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Glycyrrhizin induces apoptosis in prostate cancer cell lines DU-145 and LNCaP. 2008

Sivasakthivel Thirugnanam, and Lipeng Xu, and Kalyanasundaram Ramaswamy, and Munirathinam Gnanasekar
Department of Biomedical Sciences, University of Illinois, College of Medicine, Rockford, IL 61107, USA.

Over 2 million Americans are currently living with prostate cancer. Current chemotherapeutic strategies are only partially effective in controlling the disease. There is always a need for an effective newer drug for treating prostate cancer. Use of active principles from medically important herbs has proven to be effective in treating various forms of cancers. Glycyrrhizin, a triterpene compound isolated from roots of licorice has been found to exhibit potent in vitro cytotoxic activity against several human cancer cell lines. In this study, we evaluated the effects of glycyrrhizin on the viability of two human prostate cancer cells LNCaP (hormone-dependent) and DU-145 (hormone-independent) in vitro. Cell viability assay showed that glycyrrhizin inhibited the cell proliferation of prostate cancer cells in a time- and dose-dependent manner. The decreased viability of prostate cancer cells was due to apoptosis as confirmed by Annexin-V FITC flow cytometric analyses. Glycyrrhizin also caused DNA damage in DU-145 and LNCaP cells in a time-dependent manner. Caspase-3 and -8 activities were not detected in glycyrrhizin-treated prostate cancer cells suggesting that caspase-independent pathways may be involved in the apoptotic mechanism. Collectively, these studies suggest that glycyrrhizin has therapeutic potential against prostate cancer.

UI MeSH Term Description Entries
D008297 Male Males
D008956 Models, Chemical Theoretical representations that simulate the behavior or activity of chemical processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment. Chemical Models,Chemical Model,Model, Chemical
D009369 Neoplasms New abnormal growth of tissue. Malignant neoplasms show a greater degree of anaplasia and have the properties of invasion and metastasis, compared to benign neoplasms. Benign Neoplasm,Cancer,Malignant Neoplasm,Tumor,Tumors,Benign Neoplasms,Malignancy,Malignant Neoplasms,Neoplasia,Neoplasm,Neoplasms, Benign,Cancers,Malignancies,Neoplasias,Neoplasm, Benign,Neoplasm, Malignant,Neoplasms, Malignant
D002470 Cell Survival The span of viability of a cell characterized by the capacity to perform certain functions such as metabolism, growth, reproduction, some form of responsiveness, and adaptability. Cell Viability,Cell Viabilities,Survival, Cell,Viabilities, Cell,Viability, Cell
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D004354 Drug Screening Assays, Antitumor Methods of investigating the effectiveness of anticancer cytotoxic drugs and biologic inhibitors. These include in vitro cell-kill models and cytostatic dye exclusion tests as well as in vivo measurement of tumor growth parameters in laboratory animals. Anticancer Drug Sensitivity Tests,Antitumor Drug Screens,Cancer Drug Tests,Drug Screening Tests, Tumor-Specific,Dye Exclusion Assays, Antitumor,Anti-Cancer Drug Screens,Antitumor Drug Screening Assays,Tumor-Specific Drug Screening Tests,Anti Cancer Drug Screens,Anti-Cancer Drug Screen,Antitumor Drug Screen,Cancer Drug Test,Drug Screen, Anti-Cancer,Drug Screen, Antitumor,Drug Screening Tests, Tumor Specific,Drug Screens, Anti-Cancer,Drug Screens, Antitumor,Drug Test, Cancer,Drug Tests, Cancer,Screen, Anti-Cancer Drug,Screen, Antitumor Drug,Screens, Anti-Cancer Drug,Screens, Antitumor Drug,Test, Cancer Drug,Tests, Cancer Drug,Tumor Specific Drug Screening Tests
D004587 Electrophoresis, Agar Gel Electrophoresis in which agar or agarose gel is used as the diffusion medium. Electrophoresis, Agarose Gel,Agar Gel Electrophoresis,Agarose Gel Electrophoresis,Gel Electrophoresis, Agar,Gel Electrophoresis, Agarose
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000893 Anti-Inflammatory Agents Substances that reduce or suppress INFLAMMATION. Anti-Inflammatory Agent,Antiinflammatory Agent,Agents, Anti-Inflammatory,Agents, Antiinflammatory,Anti-Inflammatories,Antiinflammatories,Antiinflammatory Agents,Agent, Anti-Inflammatory,Agent, Antiinflammatory,Agents, Anti Inflammatory,Anti Inflammatories,Anti Inflammatory Agent,Anti Inflammatory Agents
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor

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