Antimicrobial peptides from the skin secretions of the South-East Asian frog Hylarana erythraea (Ranidae)

被引:34
作者
Al-Ghaferi, Nadia [1 ]
Kolodziejek, Jolanta [2 ]
Nowotny, Norbert [2 ]
Coquet, Laurent [3 ,4 ]
Jouenne, Thierry [3 ,4 ]
Leprince, Jerome [3 ,5 ]
Vaudry, Hubert [3 ,5 ]
King, Jay. D. [6 ]
Conlon, J. Michael [1 ]
机构
[1] United Arab Emirates Univ, Fac Med & Hlth Sci, Dept Biochem, Al Ain 17666, U Arab Emirates
[2] Univ Vet Med, Dept Pathobiol, Zoonoses & Emerging Infect Grp, A-1210 Vienna, Austria
[3] Univ Rouen, European Inst Peptide Res, F-76821 Mont St Aignan, France
[4] Univ Rouen, CNRS, FRE3101, F-76821 Mont St Aignan, France
[5] Univ Rouen, CNRS, INSERM, U413, F-76821 Mont St Aignan, France
[6] Rare Species Conservatory Fdn, St Louis, MO 63110 USA
关键词
Frog skin; Antimicrobial peptide; Brevinin; Esculentin-2; Temporin; Hylarana; PHYLOGENETIC-RELATIONSHIPS; ACINETOBACTER-BAUMANNII; CYTOLYTIC PEPTIDES; MOLECULAR-CLONING; BROWN FROG; RANA; MITOCHONDRIAL; PURIFICATION; BREVININ-2;
D O I
10.1016/j.peptides.2009.12.013
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
Peptidomic analysis of norepinephrine-stimulated skin secretions of the South-East Asian frog Hylarana erythraea (formerly Rana erythraea partim) has led to the identification of multiple peptides with antimicrobial activity. Structural characterization of the peptides demonstrated that they belong to the brevinin-1 (3), brevinin-2 (2), esculentin-2 (4), and temporin (1) families. The values in parentheses indicate the number of paralogs. In addition, a peptide (GVIKSVLKGVAKTVALG ML.NH2) was isolated that shows some structural similarity to the brevinin-2-related peptides (B2RP) previously isolated from North American frogs of the genus Lithobates. A synthetic replicate of the species B2RP showed broad-spectrum growth inhibitory activity against reference strains of Escherichia coli (MIC = 12.5 mu M), Staphylococcus aureus (MIC = 12.5 mu M) and Candida albicans (MIC = 50 mu M) and was active against multidrug-resistant clinical isolates of Acetinobacter baumannii (MIC in the range 6-12.5 mu M). The hemolytic activity of the peptide was relatively low (LC50 = 280 mu M). Phylogenetic analysis based upon the amino acid sequences of 47 brevinin-2 peptides from 17 Asian species belonging to the family Ranidae provides support for the placement of H. erythraea in the genus Hylarana. (C) 2009 Elsevier Inc. All rights reserved.
引用
收藏
页码:548 / 554
页数:7
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