ERG Is a member of the ETS transcription factor family that has recently been shown to participate in the regulation of selected endothelial-restricted genes including vWF, endoglin, and VE-cadherin. Our preliminary studies demonstrate several unique features of ERG. First, ERG exhibits a highly endothelial cell (EC)-restricted expression pattern throughout vascular development and in several adult tissues. Second, during embryonic stem (ES) cell differentiation, ERG is first expressed in a subset of VEGF-R2+ cells that also express VE-cadherin. Third, ERG closely tracks with stem cells that differentiate along the endothelial lineage. Fourth, downregulation of ERG in ES cells markedly inhibits EC differentiation and vascular structure formation in embryoid bodies (EB). The overall hypothesis for this proposal is that ERG is a critical transcriptional regulator of EC differentiation and vascular development.
Aim I will define the role of ERG during vascular development. ERG is expressed in an EC-restricted pattern within several tissues and organs during early stages of vascular development. The hypothesis for this aim is that ERG expression is required for vascular development.
Aim II will define the transcriptional and epigenetic regulation of endothelial differentiation by ERG The hypothesis for this aim is that ERG functions at multiple levels to regulate EC differentiation. ERG may act alone or in combination with other transcription factors to regulate EC-specific target genes such as VE-cadherin.
Aim III will examine the role of ERG in regulating EPC function and postnatal vasculogenesis Endothelial progenitor cells (EPC) represent an important cell type that can promote vascular repair, angiogenesis and post-natal vasculogenesis. The hypothesis for this aim is that ERG is a critical transcriptional regulator of EPC function and post-natal vasculogenesis.
The transcriptional regulation of EC differentiation remains poorly understood. This proposal is significant in that we believe we have identified ERG as a critical transcriptional regulator of EC differentiation. EC differentiation is a developmental process that is recapitulated under pathologic conditions such as coronary and limb ischemia to promote angiogenesis and post-natal vasculogenesis. The identification of specific transcription factors such as ERG that regulate EC differentiation will not only enhance our basic understanding of early stages of EC differentiation and vascular development but may also lead to the development of novel therapeutic approaches of enhancing the process of tissue revascularization in patients with ischemic heart and/or peripheral vascular disease.
|Rowe, Glenn C; Raghuram, Srilatha; Jang, Cholsoon et al. (2014) PGC-1? induces SPP1 to activate macrophages and orchestrate functional angiogenesis in skeletal muscle. Circ Res 115:504-17|
|Turgeon, Paul J; Sukumar, Aravin N; Marsden, Philip A (2014) Epigenetics of Cardiovascular Disease - A New "Beat" in Coronary Artery Disease. Med Epigenet 2:37-52|
|Aird, William C; Mosnier, Laurent O; Fairhurst, Rick M (2014) Plasmodium falciparum picks (on) EPCR. Blood 123:163-7|
|Bai, Aiping; Moss, Alan; Kokkotou, Efi et al. (2014) CD39 and CD161 modulate Th17 responses in Crohn's disease. J Immunol 193:3366-77|
|Bian, Shu; Sun, Xiaofeng; Bai, Aiping et al. (2013) P2X7 integrates PI3K/AKT and AMPK-PRAS40-mTOR signaling pathways to mediate tumor cell death. PLoS One 8:e60184|
|Adams, William J; Zhang, Yuzhi; Cloutier, Jennifer et al. (2013) Functional vascular endothelium derived from human induced pluripotent stem cells. Stem Cell Reports 1:105-13|
|Shirodkar, Apurva V; St Bernard, Rosanne; Gavryushova, Anna et al. (2013) A mechanistic role for DNA methylation in endothelial cell (EC)-enriched gene expression: relationship with DNA replication timing. Blood 121:3531-40|
|Webster, Andrew L H; Yan, Matthew Shu-Ching; Marsden, Philip A (2013) Epigenetics and cardiovascular disease. Can J Cardiol 29:46-57|
|Sun, Xiaofeng; Han, Lihui; Seth, Pankaj et al. (2013) Disordered purinergic signaling and abnormal cellular metabolism are associated with development of liver cancer in Cd39/ENTPD1 null mice. Hepatology 57:205-16|
|Petruzziello-Pellegrini, Tania N; Moslemi-Naeini, Mozhgan; Marsden, Philip A (2013) New insights into Shiga toxin-mediated endothelial dysfunction in hemolytic uremic syndrome. Virulence 4:556-63|
Showing the most recent 10 out of 89 publications