells (RT4). RT4 cells expressed three VEGF isoforms (VEGF(189), VEGF(165), VEGF(121)). PMA increased VEGF mRNA expression time-dependently with a peak at 4 h. PMA increased the half-life of VEGF mRNA. The amount of VEGF protein in conditioned media was increased by PMA in a dose-dependent manner with a maximal effect at 10(-7) M. Staurosporine and calphostin C (PKC inhibitors) decreased PMA-induced VEGF mRNA expression as opposed to protein kinase A or cyclic nucleotide-dependent protein kinase inhibitors. Thus, in RT4 cells, VEGF expression is up-regulated by PMA via the PKC signalling pathway and according to a posttranscriptional mechanism.
More Related Videos
09:32Light-mediated Reversible Modulation of the Mitogen-activated Protein Kinase Pathway during Cell Differentiation and Xenopus Embryonic Development
Published on: June 15, 2017
07:49Molecular Analysis of Endothelial-mesenchymal Transition Induced by Transforming Growth Factor-β Signaling
Published on: August 3, 2018
Related Concept Videos
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
Regulation of Angiogenesis and Blood Supply
Interactions Between Signaling Pathways
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Amplifying Signals via Enzymatic Cascade
MAPK Signaling Cascades
PI3K/mTOR/AKT Signaling Pathway