Show simple item record

dc.contributor.authorWang, Ying
dc.contributor.authorHoeppner, Luke H.
dc.contributor.authorAngom, Ramcharan Singh
dc.contributor.authorWang, Enfeng
dc.contributor.authorDutta, Shamit
dc.contributor.authorDoeppler, Heike R.
dc.contributor.authorWang, Fei
dc.contributor.authorShen, Tao
dc.contributor.authorScarisbrick, Isobel A.
dc.contributor.authorGuha, Sushovan
dc.contributor.authorStorz, Peter
dc.contributor.authorBhattacharya, Resham
dc.contributor.authorMukhopadhyay, Debabrata
dc.date.accessioned2020-01-21T20:19:49Z
dc.date.available2020-01-21T20:19:49Z
dc.date.issued2019-09-06
dc.identifier.citationWang, 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.ra119.010152en_US
dc.identifier.issn0021-9258
dc.identifier.pmid31492751
dc.identifier.doi10.1074/jbc.ra119.010152
dc.identifier.urihttp://hdl.handle.net/10150/636695
dc.description.abstractVascular 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.en_US
dc.description.sponsorshipNHLBI, 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. Smithen_US
dc.language.isoenen_US
dc.publisherAMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INCen_US
dc.rightsCopyright © 2019 Wang et al. Published under exclusive license by The American Society for Biochemistry and Molecular Biology, Inc.en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectvascular endothelial growth factor (VEGF)en_US
dc.subjectangiogenesisen_US
dc.subjectprotein kinase D (PKD)en_US
dc.subjectsignal transductionen_US
dc.subjectendothelial cellen_US
dc.subjectvascular endothelial growth factor receptor-2en_US
dc.titleProtein kinase D up-regulates transcription of VEGF receptor-2 in endothelial cells by suppressing nuclear localization of the transcription factor AP2βen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Coll Meden_US
dc.identifier.journalJOURNAL OF BIOLOGICAL CHEMISTRYen_US
dc.description.collectioninformationThis 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.en_US
dc.eprint.versionFinal accepted manuscripten_US
dc.source.volume294
dc.source.issue43
dc.source.beginpage15759-15767
refterms.dateFOA2020-01-21T20:19:50Z


Files in this item

Thumbnail
Name:
Final PDF_09042019.pdf
Size:
1.769Mb
Format:
PDF
Description:
Final Accepted Manuscript

This item appears in the following Collection(s)

Show simple item record