Multiple Mechanisms of the Synthesized Antimicrobial Peptide TS against Gram-Negative Bacteria for High Efficacy Antibacterial Action In Vivo.

Multiple Mechanisms of the Synthesized Antimicrobial Peptide TS against Gram-Negative Bacteria for High Efficacy Antibacterial Action In Vivo.
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合成抗菌肽TS对革兰氏阴性菌高效体内抗菌作用的多重机制

DOI:
10.3390/molecules26010060
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发表时间:
2020-12-24
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Wu G
Wu G
中科院分区:
其他
文献类型:
--
作者:
Zhang R;Fan X;Jiang X;Zou M;Xiao H;Wu G

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耐药细菌的出现强调了对新型抗生素的迫切需求。抗菌肽TS在体内外均表现出广泛的抗菌活性,尤其对革兰氏阴性菌的抗菌活性更强,但其抗菌机制尚不清楚。在这里,我们发现,TS没有溶血活性破坏的完整性,通过取代二价阳离子和竞争性结合脂多糖的外细菌细胞膜。此外,抗菌肽TS对大肠杆菌有抑制和杀灭作用。通过与细菌DNA相互作用从内部分解细菌,因此,抗菌肽TS的多重抗菌机制可能不易诱导细菌耐药性,提示其作为抗菌药物在将来用于对抗细菌感染。
The emergence of drug-resistant bacteria emphasizes the urgent need for novel antibiotics. The antimicrobial peptide TS shows extensive antibacterial activity in vitro and in vivo, especially in gram-negative bacteria; however, its antibacterial mechanism is unclear. Here, we find that TS without hemolytic activity disrupts the integrity of the outer bacterial cell membrane by displacing divalent cations and competitively binding lipopolysaccharides. In addition, the antimicrobial peptide TS can inhibit and kill E. coli by disintegrating the bacteria from within by interacting with bacterial DNA. Thus, antimicrobial peptide TS’s multiple antibacterial mechanisms may not easily induce bacterial resistance, suggesting use as an antibacterial drug to be for combating bacterial infections in the future.
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发表时间: 2003-11-01
期刊: PEPTIDES
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