PMID- 34710824 OWN - NLM STAT- MEDLINE DCOM- 20211228 LR - 20221211 IS - 1090-2104 (Electronic) IS - 0006-291X (Print) IS - 0006-291X (Linking) VI - 582 DP - 2021 Dec 10 TI - Adropin decreases endothelial monolayer permeability after cell-free hemoglobin exposure and reduces MCP-1-induced macrophage transmigration. PG - 105-110 LID - S0006-291X(21)01439-X [pii] LID - 10.1016/j.bbrc.2021.10.032 [doi] AB - BACKGROUND: Cell-free heme-containing proteins mediate endothelial injury in a variety of disease states including subarachnoid hemorrhage and sepsis by increasing endothelial permeability. Inflammatory cells are also attracted to sites of vascular injury by monocyte chemotactic protein 1 (MCP-1) and other chemokines. We have identified a novel peptide hormone, adropin, that protects against hemoglobin-induced endothelial permeability and MCP-1-induced macrophage migration. METHODS: Human microvascular endothelial cells were exposed to cell-free hemoglobin (CFH) with and without adropin treatment before measuring monolayer permeability using a FITC-dextran tracer assay. mRNA and culture media were collected for molecular studies. We also assessed the effect of adropin on macrophage movement across the endothelial monolayer using an MCP-1-induced migration assay. RESULTS: CFH exposure decreases adropin expression and increases paracellular permeability of human endothelial cells. Treating cells with synthetic adropin protects against the increased permeability observed during the natural injury progression. Cell viability was similar in all groups and Hmox1 expression was not affected by adropin treatment. MCP-1 potently induced macrophage migration across the endothelial monolayer and adropin treatment effectively reduced this phenomenon. CONCLUSIONS: Endothelial injury is a hallmark of many disease states. Our results suggest that adropin treatment could be a valuable strategy in preventing heme-mediated endothelial injury and macrophage infiltration. Further investigation of adropin therapy in animal models and human tissue specimens is needed. CI - Copyright (c) 2021 Elsevier Inc. All rights reserved. FAU - Dodd, William S AU - Dodd WS AD - Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, FL, USA. FAU - Patel, Devan AU - Patel D AD - College of Medicine, Florida State University, Tallahassee, FL, USA. FAU - Lucke-Wold, Brandon AU - Lucke-Wold B AD - Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, FL, USA. FAU - Hosaka, Koji AU - Hosaka K AD - Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, FL, USA. FAU - Chalouhi, Nohra AU - Chalouhi N AD - Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, FL, USA. FAU - Hoh, Brian L AU - Hoh BL AD - Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, FL, USA. Electronic address: brian.hoh@neurosurgery.ufl.edu. LA - eng GR - R01 NS110710/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20211016 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Enho protein, human) RN - 0 (Hemoglobins) RN - 0 (Intercellular Signaling Peptides and Proteins) SB - IM MH - Cell Line MH - Cell Membrane Permeability/drug effects MH - Cell Movement/*drug effects MH - Chemokine CCL2/*antagonists & inhibitors/pharmacology MH - Cytoprotection/physiology MH - Endothelial Cells/cytology/*drug effects/metabolism MH - Hemoglobins/*antagonists & inhibitors/pharmacology MH - Humans MH - Intercellular Signaling Peptides and Proteins/*pharmacology MH - Macrophages/cytology/*drug effects PMC - PMC8890595 MID - NIHMS1779868 OTO - NOTNLM OT - Adropin OT - Endothelium OT - Hemoglobin OT - Hemorrhage OT - Sepsis COIS- Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Brian L. Hoh reports financial support was provided by National Institutes of Health. William S. Dodd & Brian L. Hoh reports financial support was provided by The Brain Aneurysm Foundation. EDAT- 2021/10/29 06:00 MHDA- 2021/12/29 06:00 PMCR- 2022/12/10 CRDT- 2021/10/28 20:30 PHST- 2021/09/07 00:00 [received] PHST- 2021/10/15 00:00 [accepted] PHST- 2021/10/29 06:00 [pubmed] PHST- 2021/12/29 06:00 [medline] PHST- 2021/10/28 20:30 [entrez] PHST- 2022/12/10 00:00 [pmc-release] AID - S0006-291X(21)01439-X [pii] AID - 10.1016/j.bbrc.2021.10.032 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2021 Dec 10;582:105-110. doi: 10.1016/j.bbrc.2021.10.032. Epub 2021 Oct 16.