3.13. Effects of the Introduction of WT-GSK-3β, KD-GSK-3β, and pLXSN on Sensitivity of MCF-7 Breast Cancer Cells to Tideglusib in Combination with Low Doses of Chemotherapeutic, Anti-Diabetes Drugs, and the Nutraceutical Berberine. This evidence concerns the gene GSK3B and breast cancer.