PMID- 17182592 OWN - NLM STAT- MEDLINE DCOM- 20070306 LR - 20190516 IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 178 IP - 1 DP - 2007 Jan 1 TI - Dendritic cell transmigration through brain microvessel endothelium is regulated by MIP-1alpha chemokine and matrix metalloproteinases. PG - 520-9 AB - Dendritic cells (DCs) accumulate in the CNS during inflammatory diseases, but the exact mechanism regulating their traffic into the CNS remains to be defined. We now report that MIP-1alpha increases the transmigration of bone marrow-derived, GFP-labeled DCs across brain microvessel endothelial cell monolayers. Furthermore, occludin, an important element of endothelial tight junctions, is reorganized when DCs migrate across brain capillary endothelial cell monolayers without causing significant changes in the barrier integrity as measured by transendothelial electrical resistance. We show that DCs produce matrix metalloproteinases (MMP) -2 and -9 and GM6001, an MMP inhibitor, decreases both baseline and MIP-1alpha-induced DC transmigration. These observations suggest that DC transmigration across brain endothelial cell monolayers is partly MMP dependent. The migrated DCs express higher levels of CD40, CD80, and CD86 costimulatory molecules and induce T cell proliferation, indicating that the transmigration of DCs across brain endothelial cell monolayers contributes to the maintenance of DC Ag-presenting function. The MMP dependence of DC migration across brain endothelial cell monolayers raises the possibility that MMP blockers may decrease the initiation of T cell recruitment and neuroinflammation in the CNS. FAU - Zozulya, Alla L AU - Zozulya AL AD - Department of Pathology, University of Wisconsin-Madison, Madison, WI 53706, USA. FAU - Reinke, Emily AU - Reinke E FAU - Baiu, Dana C AU - Baiu DC FAU - Karman, Jozsef AU - Karman J FAU - Sandor, Matyas AU - Sandor M FAU - Fabry, Zsuzsanna AU - Fabry Z LA - eng GR - R01-NS 37570-01A2/NS/NINDS NIH HHS/United States GR - R01 NS037570-07/NS/NINDS NIH HHS/United States GR - R01 NS037570-06/NS/NINDS NIH HHS/United States GR - R01 NS037570-05A1/NS/NINDS NIH HHS/United States GR - R01 NS037570/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Chemokine CCL3) RN - 0 (Chemokine CCL4) RN - 0 (Chemokines) RN - 0 (Enzyme Inhibitors) RN - 0 (Macrophage Inflammatory Proteins) RN - 0 (Matrix Metalloproteinase Inhibitors) RN - 0 (Membrane Proteins) RN - 0 (Occludin) RN - 0 (Ocln protein, mouse) RN - 147336-22-9 (Green Fluorescent Proteins) RN - EC 3.4.24.- (Matrix Metalloproteinases) RN - EC 3.4.24.24 (Matrix Metalloproteinase 2) RN - EC 3.4.24.35 (Matrix Metalloproteinase 9) SB - IM MH - Animals MH - Brain/*blood supply MH - CD8-Positive T-Lymphocytes/immunology MH - Cell Movement/immunology MH - Chemokine CCL3 MH - Chemokine CCL4 MH - Chemokines/pharmacology/physiology MH - Dendritic Cells/drug effects/enzymology/*immunology MH - Endothelium, Vascular/*immunology/ultrastructure MH - Enzyme Inhibitors/pharmacology MH - Female MH - Green Fluorescent Proteins/analysis/genetics MH - Lymphocyte Activation MH - Macrophage Inflammatory Proteins/pharmacology/*physiology MH - Matrix Metalloproteinase 2/physiology MH - Matrix Metalloproteinase 9/physiology MH - Matrix Metalloproteinase Inhibitors MH - Matrix Metalloproteinases/*physiology MH - Membrane Proteins/analysis/metabolism MH - Mice MH - Mice, Transgenic MH - Occludin MH - Tight Junctions/chemistry/ultrastructure PMC - PMC1950722 MID - NIHMS25561 EDAT- 2006/12/22 09:00 MHDA- 2007/03/07 09:00 PMCR- 2008/01/01 CRDT- 2006/12/22 09:00 PHST- 2006/12/22 09:00 [pubmed] PHST- 2007/03/07 09:00 [medline] PHST- 2006/12/22 09:00 [entrez] PHST- 2008/01/01 00:00 [pmc-release] AID - 178/1/520 [pii] AID - 10.4049/jimmunol.178.1.520 [doi] PST - ppublish SO - J Immunol. 2007 Jan 1;178(1):520-9. doi: 10.4049/jimmunol.178.1.520.