PMID- 11412312 OWN - NLM STAT- MEDLINE DCOM- 20010719 LR - 20240413 IS - 0019-2805 (Print) IS - 1365-2567 (Electronic) IS - 0019-2805 (Linking) VI - 103 IP - 2 DP - 2001 Jun TI - The pan-chemokine inhibitor NR58-3.14.3 abolishes tumour necrosis factor-alpha accumulation and leucocyte recruitment induced by lipopolysaccharide in vivo. PG - 244-54 AB - Chemokines participate in the regulation of leucocyte recruitment in a wide variety of inflammatory processes, including host defence and diseases such as asthma, atherosclerosis and autoimmune disorders. We have previously described the properties of Peptide 3, the first broad-specificity chemokine inhibitor in vitro. Here, we report the properties of NR58-3.14.3, a retroinverso analogue of Peptide 3. NR58-3.14.3 inhibited leucocyte migration induced by a range of chemokines, including monocyte chemoattractant protein-1 (MCP-1) (2.5 nM), macrophage inflammatory protein-1alpha (MIP-1alpha) (5 nM), regulated on activation, normal T-cell expressed and presumably secreted (RANTES) (20 nM), stromal cell-derived factor-1alpha (SDF-1alpha) (25 nM) and interleukin-8 (IL-8) (30 nM), but did not affect migration induced by N-formyl-methionyl-leucyl-phenylalanine (FMLP) or complement C5a (> 100 microM). NR58-3.14.3 is therefore approximately 1000-fold more potent than Peptide 3 but retains the broad-spectrum chemokine inhibitory activity of the parent peptide. In vivo, pretreatment with a systemic dose of 10 mg of NR58-3.14.3, but not the inactive derivative NR58-3.14.4, abolished leucocyte recruitment in response to intradermal injection of 500 ng of MCP-1 into rat skin. This suggests that NR58-3.14.3 is a functional chemokine inhibitor in vivo as well as in vitro. We utilized NR58-3.14.3 as a tool to investigate the role of chemokine activity during leucocyte recruitment in response to lipopolysaccharide (LPS) in vivo. NR58-3.14.3, but not NR58-3.14.4, abolished leucocyte recruitment in response to intradermal injection of 50 ng of LPS into rat skin. Furthermore, NR58-3.14.3 completely inhibited LPS-induced accumulation of tumour necrosis factor-alpha (TNF-alpha). This data is consistent with a model in which multiple chemokines act in parallel upstream of TNF-alpha. NR58-3.14.3 is therefore a powerful anti-inflammatory agent in vivo, suppressing proinflammatory cytokine production and leucocyte recruitment in response to endotoxin stimulus in rat skin. FAU - Reckless, J AU - Reckless J AD - Department of Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge, UK. jr219@mole.bio.cam.ac.uk FAU - Tatalick, L M AU - Tatalick LM FAU - Grainger, D J AU - Grainger DJ LA - eng PT - Journal Article PL - England TA - Immunology JT - Immunology JID - 0374672 RN - 0 (Chemokine CCL2) RN - 0 (Chemokines) RN - 0 (Lipopolysaccharides) RN - 0 (Peptides, Cyclic) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (cyclo(cysteinyl-glutaminyl-isoleucyl-tryptophyl-lysyl-glutaminyl-lysyl-prolyl-aspartyl-leucyl-cysteinyl-amide)) SB - IM MH - Animals MH - Chemokine CCL2/antagonists & inhibitors/immunology MH - Chemokines/antagonists & inhibitors MH - Dermatitis/immunology/*prevention & control MH - Drug Design MH - Female MH - Humans MH - Leukocytes/*immunology MH - Lipopolysaccharides/*antagonists & inhibitors/immunology MH - Peptides, Cyclic/chemistry/*pharmacology MH - Rats MH - Rats, Sprague-Dawley MH - Stereoisomerism MH - Tumor Cells, Cultured MH - Tumor Necrosis Factor-alpha/*immunology PMC - PMC1783230 EDAT- 2001/06/20 10:00 MHDA- 2001/07/20 10:01 PMCR- 2002/06/01 CRDT- 2001/06/20 10:00 PHST- 2001/06/20 10:00 [pubmed] PHST- 2001/07/20 10:01 [medline] PHST- 2001/06/20 10:00 [entrez] PHST- 2002/06/01 00:00 [pmc-release] AID - imm1228 [pii] AID - 10.1046/j.1365-2567.2001.01228.x [doi] PST - ppublish SO - Immunology. 2001 Jun;103(2):244-54. doi: 10.1046/j.1365-2567.2001.01228.x.