PMID- 11983693 OWN - NLM STAT- MEDLINE DCOM- 20020822 LR - 20210206 IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 277 IP - 30 DP - 2002 Jul 26 TI - Opposite regulation of type II and III receptors for immunoglobulin G in mouse glomerular mesangial cells and in the induction of anti-glomerular basement membrane (GBM) nephritis. PG - 27535-44 AB - We examined the capacity of mouse glomerular mesangial cells (MC) to express and function through two different low affinity FcgammaRs, the activating FcgammaRIII and the inhibitory FcgammaRII. Immunohistochemistry identified FcgammaRII as the prominent FcgammaR in the kidney, and low levels of FcgammaRIIb2-specific mRNA were also detected in primary cultures of growth-arrested MC. Activation by tumor necrosis factor-alpha/interleukin-1beta induced substantial FcgammaRII expression in proliferating MC. Importantly, however, stimulation with interferon-gamma (IFN-gamma)/lipopolysaccharide or IFN-gamma alone resulted in a complete down-regulation of FcgammaRII, which was accompanied by a strong increase in FcRgamma chain mRNA and a surface appearance of FcgammaRIII. Activating FcgammaRIII triggered mRNA synthesis for monocyte chemoattractant protein-1 (MCP-1), MCP-5, cytokine-induced neutrophil chemoattractant, and RANTES, whereas FcgammaRIII-deficient MC failed to respond to immune complex (IC) activation as shown by impaired production of MCP-1 mRNA/protein. In a passive model of acute anti-glomerular basement membrane (GBM) nephritis, induction of FcgammaRIII and suppression of FcgammaRII occurred in kidney tissues. Blockade of FcgammaRII, when induced selectively in the kidney, resulted in enhanced inflammation. Taken together, our results define a novel regulatory pathway with opposite regulation of FcgammaRII (suppressed) and FcgammaRIII (induced) by IFN-gamma on MCs in vitro and anti-GBM IgG in vivo. Herein is provided the first evidence that glomerular FcgammaRII plays an important immunoregulatory role in the initiation of IC glomerulonephritis. FAU - Radeke, Heinfried H AU - Radeke HH AD - Department of Clinical Immunology and Institute of Pharmacology, Medical School of Hannover, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany. FAU - Janssen-Graalfs, Iska AU - Janssen-Graalfs I FAU - Sowa, Eveline N AU - Sowa EN FAU - Chouchakova, Nelli AU - Chouchakova N FAU - Skokowa, Julia AU - Skokowa J FAU - Loscher, Fabian AU - Loscher F FAU - Schmidt, Reinhold E AU - Schmidt RE FAU - Heeringa, Peter AU - Heeringa P FAU - Gessner, J Engelbert AU - Gessner JE LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20020430 PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 0 (Antibodies, Monoclonal) RN - 0 (Chemokine CCL2) RN - 0 (RNA, Messenger) RN - 0 (Receptors, IgG) RN - 63231-63-0 (RNA) RN - EC 3.1.- (Ribonucleases) SB - IM MH - Animals MH - Antibodies, Monoclonal/metabolism MH - Biotinylation MH - Blotting, Southern MH - Cells, Cultured MH - Chemokine CCL2/metabolism MH - Down-Regulation MH - Enzyme-Linked Immunosorbent Assay MH - Flow Cytometry MH - *Gene Expression Regulation MH - Glomerular Mesangium/*immunology/metabolism MH - Immunohistochemistry MH - Kidney/metabolism MH - Mice MH - Mice, Inbred C57BL MH - Nephritis/metabolism MH - Neutrophils MH - RNA/metabolism MH - RNA, Messenger/metabolism MH - Receptors, IgG/*chemistry MH - Reverse Transcriptase Polymerase Chain Reaction MH - Ribonucleases/metabolism EDAT- 2002/05/02 10:00 MHDA- 2002/08/23 10:01 CRDT- 2002/05/02 10:00 PHST- 2002/05/02 10:00 [pubmed] PHST- 2002/08/23 10:01 [medline] PHST- 2002/05/02 10:00 [entrez] AID - S0021-9258(18)60106-1 [pii] AID - 10.1074/jbc.M200419200 [doi] PST - ppublish SO - J Biol Chem. 2002 Jul 26;277(30):27535-44. doi: 10.1074/jbc.M200419200. Epub 2002 Apr 30.