PMID- 10359667 OWN - NLM STAT- MEDLINE DCOM- 19990802 LR - 20181113 IS - 0264-6021 (Print) IS - 1470-8728 (Electronic) IS - 0264-6021 (Linking) VI - 340 ( Pt 3) IP - Pt 3 DP - 1999 Jun 15 TI - Identification of oligopeptide sequences which inhibit migration induced by a wide range of chemokines. PG - 803-11 AB - We have identified an amino acid sequence, termed peptide 3, corresponding to amino acids 51-62 of the mature human monocyte chemoattractant protein-1 (MCP-1), which inhibits human mononuclear-cell and THP-1-cell migration induced by a wide range of chemokines. For example, peptide 3 inhibited MCP-1-induced THP-1 migration in a transwell assay with an ED50 of approx. 8 microM. Peptide 3 binds directly to THP-1 cells with an association constant of approx. 10 microM, and is therefore likely to be a direct receptor antagonist for CC and CXC chemokine receptors. By performing a structure-function analysis of this peptide, we have identified a sequence variant that shows an approx. 3-4-fold greater potency as an inhibitor of chemokine-induced migration [Leu4Ile11 peptide 3 (1-12)]. Furthermore, unlike peptide 3, which binds to the Duffy antigen receptor for chemokines on human erythrocytes with a similar affinity to the specific chemokine receptors on THP-1 cells, the Leu4Ile11 peptide 3 (1-12) sequence variant shows at least 20-fold greater selectivity for the specific receptors. Derivatives of Leu4Ile11 peptide 3 (1-12) are therefore the best candidates among the molecules we have investigated for use as a chemokine inhibitor in vivo. FAU - Reckless, J AU - Reckless J AD - Department of Medicine, University of Cambridge, Addenbrookes Hospital, Box 157, Hills Road, Cambridge CB2 2QQ, UK. jr219@mole.bio.cam.ac.uk FAU - Grainger, D J AU - Grainger DJ LA - eng GR - Wellcome Trust/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Biochem J JT - The Biochemical journal JID - 2984726R RN - 0 (Antigens, Protozoan) RN - 0 (Carrier Proteins) RN - 0 (Chemokine CCL2) RN - 0 (Chemokines) RN - 0 (Duffy antigen binding protein, Plasmodium) RN - 0 (Oligopeptides) RN - 0 (Peptide Fragments) RN - 0 (Protozoan Proteins) RN - 0 (Receptors, Cell Surface) RN - 0 (Receptors, Chemokine) RN - 0 (Transforming Growth Factor beta) SB - IM MH - Adult MH - Amino Acid Sequence MH - Animals MH - *Antigens, Protozoan MH - Carrier Proteins/metabolism MH - Cells, Cultured MH - Chemokine CCL2/antagonists & inhibitors/chemistry/metabolism/pharmacology MH - Chemokines/*antagonists & inhibitors/chemistry/metabolism/pharmacology MH - Chemotaxis, Leukocyte/*drug effects MH - Conserved Sequence/genetics MH - Dose-Response Relationship, Drug MH - Erythrocytes/cytology/metabolism MH - Female MH - Humans MH - Leukocytes, Mononuclear/cytology/drug effects/metabolism MH - Male MH - Mice MH - Molecular Sequence Data MH - Oligopeptides/chemistry/genetics/metabolism/*pharmacology MH - Peptide Fragments/antagonists & inhibitors/chemistry/metabolism/pharmacology MH - *Protozoan Proteins MH - Receptors, Cell Surface/metabolism MH - Receptors, Chemokine/antagonists & inhibitors/metabolism/physiology MH - Sequence Alignment MH - Structure-Activity Relationship MH - Transforming Growth Factor beta/pharmacology PMC - PMC1220314 EDAT- 1999/06/09 00:00 MHDA- 1999/06/09 00:01 PMCR- 1999/12/15 CRDT- 1999/06/09 00:00 PHST- 1999/06/09 00:00 [pubmed] PHST- 1999/06/09 00:01 [medline] PHST- 1999/06/09 00:00 [entrez] PHST- 1999/12/15 00:00 [pmc-release] PST - ppublish SO - Biochem J. 1999 Jun 15;340 ( Pt 3)(Pt 3):803-11.