PMID- 32457656 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220716 IS - 1664-042X (Print) IS - 1664-042X (Electronic) IS - 1664-042X (Linking) VI - 11 DP - 2020 TI - 2-Chlorofatty Aldehyde Elicits Endothelial Cell Activation. PG - 460 LID - 10.3389/fphys.2020.00460 [doi] LID - 460 AB - Endothelial activation and dysfunction are hallmarks of inflammation. Neutrophil-vascular endothelium interactions have significant effects on vascular wall physiology and pathology. Myeloperoxidase (MPO)-derived products released from activated neutrophils can mediate the inflammatory response and contribute to endothelial dysfunction. 2-Chlorofatty aldehyde (2-ClFALD) is the direct oxidation product of MPO-derived hypochlorous acid (HOCl) targeting plasmalogen phospholipids. The role of 2-ClFALD in endothelial dysfunction is poorly understood and may be dependent on the vascular bed. This study compared the role of 2-ClFALD in eliciting endothelial dysfunction in human coronary artery endothelial cells (HCAEC), human lung microvascular endothelial cells (HLMVEC), and human kidney endothelial cells (HKEC). Profound increases in selectin surface expression as well as ICAM-1 and VCAM-1 surface expression were observed in HCAEC and HLMVEC. The surface expression of these adherence molecules resulted in robust adherence of neutrophils and platelets to 2-ClFALD treated endothelial cells. In contrast to HCAEC and HLMVEC, 2-ClFALD-treated HKEC had substantially reduced adherence molecule surface expression with no resulting increase in platelet adherence. 2-ClFALD-treated HKEC did have an increase in neutrophil adherence. All three endothelial cell lines treated with 2-ClFALD displayed a time-dependent loss of barrier function. Further studies revealed 2-ClHDyA localizes to ER and Golgi when using a synthetic alkyne analog of 2-ClFALD in HCAEC and HLMVEC. These findings indicate 2-ClFALDs promote endothelial cell dysfunction with disparate degrees of responsiveness depending on the vascular bed of origin. CI - Copyright (c) 2020 McHowat, Shakya and Ford. FAU - McHowat, Jane AU - McHowat J AD - Department of Pathology, Saint Louis University School of Medicine, St. Louis, MO, United States. AD - Center for Cardiovascular Research, Saint Louis University School of Medicine, St. Louis, MO, United States. FAU - Shakya, Shubha AU - Shakya S AD - Center for Cardiovascular Research, Saint Louis University School of Medicine, St. Louis, MO, United States. AD - Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, St. Louis, MO, United States. FAU - Ford, David A AU - Ford DA AD - Center for Cardiovascular Research, Saint Louis University School of Medicine, St. Louis, MO, United States. AD - Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, St. Louis, MO, United States. LA - eng GR - R01 GM115553/GM/NIGMS NIH HHS/United States GR - R01 GM129508/GM/NIGMS NIH HHS/United States GR - R01 HL137006/HL/NHLBI NIH HHS/United States GR - R01 HL137915/HL/NHLBI NIH HHS/United States PT - Journal Article DEP - 20200508 PL - Switzerland TA - Front Physiol JT - Frontiers in physiology JID - 101549006 PMC - PMC7225355 OTO - NOTNLM OT - endothelial cells OT - fatty acids OT - inflammation OT - lipid mediators OT - plasmalogens OT - vascular biology EDAT- 2020/05/28 06:00 MHDA- 2020/05/28 06:01 PMCR- 2020/05/08 CRDT- 2020/05/28 06:00 PHST- 2019/10/30 00:00 [received] PHST- 2020/04/16 00:00 [accepted] PHST- 2020/05/28 06:00 [entrez] PHST- 2020/05/28 06:00 [pubmed] PHST- 2020/05/28 06:01 [medline] PHST- 2020/05/08 00:00 [pmc-release] AID - 10.3389/fphys.2020.00460 [doi] PST - epublish SO - Front Physiol. 2020 May 8;11:460. doi: 10.3389/fphys.2020.00460. eCollection 2020.