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Screening of Anti-Biofilm Compounds from Marine-Derived Fungi and the Effects of Secalonic Acid D on Staphylococcus aureus Biofilm
Wang, J; Nong, XH; Zhang, XY; Xu, XY; Amin, M; Qi, SH; shuhuaqi@scsio.ac.cn
2017
Source PublicationJOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY
Volume27Issue:6Pages:1078-1089
AbstractBiofilm formation of Staphylococcus aureus is one of its mechanisms of drug resistance. Anti-biofilm screening of 106 compounds from marine-derived fungi displayed that 12 compounds inhibited S. aureus biofilm formation by > 50% at the concentration of 100 mu g/ml, and only secalonic acid D (SAD) and B inhibited by > 90% at 6.25 mu g/ml without inhibiting cell growth after 24-h incubation. Meanwhile, it was found that the double bond between C-1 and C-10 of citrinin derivatives and the C-C connection position of two chromone monomers may be important for their anti-biofilm activities. Moreover, SAD slightly facilitated biofilm eradication and influenced its architecture. Furthermore, SAD slowed the cell growth rate in the preceding 18-h incubation and differentially regulated transcriptional expression of several genes, such as agr, isaA, icaA, and icaD, associated with biofilm formation in planktonic and biofilm cells, which may be the reason for the anti-biofilm activity of SAD. Finally, SAD acted synergistically against S. aureus growth and biofilm formation with other antibiotics. These findings indicated that various natural products from marine-derived fungi, such as SAD, could be used as a potential biofilm inhibitor against S. aureus.
Department[Wang, Jie; Nong, Xu-Hua; Zhang, Xiao-Yong; Xu, Xin-Ya; Amin, Muhammad; Qi, Shu-Hua] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangdong Key Lab Marine Mat Med,RNAM Ctr Marine, Guangzhou 510301, Guangdong, Peoples R China; [Qi, Shu-Hua] South China Sea Bioresource Exploitat & Utilizat, Guangzhou 510301, Guangdong, Peoples R China
KeywordAnti-biofilm Activity Staphylococcus Aureus Marine Natural Product Secalonic Acid d Mechanism Of Action
Funding ProjectLMB
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/16296
Collection中科院海洋生物资源可持续利用重点实验室
Corresponding Authorshuhuaqi@scsio.ac.cn
Recommended Citation
GB/T 7714
Wang, J,Nong, XH,Zhang, XY,et al. Screening of Anti-Biofilm Compounds from Marine-Derived Fungi and the Effects of Secalonic Acid D on Staphylococcus aureus Biofilm[J]. JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY,2017,27(6):1078-1089.
APA Wang, J.,Nong, XH.,Zhang, XY.,Xu, XY.,Amin, M.,...&shuhuaqi@scsio.ac.cn.(2017).Screening of Anti-Biofilm Compounds from Marine-Derived Fungi and the Effects of Secalonic Acid D on Staphylococcus aureus Biofilm.JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY,27(6),1078-1089.
MLA Wang, J,et al."Screening of Anti-Biofilm Compounds from Marine-Derived Fungi and the Effects of Secalonic Acid D on Staphylococcus aureus Biofilm".JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY 27.6(2017):1078-1089.
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