Rutin Protects Fibroblasts from UVA Radiation through Stimulation of Nrf2 Pathway
Elisabetta Tabolacci1,2, Giuseppe Tringali2,3, Veronica Nobile1,2
1Dipartimento di Sanità Pubblica e Scienze della Vita, Sezione di Medicina Genomica, Università Cattolica del Sacro Cuore, Largo F. Vito 1, 00168 Rome, Italy.
Antioxidants (Basel, Switzerland)
|April 28, 2023
Summary
Rutin, a plant bioflavonoid, protects skin cells from UVA damage by reducing oxidative stress and promoting cell survival. It activates the Nrf2 pathway, enhancing antioxidant defenses and preventing cell death.
Area of Science:
- Biochemistry
- Dermatology
- Cell Biology
Background:
- Ultraviolet A (UVA) radiation causes significant skin damage through oxidative stress.
- Bioflavonoids, like rutin, are plant-derived compounds with potential antioxidant properties.
- Understanding the molecular mechanisms of photoprotection is crucial for developing effective skincare strategies.
Purpose of the Study:
- To investigate the photoprotective effects of rutin against UVA-induced damage in human skin fibroblasts.
- To elucidate the molecular pathways involved in rutin's protective action.
- To assess rutin's impact on cell viability, oxidative stress, and apoptosis.
Main Methods:
- Human skin fibroblasts were exposed to UVA radiation.
- Rutin treatment was administered to assess its protective effects.
- Cell viability, reactive oxygen species (ROS) levels, and Nrf2 pathway activation were measured.
- Mitochondrial function and apoptosis-related markers (Bcl2/Bax ratio) were analyzed.
Main Results:
- Rutin significantly increased cell viability following UVA exposure.
- Rutin reduced UVA-induced reactive oxygen species (ROS) generation.
- Rutin modulated the Nrf2 transcriptional pathway, increasing reduced glutathione levels.
- Rutin promoted a higher Bcl2/Bax ratio, indicating an anti-apoptotic effect and protected mitochondrial function.
Conclusions:
- Rutin exhibits significant photoprotective effects against UVA-induced skin damage.
- Rutin's mechanism involves the activation of the Nrf2 signaling pathway, leading to enhanced antioxidant capacity.
- Rutin confers cytoprotection through an anti-apoptotic effect, preserving mitochondrial function and cell viability.
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