Membrane-Active Cyclic Amphiphilic Peptides: Broad-Spectrum Antibacterial Activity Alone and in Combination with Antibiotics.

Membrane-Active Cyclic Amphiphilic Peptides: Broad-Spectrum Antibacterial Activity Alone and in Combination with Antibiotics.
复制标题

DOI:
10.1021/acs.jmedchem.2c01469
复制
发表时间:
2022-12-08
影响因子:
7.3
通讯作者:
Parang K
Parang K
中科院分区:
医学1区
文献类型:
--
作者:
Mohammed EHM;Lohan S;Ghaffari T;Gupta S;Tiwari RK;Parang K

文献摘要

参考文献

被引文献

相似文献

我们设计了一个包含精氨酸(R)和色氨酸(W)残基的24种环肽文库,这些残基按顺序排列为[RnWn](n = 2 - 7),以研究亲水性/疏水性比例、电荷和环的大小对革兰氏阳性和革兰氏阴性菌株抗菌活性的影响。在这些肽中,5a和6a表现出最高的抗菌活性。与11种市售抗生素联合使用时,5a和6a对大量耐药病原体显示出显著的协同作用。溶血作用(半数溶血浓度HC50 = 340μg/mL)以及针对哺乳动物细胞的细胞活力表明,5a对细菌具有选择性致死作用,而对哺乳动物细胞无害。钙黄绿素染料泄漏和扫描电子显微镜研究揭示了5a的膜溶解作用。此外,在人血浆中的稳定性(半衰期t1/2 = 3小时)以及病原体产生耐药性的能力可忽略不计,进一步反映了5a作为一种基于肽的抗生素进一步开发的潜力。
We designed a library of 24 cyclic peptides containing arginine (R) and tryptophan (W) residues in a sequential manner [RnWn] (n = 2–7) to study the impact of the hydrophilic/hydrophobic ratio, charge, and ring size on the antibacterial activity against Gram-positive and Gram-negative strains. Among peptides, 5a and 6a demonstrated the highest antimicrobial activity. In combination with 11 commercially available antibiotics, 5a and 6a showed remarkable synergism against a large panel of resistant pathogens. Hemolysis (HC50 = 340 μg/mL) and cell viability against mammalian cells demonstrated the selective lethal action of 5a against bacteria over mammalian cells. Calcein dye leakage and scanning electron microscopy studies revealed the membranolytic effect of 5a. Moreover, the stability in human plasma (t1/2 = 3 h) and the negligible ability of pathogens to develop resistance further reflect the potential of 5a for further development as a peptide-based antibiotic.
DOI: 10.1080/14787210.2020.1705155
发表时间: 2020-01-02
影响因子: 5.7
作者:
Coates, Anthony R. M.;Hu, Yanmin;Yeh, Pamela
通讯作者: Yeh, Pamela
DOI: 10.1021/bi00165a020
发表时间: 1992-12-22
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
BLONDELLE, SE;HOUGHTEN, RA
通讯作者: HOUGHTEN, RA
DOI: 10.3389/fmicb.2013.00353
发表时间: 2013-12-09
影响因子: 5.2
作者:
Guilhelmelli F;Vilela N;Albuquerque P;Derengowski Lda S;Silva-Pereira I;Kyaw CM
通讯作者: Kyaw CM
DOI: 10.5114/aoms.2016.59838
发表时间: 2016-12-01
期刊: Archives of medical science : AMS
影响因子: --
作者:
Tatarkiewicz J;Staniszewska A;Bujalska-Zadrożny M
通讯作者: Bujalska-Zadrożny M
DOI: 10.3390/antibiotics11081082
发表时间: 2022-08-09
期刊: Antibiotics (Basel, Switzerland)
影响因子: --
作者:
通讯作者: --