Tuning the biological activity of cationic anthraquinone analogues specifically toward Staphylococcus aureus
2018
Abstract Development of new antibacterial agents against drug resistant bacteria is an imminent task, especially against methicillin-resistant Staphylococcus aureus (MRSA). While MRSA can still be treated with broad spectrum antibiotics, the use of which often leads to the disruption of normal microbial flora leading to Clostridium difficile infection (CDI). Herein, a new class of antibacterial agent, cationic anthraquinone analogues specifically against MRSA, has been developed. Through the variation and optimization of substituents, these agents are selective toward MRSA, and not Gram negative bacteria which may avoid the problem of CDI. In addition, newly discovered lead compounds also show significantly reduced cytotoxicity against normal mammalian cells than cancerous cells. This interesting finding can alleviate the toxicity and side effect problems often associate with the use of antibiotics.
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