1
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Obinata D, Takayama K, Inoue S, Takahashi S. Exploring androgen receptor signaling pathway in prostate cancer: A path to new discoveries. Int J Urol 2024; 31:590-597. [PMID: 38345202 DOI: 10.1111/iju.15424] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 01/29/2024] [Indexed: 06/06/2024]
Abstract
Androgen deprivation therapy has achieved significant success in treating prostate cancer through strategies centered on the androgen receptor. However, the emergence of castration-resistant prostate cancer highlights this therapy limitation, underscoring the need to elucidate the mechanisms of treatment resistance. This review aimed to focus on multifaceted resistance mechanisms, including androgen receptor overexpression, splice variants, missense mutations, the involvement of the glucocorticoid receptor, and alterations in coregulators and transcription factors, revealing their roles in castration-resistant prostate cancer progression. These mechanisms promote cell survival and proliferation, depending on the androgen receptor signaling pathway, leading to resistance to conventional therapies. Amplification and mutations in the androgen receptor gene facilitate selective adaptation in treatment-resistant cells, consequently diminishing therapeutic efficacy. Furthermore, the activation of glucocorticoid receptors and aberrant regulation of specific coregulators and transcription factors contribute to the activation of androgen receptor-independent signaling pathways, promoting cell survival and proliferation. These findings hold promise for identifying new targets for treating castration-resistant prostate cancer and developing personalized treatment strategies. The development of future therapies will hinge on precisely targeting the androgen receptor signaling pathway, necessitating a deeper understanding of the molecular targets unique to castration-resistant prostate cancer.
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MESH Headings
- Humans
- Male
- Receptors, Androgen/metabolism
- Receptors, Androgen/genetics
- Signal Transduction
- Prostatic Neoplasms, Castration-Resistant/genetics
- Prostatic Neoplasms, Castration-Resistant/pathology
- Prostatic Neoplasms, Castration-Resistant/metabolism
- Prostatic Neoplasms, Castration-Resistant/therapy
- Prostatic Neoplasms, Castration-Resistant/drug therapy
- Drug Resistance, Neoplasm/genetics
- Cell Proliferation
- Androgen Antagonists/therapeutic use
- Gene Expression Regulation, Neoplastic
- Receptors, Glucocorticoid/metabolism
- Receptors, Glucocorticoid/genetics
- Prostatic Neoplasms/therapy
- Prostatic Neoplasms/metabolism
- Prostatic Neoplasms/pathology
- Prostatic Neoplasms/genetics
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Affiliation(s)
- Daisuke Obinata
- Department of Urology, Nihon University School of Medicine, Tokyo, Japan
| | - Kenichi Takayama
- Department of Systems Aging Science and Medicine, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Satoshi Inoue
- Department of Systems Aging Science and Medicine, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Satoru Takahashi
- Department of Urology, Nihon University School of Medicine, Tokyo, Japan
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2
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Obinata D, Takayama K, Lawrence MG, Funakoshi D, Hara M, Niranjan B, Teng L, Taylor RA, Risbridger GP, Takahashi S, Inoue S. Patient-derived castration-resistant prostate cancer model revealed CTBP2 upregulation mediated by OCT1 and androgen receptor. BMC Cancer 2024; 24:554. [PMID: 38698344 PMCID: PMC11067191 DOI: 10.1186/s12885-024-12298-3] [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: 11/11/2023] [Accepted: 04/22/2024] [Indexed: 05/05/2024] Open
Abstract
BACKGROUND Prostate cancer is dependent on androgen receptor (AR) signaling, and androgen deprivation therapy (ADT) has proven effective in targeting prostate cancer. However, castration-resistant prostate cancer (CRPC) eventually emerges. AR signaling inhibitors (ARSI) have been also used, but resistance to these agents develops due to genetic AR alterations and epigenetic dysregulation. METHODS In this study, we investigated the role of OCT1, a member of the OCT family, in an AR-positive CRPC patient-derived xenograft established from a patient with resistance to ARSI and chemotherapy. We conducted a genome-wide analysis chromatin immunoprecipitation followed by sequencing and bioinformatic analyses using public database. RESULTS Genome-wide analysis of OCT1 target genes in PDX 201.1 A revealed distinct OCT1 binding sites compared to treatment-naïve cells. Bioinformatic analyses revealed that OCT1-regulated genes were associated with cell migration and immune system regulation. In particular, C-terminal Binding Protein 2 (CTBP2), an OCT1/AR target gene, was correlated with poor prognosis and immunosuppressive effects in the tumor microenvironment. Metascape revealed that CTBP2 knockdown affects genes related to the immune response to bacteria. Furthermore, TISIDB analysis suggested the relationship between CTBP2 expression and immune cell infiltration in prostate cancer, suggesting that it may contribute to immune evasion in CRPC. CONCLUSIONS Our findings shed light on the genome-wide network of OCT1 and AR in AR-positive CRPC and highlight the potential role of CTBP2 in immune response and tumor progression. Targeting CTBP2 may represent a promising therapeutic approach for aggressive AR-positive CRPC. Further validation will be required to explore novel therapeutic strategies for CRPC management.
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Affiliation(s)
- Daisuke Obinata
- Department of Urology, Nihon University School of Medicine, 30-1, Ooyaguchikamicho, Itabashi-ku, Tokyo, 173-8610, Japan
- Monash Biomedicine Discovery Institute, Department of Anatomy and Developmental Biology, Monash University, Wellington Road, Clayton, VIC, 3800, Australia
| | - Kenichi Takayama
- Department of Systems Aging Science and Medicine, Tokyo Metropolitan Institute for Geriatrics and Gerontology, 35-2 Sakae-cho, Itabashi-ku Tokyo, Tokyo, 173-0015, Japan
| | - Mitchell G Lawrence
- Monash Biomedicine Discovery Institute, Department of Anatomy and Developmental Biology, Monash University, Wellington Road, Clayton, VIC, 3800, Australia
- Cancer Research Division, Peter MacCallum Cancer Centre, 305 Grattan Street, Parkville, VIC, 3000, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, 305 Grattan Street, Parkville, VIC, 3010, Australia
- Cabrini Institute, Cabrini Health, 183 Wattletree Road, Malvern, VIC, 3144, Australia
| | - Daigo Funakoshi
- Department of Urology, Nihon University School of Medicine, 30-1, Ooyaguchikamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Makoto Hara
- Division of Neurology, Department of Medicine, Nihon University School of Medicine, 30-1, Ooyaguchikamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Birunthi Niranjan
- Monash Biomedicine Discovery Institute, Department of Anatomy and Developmental Biology, Monash University, Wellington Road, Clayton, VIC, 3800, Australia
| | - Linda Teng
- Monash Biomedicine Discovery Institute, Department of Anatomy and Developmental Biology, Monash University, Wellington Road, Clayton, VIC, 3800, Australia
| | - Renea A Taylor
- Cancer Research Division, Peter MacCallum Cancer Centre, 305 Grattan Street, Parkville, VIC, 3000, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, 305 Grattan Street, Parkville, VIC, 3010, Australia
- Cabrini Institute, Cabrini Health, 183 Wattletree Road, Malvern, VIC, 3144, Australia
- Monash Biomedicine Discovery Institute, Department of Physiology, Monash University, Wellington Road, Clayton, VIC, 3800, Australia
| | - Gail P Risbridger
- Monash Biomedicine Discovery Institute, Department of Anatomy and Developmental Biology, Monash University, Wellington Road, Clayton, VIC, 3800, Australia
- Cancer Research Division, Peter MacCallum Cancer Centre, 305 Grattan Street, Parkville, VIC, 3000, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, 305 Grattan Street, Parkville, VIC, 3010, Australia
- Cabrini Institute, Cabrini Health, 183 Wattletree Road, Malvern, VIC, 3144, Australia
| | - Satoru Takahashi
- Department of Urology, Nihon University School of Medicine, 30-1, Ooyaguchikamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Satoshi Inoue
- Department of Systems Aging Science and Medicine, Tokyo Metropolitan Institute for Geriatrics and Gerontology, 35-2 Sakae-cho, Itabashi-ku Tokyo, Tokyo, 173-0015, Japan.
- Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama, 350-1241, Japan.
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Kim SY, Park JE, Lee HJ, Sim DY, Ahn CH, Park SY, Shim BS, Kim B, Lee DY, Kim SH. Astragalus membranaceus Extract Induces Apoptosis via Generation of Reactive Oxygen Species and Inhibition of Heat Shock Protein 27 and Androgen Receptor in Prostate Cancers. Int J Mol Sci 2024; 25:2799. [PMID: 38474045 DOI: 10.3390/ijms25052799] [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: 12/08/2023] [Revised: 01/31/2024] [Accepted: 02/07/2024] [Indexed: 03/14/2024] Open
Abstract
Although Astragalus membranaceus is known to have anti-inflammatory, anti-obesity, and anti-oxidant properties, the underlying apoptotic mechanism of Astragalus membranaceus extract has never been elucidated in prostate cancer. In this paper, the apoptotic mechanism of a water extract from the dried root of Astragalus membranaceus (WAM) was investigated in prostate cancer cells in association with heat shock protein 27 (HSP27)/androgen receptor (AR) signaling. WAM increased cytotoxicity and the sub-G1 population, cleaved poly (ADP-ribose) polymerase (PARP) and cysteine aspartyl-specific protease 3 (caspase 3), and attenuated the expression of B-cell lymphoma 2 (Bcl-2) in LNCaP cells after 24 h of exposure. Consistently, WAM significantly increased the number of terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL)-positive LNCaP cells. WAM decreased the phosphorylation of HSP27 on Ser82 and inhibited the expression of the AR and prostate-specific antigen (PSA), along with reducing the nuclear translocation of p-HSP27 and the AR via the disturbed binding of p-HSP27 with the AR in LNCaP cells. WAM consistently inhibited the expression of the AR and PSA in dihydrotestosterone (DHT)-treated LNCaP cells. WAM also suppressed AR stability, both in the presence and absence of cycloheximide, in LNCaP cells. Taken together, these findings provide evidence that WAM induces apoptosis via the inhibition of HSP27/AR signaling in prostate cancer cells and is a potent anticancer candidate for prostate cancer treatment.
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Affiliation(s)
- Seok-Young Kim
- College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Ji Eon Park
- College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hyo-Jung Lee
- College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Deok Yong Sim
- College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Chi-Hoon Ahn
- College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Su-Yeon Park
- College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Bum-Sang Shim
- College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Bonglee Kim
- College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Dae Young Lee
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong 27709, Republic of Korea
| | - Sung-Hoon Kim
- College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
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4
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Pimenta R, Malulf FC, Romão P, Caetano GVB, da Silva KS, Ghazarian V, Dos Santos GA, Guimarães V, Silva IA, de Camargo JA, Recuero S, Melão BVLA, Antunes AA, Srougi M, Nahas W, Leite KRM, Reis ST. Evaluation of AR, AR-V7, and p160 family as biomarkers for prostate cancer: insights into the clinical significance and disease progression. J Cancer Res Clin Oncol 2024; 150:70. [PMID: 38305916 PMCID: PMC10837222 DOI: 10.1007/s00432-023-05598-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 12/25/2023] [Indexed: 02/03/2024]
Abstract
PURPOSE To assess the role of the p160 family, AR, and AR-V7 in different initial presentations of prostate cancer and their association with clinical endpoints related to tumor progression. METHODS The study sample comprises 155 patients who underwent radical prostatectomy and 11 healthy peripheral zone biopsies as the control group. Gene expression was quantified by qPCR from the tissue specimens. The statistical analysis investigated correlations between gene expression levels, associations with disease presence, and clinicopathological features. Additionally, ROC curves were applied for distinct PCa presentations, and time-to-event analysis was used for clinical endpoints. RESULTS The AR-V7 diagnostic performance for any PCa yielded an AUC of 0.77 (p < 0.05). For locally advanced PCa, the AR-V7 AUC was 0.65 (p < 0.05). Moreover, the metastasis group had a higher expression of SRC-1 than the non-metastatic group (p < 0.05), showing a shorter time to metastasis in the over-expressed group (p = 0.005). Patients with disease recurrence had super-expression of AR levels (p < 0.0005), with a shorter time-to-recurrence in the super-expression group (p < 0.0001). CONCLUSION Upregulation of SRC-1 indicates a higher risk of progression to metastatic disease in a shorter period, which warrants further research to be applied as a clinical tool. Additionally, AR may be used as a predictor for PCa recurrence. Furthermore, AR-V7 may be helpful as a diagnostic tool for PCa and locally advanced cancer, comparable with other investigated tools.
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Affiliation(s)
- Ruan Pimenta
- Laboratório de Investigação Médica 55 (LIM55), Faculdade de Medicina, Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, 2° andar, Sala 2145, Cerqueira Cesar, São Paulo, SP, CEP: 01246-903, Brazil.
- D'Or Institute for Research and Education (ID'Or), São Paulo, SP, 04501000, Brazil.
| | - Feres Camargo Malulf
- Laboratório de Investigação Médica 55 (LIM55), Faculdade de Medicina, Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, 2° andar, Sala 2145, Cerqueira Cesar, São Paulo, SP, CEP: 01246-903, Brazil
| | - Poliana Romão
- Laboratório de Investigação Médica 55 (LIM55), Faculdade de Medicina, Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, 2° andar, Sala 2145, Cerqueira Cesar, São Paulo, SP, CEP: 01246-903, Brazil
| | - Giovana Vilas Boas Caetano
- Laboratório de Investigação Médica 55 (LIM55), Faculdade de Medicina, Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, 2° andar, Sala 2145, Cerqueira Cesar, São Paulo, SP, CEP: 01246-903, Brazil
| | - Karina Serafim da Silva
- Laboratório de Investigação Médica 55 (LIM55), Faculdade de Medicina, Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, 2° andar, Sala 2145, Cerqueira Cesar, São Paulo, SP, CEP: 01246-903, Brazil
| | - Vitoria Ghazarian
- Laboratório de Investigação Médica 55 (LIM55), Faculdade de Medicina, Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, 2° andar, Sala 2145, Cerqueira Cesar, São Paulo, SP, CEP: 01246-903, Brazil
| | - Gabriel A Dos Santos
- Laboratório de Investigação Médica 55 (LIM55), Faculdade de Medicina, Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, 2° andar, Sala 2145, Cerqueira Cesar, São Paulo, SP, CEP: 01246-903, Brazil
| | - Vanessa Guimarães
- Laboratório de Investigação Médica 55 (LIM55), Faculdade de Medicina, Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, 2° andar, Sala 2145, Cerqueira Cesar, São Paulo, SP, CEP: 01246-903, Brazil
| | - Iran Amorim Silva
- Laboratório de Investigação Médica 55 (LIM55), Faculdade de Medicina, Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, 2° andar, Sala 2145, Cerqueira Cesar, São Paulo, SP, CEP: 01246-903, Brazil
| | - Juliana Alves de Camargo
- Laboratório de Investigação Médica 55 (LIM55), Faculdade de Medicina, Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, 2° andar, Sala 2145, Cerqueira Cesar, São Paulo, SP, CEP: 01246-903, Brazil
| | - Saulo Recuero
- Division of Urology, Clinics Hospital, University of São Paulo Medical School, São Paulo, Brazil
| | | | - Alberto Azoubel Antunes
- Division of Urology, Clinics Hospital, University of São Paulo Medical School, São Paulo, Brazil
| | - Miguel Srougi
- Laboratório de Investigação Médica 55 (LIM55), Faculdade de Medicina, Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, 2° andar, Sala 2145, Cerqueira Cesar, São Paulo, SP, CEP: 01246-903, Brazil
- D'Or Institute for Research and Education (ID'Or), São Paulo, SP, 04501000, Brazil
| | - William Nahas
- Uro-Oncology Group, Urology Department, Institute of Cancer State of São Paulo (ICESP), São Paulo, SP, 01246000, Brazil
| | - Katia R M Leite
- Laboratório de Investigação Médica 55 (LIM55), Faculdade de Medicina, Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, 2° andar, Sala 2145, Cerqueira Cesar, São Paulo, SP, CEP: 01246-903, Brazil
| | - Sabrina T Reis
- Laboratório de Investigação Médica 55 (LIM55), Faculdade de Medicina, Hospital das Clínicas HCFMUSP, Universidade de São Paulo, Av. Dr. Arnaldo 455, 2° andar, Sala 2145, Cerqueira Cesar, São Paulo, SP, CEP: 01246-903, Brazil
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5
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Adamson B, Brittain N, Walker L, Duncan R, Luzzi S, Rescigno P, Smith G, McGill S, Burchmore RJ, Willmore E, Hickson I, Robson CN, Bogdan D, Jimenez-Vacas JM, Paschalis A, Welti J, Yuan W, McCracken SR, Heer R, Sharp A, de Bono JS, Gaughan L. The catalytic subunit of DNA-PK regulates transcription and splicing of AR in advanced prostate cancer. J Clin Invest 2023; 133:e169200. [PMID: 37751307 PMCID: PMC10645393 DOI: 10.1172/jci169200] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 09/21/2023] [Indexed: 09/27/2023] Open
Abstract
Aberrant androgen receptor (AR) signaling drives prostate cancer (PC), and it is a key therapeutic target. Although initially effective, the generation of alternatively spliced AR variants (AR-Vs) compromises efficacy of treatments. In contrast to full-length AR (AR-FL), AR-Vs constitutively activate androgenic signaling and are refractory to the current repertoire of AR-targeting therapies, which together drive disease progression. There is an unmet clinical need, therefore, to develop more durable PC therapies that can attenuate AR-V function. Exploiting the requirement of coregulatory proteins for AR-V function has the capacity to furnish tractable routes for attenuating persistent oncogenic AR signaling in advanced PC. DNA-PKcs regulates AR-FL transcriptional activity and is upregulated in both early and advanced PC. We hypothesized that DNA-PKcs is critical for AR-V function. Using a proximity biotinylation approach, we demonstrated that the DNA-PK holoenzyme is part of the AR-V7 interactome and is a key regulator of AR-V-mediated transcription and cell growth in models of advanced PC. Crucially, we provide evidence that DNA-PKcs controls global splicing and, via RBMX, regulates the maturation of AR-V and AR-FL transcripts. Ultimately, our data indicate that targeting DNA-PKcs attenuates AR-V signaling and provide evidence that DNA-PKcs blockade is an effective therapeutic option in advanced AR-V-positive patients with PC.
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Affiliation(s)
- Beth Adamson
- Newcastle University Centre for Cancer, Paul O’Gorman Building, Newcastle Upon Tyne, United Kingdom
| | - Nicholas Brittain
- Newcastle University Centre for Cancer, Paul O’Gorman Building, Newcastle Upon Tyne, United Kingdom
| | - Laura Walker
- Newcastle University Centre for Cancer, Paul O’Gorman Building, Newcastle Upon Tyne, United Kingdom
| | - Ruaridh Duncan
- Newcastle University Centre for Cancer, Paul O’Gorman Building, Newcastle Upon Tyne, United Kingdom
| | - Sara Luzzi
- Newcastle University Biosciences Institute, International Centre for Life, Newcastle Upon Tyne, United Kingdom
| | - Pasquale Rescigno
- Newcastle University Centre for Cancer, Paul O’Gorman Building, Newcastle Upon Tyne, United Kingdom
| | - Graham Smith
- Newcastle University Bioinformatics Support Unit, Medical School, Newcastle Upon Tyne, United Kingdom
| | - Suzanne McGill
- Glasgow Polyomics, Wolfson Wohl Cancer Research Centre, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Richard J.S. Burchmore
- Glasgow Polyomics, Wolfson Wohl Cancer Research Centre, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Elaine Willmore
- Newcastle University Centre for Cancer, Paul O’Gorman Building, Newcastle Upon Tyne, United Kingdom
| | - Ian Hickson
- Newcastle University Centre for Cancer, Paul O’Gorman Building, Newcastle Upon Tyne, United Kingdom
| | - Craig N. Robson
- Newcastle University Centre for Cancer, Paul O’Gorman Building, Newcastle Upon Tyne, United Kingdom
| | - Denisa Bogdan
- The Institute for Cancer Research, London, United Kingdom
| | | | - Alec Paschalis
- The Institute for Cancer Research, London, United Kingdom
- The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - Jonathan Welti
- The Institute for Cancer Research, London, United Kingdom
| | - Wei Yuan
- The Institute for Cancer Research, London, United Kingdom
| | - Stuart R. McCracken
- Newcastle University Centre for Cancer, Paul O’Gorman Building, Newcastle Upon Tyne, United Kingdom
| | - Rakesh Heer
- Newcastle University Centre for Cancer, Paul O’Gorman Building, Newcastle Upon Tyne, United Kingdom
- Division of Surgery, Imperial College London, London, United Kingdom
| | - Adam Sharp
- The Institute for Cancer Research, London, United Kingdom
- The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - Johann S. de Bono
- The Institute for Cancer Research, London, United Kingdom
- The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - Luke Gaughan
- Newcastle University Centre for Cancer, Paul O’Gorman Building, Newcastle Upon Tyne, United Kingdom
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6
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Silvestri R, Nicolì V, Gangadharannambiar P, Crea F, Bootman MD. Calcium signalling pathways in prostate cancer initiation and progression. Nat Rev Urol 2023; 20:524-543. [PMID: 36964408 DOI: 10.1038/s41585-023-00738-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/06/2023] [Indexed: 03/26/2023]
Abstract
Cancer cells proliferate, differentiate and migrate by repurposing physiological signalling mechanisms. In particular, altered calcium signalling is emerging as one of the most widespread adaptations in cancer cells. Remodelling of calcium signalling promotes the development of several malignancies, including prostate cancer. Gene expression data from in vitro, in vivo and bioinformatics studies using patient samples and xenografts have shown considerable changes in the expression of various components of the calcium signalling toolkit during the development of prostate cancer. Moreover, preclinical and clinical evidence suggests that altered calcium signalling is a crucial component of the molecular re-programming that drives prostate cancer progression. Evidence points to calcium signalling re-modelling, commonly involving crosstalk between calcium and other cellular signalling pathways, underpinning the onset and temporal progression of this disease. Discrete alterations in calcium signalling have been implicated in hormone-sensitive, castration-resistant and aggressive variant forms of prostate cancer. Hence, modulation of calcium signals and downstream effector molecules is a plausible therapeutic strategy for both early and late stages of prostate cancer. Based on this premise, clinical trials have been undertaken to establish the feasibility of targeting calcium signalling specifically for prostate cancer.
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Affiliation(s)
| | - Vanessa Nicolì
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | | | - Francesco Crea
- Cancer Research Group, School of Life Health and Chemical Sciences, The Open University, Milton Keynes, UK
| | - Martin D Bootman
- Cancer Research Group, School of Life Health and Chemical Sciences, The Open University, Milton Keynes, UK.
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7
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Shree B, Das K, Sharma V. Emerging role of transforming growth factor-β-regulated long non-coding RNAs in prostate cancer pathogenesis. CANCER PATHOGENESIS AND THERAPY 2023; 1:195-204. [PMID: 38327834 PMCID: PMC10846338 DOI: 10.1016/j.cpt.2022.12.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 12/01/2022] [Accepted: 12/20/2022] [Indexed: 02/09/2024]
Abstract
Prostate cancer (PCa) is the most common malignancy in men. Despite aggressive therapy involving surgery and hormonal treatments, the recurrence and emergence of metastatic castration-resistant prostate cancer (CRPCa) remain a major challenge. Dysregulation of the transforming growth factor-β (TGF-β) signaling pathway is crucial to PCa development and progression. This also contributes to androgen receptor activation and the emergence of CRPC. In addition, TGF-β signaling regulates long non-coding RNA (lncRNA) expression in multiple cancers, including PCa. Here, we discuss the complex regulatory network of lncRNAs and TGF-β signaling in PCa and their potential applications in diagnosing, prognosis, and treating PCa. Further investigations on the role of lncRNAs in the TGF-β pathway will help to better understand PCa pathogenesis.
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Affiliation(s)
- Bakhya Shree
- Department of Biological Sciences, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Koyel Das
- Department of Biological Sciences, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Vivek Sharma
- Department of Biological Sciences, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad 500078, India
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8
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Ravindran F, Jain A, Desai S, Menon N, Srivastava K, Bawa PS, Sateesh K, Srivatsa N, Raghunath SK, Srinivasan S, Choudhary B. Whole-exome sequencing of Indian prostate cancer reveals a novel therapeutic target: POLQ. J Cancer Res Clin Oncol 2023; 149:2451-2462. [PMID: 35737091 DOI: 10.1007/s00432-022-04111-0] [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: 04/21/2022] [Accepted: 06/03/2022] [Indexed: 11/25/2022]
Abstract
PURPOSE Prostate cancer is the second most common cancer diagnosed worldwide and the third most common cancer among men in India. This study's objective was to characterise the mutational landscape of Indian prostate cancer using whole-exome sequencing to identify population-specific polymorphisms. METHODS Whole-exome sequencing was performed of 58 treatment-naive primary prostate tumors of Indian origin. Multiple computational and statistical analyses were used to profile the known common mutations, other deleterious mutations, driver genes, prognostic biomarkers, and gene signatures unique to each clinical parameter. Cox analysis was performed to validate survival-associated genes. McNemar test identified genes significant to recurrence and receiver-operating characteristic (ROC) analysis was conducted to determine its accuracy. OncodriveCLUSTL algorithm was used to deduce driver genes. The druggable target identified was modeled with its known inhibitor using Autodock. RESULTS TP53 was the most commonly mutated gene in our cohort. Three novel deleterious variants unique to the Indian prostate cancer subtype were identified: POLQ, FTHL17, and OR8G1. COX regression analysis identified ACSM5, a mitochondrial gene responsible for survival. CYLC1 gene, which encodes for sperm head cytoskeletal protein, was identified as an unfavorable prognostic biomarker indicative of recurrence. The novel POLQ mutant, also identified as a driver gene, was evaluated as the druggable target in this study. POLQ, a DNA repair enzyme implicated in various cancer types, is overexpressed and is associated with a poor prognosis. The mutant POLQ was subjected to structural analysis and modeled with its known inhibitor novobiocin resulting in decreased binding efficiency necessitating the development of a better drug. CONCLUSION In this pilot study, the molecular profiling using multiple computational and statistical analyses revealed distinct polymorphisms in the Indian prostate cancer cohort. The mutational signatures identified provide a valuable resource for prognostic stratification and targeted treatment strategies for Indian prostate cancer patients. The DNA repair enzyme, POLQ, was identified as the druggable target in this study.
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Affiliation(s)
- Febina Ravindran
- Institute of Bioinformatics and Applied Biotechnology, Electronic City Phase 1, Bangalore, Karnataka, India
| | - Anika Jain
- Institute of Bioinformatics and Applied Biotechnology, Electronic City Phase 1, Bangalore, Karnataka, India
| | - Sagar Desai
- Institute of Bioinformatics and Applied Biotechnology, Electronic City Phase 1, Bangalore, Karnataka, India
- Manipal Academy of Higher Education, Manipal, India
| | - Navjoth Menon
- Institute of Bioinformatics and Applied Biotechnology, Electronic City Phase 1, Bangalore, Karnataka, India
| | - Kriti Srivastava
- Institute of Bioinformatics and Applied Biotechnology, Electronic City Phase 1, Bangalore, Karnataka, India
| | - Pushpinder Singh Bawa
- Institute of Bioinformatics and Applied Biotechnology, Electronic City Phase 1, Bangalore, Karnataka, India
| | - K Sateesh
- Healthcare Global Enterprises Ltd, Cancer Centre, Bangalore, India
| | - N Srivatsa
- Healthcare Global Enterprises Ltd, Cancer Centre, Bangalore, India
| | - S K Raghunath
- Healthcare Global Enterprises Ltd, Cancer Centre, Bangalore, India
| | - Subhashini Srinivasan
- Institute of Bioinformatics and Applied Biotechnology, Electronic City Phase 1, Bangalore, Karnataka, India
| | - Bibha Choudhary
- Institute of Bioinformatics and Applied Biotechnology, Electronic City Phase 1, Bangalore, Karnataka, India.
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9
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Obinata D, Hashimoto S, Uchida H, Nakahara K, Yoshizawa T, Mochida J, Yamaguchi K, Takahashi S. Clinical characteristics of patients with metastatic castration-resistant prostate cancer after treatment with combined androgen blockade. BMC Urol 2023; 23:74. [PMID: 37118708 PMCID: PMC10148407 DOI: 10.1186/s12894-023-01233-6] [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: 02/18/2023] [Accepted: 04/02/2023] [Indexed: 04/30/2023] Open
Abstract
BACKGROUND Although the second-generation androgen receptor inhibitors and taxanes have recently been recommended for the initial treatment of metastatic prostate cancer, bicalutamide and flutamide are still used in a large number of cases. Therefore, it is important to elucidate the clinical characteristics of these treated CRPC cases and their sensitivity to the currently used therapeutic agents. We aimed to examine the outcomes of metastatic castration-resistant prostate cancer following combined androgen blockade as initial therapy at our institution. METHODS Ninety-four patients who developed metastatic castration-resistant prostate cancer after hormonal treatment with combined nonsteroidal androgen receptor antagonists and continuous androgen deprivation therapy between January 2015 and December 2020 were included. The presence of visceral metastases, duration of efficacy of each treatment, and overall survival after castration-resistant prostate cancer were evaluated. RESULTS Patients with a longer duration of castration-resistant prostate cancer tended to have a longer response duration to subsequent enzalutamide administration (p = 0.003). Patients who achieved a 90% reduction in prostate-specific antigen levels with enzalutamide had a significantly better castration-resistant prostate cancer prognosis (p = 0.002). Meanwhile, those with visceral metastases at the time of castration-resistant prostate cancer diagnosis had a significantly poorer prognosis (p < 0.001). A positive correlation was observed between the treatment efficacy of abiraterone and taxanes for castration-resistant prostate cancer. CONCLUSION The study provides scientific evidence to support that patients with longer time to castration-resistant prostate cancer are more sensitive to enzalutamide, and the use of abiraterone between docetaxel and cabazitaxel has favorable prognostic impact. These findings provide instrumental evidence that can enable better treatment selection for prostate cancer patients.
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Affiliation(s)
- Daisuke Obinata
- Department of Urology, Nihon University School of Medicine, 30-1, Oyaguchikamicho, Itabashi-Ku, Tokyo, 173-8610, Japan
| | - Sho Hashimoto
- Department of Urology, Nihon University School of Medicine, 30-1, Oyaguchikamicho, Itabashi-Ku, Tokyo, 173-8610, Japan
| | - Hideaki Uchida
- Department of Urology, Nihon University School of Medicine, 30-1, Oyaguchikamicho, Itabashi-Ku, Tokyo, 173-8610, Japan
| | - Ken Nakahara
- Department of Urology, Nihon University School of Medicine, 30-1, Oyaguchikamicho, Itabashi-Ku, Tokyo, 173-8610, Japan
| | - Tsuyoshi Yoshizawa
- Department of Urology, Nihon University School of Medicine, 30-1, Oyaguchikamicho, Itabashi-Ku, Tokyo, 173-8610, Japan
| | - Junichi Mochida
- Department of Urology, Nihon University School of Medicine, 30-1, Oyaguchikamicho, Itabashi-Ku, Tokyo, 173-8610, Japan
| | - Kenya Yamaguchi
- Department of Urology, Nihon University School of Medicine, 30-1, Oyaguchikamicho, Itabashi-Ku, Tokyo, 173-8610, Japan.
| | - Satoru Takahashi
- Department of Urology, Nihon University School of Medicine, 30-1, Oyaguchikamicho, Itabashi-Ku, Tokyo, 173-8610, Japan
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10
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Chen HK, Su PJ, Wang YL, Chang KC, Su YL, Chang PH, Kuan FC, Hsieh CH, Kuo YC, Sheng TW, Chang CF, Yu SM, Huang WK, Lin YC, Tsan DL, Yu KJ, Lin PH, Chen HY, Chang YH, Pang ST, Chuang CK, Lai ECC. Long-term use and risk of major adverse cardiac events: Comparing enzalutamide and abiraterone in chemotherapy-naïve patients with metastatic castration-resistant prostate cancer. Int J Cancer 2023; 152:1191-1201. [PMID: 36346116 DOI: 10.1002/ijc.34348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 09/18/2022] [Accepted: 10/11/2022] [Indexed: 11/11/2022]
Abstract
This is a retrospective cohort study by analyzing a multi-institutional electronic medical records database in Taiwan to compare long-term effectiveness and risk of major adverse cardiac events (MACE) in chemotherapy-naïve metastatic castration-resistant prostate cancer (mCRPC) patients treated with enzalutamide (ENZ) or abiraterone (AA). Patients aged 20 years and older and newly receiving androgen receptor targeted therapies ENZ or AA from September 2016 to December 2019 were included. We followed patients from initiation of therapies to the occurrence of outcomes (prostate-specific antigen (PSA) response rate, PSA progression free survival (PFS), overall survival (OS), and MACE), death, the last clinical visit, or December 31, 2020. We performed multivariable Cox proportional hazard models to compare ENZ and AA groups for the measured outcomes. A total of 363 patients treated with either ENZ (n = 157) or AA (n = 206) were identified. The analysis found a significantly higher proportion of patients with a PSA response rate higher than 50% among those receiving ENZ than among those receiving AA (ENZ vs AA: 75.80% vs 63.59%, P = .01). However, there was no significant difference in PSA PFS (adjusted hazard ratio: 0.86; 95% CI 0.63-1.17) and OS (0.68: 0.41-1.14) between the use of ENZ and AA in chemotherapy-naïve mCRPC patients. Regarding the cardiovascular (CV) safety outcome, there was a significantly lower risk of MACE in patients receiving ENZ, compared to patients receiving AA (0.20: 0.07-0.55). The findings suggest that enzalutamide may be more efficacious for PSA response and suitable for chemotherapy-naïve mCRPC patients with high CV risk profile.
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Affiliation(s)
- Hung-Kai Chen
- Division of Hematology Oncology, Department of Internal Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Department of Pharmacy, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Po-Jung Su
- Division of Hematology Oncology, Department of Internal Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Yan-Lin Wang
- Department of Pharmacy, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Kai-Cheng Chang
- Department of Pharmacy, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.,School of Pharmacy, Institute of Clinical Pharmacy and Pharmaceutical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Li Su
- Division of Hematology Oncology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, College of Medicine, Kaohsiung, Taiwan.,School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Clinical Trial Center, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Pei-Hung Chang
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Division of Hematology Oncology, Department of Internal Medicine, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Feng-Che Kuan
- Division of Hematology Oncology, Department of Internal Medicine, Chiayi Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Chia-Hsun Hsieh
- Division of Hematology Oncology, Department of Internal Medicine, New Taipei Municipal TuCheng Hospital, New Taipei, Taiwan
| | - Yung-Chia Kuo
- Division of Hematology Oncology, Department of Internal Medicine, New Taipei Municipal TuCheng Hospital, New Taipei, Taiwan.,Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Ting-Wen Sheng
- Department of Medical Imaging and Intervention, New Taipei Municipal TuCheng Hospital, New Taipei, Taiwan
| | - Ching-Fu Chang
- Division of Hematology Oncology, Department of Internal Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Shao-Ming Yu
- Division of Hematology Oncology, Department of Internal Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Wen-Kuan Huang
- Division of Hematology Oncology, Department of Internal Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Yung-Chang Lin
- Division of Hematology Oncology, Department of Internal Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Din-Li Tsan
- Department of Radiation Oncology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Department of Radiation Oncology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Kai-Jie Yu
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Division of Urology, Department of Surgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Department of Chemical Engineering and Biotechnology and Graduate Institute of Biochemical and Biomedical Engineering, National Taipei University of Technology, Taipei, Taiwan
| | - Po-Hung Lin
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Division of Urology, Department of Surgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Hui-Yu Chen
- Department of Pharmacy, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Ying-Hsu Chang
- Department of Urology, New Taipei Municipal TuCheng Hospital, New Taipei, Taiwan
| | - See-Tong Pang
- Division of Urology, Department of Surgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Cheng-Keng Chuang
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Division of Urology, Department of Surgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Edward Chia-Cheng Lai
- School of Pharmacy, Institute of Clinical Pharmacy and Pharmaceutical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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11
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Ramesh S, Selvakumar P, Ameer MY, Lian S, Abdullah Alzarooni AIM, Ojha S, Mishra A, Tiwari A, Kaushik A, Jung YD, Chouaib S, Lakshmanan VK. State-of-the-art therapeutic strategies for targeting cancer stem cells in prostate cancer. Front Oncol 2023; 13:1059441. [PMID: 36969009 PMCID: PMC10035756 DOI: 10.3389/fonc.2023.1059441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 01/30/2023] [Indexed: 03/11/2023] Open
Abstract
The development of new therapeutic strategies is on the increase for prostate cancer stem cells, owing to current standardized therapies for prostate cancer, including chemotherapy, androgen deprivation therapy (ADT), radiotherapy, and surgery, often failing because of tumor relapse ability. Ultimately, tumor relapse develops into advanced castration-resistant prostate cancer (CRPC), which becomes an irreversible and systemic disease. Hence, early identification of the intracellular components and molecular networks that promote prostate cancer is crucial for disease management and therapeutic intervention. One of the potential therapeutic methods for aggressive prostate cancer is to target prostate cancer stem cells (PCSCs), which appear to be a primary focal point of cancer metastasis and recurrence and are resistant to standardized therapies. PCSCs have also been documented to play a major role in regulating tumorigenesis, sphere formation, and the metastasis ability of prostate cancer with their stemness features. Therefore, the current review highlights the origin and identification of PCSCs and their role in anti-androgen resistance, as well as stemness-related signaling pathways. In addition, the review focuses on the current advanced therapeutic strategies for targeting PCSCs that are helping to prevent prostate cancer initiation and progression, such as microRNAs (miRNAs), nanotechnology, chemotherapy, immunotherapy, the clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9) gene-editing system, and photothermal ablation (PTA) therapy.
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Affiliation(s)
- Saravanan Ramesh
- Prostate Cancer Biomarker Laboratory, Faculty of Clinical Research, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - Preethi Selvakumar
- Prostate Cancer Biomarker Laboratory, Faculty of Clinical Research, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - Mohamed Yazeer Ameer
- Prostate Cancer Biomarker Laboratory, Faculty of Clinical Research, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - Sen Lian
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | | | - Shreesh Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Anshuman Mishra
- Translational Research & Sustainable Healthcare Management, Institute of Advanced Materials, IAAM, Ulrika, Sweden
| | - Ashutosh Tiwari
- Translational Research & Sustainable Healthcare Management, Institute of Advanced Materials, IAAM, Ulrika, Sweden
| | - Ajeet Kaushik
- NanoBioTech Laboratory, Department of Environmental Engineering, Florida Polytechnic University, Lakeland, FL, United States
- School of Engineering, University of Petroleum and Energy Studies (UPES), Dehradun, India
| | - Young Do Jung
- Department of Biochemistry, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Salem Chouaib
- Thumbay Research Institute for Precision Medicine, Gulf Medical University, Ajman, United Arab Emirates
- INSERM UMR1186, Integrative Tumor Immunology and Genetic Oncology, Gustave Roussy, Equipe Labellisée par la Ligue Contre le Cancer, EPHE, Faculté de Médecine, Université Paris-Sud, Université Paris-Saclay, Villejuif, France
| | - Vinoth-Kumar Lakshmanan
- Prostate Cancer Biomarker Laboratory, Faculty of Clinical Research, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
- Translational Research & Sustainable Healthcare Management, Institute of Advanced Materials, IAAM, Ulrika, Sweden
- *Correspondence: Vinoth-Kumar Lakshmanan,
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12
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Koroleva OA, Dutikova YV, Trubnikov AV, Zenov FA, Manasova EV, Shtil AA, Kurkin AV. PROTAC: targeted drug strategy. Principles and limitations. Russ Chem Bull 2022; 71:2310-2334. [PMID: 36569659 PMCID: PMC9762658 DOI: 10.1007/s11172-022-3659-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/08/2022] [Accepted: 06/20/2022] [Indexed: 12/23/2022]
Abstract
The PROTAC (PROteolysis TArgeting Chimera) technology is a method of targeting intracellular proteins previously considered undruggable. This technology utilizes the ubiquitin-proteasome system in cells to specifically degrade target proteins, thereby offering significant advantages over conventional small-molecule inhibitors of the enzymatic function. Preclinical and preliminary clinical trials of PROTAC-based compounds (degraders) are presented. The review considers the general principles of the design of degraders. Advances and challenges of the PROTAC technology are discussed.
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Affiliation(s)
- O. A. Koroleva
- Department of Chemistry, Lomonosov Moscow State University, Build. 3, 1 Leninskie Gory, 119991 Moscow, Russian Federation
| | - Yu. V. Dutikova
- Patent & Law Firm “A. Zalesov and Partners”, Build. 9, 2 ul. Marshala Rybalko, 123060 Moscow, Russian Federation
| | - A. V. Trubnikov
- Department of Chemistry, Lomonosov Moscow State University, Build. 3, 1 Leninskie Gory, 119991 Moscow, Russian Federation
| | - F. A. Zenov
- Department of Chemistry, Lomonosov Moscow State University, Build. 3, 1 Leninskie Gory, 119991 Moscow, Russian Federation
| | - E. V. Manasova
- Department of Chemistry, Lomonosov Moscow State University, Build. 3, 1 Leninskie Gory, 119991 Moscow, Russian Federation
| | - A. A. Shtil
- Department of Chemistry, Lomonosov Moscow State University, Build. 3, 1 Leninskie Gory, 119991 Moscow, Russian Federation
- N. N. Blokhin National Medical Research Center of Oncology, Ministry of Health of the Russian Federation, Build. 15, 24 Kashirskoe shosse, 115478 Moscow, Russian Federation
| | - A. V. Kurkin
- Department of Chemistry, Lomonosov Moscow State University, Build. 3, 1 Leninskie Gory, 119991 Moscow, Russian Federation
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13
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Metabolic changes during prostate cancer development and progression. J Cancer Res Clin Oncol 2022; 149:2259-2270. [PMID: 36151426 PMCID: PMC10097763 DOI: 10.1007/s00432-022-04371-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 09/18/2022] [Indexed: 10/14/2022]
Abstract
Metabolic reprogramming has been recognised as a hallmark in solid tumours. Malignant modification of the tumour's bioenergetics provides energy for tumour growth and progression. Otto Warburg first reported these metabolic and biochemical changes in 1927. In prostate cancer (PCa) epithelial cells, the tumour metabolism also changes during development and progress. These alterations are partly driven by the androgen receptor, the key regulator in PCa development, progress, and survival. In contrast to other epithelial cells of different entities, glycolytic metabolism in prostate cells sustains physiological citrate secretion in the normal prostatic epithelium. In the early stages of PCa, citrate is utilised to power oxidative phosphorylation and fuel lipogenesis, enabling tumour growth and progression. In advanced and incurable castration-resistant PCa, a metabolic shift towards choline, amino acid, and glycolytic metabolism fueling tumour growth and progression has been described. Therefore, even if the metabolic changes are not fully understood, the altered metabolism during tumour progression may provide opportunities for novel therapeutic strategies, especially in advanced PCa stages. This review focuses on the main differences in PCa's metabolism during tumourigenesis and progression highlighting glutamine's role in PCa.
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14
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Aggarwal R, Starodub AN, Koh BD, Xing G, Armstrong AJ, Carducci MA. Phase Ib Study of the BET Inhibitor GS-5829 as Monotherapy and Combined with Enzalutamide in Patients with Metastatic Castration-Resistant Prostate Cancer. Clin Cancer Res 2022; 28:3979-3989. [PMID: 35816286 PMCID: PMC9475238 DOI: 10.1158/1078-0432.ccr-22-0175] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 06/02/2022] [Accepted: 07/07/2022] [Indexed: 01/07/2023]
Abstract
PURPOSE A phase Ib study (1604) was conducted to evaluate the safety and efficacy of GS-5829, an oral bromodomain and extraterminal inhibitor, alone and in combination with enzalutamide in metastatic castration-resistant prostate cancer (mCRPC). A phase I study (1599) in solid tumors/lymphoma was also conducted. PATIENTS AND METHODS Men with confirmed mCRPC and disease progression despite abiraterone and/or enzalutamide treatment were enrolled in a 3 + 3 dose escalation paradigm starting at 2 mg daily with GS-5829 alone and in combination with 160 mg daily enzalutamide. The primary efficacy endpoint was nonprogression rate at week 24; secondary endpoints included prostate-specific antigen reduction from baseline, progression-free survival, and GS-5829 pharmacokinetics (PK). PK and safety were also evaluated in Study 1599. RESULTS Thirty-one men, with a median of five prior regimens, received at least 1 dose of study drug in Study 1604. Treatment-emergent adverse events (TEAE) were reported in 94% of patients; 16% discontinued for TEAEs. There were no dose-dependent increases in the AUCtau or Cmax after once-daily administration of GS-5829 2 to 9 mg, and biomarkers CCR2 inhibition and HEXIM1 induction were increased only at higher doses of monotherapy. A high degree of interpatient variability existed across all doses in PK and pharmacodynamic parameters. The proportion with nonprogression at week 24, estimated by Kaplan-Meier model, was 25% (95% confidence interval, 10-42) for all treated patients. CONCLUSIONS GS-5829 was generally tolerated but demonstrated limited efficacy and lack of dose proportional increases in plasma concentrations in patients with mCRPC.
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Affiliation(s)
- Rahul Aggarwal
- UCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, California.,Corresponding Author: Rahul Aggarwal, UCSF Helen Diller Family Comprehensive Cancer Center, 550 16th Street, San Francisco, CA 94158. Phone: 415-476-4616; E-mail:
| | | | | | - Guan Xing
- Gilead Sciences, Inc., Foster City, California
| | - Andrew J. Armstrong
- Duke Cancer Institute Center for Prostate and Urologic Cancer, Duke University, Durham, North Carolina
| | - Michael A. Carducci
- Johns Hopkins Sidney Kimmel Comprehensive Cancer Center, Baltimore, Maryland
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15
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Krause W. Resistance to prostate cancer treatments. IUBMB Life 2022; 75:390-410. [PMID: 35978491 DOI: 10.1002/iub.2665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 07/09/2022] [Indexed: 12/14/2022]
Abstract
A review of the current treatment options for prostate cancer and the formation of resistance to these regimens has been compiled including primary, acquired, and cross-resistance. The diversification of the pathways involved and the escape routes the tumor is utilizing have been addressed. Whereas early stages of tumor can be cured, there is no treatment available after a point of no return has been reached, leaving palliative treatment as the only option. The major reasons for this outcome are the heterogeneity of tumors, both inter- and intra-individually and the nearly endless number of escape routes, which the tumor can select to overcome the effects of treatment. This means that more focus should be applied to the individualization of both diagnosis and therapy of prostate cancer. In addition to current treatment options, novel drugs and ongoing clinical trials have been addressed in this review.
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16
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Advances in the Current Understanding of the Mechanisms Governing the Acquisition of Castration-Resistant Prostate Cancer. Cancers (Basel) 2022; 14:cancers14153744. [PMID: 35954408 PMCID: PMC9367587 DOI: 10.3390/cancers14153744] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 07/29/2022] [Indexed: 11/17/2022] Open
Abstract
Despite aggressive treatment and androgen-deprivation therapy, most prostate cancer patients ultimately develop castration-resistant prostate cancer (CRPC), which is associated with high mortality rates. However, the mechanisms governing the development of CRPC are poorly understood, and androgen receptor (AR) signaling has been shown to be important in CRPC through AR gene mutations, gene overexpression, co-regulatory factors, AR shear variants, and androgen resynthesis. A growing number of non-AR pathways have also been shown to influence the CRPC progression, including the Wnt and Hh pathways. Moreover, non-coding RNAs have been identified as important regulators of the CRPC pathogenesis. The present review provides an overview of the relevant literature pertaining to the mechanisms governing the molecular acquisition of castration resistance in prostate cancer, providing a foundation for future, targeted therapeutic efforts.
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17
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Obinata D, Funakoshi D, Takayama K, Hara M, Niranjan B, Teng L, Lawrence MG, Taylor RA, Risbridger GP, Suzuki Y, Takahashi S, Inoue S. OCT1-target neural gene PFN2 promotes tumor growth in androgen receptor-negative prostate cancer. Sci Rep 2022; 12:6094. [PMID: 35413990 PMCID: PMC9005514 DOI: 10.1038/s41598-022-10099-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 03/23/2022] [Indexed: 12/12/2022] Open
Abstract
Androgen and androgen receptor (AR) targeted therapies are the main treatment for most prostate cancer (PC) patients. Although AR signaling inhibitors are effective, tumors can evade this treatment by transforming to an AR-negative PC via lineage plasticity. OCT1 is a transcription factor interacting with the AR to enhance signaling pathways involved in PC progression, but its role in the emergence of the AR-negative PC is unknown. We performed chromatin immunoprecipitation sequencing (ChIP-seq) in patient-derived castration-resistant AR-negative PC cells to identify genes that are regulated by OCT1. Interestingly, a group of genes associated with neural precursor cell proliferation was significantly enriched. Then, we focused on neural genes STNB1 and PFN2 as OCT1-targets among them. Immunohistochemistry revealed that both STNB1 and PFN2 are highly expressed in human AR-negative PC tissues. Knockdown of SNTB1 and PFN2 by siRNAs significantly inhibited migration of AR-negative PC cells. Notably, knockdown of PFN2 showed a marked inhibitory effect on tumor growth in vivo. Thus, we identified OCT1-target genes in AR-negative PC using a patient-derived model, clinicopathologial analysis and an animal model.
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Affiliation(s)
- Daisuke Obinata
- Department of Urology, Nihon University School of Medicine, 30-1, Ooyaguchikamicho, Itabashi-ku, Tokyo, 173-8610, Japan.,Prostate Cancer Research Group, Monash Biomedicine Discovery Institute Cancer Program, Department of Anatomy and Developmental Biology, Monash University, Wellington Road, Clayton, VIC, 3800, Australia
| | - Daigo Funakoshi
- Department of Urology, Nihon University School of Medicine, 30-1, Ooyaguchikamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Kenichi Takayama
- Department of Systems Aging Science and Medicine, Tokyo Metropolitan Institute of Gerontology, 35-2 Sakae-cho, Itabashi-ku, Tokyo, 173-0015, Japan
| | - Makoto Hara
- Division of Neurology, Department of Medicine, Nihon University School of Medicine, 30-1, Ooyaguchikamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Birunthi Niranjan
- Prostate Cancer Research Group, Monash Biomedicine Discovery Institute Cancer Program, Department of Anatomy and Developmental Biology, Monash University, Wellington Road, Clayton, VIC, 3800, Australia
| | - Linda Teng
- Prostate Cancer Research Group, Monash Biomedicine Discovery Institute Cancer Program, Department of Anatomy and Developmental Biology, Monash University, Wellington Road, Clayton, VIC, 3800, Australia
| | - Mitchell G Lawrence
- Prostate Cancer Research Group, Monash Biomedicine Discovery Institute Cancer Program, Department of Anatomy and Developmental Biology, Monash University, Wellington Road, Clayton, VIC, 3800, Australia.,Cancer Research Division, Peter MacCallum Cancer Centre, 305 Grattan Street, Parkville, VIC, 3000, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, 305 Grattan Street, Parkville, VIC, 3010, Australia.,Melbourne Urological Research Alliance (MURAL), Monash Biomedicine Discovery Institute Cancer Program, Monash University, Wellington Road, Clayton, VIC, 3800, Australia.,Cabrini Institute, Cabrini Health, 183 Wattletree Road, Malvern, VIC, 3144, Australia
| | - Renea A Taylor
- Cancer Research Division, Peter MacCallum Cancer Centre, 305 Grattan Street, Parkville, VIC, 3000, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, 305 Grattan Street, Parkville, VIC, 3010, Australia.,Melbourne Urological Research Alliance (MURAL), Monash Biomedicine Discovery Institute Cancer Program, Monash University, Wellington Road, Clayton, VIC, 3800, Australia.,Cabrini Institute, Cabrini Health, 183 Wattletree Road, Malvern, VIC, 3144, Australia.,Prostate Cancer Research Group, Monash Biomedicine Discovery Institute Cancer Program, Department of Physiology, Monash University, Wellington Road, Clayton, VIC, 3800, Australia
| | - Gail P Risbridger
- Prostate Cancer Research Group, Monash Biomedicine Discovery Institute Cancer Program, Department of Anatomy and Developmental Biology, Monash University, Wellington Road, Clayton, VIC, 3800, Australia.,Cancer Research Division, Peter MacCallum Cancer Centre, 305 Grattan Street, Parkville, VIC, 3000, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, 305 Grattan Street, Parkville, VIC, 3010, Australia.,Melbourne Urological Research Alliance (MURAL), Monash Biomedicine Discovery Institute Cancer Program, Monash University, Wellington Road, Clayton, VIC, 3800, Australia.,Cabrini Institute, Cabrini Health, 183 Wattletree Road, Malvern, VIC, 3144, Australia
| | - Yutaka Suzuki
- Department of Computational Biology and Medical Sciences Graduate School of Frontier Sciences, University of Tokyo, 5-1-5, Kashiwanoha, Chiba, Chiba, 277-8562, Japan
| | - Satoru Takahashi
- Department of Urology, Nihon University School of Medicine, 30-1, Ooyaguchikamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Satoshi Inoue
- Department of Systems Aging Science and Medicine, Tokyo Metropolitan Institute of Gerontology, 35-2 Sakae-cho, Itabashi-ku, Tokyo, 173-0015, Japan. .,Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka, Saitama, 350-1241, Japan.
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18
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Transforming growth factor-beta (TGF-β) in prostate cancer: A dual function mediator? Int J Biol Macromol 2022; 206:435-452. [PMID: 35202639 DOI: 10.1016/j.ijbiomac.2022.02.094] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 12/14/2022]
Abstract
Transforming growth factor-beta (TGF-β) is a member of a family of secreted cytokines with vital biological functions in cells. The abnormal expression of TGF-β signaling is a common finding in pathological conditions, particularly cancer. Prostate cancer (PCa) is one of the leading causes of death among men. Several genetic and epigenetic alterations can result in PCa development, and govern its progression. The present review attempts to shed some light on the role of TGF-β signaling in PCa. TGF-β signaling can either stimulate or inhibit proliferation and viability of PCa cells, depending on the context. The metastasis of PCa cells is increased by TGF-β signaling via induction of EMT and MMPs. Furthermore, TGF-β signaling can induce drug resistance of PCa cells, and can lead to immune evasion via reducing the anti-tumor activity of cytotoxic T cells and stimulating regulatory T cells. Upstream mediators such as microRNAs and lncRNAs, can regulate TGF-β signaling in PCa. Furthermore, some pharmacological compounds such as thymoquinone and valproic acid can suppress TGF-β signaling for PCa therapy. TGF-β over-expression is associated with poor prognosis in PCa patients. Furthermore, TGF-β up-regulation before prostatectomy is associated with recurrence of PCa. Overall, current review discusses role of TGF-β signaling in proliferation, metastasis and therapy response of PCa cells and in order to improve knowledge towards its regulation, upstream mediators of TGF-β such as non-coding RNAs are described. Finally, TGF-β regulation and its clinical application are discussed.
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19
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Tomeva E, Switzeny OJ, Heitzinger C, Hippe B, Haslberger AG. Comprehensive Approach to Distinguish Patients with Solid Tumors from Healthy Controls by Combining Androgen Receptor Mutation p.H875Y with Cell-Free DNA Methylation and Circulating miRNAs. Cancers (Basel) 2022; 14:cancers14020462. [PMID: 35053623 PMCID: PMC8774173 DOI: 10.3390/cancers14020462] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/13/2022] [Accepted: 01/16/2022] [Indexed: 02/01/2023] Open
Abstract
Liquid biopsy-based tests emerge progressively as an important tool for cancer diagnostics and management. Currently, researchers focus on a single biomarker type and one tumor entity. This study aimed to create a multi-analyte liquid biopsy test for the simultaneous detection of several solid cancers. For this purpose, we analyzed cell-free DNA (cfDNA) mutations and methylation, as well as circulating miRNAs (miRNAs) in plasma samples from 97 patients with cancer (20 bladder, 9 brain, 30 breast, 28 colorectal, 29 lung, 19 ovarian, 12 pancreas, 27 prostate, 23 stomach) and 15 healthy controls via real-time qPCR. Androgen receptor p.H875Y mutation (AR) was detected for the first time in bladder, lung, stomach, ovarian, brain, and pancreas cancer, all together in 51.3% of all cancer samples and in none of the healthy controls. A discriminant function model, comprising cfDNA mutations (COSM10758, COSM18561), cfDNA methylation markers (MLH1, MDR1, GATA5, SFN) and miRNAs (miR-17-5p, miR-20a-5p, miR-21-5p, miR-26a-5p, miR-27a-3p, miR-29c-3p, miR-92a-3p, miR-101-3p, miR-133a-3p, miR-148b-3p, miR-155-5p, miR-195-5p) could further classify healthy and tumor samples with 95.4% accuracy, 97.9% sensitivity, 80% specificity. This multi-analyte liquid biopsy-based test may help improve the simultaneous detection of several cancer types and underlines the importance of combining genetic and epigenetic biomarkers.
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Affiliation(s)
- Elena Tomeva
- HealthBioCare GmbH, A-1090 Vienna, Austria; (E.T.); (O.J.S.); (B.H.)
| | | | - Clemens Heitzinger
- Center for Artificial Intelligence and Machine Learning (CAIML), TU Wien, A-1040 Vienna, Austria;
| | - Berit Hippe
- HealthBioCare GmbH, A-1090 Vienna, Austria; (E.T.); (O.J.S.); (B.H.)
- Department of Nutritional Sciences, University of Vienna, A-1090 Vienna, Austria
| | - Alexander G. Haslberger
- Department of Nutritional Sciences, University of Vienna, A-1090 Vienna, Austria
- Correspondence:
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20
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Ribelli G, Simonetti S, Iuliani M, Rossi E, Vincenzi B, Tonini G, Pantano F, Santini D. Osteoblasts Promote Prostate Cancer Cell Proliferation Through Androgen Receptor Independent Mechanisms. Front Oncol 2021; 11:789885. [PMID: 34966687 PMCID: PMC8711264 DOI: 10.3389/fonc.2021.789885] [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: 10/05/2021] [Accepted: 11/22/2021] [Indexed: 11/13/2022] Open
Abstract
Patients with metastatic prostate cancer frequently develop bone metastases that elicit significant skeletal morbidity and increased mortality. The high tropism of prostate cancer cells for bone and their tendency to induce the osteoblastic-like phenotype are a result of a complex interplay between tumor cells and osteoblasts. Although the role of osteoblasts in supporting prostate cancer cell proliferation has been reported by previous studies, their precise contribution in tumor growth remains to be fully elucidated. Here, we tried to dissect the molecular signaling underlining the interactions between castration-resistant prostate cancer (CRPC) cells and osteoblasts using in vitro co-culture models. Transcriptomic analysis showed that osteoblast-conditioned media (OCM) induced the overexpression of genes related to cell cycle in the CRPC cell line C4-2B but, surprisingly, reduced androgen receptor (AR) transcript levels. In-depth analysis of AR expression in C4-2B cells after OCM treatment showed an AR reduction at the mRNA (p = 0.0047), protein (p = 0.0247), and functional level (p = 0.0029) and, concomitantly, an increase of C4-2B cells in S-G2-M cell cycle phases (p = 0.0185). An extensive proteomic analysis revealed in OCM the presence of some molecules that reduced AR activation, and among these, Matrix metalloproteinase-1 (MMP-1) was the only one able to block AR function (0.1 ng/ml p = 0.006; 1 ng/ml p = 0.002; 10 ng/ml p = 0.0001) and, at the same time, enhance CRPC proliferation (1 ng/ml p = 0.009; 10 ng/ml p = 0.033). Although the increase of C4-2B cell growth induced by MMP-1 did not reach the proliferation levels observed after OCM treatment, the addition of Vorapaxar, an MMP-1 receptor inhibitor (Protease-activated receptor-1, PAR-1), significantly reduced C4-2B cell cycle (0.1 μM p = 0.014; 1 μM p = 0.0087). Overall, our results provide a novel AR-independent mechanism of CRPC proliferation and suggest that MMP-1/PAR-1 could be one of the potential pathways involved in this process.
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Affiliation(s)
- Giulia Ribelli
- Department of Medical Oncology, Campus Bio-Medico University of Rome, Rome, Italy
| | - Sonia Simonetti
- Department of Medical Oncology, Campus Bio-Medico University of Rome, Rome, Italy
| | - Michele Iuliani
- Department of Medical Oncology, Campus Bio-Medico University of Rome, Rome, Italy
| | - Elisabetta Rossi
- Department of Immunology and Molecular Oncology, Istituto Oncologico Veneto (IOV) Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Padua, Italy.,Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - Bruno Vincenzi
- Department of Medical Oncology, Campus Bio-Medico University of Rome, Rome, Italy
| | - Giuseppe Tonini
- Department of Medical Oncology, Campus Bio-Medico University of Rome, Rome, Italy
| | - Francesco Pantano
- Department of Medical Oncology, Campus Bio-Medico University of Rome, Rome, Italy
| | - Daniele Santini
- Department of Medical Oncology, Campus Bio-Medico University of Rome, Rome, Italy
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21
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Gu Y, Xue M, Wang Q, Hong X, Wang X, Zhou F, Sun J, Wang G, Peng Y. Novel Strategy of Proxalutamide for the Treatment of Prostate Cancer through Coordinated Blockade of Lipogenesis and Androgen Receptor Axis. Int J Mol Sci 2021; 22:ijms222413222. [PMID: 34948018 PMCID: PMC8704202 DOI: 10.3390/ijms222413222] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/29/2021] [Accepted: 12/05/2021] [Indexed: 12/12/2022] Open
Abstract
Objective: Prostate cancer (PCa) is the most common malignant tumor diagnosed in men in developed countries. In developing countries, the PCa morbidity and mortality rates are also increasing rapidly. Since androgen receptor (AR) is a key driver and plays a critical role in the regulation of PCa development, AR-targeted agents provide a key component of current therapy regimens. However, even new-generation AR antagonists are prone to drug resistance, and there is currently no effective strategy for overcoming advanced PCa aggressiveness, including drug-resistance progression. The aim of this study was to evaluate the potential efficacy and novel therapy strategy of proxalutamide (a newly developed AR antagonist) in PCa. Methods: Four PCa cell lines with various biological heterogeneities were utilized in this study, namely, androgen-sensitive/-insensitive with/without AR expression. Proliferation, migration and apoptosis assays in PCa cells were used to evaluate the effective therapeutic activity of proxalutamide. The changes in lipid droplet accumulation and lipidomic profiles were analyzed to determine the influence of proxalutamide on lipogenesis in PCa cells. The molecular basis of the effects of proxalutamide on lipogenesis and the AR axis was then further investigated. Results: Proxalutamide significantly inhibited the proliferation and migration of PCa cells, and its inhibitory effect was superior to that of enzalutamide (Enz, second-generation AR antagonist). Proxalutamide induced the caspase-dependent apoptosis of PCa cells. Proxalutamide significantly diminished the level of lipid droplets in PCa cells, changed the lipid profile of PCa cells and reduced the content of most lipids (especially triglycerides) in PCa cells. Proxalutamide attenuated de novo lipogenesis by inhibiting the expression of ATP citrate lyase (ACL), acetyl CoA carboxylase (ACC), fatty acid synthase (FASN) and sterol regulatory element-binding protein-1 (SREBP-1). Moreover, proxalutamide also decreased AR expression in PCa cells, and its inhibitory effect on lipogenesis did not depend on its ability to down-regulate AR expression. However, Enz had no effect on AR expression, lipid accumulation or lipid de novo synthesis in PCa cells. Conclusions: By co-targeting the AR axis and endogenous adipogenesis, a novel and promising strategy was established for proxalutamide to combat the progress of PCa. The unique effect of proxalutamide on the metabolic reprogramming of PCa provides a potential solution to overcome the resistance of current AR-targeted therapy, which will help to effectively prolong its clinical service life.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Ying Peng
- Correspondence: or ; Tel.: +86-25-83271176; Fax: +86-25-83271060
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22
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Singla RK, Sai CS, Chopra H, Behzad S, Bansal H, Goyal R, Gautam RK, Tsagkaris C, Joon S, Singla S, Shen B. Natural Products for the Management of Castration-Resistant Prostate Cancer: Special Focus on Nanoparticles Based Studies. Front Cell Dev Biol 2021; 9:745177. [PMID: 34805155 PMCID: PMC8602797 DOI: 10.3389/fcell.2021.745177] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 10/06/2021] [Indexed: 02/05/2023] Open
Abstract
Prostate cancer is the most common type of cancer among men and the second most frequent cause of cancer-related mortality around the world. The progression of advanced prostate cancer to castration-resistant prostate cancer (CRPC) plays a major role in disease-associated morbidity and mortality, posing a significant therapeutic challenge. Resistance has been associated with the activation of androgen receptors via several mechanisms, including alternative dehydroepiandrosterone biosynthetic pathways, other androgen receptor activator molecules, oncogenes, and carcinogenic signaling pathways. Tumor microenvironment plays a critical role not only in the cancer progression but also in the drug resistance. Numerous natural products have shown major potential against particular or multiple resistance pathways as shown by in vitro and in vivo studies. However, their efficacy in clinical trials has been undermined by their unfavorable pharmacological properties (hydrophobic molecules, instability, low pharmacokinetic profile, poor water solubility, and high excretion rate). Nanoparticle formulations can provide a way out of the stalemate, employing targeted drug delivery, improved pharmacokinetic drug profile, and transportation of diagnostic and therapeutic agents via otherwise impermeable biological barriers. This review compiles the available evidence regarding the use of natural products for the management of CRPC with a focus on nanoparticle formulations. PubMed and Google Scholar search engines were used for preclinical studies, while ClinicalTrials.gov and PubMed were searched for clinical studies. The results of our study suggest the efficacy of natural compounds such as curcumin, resveratrol, apigenin, quercetin, fisetin, luteolin, kaempferol, genistein, berberine, ursolic acid, eugenol, gingerol, and ellagic acid against several mechanisms leading to castration resistance in preclinical studies, but fail to set the disease under control in clinical studies. Nanoparticle formulations of curcumin and quercetin seem to increase their potential in clinical settings. Using nanoparticles based on betulinic acid, capsaicin, sintokamide A, niphatenones A and B, as well as atraric acid seems promising but needs to be verified with preclinical and clinical studies.
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Affiliation(s)
- Rajeev K. Singla
- Frontiers Science Center for Disease-related Molecular Network, Institutes for Systems Genetics, West China Hospital, Sichuan University, Chengdu, China
- iGlobal Research and Publishing Foundation, New Delhi, India
| | | | - Hitesh Chopra
- Chitkara College of Pharmacy, Chitkara University, Rajpura, India
| | - Sahar Behzad
- Evidence-Based Phytotherapy and Complementary Medicine Research Center, Alborz University of Medical Sciences, Karaj, Iran
- Department of Pharmacognosy, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Himangini Bansal
- Delhi Institute of Pharmaceutical Sciences and Research, New Delhi, India
| | - Rajat Goyal
- MM School of Pharmacy, MM University, Ambala, India
| | | | | | - Shikha Joon
- Frontiers Science Center for Disease-related Molecular Network, Institutes for Systems Genetics, West China Hospital, Sichuan University, Chengdu, China
- iGlobal Research and Publishing Foundation, New Delhi, India
| | - Shailja Singla
- iGlobal Research and Publishing Foundation, New Delhi, India
| | - Bairong Shen
- Frontiers Science Center for Disease-related Molecular Network, Institutes for Systems Genetics, West China Hospital, Sichuan University, Chengdu, China
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23
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Haffner MC, Bhamidipati A, Tsai HK, Esopi DM, Vaghasia AM, Low JY, Patel RA, Guner G, Pham MT, Castagna N, Hicks J, Wyhs N, Aebersold R, De Marzo AM, Nelson WG, Guo T, Yegnasubramanian S. Phenotypic characterization of two novel cell line models of castration-resistant prostate cancer. Prostate 2021; 81:1159-1171. [PMID: 34402095 PMCID: PMC8460612 DOI: 10.1002/pros.24210] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 06/30/2021] [Accepted: 08/04/2021] [Indexed: 01/01/2023]
Abstract
BACKGROUND Resistance to androgen deprivation therapies is a major driver of mortality in advanced prostate cancer. Therefore, there is a need to develop new preclinical models that allow the investigation of resistance mechanisms and the assessment of drugs for the treatment of castration-resistant prostate cancer. METHODS We generated two novel cell line models (LAPC4-CR and VCaP-CR) which were derived by passaging LAPC4 and VCaP cells in vivo and in vitro under castrate conditions. We performed detailed transcriptomic (RNA-seq) and proteomic analyses (SWATH-MS) to delineate expression differences between castration-sensitive and castration-resistant cell lines. Furthermore, we characterized the in vivo and in vitro growth characteristics of these novel cell line models. RESULTS The two cell line derivatives LAPC4-CR and VCaP-CR showed castration-resistant growth in vitro and in vivo which was only minimally inhibited by AR antagonists, enzalutamide, and bicalutamide. High-dose androgen treatment resulted in significant growth arrest of VCaP-CR but not in LAPC4-CR cells. Both cell lines maintained AR expression, but exhibited distinct expression changes on the mRNA and protein level. Integrated analyses including data from LNCaP and the previously described castration-resistant LNCaP-abl cells revealed an expression signature of castration resistance. CONCLUSIONS The two novel cell line models LAPC4-CR and VCaP-CR and their comprehensive characterization on the RNA and protein level represent important resources to study the molecular mechanisms of castration resistance.
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Affiliation(s)
- Michael C. Haffner
- Divisions of Human Biology and Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
- Department of Pathology, University of Washington, Seattle, WA, USA
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, MD, Baltimore, USA
| | - Akshay Bhamidipati
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, MD, Baltimore, USA
| | - Harrison K. Tsai
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, MD, Baltimore, USA
- Department of Pathology, Brigham and Women’s Hospital, Boston, MA, USA
| | - David M. Esopi
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, MD, Baltimore, USA
| | - Ajay M. Vaghasia
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, MD, Baltimore, USA
| | - Jin-Yih Low
- Divisions of Human Biology and Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Radhika A. Patel
- Divisions of Human Biology and Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Gunes Guner
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Hacettepe University Faculty of Medicine, Department of Pathology, Ankara, Turkey
| | - Minh-Tam Pham
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, MD, Baltimore, USA
| | - Nicole Castagna
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, MD, Baltimore, USA
| | - Jessica Hicks
- Department of Pathology, University of Washington, Seattle, WA, USA
| | - Nicolas Wyhs
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, MD, Baltimore, USA
| | - Ruedi Aebersold
- Department of Biology, Institute of Molecular Systems Biology, ETH, Zürich, Switzerland
- Faculty of Science, University of Zürich, Zürich. Switzerland
| | - Angelo M. De Marzo
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, MD, Baltimore, USA
- Department of Urology, James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - William G. Nelson
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, MD, Baltimore, USA
- Department of Urology, James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Tiannan Guo
- Department of Biology, Institute of Molecular Systems Biology, ETH, Zürich, Switzerland
- Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, Hangzhou, Zhejiang Province, China
| | - Srinivasan Yegnasubramanian
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, MD, Baltimore, USA
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24
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Inhibition of Scavenger Receptor Class B Type 1 (SR-B1) Expression and Activity as a Potential Novel Target to Disrupt Cholesterol Availability in Castration-Resistant Prostate Cancer. Pharmaceutics 2021; 13:pharmaceutics13091509. [PMID: 34575583 PMCID: PMC8467449 DOI: 10.3390/pharmaceutics13091509] [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: 06/25/2021] [Revised: 09/04/2021] [Accepted: 09/08/2021] [Indexed: 02/07/2023] Open
Abstract
There have been several studies that have linked elevated scavenger receptor class b type 1 (SR-B1) expression and activity to the development and progression of castration-resistant prostate cancer (CRPC). SR-B1 facilitates the influx of cholesterol to the cell from lipoproteins in systemic circulation. This influx of cholesterol may be important for many cellular functions, including the synthesis of androgens. Castration-resistant prostate cancer tumors can synthesize androgens de novo to supplement the loss of exogenous sources often induced by androgen deprivation therapy. Silencing of SR-B1 may impact the ability of prostate cancer cells, particularly those of the castration-resistant state, to maintain the intracellular supply of androgens by removing a supply of cholesterol. SR-B1 expression is elevated in CRPC models and has been linked to poor survival of patients. The overarching belief has been that cholesterol modulation, through either synthesis or uptake inhibition, will impact essential signaling processes, impeding the proliferation of prostate cancer. The reduction in cellular cholesterol availability can impede prostate cancer proliferation through both decreased steroid synthesis and steroid-independent mechanisms, providing a potential therapeutic target for the treatment of prostate cancer. In this article, we discuss and highlight the work on SR-B1 as a potential novel drug target for CRPC management.
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25
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Rii J, Sakamoto S, Sugiura M, Kanesaka M, Fujimoto A, Yamada Y, Maimaiti M, Ando K, Wakai K, Xu M, Imamura Y, Shindo N, Hirota T, Kaneda A, Kanai Y, Ikehara Y, Anzai N, Ichikawa T. Functional analysis of LAT3 in prostate cancer: Its downstream target and relationship with androgen receptor. Cancer Sci 2021; 112:3871-3883. [PMID: 34050700 PMCID: PMC8409400 DOI: 10.1111/cas.14991] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 05/05/2021] [Accepted: 05/18/2021] [Indexed: 12/11/2022] Open
Abstract
L‐type amino acid transporter 3 (LAT3, SLC43A1) is abundantly expressed in prostate cancer (PC) and is thought to play an essential role in PC progression through the cellular uptake of essential amino acids. Here, we analyzed the expression, function, and downstream target of LAT3 in PC. LAT3 was highly expressed in PC cells expressing androgen receptor (AR), and its expression was increased by dihydrotestosterone treatment and decreased by bicalutamide treatment. In chromatin immunoprecipitation sequencing of AR, binding of AR to the SLC43A1 region was increased by dihydrotestosterone stimulation. Knockdown of LAT3 inhibited cell proliferation, migration, and invasion, and the phosphorylation of p70S6K and 4EBP‐1. Separase (ESPL1) was identified as a downstream target of LAT3 by RNA sequencing analysis. In addition, immunostaining of prostatectomy specimens was performed. In the multivariate analysis, high expression of LAT3 was an independent prognostic factor for recurrence‐free survival (hazard ratio: 3.24; P = .0018). High LAT3 expression was correlated with the pathological T stage and a high International Society of Urological Pathology grade. In summary, our results suggest that LAT3 plays an important role in the progression of PC.
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Affiliation(s)
- Junryo Rii
- Department of Urology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Shinichi Sakamoto
- Department of Urology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Masahiro Sugiura
- Department of Urology, Chiba University Graduate School of Medicine, Chiba, Japan.,Department of Molecular Oncology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Manato Kanesaka
- Department of Urology, Chiba University Graduate School of Medicine, Chiba, Japan.,Department of Molecular Oncology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Ayumu Fujimoto
- Department of Urology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Yasutaka Yamada
- Department of Urology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Maihulan Maimaiti
- Department of Tumor Pathology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Keisuke Ando
- Department of Urology, Chiba University Graduate School of Medicine, Chiba, Japan.,Department of Pharmacology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Ken Wakai
- Department of Urology, Chiba University Graduate School of Medicine, Chiba, Japan.,Department of Tumor Pathology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Minhui Xu
- Bio-system Pharmacology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yusuke Imamura
- Department of Urology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Norihisa Shindo
- Division of Experimental Pathology, Cancer Institute of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Toru Hirota
- Division of Experimental Pathology, Cancer Institute of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Atsushi Kaneda
- Department of Molecular Oncology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Yoshikatsu Kanai
- Bio-system Pharmacology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yuzuru Ikehara
- Department of Tumor Pathology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Naohiko Anzai
- Department of Pharmacology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Tomohiko Ichikawa
- Department of Urology, Chiba University Graduate School of Medicine, Chiba, Japan
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26
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Choo N, Ramm S, Luu J, Winter JM, Selth LA, Dwyer AR, Frydenberg M, Grummet J, Sandhu S, Hickey TE, Tilley WD, Taylor RA, Risbridger GP, Lawrence MG, Simpson KJ. High-Throughput Imaging Assay for Drug Screening of 3D Prostate Cancer Organoids. SLAS DISCOVERY 2021; 26:1107-1124. [PMID: 34111999 PMCID: PMC8458687 DOI: 10.1177/24725552211020668] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
New treatments are required for advanced prostate cancer; however, there are fewer preclinical models of prostate cancer than other common tumor types to test candidate therapeutics. One opportunity to increase the scope of preclinical studies is to grow tissue from patient-derived xenografts (PDXs) as organoid cultures. Here we report a scalable pipeline for automated seeding, treatment and an analysis of the drug responses of prostate cancer organoids. We established organoid cultures from 5 PDXs with diverse phenotypes of prostate cancer, including castrate-sensitive and castrate-resistant disease, as well as adenocarcinoma and neuroendocrine pathology. We robotically embedded organoids in Matrigel in 384-well plates and monitored growth via brightfield microscopy before treatment with poly ADP-ribose polymerase inhibitors or a compound library. Independent readouts including metabolic activity and live-cell imaging–based features provided robust measures of organoid growth and complementary ways of assessing drug efficacy. Single organoid analyses enabled in-depth assessment of morphological differences between patients and within organoid populations and revealed that larger organoids had more striking changes in morphology and composition after drug treatment. By increasing the scale and scope of organoid experiments, this automated assay complements other patient-derived models and will expedite preclinical testing of new treatments for prostate cancer.
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Affiliation(s)
- Nicholas Choo
- Monash Partners Comprehensive Cancer Consortium, Monash Biomedicine Discovery Institute Cancer Program, Prostate Cancer Research Group, Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia
| | - Susanne Ramm
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia.,Victorian Centre for Functional Genomics, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Jennii Luu
- Victorian Centre for Functional Genomics, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Jean M Winter
- Dame Roma Mitchell Cancer Research Laboratories, Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia.,Freemason's Centre for Male Health and Wellbeing, University of Adelaide, Adelaide, SA, Australia
| | - Luke A Selth
- Dame Roma Mitchell Cancer Research Laboratories, Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia.,Freemason's Centre for Male Health and Wellbeing, University of Adelaide, Adelaide, SA, Australia.,Flinders Health and Medical Research Institute, Flinders University, Adelaide, SA, Australia
| | - Amy R Dwyer
- Dame Roma Mitchell Cancer Research Laboratories, Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Mark Frydenberg
- Monash Partners Comprehensive Cancer Consortium, Monash Biomedicine Discovery Institute Cancer Program, Prostate Cancer Research Group, Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Australian Urology Associates, Melbourne, VIC, Australia.,Department of Urology, Cabrini Health, Malvern, VIC, Australia
| | - Jeremy Grummet
- Australian Urology Associates, Melbourne, VIC, Australia.,Epworth Healthcare, Melbourne, VIC, Australia.,Department of Surgery, Central Clinical School, Monash University, Clayton, VIC, Australia
| | - Shahneen Sandhu
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia.,Department of Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,Cancer Tissue Collection After Death (CASCADE) Program, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Theresa E Hickey
- Dame Roma Mitchell Cancer Research Laboratories, Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Wayne D Tilley
- Dame Roma Mitchell Cancer Research Laboratories, Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia.,Freemason's Centre for Male Health and Wellbeing, University of Adelaide, Adelaide, SA, Australia
| | - Renea A Taylor
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia.,Monash Partners Comprehensive Cancer Consortium, Monash Biomedicine Discovery Institute Cancer Program, Prostate Cancer Research Group, Department of Physiology, Monash University, Clayton, VIC, Australia.,Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,Melbourne Urological Research Alliance (MURAL), Monash Biomedicine Discovery Institute Cancer Program, Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia
| | - Gail P Risbridger
- Monash Partners Comprehensive Cancer Consortium, Monash Biomedicine Discovery Institute Cancer Program, Prostate Cancer Research Group, Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia.,Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,Melbourne Urological Research Alliance (MURAL), Monash Biomedicine Discovery Institute Cancer Program, Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia
| | - Mitchell G Lawrence
- Monash Partners Comprehensive Cancer Consortium, Monash Biomedicine Discovery Institute Cancer Program, Prostate Cancer Research Group, Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia.,Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.,Melbourne Urological Research Alliance (MURAL), Monash Biomedicine Discovery Institute Cancer Program, Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia
| | - Kaylene J Simpson
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia.,Victorian Centre for Functional Genomics, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
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27
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Undesirable Status of Prostate Cancer Cells after Intensive Inhibition of AR Signaling: Post-AR Era of CRPC Treatment. Biomedicines 2021; 9:biomedicines9040414. [PMID: 33921329 PMCID: PMC8069212 DOI: 10.3390/biomedicines9040414] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/07/2021] [Accepted: 04/09/2021] [Indexed: 12/19/2022] Open
Abstract
Recent advances in prostate cancer (PC) research unveiled real androgen receptor (AR) functions in castration-resistant PC (CRPC). Moreover, AR still accelerates PC cell proliferation via the activation of several mechanisms (e.g., mutation, variants, and amplifications in CRPC). New-generation AR signaling-targeted agents, inhibiting extremely the activity of AR, were developed based on these incontrovertible mechanisms of AR-induced CRPC progression. However, long-term administration of AR signaling-targeted agents subsequently induces the major problem that AR (complete)-independent CRPC cells present neither AR nor prostate-specific antigen, including neuroendocrine differentiation as a subtype of AR-independent CRPC. Moreover, there are few treatments effective for AR-independent CRPC with solid evidence. This study focuses on the transformation mechanisms of AR-independent from AR-dependent CRPC cells and potential treatment strategy for AR-independent CRPC and discusses them based on a review of basic and clinical literature.
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