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The Structure-Activity Relationship of Pterostilbene Against Candida albicans Biofilms.


ABSTRACT: Candida albicans biofilms contribute to invasive infections and dramatic drug resistance, and anti-biofilm agents are urgently needed in the clinic. Pterostilbene (PTE) is a natural plant product with potentials to be developed as an anti-biofilm agent. In this study, we evaluated the structure-activity relationship (SAR) of PTE analogues against C. albicans biofilms. XTT (Sodium 2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide inner salt) reduction assay was used to evaluate the activity of the analogues against C. albicans biofilms. Knowing that hyphal formation is essential for C. albicans biofilms, anti-hyphal assay was further carried out. By comparing a series of compounds tested in this study, we found that compounds with para-hydroxy (-OH) in partition A exhibited better activity than those with other substituents in the para position, and the double bond in partition B and meta-dimethoxy (-OCH?) in partition C both contributed to the best activity. Consistent results were obtained by anti-hyphal assay. Collectively, para-hydroxy (-OH), double bond and meta-dimethoxy (-OCH?) are all needed for the best activity of PTE against C. albicans biofilms.

SUBMITTER: Hu DD 

PROVIDER: S-EPMC6155180 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature

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The Structure-Activity Relationship of Pterostilbene Against Candida albicans Biofilms.

Hu Dan-Dan DD   Zhang Ri-Li RL   Zou Yong Y   Zhong Hua H   Zhang En-Sheng ES   Luo Xiang X   Wang Yan Y   Jiang Yuan-Ying YY  

Molecules (Basel, Switzerland) 20170227 3


<i>Candida albicans</i> biofilms contribute to invasive infections and dramatic drug resistance, and anti-biofilm agents are urgently needed in the clinic. Pterostilbene (PTE) is a natural plant product with potentials to be developed as an anti-biofilm agent. In this study, we evaluated the structure-activity relationship (SAR) of PTE analogues against <i>C. albicans</i> biofilms. XTT (Sodium 2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-2<i>H</i>-tetrazolium-5-carboxanilide inner salt) reduction as  ...[more]

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