1
|
Eigentler A, Handle F, Schanung S, Degen A, Hackl H, Erb HHH, Fotakis G, Hoefer J, Ploner C, Jöhrer K, Heidegger I, Pircher A, Klotz W, Herold M, Schäfer G, Culig Z, Puhr M. Glucocorticoid treatment influences prostate cancer cell growth and the tumor microenvironment via altered glucocorticoid receptor signaling in prostate fibroblasts. Oncogene 2024; 43:235-247. [PMID: 38017134 PMCID: PMC10798901 DOI: 10.1038/s41388-023-02901-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 11/09/2023] [Accepted: 11/15/2023] [Indexed: 11/30/2023]
Abstract
Despite significant therapeutic advances in recent years, treatment of metastatic prostate cancer (PCa) remains palliative, owing to the inevitable occurrence of drug resistance. There is increasing evidence that epithelial glucocorticoid receptor (GR) signaling and changes in the tumor-microenvironment (TME) play important roles in this process. Since glucocorticoids (GCs) are used as concomitant medications in the course of PCa treatment, it is essential to investigate the impact of GCs on stromal GR signaling in the TME. Therefore, general GR mRNA and protein expression was assessed in radical prostatectomy specimens and metastatic lesions. Elevated stromal GR signaling after GC treatment resulted in altered GR-target gene, soluble protein expression, and in a morphology change of immortalized and primary isolated cancer-associated fibroblasts (CAFs). Subsequently, these changes affected proliferation, colony formation, and 3D-spheroid growth of multiple epithelial PCa cell models. Altered expression of extra-cellular matrix (ECM) and adhesion-related proteins led to an ECM remodeling. Notably, androgen receptor pathway inhibitor treatments did not affect CAF viability. Our findings demonstrate that GC-mediated elevated GR signaling has a major impact on the CAF secretome and the ECM architecture. GC-treated fibroblasts significantly influence epithelial tumor cell growth and must be considered in future therapeutic strategies.
Collapse
Affiliation(s)
- Andrea Eigentler
- Department of Urology, Medical University of Innsbruck, Innsbruck, Austria
| | - Florian Handle
- Department of Urology, Medical University of Innsbruck, Innsbruck, Austria
- Institute of Pathology, Neuropathology and Molecular Pathology, Medical University of Innsbruck, Innsbruck, Austria
| | - Silvia Schanung
- Department of Urology, Medical University of Innsbruck, Innsbruck, Austria
| | - Antonia Degen
- Department of Urology, Medical University of Innsbruck, Innsbruck, Austria
| | - Hubert Hackl
- Institute of Bioinformatics, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
| | - Holger H H Erb
- Department of Urology, Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Georgios Fotakis
- Institute of Bioinformatics, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
| | - Julia Hoefer
- Department of Urology, Medical University of Innsbruck, Innsbruck, Austria
| | - Christian Ploner
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Karin Jöhrer
- Innovacell GesmbH, Mitterweg 25, Innsbruck, Austria
| | - Isabel Heidegger
- Department of Urology, Medical University of Innsbruck, Innsbruck, Austria
| | - Andreas Pircher
- Department of Internal Medicine V, Medical University of Innsbruck, Innsbruck, Austria
| | - Werner Klotz
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Manfred Herold
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Georg Schäfer
- Institute of Pathology, Neuropathology and Molecular Pathology, Medical University of Innsbruck, Innsbruck, Austria
| | - Zoran Culig
- Department of Urology, Medical University of Innsbruck, Innsbruck, Austria
| | - Martin Puhr
- Department of Urology, Medical University of Innsbruck, Innsbruck, Austria.
| |
Collapse
|
2
|
Hirata S, Mishiro K, Higashi T, Fuchigami T, Munekane M, Arano Y, Kinuya S, Ogawa K. Synthesis and evaluation of a multifunctional probe with a high affinity for prostate-specific membrane antigen (PSMA) and bone. Nucl Med Biol 2022; 114-115:34-41. [PMID: 36088875 DOI: 10.1016/j.nucmedbio.2022.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 12/27/2022]
Abstract
Prostate cancer frequently metastasizes to the bone. Because patients with bone metastases suffer from skeletal-related events, the diagnosis and treatment of bone metastases in the early stage are important. In this study, to improve the sensitivity of detecting bone metastases in patients with prostate cancer, we designed, synthesized, and evaluated a multifunctional radiotracer, [67Ga]Ga-D11-PSMA-617 ([67Ga]3), with an undeca-aspartic acid as a bone-seeking moiety between [67Ga]Ga-DOTA and a prostate-specific membrane antigen (PSMA) ligand based on the lysine-urea-glutamate motif. [67Ga]3 showed a high affinity for hydroxyapatite and high uptake in PSMA-positive LNCaP cells. Moreover, in biodistribution experiments using tumor-bearing mice, [67Ga]3 exhibited high accumulation in the bone and PSMA-positive tumor although the accumulation of [67Ga]3 in the PSMA-positive tumor was lower than that of [67Ga]Ga-PSMA-617. This study provides valuable information for developing radiotheranostic probes combining multiple carriers with different mechanisms.
Collapse
Affiliation(s)
- Saki Hirata
- Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-1192, Japan
| | - Kenji Mishiro
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa 920-1192, Japan
| | - Takuma Higashi
- Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-1192, Japan
| | - Takeshi Fuchigami
- Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-1192, Japan
| | - Masayuki Munekane
- Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-1192, Japan
| | - Yasushi Arano
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Seigo Kinuya
- Department of Nuclear Medicine, Kanazawa University Hospital, Kanazawa University, Kanazawa 920-8641, Japan
| | - Kazuma Ogawa
- Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-1192, Japan; Institute for Frontier Science Initiative, Kanazawa University, Kanazawa 920-1192, Japan.
| |
Collapse
|
3
|
Cioni B, Zaalberg A, van Beijnum JR, Melis MHM, van Burgsteden J, Muraro MJ, Hooijberg E, Peters D, Hofland I, Lubeck Y, de Jong J, Sanders J, Vivié J, van der Poel HG, de Boer JP, Griffioen AW, Zwart W, Bergman AM. Androgen receptor signalling in macrophages promotes TREM-1-mediated prostate cancer cell line migration and invasion. Nat Commun 2020; 11:4498. [PMID: 32908142 PMCID: PMC7481219 DOI: 10.1038/s41467-020-18313-y] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 06/29/2020] [Indexed: 12/14/2022] Open
Abstract
The androgen receptor (AR) is the master regulator of prostate cancer (PCa) development, and inhibition of AR signalling is the most effective PCa treatment. AR is expressed in PCa cells and also in the PCa-associated stroma, including infiltrating macrophages. Macrophages have a decisive function in PCa initiation and progression, but the role of AR in macrophages remains largely unexplored. Here, we show that AR signalling in the macrophage-like THP-1 cell line supports PCa cell line migration and invasion in culture via increased Triggering Receptor Expressed on Myeloid cells-1 (TREM-1) signalling and expression of its downstream cytokines. Moreover, AR signalling in THP-1 and monocyte-derived macrophages upregulates IL-10 and markers of tissue residency. In conclusion, our data suggest that AR signalling in macrophages may support PCa invasiveness, and blocking this process may constitute one mechanism of anti-androgen therapy. Anti-androgen therapy inhibits prostate cancer (PC) progression, and is thought to act directly on cancer cells. Here the authors show that androgen receptor is expressed on normal and PC-associated macrophages, and its stimulation alters macrophage secretome to promote migration of cultured PC cell lines.
Collapse
Affiliation(s)
- Bianca Cioni
- Divisions of Oncogenomics, The Netherlands Cancer Institute (NKI), Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Anniek Zaalberg
- Divisions of Oncogenomics, The Netherlands Cancer Institute (NKI), Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Judy R van Beijnum
- Angiogenesis laboratory, Medical Oncology, Amsterdam UMC, Cancer Center Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Monique H M Melis
- Molecular Genetics, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | | | - Mauro J Muraro
- Hubrecht Institute - KNAW and University Medical Center Utrecht, Uppsalalaan 8, 3584CT, Utrecht, The Netherlands
| | - Erik Hooijberg
- Division of Pathology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Dennis Peters
- Core Facility Molecular Pathology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Ingrid Hofland
- Core Facility Molecular Pathology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Yoni Lubeck
- Division of Pathology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Jeroen de Jong
- Division of Pathology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Joyce Sanders
- Division of Pathology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Judith Vivié
- Hubrecht Institute - KNAW and University Medical Center Utrecht, Uppsalalaan 8, 3584CT, Utrecht, The Netherlands
| | - Henk G van der Poel
- Urology and Medical Oncology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Jan Paul de Boer
- Urology and Medical Oncology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands
| | - Arjan W Griffioen
- Angiogenesis laboratory, Medical Oncology, Amsterdam UMC, Cancer Center Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Wilbert Zwart
- Divisions of Oncogenomics, The Netherlands Cancer Institute (NKI), Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands. .,Laboratory of Chemical Biology and Institute for Complex Molecular Systems, Department of Biomedical Engineering, Eindhoven University of Technology, PO Box 513, 5600MB, Eindhoven, The Netherlands. .,, Oncode Institute, The Netherlands.
| | - Andries M Bergman
- Divisions of Oncogenomics, The Netherlands Cancer Institute (NKI), Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands. .,Urology and Medical Oncology, NKI, Plesmanlaan 121, 1066CX, Amsterdam, The Netherlands.
| |
Collapse
|
4
|
Application of Anti-Inflammatory Agents in Prostate Cancer. J Clin Med 2020; 9:jcm9082680. [PMID: 32824865 PMCID: PMC7464558 DOI: 10.3390/jcm9082680] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/14/2020] [Accepted: 08/17/2020] [Indexed: 02/06/2023] Open
Abstract
Chronic inflammation is a major cause of human cancers. The environmental factors, such as microbiome, dietary components, and obesity, provoke chronic inflammation in the prostate, which promotes cancer development and progression. Crosstalk between immune cells and cancer cells enhances the secretion of intercellular signaling molecules, such as cytokines and chemokines, thereby orchestrating the generation of inflammatory microenvironment. Tumor-associated macrophages (TAMs) and myeloid-derived suppressor cells (MDSCs) play pivotal roles in inflammation-associated cancer by inhibiting effective anti-tumor immunity. Anti-inflammatory agents, such as aspirin, metformin, and statins, have potential application in chemoprevention of prostate cancer. Furthermore, pro-inflammatory immunity-targeted therapies may provide novel strategies to treat patients with cancer. Thus, anti-inflammatory agents are expected to suppress the “vicious cycle” created by immune and cancer cells and inhibit cancer progression. This review has explored the immune cells that facilitate prostate cancer development and progression, with particular focus on the application of anti-inflammatory agents for both chemoprevention and therapeutic approach in prostate cancer.
Collapse
|
5
|
Schatten H. Immunodiagnostics and Immunotherapy Possibilities for Prostate Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1096:185-194. [PMID: 30324354 DOI: 10.1007/978-3-319-99286-0_10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Despite significant progress in early detection and improved treatment modalities prostate cancer remains the second leading cause of cancer death in American men which results in about 30,000 deaths per year in the USA. An aggressive phenotype leading to 2.58% risk of dying from prostate cancer still exists and immunotherapy has offered new possibilities to treat metastatic prostate cancer that cannot be treated by other modalities. Cancer immunotherapy is a rapidly growing field of research aimed at identifying biomarkers in immunodiagnosis and to develop new therapies by enabling the immune system to detect and destroy cancer cells. Immunotherapy falls into three different broad categories which are checkpoint inhibitors, cytokines, and vaccine immunotherapy. While immunotherapy to treat prostate cancer is still limited progress has been made; for treatment of advanced prostate cancer sipuleucel-T has been administered to patients in personalized doses to destroy prostate cancer cells which is promising and invites further research to determine immunotherapies for advanced prostate cancer. Antibody-based targeted immunotherapy and dendritic-cell-based vaccination are among the therapies that are currently being evaluated as promising approaches to treat prostate cancer. Combination immunotherapies include prostate cancer vaccines and radiotherapy for castration resistant prostate cancer. Microbial vectors for prostate cancer immunotherapy have been developed and bacterial strains have been engineered to express cancer-specific antigens, cytokines, and prodrug-converting cytokines. These approaches are addressed in the present review.
Collapse
Affiliation(s)
- Heide Schatten
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO, USA.
| |
Collapse
|
6
|
Mussawy H, Viezens L, Schroeder M, Hettenhausen S, Sündermann J, Wellbrock J, Kossow K, Schaefer C. The bone microenvironment promotes tumor growth and tissue perfusion compared with striated muscle in a preclinical model of prostate cancer in vivo. BMC Cancer 2018; 18:979. [PMID: 30326868 PMCID: PMC6192198 DOI: 10.1186/s12885-018-4905-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 10/05/2018] [Indexed: 12/21/2022] Open
Abstract
Background Prostate cancer-related morbidity is associated with its preferential spread to the bone. Although the molecular interactions between the bone microenvironment and cancer cells have been researched extensively, the relevance of the microvascular properties of prostate cancer bone metastases remains largely unknown. Most preclinical studies focusing on microvascular analyses are based on heterotopic tumor implantation, whereas the impact of the microenvironment on site-specific growth behavior and angiogenesis is rarely addressed. Methods The microvascular changes associated with tumor growth in bone and soft tissue were characterized by implanting single cell suspensions of LnCap, Du145, and Pc3 cells into the femur (femur window) or striated muscle (dorsal skinfold chamber) of NSG mice. Tumor growth and the local microvasculature were analyzed for 21 days using intravital fluorescence microscopy. Results The results showed a higher engraftment of tumor cells in bone than in striated muscle associated with accelerated growth of LnCap cells and Pc3 cells. Permeability, blood flow, and tissue perfusion rates were greater in bone than in striated muscle. Du145 cells showed similar growth behavior in both tissues with similar vascular properties. The bone microenvironment facilitated tumor engraftment and growth. Increased microvascular density in striated muscle led to a higher tumor burden during early growth, whereas the increased perfusion promoted later prostate cancer growth in bone. Conclusions Monitoring prostate cancer microcirculation in bone and soft tissue may be useful to evaluate the organ-specific efficacy of new treatments. Electronic supplementary material The online version of this article (10.1186/s12885-018-4905-5) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Haider Mussawy
- Department of Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany.
| | - Lennart Viezens
- Department of Trauma, Orthopaedic, and Plastic Surgery, University Medical Center Goettingen, Goettingen, Germany
| | - Malte Schroeder
- Department of Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany.,Department of Spine Surgery, Klinikum Bad Bramstedt, 24576, Bad Bramstedt, Germany
| | - Svenja Hettenhausen
- Department of Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany
| | - Jördis Sündermann
- Department of Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany
| | - Jasmin Wellbrock
- Department of Hematology, Oncology and Stem Cell Transplantation with Section Pneumology, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany
| | - Kai Kossow
- Center of Psychosocial Medicine, Institute and Policlinics of Medical Psychology, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany
| | - Christian Schaefer
- Department of Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany.,Department of Spine Surgery, Klinikum Bad Bramstedt, 24576, Bad Bramstedt, Germany
| |
Collapse
|
7
|
Tewari AK, Stockert JA, Yadav SS, Yadav KK, Khan I. Inflammation and Prostate Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1095:41-65. [PMID: 30229548 DOI: 10.1007/978-3-319-95693-0_3] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Chronic inflammation resulting from infections, altered metabolism, inflammatory diseases or other environmental factors can be a major contributor to the development of several types of cancer. In fact around 20% of all cancers are linked to some form of inflammation. Evidence gathered from genetic, epidemiological and molecular pathological studies suggest that inflammation plays a crucial role at various stages of prostatic carcinogenesis and tumor progression. These include initiation, promotion, malignant conversion, invasion, and metastasis. Detailed basic and clinical research in these areas, focused towards understanding the etiology of prostatic inflammation, as well as the exact roles that various signaling pathways play in promoting tumor growth, is critical for understanding this complex process. The information gained would be useful in developing novel therapeutic strategies such as molecular targeting of inflammatory mediators and immunotherapy-based approaches.
Collapse
Affiliation(s)
- Ashutosh K Tewari
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, USA.
| | - Jennifer A Stockert
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Shalini S Yadav
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Kamlesh K Yadav
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Irtaza Khan
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, USA
| |
Collapse
|
8
|
Du J, Jin T, Cao Y, Chen J, Guo Y, Sun M, Li J, Zhang X, Wang G, Wang J. Association between genetic polymorphisms of MMP8 and the risk of steroid-induced osteonecrosis of the femoral head in the population of northern China. Medicine (Baltimore) 2016; 95:e4794. [PMID: 27631232 PMCID: PMC5402575 DOI: 10.1097/md.0000000000004794] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Steroid-induced osteonecrosis of the femoral head (ONFH) is the most common clinical nontraumatic ONFH. Once ONFH occurs, it seriously reduces patients' quality of life. The matrix metalloproteinase/tissue inhibitor of metalloproteinase (MMP/TIMP) system was found to play a significant role in the development of ONFH. The aim of this study was to identify the associations between 7 genes selected from the MMP/TIMP system and steroid-induced ONFH. METHODS We genotyped 34 single-nucleotide polymorphisms (SNPs) of 7 genes selected from the MMP/TIMP system in a case-control study with 285 cases of steroid-induced ONFH and 308 healthy controls. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated using the chi-squared test, genetic model analysis, haplotype analysis, and stratification analysis. RESULTS We found that the minor alleles of rs1940475 and rs11225395 in MMP8 were associated with a 1.32-fold increased risk of steroid-induced ONFH in the allelic model analysis (P = 0.021 and 0.022, respectively). In the genetic model analysis, we found that rs3740938, rs2012390, rs1940475, and rs11225395 were associated with an increased risk of steroid-induced ONFH. In further stratification analysis, rs3740938 and rs2012390 displayed a significantly increased risk of steroid-induced ONFH in females under the dominant (rs3740938, OR = 2.69, 95% CI: 1.50-4.83, P = 0.001; rs2012390, OR = 2.30, 95% CI: 1.31-4.03, P = 0.012) and additive (rs3740938, OR = 2.02, 95% CI: 1.24-3.29, P = 0.010; rs2012390, OR = 1.77, 95% CI: 1.12-2.80, P = 0.047) models. In addition, haplotype "AGTCA" of MMP8 was found to be associated with a 1.40-fold increased risk of steroid-induced ONFH (95% CI: 1.04-1.88, P = 0.025). CONCLUSION Our results verify that genetic variants of MMP8 contribute to steroid-induced ONFH susceptibility in the population of northern China. In addition, we found that gender differences might interact with MMP8 polymorphisms to contribute to the overall susceptibility to steroid-induced ONFH.
Collapse
Affiliation(s)
- Jieli Du
- Inner Mongolia Medical University, Hohhot, Inner Mongolia
- Department of Orthopedics and Traumatology, The 2th Affiliated Hospital of Inner Mongolia University, Hohhot, Inner Mongolia, China
| | - Tianbo Jin
- The College of Life Sciences, Northwest University
- National Engineering Research Center for Miniaturized Detection Systems, Xi’an, Shanxi
| | - Yuju Cao
- Zhengzhou TCM Traumatology Hospital, Zhengzhou, Henan
| | - Junyu Chen
- Inner Mongolia Medical University, Hohhot, Inner Mongolia
- Department of Orthopedics and Traumatology, The 2th Affiliated Hospital of Inner Mongolia University, Hohhot, Inner Mongolia, China
| | - Yongchang Guo
- Zhengzhou TCM Traumatology Hospital, Zhengzhou, Henan
| | - Mingqi Sun
- Department of Orthopedics and Traumatology, The 2th Affiliated Hospital of Inner Mongolia University, Hohhot, Inner Mongolia, China
| | - Jian Li
- Zhengzhou TCM Traumatology Hospital, Zhengzhou, Henan
| | - Xiyang Zhang
- The College of Life Sciences, Northwest University
- National Engineering Research Center for Miniaturized Detection Systems, Xi’an, Shanxi
| | - Guoqiang Wang
- Department of Orthopedics and Traumatology, The 2th Affiliated Hospital of Inner Mongolia University, Hohhot, Inner Mongolia, China
- Correspondence: Guoqiang Wang, The Second Affiliated Hospital, Inner Mongolia Medical University, 1 Yingfang Road, Hohhot 010050, Inner Mongolia, China (e-mail: ); Jianzhong Wang, The Second Affiliated Hospital, Inner Mongolia Medical University, 1 Yingfang Road, Hohhot 010050, Inner Mongolia, China (e-mail: )
| | - Jianzhong Wang
- Department of Orthopedics and Traumatology, The 2th Affiliated Hospital of Inner Mongolia University, Hohhot, Inner Mongolia, China
- Correspondence: Guoqiang Wang, The Second Affiliated Hospital, Inner Mongolia Medical University, 1 Yingfang Road, Hohhot 010050, Inner Mongolia, China (e-mail: ); Jianzhong Wang, The Second Affiliated Hospital, Inner Mongolia Medical University, 1 Yingfang Road, Hohhot 010050, Inner Mongolia, China (e-mail: )
| |
Collapse
|
9
|
Starobinets O, Korn N, Iqbal S, Noworolski SM, Zagoria R, Kurhanewicz J, Westphalen AC. Practical aspects of prostate MRI: hardware and software considerations, protocols, and patient preparation. Abdom Radiol (NY) 2016; 41:817-30. [PMID: 27193785 DOI: 10.1007/s00261-015-0590-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The use of multiparametric MRI scans for the evaluation of men with prostate cancer has increased dramatically and is likely to continue expanding as new developments come to practice. However, it has not yet gained the same level of acceptance of other imaging tests. Partly, this is because of the use of suboptimal protocols, lack of standardization, and inadequate patient preparation. In this manuscript, we describe several practical aspects of prostate MRI that may facilitate the implementation of new prostate imaging programs or the expansion of existing ones.
Collapse
Affiliation(s)
- Olga Starobinets
- Graduate Group of Bioengineering, Department of Radiology and Biomedical Imaging, University of California San Francisco, 185 Berry Street, Box 0946, San Francisco, CA, 94143, USA
| | - Natalie Korn
- Graduate Group of Bioengineering, Department of Radiology and Biomedical Imaging, University of California San Francisco, 185 Berry Street, Box 0946, San Francisco, CA, 94143, USA
| | - Sonam Iqbal
- Graduate Group of Bioengineering, Department of Radiology and Biomedical Imaging, University of California San Francisco, 185 Berry Street, Box 0946, San Francisco, CA, 94143, USA
| | - Susan M Noworolski
- Graduate Group of Bioengineering, Department of Radiology and Biomedical Imaging, University of California San Francisco, 185 Berry Street, Box 0946, San Francisco, CA, 94143, USA
| | - Ronald Zagoria
- Department of Radiology and Biomedical Imaging, University of California San Francisco, 505 Parnassus Avenue, M372, Box 0628, San Francisco, CA, 94143, USA
| | - John Kurhanewicz
- Graduate Group of Bioengineering, Department of Radiology and Biomedical Imaging, University of California San Francisco, 1700 4th Street, Ste. 203, San Francisco, CA, 94158, USA
| | - Antonio C Westphalen
- Department of Radiology and Biomedical Imaging, University of California San Francisco, 505 Parnassus Avenue, M372, Box 0628, San Francisco, CA, 94143, USA.
| |
Collapse
|
10
|
Peng H, Zhao W, Tan H, Ji Z, Li J, Li K, Zhou X. Prediction of treatment efficacy for prostate cancer using a mathematical model. Sci Rep 2016; 6:21599. [PMID: 26868634 PMCID: PMC4751505 DOI: 10.1038/srep21599] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 01/27/2016] [Indexed: 12/23/2022] Open
Abstract
Prostate immune system plays a critical role in the regulation of prostate cancer development regarding androgen-deprivation therapy (ADT) and/or immunotherapy (vaccination). In this study, we developed a mathematical model to explore the interactions between prostate tumor and immune microenvironment. This model was used to predict treatment outcomes for prostate cancer with ADT, vaccination, Treg depletion and/or IL-2 neutralization. Animal data were used to guide construction, parameter selection, and validation of our model. Our analysis shows that Treg depletion and/or IL-2 neutralization can effectively improve the treatment efficacy of combined therapy with ADT and vaccination. Treg depletion has a higher synergetic effect than that from IL-2 neutralization. This study highlights a potential therapeutic strategy in effectively managing prostate tumor growth and provides a framework of systems biology approach in studying tumor-related immune mechanism and consequent selection of therapeutic regimens.
Collapse
Affiliation(s)
- Huiming Peng
- Division of Radiologic Sciences – Center for Bioinformatics and Systems Biology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Weiling Zhao
- Division of Radiologic Sciences – Center for Bioinformatics and Systems Biology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Hua Tan
- Division of Radiologic Sciences – Center for Bioinformatics and Systems Biology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Zhiwei Ji
- Division of Radiologic Sciences – Center for Bioinformatics and Systems Biology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Jingsong Li
- College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, China
| | - King Li
- Division of Radiologic Sciences – Center for Bioinformatics and Systems Biology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Xiaobo Zhou
- Division of Radiologic Sciences – Center for Bioinformatics and Systems Biology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| |
Collapse
|
11
|
Hossain DMS, Pal SK, Moreira D, Duttagupta P, Zhang Q, Won H, Jones J, D'Apuzzo M, Forman S, Kortylewski M. TLR9-Targeted STAT3 Silencing Abrogates Immunosuppressive Activity of Myeloid-Derived Suppressor Cells from Prostate Cancer Patients. Clin Cancer Res 2015; 21:3771-82. [PMID: 25967142 DOI: 10.1158/1078-0432.ccr-14-3145] [Citation(s) in RCA: 139] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 04/21/2015] [Indexed: 12/31/2022]
Abstract
PURPOSE Recent advances in immunotherapy of advanced human cancers underscored the need to address and eliminate tumor immune evasion. The myeloid-derived suppressor cells (MDSC) are important inhibitors of T-cell responses in solid tumors, such as prostate cancers. However, targeting MDSCs proved challenging due to their phenotypic heterogeneity. EXPERIMENTAL DESIGN Myeloid cell populations were evaluated using flow cytometry on blood samples, functional assays, and immunohistochemical/immunofluorescent stainings on specimens from healthy subjects, localized and metastatic castration-resistant prostate cancer patients. RESULTS Here, we identify a population of Lin(-)CD15(HI)CD33(LO) granulocytic MDSCs that accumulate in patients' circulation during prostate cancer progression from localized to metastatic disease. The prostate cancer-associated MDSCs potently inhibit autologous CD8(+) T cells' proliferation and production of IFNγ and granzyme-B. The circulating MDSCs have high levels of activated STAT3, which is a central immune checkpoint regulator. The granulocytic pSTAT3(+) cells are also detectable in patients' prostate tissues. We previously generated an original strategy to silence genes specifically in Toll-like Receptor-9 (TLR9) positive myeloid cells using CpG-siRNA conjugates. We demonstrate that human granulocytic MDSCs express TLR9 and rapidly internalize naked CpG-STAT3siRNA, thereby silencing STAT3 expression. STAT3 blocking abrogates immunosuppressive effects of patients-derived MDSCs on effector CD8(+) T cells. These effects depended on reduced expression and enzymatic activity of Arginase-1, a downstream STAT3 target gene and a potent T-cell inhibitor. CONCLUSIONS Overall, we demonstrate the accumulation of granulocytic MDSCs with prostate cancer progression and the feasibility of using TLR9-targeted STAT3siRNA delivery strategy to alleviate MDSC-mediated immunosuppression.
Collapse
Affiliation(s)
- Dewan M S Hossain
- Department of Cancer Immunotherapeutics & Tumor Immunology, Beckman Research Institute at City of Hope, Duarte, California
| | - Sumanta K Pal
- Department of Medical Oncology and Experimental Therapeutics, Beckman Research Institute at City of Hope, Duarte, California.
| | - Dayson Moreira
- Department of Cancer Immunotherapeutics & Tumor Immunology, Beckman Research Institute at City of Hope, Duarte, California
| | - Priyanka Duttagupta
- Department of Cancer Immunotherapeutics & Tumor Immunology, Beckman Research Institute at City of Hope, Duarte, California
| | - Qifang Zhang
- Department of Cancer Immunotherapeutics & Tumor Immunology, Beckman Research Institute at City of Hope, Duarte, California
| | - Haejung Won
- Department of Cancer Immunotherapeutics & Tumor Immunology, Beckman Research Institute at City of Hope, Duarte, California
| | - Jeremy Jones
- Department of Cancer Biology, Beckman Research Institute at City of Hope, Duarte, California
| | - Massimo D'Apuzzo
- Department of Pathology, Beckman Research Institute at City of Hope, Duarte, California
| | - Stephen Forman
- Department of Hematology and Hematopoietic Cell Transplantation, Beckman Research Institute at City of Hope, Duarte, California
| | - Marcin Kortylewski
- Department of Cancer Immunotherapeutics & Tumor Immunology, Beckman Research Institute at City of Hope, Duarte, California.
| |
Collapse
|
12
|
Pinto F, Pértega-Gomes N, Pereira MS, Vizcaíno JR, Monteiro P, Henrique RM, Baltazar F, Andrade RP, Reis RM. T-box transcription factor brachyury is associated with prostate cancer progression and aggressiveness. Clin Cancer Res 2014; 20:4949-61. [PMID: 25009296 DOI: 10.1158/1078-0432.ccr-14-0421] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Successful therapy of patients with prostate cancer is highly dependent on reliable diagnostic and prognostic biomarkers. Brachyury is considered a negative prognostic factor in colon and lung cancer; however, there are no reports on Brachyury's expression in prostate cancer. EXPERIMENTAL DESIGN In this study, we aimed to assess the impact of Brachyury expression in prostate tumorigenesis using a large series of human prostate samples comprising benign tissue, prostate intraepithelial neoplasia (PIN) lesions, localized tumor, and metastatic tissues. The results obtained were compared with what can be inferred from the Oncomine database. In addition, multiple in vitro models of prostate cancer were used to dissect the biologic role of Brachyury in prostate cancer progression. RESULTS We found that Brachyury is significantly overexpressed in prostate cancer and metastatic tumors when compared with normal tissues, both at protein and at mRNA levels. Brachyury expression in the cytoplasm correlates with highly aggressive tumors, whereas the presence of Brachyury in the nucleus is correlated with tumor invasion. We found that Brachyury-positive cells present higher viability, proliferation, migration, and invasion rates than Brachyury-negative cells. Microarray analysis further showed that genes co-expressed with Brachyury are clustered in oncogenic-related pathways, namely cell motility, cell-cycle regulation, and cell metabolism. CONCLUSIONS Collectively, the present study suggests that Brachyury plays an important role in prostate cancer aggressiveness and points, for the first time, to Brachyury as a significant predictor of poor prostate cancer prognosis. Our work paves the way for future studies assessing Brachyury as a possible prostate cancer therapeutic target.
Collapse
Affiliation(s)
- Filipe Pinto
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal. ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Nelma Pértega-Gomes
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal. ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Márcia S Pereira
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal. ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - José R Vizcaíno
- Department of Pathology, Centro Hospitalar do Porto, Portugal
| | | | - Rui M Henrique
- Cancer Epigenetics Group - Research Center, Portuguese Oncology Institute-Porto, Porto, Portugal. Department of Pathology and Molecular Immunology, Institute of Biomedical Sciences, University of Porto, Porto, Portugal. Department of Pathology, Portuguese Oncology Institute - Porto, Porto, Portugal
| | - Fátima Baltazar
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal. ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Raquel P Andrade
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal. ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rui M Reis
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal. ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal. Molecular Oncology Research Center, Barretos Cancer Hospital, S. Paulo, Brazil.
| |
Collapse
|
13
|
Identification of genes regulating migration and invasion using a new model of metastatic prostate cancer. BMC Cancer 2014; 14:387. [PMID: 24885350 PMCID: PMC4046438 DOI: 10.1186/1471-2407-14-387] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Accepted: 05/22/2014] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Understanding the complex, multistep process of metastasis remains a major challenge in cancer research. Metastasis models can reveal insights in tumor development and progression and provide tools to test new intervention strategies. METHODS To develop a new cancer metastasis model, we used DU145 human prostate cancer cells and performed repeated rounds of orthotopic prostate injection and selection of subsequent lymph node metastases. Tumor growth, metastasis, cell migration and invasion were analyzed. Microarray analysis was used to identify cell migration- and cancer-related genes correlating with metastasis. Selected genes were silenced using siRNA, and their roles in cell migration and invasion were determined in transwell migration and Matrigel invasion assays. RESULTS Our in vivo cycling strategy created cell lines with dramatically increased tumorigenesis and increased ability to colonize lymph nodes (DU145LN1-LN4). Prostate tumor xenografts displayed increased vascularization, enlarged podoplanin-positive lymphatic vessels and invasive margins. Microarray analysis revealed gene expression profiles that correlated with metastatic potential. Using gene network analysis we selected 3 significantly upregulated cell movement and cancer related genes for further analysis: EPCAM (epithelial cell adhesion molecule), ITGB4 (integrin β4) and PLAU (urokinase-type plasminogen activator (uPA)). These genes all showed increased protein expression in the more metastatic DU145-LN4 cells compared to the parental DU145. SiRNA knockdown of EpCAM, integrin-β4 or uPA all significantly reduced cell migration in DU145-LN4 cells. In contrast, only uPA siRNA inhibited cell invasion into Matrigel. This role of uPA in cell invasion was confirmed using the uPA inhibitors, amiloride and UK122. CONCLUSIONS Our approach has identified genes required for the migration and invasion of metastatic tumor cells, and we propose that our new in vivo model system will be a powerful tool to interrogate the metastatic cascade in prostate cancer.
Collapse
|
14
|
Deng X, He G, Liu J, Luo F, Peng X, Tang S, Gao Z, Lin Q, Keller JM, Yang T, Keller ET. Recent advances in bone-targeted therapies of metastatic prostate cancer. Cancer Treat Rev 2014; 40:730-8. [PMID: 24767837 DOI: 10.1016/j.ctrv.2014.04.003] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 04/02/2014] [Accepted: 04/07/2014] [Indexed: 10/25/2022]
Abstract
Prostate cancer is one of the most common malignancies affecting men worldwide, with bone being the most common site of metastasis in patients that progress beyond organ confinement. Bone metastases are virtually incurable and result in significant disease morbidity and mortality. Bone provides a unique microenvironment whose local interactions with tumor cells offer novel targets for therapeutic interventions. Several attractive molecules or pathways have been identified as new potential therapeutic targets for bone metastases caused by metastatic castration-resistant prostate cancer. In this review, we present the recent advances in molecular targeted therapies for prostate cancer bone metastasis focusing on therapies that target the bone cells and the bone microenvironment. The therapies covered in this review include agents that inhibit bone resorption, agents that stimulate bone formation, and agents that target the bone matrix. Suggestions to devise more effective molecular targeted therapies are proposed. Hopefully, with better understanding of the biology of the disease and the development of more robust targeted therapies, the survival and quality of life of the affected individuals could be significantly improved.
Collapse
Affiliation(s)
- Xiyun Deng
- College of Medicine, Hunan Normal University, Changsha, Hunan 410013, China; Changsha Microworld Biotech Company, Changsha, Hunan 410004, China
| | - Guangchun He
- College of Medicine, Hunan Normal University, Changsha, Hunan 410013, China
| | - Junwen Liu
- National Engineering Laboratory for Rice and Byproduct In-Depth Processing, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Feijun Luo
- National Engineering Laboratory for Rice and Byproduct In-Depth Processing, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Xiaoning Peng
- College of Medicine, Hunan Normal University, Changsha, Hunan 410013, China
| | - Shigang Tang
- College of Medicine, Hunan Normal University, Changsha, Hunan 410013, China
| | - Zhiyong Gao
- College of Medicine, Hunan Normal University, Changsha, Hunan 410013, China
| | - Qinlu Lin
- National Engineering Laboratory for Rice and Byproduct In-Depth Processing, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Jill M Keller
- Department of Urology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Tao Yang
- National Engineering Laboratory for Rice and Byproduct In-Depth Processing, Central South University of Forestry and Technology, Changsha, Hunan 410004, China; Changsha Microworld Biotech Company, Changsha, Hunan 410004, China.
| | - Evan T Keller
- Department of Urology, University of Michigan, Ann Arbor, MI 48109, USA.
| |
Collapse
|
15
|
|
16
|
Regulation of epithelial plasticity by miR-424 and miR-200 in a new prostate cancer metastasis model. Sci Rep 2013; 3:3151. [PMID: 24193225 PMCID: PMC3818652 DOI: 10.1038/srep03151] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Accepted: 10/18/2013] [Indexed: 12/19/2022] Open
Abstract
Using an in vivo cycling strategy, we selected metastatic cancer cells from the lymph nodes (LN) of mice bearing orthotopic DU145 human prostate tumors. Repeated rounds of metastatic selection (LN1–LN4) progressively increased the epithelial phenotype, resulting in a new model of tumor cell mesenchymal-epithelial transition (MET). DU145-LN4 showed increased cell-cell adhesions, higher expression of multiple epithelial markers, such as E-cadherin, EpCAM and cytokeratin 18, and reduced expression of mesenchymal markers such as vimentin. The MET in DU145-LN4 cells was accompanied by increased expression of the miR-200 family, and antimiRs to miR-200c and miR-141 induced an EMT. MET also correlated with the loss of miR-424. Ectopic transient and stable miR-424 expression induced EMT, with reduced epithelial marker expression and increased cell scattering. Our model provides evidence for spontaneous MET in vivo. We show that this cellular plasticity can be mediated through the combined action of miR-424 and the miR-200 family.
Collapse
|
17
|
Dias SJ, Li K, Rimando AM, Dhar S, Mizuno CS, Penman AD, Levenson AS. Trimethoxy-resveratrol and piceatannol administered orally suppress and inhibit tumor formation and growth in prostate cancer xenografts. Prostate 2013; 73:1135-46. [PMID: 23657951 DOI: 10.1002/pros.22657] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Accepted: 01/30/2013] [Indexed: 12/18/2022]
Abstract
BACKGROUND Resveratrol (Res) is recognized as a promising cancer chemoprevention dietary polyphenol with antioxidative, anti-inflammatory, and anticancer properties. However, the role of its analogues in prostate cancer (PCa) chemoprevention is unknown. METHODS We synthesized several natural and synthetic analogues of Res and characterized their effects on PCa cells in vitro using a cell proliferation assay. A colony formation assay and in vitro validation of luciferase (Luc) activity was done for LNCaP-Luc cells that were consequently used for in vivo studies. The efficacy of Res, trimethoxy-resveratrol (3M-Res) and piceatannol (PIC) was studied in a subcutaneous (s.c.) model of PCa using oral gavage. Tumor progression was monitored by traditional caliper and bioluminescent imaging. The levels of cytokines in serum were examined by ELISA, and the levels of compounds in serum and tumor tissues were determined by gas chromatography-mass spectrometry. RESULTS We examined the anti-proliferative activities of Res/analogues in three PCa cell lines. We further compared the chemopreventive effects of oral Res, 3M-Res, and PIC in LNCaP-Luc-xenografts. We found that 2 weeks pretreatment with the compounds diminished cell colonization, reduced tumor volume, and decreased tumor growth in the xenografts. Both 3M-Res and PIC demonstrated higher potency in inhibiting tumor progression compared to Res. Notably, 3M-Res was the most active in inhibiting cell proliferation and suppressing colony formation, and its accumulation in both serum and tumor tissues was the highest. CONCLUSIONS Our findings offer strong pre-clinical evidence for the utilization of dietary stilbenes, particularly 3M-Res, as novel, potent, effective chemopreventive agents in PCa.
Collapse
Affiliation(s)
- Steven J Dias
- Cancer Institute, University of Mississippi Medical Center, Jackson, Mississippi 39216, USA
| | | | | | | | | | | | | |
Collapse
|
18
|
Abstract
Prostate cancer remains a significant health problem for men in the Western world. Although treatment modalities are available, these do not confer long-term benefit and are accompanied by deleterious side effects. Immunotherapy represents a valuable alternative to conventional treatments by inducing tumour-specific immune responses that control the growth of cancer cells. Sipuleucel-T is approved by the FDA as an immunotherapeutic agent for the treatment of patients with asymptomatic or minimally symptomatic castration-resistant prostate cancer (CRPC). Although this approval has raised cost-versus-benefit issues, it has provided proof of concept for the therapeutic potential of active immunotherapy approaches for metastatic CRPC. Numerous clinical studies have demonstrated clinical benefit using immunotherapy compared to traditional chemotherapy and several active immunotherapy approaches (at various developmental stages)have demonstrated the potential to change the face of prostate cancer treatment.
Collapse
|
19
|
Ahlqvist K, Saamarthy K, Syed Khaja AS, Bjartell A, Massoumi R. Expression of Id proteins is regulated by the Bcl-3 proto-oncogene in prostate cancer. Oncogene 2012; 32:1601-8. [PMID: 22580608 DOI: 10.1038/onc.2012.175] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
B-cell leukemia 3 (Bcl-3) is a member of the inhibitor of κB family, which regulates a wide range of biological processes by functioning as a transcriptional activator or as a repressor of target genes. As high levels of Bcl-3 expression and activation have been detected in different types of human cancer, Bcl-3 has been labeled a proto-oncogene. Our study uncovered a markedly upregulated Bcl-3 expression in human prostate cancer (PCa), where inflammatory cell infiltration was observed. Elevated Bcl-3 expression in PCa was dependent on the proinflammatory cytokine interleukin-6-mediated STAT3 activation. Microarray analyses, using Bcl-3 knockdown in PCa cells, identified the inhibitor of DNA-binding (Id) family of helix-loop-helix proteins as potential Bcl-3-regulated genes. Bcl-3 knockdown reduced the abundance of Id-1 and Id-2 proteins and boosted PCa cells to be more receptive to undergoing apoptosis following treatment with anticancer drug. Our data imply that inactivation of Bcl-3 may lead to sensitization of cancer cells to chemotherapeutic drug-induced apoptosis, thus suggesting a potential therapeutic strategy in PCa treatment.
Collapse
Affiliation(s)
- K Ahlqvist
- Center for Molecular Tumor Pathology, Department of Laboratory Medicine, Lund University, Skåne University Hospital, Malmö, Sweden
| | | | | | | | | |
Collapse
|