Skin-Related Effects of Corynebacterium amycolatum SB-1 Ferment Filtrate and Functional Characterization of Ellagic Acid

A recent investigation explored the potential skin benefits of a byproduct from Corynebacterium amycolatum SB-1, specifically focusing on ellagic acid. Prior studies have suggested a connection between this bacterial genus and healthy skin, yet research into its direct impact on skin cells has been scarce. To better understand this, the researchers cultured eight Corynebacterium strains from female participants' facial skin and introduced the supernatants of each strain to three skin cell line cultures: Hs68, HaCaT, and B16-F10.

They subsequently examined changes in gene expression levels (ELN, COL1A1, IL-1{beta}, and HAS3) and examined the ability of these cultures to reduce melanin formation.

Corynebacterium amycolatum SB-1 was chosen as the focus for further analysis due to its quick growth and high yield. Employing liquid chromatography-tandem mass spectrometry (LC-TOF/MS), they identified ellagic acid as a promising polyphenolic antioxidant with the potential to combat hyperpigmentation and promote skin health. To confirm the effectiveness of ellagic acid, the team measured FLG gene expression and its inhibition on melanin biosynthesis.

Additionally, they conducted RNA sequencing to uncover the molecular mechanisms behind ellagic acid's actions, finding that it effectively inhibits melanogenesis and encourages collagen production.

In summary, this study demonstrates that ellagic acid, derived from Corynebacterium amycolatum SB-1, holds significant potential as a bioactive compound for enhancing skin health, particularly in reducing signs of hyperpigmentation and age-related skin deterioration.