Marine fungus aspergillus chevalieri TM2-S6 extract protects skin fibroblasts from oxidative stress

Sophia Letsiou, Artemis Bakea, Géraldine Le Goff, Philippe Lopes, Konstantinos Gardikis, Michal Weis, Yehuda Benayahu, Jamal Ouazzani

Research output: Contribution to journalArticlepeer-review


The strain Aspergillus chevalieri TM2-S6 was isolated from the sponge Axinella and identified according to internal transcribed spacer (ITS) molecular sequence homology with Aspergillus species from the section Restricti. The strain was cultivated 9 days on potato dextrose broth (PDB), and the medium evaluated as antioxidant on primary normal human dermal fibroblasts (NHDF). The cultivation broth was submitted to sterile filtration, lyophilized and used without any further processing to give the Aspergillus chevalieri TM2-S6 cultivation broth ingredient named ACBB. ACCB contains two main compounds: tetrahydroauroglaucin and flavoglaucin. Under oxidative stress, ACCB showed a significant promotion of cell viability. To elucidate the mechanism of action, the impact on a panel of hundreds of genes involved in fibroblast physiology was evaluated. Thus, ACCB stimulates cell proliferation (VEGFA, TGFB3), antioxidant response (GPX1, SOD1, NRF2), and extracellular matrix organization (COL1A1, COL3A1, CD44, MMP14). ACCD also reduced aging (SIRT1, SIRT2, FOXO3). These findings indicate that Aspergillus chevalieri TM2-S6 cultivation broth exhibits significant in vitro skin protection of human fibroblasts under oxidative stress, making it a potential cosmetic ingredient.

Original languageEnglish
Article number460
JournalMarine Drugs
Issue number9
StatePublished - Sep 2020


  • Aspergillus chevalieri
  • Fibroblast protection
  • Marine cosmetic ingredient
  • Marine fungi
  • Oxidative stress


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