|
1
|
Wu JC, Wang CT, Hung HC, Wu WJ, Wu DC, Chang MC, Sung PJ, Chou YW, Wen ZH, Tai MH. Heteronemin Is a Novel c-Met/STAT3 Inhibitor Against Advanced Prostate Cancer Cells. Prostate 2016; 76:1469-1483. [PMID: 27416770 DOI: 10.1002/pros.23230] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Accepted: 06/15/2016] [Indexed: 02/03/2023]
Abstract
BACKGROUND Prostate cancer is one of the most prevalent cancers in men worldwide. Aberrant activation of c-Met/signal transducer and activator of transcription-3 (STAT3) signaling is involved in prostate carcinogenesis, underscoring the demand for developing c-Met/STAT3-targeting drugs. Thus, we first utilized virtual screening strategy to identify STAT3-inhibiting marine compound, heteronemin, and then validated the STAT3-inhibiting function of heteronemin in prostate cancer cells. METHODS Human prostate cancer LNCaP, DU145, and PC-3 cell lines were treated with heteronemin for 24 hr, then the cell viability was evaluated by MTT assay. Flow cytometry was performed to analyze the apoptosis in heteronemin-treated cells. Western blot and quantitative real-time PCR were executed to further confirm the c-Met/STAT3 signaling inhibition by heteronemin in DU145 and PC-3 cells. RESULTS In this study, we employed the virtual screening strategy to identify heteronemin, a spongean sesterterpene, as a potential STAT3 inhibitor from Taiwan marine drugs library. Application of heteronemin potently suppressed the viability and anchorage-independent growth of human prostate cancer cells. Besides, heteronemin induced apoptosis in prostate cancer cells by activation of both intrinsic (caspase-9) and extrinsic (caspase-8) apoptotic pathways. By luciferase assay and expression analysis, it was confirmed that heteronemin inhibited the phosphorylation of c-Met/src/STAT3 signaling axis, STAT3-driven luciferase activities and expression of STAT3-regulated genes including Bcl-xL, Bcl-2, and Cyclin D1. Finally, heteronemin effectively antagonized the hepatocyte growth factor (HGF)-stimulated c-Met/STAT3 activation as well as the proliferation and colonies formation in refractory prostate cancer cells. CONCLUSIONS These findings suggest that heteronemin may constitute a novel c-Met/STAT3-targeting agent for prostate cancer. Prostate 76:1469-1483, 2016. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Jian-Ching Wu
- Doctoral Degree Program in Marine Biotechnology, Academia Sinica, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Chiang-Ting Wang
- Department of Urological Surgery, Kaohsiung Armed Force General Hospital, Kaohsiung, Taiwan
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Han-Chun Hung
- Doctoral Degree Program in Marine Biotechnology, Academia Sinica, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Wen-Jeng Wu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Urology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Urology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Center for Stem Cell Research, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Deng-Chyang Wu
- Center for Stem Cell Research, Kaohsiung Medical University, Kaohsiung, Taiwan
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Faculty of Medicine, Department of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Min-Chi Chang
- Division of Colorectal Surgery, Department of Internal Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Ping-Jyun Sung
- National Museum of Marine Biology and Aquarium, Pingtung, Taiwan
- Institute of Marine Biotechnology, National Dong Hwa University, Pingtung, Taiwan
| | - Yu-Wei Chou
- Tissue Bank and BioBank, Kaohsiung Chang Gung Memorial Hospital, Niao-Song District, Kaohsiung, Taiwan
| | - Zhi-Hong Wen
- Doctoral Degree Program in Marine Biotechnology, Academia Sinica, National Sun Yat-sen University, Kaohsiung, Taiwan.
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan.
| | - Ming-Hong Tai
- Doctoral Degree Program in Marine Biotechnology, Academia Sinica, National Sun Yat-sen University, Kaohsiung, Taiwan.
- Center for Stem Cell Research, Kaohsiung Medical University, Kaohsiung, Taiwan.
- Institute of Biomedical Science, National Sun Yat-sen University, Kaohsiung, Taiwan.
- Center for Neuroscience, National Sun Yat-sen University, Kaohsiung, Taiwan.
| |
Collapse
|
|
2
|
Grossebrummel H, Peter T, Mandelkow R, Weiss M, Muzzio D, Zimmermann U, Walther R, Jensen F, Knabbe C, Zygmunt M, Burchardt M, Stope MB. Cytochrome P450 17A1 inhibitor abiraterone attenuates cellular growth of prostate cancer cells independently from androgen receptor signaling by modulation of oncogenic and apoptotic pathways. Int J Oncol 2015; 48:793-800. [PMID: 26648519 DOI: 10.3892/ijo.2015.3274] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 10/26/2015] [Indexed: 11/05/2022] Open
Abstract
Abiraterone provides significant survival advantages in prostate cancer (PC), however, the current understanding of the molecular mechanisms of abiraterone is still limited. Therefore, the abiraterone impact on androgen receptor (AR)-positive LNCaP and AR-negative PC-3 cells was assessed by cellular and molecular analyses. The present study demonstrated, that abiraterone treatment significantly decreased cell growth, AR expression, and AR activity of AR-positive LNCaP cells. Notably, AR-negative PC-3 cells exhibited comparable reductions in cellular proliferation, associated with DNA fragmentation and pro-apoptotic modulation of p21, caspase-3, survivin, and transforming growth factor β (TGFβ). Our observations suggest that the attenuation of AR signaling is not the only rationale to explain the abiraterone anticancer activity. Abiraterone efficacy may play a more global role in PC progression control than originally hypothesized. In this regard, abiraterone is not only a promising drug for treatment of AR-negative PC stages, even more, abiraterone may represent an alternative for treatment of other malignancies besides prostate cancer.
Collapse
Affiliation(s)
- Hannah Grossebrummel
- Department of Urology, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Tilmann Peter
- Department of Urology, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Robert Mandelkow
- Department of Urology, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Martin Weiss
- Department of Urology, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Damian Muzzio
- Department of Obstetrics and Gynaecology, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Uwe Zimmermann
- Department of Urology, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Reinhard Walther
- Department of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Federico Jensen
- Department of Obstetrics and Gynaecology, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Cornelius Knabbe
- Institute for Laboratory and Transfusion Medicine, Heart and Diabetes Center North Rhine-Westphalia, Ruhr University Bochum, D-32545 Bad Oeynhausen, Germany
| | - Marek Zygmunt
- Department of Obstetrics and Gynaecology, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Martin Burchardt
- Department of Urology, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Matthias B Stope
- Department of Urology, University Medicine Greifswald, D-17475 Greifswald, Germany
| |
Collapse
|
|
3
|
Bhattacharya S, Hirmand M, Phung D, van Os S. Development of enzalutamide for metastatic castration-resistant prostate cancer. Ann N Y Acad Sci 2015; 1358:13-27. [DOI: 10.1111/nyas.12846] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | | | - De Phung
- Astellas Pharma Global Development, Inc; Leiden the Netherlands
| | - Steve van Os
- Astellas Pharma Global Development, Inc; Leiden the Netherlands
| |
Collapse
|
|
4
|
Merseburger AS, Bellmunt J, Jenkins C, Parker C, Fitzpatrick JM. Perspectives on treatment of metastatic castration-resistant prostate cancer. Oncologist 2013; 18:558-67. [PMID: 23671006 PMCID: PMC3662847 DOI: 10.1634/theoncologist.2012-0478] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2012] [Accepted: 03/18/2013] [Indexed: 01/28/2023] Open
Abstract
The arrival of several new agents--cabazitaxel, abiraterone acetate, enzalutamide, and radium-223--is changing the treatment options and management of patients with metastatic castration-resistant prostate cancer (mCRPC). Many other novel agents are also being investigated. As new drugs become approved, new treatment strategies and markers to best select which patients will best respond to which drug are needed. This review article is a summary of a European Treatment Practices Meeting, which was convened to discuss these latest data on novel agents and current treatment strategies in the mCRPC setting.
Collapse
Affiliation(s)
- Axel S Merseburger
- Department of Urology and Urologic Oncology, Hannover Medical School, Hannover, Germany.
| | | | | | | | | |
Collapse
|