The rapid growth of antibiotic resistance in Staphylococcus aureus coupled with their biofilm forming ability has made the infections difficult to treat with conventional antibiotics.
金黄色葡萄球菌对抗生素的快速耐药性增长,加上其生物膜形成能力,使得这些感染难以用传统抗生素治疗。
Alkyl-Aryl-Vancomycins: Multimodal Glycopeptides with Weak Dependence on the Bacterial Metabolic State
作者:Paramita Sarkar、Debajyoti Basak、Riya Mukherjee、Julia E. Bandow、Jayanta Haldar
DOI:10.1021/acs.jmedchem.1c00449
日期:2021.7.22
such as vancomycin for Gram-positive bacterial infections necessitates the development of new therapeutics. Furthermore, the ability of bacteria to survive antibiotic therapy through formation of biofilms and persister cells complicates treatment. Toward this, we report alkyl-aryl-vancomycins (AAVs), with high potency against vancomycin-resistant enterococci and staphylococci. Unlike vancomycin, the lead
Amphiphilic molecules linked by an aromatic nucleus were developed that showed high selectivity toward bacteria over mammalian cells, and lowdrugresistance. A promising compound 4g exhibited strong bactericidal activity against a panel of sensitive and resistant bacteria, low toxicity, the ability to reduce cell viability in biofilms, stability in mammalian fluids, rapid killing of pathogens, and
Amide Moieties Modulate the Antimicrobial Activities of Conjugated Oligoelectrolytes against Gram‐negative Bacteria
作者:Jakkarin Limwongyut、Alex S. Moreland、Chenyao Nie、Javier Read de Alaniz、Guillermo C. Bazan
DOI:10.1002/open.202100260
日期:2022.2
Distyrylbenzene-based conjugatedoligoelectrolytes were designed as a framework for antimicrobial agents. It is shown that hydrogen bond forming moieties can modulate membrane-active properties of the compounds and increase interactions with bacteria. In addition, they facilitate cytoplasmic membrane permeabilization of Gram-negative bacteria. This work highlights the importance of hydrogen bonds in
antibacterial effect against clinical methicillin-resistantStaphylococcusaureus (MRSA) isolates (MICs: 1–2 μg/mL) but also had the advantages of rapid bactericidal properties, low toxicity, good plasma stability, and not readily inducing bacterial resistance. Mechanistic studies indicated that IV15 has good membrane-targeting ability and can bind to phosphatidylglycerol and cardiolipin in bacterial membranes