Protein kinase D up-regulates transcription of VEGF receptor-2 in endothelial cells by suppressing nuclear localization of the transcription factor AP2β
Name:
Final PDF_09042019.pdf
Size:
1.769Mb
Format:
PDF
Description:
Final Accepted Manuscript
Author
Wang, YingHoeppner, Luke H.
Angom, Ramcharan Singh
Wang, Enfeng
Dutta, Shamit
Doeppler, Heike R.
Wang, Fei
Shen, Tao
Scarisbrick, Isobel A.
Guha, Sushovan
Storz, Peter
Bhattacharya, Resham
Mukhopadhyay, Debabrata
Affiliation
Univ Arizona, Coll MedIssue Date
2019-09-06Keywords
vascular endothelial growth factor (VEGF)angiogenesis
protein kinase D (PKD)
signal transduction
endothelial cell
vascular endothelial growth factor receptor-2
Metadata
Show full item recordCitation
Wang, Y., Hoeppner, L., Angom, R., Wang, E., Dutta, S., & Doeppler, H. et al. (2019). Protein kinase D up-regulates transcription of VEGF receptor-2 in endothelial cells by suppressing nuclear localization of the transcription factor AP2β. Journal Of Biological Chemistry, 294(43), 15759-15767. doi: 10.1074/jbc.ra119.010152Journal
JOURNAL OF BIOLOGICAL CHEMISTRYRights
Copyright © 2019 Wang et al. Published under exclusive license by The American Society for Biochemistry and Molecular Biology, Inc.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
Vascular endothelial growth factor A (VEGF) signals primarily through its cognate receptor VEGF receptor-2 (VEGFR-2) to control vasculogenesis and angiogenesis, key physiological processes in cardiovascular disease and cancer. In human umbilical vein endothelial cells (HUVECs), knockdown of protein kinase D-1 (PKD1) or PKD2 down-regulates VEGFR-2 expression and inhibits VEGF-induced cell proliferation and migration. However, how PKD regulates VEGF signaling is unclear. Previous bioinformatics analyses have identified binding sites for the transcription factor activating enhancer-binding protein 2 (AP2) in the VEGFR-2 promoter. Using ChIP analyses, here we found that PKD knockdown in HUVECs increases binding of AP2β to the VEGFR-2 promoter. Luciferase reporter assays with serial deletions of AP2-binding sites within the VEGFR-2 promoter revealed that its transcriptional activity negatively correlates with the number of these sites. Next we demonstrated that AP2β up-regulation decreases VEGFR-2 expression and that loss of AP2β enhances VEGFR-2 expression in HUVECs. In vivo experiments confirmed increased VEGFR-2 immunostaining in the spinal cord of AP2β knockout mouse embryos. Mechanistically, we observed that PKD phosphorylates AP2β at Ser258 and Ser277 and suppresses its nuclear accumulation. Inhibition of PKD activity with a pan-PKD inhibitor increased AP2β nuclear localization, and overexpression of both WT and constitutively active PKD1 or PKD2 reduced AP2β nuclear localization through a Ser258- and Ser277-dependent mechanism. Furthermore, substitution of Ser277 in AP2β increased its binding to the VEGFR-2 promoter. Our findings uncover evidence of a molecular pathway that regulates VEGFR-2 expression, insights that may shed light on the etiology of diseases associated with aberrant VEGF/VEGFR signaling.ISSN
0021-9258PubMed ID
31492751Version
Final accepted manuscriptSponsors
NHLBI, National Institutes of HealthUnited States Department of Health & Human ServicesNational Institutes of Health (NIH) - USANIH National Heart Lung & Blood Institute (NHLBI) [HL140411]; NCI, National Institutes of HealthUnited States Department of Health & Human ServicesNational Institutes of Health (NIH) - USANIH National Cancer Institute (NCI) [CA78383-20, CA187035, CA200572]; Florida Department of Health Cancer Research Chair Fund Florida Grant [3J-02]; American Heart AssociationAmerican Heart Association [13POST14510025, 19CDA34700013]; Mayo Clinic Ted and Loretta Rogers Cardiovascular Career Development Award Honoring Hugh C. Smithae974a485f413a2113503eed53cd6c53
10.1074/jbc.ra119.010152