An ultrasensitive microfluidic approach reveals correlations between the physico-chemical and biological activity of experimental peptide antibiotics
An ultrasensitive microfluidic approach reveals correlations between the physico-chemical and biological activity of experimental peptide antibiotics
复制标题
超灵敏微流体方法揭示了实验肽抗生素的物理化学和生物活性之间的相关性
DOI:
10.1101/2021.09.08.459503
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Cama J
中科院分区:
文献类型:
--
作者:
Cama J
Antimicrobial resistance challenges the ability of modern medicine to contain infections. Given the dire need for new antimicrobials, polypeptide antibiotics hold particular promise. These agents hit multiple targets in bacteria starting with their most exposed regions—their membranes. However, suitable approaches to quantify the efficacy of polypeptide antibiotics at the membrane and cellular level have been lacking. Here, we employ two complementary microfluidic platforms to probe the structure–activity relationships of two experimental series of polypeptide antibiotics. We reveal strong correlations between each peptide’s physicochemical activity at the membrane level and biological activity at the cellular level. We achieve this knowledge by assaying the membranolytic activities of the compounds on hundreds of individual giant lipid vesicles, and by quantifying phenotypic responses within clonal bacterial populations with single-cell resolution. Our strategy proved capable of detecting differential responses for peptides with single amino acid substitutions between them, and can accelerate the rational design and development of peptide antimicrobials.
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影响因子:
5.3
作者:
Cama J;Leszczynski R;Tang PK;Khalid A;Lok V;Dowson CG;Ebata A
通讯作者:
Ebata A
影响因子:
4.8
作者:
G. Klein;B. Lindner;H. Brade;S. Raina
通讯作者:
S. Raina
影响因子:
3.2
作者:
Al Nahas K;Keyser UF
通讯作者:
Keyser UF
影响因子:
2.9
作者:
Huang, HW
通讯作者:
Huang, HW
DOI:
--
发表时间:
2020
期刊:
Ideas of Quantum Chemistry
影响因子:
--
作者:
S. Luthra;K. Salhiyyah;G. Dritsakis;K. Thorne;E. Dixon;S. Ohri;R. Holt
通讯作者:
R. Holt