title: Design and characterization of novel hybrid peptides from LFB15(W4,10), HP(2-20), and cecropin A based on structure parameters by computer-aided method.
abstract: The increasing problem of antibiotic resistance among pathogenic bacteria requires development of new antimicrobial agents. The pivotal assets of the antimicrobial peptide include potential for rapid bactericidal activity and low propensity for resistance. The four new antimicrobial hybrid peptides were designed based on peptides LFB15(W4,10), HP(2-20), and cecropin A according to the structure-activity relationship of the amphipathic and cationic antimicrobial peptides. Their structural parameters were accessed by bioinformatics tools, and then two hybrids with the most potential candidates were synthesized. The hybrid peptide LH28 caused an increase in antibiotic activity (MIC(50)=1.56-3.13 microM) against given bacterial strains and did not cause obvious hemolysis of rabbit erythrocytes at concentration of 3.13 microM with effective antimicrobial activity. The results demonstrate that evaluating the structural parameters could be useful for designing novel antimicrobial peptides.
authors.affiliation: Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing, 100081, People's Republic of China.
authors.forename: Zi-gang
authors.initials: ZG
authors.lastname: Tian
authors.forename: Tian-tang
authors.initials: TT
authors.lastname: Dong
authors.forename: Da
authors.initials: D
authors.lastname: Teng
authors.forename: Ya-lin
authors.initials: YL
authors.lastname: Yang
authors.forename: Jian-hua
authors.initials: JH
authors.lastname: Wang
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology* / Q000633:toxicity; D023181:Antimicrobial Cationic Peptides / Q000737:chemistry / Q000235:genetics* / Q000494:pharmacology* / Q000633:toxicity; D001419:Bacteria / Q000187:drug effects*; D015198:Designer Drugs / Q000737:chemistry / Q000494:pharmacology* / Q000633:toxicity; D015195:Drug Design; D004912:Erythrocytes / Q000187:drug effects; D005658:Fungi / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D011817:Rabbits; D011994:Recombinant Proteins / Q000235:genetics / Q000494:pharmacology / Q000633:toxicity
chemical_list: D000900:Anti-Bacterial Agents; D023181:Antimicrobial Cationic Peptides; D015198:Designer Drugs; D011994:Recombinant Proteins; C031161:cecropin A