Antimicrobial activity of Bac7 fragments against drug-resistant clinical isolates

被引:88
作者
Benincasa, M
Scocchi, M
Podda, E
Skerlavaj, B
Dolzani, L
Gennaro, R
机构
[1] Univ Trieste, Dept Biochem Biophys & Macromol Chem, I-34127 Trieste, Italy
[2] Univ Udine, Dept Sci & Med Technol, I-33100 Udine, Italy
[3] Univ Trieste, Dept Biomed Sci, I-34127 Trieste, Italy
关键词
pro-rich peptide; Bactenecin; 7; cathelicidin peptide; synthetic analog; antimicrobial activity; clinical isolate; multidrug-resistance;
D O I
10.1016/j.peptides.2004.08.004
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
Ten peptides from 13 to 35 residues in length and covering the whole sequence of the Pro-rich peptide Bac7 were synthesized to identify the domain responsible for its antimicrobial activity. At least 16 residues of the highly cationic N-terminal sequence were required to maintain the activity against Gram-negative bacteria. The fragments Bac7(1-35) mid. to a lesser extent. Bac7(1-16) proved active against a panel of antibiotic-resistant clinical isolates of Gram-negative bacteria. with the notable exception of Burkholderia cepacia. In addition. when tested against fungi. the longer fragment was also active against collection strains and clinical isolates of Cryptococcus neoformans. but not towards clinical isolates of Candida albicans. (C) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码:2055 / 2061
页数:7
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