Short, Lipidated Dendrimeric gamma-AApeptides as New Antimicrobial Peptidomimetics
International Journal of Molecular Sciences(2023)
Abstract
Antibiotic resistance is one of the most significant issues encountered in global health. There is an urgent demand for the development of a new generation of antibiotic agents combating the emergence of drug resistance. In this article, we reported the design of lipidated dendrimeric ?-AApeptides as a new class of antimicrobial agents. These AApeptides showed excellent potency and broad-spectrum activity against both Gram-positive bacteria and Gram-negative bacteria, including methicillin-resistant Staphylococcus aureus (MRSA). The mechanistic studies revealed that the dendrimeric AApeptides could kill bacteria rapidly through the permeabilization of bacterial membranes, analogous to host-defense peptides (HDPs). These dendrimers also did not induce antibiotic resistance readily. The easy access to the synthesis, together with their potent and broad-spectrum activity, make these lipidated dendrimeric ?-AApeptides a new generation of antibacterial agents.
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Key words
dendrimeric gamma-AApeptides,broad spectrum activity,antibiotic resistance
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