PMID- 18628255 OWN - NLM STAT- MEDLINE DCOM- 20081216 LR - 20220310 IS - 0008-6363 (Print) IS - 0008-6363 (Linking) VI - 80 IP - 2 DP - 2008 Nov 1 TI - P55 tumour necrosis factor receptor in bone marrow-derived cells promotes atherosclerosis development in low-density lipoprotein receptor knock-out mice. PG - 309-18 LID - 10.1093/cvr/cvn193 [doi] AB - AIMS: Tumour necrosis factor (TNF) is a pivotal pro-inflammatory cytokine with a clear pathogenic role in many chronic inflammatory diseases, and p55 TNF receptor (TNFR) mediates the majority of TNF responses. The aim of the current study was to investigate the role of p55 TNFR expression in bone marrow-derived cells, in atherosclerotic lesion development. METHODS AND RESULTS: Irradiated low-density lipoprotein receptor knock-out mice were reconstituted with either p55 TNFR knock-out or control haematopoietic stem cells to generate chimeras deficient or wild-type for p55 TNFR specifically in bone marrow-derived cells, including macrophages. Upon high fat feeding, p55 TNFR knock-out transplanted mice developed smaller atherosclerotic lesions. These lesions were characterized by the presence of smaller foam cells and a reduced macrophage foam cell area. They did not differ in other compositional characteristics as determined by quantification of inflammatory T-cell and neutrophil influx, apoptotic and necrotic cell death, and collagen content. In vitro studies confirmed a significant defect in modified lipoprotein endocytosis by p55 TNFR knock-out macrophages due to reduced scavenger receptor class A expression. Interestingly, plasma cytokine/chemokine profile analysis indicated that monocyte chemoattractant protein-1 (MCP-1) levels, a major chemokine involved in atherogenesis, were consistently and significantly lower in p55 TNFR knock-out transplanted mice compared with controls, before and after high fat feeding. CONCLUSION: p55 TNFR expression in bone marrow-derived cells contributes to the development of atherosclerosis by enhancing lesional foam cell formation and by promoting the expression of pro-atherosclerotic chemokines such as MCP-1. FAU - Xanthoulea, Sofia AU - Xanthoulea S AD - Department of Molecular Genetics, Cardiovascular Research Institute Maastricht, Maastricht University, Universiteitssingel 50, UNS 50/11, 6229ER Maastricht, The Netherlands. s.xanthoulea@gen.unimaas.nl FAU - Gijbels, Marion J J AU - Gijbels MJ FAU - van der Made, Ingeborg AU - van der Made I FAU - Mujcic, Hilda AU - Mujcic H FAU - Thelen, Melanie AU - Thelen M FAU - Vergouwe, Monique N AU - Vergouwe MN FAU - Ambagts, Matheus H C AU - Ambagts MH FAU - Hofker, Marten H AU - Hofker MH FAU - de Winther, Menno P J AU - de Winther MP LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080715 PL - England TA - Cardiovasc Res JT - Cardiovascular research JID - 0077427 RN - 0 (Ccl2 protein, mouse) RN - 0 (Chemokine CCL2) RN - 0 (Inflammation Mediators) RN - 0 (Interleukin-6) RN - 0 (Receptors, LDL) RN - 0 (Receptors, Tumor Necrosis Factor, Type I) RN - 0 (Scavenger Receptors, Class A) RN - 0 (Tnfrsf1a protein, mouse) SB - IM MH - Animals MH - Atherosclerosis/immunology/*metabolism/pathology MH - Bone Marrow Cells/immunology/*metabolism MH - *Bone Marrow Transplantation MH - Chemokine CCL2/blood MH - Disease Models, Animal MH - Endocytosis MH - Foam Cells/immunology/*metabolism/pathology MH - Inflammation Mediators/blood MH - Interleukin-6/metabolism MH - Lipid Metabolism MH - Liver/metabolism/pathology MH - Mice MH - Mice, Inbred C57BL MH - Receptors, LDL/*deficiency/genetics MH - Receptors, Tumor Necrosis Factor, Type I/deficiency/genetics/*metabolism MH - Scavenger Receptors, Class A/metabolism MH - Time Factors EDAT- 2008/07/17 09:00 MHDA- 2008/12/17 09:00 CRDT- 2008/07/17 09:00 PHST- 2008/07/17 09:00 [pubmed] PHST- 2008/12/17 09:00 [medline] PHST- 2008/07/17 09:00 [entrez] AID - cvn193 [pii] AID - 10.1093/cvr/cvn193 [doi] PST - ppublish SO - Cardiovasc Res. 2008 Nov 1;80(2):309-18. doi: 10.1093/cvr/cvn193. Epub 2008 Jul 15.