PMID- 25242651 OWN - NLM STAT- MEDLINE DCOM- 20150729 LR - 20230705 IS - 1878-7568 (Electronic) IS - 1742-7061 (Print) IS - 1742-7061 (Linking) VI - 11 DP - 2015 Jan TI - Loss of monocyte chemoattractant protein-1 alters macrophage polarization and reduces NFkappaB activation in the foreign body response. PG - 37-47 LID - S1742-7061(14)00405-X [pii] LID - 10.1016/j.actbio.2014.09.022 [doi] AB - Implantation of biomaterials elicits a foreign body response characterized by fusion of macrophages to form foreign body giant cells and fibrotic encapsulation. Studies of the macrophage polarization involved in this response have suggested that alternative (M2) activation is associated with more favorable outcomes. Here we investigated this process in vivo by implanting mixed cellulose ester filters or polydimethylsiloxane disks in the peritoneal cavity of wild-type (WT) and monocyte chemoattractant protein-1 (MCP-1) knockout mice. We analyzed classical (M1) and alternative (M2) gene expression via quantitative polymerase chain reaction, immunohistochemistry and enzyme-linked immunosorbent assay in both non-adherent cells isolated by lavage and implant-adherent cells. Our results show that macrophages undergo unique activation that displays features of both M1 and M2 polarization including induction of tumor necrosis factor alpha (TNF), which induces the expression and nuclear translocation of p50 and RelA determined by immunofluorescence and Western blot. Both processes were compromised in fusion-deficient MCP-1 KO macrophages in vitro and in vivo. Furthermore, inclusion of BAY 11-7028, an inhibitor of NFkappaB activation, reduced nuclear translocation of RelA and fusion in WT macrophages. Our studies suggest that peritoneal implants elicit a unique macrophage polarization phenotype leading to induction of TNF and activation of the NFkappaB pathway. CI - Published by Elsevier Ltd. FAU - Moore, Laura Beth AU - Moore LB AD - Department of Genetics, Yale University, New Haven, CT 06520, USA; Interdepartmental Program in Vascular Biology and Therapeutics, Yale University, New Haven, CT 06520, USA. FAU - Sawyer, Andrew J AU - Sawyer AJ AD - Department of Pathology, Yale University, New Haven, CT 06520, USA; Interdepartmental Program in Vascular Biology and Therapeutics, Yale University, New Haven, CT 06520, USA. FAU - Charokopos, Antonios AU - Charokopos A AD - Interdepartmental Program in Vascular Biology and Therapeutics, Yale University, New Haven, CT 06520, USA. FAU - Skokos, Eleni A AU - Skokos EA AD - Department of Pathology, Yale University, New Haven, CT 06520, USA; Interdepartmental Program in Vascular Biology and Therapeutics, Yale University, New Haven, CT 06520, USA. FAU - Kyriakides, Themis R AU - Kyriakides TR AD - Department of Pathology, Yale University, New Haven, CT 06520, USA; Department of Biomedical Engineering, Yale University, New Haven, CT 06520, USA; Interdepartmental Program in Vascular Biology and Therapeutics, Yale University, New Haven, CT 06520, USA. Electronic address: themis.kyriakides@yale.edu. LA - eng GR - GM-072194/GM/NIGMS NIH HHS/United States GR - T32 GM007223/GM/NIGMS NIH HHS/United States GR - T32 HL007950/HL/NHLBI NIH HHS/United States GR - 5T32HL007950-12/HL/NHLBI NIH HHS/United States GR - R01 GM072194/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20140919 PL - England TA - Acta Biomater JT - Acta biomaterialia JID - 101233144 RN - 0 (3-(4-methylphenylsulfonyl)-2-propenenitrile) RN - 0 (Ccl2 protein, mouse) RN - 0 (Chemokine CCL2) RN - 0 (Dimethylpolysiloxanes) RN - 0 (NF-kappa B p50 Subunit) RN - 0 (Nitriles) RN - 0 (Rela protein, mouse) RN - 0 (Sulfones) RN - 0 (Transcription Factor RelA) RN - 0 (cellulose ester plastic) RN - 147257-52-1 (Nfkb1 protein, mouse) RN - 63148-62-9 (baysilon) RN - 9004-34-6 (Cellulose) SB - IM MH - Active Transport, Cell Nucleus/drug effects/genetics MH - Animals MH - Cell Nucleus/genetics/*metabolism/pathology MH - Cellulose/*analogs & derivatives/toxicity MH - Chemokine CCL2/genetics/*metabolism MH - Dimethylpolysiloxanes/*toxicity MH - Foreign-Body Reaction/chemically induced/genetics/*metabolism/pathology MH - Gene Expression Regulation/drug effects MH - Macrophages/*metabolism/pathology MH - Mice MH - Mice, Knockout MH - NF-kappa B p50 Subunit/genetics/*metabolism MH - Nitriles/pharmacology MH - Sulfones/pharmacology MH - Transcription Factor RelA/genetics/*metabolism PMC - PMC4278755 MID - NIHMS629612 OTO - NOTNLM OT - Foreign body giant cell OT - Foreign body response OT - Inflammation OT - Macrophage EDAT- 2014/09/23 06:00 MHDA- 2015/07/30 06:00 PMCR- 2016/01/01 CRDT- 2014/09/23 06:00 PHST- 2014/03/28 00:00 [received] PHST- 2014/08/26 00:00 [revised] PHST- 2014/09/11 00:00 [accepted] PHST- 2014/09/23 06:00 [entrez] PHST- 2014/09/23 06:00 [pubmed] PHST- 2015/07/30 06:00 [medline] PHST- 2016/01/01 00:00 [pmc-release] AID - S1742-7061(14)00405-X [pii] AID - 10.1016/j.actbio.2014.09.022 [doi] PST - ppublish SO - Acta Biomater. 2015 Jan;11:37-47. doi: 10.1016/j.actbio.2014.09.022. Epub 2014 Sep 19.