Network Pharmacology-Based Elucidation Of The Regulatory Mechanism Of Solanum Lyratum (Bai Ying) Against Psoriasis Via The IL-17A/STAT3 Axis: Molecular Docking And HaCaT Cell Validation

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BACKGROUND: Psoriasis affects approximately 2% of the global population, with the IL-17A-STAT3 pathway mediating abnormal keratinocyte proliferation and inflammatory amplification. Solanum lyratum (Bai Ying) has long been used for skin disorders, and its steroidal alkaloids have anti-inflammatory potential, though the mechanisms remain unclear. OBJECTIVE: To elucidate the molecular basis and cytological efficacy of S. lyratum steroidal alkaloids in exerting anti-psoriatic effects via the IL-17A/STAT3 axis. METHODS: HPLC-MS-QTOF, network pharmacology, molecular simulation, and a HaCaT cell model with STAT3-siRNA assays were employed. RESULTS: Eighteen components were identified; steroidal alkaloids showed high affinity for STAT3 and IL17RA. S. lyratum (5-40 μg/mL) enhanced cell viability, inhibited p-STAT3 (IC50 = 14.30 μg/mL), and attenuated inflammatory responses and keratinocyte proliferation. CONCLUSION: S. lyratum steroidal alkaloids exert dual-targeted blocking effects on the IL-17A/STAT3 axis, supporting it as a potential therapeutic candidate for psoriasis.

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