Proteolytic Degradation of reduced Human Beta Defensin 1 generates a Novel Antibiotic Octapeptide
Proteolytic Degradation of reduced Human Beta Defensin 1 generates a Novel Antibiotic Octapeptide
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还原的人β防御素 1 的蛋白水解降解产生新型抗生素八肽
DOI:
10.1038/s41598-019-40216-2
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发表时间:
2019
影响因子:
4.6
通讯作者:
Wehkamp
中科院分区:
文献类型:
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作者:
Wendler;Schroeder;Ehmann;Koeninger;Mailänder-Sánchez;Lemberg;Wehkamp
Microbial resistance against clinical used antibiotics is on the rise. Accordingly, there is a high demand for new innovative antimicrobial strategies. The host-defense peptide human beta-defensin 1 (hBD-1) is produced continuously by epithelial cells and exhibits compelling antimicrobial activity after reduction of its disulphide bridges. Here we report that proteolysis of reduced hBD-1 by gastrointestinal proteases as well as human duodenal secretions produces an eight-amino acid carboxy-terminal fragment. The generated octapeptide retains antibiotic activity, yet with distinct characteristics differing from the full-length peptide. We modified the octapeptide by stabilizing its termini and by using non-natural D-amino acids. The native and modified peptide variants showed antibiotic activity against pathogenic as well as antibiotic-resistant microorganisms, includingE.coli,P.aeruginosaandC.albicans. Moreover, in anin vitro C.albicansinfection model the tested peptides demonstrated effective amelioration ofC.albicansinfection without showing cytotoxity on human cells. In summary, protease degradation of hBD-1 provides a yet unknown mechanism to broaden antimicrobial host defense, which could be used to develop defensin-derived therapeutic applications.
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影响因子:
64.8
作者:
Schroeder, Bjoern O.;Wu, Zhihong;Wehkamp, Jan
通讯作者:
Wehkamp, Jan
DOI:
10.1073/pnas.0905745107
发表时间:
2010-05-11
影响因子:
11.1
作者:
Peyrin-Biroulet, Laurent;Beisner, Julia;Chamaillard, Mathias
通讯作者:
Chamaillard, Mathias
影响因子:
12.2
作者:
Schroeder, Bjoern O.;Stange, Eduard F.;Wehkamp, Jan
通讯作者:
Wehkamp, Jan
影响因子:
2.2
作者:
Nuding, S;Fellermann, K;Stange, EF
通讯作者:
Stange, EF
影响因子:
8
作者:
通讯作者:
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