Role of Hypotaurine in Protection against UVA-Induced Damage in Keratinocytes

Alessia Baseggio Conrado (Lead / Corresponding author), Sergio Fanelli, Victoria McGuire, Sally Ibbotson

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)
51 Downloads (Pure)


Photoageing and skin cancer are major causes of morbidity and are a high cost to society. Interest in the development of photoprotective agents for inclusion in topical cosmetic and sunscreen products is profound. Recently, amino acids with a sulfinic group, notably hypotaurine, have been included as ingredients in cosmetic preparations. However, the mechanism of action of hypotaurine as a possible anti-aging agent is unknown, despite its use as a free radical scavenger. To address this issue, we investigated hypotaurine uptake in a human keratinocyte model and examined its effect on UVR-induced cytotoxicity. Hypotaurine was taken up by keratinocytes in a time- and concentration-dependent manner, with levels remaining significantly above baseline 48 h after washout. A cytoprotective effect of pre-incubation with 2.5–5 mMhypotaurine was shown as indicated by increased cell viability when keratinocytes were irradiated with UVA at 5 or 10 Jcm -2, with the level of hypotaurine also significantly reduced. These findings indicate a potential cytoprotective effect of hypotaurine against the deleterious effects of UVA irradiation. This provides support for further studies to evaluate the potential photoprotective benefits of hypotaurine supplementation of topical cosmetic and sunscreen products.

Original languageEnglish
Pages (from-to)353-359
Number of pages7
JournalPhotochemistry and Photobiology
Issue number2
Early online date21 Sept 2020
Publication statusPublished - Mar 2021

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry


Dive into the research topics of 'Role of Hypotaurine in Protection against UVA-Induced Damage in Keratinocytes'. Together they form a unique fingerprint.

Cite this