Penicillenols from a deep-sea fungus Aspergillus restrictus inhibit Candida albicans biofilm formation and hyphal growth
Wang, J.; Yao, Q-Feng.; Amin, M.; Nong, X-Hua.; Zhang, X-Yong.; Qi, S-Hua.
Journal of Antibiotics 70(6): 763-770
2017
ISSN/ISBN: 1881-1469
PMID: 28377634
DOI: 10.1038/ja.2017.45
Accession: 070809129
Penicillenols (Al, A2, Bl, B2, Cl and C2) were isolated from Aspergillus restrictus DFFSCS006, and could differentially inhibit biofilm formation and eradicate pre-developed biofilms of Candida albicans. Their structure bioactivity relationships suggested that the saturation of hydrocarbon chain at C-8, R-configuration of C-5 and trans-configuration of the double bond between C-5 and C-6 of pyrrolidine-2,4-dione unit were important for their anti-biofilm activities. Penicillenols A2 and B1 slowed the hyphal growth and suppressed the transcripts of hypha specific genes HWP1, ALS1, ALS3, ECE1 and SAP4. Moreover, penicillenols A2 and B1 were found to act synergistically with amphotericin B against C. albicans biofilm formation.