PMID- 32054096 OWN - NLM STAT- MEDLINE DCOM- 20210226 LR - 20211204 IS - 2073-4409 (Electronic) IS - 2073-4409 (Linking) VI - 9 IP - 2 DP - 2020 Feb 11 TI - c-Jun, Foxo3a, and c-Myc Transcription Factors are Key Regulators of ATP-Mediated Angiogenic Responses in Pulmonary Artery Vasa Vasorum Endothelial Cells. LID - 10.3390/cells9020416 [doi] LID - 416 AB - Angiogenic vasa vasorum (VV) expansion plays an essential role in the pathogenesis of hypoxia-induced pulmonary hypertension (PH), a cardiovascular disease. We previously showed that extracellular ATP released under hypoxic conditions is an autocrine/paracrine, the angiogenic factor for pulmonary artery (PA) VV endothelial cells (VVECs), acting via P2Y purinergic receptors (P2YR) and the Phosphoinositide 3-kinase (PI3K)-Akt-Mammalian Target of Rapamycin (mTOR) signaling. To further elucidate the molecular mechanisms of ATP-mediated VV angiogenesis, we determined the profile of ATP-inducible transcription factors (TFs) in VVECs using a TranSignal protein/DNA array. C-Jun, c-Myc, and Foxo3 were found to be upregulated in most VVEC populations and formed nodes connecting several signaling networks. siRNA-mediated knockdown (KD) of these TFs revealed their critical role in ATP-induced VVEC angiogenic responses and the regulation of downstream targets involved in tissue remodeling, cell cycle control, expression of endothelial markers, cell adhesion, and junction proteins. Our results showed that c-Jun was required for the expression of ATP-stimulated angiogenic genes, c-Myc was repressive to anti-angiogenic genes, and Foxo3a predominantly controlled the expression of anti-apoptotic and junctional proteins. The findings from our study suggest that pharmacological targeting of the components of P2YR-PI3K-Akt-mTOR axis and specific TFs reduced ATP-mediated VVEC angiogenic response and may have a potential translational significance in attenuating pathological vascular remodeling. FAU - Strassheim, Derek AU - Strassheim D AD - University of Colorado Denver, Department of Medicine Cardiovascular and Pulmonary Research Laboratory, Aurora, CO 80045, USA. FAU - Karoor, Vijaya AU - Karoor V AD - University of Colorado Denver, Department of Medicine Cardiovascular and Pulmonary Research Laboratory, Aurora, CO 80045, USA. FAU - Nijmeh, Hala AU - Nijmeh H AD - University of Colorado Denver, Department of Pediatrics, Division of Critical Care Medicine, Aurora, CO 80045, USA. FAU - Weston, Philip AU - Weston P AD - University of Colorado Denver, Department of Pediatrics, Division of Critical Care Medicine, Aurora, CO 80045, USA. FAU - Lapel, Martin AU - Lapel M AD - University of Colorado Denver, Department of Pediatrics, Division of Critical Care Medicine, Aurora, CO 80045, USA. FAU - Schaack, Jerome AU - Schaack J AD - University of Colorado Denver, Department of Microbiology, Aurora, CO 80045, USA. FAU - Sullivan, Timothy AU - Sullivan T AD - University of Colorado Denver, Department of Medicine Cardiovascular and Pulmonary Research Laboratory, Aurora, CO 80045, USA. FAU - Dempsey, Edward C AU - Dempsey EC AD - University of Colorado Denver, Department of Medicine Cardiovascular and Pulmonary Research Laboratory, Aurora, CO 80045, USA. AD - Rocky Mountain Regional VA Medical Center, Aurora, CO 80045, USA. FAU - Stenmark, Kurt R AU - Stenmark KR AD - University of Colorado Denver, Department of Medicine Cardiovascular and Pulmonary Research Laboratory, Aurora, CO 80045, USA. AD - University of Colorado Denver, Department of Pediatrics, Division of Critical Care Medicine, Aurora, CO 80045, USA. FAU - Gerasimovskaya, Evgenia AU - Gerasimovskaya E AD - University of Colorado Denver, Department of Medicine Cardiovascular and Pulmonary Research Laboratory, Aurora, CO 80045, USA. AD - University of Colorado Denver, Department of Pediatrics, Division of Critical Care Medicine, Aurora, CO 80045, USA. LA - eng GR - R01 HL086783/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20200211 PL - Switzerland TA - Cells JT - Cells JID - 101600052 RN - 0 (FOXO3 protein, human) RN - 0 (Forkhead Box Protein O3) RN - 0 (MYC protein, human) RN - 0 (Proto-Oncogene Proteins c-myc) RN - 0 (Receptors, Purinergic P2Y) RN - 8L70Q75FXE (Adenosine Triphosphate) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - EC 2.7.11.24 (JNK Mitogen-Activated Protein Kinases) SB - IM MH - Adenosine Triphosphate/metabolism MH - Endothelial Cells/metabolism/pathology MH - Forkhead Box Protein O3/*genetics MH - Humans MH - Hypertension, Pulmonary/*genetics/pathology MH - JNK Mitogen-Activated Protein Kinases/*genetics MH - Neovascularization, Pathologic MH - Phosphatidylinositol 3-Kinases/genetics MH - Proto-Oncogene Proteins c-akt/genetics MH - Proto-Oncogene Proteins c-myc/*genetics MH - Pulmonary Artery/growth & development/metabolism/pathology MH - Receptors, Purinergic P2Y/genetics MH - Signal Transduction/genetics MH - TOR Serine-Threonine Kinases/genetics MH - Vasa Vasorum/*growth & development/pathology MH - Vascular Remodeling/genetics PMC - PMC7072142 OTO - NOTNLM OT - Akt OT - Foxo3a OT - angiogenesis OT - c-Jun OT - c-Myc OT - endothelial cells OT - extracellular ATP OT - mTOR transcription factors OT - vasa vasorum COIS- The authors declare no conflicts of interest. EDAT- 2020/02/15 06:00 MHDA- 2021/02/27 06:00 PMCR- 2020/02/01 CRDT- 2020/02/15 06:00 PHST- 2019/12/19 00:00 [received] PHST- 2020/02/06 00:00 [revised] PHST- 2020/02/07 00:00 [accepted] PHST- 2020/02/15 06:00 [entrez] PHST- 2020/02/15 06:00 [pubmed] PHST- 2021/02/27 06:00 [medline] PHST- 2020/02/01 00:00 [pmc-release] AID - cells9020416 [pii] AID - cells-09-00416 [pii] AID - 10.3390/cells9020416 [doi] PST - epublish SO - Cells. 2020 Feb 11;9(2):416. doi: 10.3390/cells9020416.