| Tanshinone IIA inhibits leukemia THP-1 cell growth by induction of apoptosis. | |
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MedLine Citation:
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PMID: 19288011 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Tanshinone IIA, a diterpene quinone extracted from the traditional herbal medicine, Salvia miltiorrhiza Bunge, has been reported to have anti-tumor effects on a large variety of cancer cells. The present study was undertaken to investigate the in vitro antiproliferation and apoptosis inducing effects of Tanshinone IIA on leukemia THP-1 cell lines and its mechanisms of action. MTT assay was used to detect the cell growth inhibitory rate; cell apoptotic rate and the mitochondrial membrane potential (Deltapsim) were investigated by flow cytometry (FCM), apoptotic morphology was observed by Hoechst 33258 staining and DNA fragmentation analysis. The expression of caspase-3 and different apoptosis modulators were analyzed by Western blotting. The results revealed that Tanshinone IIA inhibited the growth of THP-1 cells and caused significant apoptosis, the suppression was both in time- and dose-dependent manner. After treatment by Tanshinone IIA for 48 h, the percentage of disruption of Deltapsim gradually increased in a dose-dependent manner along with marked changes of cell apoptosis. Western blotting showed cleavage of the caspase-3 zymogen protein (32-kDa) with the appearance of its 20-kDa subunit and a dose-dependent cleavage of PARP, with the appearance of 89-kDa fragment; The expression of Bcl-2 and survivin was down-regulated remarkably while Bax expression was up-regulated concurrently after the cells were treated with Tanshinone IIA for 48 h. We therefore conclude that Tanshinone IIA has significant growth inhibition effects on THP-1 cells by induction of apoptosis, and that Tanshinone IIA-induced apoptosis on THP-1 cells is mainly related to the disruption of Deltapsim and activation of caspase-3 as well as down-regulation of anti-apoptotic protein Bcl-2, survivin and up-regulation of pro-apoptotic protein Bax. The results indicate that Tanshinone IIA may serve as a potential anti-leukemia reagent. |
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Authors:
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Jia-Jun Liu; Yong Zhang; Dong-Jun Lin; Ruo-Zhi Xiao |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Oncology reports Volume: 21 ISSN: 1021-335X ISO Abbreviation: Oncol. Rep. Publication Date: 2009 Apr |
Date Detail:
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Created Date: 2009-03-16 Completed Date: 2009-06-18 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9422756 Medline TA: Oncol Rep Country: Greece |
Other Details:
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Languages: eng Pagination: 1075-81 Citation Subset: IM |
Affiliation:
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Department of Hematology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, PR China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Antineoplastic Agents, Phytogenic
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pharmacology* Apoptosis / drug effects* Caspase 3 / metabolism Cell Line, Tumor Cell Proliferation / drug effects DNA Fragmentation / drug effects Humans Leukemia / drug therapy*, pathology Membrane Potential, Mitochondrial / drug effects Microtubule-Associated Proteins / analysis Phenanthrenes / pharmacology* Proto-Oncogene Proteins c-bcl-2 / analysis |
| Chemical | |
Reg. No./Substance:
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0/Antineoplastic Agents, Phytogenic; 0/BIRC5 protein, human; 0/Microtubule-Associated Proteins; 0/Phenanthrenes; 0/Proto-Oncogene Proteins c-bcl-2; 568-73-0/tanshinone; EC 3.4.22.-/Caspase 3 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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