1
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Kuo YY, Huo C, Li CY, Chuu CP. Caffeic acid phenethyl ester suppresses the expression of androgen receptor variant 7 via inhibition of CDK1 and AKT. Cancer Gene Ther 2024; 31:807-815. [PMID: 38480977 DOI: 10.1038/s41417-024-00753-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 02/22/2024] [Accepted: 02/26/2024] [Indexed: 06/23/2024]
Abstract
Androgen receptor (AR) splice variant 7 (AR-V7) is capable to enter nucleus and activate downstream signaling without ligand. AR-V7 assists the tumor growth, cancer metastasis, cancer stemness, and the evolvement of therapy-resistant prostate cancer (PCa). We discovered that caffeic acid phenethyl ester (CAPE) can repress the expression and downstream signaling of AR-V7 in PCa cells. CAPE blocked the gene transcription, nuclear localization, and protein abundance of AR-V7. CAPE inhibited the expression of U2AF65, SF2 and hnRNPF, which were splicing factors for AR-V7 intron. Additionally, CAPE decreased protein stability of AR-V7 and enhanced the proteosome-degradation of AR-V7. We observed that CDK1 and AKT regulated the expression and stability of AR-V7 via phosphorylation of Ser81 and Ser213, respectively. CAPE decreased the expression of CDK1 and AKT. Overexpression of CDK1 restored the abundance of AR-V7 in CAPE-treated PCa cells. Overexpression of AR-V7, AKT or CDK1 rescued the proliferation of PCa cells under CAPE treatment. Intraperitoneal injection of 10 mg/kg CAPE retarded the growth of 22Rv1 xenografts in nude mice and suppressed the protein levels of AR-V7, CDK1 and AKT in 22Rv1 xenografts. Our study provided the rationale of applying CAPE for inhibition of AR-V7 in prostate tumors.
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Affiliation(s)
- Ying-Yu Kuo
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli County, Taiwan
| | - Chieh Huo
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli County, Taiwan
| | - Chia-Yang Li
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Medical Research, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chih-Pin Chuu
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli County, Taiwan.
- PhD Program for Aging and Graduate Institute of Basic Medical Science, China Medical University, Taichung City, Taiwan.
- Biotechnology Center, National Chung Hsing University, Taichung City, Taiwan.
- Department of Life Sciences, National Central University, Taoyuan City, Taiwan.
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2
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Li L, Zheng J, Oltean S. Regulation of Epithelial-Mesenchymal Transitions by Alternative Splicing: Potential New Area for Cancer Therapeutics. Genes (Basel) 2023; 14:2001. [PMID: 38002944 PMCID: PMC10671305 DOI: 10.3390/genes14112001] [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: 09/14/2023] [Revised: 10/23/2023] [Accepted: 10/25/2023] [Indexed: 11/26/2023] Open
Abstract
The epithelial-mesenchymal transition (EMT) is a complicated biological process in which cells with epithelial phenotype are transformed into mesenchymal cells with loss of cell polarity and cell-cell adhesion and gain of the ability to migrate. EMT and the reverse mesenchymal-epithelial transitions (METs) are present during cancer progression and metastasis. Using the dynamic switch between EMT and MET, tumour cells can migrate to neighbouring organs or metastasize in the distance and develop resistance to traditional chemotherapy and targeted drug treatments. Growing evidence shows that reversing or inhibiting EMT may be an advantageous approach for suppressing the migration of tumour cells or distant metastasis. Among different levels of modulation of EMT, alternative splicing (AS) plays an important role. An in-depth understanding of the role of AS and EMT in cancer is not only helpful to better understand the occurrence and regulation of EMT in cancer progression, but also may provide new therapeutic strategies. This review will present and discuss various splice variants and splicing factors that have been shown to play a crucial role in EMT.
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Affiliation(s)
| | | | - Sebastian Oltean
- Department of Clinical and Biomedical Sciences, Faculty of Health and Life Sciences, University of Exeter Medical School, Exeter EX1 2LU, UK; (L.L.)
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3
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Koukourakis IM, Platoni K, Kouloulias V, Arelaki S, Zygogianni A. Prostate Cancer Stem Cells: Biology and Treatment Implications. Int J Mol Sci 2023; 24:14890. [PMID: 37834336 PMCID: PMC10573523 DOI: 10.3390/ijms241914890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/30/2023] [Accepted: 10/01/2023] [Indexed: 10/15/2023] Open
Abstract
Stem cells differentiate into mature organ/tissue-specific cells at a steady pace under normal conditions, but their growth can be accelerated during the process of tissue healing or in the context of certain diseases. It is postulated that the proliferation and growth of carcinomas are sustained by the presence of a vital cellular compartment resembling stem cells residing in normal tissues: 'stem-like cancer cells' or cancer stem cells (CSCs). Mutations in prostate stem cells can lead to the formation of prostate cancer. Prostate CSCs (PCSCs) have been identified and partially characterized. These express surface markers include CD44, CD133, integrin α2β1, and pluripotency factors like OCT4, NANOG, and SOX2. Several signaling pathways are also over-activated, including Notch, PTEN/Akt/PI3K, RAS-RAF-MEK-ERK and HH. Moreover, PCSCs appear to induce resistance to radiotherapy and chemotherapy, while their presence has been linked to aggressive cancer behavior and higher relapse rates. The development of treatment policies to target PCSCs in tumors is appealing as radiotherapy and chemotherapy, through cancer cell killing, trigger tumor repopulation via activated stem cells. Thus, blocking this reactive stem cell mobilization may facilitate a positive outcome through cytotoxic treatment.
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Affiliation(s)
- Ioannis M. Koukourakis
- Radiation Oncology Unit, 1st Department of Radiology, Aretaieion Hospital, School of Medicine, National and Kapodistrian University of Athens (NKUOA), 11528 Athens, Greece; (I.M.K.); (A.Z.)
| | - Kalliopi Platoni
- Medical Physics Unit, 2nd Department of Radiology, Attikon University Hospital, School of Medicine, National and Kapodistrian University of Athens (NKUOA), 12462 Athens, Greece
| | - Vassilis Kouloulias
- Radiation Oncology Unit, 2nd Department of Radiology, School of Medicine, National and Kapodistrian University of Athens (NKUOA), 12462 Athens, Greece;
| | - Stella Arelaki
- Translational Functional Cancer Genomics, National Center for Tumor Diseases, German Cancer Research Center, 69120 Heidelberg, Germany;
| | - Anna Zygogianni
- Radiation Oncology Unit, 1st Department of Radiology, Aretaieion Hospital, School of Medicine, National and Kapodistrian University of Athens (NKUOA), 11528 Athens, Greece; (I.M.K.); (A.Z.)
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4
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Biernacka KM, Barker R, Sewell A, Bahl A, Perks CM. A role for androgen receptor variant 7 in sensitivity to therapy: Involvement of IGFBP-2 and FOXA1. Transl Oncol 2023; 34:101698. [PMID: 37307644 PMCID: PMC10276180 DOI: 10.1016/j.tranon.2023.101698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/10/2023] [Accepted: 05/21/2023] [Indexed: 06/14/2023] Open
Abstract
Prostate cancer (PCa) is one of the leading causes of cancer-related deaths in men. Localised PCa can be treated effectively, but most patients relapse/progress to more aggressive disease. One possible mechanism underlying this progression is alternative splicing of the androgen receptor, with AR variant 7(ARV7) considered to play a major role. Using viability assays, we confirmed that ARV7-positive PCa cells were less sensitive to treatment with cabazitaxel and an anti-androgen-enzalutamide. Also, using live-holographic imaging, we showed that PCa cells with ARV7 exhibited an increased rate of cell division, proliferation, and motility, which could potentially contribute to a more aggressive phenotype. Furthermore, protein analysis demonstrated that ARV7 knock-down was associated with a decrease in insulin-like growth factor-2 (IGFBP-2) and forkhead box protein A1(FOXA1). This correlation was confirmed in-vivo using PCa tissue samples. Spearman rank correlation analysis showed significant positive associations between ARV7 and IGFBP-2 or FOXA1 in tissue from patients with PCa. This association was not present with the AR. These data suggest an interplay of FOXA1 and IGFBP-2 with ARV7-mediated acquisition of an aggressive prostate cancer phenotype.
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Affiliation(s)
- K M Biernacka
- Cancer Endocrinology Group, Translational Health Sciences, University of Bristol Southmead Hospital, BS10 5NB, Bristol, UK
| | - R Barker
- Cancer Endocrinology Group, Translational Health Sciences, University of Bristol Southmead Hospital, BS10 5NB, Bristol, UK
| | - A Sewell
- Department of Cellular Pathology, North Bristol NHS Trust, Southmead Hospital, Bristol, UK
| | - A Bahl
- Bristol Haematology and Oncology Centre, Department of Clinical Oncology, University Hospitals Bristol, Bristol BS2 8ED, UK
| | - C M Perks
- Cancer Endocrinology Group, Translational Health Sciences, University of Bristol Southmead Hospital, BS10 5NB, Bristol, UK.
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5
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Thomas E, Thankan RS, Purushottamachar P, Guo J, Parise RA, Beumer JH, Njar VCO. Murine toxicology and pharmacokinetics of lead next generation galeterone analog, VNPP433-3β. Steroids 2023; 192:109184. [PMID: 36702363 PMCID: PMC9998351 DOI: 10.1016/j.steroids.2023.109184] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/09/2023] [Accepted: 01/21/2023] [Indexed: 01/25/2023]
Abstract
VNPP433-3β (compound 2, (3β-(1H-imidazole-1-yl)-17-(1H-benzimidazole-1-yl)-androsta-5,16-diene), a multitarget anticancer agent has emerged as our lead next generation galeterone analogs (NGGA). Compound 2 is currently in development as potential new therapeutic for prostate and pancreatic cancers. The preliminary toxicity study reveals that the compound 2 was better tolerated by the normal male CD-1 mice than the male Nude mice. The maximum tolerated dose (MTD) in the Nude mice was estimated to be between 25 < 50 mg/kg. After oral dosing of compound 2 to male and female rats, the plasma concentration versus time curves were very consistent between animals and the AUClast increased with dose. Many plasmas concentration versus time curves profiles were nearly flat over 24 hr., suggesting extended absorption from the GI tract. Consequently, reliable values for half-life and AUCinf were not determined. Calculated oral bioavailability (using oral AUClast and excluding the outlier IV animal) ranged from 32 to 47 %. This should be considered a minimum value since the contribution to true AUC beyond 24 hr. is clearly not zero. Clearly, these toxicology and pharmacokinetics parameters pave the way for understanding the anticancer pharmacological actions and provide a meaningful basis for further preclinical development and eventual clinical development.
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Affiliation(s)
- Elizabeth Thomas
- Department of Pharmacology, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA
| | - Retheesh S Thankan
- Department of Pharmacology, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; Isoprene Pharmaceuticals, Inc., 801 W. Baltimore Street, Suite 502J, Baltimore, MD 21201, USA
| | - Puranik Purushottamachar
- Department of Pharmacology, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA
| | - Jianxia Guo
- Cancer Therapeutics Program, UPMC Hillman Cancer Center, Pittsburgh, PA 15213, USA
| | - Robert A Parise
- Cancer Therapeutics Program, UPMC Hillman Cancer Center, Pittsburgh, PA 15213, USA
| | - Jan H Beumer
- Cancer Therapeutics Program, UPMC Hillman Cancer Center, Pittsburgh, PA 15213, USA; Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, PA 15261, USA; Division of Hematology-Oncology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.
| | - Vincent C O Njar
- Department of Pharmacology, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; Isoprene Pharmaceuticals, Inc., 801 W. Baltimore Street, Suite 502J, Baltimore, MD 21201, USA; Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA.
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6
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Jindal R, Nanda A, Pillai M, Ware KE, Singh D, Sehgal M, Armstrong AJ, Somarelli JA, Jolly MK. Emergent dynamics of underlying regulatory network links EMT and androgen receptor-dependent resistance in prostate cancer. Comput Struct Biotechnol J 2023; 21:1498-1509. [PMID: 36851919 PMCID: PMC9957767 DOI: 10.1016/j.csbj.2023.01.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/23/2023] [Accepted: 01/23/2023] [Indexed: 02/10/2023] Open
Abstract
Advanced prostate cancer patients initially respond to hormone therapy, be it in the form of androgen deprivation therapy or second-generation hormone therapies, such as abiraterone acetate or enzalutamide. However, most men with prostate cancer eventually develop hormone therapy resistance. This resistance can arise through multiple mechanisms, such as through genetic mutations, epigenetic mechanisms, or through non-genetic pathways, such as lineage plasticity along epithelial-mesenchymal or neuroendocrine-like axes. These mechanisms of hormone therapy resistance often co-exist within a single patient's tumor and can overlap within a single cell. There exists a growing need to better understand how phenotypic heterogeneity and plasticity results from emergent dynamics of the regulatory networks governing androgen independence. Here, we investigated the dynamics of a regulatory network connecting the drivers of androgen receptor (AR) splice variant-mediated androgen independence and those of epithelial-mesenchymal transition. Model simulations for this network revealed four possible phenotypes: epithelial-sensitive (ES), epithelial-resistant (ER), mesenchymal-resistant (MR) and mesenchymal-sensitive (MS), with the latter phenotype occurring rarely. We observed that well-coordinated "teams" of regulators working antagonistically within the network enable these phenotypes. These model predictions are supported by multiple transcriptomic datasets both at single-cell and bulk levels, including in vitro EMT induction models and clinical samples. Further, our simulations reveal spontaneous stochastic switching between the ES and MR states. Addition of the immune checkpoint molecule, PD-L1, to the network was able to capture the interactions between AR, PD-L1, and the mesenchymal marker SNAIL, which was also confirmed through quantitative experiments. This systems-level understanding of the driver of androgen independence and EMT could aid in understanding non-genetic transitions and progression of such cancers and help in identifying novel therapeutic strategies or targets.
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Affiliation(s)
- Rashi Jindal
- Center for BioSystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India.,Undergraduate Programme, Indian Institute of Science, Bangalore 560012, India
| | - Abheepsa Nanda
- Center for BioSystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India.,Undergraduate Programme, Indian Institute of Science, Bangalore 560012, India
| | - Maalavika Pillai
- Center for BioSystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India.,Undergraduate Programme, Indian Institute of Science, Bangalore 560012, India
| | - Kathryn E Ware
- Department of Medicine, Duke Cancer Institute Center for Prostate and Urologic Cancers, Duke University, Durham, NC 27710, USA
| | - Divyoj Singh
- Center for BioSystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India.,Undergraduate Programme, Indian Institute of Science, Bangalore 560012, India
| | - Manas Sehgal
- Center for BioSystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Andrew J Armstrong
- Department of Medicine, Duke Cancer Institute Center for Prostate and Urologic Cancers, Duke University, Durham, NC 27710, USA.,Department of Surgery, Duke University, Durham, NC 27710, USA.,Department of Pharmacology and Cancer Biology, Duke University, Durham, NC 27710, USA
| | - Jason A Somarelli
- Department of Medicine, Duke Cancer Institute Center for Prostate and Urologic Cancers, Duke University, Durham, NC 27710, USA
| | - Mohit Kumar Jolly
- Center for BioSystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India
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7
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Masud N, Aldahish A, Iczkowski KA, Kale A, Shah GV. Zinc finger protein‑like 1 is a novel neuroendocrine biomarker for prostate cancer. Int J Oncol 2023; 62:38. [PMID: 36799165 PMCID: PMC9937688 DOI: 10.3892/ijo.2023.5486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/26/2022] [Indexed: 02/08/2023] Open
Abstract
Prostate‑derived calcitonin (CT) and its receptor induce tumorigenicity and increase metastatic potential of prostate cancer (PC). CT‑inducible genes in human prostate were identified by subtraction hybridization. Among these genes, zinc finger protein like 1 (ZFPL1) protein was interesting since it was abundantly expressed in malignant prostates but was almost absent in benign prostates. ZFPL1 expression was upregulated by CT and androgens, and ZFPL1 protein was secreted by prostate tumor cells through exosomal secretion. Serum levels of ZFPL1 in cancer patients were at least 4‑fold higher than those in the sera of cancer‑free individuals. Cell biology of ZFPL1 suggests its localization in Golgi bodies and exosomes, and its colocalization with chromogranin A and CD44. These results suggested that ZFPL1 is secreted by tumor cells of neuroendocrine (NE)/stem cell phenotype. The knockdown of endogenous ZFPL1 in (PC) cells led to a remarkable decrease in cell proliferation, and invasion while increasing their apoptosis. As expected, the overexpression of ZFPL1 in prostate cells had an opposite effect on these functions. The knockdown of ZFPL1 in PC cells also decreased Akt phosphorylation, suggesting the actions of ZFPL1 may be mediated through the PI3K‑Akt pathway. Moreover, the present results revealed that ZFPL1 is released by tumors cells of NE or androgen‑independent phenotype and its serum levels are significantly higher in cancer patients, suggesting that it may serve as a blood‑based non‑invasive biomarker of aggressive PC.
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Affiliation(s)
- Neshat Masud
- Pharmacology, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71209, USA
| | - Afaf Aldahish
- Pharmacology, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71209, USA
- Department of Pharmacology and Toxicology, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia
| | - Kenneth A. Iczkowski
- Pathology and Laboratory Medicine, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Ajay Kale
- Pharmacology, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71209, USA
| | - Girish V. Shah
- Pharmacology, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71209, USA
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8
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Racial Differences in Androgen Receptor (AR) and AR Splice Variants (AR-SVs) Expression in Treatment-Naïve Androgen-Dependent Prostate Cancer. Biomedicines 2023; 11:biomedicines11030648. [PMID: 36979627 PMCID: PMC10044992 DOI: 10.3390/biomedicines11030648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/07/2023] [Accepted: 02/13/2023] [Indexed: 02/24/2023] Open
Abstract
Androgen receptor splice variants (AR-SVs) contribute to the aggressive growth of castration-resistant prostate cancer (CRPC). AR-SVs, including AR-V7, are expressed in ~30% of CRPC, but minimally in treatment-naïve primary prostate cancer (PCa). Compared to Caucasian American (CA) men, African American (AA) men are more likely to be diagnosed with aggressive/potentially lethal PCa and have shorter disease-free survival. Expression of a truncated AR in an aggressively growing patient-derived xenograft developed with a primary PCa specimen from an AA patient led us to hypothesize that the expression of AR-SVs could be an indicator of aggressive growth both in PCa progression and at the CRPC stage in AA men. Tissue microarrays (TMAs) were created from formalin-fixed paraffin-embedded (FFPE) prostatectomy tumor blocks from 118 AA and 115 CA treatment-naïve PCa patients. TMAs were stained with AR-V7-speicifc antibody and with antibodies binding to the N-terminus domain (NTD) and ligand-binding domain (LBD) of the AR. Since over 20 AR-SVs have been identified, and most AR-SVs do not as yet have a specific antibody, we considered a 2.0-fold or greater difference in the NTD vs. LBD staining as indication of potential AR-SV expression. Two AA, but no CA, patient tumors stained positively for AR-V7. AR staining with NTD and LBD antibodies was robust in most patients, with 21% of patients staining at least 2-fold more for NTD than LBD, indicating that AR-SVs other than AR-V7 are expressed in primary treatment-naïve PCa. About 24% of the patients were AR-negative, and race differences in AR expression were not statistically significant. These results indicate that AR-SVs are not restricted to CRPC, but also are expressed in primary PCa at higher rate than previously reported. Future investigation of the relative expression of NTD vs. LBD AR-SVs could guide the use of newly developed treatments targeting the NTD earlier in the treatment paradigm.
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9
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Duan L, Chen YA, Liang Y, Chen Z, Lu J, Fang Y, Cao J, Lu J, Zhao H, Pong RC, Hernandez E, Kapur P, Tran TAT, Smith T, Martinez ED, Ahn JM, Hsieh JT, Luo JH, Liu ZP. Therapeutic targeting of histone lysine demethylase KDM4B blocks the growth of castration-resistant prostate cancer. Biomed Pharmacother 2023; 158:114077. [PMID: 36495660 PMCID: PMC10926092 DOI: 10.1016/j.biopha.2022.114077] [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: 10/13/2022] [Revised: 11/24/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
Epigenetics is an emerging mechanism for tumorigenesis. Treatment that targets epigenetic regulators is becoming an attractive strategy for cancer therapy. The role of epigenetic therapy in prostate cancer (PCa) remains elusive. Previously we demonstrated that upregulation of histone lysine demethylase KDM4B correlated with the appearance of castration resistant prostate cancer (CRPC) and identified a small molecular inhibitor of KDM4B, B3. In this study, we further investigated the role of KDM4B in promoting PCa progression and tested the efficacy of B3 using clinically relevant PCa models including PCa cell line LNCaP and 22Rv1 and xenografts derived from these cell lines. In loss and gain-functional studies of KDM4B in PCa cells, we found that overexpression of KDM4B in LNCaP cells enhanced its tumorigenicity whereas knockdown of KDM4B in 22Rv1 cells reduced tumor growth in castrated mice. B3 suppressed the growth of 22Rv1 xenografts and sensitized tumor to anti-androgen receptor (AR) antagonist enzalutamide inhibition. B3 also inhibited 22Rv1 tumor growth synergistically with rapamycin, leading to cell apoptosis. Comparative transcriptomic analysis performed on KDM4B knockdown and B3-treated 22Rv1 cells revealed that B3 inhibited both H3K9me3 and H3K27me3 demethylase activities. Our studies establish KDM4B as a target for CRPC and B3 as a potential therapeutic agent. B3 as monotherapy or in combination with other anti-PCa therapeutics offers proof of principle for the clinical translation of epigenetic therapy targeting KDMs for CRPC patients.
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Affiliation(s)
- Lingling Duan
- Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Yu-An Chen
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Yanping Liang
- Department of Urology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China
| | - Zhenhua Chen
- Department of Urology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China
| | - Jun Lu
- Department of Urology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China
| | - Yong Fang
- Department of Urology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China
| | - Jiazheng Cao
- Department of Urology, Jiangmen Hospital, Sun Yat-Sen University, Jiangmen 529030, China
| | - Jian Lu
- Department of Urology, Jiangmen Hospital, Sun Yat-Sen University, Jiangmen 529030, China
| | - Hongwei Zhao
- Department of Urology, Affiliated Yantai Yuhuangding Hospital, Qingdao University Medical College, Yantai 264000, China
| | - Rey-Chen Pong
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Elizabeth Hernandez
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Payal Kapur
- Department of Pathology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Tram Anh T Tran
- Department of Pharmacology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Tristan Smith
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, TX 75080, USA
| | - Elisabeth D Martinez
- Department of Pharmacology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jung-Mo Ahn
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, TX 75080, USA
| | - Jer-Tsong Hsieh
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jun-Hang Luo
- Department of Urology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Zhi-Ping Liu
- Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX 75390, USA; Department of Molecular Biology, UT Southwestern Medical Center, Dallas, TX 75390, USA.
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10
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Constitutively Active Androgen Receptor in Hepatocellular Carcinoma. Int J Mol Sci 2022; 23:ijms232213768. [PMID: 36430245 PMCID: PMC9699340 DOI: 10.3390/ijms232213768] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/04/2022] [Accepted: 11/06/2022] [Indexed: 11/11/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the predominant type of liver cancer and a leading cause of cancer-related death globally. It is also a sexually dimorphic disease with a male predominance both in HCC and in its precursors, non-alcoholic fatty liver disease (NAFLD)/non-alcoholic steatohepatitis (NASH). The role of the androgen receptor (AR) in HCC has been well documented; however, AR-targeted therapies have failed to demonstrate efficacy in HCC. Building upon understandings of AR in prostate cancer (PCa), this review examines the role of AR in HCC, non-androgen-mediated mechanisms of induced AR expression, the existence of AR splice variants (AR-SV) in HCC and concludes by surveying current AR-targeted therapeutic approaches in PCa that show potential for efficacy in HCC in light of AR-SV expression.
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11
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Derderian S, Vesval Q, Wissing MD, Hamel L, Côté N, Vanhuyse M, Ferrario C, Bladou F, Aprikian A, Chevalier S. Liquid biopsy-based targeted gene screening highlights tumor cell subtypes in patients with advanced prostate cancer. Clin Transl Sci 2022; 15:2597-2612. [PMID: 36172886 PMCID: PMC9652435 DOI: 10.1111/cts.13372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/23/2022] [Accepted: 07/08/2022] [Indexed: 01/25/2023] Open
Abstract
Prostate cancer (PCa) clinical heterogeneity underscores tumor heterogeneity, which may be best defined by cell subtypes. To test if cell subtypes contributing to progression can be assessed noninvasively, we investigated whether 14 genes representing luminal, neuroendocrine, and stem cells are detectable in whole blood RNA of patients with advanced PCa. For each gene, reverse transcription quantitative polymerase chain reaction assays were first validated using RNA from PCa cell lines, and their traceability in blood was assessed in cell spiking experiments. These were next tested in blood RNA of 40 advanced PCa cases and 40 healthy controls. Expression in controls, which was low or negative, was used to define stringent thresholds for gene overexpression in patients to account for normal variation in white blood cells. Thirty-five of 40 patients overexpressed at least one gene. Patients with more genes overexpressed had a higher risk of death (hazard ratio 1.42, range 1.12-1.77). Progression on androgen receptor inhibitors was associated with overexpression of stem (odds ratio [OR] 7.74, range 1.68-35.61) and neuroendocrine (OR 13.10, range 1.24-142.34) genes, while luminal genes were associated with taxanes (OR 2.7, range 1.07-6.82). Analyses in PCa transcriptomic datasets revealed that this gene panel was most prominent in metastases of advanced disease, with diversity among patients. Collectively, these findings support the contribution of the prostate cell subtypes to disease progression. Cell-subtype specific genes are traceable in blood RNA of patients with advanced PCa and are associated with clinically relevant end points. This opens the door to minimally invasive liquid biopsies for better management of this deadly disease.
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Affiliation(s)
- Seta Derderian
- Urologic Oncology Research Group, Cancer Research ProgramResearch Institute (RI)‐McGill University Health Center (MUHC)MontrealCanada,Department of Surgery (Urology Division)MUHC and McGill UniversityMontrealCanada
| | - Quentin Vesval
- Urologic Oncology Research Group, Cancer Research ProgramResearch Institute (RI)‐McGill University Health Center (MUHC)MontrealCanada,Department of UrologyCentre Hospitalier Régional et Universitaire (CHRU) de RennesRennesFrance
| | - Michel D. Wissing
- Urologic Oncology Research Group, Cancer Research ProgramResearch Institute (RI)‐McGill University Health Center (MUHC)MontrealCanada,Department of OncologyMUHC and McGill UniversityMontrealCanada
| | - Lucie Hamel
- Urologic Oncology Research Group, Cancer Research ProgramResearch Institute (RI)‐McGill University Health Center (MUHC)MontrealCanada
| | - Nathalie Côté
- Urologic Oncology Research Group, Cancer Research ProgramResearch Institute (RI)‐McGill University Health Center (MUHC)MontrealCanada
| | - Marie Vanhuyse
- Department of OncologyMUHC and McGill UniversityMontrealCanada
| | - Cristiano Ferrario
- Department of OncologyJewish General Hospital (JGH) and McGill UniversityMontrealCanada
| | - Franck Bladou
- Department of UrologyCentre Hospitalier Universitaire de BordeauxBordeauxFrance
| | - Armen Aprikian
- Urologic Oncology Research Group, Cancer Research ProgramResearch Institute (RI)‐McGill University Health Center (MUHC)MontrealCanada,Department of Surgery (Urology Division)MUHC and McGill UniversityMontrealCanada,Department of OncologyMUHC and McGill UniversityMontrealCanada
| | - Simone Chevalier
- Urologic Oncology Research Group, Cancer Research ProgramResearch Institute (RI)‐McGill University Health Center (MUHC)MontrealCanada,Department of Surgery (Urology Division)MUHC and McGill UniversityMontrealCanada,Department of OncologyMUHC and McGill UniversityMontrealCanada,Department of MedicineMcGill UniversityMontrealCanada
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12
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Stem Cells as Target for Prostate cancer Therapy: Opportunities and Challenges. Stem Cell Rev Rep 2022; 18:2833-2851. [PMID: 35951166 DOI: 10.1007/s12015-022-10437-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/24/2022] [Indexed: 10/15/2022]
Abstract
Cancer stem cells (CSCs) and cells in a cancer stem cell-like (CSCL) state have proven to be responsible for tumor initiation, growth, and relapse in Prostate Cancer (PCa) and other cancers; therefore, new strategies are being developed to target such cellular populations. TLR3 activation-based immunotherapy using Polyinosinic:Polycytidylic acid (PIC) has been proposed to be used as a concomitant strategy to first-line treatment. This strategy is based on the induction of apoptosis and an inflammatory response in tumor cells. In combination with retinoids like 9cRA, this treatment can induce CSCs differentiation and apoptosis. A limitation in the use of this combination is the common decreased expression of TLR3 and its main positive regulator p53. observed in many patients suffering of different cancer types such as PCa. Importantly, human exposure to certain toxicants, such as iAs, not only has proven to enrich CSCs population in an in vitro model of human epithelial prostate cells, but additionally, it can also lead to a decreased p53, TLR3 and RA receptor (RARβ), expression/activation and thus hinder this treatment efficacy. Therefore, here we point out the relevance of evaluating the TLR3 and P53 status in PCa patients before starting an immunotherapy based on the use of PIC +9cRA to determine whether they will be responsive to treatment. Additionally, the use of strategies to overcome the lower TLR3, RARβ or p53 expression in PCa patients, like the inclusion of drugs that increase p53 expression, is encouraged, to potentiate the use of PIC+RA based immunotherapy in these patients.
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13
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Phloretin in Benign Prostate Hyperplasia and Prostate Cancer: A Contemporary Systematic Review. LIFE (BASEL, SWITZERLAND) 2022; 12:life12071029. [PMID: 35888117 PMCID: PMC9322491 DOI: 10.3390/life12071029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/02/2022] [Accepted: 07/09/2022] [Indexed: 11/16/2022]
Abstract
Currently, medication for benign prostate hyperplasia (BPH) and prostate cancer (PCa) are mainly based on modulating the hormone and nervous systems. However, side effects often affect patients, and might decrease their commitment to continuing the medication and lower their quality of life. Some studies have indicated that chronic inflammation might be the cause of BPH and PCa. Based on this hypothesis, the effect of phloretin, a potent anti-inflammatory and anti-oxidative flavonoid, has been researched since 2010. Results from animal and in-vitro studies, obtained from databases, also indicate that the use of phloretin in treating BPH and PCa is promising. Due to its effect on inflammatory cytokines, apoptosis or anti-apoptosis, reactive oxygen species, anti-oxidant enzymes and oxidative stress, phloretin is worthy of further study in human clinical trials regarding safety and effective dosages.
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14
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Wolf I, Gratzke C, Wolf P. Prostate Cancer Stem Cells: Clinical Aspects and Targeted Therapies. Front Oncol 2022; 12:935715. [PMID: 35875084 PMCID: PMC9304860 DOI: 10.3389/fonc.2022.935715] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 06/13/2022] [Indexed: 11/13/2022] Open
Abstract
Despite decades of research and successful improvements in diagnosis and therapy, prostate cancer (PC) remains a major challenge. In recent years, it has become clear that PC stem cells (PCSCs) are the driving force in tumorigenesis, relapse, metastasis, and therapeutic resistance of PC. In this minireview, we discuss the impact of PCSCs in the clinical practice. Moreover, new therapeutic approaches to combat PCSCs are presented with the aim to achieve an improved outcome for patients with PC.
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Affiliation(s)
- Isis Wolf
- Department of Urology, Medical Center-University of Freiburg, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christian Gratzke
- Department of Urology, Medical Center-University of Freiburg, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Philipp Wolf
- Department of Urology, Medical Center-University of Freiburg, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
- *Correspondence: Philipp Wolf,
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15
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Lee J, Troike K, Fodor R, Lathia JD. Unexplored Functions of Sex Hormones in Glioblastoma Cancer Stem Cells. Endocrinology 2022; 163:bqac002. [PMID: 35023543 PMCID: PMC8807164 DOI: 10.1210/endocr/bqac002] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Indexed: 01/14/2023]
Abstract
Biological sex impacts a wide array of molecular and cellular functions that impact organismal development and can influence disease trajectory in a variety of pathophysiological states. In nonreproductive cancers, epidemiological sex differences have been observed in a series of tumors, and recent work has identified previously unappreciated sex differences in molecular genetics and immune response. However, the extent of these sex differences in terms of drivers of tumor growth and therapeutic response is less clear. In glioblastoma (GBM), the most common primary malignant brain tumor, there is a male bias in incidence and outcome, and key genetic and epigenetic differences, as well as differences in immune response driven by immune-suppressive myeloid populations, have recently been revealed. GBM is a prototypic tumor in which cellular heterogeneity is driven by populations of therapeutically resistant cancer stem cells (CSCs) that underlie tumor growth and recurrence. There is emerging evidence that GBM CSCs may show a sex difference, with male tumor cells showing enhanced self-renewal, but how sex differences impact CSC function is not clear. In this mini-review, we focus on how sex hormones may impact CSCs in GBM and implications for other cancers with a pronounced CSC population. We also explore opportunities to leverage new models to better understand the contribution of sex hormones vs sex chromosomes to CSC function. With the rising interest in sex differences in cancer, there is an immediate need to understand the extent to which sex differences impact tumor growth, including effects on CSC function.
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Affiliation(s)
- Juyeun Lee
- Department of Cardiovascular & Metabolic Sciences, Lerner Research Institute, Cleveland Clinic
| | - Katie Troike
- Department of Cardiovascular & Metabolic Sciences, Lerner Research Institute, Cleveland Clinic
- Cleveland Clinic Lerner College of Medicine of Case Western Reserve University
| | - R’ay Fodor
- Cleveland Clinic Lerner College of Medicine of Case Western Reserve University
| | - Justin D Lathia
- Department of Cardiovascular & Metabolic Sciences, Lerner Research Institute, Cleveland Clinic
- Cleveland Clinic Lerner College of Medicine of Case Western Reserve University
- Rose Ella Burkhardt Brain Tumor and Neuro-Oncology Center, Cleveland Clinic
- Case Comprehensive Cancer Center
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16
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Erdmann É, Ould Madi Berthélémy P, Cottard F, Angel CZ, Schreyer E, Ye T, Morlet B, Negroni L, Kieffer B, Céraline J. Androgen receptor-mediated transcriptional repression targets cell plasticity in prostate cancer. Mol Oncol 2021; 16:2518-2536. [PMID: 34919781 PMCID: PMC9462842 DOI: 10.1002/1878-0261.13164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 11/16/2021] [Accepted: 12/15/2021] [Indexed: 11/24/2022] Open
Abstract
Androgen receptor (AR) signaling remains the key therapeutic target in the management of hormone‐naïve‐advanced prostate cancer (PCa) and castration‐resistant PCa (CRPC). Recently, landmark molecular features have been reported for CRPC, including the expression of constitutively active AR variants that lack the ligand‐binding domain. Besides their role in CRPC, AR variants lead to the expression of genes involved in tumor progression. However, little is known about the specificity of their mode of action compared with that of wild‐type AR (AR‐WT). We performed AR transcriptome analyses in an androgen‐dependent PCa cell line as well as cross‐analyses with publicly available RNA‐seq datasets and established that transcriptional repression capacity that was marked for AR‐WT was pathologically lost by AR variants. Functional enrichment analyses allowed us to associate AR‐WT repressive function to a panel of genes involved in cell adhesion and epithelial‐to‐mesenchymal transition. So, we postulate that a less documented AR‐WT normal function in prostate epithelial cells could be the repression of a panel of genes linked to cell plasticity and that this repressive function could be pathologically abrogated by AR variants in PCa.
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Affiliation(s)
- Éva Erdmann
- CNRS, UMR 7104, INSERM U1258 - IGBMC - University de Strasbourg, France
| | | | - Félicie Cottard
- University of Freiburg - Albert - Ludwigs - Universität Freiburg, Germany
| | | | - Edwige Schreyer
- CNRS, UMR 7104, INSERM U1258 - IGBMC - University de Strasbourg, France
| | - Tao Ye
- CNRS, UMR 7104, INSERM U1258 - IGBMC - University de Strasbourg, France
| | - Bastien Morlet
- CNRS, UMR 7104, INSERM U1258 - IGBMC - University de Strasbourg, France
| | - Luc Negroni
- CNRS, UMR 7104, INSERM U1258 - IGBMC - University de Strasbourg, France
| | - Bruno Kieffer
- CNRS, UMR 7104, INSERM U1258 - IGBMC - University de Strasbourg, France
| | - Jocelyn Céraline
- CNRS, UMR 7104, INSERM U1258 - IGBMC - University de Strasbourg, France.,Institut de Cancérologie de Strasbourg Europe (ICANS), Hôpitaux Universitaires de Strasbourg, France.,Fédération de Médecine Translationnelle de Strasbourg - FMTS - Faculté de Médecine, Université de Strasbourg, France
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17
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Targeting cancer stem cells by nutraceuticals for cancer therapy. Semin Cancer Biol 2021; 85:234-245. [PMID: 34273521 DOI: 10.1016/j.semcancer.2021.07.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/08/2021] [Accepted: 07/12/2021] [Indexed: 02/06/2023]
Abstract
Accumulating evidence has demonstrated that cancer stem cells (CSCs) play an essential role in tumor progression and reoccurrence and drug resistance. Multiple signaling pathways have been revealed to be critically participated in CSC development and maintenance. Emerging evidence indicates that numerous chemopreventive compounds, also known as nutraceuticals, could eliminate CSCs in part via regulating several signaling pathways. Therefore, in this review, we will describe the some natural chemopreventive agents that target CSCs in a variety of human malignancies, including soy isoflavone, curcumin, resveratrol, tea polyphenols, sulforaphane, quercetin, indole-3-carbinol, 3,3'-diindolylmethane, withaferin A, apigenin, etc. Moreover, we discuss that eliminating CSCs by nutraceuticals might be a promising strategy for treating human cancer via overcoming drug resistance and reducing tumor reoccurrence.
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18
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Zhao N, Wang F, Ahmed S, Liu K, Zhang C, Cathcart SJ, DiMaio DJ, Punsoni M, Guan B, Zhou P, Wang S, Batra SK, Bronich T, Hei TK, Lin C, Zhang C. Androgen Receptor, Although Not a Specific Marker For, Is a Novel Target to Suppress Glioma Stem Cells as a Therapeutic Strategy for Glioblastoma. Front Oncol 2021; 11:616625. [PMID: 34094902 PMCID: PMC8175980 DOI: 10.3389/fonc.2021.616625] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 04/23/2021] [Indexed: 11/13/2022] Open
Abstract
Targeting androgen receptor (AR) has been shown to be promising in treating glioblastoma (GBM) in cell culture and flank implant models but the mechanisms remain unclear. AR antagonists including enzalutamide are available for treating prostate cancer patients in clinic and can pass the blood-brain barrier, thus are potentially good candidates for GBM treatment but have not been tested in GBM orthotopically. Our current studies confirmed that in patients, a majority of GBM tumors overexpress AR in both genders. Enzalutamide inhibited the proliferation of GBM cells both in vitro and in vivo. Although confocal microscopy demonstrated that AR is expressed but not specifically in glioma cancer stem cells (CSCs) (CD133+), enzalutamide treatment significantly decreased CSC population in cultured monolayer cells and spheroids, suppressed tumor sphere-forming capacity of GBM cells, and downregulated CSC gene expression at mRNA and protein levels in a dose- and time-dependent manner. We have, for the first time, demonstrated that enzalutamide treatment decreased the density of CSCs in vivo and improved survival in an orthotopic GBM mouse model. We conclude that AR antagonists potently target glioma CSCs in addition to suppressing the overall proliferation of GBM cells as a mechanism supporting their repurposing for clinical applications treating GBM.
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Affiliation(s)
- Nan Zhao
- Department of Radiation Oncology, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, United States
| | - Fei Wang
- Department of Radiation Oncology, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, United States
| | - Shaheen Ahmed
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, United States
| | - Kan Liu
- School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Chi Zhang
- School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Sahara J Cathcart
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Dominick J DiMaio
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Michael Punsoni
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Bingjie Guan
- Department of Radiation Oncology, Union Hospital of Fujian Medical University, Fuzhou, China
| | - Ping Zhou
- Department of Radiation Oncology, The First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Shuo Wang
- Department of Radiation Oncology, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, United States
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, College of Medicine, Eppley Institute for Research in Cancer, University of Nebraska Medical Center, Omaha, NE, United States
| | - Tatiana Bronich
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, United States
| | - Tom K Hei
- Center for Radiological Research, College of Physicians and Surgeons, Columbia University, New York, NY, United States
| | - Chi Lin
- Department of Radiation Oncology, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, United States
| | - Chi Zhang
- Department of Radiation Oncology, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, United States
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19
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Marima R, Hull R, Mathabe K, Setlai B, Batra J, Sartor O, Mehrotra R, Dlamini Z. Prostate cancer racial, socioeconomic, geographic disparities: targeting the genomic landscape and splicing events in search for diagnostic, prognostic and therapeutic targets. Am J Cancer Res 2021; 11:1012-1030. [PMID: 33948343 PMCID: PMC8085879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 01/25/2021] [Indexed: 06/12/2023] Open
Abstract
Prostate cancer (PCa) is one of the leading causes of deaths in men globally. This is a heterogeneous and complex disease that urgently warrants further insight into its pathology. Developed countries have thus far the highest PCa incidence rates, with comparatively low mortality rates. Even though PCa in the Asian population seems to have high incidence and mortality rates, the African countries are emerging as the focal center for this disease. It has also been reported that the Sub-Saharan (SSA) countries have both the highest incidence and mortality rates. To date, few studies have reported the link between PCa and African populations. Adequate evidence is still missing to fully comprehend this relationship. While it has been brought to attention that racial, geographical and socioeconomic status are contributing factors, men of African descent across the globe, irrespective of their geographical position have higher PCa incidence and mortality rates compared to their white counterparts. To date, hormone therapy is the mainstay treatment of PCa, while the dysregulation of androgen receptor (AR) signaling is a hallmark of PCa. One of the emerging problems with this therapeutic approach is resistance to antiandrogens, and that AR splice isoforms implicated in the progression of PCa lack the therapeutic ligand-binding domain (LBD) target. AR splice variants targeted therapy is emerging and in clinical trials. Leveraging PCa transcriptomics is key towards PCa precision medicine. The aim of this review is to outline the PCa epidemiology globally and in Africa, PCa associated risk factors, discuss AR signaling and PCa mechanisms, the role of dysregulated splicing in PCa as novel prognostic indicators and therapeutic targets.
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Affiliation(s)
- Rahaba Marima
- SAMRC/UP Precision Prevention and Novel Drug Targets for HIV-Associated Cancers Extramural Unit, Pan African Cancer Research Institute (PACRI), University of PretoriaHatfield 0028, South Africa
| | - Rodney Hull
- SAMRC/UP Precision Prevention and Novel Drug Targets for HIV-Associated Cancers Extramural Unit, Pan African Cancer Research Institute (PACRI), University of PretoriaHatfield 0028, South Africa
| | - Kgomotso Mathabe
- Department of Urology, Faculty of Health Sciences, University of PretoriaHatfield 0028, South Africa
| | - Botle Setlai
- Department of Surgery, Faculty of Health Sciences, University of PretoriaHatfield 0028, South Africa
| | - Jyotsna Batra
- Australian Prostate Cancer Research Centre - Queensland, Translational Research InstituteBrisbane 4102, Australia
- Cancer Program, School of Biomedical Sciences, Institute of Health and Biomedical Innovation, Queensland University of TechnologyBrisbane 4102, Australia
| | - Oliver Sartor
- SAMRC/UP Precision Prevention and Novel Drug Targets for HIV-Associated Cancers Extramural Unit, Pan African Cancer Research Institute (PACRI), University of PretoriaHatfield 0028, South Africa
- Tulane Cancer Center, Tulane Medical SchoolNew Orleans, LA 70112, United States
| | - Ravi Mehrotra
- SAMRC/UP Precision Prevention and Novel Drug Targets for HIV-Associated Cancers Extramural Unit, Pan African Cancer Research Institute (PACRI), University of PretoriaHatfield 0028, South Africa
- India Cancer Research Consortium (ICMR-DHR) Department of Health ResearchRed Cross Road, New Delhi 110001, India
| | - Zodwa Dlamini
- SAMRC/UP Precision Prevention and Novel Drug Targets for HIV-Associated Cancers Extramural Unit, Pan African Cancer Research Institute (PACRI), University of PretoriaHatfield 0028, South Africa
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20
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Cheng WC, Wang HJ. Current advances of targeting epigenetic modifications in neuroendocrine prostate cancer. Tzu Chi Med J 2021; 33:224-232. [PMID: 34386358 PMCID: PMC8323647 DOI: 10.4103/tcmj.tcmj_220_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/05/2020] [Accepted: 10/06/2020] [Indexed: 11/15/2022] Open
Abstract
Neuroendocrine prostate cancer (NEPC) is the most lethal malignancy of prostate cancer (PCa). Treatment with next-generation androgen receptor (AR) pathway inhibitors (ARPIs) has successfully extended patients' lifespan. However, with the emergence of drug resistance, PCa tumors increasingly adapt to potent ARPI therapies by transitioning to alternative cellular lineage. Such therapy-induced drug resistance is largely driven from the cellular plasticity of PCa cells to alter their phenotypes of AR independence for cell growth and survival. Some of the resistant PCa cells undergo cellular reprogramming to form neuroendocrine phenotypes. Recent evidences suggest that this cellular reprogramming or the lineage plasticity is driven by dysregulation of the epigenome and transcriptional networks. Aberrant DNA methylation and altered expression of epigenetic modifiers, such as enhancer of zeste-homolog 2, transcription factors, histone demethylases, are hallmarks of NEPC. In this review, we discuss the nature of the epigenetic and transcriptional landscapes of PCa cells which lose their AR independence and transition to the neuroendocrine lineage. We also discuss how oncogenic signaling and metabolic reprogramming fuel epigenetic and transcriptional alterations. In addition, the current state of epigenetic therapies for NEPC is addressed.
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Affiliation(s)
- Wen-Chi Cheng
- SDGs Teaching and Research Headquarters, Tzu Chi University, Hualien, Taiwan
| | - Hung-Jung Wang
- Institute of Medical Sciences, Tzu Chi University, Hualien, Taiwan.,Doctoral Degree Program in Translational Medicine, Tzu Chi University and Academia Sinica, Hualien, Taiwan
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21
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Altschuler J, Stockert JA, Kyprianou N. Non-Coding RNAs Set a New Phenotypic Frontier in Prostate Cancer Metastasis and Resistance. Int J Mol Sci 2021; 22:ijms22042100. [PMID: 33672595 PMCID: PMC7924036 DOI: 10.3390/ijms22042100] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/08/2021] [Accepted: 02/10/2021] [Indexed: 02/07/2023] Open
Abstract
Prostate cancer (PCa) mortality remains a significant public health problem, as advanced disease has poor survivability due to the development of resistance in response to both standard and novel therapeutic interventions. Therapeutic resistance is a multifaceted problem involving the interplay of a number of biological mechanisms including genetic, signaling, and phenotypic alterations, compounded by the contributions of a tumor microenvironment that supports tumor growth, invasiveness, and metastasis. The androgen receptor (AR) is a primary regulator of prostate cell growth, response and maintenance, and the target of most standard PCa therapies designed to inhibit AR from interacting with androgens, its native ligands. As such, AR remains the main driver of therapeutic response in patients with metastatic castration-resistant prostate cancer (mCRPC). While androgen deprivation therapy (ADT), in combination with microtubule-targeting taxane chemotherapy, offers survival benefits in patients with mCRPC, therapeutic resistance invariably develops, leading to lethal disease. Understanding the mechanisms underlying resistance is critical to improving therapeutic outcomes and also to the development of biomarker signatures of predictive value. The interconversions between epithelial-to-mesenchymal transition (EMT) and mesenchymal-to-epithelial transition (MET) navigate the prostate tumor therapeutic response, and provide a novel targeting platform in overcoming therapeutic resistance. Both microRNA (miRNA)- and long non-coding RNA (lncRNA)-mediated mechanisms have been associated with epigenetic changes in prostate cancer. This review discusses the current evidence-based knowledge of the role of the phenotypic transitions and novel molecular determinants (non-coding RNAs) as contributors to the emergence of therapeutic resistance and metastasis and their integrated predictive value in prostate cancer progression to advanced disease.
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Affiliation(s)
- Joshua Altschuler
- Department of Urology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (J.A.); (J.A.S.)
| | - Jennifer A. Stockert
- Department of Urology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (J.A.); (J.A.S.)
| | - Natasha Kyprianou
- Department of Urology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (J.A.); (J.A.S.)
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Correspondence:
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22
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Xu QQ, Zhang C, Zhang YL, Lei JL, Kong LY, Luo JG. Dimeric guaianes from leaves of Xylopia vielana as snail inhibitors identified by high content screening. Bioorg Chem 2021; 108:104646. [PMID: 33484941 DOI: 10.1016/j.bioorg.2021.104646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 12/08/2020] [Accepted: 01/06/2021] [Indexed: 11/17/2022]
Abstract
The transcriptional repressor Snail trriggers epithelial-mesenchymal transition (EMT), the process allowing cancer cells with invasive and metastasis properties. In this study, we screened medicinal plants for the Snail inhibitory active components by high content screen (HCS) and found that the crude extract of Xylopia vielana leaves showed potential activity. Subsequently, bioassay-guided isolation of the extract of Xylopia vielana was performed to obtain twenty-four dimeric guaianes (1-24), including 16 new analogues (1-5, 8-11, 13-15, 17, 18, 21, and 22). Their structures were elucidated by the comprehensive application of multiple spectroscopic methods. Compounds 1, 11, 12, and 16 were initially identified as the active compounds. Wound healing assay, transwell migration assay and western blot experiments verified that compounds 1 and 12 inhibited the expression of Snail in a concentration-dependent manner, and compound 12 was verified as a potent tumor migration inhibitory agent. This work showed a practical strategy for the discovery of new Snail inhibitors from natural products and provided potential insights for dimeric guaianes as anticancer lead compounds specifically targeting Snail protein.
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Affiliation(s)
- Qi-Qi Xu
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Chao Zhang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Ya-Long Zhang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Jian-Li Lei
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Ling-Yi Kong
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China.
| | - Jian-Guang Luo
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China.
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Regulation of carcinogenesis and mediation through Wnt/β-catenin signaling by 3,3'-diindolylmethane in an enzalutamide-resistant prostate cancer cell line. Sci Rep 2021; 11:1239. [PMID: 33441906 PMCID: PMC7806813 DOI: 10.1038/s41598-020-80519-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 12/18/2020] [Indexed: 12/09/2022] Open
Abstract
Enzalutamide (ENZ) is an important drug used to treat castration-resistant prostate cancer (CRPC), which inhibits androgen receptor (AR) signaling. Previous study showed that 3,3′-diindolylmethane (DIM) is an AR antagonist that also inhibits Wnt signaling and epithelial-mesenchymal transition (EMT). To investigate whether combined treatment with ENZ and DIM can overcome ENZ resistance by regulating Wnt signaling to inhibit AR signaling and EMT in ENZ-resistant prostate cancer cells, 22Rv1 cells were cultured in normal medium and treated with ENZ, DIM, and DIM with ENZ. Exposure of ENZ-resistant cells to both DIM and ENZ significantly inhibited cell proliferation without cytotoxicity and invasion in comparison with the control. DIM significantly increased the E-cadherin expression and inhibited the expressions of Vimentin and Fibronectin, subsequently inhibiting EMT. Co-treatment with ENZ and DIM significantly increased the expressions of GSK3β and APC and decreased the β-catenin protein expression, causing inhibition of Wnt signaling and AR expression, it also significantly decreased the AR-v7 expression and down-regulated AR signaling. Via suppression of Wnt and AR signaling, co-treatment increased the E-cadherin and decreased the Vimentin and Fibronectin RNA and protein expressions, then inhibited EMT. Co-treatment with DIM and ENZ regulated Wnt signaling to reduce not only the AR expression, but also the AR-v7 expression, indicating suppression of EMT that inhibits cancer cell proliferation, invasion and migration to ameliorate ENZ resistance.
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24
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Thelen P, Taubert H, Duensing S, Kristiansen G, Merseburger AS, Cronauer MV. [The impact of the androgen receptor splice variant AR-V7 on the prognosis and treatment of advanced prostate cancer]. Aktuelle Urol 2020; 51:582-592. [PMID: 29370587 DOI: 10.1055/s-0043-115426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A recently discovered mechanism enabling prostate cancer cells to escape the effects of endocrine therapies consists in the synthesis of C-terminally truncated, constitutively active androgen receptor (AR) splice variants (AR-V). Devoid of a functional C-terminal hormone/ligand binding domain, various AR-Vs are insensitive to therapies targeting the androgen/AR signalling axis. Preliminary studies suggest that AR-V7, the most common AR-V, is a promising predictive tumour marker and a relevant selection marker for the treatment of advanced prostate cancer. This review critically outlines recent advances in AR-V7 diagnostics and presents an overview of current AR-V7 targeted therapies.
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Affiliation(s)
- P. Thelen
- Klinik für Urologie, Universitätsmedizin Göttingen, 37099 Göttingen
| | - H. Taubert
- Urologische und Kinderurologische Klinik, Universitätsklinikum Erlangen, 91054 Erlangen
| | - S. Duensing
- Urologische Klinik, Sektion für Molekulare Uro-Onkologie, Universitätsklinikum Heidelberg, 69120 Heidelberg
| | - G. Kristiansen
- Institut für Pathologie, Universitätsklinikum Bonn, 53127 Bonn
| | - A. S. Merseburger
- Klinik für Urologie, Universitätsklinikum Schleswig-Holstein – Campus Lübeck, 23538 Lübeck
| | - M. V. Cronauer
- Klinik für Urologie, Universitätsklinikum Schleswig-Holstein – Campus Lübeck, 23538 Lübeck
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25
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Chen Y, Lan T. Molecular Origin, Expression Regulation, and Biological Function of Androgen Receptor Splicing Variant 7 in Prostate Cancer. Urol Int 2020; 105:337-353. [PMID: 32957106 DOI: 10.1159/000510124] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 07/07/2020] [Indexed: 11/19/2022]
Abstract
The problem of resistance to therapy in prostate cancer (PCa) is multifaceted. Key determinants of drug resistance include tumor burden and growth kinetics, tumor heterogeneity, physical barriers, immune system and microenvironment, undruggable cancer drivers, and consequences of therapeutic pressures. With regard to the fundamental importance of the androgen receptor (AR) in all stages of PCa from tumorigenesis to progression, AR is postulated to have a continued critical role in castration-resistant prostate cancer (CRPC). Suppression of AR signaling mediated by the full-length AR (AR-FL) is the therapeutic goal of all AR-directed therapies. However, AR-targeting agents ultimately lead to AR aberrations that promote PCa progression and drug resistance. Among these AR aberrations, androgen receptor variant 7 (AR-V7) is gaining attention as a potential predictive marker for as well as one of the resistance mechanisms to the most current anti-AR therapies in CRPC. Meanwhile, development of next-generation drugs that directly or indirectly target AR-V7 signaling is urgently needed. In the present review of the current literature, we have summarized the origin, alternative splicing, expression induction, protein conformation, interaction with coregulators, relationship with AR-FL, transcriptional activity, and biological function of AR-V7 in PCa development and therapeutic resistance. We hope this review will help further understand the molecular origin, expression regulation, and role of AR-V7 in the progression of PCa and provide insight into the design of novel selective inhibitors of AR-V7 in PCa treatment.
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Affiliation(s)
- Ye Chen
- Department of Surgery and Anesthesiology, Joint Logistic Support 940 Hospital of CPLA, Lanzhou, China
| | - Tian Lan
- Department of Urology, Joint Logistic Support 940 Hospital of CPLA, Lanzhou, China,
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26
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Fernández-Lázaro D, García Hernández JL, Caballero García A, Caballero del Castillo A, Villaverde Hueso M, Cruz-Hernández JJ. Clinical Perspective and Translational Oncology of Liquid Biopsy. Diagnostics (Basel) 2020; 10:E443. [PMID: 32629823 PMCID: PMC7400430 DOI: 10.3390/diagnostics10070443] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/23/2020] [Accepted: 06/29/2020] [Indexed: 01/06/2023] Open
Abstract
The term liquid biopsy (LB) refers to the study of circulating tumor cells, circulating tumors nucleic acids free of cells or contained in exosomes, and information about platelets associated with tumors. LB can be performed in different biofluids and allows the limitations of tissue biopsy to be overcome offering possibilities of tumor identification reflecting in real time tumor heterogeneity. In addition, LB allows screening and early detection of cancer, real-time monitoring of therapy, stratification and therapeutic intervention, a therapeutic target and resistance mechanism, and a risk of metastatic relapse. Currently, LB has been shown to be effective for its application in different types of tumors including lung, colorectal, prostate, melanoma, breast and pancreatic cancer, by the determination and identification of biomarkers that with a high probability have the potential to change the way in which medical oncology could predict the course of the disease. These biomarkers make it possible to capture the heterogeneity of the cancer, monitor its clonal evolution, indicate new treatments or retreatments and evaluate the responses to different evolutionary and/or therapeutic pressures in the cancer disease.
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Affiliation(s)
- Diego Fernández-Lázaro
- Department of Cellular Biology, Histology and Pharmacology, Faculty of Health Sciences, University of Valladolid, Campus de Soria, 42003 Soria, Spain;
| | - Juan Luis García Hernández
- Cancer Research Centre, University of Salamanca, 37007 Salamanca, Spain;
- Institute of Biomedical Research of Salamanca, University Hospital of Salamanca (IBSAL), 3007 Salamanca, Spain;
| | - Alberto Caballero García
- Department of Anatomy and Radiology, Faculty of Health Sciences, University of Valladolid, Campus of Soria, 42003 Soria, Spain;
| | | | - María Villaverde Hueso
- Department of Cellular Biology, Histology and Pharmacology, Faculty of Health Sciences, University of Valladolid, Campus de Soria, 42003 Soria, Spain;
| | - Juan Jesús Cruz-Hernández
- Institute of Biomedical Research of Salamanca, University Hospital of Salamanca (IBSAL), 3007 Salamanca, Spain;
- Oncology Service, University Hospital of Salamanca, 37007 Salamanca, Spain;
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Lin CJ, Lo UG, Hsieh JT. The regulatory pathways leading to stem-like cells underlie prostate cancer progression. Asian J Androl 2020; 21:233-240. [PMID: 30178777 PMCID: PMC6498735 DOI: 10.4103/aja.aja_72_18] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Prostate cancer (PCa) is the most common cause of malignancy in males and the third leading cause of cancer mortality in the United States. The standard care for primary PCa with local invasive disease mainly is surgery and radiation. For patients with distant metastases, androgen deprivation therapy (ADT) is a gold standard. Regardless of a favorable outcome of ADT, patients inevitably relapse to an end-stage castration-resistant prostate cancer (CRPC) leading to mortality. Therefore, revealing the mechanism and identifying cellular components driving aggressive PCa is critical for prognosis and therapeutic intervention. Cancer stem cell (CSC) phenotypes characterized as poor differentiation, cancer initiation with self-renewal capabilities, and therapeutic resistance are proposed to contribute to the onset of CRPC. In this review, we discuss the role of CSC in CRPC with the evidence of CSC phenotypes and the possible underlying mechanisms.
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Affiliation(s)
- Chun-Jung Lin
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - U-Ging Lo
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jer-Tsong Hsieh
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390, USA
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28
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Carceles-Cordon M, Kelly WK, Gomella L, Knudsen KE, Rodriguez-Bravo V, Domingo-Domenech J. Cellular rewiring in lethal prostate cancer: the architect of drug resistance. Nat Rev Urol 2020; 17:292-307. [PMID: 32203305 PMCID: PMC7218925 DOI: 10.1038/s41585-020-0298-8] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/20/2020] [Indexed: 12/14/2022]
Abstract
Over the past 5 years, the advent of combination therapeutic strategies has substantially reshaped the clinical management of patients with advanced prostate cancer. However, most of these combination regimens were developed empirically and, despite offering survival benefits, are not enough to halt disease progression. Thus, the development of effective therapeutic strategies that target the mechanisms involved in the acquisition of drug resistance and improve clinical trial design are an unmet clinical need. In this context, we hypothesize that the tumour engineers a dynamic response through the process of cellular rewiring, in which it adapts to the therapy used and develops mechanisms of drug resistance via downstream signalling of key regulatory cascades such as the androgen receptor, PI3K-AKT or GATA2-dependent pathways, as well as initiation of biological processes to revert tumour cells to undifferentiated aggressive states via phenotype switching towards a neuroendocrine phenotype or acquisition of stem-like properties. These dynamic responses are specific for each patient and could be responsible for treatment failure despite multi-target approaches. Understanding the common stages of these cellular rewiring mechanisms to gain a new perspective on the molecular underpinnings of drug resistance might help formulate novel combination therapeutic regimens.
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Affiliation(s)
- Marc Carceles-Cordon
- Medical Oncology Department, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - W Kevin Kelly
- Medical Oncology Department, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - Leonard Gomella
- Urology Department, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - Karen E Knudsen
- Medical Oncology Department, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
- Urology Department, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
- Cancer Biology Department, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - Veronica Rodriguez-Bravo
- Cancer Biology Department, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA.
| | - Josep Domingo-Domenech
- Medical Oncology Department, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA.
- Cancer Biology Department, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA.
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29
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The Prospect of Identifying Resistance Mechanisms for Castrate-Resistant Prostate Cancer Using Circulating Tumor Cells: Is Epithelial-to-Mesenchymal Transition a Key Player? Prostate Cancer 2020; 2020:7938280. [PMID: 32292603 PMCID: PMC7149487 DOI: 10.1155/2020/7938280] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 11/19/2019] [Accepted: 02/14/2020] [Indexed: 12/18/2022] Open
Abstract
Prostate cancer (PCa) is initially driven by excessive androgen receptor (AR) signaling with androgen deprivation therapy (ADT) being a major therapeutic approach to its treatment. However, the development of drug resistance is a significant limitation on the effectiveness of both first-line and more recently developed second-line ADTs. There is a need then to study AR signaling within the context of other oncogenic signaling pathways that likely mediate this resistance. This review focuses on interactions between AR signaling, the well-known phosphatidylinositol-3-kinase/AKT pathway, and an emerging mediator of these pathways, the Hippo/YAP1 axis in metastatic castrate-resistant PCa, and their involvement in the regulation of epithelial-mesenchymal transition (EMT), a feature of disease progression and ADT resistance. Analysis of these pathways in circulating tumor cells (CTCs) may provide an opportunity to evaluate their utility as biomarkers and address their importance in the development of resistance to current ADT with potential to guide future therapies.
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30
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Jiménez-Vacas JM, Herrero-Aguayo V, Montero-Hidalgo AJ, Gómez-Gómez E, Fuentes-Fayos AC, León-González AJ, Sáez-Martínez P, Alors-Pérez E, Pedraza-Arévalo S, González-Serrano T, Reyes O, Martínez-López A, Sánchez-Sánchez R, Ventura S, Yubero-Serrano EM, Requena-Tapia MJ, Castaño JP, Gahete MD, Luque RM. Dysregulation of the splicing machinery is directly associated to aggressiveness of prostate cancer. EBioMedicine 2020; 51:102547. [PMID: 31902674 PMCID: PMC7000340 DOI: 10.1016/j.ebiom.2019.11.008] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 10/28/2019] [Accepted: 11/07/2019] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Dysregulation of splicing variants (SVs) expression has recently emerged as a novel cancer hallmark. Although the generation of aberrant SVs (e.g. AR-v7/sst5TMD4/etc.) is associated to prostate-cancer (PCa) aggressiveness and/or castration-resistant PCa (CRPC) development, whether the molecular reason behind such phenomena might be linked to a dysregulation of the cellular machinery responsible for the splicing process [spliceosome-components (SCs) and splicing-factors (SFs)] has not been yet explored. METHODS Expression levels of 43 key SCs and SFs were measured in two cohorts of PCa-samples: 1) Clinically-localized formalin-fixed paraffin-embedded PCa-samples (n = 84), and 2) highly-aggressive freshly-obtained PCa-samples (n = 42). FINDINGS A profound dysregulation in the expression of multiple components of the splicing machinery (i.e. 7 SCs/19 SFs) were found in PCa compared to their non-tumor adjacent-regions. Notably, overexpression of SNRNP200, SRSF3 and SRRM1 (mRNA and/or protein) were associated with relevant clinical (e.g. Gleason score, T-Stage, metastasis, biochemical recurrence, etc.) and molecular (e.g. AR-v7 expression) parameters of aggressiveness in PCa-samples. Functional (cell-proliferation/migration) and mechanistic [gene-expression (qPCR) and protein-levels (western-blot)] assays were performed in normal prostate cells (PNT2) and PCa-cells (LNCaP/22Rv1/PC-3/DU145 cell-lines) in response to SNRNP200, SRSF3 and/or SRRM1 silencing (using specific siRNAs) revealed an overall decrease in proliferation/migration-rate in PCa-cells through the modulation of key oncogenic SVs expression levels (e.g. AR-v7/PKM2/XBP1s) and alteration of oncogenic signaling pathways (e.g. p-AKT/p-JNK). INTERPRETATION These results demonstrate that the spliceosome is drastically altered in PCa wherein SNRNP200, SRSF3 and SRRM1 could represent attractive novel diagnostic/prognostic and therapeutic targets for PCa and CRPC.
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Affiliation(s)
- Juan M Jiménez-Vacas
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain
| | - Vicente Herrero-Aguayo
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain
| | - Antonio J Montero-Hidalgo
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain
| | - Enrique Gómez-Gómez
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Urology Service, HURS/IMIBIC, Córdoba, Spain
| | - Antonio C Fuentes-Fayos
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain
| | - Antonio J León-González
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain
| | - Prudencio Sáez-Martínez
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain
| | - Emilia Alors-Pérez
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain
| | - Sergio Pedraza-Arévalo
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain
| | - Teresa González-Serrano
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Anatomical Pathology Service, HURS, Córdoba, Spain
| | - Oscar Reyes
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Department of Computer Sciences, University of Córdoba, Córdoba, Spain
| | - Ana Martínez-López
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Anatomical Pathology Service, HURS, Córdoba, Spain
| | - Rafael Sánchez-Sánchez
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Anatomical Pathology Service, HURS, Córdoba, Spain
| | - Sebastián Ventura
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Department of Computer Sciences, University of Córdoba, Córdoba, Spain
| | - Elena M Yubero-Serrano
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain; Lipids and Atherosclerosis Unit, Reina Sofia University Hospital, Córdoba, Spain
| | - María J Requena-Tapia
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Urology Service, HURS/IMIBIC, Córdoba, Spain
| | - Justo P Castaño
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain
| | - Manuel D Gahete
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain
| | - Raúl M Luque
- Maimonides Institute for Biomedical Research of Córdoba (IMIBIC), Córdoba, Spain; Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain; Hospital Universitario Reina Sofía (HURS), Córdoba, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain.
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Wong KM, Song J, Saini V, Wong YH. Small Molecules as Drugs to Upregulate Metastasis Suppressors in Cancer Cells. Curr Med Chem 2019; 26:5876-5899. [PMID: 29788870 DOI: 10.2174/0929867325666180522090842] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 03/20/2018] [Accepted: 05/18/2018] [Indexed: 12/26/2022]
Abstract
It is well-recognized that the majority of cancer-related deaths is attributed to metastasis, which can arise from virtually any type of tumor. Metastasis is a complex multistep process wherein cancer cells must break away from the primary tumor, intravasate into the circulatory or lymphatic systems, extravasate, proliferate and eventually colonize secondary sites. Since these molecular processes involve the coordinated actions of numerous proteins, targeted disruptions of key players along these pathways represent possible therapeutic interventions to impede metastasis formation and reduce cancer mortality. A diverse group of proteins with demonstrated ability to inhibit metastatic colonization have been identified and they are collectively known as metastasis suppressors. Given that the metastasis suppressors are often downregulated in tumors, drug-induced re-expression or upregulation of these proteins represents a promising approach to limit metastasis. Indeed, over 40 compounds are known to exhibit efficacy in upregulating the expression of metastasis suppressors via transcriptional or post-transcriptional mechanisms, and the most promising ones are being evaluated for their translational potentials. These small molecules range from natural products to drugs in clinical use and they apparently target different molecular pathways, reflecting the diverse nature of the metastasis suppressors. In this review, we provide an overview of the different classes of compounds known to possess the ability to upregulate one or more metastasis suppressors, with an emphasis on their mechanisms of action and therapeutic potentials.
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Affiliation(s)
- Ka Ming Wong
- Division of Life Science and the Biotechnology Research Institute, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Jiaxing Song
- Division of Life Science and the Biotechnology Research Institute, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Vasu Saini
- Division of Life Science and the Biotechnology Research Institute, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Yung H Wong
- Division of Life Science and the Biotechnology Research Institute, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.,State Key Laboratory of Molecular Neuroscience, and the Molecular Neuroscience Center, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.,Guangdong Provincial Key Laboratory of Brain Science, Disease and Drug Development, HKUST Shenzhen Research Institute, Shenzhen, China
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32
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O'Reilly D, Johnson P, Buchanan PJ. Hypoxia induced cancer stem cell enrichment promotes resistance to androgen deprivation therapy in prostate cancer. Steroids 2019; 152:108497. [PMID: 31521707 DOI: 10.1016/j.steroids.2019.108497] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 09/03/2019] [Accepted: 09/09/2019] [Indexed: 02/06/2023]
Abstract
Androgen deprivation therapy (ADT) is the main treatment to prolong survival in advance stage prostate cancer (PCa) but associated resistance leads to the development of terminal castrate resistant PCa (CRPC). Current research demonstrates that prostate cancer stem cells (PCSC) play a critical role in the development of treatment resistance and subsequent disease progression. Despite uncertainty surrounding the origin of these cells, studies clearly show they are associated with poorer outcomes and that ADT significantly enhances their numbers. Here in we highlight how activation of HIF signalling, in response to hypoxic conditions within the tumour microenvironment, results in the expression of genes associated with stemness and EMT promoting PCSC emergence which ultimately drives tumour relapse to CRPC. Hypoxic conditions are not only enhanced by ADT but the associated decrease in AR activation also promotes PI3K/AKT signalling which actively enhances HIF and its effects on PCSC's. Furthermore, emerging evidence now indicates that HIF-2α, rather than the commonly considered HIF-1α, is the main family member that drives PCSC emergence. Taken together this clearly identifies HIF and associated pathways as key targets for new therapeutic strategies that could potentially prevent or slow PCSC promoted resistance to ADT, thus holding potential to prolong patient survival.
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Affiliation(s)
- Debbie O'Reilly
- School of Nursing & Human Sciences, Dublin City University, Dublin, Ireland; National Institute of Cellular Biotechnology, Dublin City University, Dublin, Ireland
| | - Patricia Johnson
- School of Nursing & Human Sciences, Dublin City University, Dublin, Ireland
| | - Paul J Buchanan
- School of Nursing & Human Sciences, Dublin City University, Dublin, Ireland; National Institute of Cellular Biotechnology, Dublin City University, Dublin, Ireland.
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33
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Galeterone and The Next Generation Galeterone Analogs, VNPP414 and VNPP433-3β Exert Potent Therapeutic Effects in Castration-/Drug-Resistant Prostate Cancer Preclinical Models In Vitro and In Vivo. Cancers (Basel) 2019; 11:cancers11111637. [PMID: 31653008 PMCID: PMC6895912 DOI: 10.3390/cancers11111637] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/03/2019] [Accepted: 10/18/2019] [Indexed: 12/16/2022] Open
Abstract
These studies compared the efficacies of our clinical agent galeterone (Gal) and the FDA-approved prostate cancer drug, enzalutamide (ENZ) with two lead next generation galeterone analogs (NGGAs), VNPP414 and VNPP433-3β, using prostate cancer (PC) in vitro and in vivo models. Antitumor activities of orally administered agents were also assessed in CWR22Rv1 tumor-bearing mice. We demonstrated that Gal and NGGAs degraded AR/AR-V7 and Mnk1/2; blocked cell cycle progression and proliferation of human PC cells; induced apoptosis; inhibited cell migration, invasion, and putative stem cell markers; and reversed the expression of epithelial-to-mesenchymal transition (EMT). In addition, Gal/NGGAs (alone or in combination) also inhibited the growth of ENZ-, docetaxel-, and mitoxantrone-resistant human PC cell lines. The NGGAs exhibited improved pharmacokinetic profiles over Gal in mice. Importantly, in vivo testing showed that VNPP433-3β (at 7.53-fold lower equimolar dose than Gal) markedly suppressed (84% vs. Gal, 47%; p < 0.01) the growth of castration-resistant PC (CRPC) CWR22Rv1 xenograft tumors, with no apparent host toxicity. ENZ was ineffective in this CRPC xenograft model. In summary, our findings show that targeting AR/AR-V7 and Mnk1/2 for degradation represents an effective therapeutic strategy for PC/CRPC treatment and supports further development of VNPP433-3β towards clinical investigation.
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34
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Shao C, Yu B, Liu Y. Androgen receptor splicing variant 7: Beyond being a constitutively active variant. Life Sci 2019; 234:116768. [PMID: 31445027 DOI: 10.1016/j.lfs.2019.116768] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/12/2019] [Accepted: 08/13/2019] [Indexed: 01/01/2023]
Abstract
In prostate cancer development, the androgen receptor (AR) signaling plays a crucial role during both formation of early prostate lesions and progression to the lethal, incurable castration resistant stage. Accordingly, numerous approaches have been developed to inhibit AR activity including androgen deprivation therapy, application of the AR antagonists as well as the use of taxanes. However, these treatments, although effective initially, resistance inevitably occur for most of the patients within several years and limiting the therapeutic efficacy. Of note, alterations and reactivation of the AR signaling pathway have been demonstrated as the major reasons for the observed resistance. Accumulating evidences have suggested that synthesis of AR splicing variants, in particular, the constitutively active AR-V7, is one of the most important mechanisms that contribute to the abnormal AR signaling. In addition, clinical data also highlight the potential of using AR-V7 as a predictive biomarker and a therapeutic target in metastatic castration resistant prostate cancer (mCRPC). In this review, we summarize the recent findings concerning the specific role of AR-V7 in CRPC progression, drug resistance and its potential value in clinical assessment.
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Affiliation(s)
- Chen Shao
- Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Bingbing Yu
- Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Yanan Liu
- Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun, China.
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35
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Blatt EB, Raj GV. Molecular mechanisms of enzalutamide resistance in prostate cancer. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2019; 2:189-197. [PMID: 35582713 PMCID: PMC8992629 DOI: 10.20517/cdr.2019.25] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 05/06/2019] [Accepted: 05/10/2019] [Indexed: 11/12/2022]
Abstract
An estimated 30,000 men in the United States will die of metastatic prostate cancer (PCa) each year due to the development of therapy resistance, most notably resistance to second-generation antiandrogen enzalutamide. The vast majority of PCa is driven by the androgen receptor (AR). Enzalutamide is an AR antagonist, which extends patient survival and is widely used in the clinic for the treatment of castration-resistant prostate cancer (CRPC); however, many patients will have primary or develop acquired resistance and continue to progress. Characterization of the molecular mechanisms of enzalutamide resistance provides insight into potentially efficacious therapies for enzalutamide-resistant CRPC (ER-CRPC). Understanding these mechanisms is critical for the identification of biomarkers predictive of therapy resistance and the development of therapeutic strategies to target ER-CRPC.
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Affiliation(s)
- Eliot B. Blatt
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Ganesh V. Raj
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
- Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
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36
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Vummidi Giridhar P, Williams K, VonHandorf AP, Deford PL, Kasper S. Constant Degradation of the Androgen Receptor by MDM2 Conserves Prostate Cancer Stem Cell Integrity. Cancer Res 2019; 79:1124-1137. [PMID: 30626627 DOI: 10.1158/0008-5472.can-18-1753] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 11/14/2018] [Accepted: 01/02/2019] [Indexed: 12/21/2022]
Abstract
Prostate cancer stem cells (CSC) are implicated in tumor initiation, cancer progression, metastasis, and the development of therapeutic-resistant disease. It is well known that the bulk of prostate cancer cells express androgen receptor (AR) and that androgens are required for prostate cancer growth, progression, and emergence of castration-resistant disease. In contrast, the small subpopulation of self-renewing CSCs exhibits an AR-negative (AR-) signature. The mechanisms underlying the absence of AR are unknown. Using CSC-like cell models isolated from clinical biopsy tissues, we identify the E3 ligase MDM2 as a key regulator of prostate CSC integrity. First, unlike what has been reported for the bulk of AR+ tumor cells where MDM2 regulates the temporal expression of AR during transcriptional activity, MDM2 in CSCs promoted the constant ubiquitination and degradation of AR, resulting in sustained loss of total AR protein. Second, MDM2 promoted CSC self-renewal, the expression of stem cell factors, and CSC proliferation. Loss of MDM2 reversed these processes and induced expression of full-length AR (and not AR variants), terminal differentiation into luminal cells, and cell death. Selectively blocking MDM2-mediated activity in combination with androgen/AR-targeted therapy may offer a novel strategy for eliminating AR- CSCs in addition to the bulk of AR+ prostate cancer cells, decreasing metastatic tumor burden and inhibiting the emergence of therapeutic resistance.Significance: These findings provide a novel mechanistic aspect of prostate cancer cell stemness that advances our understanding of the diverse transcriptional activity that bypasses AR in contributing to therapeutic resistance, tumor progression, and metastasis.Graphical Abstract: http://cancerres.aacrjournals.org/content/canres/79/6/1124/F1.large.jpg.
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Affiliation(s)
- Premkumar Vummidi Giridhar
- Department of Neonatology and Pulmonary Biology, Cincinnati Children's Hospital and Medical Center, Cincinnati, Ohio
| | - Karin Williams
- Translational Radiation Biology, Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, College of Medical, Veterinary & Life Sciences University of Glasgow, Glasgow, Scotland
| | - Andrew P VonHandorf
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Paul L Deford
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Susan Kasper
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, Ohio.
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37
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Wang T, Liu Y, Liu Q, Cummins S, Zhao M. Integrative proteomic analysis reveals potential high-frequency alternative open reading frame-encoded peptides in human colorectal cancer. Life Sci 2018; 215:182-189. [PMID: 30419281 DOI: 10.1016/j.lfs.2018.11.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 10/31/2018] [Accepted: 11/08/2018] [Indexed: 11/30/2022]
Abstract
Identification of alternative open reading frame-encoded peptides (AEPs) for the diagnosis of colorectal cancer at the proteome level is largely unexplored because of a lack of comprehensive proteomics data. Here, we performed a comprehensive integrative analysis of mass spectral data published by Clinical Proteomic Tumor Analysis Consortium and characterized 93 high-confident AEPs encoded within 75 genes. There are four cancer-related genes appeared to have AEPs identified frequently in >20 out of 95 colorectal cancer samples, including ABCF2, AR, RBM10 and NRG1. Further network analysis of the identified AEPs found the enrichment of novel AEPs within hormone androgen receptor and a highly-modularised network with 42 genes associated with patient survival. Our results not only suggested a mechanistic view of how AEPs work in cancer progression, but also shed light on somatic amino acid mutations in AEPs, which might be overlooked previously because of their low frequencies. In particular, potential high-frequency mutations in 77 samples associated with EDARADD may contribute to the discovery of new biomarkers and the development of innovative therapeutic approaches.
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Affiliation(s)
- Tianfang Wang
- School of Science and Engineering, University of the Sunshine Coast, Maroochydore DC, Queensland, 4558, Australia.
| | - Yining Liu
- The School of Public Health, Institute for Chemical Carcinogenesis, Guangzhou Medical University, 195 Dongfengxi Road, Guangzhou 510182, China
| | - Qi Liu
- Department of Biomedical Informatics, School of Medicine, Vanderbilt University, Nashville, TN 37232, United States; Center for Quantitative Sciences, School of Medicine, Vanderbilt University, Nashville, TN 37232, United States
| | - Scott Cummins
- School of Science and Engineering, University of the Sunshine Coast, Maroochydore DC, Queensland, 4558, Australia
| | - Min Zhao
- School of Science and Engineering, University of the Sunshine Coast, Maroochydore DC, Queensland, 4558, Australia.
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38
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Jolly MK, Somarelli JA, Sheth M, Biddle A, Tripathi SC, Armstrong AJ, Hanash SM, Bapat SA, Rangarajan A, Levine H. Hybrid epithelial/mesenchymal phenotypes promote metastasis and therapy resistance across carcinomas. Pharmacol Ther 2018; 194:161-184. [PMID: 30268772 DOI: 10.1016/j.pharmthera.2018.09.007] [Citation(s) in RCA: 199] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Cancer metastasis and therapy resistance are the major unsolved clinical challenges, and account for nearly all cancer-related deaths. Both metastasis and therapy resistance are fueled by epithelial plasticity, the reversible phenotypic transitions between epithelial and mesenchymal phenotypes, including epithelial-mesenchymal transition (EMT) and mesenchymal-epithelial transition (MET). EMT and MET have been largely considered as binary processes, where cells detach from the primary tumor as individual units with many, if not all, traits of a mesenchymal cell (EMT) and then convert back to being epithelial (MET). However, recent studies have demonstrated that cells can metastasize in ways alternative to traditional EMT paradigm; for example, they can detach as clusters, and/or occupy one or more stable hybrid epithelial/mesenchymal (E/M) phenotypes that can be the end point of a transition. Such hybrid E/M cells can integrate various epithelial and mesenchymal traits and markers, facilitating collective cell migration. Furthermore, these hybrid E/M cells may possess higher tumor-initiation and metastatic potential as compared to cells on either end of the EMT spectrum. Here, we review in silico, in vitro, in vivo and clinical evidence for the existence of one or more hybrid E/M phenotype(s) in multiple carcinomas, and discuss their implications in tumor-initiation, tumor relapse, therapy resistance, and metastasis. Together, these studies drive the emerging notion that cells in a hybrid E/M phenotype may occupy 'metastatic sweet spot' in multiple subtypes of carcinomas, and pathways linked to this (these) hybrid E/M state(s) may be relevant as prognostic biomarkers as well as a promising therapeutic targets.
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Affiliation(s)
- Mohit Kumar Jolly
- Center for Theoretical Biological Physics, Rice University, Houston, TX, USA.
| | - Jason A Somarelli
- Duke Cancer Institute and Department of Medicine, Duke University Medical Center, Durham, USA
| | - Maya Sheth
- Duke Cancer Institute and Department of Medicine, Duke University Medical Center, Durham, USA
| | - Adrian Biddle
- Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Satyendra C Tripathi
- Department of Clinical Cancer Prevention, UT MD Anderson Cancer Center, Houston, USA
| | - Andrew J Armstrong
- Duke Cancer Institute and Department of Medicine, Duke University Medical Center, Durham, USA
| | - Samir M Hanash
- Department of Clinical Cancer Prevention, UT MD Anderson Cancer Center, Houston, USA
| | - Sharmila A Bapat
- National Center for Cell Science, Savitribai Phule Pune University Campus, Ganeshkhind, Pune, India
| | - Annapoorni Rangarajan
- Department of Molecular Reproduction, Development & Genetics, Indian Institute of Science, Bangalore, India
| | - Herbert Levine
- Center for Theoretical Biological Physics, Rice University, Houston, TX, USA.
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39
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Kiselev VI, Ashrafyan LA, Muyzhnek EL, Gerfanova EV, Antonova IB, Aleshikova OI, Sarkar FH. A new promising way of maintenance therapy in advanced ovarian cancer: a comparative clinical study. BMC Cancer 2018; 18:904. [PMID: 30236079 PMCID: PMC6148762 DOI: 10.1186/s12885-018-4792-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 09/03/2018] [Indexed: 12/02/2022] Open
Abstract
Background There is an urgent need for more novel and efficacious therapeutic agents and strategies for the treatment of ovarian cancer - one of the most formidable female malignancies. These approaches should be based on comprehensive understanding of the pathobiology of this cancer and focused on decreasing its recurrence and metastasis. The aim of this study was to evaluate the efficacy of five-year maintenance therapy with indole-3-carbinol (I3C) as well as I3C and epigallocatechin-3-gallate (EGCG) conducted before, during, and after combined treatment compared with combined treatment alone in advanced ovarian cancer. Methods Patients with stage III-IV serous ovarian cancer were assigned to receive combined treatment plus I3C (arm 1), combined treatment plus I3C and EGCG (arm 2), combined treatment plus I3C and EGCG plus long-term platinum-taxane chemotherapy (arm 3), combined treatment alone without neoadjuvant platinum-taxane chemotherapy (control arm 4), and combined treatment alone (control arm 5). Combined treatment included neoadjuvant platinum-taxane chemotherapy, surgery, and adjuvant platinum-taxane chemotherapy. The primary endpoint was overall survival (OS). Secondary endpoints were progression-free survival (PFS) and rate of patients with recurrent ovarian cancer with ascites after combined treatment. Results After five years of follow-up, maintenance therapy dramatically prolonged PFS and OS compared to control. Median OS was 60.0 months (95% CI: 58.0–60.0 months) in arm 1, 60.0 months (95% CI: 60.0–60.0 months) in arms 2 and 3 while 46.0 months (95% СI: 28.0–60.0 months) in arm 4, and 44.0 months (95% СI: 33.0–58.0 months) in arm 5. Median PFS was 39.5 months (95% СI: 28.0–49.0 months) in arm 1, 42.5 months (95% СI: 38.0–49.0 months) in arm 2, 48.5 months (95% СI: 39.0–53.0 months) in arm 3, 24.5 months (95% СI: 14.0–34.0 months) in arm 4, 22.0 months (95% СI: 15.0–26.0 months) in arm 5. The rate of patients with recurrent ovarian cancer with ascites after combined treatment was significantly less in maintenance therapy arms compared to control. Conclusions Long-term usage of I3C and EGCG may represent a new promising way of maintenance therapy in advanced ovarian cancer patients, which achieved better treatment outcomes. Trial registration Retrospectively registered with ANZCTR number: ACTRN12616000394448. Date of registration: 24/03/2016.
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Affiliation(s)
| | - Levon A Ashrafyan
- Russian Scientific Center of Roentgenoradiology, Moscow, Russian Federation
| | - Ekaterina L Muyzhnek
- MiraxBioPharma, Joint-Stock Company, Valovaya Ul., 21, build. 125, Moscow, Russian Federation, 115054.
| | | | - Irina B Antonova
- Russian Scientific Center of Roentgenoradiology, Moscow, Russian Federation
| | - Olga I Aleshikova
- Russian Scientific Center of Roentgenoradiology, Moscow, Russian Federation
| | - Fazlul H Sarkar
- Department of Pathology, Wayne State University (Retired as Distinguished Professor), Detroit, MI, USA
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40
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Murray NP. Minimal residual disease in prostate cancer patients after primary treatment: theoretical considerations, evidence and possible use in clinical management. Biol Res 2018; 51:32. [PMID: 30180883 PMCID: PMC6122199 DOI: 10.1186/s40659-018-0180-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 08/28/2018] [Indexed: 12/16/2022] Open
Abstract
Minimal residual disease is that not detected by conventional imaging studies and clinically the patient remains disease free. However, with time these dormant cells will awaken and disease progression occurs, resulting in clinically and radiological detectable metastatic disease. This review addresses the concept of tumor cell dissemination from the primary tumor, the micrometastatic niche and tumor cell survival and finally the clinical utility of detecting and characterizing these tumor cells in order to guide management decisions in treating patients with prostate cancer.
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Affiliation(s)
- Nigel P Murray
- Circulating Tumor Cell Unit, Faculty of Medicine, University Finis Terrae, Av Pedro de Valdivia 1509, Providencia, Santiago, Chile.
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41
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Skvortsov S, Skvortsova II, Tang DG, Dubrovska A. Concise Review: Prostate Cancer Stem Cells: Current Understanding. Stem Cells 2018; 36:1457-1474. [PMID: 29845679 DOI: 10.1002/stem.2859] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 04/05/2018] [Accepted: 05/01/2018] [Indexed: 12/29/2022]
Abstract
Prostate cancer (PCa) is heterogeneous, harboring phenotypically diverse cancer cell types. PCa cell heterogeneity is caused by genomic instability that leads to the clonal competition and evolution of the cancer genome and by epigenetic mechanisms that result in subclonal cellular differentiation. The process of tumor cell differentiation is initiated from a population of prostate cancer stem cells (PCSCs) that possess many phenotypic and functional properties of normal stem cells. Since the initial reports on PCSCs in 2005, there has been much effort to elucidate their biological properties, including unique metabolic characteristics. In this Review, we discuss the current methods for PCSC enrichment and analysis, the hallmarks of PCSC metabolism, and the role of PCSCs in tumor progression. Stem Cells 2018;36:1457-1474.
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Affiliation(s)
- Sergej Skvortsov
- Laboratory for Experimental and Translational Research on Radiation Oncology (EXTRO-Lab), Department of Therapeutic Radiology and Oncology, Innsbruck Medical University, Innsbruck, Austria.,Tyrolean Cancer Research Institute, Innsbruck, Austria
| | - Ira-Ida Skvortsova
- Laboratory for Experimental and Translational Research on Radiation Oncology (EXTRO-Lab), Department of Therapeutic Radiology and Oncology, Innsbruck Medical University, Innsbruck, Austria.,Tyrolean Cancer Research Institute, Innsbruck, Austria
| | - Dean G Tang
- Department of Pharmacology and Therapeutics, Roswell Park Cancer Institute, Buffalo, New York, USA.,Cancer Stem Cell Institute, Research Center for Translational Medicine, East Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Anna Dubrovska
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden and Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany, Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology-OncoRay, Dresden, Germany; German Cancer Consortium (DKTK), partner site Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany
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42
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Magani F, Bray ER, Martinez MJ, Zhao N, Copello VA, Heidman L, Peacock SO, Wiley DJ, D'Urso G, Burnstein KL. Identification of an oncogenic network with prognostic and therapeutic value in prostate cancer. Mol Syst Biol 2018; 14:e8202. [PMID: 30108134 PMCID: PMC6684952 DOI: 10.15252/msb.20188202] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 07/11/2018] [Accepted: 07/17/2018] [Indexed: 12/15/2022] Open
Abstract
Identifying critical pathways governing disease progression is essential for accurate prognosis and effective therapy. We developed a broadly applicable and novel systems-level gene discovery strategy. This approach focused on constitutively active androgen receptor (AR) splice variant-driven pathways as representative of an intractable mechanism of prostate cancer (PC) therapeutic resistance. We performed a meta-analysis of human prostate samples using weighted gene co-expression network analysis combined with experimental AR variant transcriptome analyses. An AR variant-driven gene module that is upregulated during human PC progression was identified. We filtered this module by identifying genes that functionally interacted with AR variants using a high-throughput synthetic genetic array screen in Schizosaccharomyces pombe This strategy identified seven AR variant-regulated genes that also enhance AR activity and drive cancer progression. Expression of the seven genes predicted poor disease-free survival in large independent PC patient cohorts. Pharmacologic inhibition of interacting members of the gene set potently and synergistically decreased PC cell proliferation. This unbiased and novel gene discovery strategy identified a clinically relevant, oncogenic, interacting gene hub with strong prognostic and therapeutic potential in PC.
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Affiliation(s)
- Fiorella Magani
- Sheila and David Fuente Graduate Program in Cancer Biology, University of Miami Miller School of Medicine, Miami, FL, USA
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Eric R Bray
- Department of Neurological Surgery, Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Maria J Martinez
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Ning Zhao
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Valeria A Copello
- Sheila and David Fuente Graduate Program in Cancer Biology, University of Miami Miller School of Medicine, Miami, FL, USA
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Laine Heidman
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Stephanie O Peacock
- Sheila and David Fuente Graduate Program in Cancer Biology, University of Miami Miller School of Medicine, Miami, FL, USA
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - David J Wiley
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Gennaro D'Urso
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Kerry L Burnstein
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, USA
- Sylvester Comprehensive Cancer Center (SCCC), Miami, FL, USA
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43
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Chen YA, Shih HW, Lin YC, Hsu HY, Wu TF, Tsai CH, Wu CL, Wu HY, Hsieh JT, Tang CH, Lai CH. Simvastatin Sensitizes Radioresistant Prostate Cancer Cells by Compromising DNA Double-Strand Break Repair. Front Pharmacol 2018; 9:600. [PMID: 29950990 PMCID: PMC6008406 DOI: 10.3389/fphar.2018.00600] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 05/18/2018] [Indexed: 12/17/2022] Open
Abstract
Prostate cancer (PCa) is one of the most prevalent male cancers in western world. Radiation therapy (RT) is commonly used to treat PCa patients. However, a certain proportion of patients develop radioresistant PCa cells, which results in metastatic disease. Statins, which inhibit 3-hydroxy-3-methyl glutaryl coenzyme A (HMG-CoA) reductase, are commonly used to treat hypercholesterolemia, exhibiting beneficial effects on cardiovascular diseases and on several types of cancers, including PCa. However, the mechanistic details and crosstalk between statins and RT in PCa cells remain unknown. In this study, radioresistant DOC-2/DAB2 interactive protein (DAB2IP)-deficient PCa cells were used to evaluate whether simvastatin could enhance the effect of ionizing radiation (IR). The crucial molecules that associated with simvastatin elevated radiosensitivity in PCa cells were explored. Our results demonstrated that a combination treatment with simvastatin and IR synergistically induced apoptosis of radioresistant PCa cells. In addition, simvastatin appeared to compromise DNA double-strand breaks repair by activating the expressions of histone 2A family member X (γ-H2AX) and phospho-checkpoint kinase 1 (p-CHK1), suggesting an underlying mechanism for this radiosensitization of PCa cells. These findings reveal that simvastatin may be a potent therapeutic agent for co-treatment with radiation to overcome radioresistance in PCa cells.
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Affiliation(s)
- Yu-An Chen
- Graduate Institute of Basic Medical Science, School of Medicine, China Medical University, Taichung, Taiwan
| | - Hua-Wei Shih
- Graduate Institute of Basic Medical Science, School of Medicine, China Medical University, Taichung, Taiwan
| | - Yi-Chun Lin
- Graduate Institute of Basic Medical Science, School of Medicine, China Medical University, Taichung, Taiwan
| | - Hui-Ying Hsu
- Graduate Institute of Basic Medical Science, School of Medicine, China Medical University, Taichung, Taiwan
| | - Tsu-Fang Wu
- Department of Applied Cosmetology, Hung Kuang University, Taichung, Taiwan
| | - Chen-Han Tsai
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chia-Lin Wu
- Department of Biochemistry, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Molecular Infectious Disease Research Center, Department of Neurology, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Hui-Yu Wu
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Jer-Tsong Hsieh
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Chih-Hsin Tang
- Graduate Institute of Basic Medical Science, School of Medicine, China Medical University, Taichung, Taiwan.,Graduate Institute of Biomedical Sciences, School of Medicine, China Medical University, Taichung, Taiwan
| | - Chih-Ho Lai
- Graduate Institute of Basic Medical Science, School of Medicine, China Medical University, Taichung, Taiwan.,Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Molecular Infectious Disease Research Center, Department of Neurology, Chang Gung Memorial Hospital, Linkou, Taiwan.,Department of Nursing, Asia University, Taichung, Taiwan
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44
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An NFκB-dependent mechanism of tumor cell plasticity and lateral transmission of aggressive features. Oncotarget 2018; 9:26679-26700. [PMID: 29928478 PMCID: PMC6003573 DOI: 10.18632/oncotarget.25465] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Accepted: 05/07/2018] [Indexed: 01/06/2023] Open
Abstract
Breast cancer is a complex disease exhibiting extensive inter- and intra-tumor heterogeneity. Inflammation is a well-known driver of cancer progression, often attributed to immune cells infiltrating the tumor stroma. However, tumor cells themselves are capable to secrete a variety of inflammatory molecules, of which we understand very little about their role in intra-clonal communication. We recently reported the capacity of triple negative cell lines to induce a cancer stem cell (CSC)-like phenotype and invasion properties into luminal cells, a mechanism mediated by pro-inflammatory cytokines that up-regulated the CXCL12/CXCR4/CXCR7 chemokine signaling axis. We performed transcriptional array analyses of CSCs-associated genes and cancer-inflammatory cell crosstalk genes and built regulatory networks with the data collected. We found a specific molecular signature segregating with the induced-invasive/stemness phenotype. Regulatory network analysis pointed out to an NFκB transcriptional signature, active in aggressive triple negative cells and in induced-invasive/CSC-like luminal cells. In agreement, NFκB inhibition abolished the induction of the stemness/invasive features. These data support an NFκB dependent mechanism of intra-clonal communication responsible for tumor cell plasticity leading the acquisition of cancer aggressive features. Understanding the communication between different tumor clones would help to find better therapeutic and prophylactic targets to prevent BrC progression and relapse.
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45
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Zhang L, Xu LJ, Zhu J, Li J, Xue BX, Gao J, Sun CY, Zang YC, Zhou YB, Yang DR, Shan YX. ATM‑JAK‑PD‑L1 signaling pathway inhibition decreases EMT and metastasis of androgen‑independent prostate cancer. Mol Med Rep 2018; 17:7045-7054. [PMID: 29568923 PMCID: PMC5928660 DOI: 10.3892/mmr.2018.8781] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 02/12/2018] [Indexed: 12/19/2022] Open
Abstract
Castration-resistant prostate cancer (CRPC), also known as androgen-independent prostate cancer, frequently develops local and distant metastases, the underlying mechanisms of which remain undetermined. In the present study, surgical specimens obtained from patients with clinical prostate cancer were investigated, and it was revealed that the expression levels of ataxia telangiectasia mutated kinase (ATM) were significantly enhanced in prostate cancer tissues isolated from patients with CRPC compared with from patients with hormone-dependent prostate cancer. CRPC C4-2 and CWR22Rv1 cells lines were subsequently selected to establish prostate cancer models, and ATM knockout cells were established via lentivirus infection. The results of the present study demonstrated that the migration and epithelial-mesenchymal transition (EMT) of ATM knockout cells were significantly decreased, which suggested that ATM is closely associated with CRPC cell migration and EMT. To further investigate the mechanisms underlying this process, programmed cell death 1 ligand 1 (PD-L1) expression was investigated in ATM knockout cells. In addition, inhibitors of Janus kinase (JAK) and signal transducer and activator of transcription 3 (STAT3; Stattic) were added to C4-2-Sc and CWR22Rv1-Sc cells, and the results demonstrated that PD-L1 expression was significantly decreased following the addition of JAK inhibitor 1; however, no significant change was observed following the addition of Stattic. Furthermore, a PD-L1 antibody and JAK inhibitor 1 were added to C4-2-Sc and CWR22Rv1-Sc cells, and it was revealed that cell migration ability was significantly decreased and the expression of EMT-associated markers was effectively reversed. The results of the present study suggested that via inhibition of the ATM-JAK-PD-L1 signaling pathway, EMT, metastasis and progression of CRPC may be effectively suppressed, which may represent a novel therapeutic approach for targeted therapy for patients with CRPC.
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Affiliation(s)
- Lan Zhang
- Emergency Department, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Li-Jun Xu
- Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Jin Zhu
- Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Jian Li
- First Department of Urology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, P.R. China
| | - Bo-Xin Xue
- Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Jie Gao
- Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Chuan-Yang Sun
- Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Ya-Chen Zang
- Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Yi-Bin Zhou
- Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Dong-Rong Yang
- Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Yu-Xi Shan
- Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
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46
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Davies AH, Beltran H, Zoubeidi A. Cellular plasticity and the neuroendocrine phenotype in prostate cancer. Nat Rev Urol 2018; 15:271-286. [PMID: 29460922 DOI: 10.1038/nrurol.2018.22] [Citation(s) in RCA: 253] [Impact Index Per Article: 42.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The success of next-generation androgen receptor (AR) pathway inhibitors, such as abiraterone acetate and enzalutamide, in treating prostate cancer has been hampered by the emergence of drug resistance. This acquired drug resistance is driven, in part, by the ability of prostate cancer cells to change their phenotype to adopt AR-independent pathways for growth and survival. Around one-quarter of resistant prostate tumours comprise cells that have undergone cellular reprogramming to become AR-independent and to acquire a continuum of neuroendocrine characteristics. These highly aggressive and lethal tumours, termed neuroendocrine prostate cancer (NEPC), exhibit reactivation of developmental programmes that are associated with epithelial-mesenchymal plasticity and acquisition of stem-like cell properties. In the past few years, our understanding of the link between lineage plasticity and an emergent NEPC phenotype has considerably increased. This new knowledge can contribute to novel therapeutic modalities that are likely to improve the treatment and clinical management of aggressive prostate cancer.
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Affiliation(s)
- Alastair H Davies
- Vancouver Prostate Centre, 2660 Oak Street, Vancouver, BC, Canada.,Department of Urologic Sciences, Faculty of Medicine, University of British Columbia, 2775 Laurel Street, Vancouver, BC, Canada
| | - Himisha Beltran
- Department of Medicine, Division of Hematology and Medical Oncology, Weill Cornell Medicine, 413 East 69th Street, New York, NY, USA
| | - Amina Zoubeidi
- Vancouver Prostate Centre, 2660 Oak Street, Vancouver, BC, Canada.,Department of Urologic Sciences, Faculty of Medicine, University of British Columbia, 2775 Laurel Street, Vancouver, BC, Canada
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47
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Zoni E, Karkampouna S, Thalmann GN, Kruithof-de Julio M, Spahn M. Emerging aspects of microRNA interaction with TMPRSS2-ERG and endocrine therapy. Mol Cell Endocrinol 2018; 462:9-16. [PMID: 28189568 DOI: 10.1016/j.mce.2017.02.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 12/22/2016] [Accepted: 02/07/2017] [Indexed: 11/22/2022]
Abstract
Prostate cancer (PCa) is the most common malignancy detected in males and the second most common cause of cancer death in western countries. The development of the prostate gland, is finely regulated by androgens which modulate also its growth and function. Importantly, androgens exert a major role in PCa formation and progression and one of the hypothesized mechanism proposed has been linked to the chromosomal rearrangement of the androgen regulated gene TMPRSS2 with ERG. Androgens have been therefore used as main target for therapies in the past. However, despite the development of endocrine therapies (e.g. androgen ablation), when PCa progress, tumors become resistant to this therapeutic castration and patients develop incurable metastases. A strategy to better understand how patients respond to therapy, in order to achieve a better patient stratification, consists in monitoring the levels of small noncoding RNAs (microRNAs). microRNAs are a class of small molecules that regulate protein abundance and their application as biomarkers to monitor disease progression has been intensely studied in the last years. In this review, we highlight the interactions between microRNAs and endocrine-related aspects of PCa in tissues. We focus on the modulation of TMPRSS2-ERG and Glucocorticoid Receptor (GR) by microRNAs and detail the influence of steroidal hormonal therapies on microRNAs expression.
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Affiliation(s)
- Eugenio Zoni
- Urology Research Laboratory, Department of Urology, University of Bern, Bern, Switzerland; Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Sofia Karkampouna
- Urology Research Laboratory, Department of Urology, University of Bern, Bern, Switzerland; Department of Clinical Research, University of Bern, Bern, Switzerland
| | - George N Thalmann
- Urology Research Laboratory, Department of Urology, University of Bern, Bern, Switzerland; Department of Clinical Research, University of Bern, Bern, Switzerland; Department of Urology, Bern University Hospital, Bern, Switzerland
| | - Marianna Kruithof-de Julio
- Urology Research Laboratory, Department of Urology, University of Bern, Bern, Switzerland; Department of Clinical Research, University of Bern, Bern, Switzerland; Urology Research Laboratory, Department of Urology, Leiden University Medical Center, Leiden, The Netherlands
| | - Martin Spahn
- Urology Research Laboratory, Department of Urology, University of Bern, Bern, Switzerland; Department of Urology, Bern University Hospital, Bern, Switzerland.
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48
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Ramamurthy VP, Ramalingam S, Gediya LK, Njar VCO. The retinamide VNLG-152 inhibits f-AR/AR-V7 and MNK-eIF4E signaling pathways to suppress EMT and castration-resistant prostate cancer xenograft growth. FEBS J 2018; 285:1051-1063. [PMID: 29323792 DOI: 10.1111/febs.14383] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 11/27/2017] [Accepted: 01/08/2018] [Indexed: 12/14/2022]
Abstract
VNLG-152 is a novel retinamide (NR) shown to suppress growth and progression of genetically diverse prostate cancer cells via inhibition of androgen receptor signaling and eukaryotic initiation factor 4E (eIF4E) translational machinery. Herein, we report therapeutic effects of VNLG-152 on castration-resistant prostate cancer (CRPC) growth and metastatic phenotype in a CRPC tumor xenograft model. Administration of VNLG-152 significantly and dose-dependently suppressed the growth of aggressive CWR22Rv1 tumors by 63.4% and 76.3% at 10 and 20 mg·kg-1 bw, respectively (P < 0.0001), vs. vehicle with no host toxicity. Strikingly, the expression of full-length androgen receptor (f-AR)/androgen receptor splice variant-7 (AR-V7), mitogen-activated protein kinase-interacting kinases 1 and 2 (MNK1/2), phosphorylated eIF4E and their associated target proteins, including prostate-specific antigen, cyclin D1 and Bcl-2, were strongly decreased in VNLG-152-treated tumors signifying inhibition of f-AR/AR-V7 and MNK-eIF4E signaling in VNLG-152-treated CWR22Rv1 tumors as observed in vitro. VNLG-152 also suppressed the epithelial to mesenchymal transition in CWR22Rv1 tumors as evidenced by repression of N-cadherin, β-catenin, claudin, Slug, Snail, Twist, vimentin and matrix metalloproteinases (MMP-2 and MMP-9) with upsurge in E-cadherin. These results highlight the promising use of VNLG-152 in CRPC therapy and justify its further development towards clinical trials.
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Affiliation(s)
- Vidya P Ramamurthy
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, USA.,Center for Biomolecular Therapeutics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Senthilmurugan Ramalingam
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, USA.,Center for Biomolecular Therapeutics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Lalji K Gediya
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, USA.,Center for Biomolecular Therapeutics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Vincent C O Njar
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, USA.,Center for Biomolecular Therapeutics, University of Maryland School of Medicine, Baltimore, MD, USA.,Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD, USA
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49
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Vlachostergios PJ, Paddock M, Molina AM. Molecular Targeted Therapies of Prostate Cancer. MOLECULAR PATHOLOGY LIBRARY 2018. [DOI: 10.1007/978-3-319-64096-9_29] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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50
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Moon SJ, Jeong BC, Kim HJ, Lim JE, Kwon GY, Kim JH. DBC1 promotes castration-resistant prostate cancer by positively regulating DNA binding and stability of AR-V7. Oncogene 2017; 37:1326-1339. [PMID: 29249800 DOI: 10.1038/s41388-017-0047-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 09/20/2017] [Accepted: 10/09/2017] [Indexed: 12/21/2022]
Abstract
Constitutively active AR-V7, one of the major androgen receptor (AR) splice variants lacking the ligand-binding domain, plays a key role in the development of castration-resistant prostate cancer (CRPC) and anti-androgen resistance. However, our understanding of the regulatory mechanisms of AR-V7-driven transcription is limited. Here we report DBC1 as a key regulator of AR-V7 transcriptional activity and stability in CRPC cells. DBC1 functions as a coactivator for AR-V7 and is required for the expression of AR-V7 target genes including CDH2, a mesenchymal marker linked to CRPC progression. DBC1 is required for recruitment of AR-V7 to its target enhancers and for long-range chromatin looping between the CDH2 enhancer and promoter. Mechanistically, DBC1 enhances DNA-binding activity of AR-V7 by direct interaction and inhibits CHIP E3 ligase-mediated ubiquitination and degradation of AR-V7 by competing with CHIP for AR-V7 binding, thereby stabilizing and activating AR-V7. Importantly, DBC1 depletion suppresses the tumorigenic and metastatic properties of CRPC cells. Our results firmly establish DBC1 as a critical AR-V7 coactivator that plays a key role in the regulation of DNA binding and stability of AR-V7 and has an important physiological role in CRPC progression.
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Affiliation(s)
- Sue Jin Moon
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul, Korea.,Department of Biomedical Sciences, Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea
| | - Byong Chang Jeong
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hwa Jin Kim
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul, Korea.,Department of Biomedical Sciences, Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea
| | - Joung Eun Lim
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ghee Young Kwon
- Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Hoon Kim
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul, Korea. .,Department of Biomedical Sciences, Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea.
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