Berberine (B1), berberrubine (B2), 9-O-isoprenylberberrubine bromide (B3), 9-O-gernylberberrubine bromide (B4), and 9-O-farnesylberberrubine bromide (B5) were synthesized and provided by Dr. Jin-Yi Wu [7 (link)]. Dimethyl sulfoxide (DMSO), propidium iodide, crystal violet, chloroquine, rapamycin, 3-methyladenine (3-MA), paclitaxel (Taxol), and transforming growth factor beta (TGF-β) were purchased from Sigma-Aldrich (St. Louis, MO, USA). Primary antibodies such as phospho-CDK2 (2351-1; Epitomics; Burlingame, CA, USA), CDK4 (sc-601; Santa Cruz Biotechnology; Dallas, TX, USA), p27 (GTX100446; GeneTex; Irvine, CA, USA), caspase-3 (#9662; Cell Signaling Technology; Beverly, MA, USA), PARP (#9542; Cell Signaling Technology), GAPDH (GTX100118; GeneTex), LC3 (AP1802a; Abgent; San Diego, CA, USA), p62 (#5114; Cell Signaling Technology), N-cadherin (#4061; Cell Signaling Technology), E-cadherin (610182; BD Biosciences; Bedford, MA, USA), claudin-1 (#4933; Cell Signaling Technology), and snail (#3879; Cell Signaling Technology) as well as secondary antibodies such as rabbit antimouse antibody (GTX26728; GeneTex) and goat antirabbit antibodies (GTX213110; GeneTex) were purchased and used in this study. All chemicals and biochemicals used in this study were of analytical grade.
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