PMID- 23354080 OWN - NLM STAT- MEDLINE DCOM- 20130716 LR - 20231213 IS - 1791-2423 (Electronic) IS - 1019-6439 (Linking) VI - 42 IP - 3 DP - 2013 Mar TI - AKT serine/threonine protein kinase modulates baicalin-triggered autophagy in human bladder cancer T24 cells. PG - 993-1000 LID - 10.3892/ijo.2013.1791 [doi] AB - Baicalin is one of the major compounds in the traditional Chinese medicinal herb from Scutellaria baicalensis Georgi. We investigated the molecular mechanisms of cell autophagy induced by baicalin in human bladder cancer T24 cells. Baicalin inhibited cell survival as shown by MTT assay and increased cell death by trypan blue exclusion assay in a concentration-dependent manner. Baicalin did not induce apoptotic cell death in T24 cells by TUNEL and caspase-3 activity assay. Baicalin induced the acidic vesicular organelle cell autophagy marker, manifested by acridine orange (AO) and monodansylcadaverine (MDC) staining and cleavage of microtubule-associated protein 1 light chain 3 (LC3). The protein expression levels of the Atg 5, Atg 7, Atg 12, Beclin-1 and LC3-II were upregulated in T24 cells after baicalin treatment. Inhibition of autophagy by 3-methyl-adenine (an inhibitor of class III phosphatidylinositol-3 kinase; 3-MA) reduced the cleavage of LC3 in T24 cells after baicalin treatment. Furthermore, protein expression levels of phospho-AKT (Ser473) and enzyme activity of AKT were downregulated in T24 cells after baicalin treatment. In conclusion, baicalin triggered cell autophagy through the AKT signaling pathway in T24 cells. FAU - Lin, Chingju AU - Lin C AD - Department of Physiology, China Medical University, Taichung 404, Taiwan, R.O.C. FAU - Tsai, Shih-Chang AU - Tsai SC FAU - Tseng, Michael T AU - Tseng MT FAU - Peng, Shu-Fen AU - Peng SF FAU - Kuo, Sheng-Chu AU - Kuo SC FAU - Lin, Meng-Wei AU - Lin MW FAU - Hsu, Yuan-Man AU - Hsu YM FAU - Lee, Miau-Rong AU - Lee MR FAU - Amagaya, Sakae AU - Amagaya S FAU - Huang, Wen-Wen AU - Huang WW FAU - Wu, Tian-Shung AU - Wu TS FAU - Yang, Jai-Sing AU - Yang JS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130123 PL - Greece TA - Int J Oncol JT - International journal of oncology JID - 9306042 RN - 0 (ATG12 protein, human) RN - 0 (ATG5 protein, human) RN - 0 (Apoptosis Regulatory Proteins) RN - 0 (Autophagy-Related Protein 12) RN - 0 (Autophagy-Related Protein 5) RN - 0 (BECN1 protein, human) RN - 0 (Beclin-1) RN - 0 (Enzyme Inhibitors) RN - 0 (Flavonoids) RN - 0 (MAP1LC3A protein, human) RN - 0 (Membrane Proteins) RN - 0 (Microtubule-Associated Proteins) RN - 0 (Phosphoinositide-3 Kinase Inhibitors) RN - 0 (Small Ubiquitin-Related Modifier Proteins) RN - 347Q89U4M5 (baicalin) RN - 5142-23-4 (3-methyladenine) RN - EC 2.3.2.13 (Transglutaminases) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 3.4.22.- (Caspase 3) RN - EC 6.2.1.45 (ATG7 protein, human) RN - EC 6.2.1.45 (Autophagy-Related Protein 7) RN - EC 6.2.1.45 (Ubiquitin-Activating Enzymes) RN - F30N4O6XVV (Acridine Orange) RN - I9N81SC5HD (monodansylcadaverine) RN - JAC85A2161 (Adenine) RN - L90BEN6OLL (Cadaverine) SB - IM MH - Acridine Orange MH - Adenine/analogs & derivatives/pharmacology MH - Apoptosis Regulatory Proteins/biosynthesis MH - Autophagy/*drug effects MH - Autophagy-Related Protein 12 MH - Autophagy-Related Protein 5 MH - Autophagy-Related Protein 7 MH - Beclin-1 MH - Cadaverine/analogs & derivatives MH - Caspase 3 MH - Cell Line, Tumor MH - Cell Survival/drug effects MH - Enzyme Inhibitors/*pharmacology MH - Flavonoids/*pharmacology MH - Humans MH - Medicine, Chinese Traditional MH - Membrane Proteins/biosynthesis MH - Microtubule-Associated Proteins/biosynthesis/metabolism MH - Phosphoinositide-3 Kinase Inhibitors MH - Proto-Oncogene Proteins c-akt/biosynthesis/*metabolism MH - Signal Transduction/drug effects MH - Small Ubiquitin-Related Modifier Proteins/biosynthesis MH - Transglutaminases/antagonists & inhibitors MH - Ubiquitin-Activating Enzymes/biosynthesis MH - Urinary Bladder Neoplasms/*drug therapy EDAT- 2013/01/29 06:00 MHDA- 2013/07/17 06:00 CRDT- 2013/01/29 06:00 PHST- 2012/11/08 00:00 [received] PHST- 2012/12/28 00:00 [accepted] PHST- 2013/01/29 06:00 [entrez] PHST- 2013/01/29 06:00 [pubmed] PHST- 2013/07/17 06:00 [medline] AID - 10.3892/ijo.2013.1791 [doi] PST - ppublish SO - Int J Oncol. 2013 Mar;42(3):993-1000. doi: 10.3892/ijo.2013.1791. Epub 2013 Jan 23.