Targeting Vascular and Inflammatory Crosstalk: Cannabigerol as a Dual-Pathway Modulator in Rosacea.

Rosacea is a chronic inflammatory skin condition characterized by persistent erythema and abnormal vascular response. Although current treatments focus on symptomatic relief, they often provide only temporary improvement and may be associated with side effects or recurrence. Cannabigerol (CBG), a non-psychoactive cannabinoid, has recently garnered attention for its pharmacological activities, including anti-inflammatory, antioxidant, neuroprotective, and skin barrier-supportive effects. However, its role in modulating pathological responses in rosacea remains unclear. In this study, we investigated the therapeutic potential of topically applied CBG in an LL-37-induced rosacea-like mouse model. Clinical and histological assessments revealed that CBG markedly reduced erythema, epidermal hyperplasia, and mast cell infiltration. Quantitative reverse transcription polymerase chain reaction (qRT-PCR) showed downregulation of Il1b, Il4, Il6, Il13, Il22, Il31, Tlr2, Vegfa, and Mmp9. Immunohistochemistry and Western blot analyses further demonstrated suppression of CD31, vascular endothelial growth factor (VEGF), and Yes-associated protein (YAP) and transcriptional coactivator with PDZ-binding motif (TAZ), along with reduced activation of the Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathway, including decreased levels of JAK1, STAT3, and phosphorylated STAT3. These findings suggest that topical CBG alleviates rosacea-like skin inflammation by targeting inflammatory and vascular pathways, including JAK/STAT and YAP/TAZ signaling.