研究领域：皮肤科 免疫学 药理学

关键字：RL-QN15 OH-CATH30 痤疮 痤疮丙酸杆菌 炎症 TLR2 NF-κB 细胞因子 胶原沉积 小鼠 RAW 264.7 细胞

Acne is a prevalent and chronic inflammatory skin disease, and its treatment remains a huge clinical challenge. In the present study, we evaluated the therapeutic potential of combining the peptides RL-QN15 and OH-CATH30 for the treatment of acne in mice. Results indicated that the topical application of RL-QN15 and OH-CATH30 significantly inhibited the proliferation of Propionibacterium acnes (P. acnes) and alleviated acne-induced edema. Furthermore, the combined treatment suppressed the overexpression of proinflammatory cytokines induced by P. acnes , including interleukin -1 beta (IL-1β), interleukin -6 (IL-6), interleukin -8 (IL-8), tumor necrosis factor-alpha (TNF-α) induced by P. acnes and facilitated collagen deposition, thereby effectively mitigating skin damage associated with acne. Mechanistically, the combination of RL-QN15 and OH-CATH30 inhibited the expression of toll-like receptor 2 (TLR2) and activation nuclear factor kappa-B (NF-κB) signaling pathway (phosphorylation of P65 and IκB) in both mice and RAW 264.7 cells. These results suggested that this combination may inhibit the excretion of inflammatory factors and facilitated the collagen deposition by TLR2/NF-κB signaling. Overall, our study demonstrates the potent therapeutic effects of the combined application of RL-QN15 and OH-CATH30, highlights the TLR2/NF-κB pathway as a key target in acne treatment, and provides a novel strategy for developing innovative acne therapeutics.