PMID- 30768972 OWN - NLM STAT- MEDLINE DCOM- 20191219 LR - 20200315 IS - 1096-0333 (Electronic) IS - 0041-008X (Print) IS - 0041-008X (Linking) VI - 367 DP - 2019 Mar 15 TI - PCB 126 induces monocyte/macrophage polarization and inflammation through AhR and NF-kappaB pathways. PG - 71-81 LID - S0041-008X(19)30055-9 [pii] LID - 10.1016/j.taap.2019.02.006 [doi] AB - Polychlorinated biphenyls (PCBs) are persistent organic pollutants that contribute to inflammatory diseases such as atherosclerosis, and macrophages play a key role in the overall inflammatory response. Depending on specific environmental stimuli, macrophages can be polarized either to pro-inflammatory (e.g., M1) or anti-inflammatory (e.g., M2) phenotypes. We hypothesize that dioxin-like PCBs can contribute to macrophage polarization associated with inflammation. To test this hypothesis, human monocytes (THP-1) were differentiated to macrophages and subsequently exposed to PCB 126. Exposure to PCB 126, but not to PCB 153 or 118, significantly induced the expression of inflammatory cytokines, including TNFalpha and IL-1beta, suggesting polarization to the pro-inflammatory M1 phenotype. Additionally, monocyte chemoattractant protein-1 (MCP-1) was increased in PCB 126-activated macrophages, suggesting induction of chemokines which regulate immune cell recruitment and infiltration of monocytes/macrophages into vascular tissues. In addition, oxidative stress sensitive markers including nuclear factor (erythroid-derived 2)-like 2 (NFE2L2; Nrf2) and down-stream genes, such as heme oxygenase 1 (HMOX1) and NAD(P)H quinone oxidoreductase 1 (NQO1), were induced following PCB 126 exposure. Since dioxin-like PCBs may elicit inflammatory cascades through multiple mechanisms, we then pretreated macrophages with both aryl hydrocarbon receptor (AhR) and NF-kappaB antagonists prior to PCB treatment. The NF-kappaB antagonist BMS-345541 significantly decreased mRNA and protein levels of multiple cytokines by approximately 50% compared to PCB treatment alone, but the AhR antagonist CH-223191 was protective to a lesser degree. Our data demonstrate the involvement of PCB 126 in macrophage polarization and inflammation, indicating another important role of dioxin-like PCBs in the pathology of atherosclerosis. CI - Copyright (c) 2019 Elsevier Inc. All rights reserved. FAU - Wang, Chunyan AU - Wang C AD - University of Kentucky Superfund Research Center, University of Kentucky, Lexington, KY, USA. FAU - Petriello, Michael C AU - Petriello MC AD - University of Kentucky Superfund Research Center, University of Kentucky, Lexington, KY, USA; Cardiovascular Medicine, University of Kentucky, Lexington, KY, USA. FAU - Zhu, Beibei AU - Zhu B AD - Department of Internal Medicine, Division of Endocrinology, Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, USA. FAU - Hennig, Bernhard AU - Hennig B AD - University of Kentucky Superfund Research Center, University of Kentucky, Lexington, KY, USA; Department of Animal and Food Sciences, University of Kentucky, Lexington, KY, USA. Electronic address: bhennig@uky.edu. LA - eng GR - K99 ES028734/ES/NIEHS NIH HHS/United States GR - P42 ES007380/ES/NIEHS NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20190213 PL - United States TA - Toxicol Appl Pharmacol JT - Toxicology and applied pharmacology JID - 0416575 RN - 0 (AHR protein, human) RN - 0 (Basic Helix-Loop-Helix Transcription Factors) RN - 0 (Cytokines) RN - 0 (Inflammation Mediators) RN - 0 (NF-kappa B) RN - 0 (Receptors, Aryl Hydrocarbon) RN - 2B2AQE8U50 (2,3',4,4',5-pentachlorobiphenyl) RN - DFC2HB4I0K (Polychlorinated Biphenyls) RN - TSH69IA9XF (3,4,5,3',4'-pentachlorobiphenyl) RN - ZRU0C9E32O (2,4,5,2',4',5'-hexachlorobiphenyl) SB - IM MH - Basic Helix-Loop-Helix Transcription Factors/*agonists/metabolism MH - Cell Differentiation/*drug effects MH - Cytokines/*metabolism MH - Humans MH - Inflammation/*chemically induced/metabolism/pathology MH - Inflammation Mediators/*metabolism MH - Macrophages/*drug effects/metabolism/pathology MH - NF-kappa B/*metabolism MH - Phenotype MH - Polychlorinated Biphenyls/*toxicity MH - Receptors, Aryl Hydrocarbon/*agonists/metabolism MH - Signal Transduction/drug effects MH - THP-1 Cells PMC - PMC6402591 MID - NIHMS1521951 OTO - NOTNLM OT - Atherosclerosis OT - Cardiovascular disease OT - Dioxins OT - Inflammation OT - Monocyte macrophage polarization OT - PCB 126 EDAT- 2019/02/16 06:00 MHDA- 2019/12/20 06:00 PMCR- 2020/03/15 CRDT- 2019/02/16 06:00 PHST- 2018/09/28 00:00 [received] PHST- 2019/01/25 00:00 [revised] PHST- 2019/02/11 00:00 [accepted] PHST- 2019/02/16 06:00 [pubmed] PHST- 2019/12/20 06:00 [medline] PHST- 2019/02/16 06:00 [entrez] PHST- 2020/03/15 00:00 [pmc-release] AID - S0041-008X(19)30055-9 [pii] AID - 10.1016/j.taap.2019.02.006 [doi] PST - ppublish SO - Toxicol Appl Pharmacol. 2019 Mar 15;367:71-81. doi: 10.1016/j.taap.2019.02.006. Epub 2019 Feb 13.