PMID- 11964153 OWN - NLM STAT- MEDLINE DCOM- 20020610 LR - 20190501 IS - 0264-6021 (Print) IS - 1470-8728 (Electronic) IS - 0264-6021 (Linking) VI - 363 IP - Pt 3 DP - 2002 May 1 TI - Stimulation of erythroleukaemia cell differentiation by extracellular high-mobility group-box protein 1 is independent of the receptor for advanced glycation end-products. PG - 529-35 AB - In several cell types the binding of extracellular high-mobility group-box protein 1 (HMGB1) with the receptor for advanced glycation end-products (RAGE) induces cytoskeletal reorganization and cell motility. To establish whether RAGE is also involved in murine erythroleukaemia (MEL) cell differentiation stimulated by HMGB1, we have demonstrated that these cells express a 51 kDa protein identified as RAGE, and then we have produced stable transfectants overexpressing wild-type (wt) RAGE or a dominant negative (dn) RAGE mutant lacking the cytoplasmic domain to analyse the differentiation process in these cells. Several experimental findings indicated that RAGE was not involved in the MEL cell differentiation programme. This was also supported by the identical stimulatory effect exerted by HMGB1 on both wt- or dn-RAGE transfectants. We have also observed that HMGB1 binds a 65 kDa protein on the surface of MEL cells, supporting the hypothesis that alternative targets of HMGB1 are expressed on the MEL cell membrane and may be involved as mediators of its signalling. FAU - Sparatore, Bianca AU - Sparatore B AD - Biochemistry Section, Department of Experimental Medicine, University of Genoa, Viale Benedetto XV, 1-16132 Genoa, Italy. traspar@unige.it FAU - Pedrazzi, Marco AU - Pedrazzi M FAU - Passalacqua, Mario AU - Passalacqua M FAU - Gaggero, Deborah AU - Gaggero D FAU - Patrone, Mauro AU - Patrone M FAU - Pontremoli, Sandro AU - Pontremoli S FAU - Melloni, Edon AU - Melloni E LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Biochem J JT - The Biochemical journal JID - 2984726R RN - 0 (HMGB1 Protein) RN - 0 (Ligands) RN - 0 (Receptor for Advanced Glycation End Products) RN - 0 (Receptors, Immunologic) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 1) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 3) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) SB - IM MH - Animals MH - Cell Differentiation MH - Cell Membrane/metabolism MH - Cytoskeleton/physiology MH - HMGB1 Protein/*metabolism/pharmacology MH - Humans MH - Leukemia, Erythroblastic, Acute/*pathology MH - Ligands MH - Mice MH - Mitogen-Activated Protein Kinase 1/antagonists & inhibitors MH - Mitogen-Activated Protein Kinase 3 MH - Mitogen-Activated Protein Kinases/antagonists & inhibitors MH - Receptor for Advanced Glycation End Products MH - Receptors, Immunologic/drug effects/metabolism MH - Reverse Transcriptase Polymerase Chain Reaction MH - Transfection MH - Tumor Cells, Cultured PMC - PMC1222505 EDAT- 2002/04/20 10:00 MHDA- 2002/06/11 10:01 PMCR- 2002/11/01 CRDT- 2002/04/20 10:00 PHST- 2002/04/20 10:00 [pubmed] PHST- 2002/06/11 10:01 [medline] PHST- 2002/04/20 10:00 [entrez] PHST- 2002/11/01 00:00 [pmc-release] AID - 10.1042/0264-6021:3630529 [doi] PST - ppublish SO - Biochem J. 2002 May 1;363(Pt 3):529-35. doi: 10.1042/0264-6021:3630529.