Subtle differences between human and rabbit neutrophil receptors shown by the secretagogue activity of constrained formyl peptides

被引:8
作者
Dentino, AR
Raj, PA
DeNardin, E
机构
[1] SUNY BUFFALO,DEPT ORAL BIOL,BUFFALO,NY 14214
[2] MARQUETTE UNIV,DIV PERIODONT,SCH DENT,MILWAUKEE,WI 53201
关键词
chemotactic peptides; constrained peptides; peptide conformation; neutrophil degranulation;
D O I
10.1006/abbi.1996.9791
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Stereochemically constrained extended beta-antiparallel and folded beta-turn analogs of the chemotactic agent N-formyl-Met-Leu-Phe-OH were tested for their ability to induce the release of beta-glucuronidase from human and rabbit neutrophils. Selected biologically active peptides were further examined for their capacity to inhibit the binding of f-Met-Leu-[H-3]Phe to whole human neutrophils at 4 degrees C. The results suggest that Dpg(2) analogs with the extended backbone are significantly more potent in human peripheral blood neutrophils than the folded beta-turn analogs. Surprisingly, in rabbit peritoneal neutrophils, the extended Dpg(2) analog appears to be marginally less active than the flexible parent peptide and the folded Ac(6)c(2) analog. In human neutrophils, the secretagogue activity increases in the following order with alteration in the C-terminal functions: -CONH2 < -COOMe < -COOH much less than -COOBzl. However, this order of potency differs from that observed for the rabbit formyl peptide receptor (-COOH < -COOMe < -CONH2 much less than -COOBzl). In human neutrophils, the peptides' ability to compete for the receptor binding site of f-Met-Leu-[H-3]Phe correlates well with their secretagogue potency. The results provide convincing evidence for the existence of subtle differences between human peripheral blood neutrophils and rabbit peritoneal neutrophils with regard to ligand-receptor interactions of constrained chemotactic peptides. What is new and novel in this report is that constrained peptides can distinguish between the rabbit and human chemotactic peptide receptors which have so far been believed to have similar response to secretagogue agents. The data emphasize that directly relating the secretagogue activity observed in rabbit neutrophils to that observed in human neutrophils may not be unequivocal. (C) 1997 Academic Press
引用
收藏
页码:267 / 274
页数:8
相关论文
共 48 条
[21]  
JEFFS PW, 1984, INT J PEPT PROT RES, V24, P442
[22]   CHARACTERISTICS OF BINDING OF A POTENT CHEMOTACTIC FORMYL TETRAPEPTIDE, FORMYLMETHIONYL-LEUCYL-PHENYLALANYL-PHENYLALANINE, TO THE RECEPTORS ON RABBIT NEUTROPHILS [J].
KERMODE, JC ;
MUTHUKUMARASWAMY, N ;
FREER, RJ .
JOURNAL OF LEUKOCYTE BIOLOGY, 1988, 43 (05) :420-428
[23]   A NEW METHOD FOR SYNTHESIS OF PEPTIDES - ACTIVATION OF CARBOXYL GROUP WITH DICYCLOHEXYLCARBODIIMIDE USING 1-HYDROXYBENZOTRIAZOLES AS ADDITIVES [J].
KONIG, W ;
GEIGER, R .
CHEMISCHE BERICHTE-RECUEIL, 1970, 103 (03) :788-&
[24]  
MARASCO WA, 1984, J BIOL CHEM, V259, P5430
[25]  
MICHEL AG, 1990, INT J PEPT PROT RES, V36, P489
[26]  
MURPHY PM, 1994, ANNU REV IMMUNOL, V12, P593, DOI 10.1146/annurev.iy.12.040194.003113
[27]   CLONING OF COMPLEMENTARY-DNA ENCODING A FUNCTIONAL HUMAN INTERLEUKIN-8 RECEPTOR [J].
MURPHY, PM ;
TIFFANY, HL .
SCIENCE, 1991, 253 (5025) :1280-1283
[28]  
NIEDEL J, 1979, J BIOL CHEM, V254, P700
[29]   TEMPERATURE DEPENDENCE OF AMIDE PROTON CHEMICAL SHIFTS - SECONDARY STRUCTURES OF GRAMICIDIN S AND VALINOMYCIN [J].
OHNISHI, M ;
URRY, DW .
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 1969, 36 (02) :194-&
[30]  
PEREZ HD, 1993, J BIOL CHEM, V268, P2292