Camellia Sinensis Seed Flavonoids Attenuate UVB-Induced Inflammation and UVA-Induced Photodamage via MAPK/NF-κB and AP-1 Pathways
March 2026
in “
Molecules
”
Camellia sinensis seed flavonoids UVB-induced inflammation UVA-induced photodamage MAPK pathway NF-κB pathway AP-1 pathway reactive oxygen species p38/JNK pathway iNOS COX-2 keratinocytes Caspase-3 barrier proteins fibroblasts collagen hyaluronic acid TGF-β/Smad pathway anti-inflammatory barrier-repair anti-photoaging green tea seed flavonoids skin inflammation skin photodamage ROS skin barrier proteins skin collagen skin hyaluronic acid skin anti-aging
Studysummary In this laboratory study, researchers reported that Camellia sinensis seed flavonoids significantly reduced oxidative stress and inflammation in UV-irradiated skin cells by modulating key signaling pathways, highlighting its potential as a skincare ingredient for anti-inflammatory and anti-photoaging benefits.
Our plain-language summary. Not medical advice or a treatment recommendation. Consult a qualified healthcare professional before changing treatment. Full disclaimer
This study demonstrates that Camellia sinensis seed flavonoids (CSF) offer protective effects against UVB-induced inflammation and UVA-induced photodamage in skin cells. CSF effectively reduces oxidative stress and inflammation in keratinocytes by scavenging reactive oxygen species and inhibiting the MAPK/NF-κB pathway, while enhancing skin barrier proteins. In fibroblasts, CSF mitigates photoaging by inhibiting AP-1/MMP-driven matrix degradation and promoting TGF-β/Smad-dependent extracellular matrix synthesis. These findings highlight CSF's potential as a natural skincare ingredient for photodamage protection, although further studies using more complex models are necessary for validation. The experiments were conducted with a sample size of 3 for each condition.
