CHRNA7 and non-small cell lung carcinoma: The therapeutic effect of S. baicalensis and its compounds against NSCLC cells induced by nicotine as an activator of α7nAChR are attributed to its ability to inhibit proliferation, invasion, migration, metastasis and angiogenesis, as well as inducing apoptosis, cell cycle arrest and autophagy via inhibiting signaling pathways involved in NSCLC development.