Bactericidal Kinetics of Marine-Derived Napyradiomycins against Contemporary Methicillin-Resistant Staphylococcus aureus

Marine Drugs

Nina M. Haste¹  Lauge Farnaes²  Varahenage R. Perera³  William Fenical¹  Victor Nizet¹ 

[1] Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA 92093, USA; E-Mails:;Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093, USA; E-Mail:;Department of Pediatrics, University of California, San Diego, La Jolla, CA 92093, USA; E-Mail:

关键词: napyradiomycin;    antibiotic;    antibacterial;    time-kill;    methicillin-resistant Staphylococcus aureus (MRSA);   

DOI  :  10.3390/md9040680

来源: mdpi

【 摘 要 】

There is an urgent need for new antibiotics to treat hospital- and community-associated methicillin-resistant Staphylococcus aureus (MRSA) infections. Previous work has indicated that both terrestrial and marine-derived members of the napyradiomycin class possess potential anti-staphylococcal activities. These compounds are unique meroterpenoids with unusual levels of halogenation. In this paper we report the evaluation of two previously described napyradiomycin derivatives, A80915A (1) and A80915B (2) produced by the marine-derived actinomycete, Streptomyces sp. strain CNQ-525, for their specific activities against contemporary and clinically relevant MRSA. Reported are studies of the in vitro kinetics of these chemical scaffolds in time-kill MRSA assays. Both napyradiomycin derivatives demonstrate potent and rapid bactericidal activity against contemporary MRSA strains. These data may help guide future development and design of analogs of the napyradiomycins that could potentially serve as useful anti-MRSA therapeutics.

【 授权许可】

CC BY   
© 2011 by the authors; licensee MDPI, Basel, Switzerland.