Sanguinarine suppresses cell proliferation, migration and invasion in nasopharyngeal carcinoma inhibiting mTOR signaling.

OBJECTIVE: To confirm the anti-NPC effect of sanguinarine (SA) through a series of wet experiments. METHODS: NPC cell viability was determined by proliferation experiment. Cell clone formation experiment, cell scratch test, transwell migration and invasion experiment and flow cytometry-based cell apoptosis assay were further performed. In addition, Western blotting was performed to investigate the cell signaling pathway. All the relevant experimental data were statistically processed using SPSS 16.0 software. RESULTS: The results showed that sanguinarine represented a time and dose dependent inhibition effects on NPC cell proliferation including the low differentiated CNE2 cells and high metastatic 5-8F cells, along with the cell cloning ability reduction. In addition, sanguinarine has a certain inhibitory effect on the invasion and migration of NPC cells. Mechanistically, sanguinarine displayed the anti-NPC effects mainly involved into the suppression of mTOR signaling and cell apoptosis, which is closely associated with the tumor growth and metastatic malignancy. CONCLUSIONS: Collectively, we discover that sanguinarine is a new high-efficiency anti-NPC monomer of Chinese medicine, with a value for the follow-up pre-clinical research.

Effects of Tianma Xingnao capsule on thrombosis and coagulation system / 中国中药杂志

<p><b>OBJECTIVE</b>This study investigated the thrombolitic effect of Tianma Xinnao capsule and its preliminary mechanism, as well as the effect on coagulation system.</p><p><b>METHOD</b>Charlton's and Tomihisa's methods were modified to investigate the thrombolytic effect of Tianma Xinnao capsule. The activities of type 1 plasminogen activator inhibitor (PAI-1) and tissue-type plasminogen activator (tPA) in rabbit plasma were assayed by use of ELISA. The effects of Tianma Xinnao capsule were also evaluated on euglobulin lysis time (ELT), prothrombin time (PT), kaolin partial thromboplastin time (KPTT), thrombin time (TT), fibrinogen (Fib) and hemorheology.</p><p><b>RESULT</b>The results showed that Tianma Xinnao capsule had a dose-dependent thrombolytic effect in rats. Tianma Xinnao capsule at 0.6 and 1.2 g x kg(-1) produced 40% and 50% of reperfusion rate, while obtained 50% and 40% of reocclusion rate; 0.3 g x kg(-1) of Tianma Xinnao capsule, however, had no effect on the reperfusion or reocclusion rate. Tianma Xinnao capsule significantly inhibited PAI-1 activity, while elevated tPA activity in rabbit plasma. Tianma Xinnao capsule markedly prolonged ELT, PT, and KPTT, and decreased Fib level. Tianma Xinnao capsule showed no significant influence on TT or high, medium, or low sheering viscosity.</p><p><b>CONCLUSION</b>It is indicated that Tianma Xinnao capsule inhibited PAI-1 activity and increased tPA activity, and this property of Tianma Xinnao capsule is assigned to be responsible for the thrombolytic effect.</p>