title: Exploring the antibacterial and hemolytic activity of shorter- and longer-chain beta-, alpha,beta-, and gamma-peptides, and of beta-peptides from beta2-3-aza- and beta3-2-methylidene-amino acids bearing proteinogenic side chains--a survey.
abstract: The antibacterial activities of 31 different beta-, mixed alpha/beta-, and gamma-peptides, as well as of beta-peptides derived from beta2-3-aza- and beta3-2-methylidene-amino acids were assayed against six pathogens (Enterococcus faecalis, Staphylococcus aureus, Streptococcus pneumoniae, Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa), and the results were compared with literature data. The interaction of these peptides with mammalian cells, as modeled by measuring the hemolysis of human erythrocytes, was also investigated. In addition to those peptides designed to fold into amphiphilic helical conformations with positive charges on one face of the helix, one new peptide with hemolytic activity was detected within the sample set. Moreover, it was demonstrated that neither cationic peptides used for membrane translocation (beta3-oligoarginines), nor mixed alpha/beta- or gamma-peptides with somatostatin-mimicking activities display unwanted hemolytic activity.
authors.affiliation: Uppsala University, Institute of Chemistry, Department of Organic Chemistry, Box 599, SE-75124 Uppsala.
authors.forename: Per I
authors.initials: PI
authors.lastname: Arvidsson
authors.forename: Neil S
authors.initials: NS
authors.lastname: Ryder
authors.forename: H Markus
authors.initials: HM
authors.lastname: Weiss
authors.forename: David F
authors.initials: DF
authors.lastname: Hook
authors.forename: Jaime
authors.initials: J
authors.lastname: Escalante
authors.forename: Dieter
authors.initials: D
authors.lastname: Seebach
mesh_terms: D000596:Amino Acids / Q000737:chemistry*; D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology*; D001419:Bacteria / Q000145:classification / Q000187:drug effects; D004912:Erythrocytes / Q000187:drug effects; D006461:Hemolysis / Q000187:drug effects*; D006801:Humans; D008826:Microbial Sensitivity Tests; D010455:Peptides / Q000737:chemistry / Q000494:pharmacology*; D013045:Species Specificity
chemical_list: D000596:Amino Acids; D000900:Anti-Bacterial Agents; D010455:Peptides