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Jones CE, Sharick JT, Sizemore ST, Cukierman E, Strohecker AM, Leight JL. A miniaturized screening platform to identify novel regulators of extracellular matrix alignment. CANCER RESEARCH COMMUNICATIONS 2022; 2:1471-1486. [PMID: 36530465 PMCID: PMC9757767 DOI: 10.1158/2767-9764.crc-22-0157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 08/03/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022]
Abstract
Extracellular matrix alignment contributes to metastasis in a number of cancers and is a known prognostic stromal factor; however, the mechanisms controlling matrix organization remain unclear. Cancer-associated fibroblasts (CAF) play a critical role in this process, particularly via matrix production and modulation of key signaling pathways controlling cell adhesion and contractility. Stroma normalization, as opposed to elimination, is a highly sought strategy, and screening for drugs that effectively alter extracellular matrix (ECM) alignment is a practical way to identify novel CAF-normalizing targets that modulate ECM organization. To meet this need, we developed a novel high-throughput screening platform in which fibroblast-derived matrices were produced in 384-well plates, imaged with automated confocal microscopy, and analyzed using a customized MATLAB script. This platform is a technical advance because it miniaturizes the assay, eliminates costly and time-consuming experimental steps, and streamlines data acquisition and analysis to enable high-throughput screening applications. As a proof of concept, this platform was used to screen a kinase inhibitor library to identify modulators of matrix alignment. A number of novel potential regulators were identified, including several receptor tyrosine kinases (c-MET, tropomyosin receptor kinase 1 (NTRK1), HER2/ERBB2) and the serine/threonine kinases protein kinase A, C, and G (PKA, PKC, and PKG). The expression of these regulators was analyzed in publicly available patient datasets to examine the association between stromal gene expression and patient outcomes.
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Affiliation(s)
- Caitlin E. Jones
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio
| | - Joe T. Sharick
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio
- The James Comprehensive Cancer Center, Program in Cancer Biology, The Ohio State University, Columbus, Ohio
| | - Steven T. Sizemore
- The James Comprehensive Cancer Center, Program in Cancer Biology, The Ohio State University, Columbus, Ohio
- Department of Radiation Oncology, The Ohio State University, Columbus, Ohio
| | - Edna Cukierman
- Cancer Signaling and Epigenetics, The Marvin and Concetta Greenberg Pancreatic Cancer Institute, Fox Chase Cancer Center, Temple Health, Philadelphia, Pennsylvania
| | - Anne Marie Strohecker
- The James Comprehensive Cancer Center, Program in Cancer Biology, The Ohio State University, Columbus, Ohio
- Department of Cancer Biology and Genetics, The Ohio State University, Columbus, Ohio
| | - Jennifer L. Leight
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio
- The James Comprehensive Cancer Center, Program in Cancer Biology, The Ohio State University, Columbus, Ohio
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Gao L, Han B, Dong X. The Androgen Receptor and Its Crosstalk With the Src Kinase During Castrate-Resistant Prostate Cancer Progression. Front Oncol 2022; 12:905398. [PMID: 35832549 PMCID: PMC9271573 DOI: 10.3389/fonc.2022.905398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 05/26/2022] [Indexed: 11/13/2022] Open
Abstract
While the androgen receptor (AR) signalling is the mainstay therapeutic target for metastatic prostate cancers, these tumours will inevitably develop therapy resistance to AR pathway inhibitors suggesting that prostate tumour cells possess the capability to develop mechanisms to bypass their dependency on androgens and/or AR to survive and progress. In many studies, protein kinases such as Src are reported to promote prostate tumour progression. Specifically, the pro-oncogene tyrosine Src kinase regulates prostate cancer cell proliferation, adhesion, invasion, and metastasis. Not only can Src be activated under androgen depletion, low androgen, and supraphysiological androgen conditions, but also through crosstalk with other oncogenic pathways. Reciprocal activations between Src and AR proteins had also been reported. These findings rationalize Src inhibitors to be used to treat castrate-resistant prostate tumours. Although several Src inhibitors had advanced to clinical trials, the failure to observe patient benefits from these studies suggests that further evaluation of the roles of Src in prostate tumours is required. Here, we summarize the interplay between Src and AR signalling during castrate-resistant prostate cancer progression to provide insights on possible approaches to treat prostate cancer patients.
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Affiliation(s)
- Lin Gao
- Department of Urologic Sciences, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- The Key Laboratory of Experimental Teratology, Ministry of Education and Department of Pathology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Bo Han
- The Key Laboratory of Experimental Teratology, Ministry of Education and Department of Pathology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xuesen Dong
- Department of Urologic Sciences, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- *Correspondence: Xuesen Dong,
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He Y, Xu W, Xiao YT, Huang H, Gu D, Ren S. Targeting signaling pathways in prostate cancer: mechanisms and clinical trials. Signal Transduct Target Ther 2022; 7:198. [PMID: 35750683 PMCID: PMC9232569 DOI: 10.1038/s41392-022-01042-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 05/25/2022] [Accepted: 05/30/2022] [Indexed: 12/11/2022] Open
Abstract
Prostate cancer (PCa) affects millions of men globally. Due to advances in understanding genomic landscapes and biological functions, the treatment of PCa continues to improve. Recently, various new classes of agents, which include next-generation androgen receptor (AR) signaling inhibitors (abiraterone, enzalutamide, apalutamide, and darolutamide), bone-targeting agents (radium-223 chloride, zoledronic acid), and poly(ADP-ribose) polymerase (PARP) inhibitors (olaparib, rucaparib, and talazoparib) have been developed to treat PCa. Agents targeting other signaling pathways, including cyclin-dependent kinase (CDK)4/6, Ak strain transforming (AKT), wingless-type protein (WNT), and epigenetic marks, have successively entered clinical trials. Furthermore, prostate-specific membrane antigen (PSMA) targeting agents such as 177Lu-PSMA-617 are promising theranostics that could improve both diagnostic accuracy and therapeutic efficacy. Advanced clinical studies with immune checkpoint inhibitors (ICIs) have shown limited benefits in PCa, whereas subgroups of PCa with mismatch repair (MMR) or CDK12 inactivation may benefit from ICIs treatment. In this review, we summarized the targeted agents of PCa in clinical trials and their underlying mechanisms, and further discussed their limitations and future directions.
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Affiliation(s)
- Yundong He
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, China.
| | - Weidong Xu
- Department of Urology, Shanghai Changzheng Hospital, Shanghai, China
| | - Yu-Tian Xiao
- Department of Urology, Shanghai Changzheng Hospital, Shanghai, China.,Department of Urology, Shanghai Changhai Hospital, Shanghai, China
| | - Haojie Huang
- Department of Urology, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Di Gu
- Department of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
| | - Shancheng Ren
- Department of Urology, Shanghai Changzheng Hospital, Shanghai, China.
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Miller KJ, Asim M. Unravelling the Role of Kinases That Underpin Androgen Signalling in Prostate Cancer. Cells 2022; 11:cells11060952. [PMID: 35326402 PMCID: PMC8946764 DOI: 10.3390/cells11060952] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/08/2022] [Accepted: 03/09/2022] [Indexed: 02/07/2023] Open
Abstract
The androgen receptor (AR) signalling pathway is the key driver in most prostate cancers (PCa), and is underpinned by several kinases both upstream and downstream of the AR. Many popular therapies for PCa that target the AR directly, however, have been circumvented by AR mutation, such as androgen receptor variants. Some upstream kinases promote AR signalling, including those which phosphorylate the AR and others that are AR-regulated, and androgen regulated kinase that can also form feed-forward activation circuits to promotes AR function. All of these kinases represent potentially druggable targets for PCa. There has generally been a divide in reviews reporting on pathways upstream of the AR and those reporting on AR-regulated genes despite the overlap that constitutes the promotion of AR signalling and PCa progression. In this review, we aim to elucidate which kinases—both upstream and AR-regulated—may be therapeutic targets and require future investigation and ongoing trials in developing kinase inhibitors for PCa.
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5
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Cusano E, Wong C, Taguedong E, Vaska M, Abedin T, Nixon N, Karim S, Tang P, Heng DYC, Ezeife D. Impact of Value Frameworks on the Magnitude of Clinical Benefit: Evaluating a Decade of Randomized Trials for Systemic Therapy in Solid Malignancies. Curr Oncol 2021; 28:4894-4928. [PMID: 34898590 PMCID: PMC8628676 DOI: 10.3390/curroncol28060412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/17/2021] [Accepted: 11/19/2021] [Indexed: 11/23/2022] Open
Abstract
In the era of rapid development of new, expensive cancer therapies, value frameworks have been developed to quantify clinical benefit (CB). We assessed the evolution of CB since the 2015 introduction of The American Society of Clinical Oncology and The European Society of Medical Oncology value frameworks. Randomized clinical trials (RCTs) assessing systemic therapies for solid malignancies from 2010 to 2020 were evaluated and CB (Δ) in 2010–2014 (pre-value frameworks (PRE)) were compared to 2015–2020 (POST) for overall survival (OS), progression-free survival (PFS), response rate (RR), and quality of life (QoL). In the 485 studies analyzed (12% PRE and 88% POST), the most common primary endpoint was PFS (49%), followed by OS (20%), RR (12%), and QoL (6%), with a significant increase in OS and decrease in RR as primary endpoints in the POST era (p = 0.011). Multivariable analyses revealed significant improvement in ΔOS POST (OR 2.86, 95% CI 0.46 to 5.26, p = 0.02) while controlling for other variables. After the development of value frameworks, median ΔOS improved minimally. The impact of value frameworks has yet to be fully realized in RCTs. Efforts to include endpoints shown to impact value, such as QoL, into clinical trials are warranted.
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Affiliation(s)
- Ellen Cusano
- Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
- Correspondence:
| | - Chelsea Wong
- Faculty of Science, University of Calgary, Calgary, AB T2N 1N4, Canada;
| | - Eddy Taguedong
- Faculty of Medicine and Health Sciences, McGill University, Montreal, QC H3A 0G4, Canada;
| | - Marcus Vaska
- Tom Baker Cancer Centre, Calgary, AB T2N 4N2, Canada; (M.V.); (T.A.); (N.N.); (S.K.); (P.T.); (D.Y.C.H.); (D.E.)
| | - Tasnima Abedin
- Tom Baker Cancer Centre, Calgary, AB T2N 4N2, Canada; (M.V.); (T.A.); (N.N.); (S.K.); (P.T.); (D.Y.C.H.); (D.E.)
| | - Nancy Nixon
- Tom Baker Cancer Centre, Calgary, AB T2N 4N2, Canada; (M.V.); (T.A.); (N.N.); (S.K.); (P.T.); (D.Y.C.H.); (D.E.)
| | - Safiya Karim
- Tom Baker Cancer Centre, Calgary, AB T2N 4N2, Canada; (M.V.); (T.A.); (N.N.); (S.K.); (P.T.); (D.Y.C.H.); (D.E.)
| | - Patricia Tang
- Tom Baker Cancer Centre, Calgary, AB T2N 4N2, Canada; (M.V.); (T.A.); (N.N.); (S.K.); (P.T.); (D.Y.C.H.); (D.E.)
| | - Daniel Y. C. Heng
- Tom Baker Cancer Centre, Calgary, AB T2N 4N2, Canada; (M.V.); (T.A.); (N.N.); (S.K.); (P.T.); (D.Y.C.H.); (D.E.)
| | - Doreen Ezeife
- Tom Baker Cancer Centre, Calgary, AB T2N 4N2, Canada; (M.V.); (T.A.); (N.N.); (S.K.); (P.T.); (D.Y.C.H.); (D.E.)
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Combination Treatment Options for Castration-Resistant Prostate Cancer. Prostate Cancer 2021. [DOI: 10.36255/exonpublications.prostatecancer.combinationtreatment.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] Open
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Chau V, Madan RA, Aragon-Ching JB. Protein kinase inhibitors for the treatment of prostate cancer. Expert Opin Pharmacother 2021; 22:1889-1899. [PMID: 33989112 DOI: 10.1080/14656566.2021.1925250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Protein kinases have emerged as targetable pathways used in metastatic prostate cancer given their role in prostatic tumor growth, proliferation and metastases. Protein kinase inhibitors are small molecules that target varying pathways including the breakpoint cluster region (BCR)-Abelson tyrosine kinase (ABL), colony stimulating factor-1 receptor (CSF1R), vascular endothelial growth factor (VEGF)/VEGF receptor (VEGFR) and phosphoinositide 3-kinase (PI3K) pathways and have been studied in prostate cancer trials with variable results. In particular, cabozantinib when used in combination trials and ipatasertib, when used with abiraterone in patients who harbor phosphatase and tensin homologue (PTEN) loss, have been promising. AREAS COVERED This article reviews the key early and late phase clinical trials currently investigating the use of protein kinase inhibitors in prostate cancer. EXPERT OPINION While multiple kinase inhibitors show promising results in prostate cancer, none have yet garnered Food and Drug Administration (FDA) approval. Studies are ongoing with the best candidate drugs discussed herein. However, multiple drugs have failed primary endpoints in prostate cancer. Therefore, further understanding of the potential mechanisms of resistance, combination and trial design of combination therapy may help pave the way for targeting kinase inhibition in prostate cancer.
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Affiliation(s)
- Vincent Chau
- Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Ravi A Madan
- Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Jeanny B Aragon-Ching
- Genitourinary Cancers, Inova Medical Group, Inova Schar Cancer Institute, Fairfax, VA, USA.,Department of Internal Medicine, University of Virginia University School of Medicine, Charlottesville, VA, USA
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Miller DR, Ingersoll MA, Teply BA, Lin MF. Targeting treatment options for castration-resistant prostate cancer. AMERICAN JOURNAL OF CLINICAL AND EXPERIMENTAL UROLOGY 2021; 9:101-120. [PMID: 33816699 PMCID: PMC8012826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 01/20/2021] [Indexed: 06/12/2023]
Abstract
Prostate cancer (PCa) is the most commonly diagnosed solid tumor and the second leading cause of cancer-related deaths in U.S. men in 2020. Androgen-deprivation therapy (ADT) is the standard of care for metastatic PCa. Unfortunately, PCa relapse often occurs one to two years after initiation of ADT, resulting in the development of castration-resistant PCa (CRPCa), a lethal disease. While several anticancer agents such as docetaxel, abiraterone acetate, and enzalutamide are currently utilized to extend a patient's life after development of CRPCa, patients will eventually succumb to the disease. Hence, while targeting androgen signaling and utilization of docetaxel remain the most crucial agents for many of these combinations, many studies are attempting to exploit other vulnerabilities of PCa cells, such as inhibition of key survival proteins, anti-angiogenesis agents, and immunotherapies. This review will focus on discussing recent advances on targeting therapy. Several novel small molecules will also be discussed.
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Affiliation(s)
- Dannah R Miller
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical CenterOmaha, Nebraska, United States of America
- Department of Pharmacology, University of Colorado Anschutz Medical CampusAurora, CO, United States of America
| | - Matthew A Ingersoll
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical CenterOmaha, Nebraska, United States of America
- Department of Pharmacology, Creighton UniversityOmaha, Nebraska, United States of America
| | - Benjamin A Teply
- Division of Hematology/Oncology, Department of Internal Medicine, University of Nebraska Medical CenterOmaha, Nebraska, United States of America
- Fred & Pamela Buffett Cancer Center, University of Nebraska Medical CenterOmaha, Nebraska, United States of America
| | - Ming-Fong Lin
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical CenterOmaha, Nebraska, United States of America
- Fred & Pamela Buffett Cancer Center, University of Nebraska Medical CenterOmaha, Nebraska, United States of America
- Section of Urology, Department of Surgery, University of Nebraska Medical CenterOmaha, Nebraska, United States of America
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical CenterOmaha, Nebraska, United States of America
- College of Pharmacy, Kaohsiung Medical UniversityKaohsiung, Taiwan
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Spetsieris N, Boukovala M, Weldon JA, Tsikkinis A, Hoang A, Aparicio A, Tu SM, Araujo JC, Zurita AJ, Corn PG, Pagliaro L, Kim J, Wang J, Subudhi SK, Tannir NM, Logothetis CJ, Troncoso P, Wang X, Wen S, Efstathiou E. A Phase 2 Trial of Abiraterone Followed by Randomization to Addition of Dasatinib or Sunitinib in Men With Metastatic Castration-Resistant Prostate Cancer. Clin Genitourin Cancer 2021; 19:22-31.e5. [PMID: 32675015 PMCID: PMC10014037 DOI: 10.1016/j.clgc.2020.05.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 05/19/2020] [Accepted: 05/19/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND Resistance to novel androgen signaling inhibition and metastatic castration-resistant prostate cancer (mCRPC) progression is likely dependent on tumor microenvironment interactions. The Src pathway and neoangiogenesis have been implicated in prostate cancer progression. We studied the effect of adding the targeted agents dasatinib and sunitinib to abiraterone acetate (AA) in men with mCRPC. PATIENTS AND METHODS In this open-label randomized phase 2 study, mCRPC patients received AA. At resistance to AA, they were randomized 1:1 to combination with dasatinib or sunitinib. At second progression, patients crossed over. The primary end point was time to treatment failure (TTF), defined as time to progression or death. Secondary end points included overall survival and safety. RESULTS From March 2011 to February 2015, a total of 179 patients were enrolled and 132 subsequently randomized. Median TTF was 5.7 months in the dasatinib group and 5.5 months in the sunitinib group. There was no difference between the two groups in terms of TTF (hazard ratio, 0.85; 95% confidence interval, 0.59-1.22). Median overall survival from study entry was 26.3 months in the dasatinib group and 27.7 months in the sunitinib group (hazard ratio, 1.02; 95% confidence interval, 0.71-1.47). Grade 3 or higher adverse events related to study medication were more frequent with sunitinib (n = 44, 46%) compared to dasatinib (n = 26, 24%). At data cutoff, 7 patients were experiencing a continuous response to AA, with a median duration of treatment of 5.7 years. CONCLUSION There is no difference in overall survival and TTF between dasatinib and sunitinib combined with abiraterone in the treatment of patients with bone mCRPC.
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Affiliation(s)
- Nicholas Spetsieris
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Myrto Boukovala
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Justin A Weldon
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Alexandros Tsikkinis
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Anh Hoang
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Ana Aparicio
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Shi-Ming Tu
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - John C Araujo
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Amado J Zurita
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Paul G Corn
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Lance Pagliaro
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Jeri Kim
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Jennifer Wang
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Sumit K Subudhi
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Nizar M Tannir
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Christopher J Logothetis
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Patricia Troncoso
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Xuemei Wang
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Sijin Wen
- Department of Biostatistics, West Virginia University School of Public Health, Morgantown, WV
| | - Eleni Efstathiou
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX.
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Carpenter VJ, Patel BB, Autorino R, Smith SC, Gewirtz DA, Saleh T. Senescence and castration resistance in prostate cancer: A review of experimental evidence and clinical implications. Biochim Biophys Acta Rev Cancer 2020; 1874:188424. [PMID: 32956765 DOI: 10.1016/j.bbcan.2020.188424] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/07/2020] [Accepted: 09/08/2020] [Indexed: 01/10/2023]
Abstract
The development of Castration-Resistant Prostate Cancer (CRPC) remains a major challenge in the treatment of this disease. While Androgen Deprivation Therapy (ADT) can result in tumor shrinkage, a primary response of Prostate Cancer (PCa) cells to ADT is a senescent growth arrest. As a response to cancer therapies, senescence has often been considered as a beneficial outcome due to its association with stable growth abrogation, as well as the potential for immune system activation via the Senescence-Associated Secretory Phenotype (SASP). However, there is increasing evidence that not only can senescent cells regain proliferative capacity, but that senescence contributes to deleterious effects of cancer chemotherapy, including disease recurrence. Notably, the preponderance of work investigating the consequences of therapy-induced senescence on tumor progression has been performed in non-PCa models. Here, we summarize the evidence that ADT promotes a senescent response in PCa and postulate mechanisms by which senescence may contribute to the development of castration-resistance. Primarily, we suggest that ADT-induced senescence may support CRPC development via escape from senescence, by cell autonomous-reprogramming, and by the formation of a pro-tumorigenic SASP. However, due to the scarcity of direct evidence from PCa models, the consequences of ADT-induced senescence outlined here remain speculative until the relationship between senescence and CRPC can be experimentally defined.
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Affiliation(s)
- Valerie J Carpenter
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Bhaumik B Patel
- Department of Internal Medicine, Division of Hematology, Oncology & Palliative Care, VCU Health, Richmond, VA, USA
| | - Riccardo Autorino
- Department of Surgery, Division of Urology, VCU Health, Richmond, VA, USA
| | | | - David A Gewirtz
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Tareq Saleh
- The Department of Basic Medical Sciences, Faculty of Medicine, The Hashemite University, Zarqa, Jordan.
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11
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Src-family kinase inhibitors block early steps of caveolin-1-enhanced lung metastasis by melanoma cells. Biochem Pharmacol 2020; 177:113941. [PMID: 32240650 DOI: 10.1016/j.bcp.2020.113941] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 03/26/2020] [Indexed: 02/08/2023]
Abstract
In advanced stages of cancer disease, caveolin-1 (CAV1) expression increases and correlates with increased migratory and invasive capacity of the respective tumor cells. Previous findings from our laboratory revealed that specific ECM-integrin interactions and tyrosine-14 phosphorylation of CAV1 are required for CAV1-enhanced melanoma cell migration, invasion and metastasis in vivo. In this context, CAV1 phosphorylation on tyrosine-14 mediated by non-receptor Src-family tyrosine kinases seems to be important; however, the effect of Src-family kinase inhibitors on CAV1-enhanced metastasis in vivo has not been studied. Here, we evaluated the effect of CAV1 and c-Abl overexpression, as well as the use of the Src-family kinase inhibitors, PP2 and dasatinib (more specific for Src/Abl) in lung metastasis of B16F10 melanoma cells. Overexpression of CAV1 and c-Abl enhanced CAV1 phosphorylation and the metastatic potential of the B16F10 murine melanoma cells. Alternatively, treatment with PP2 or dasatinib for 2 h reduced CAV1 tyrosine-14 phosphorylation and levels recovered fully within 12 h of removing the inhibitors. Nonetheless, pre-treatment of cells with these inhibitors for 2 h sufficed to prevent migration, invasion and trans-endothelial migration in vitro. Importantly, the transient decrease in CAV1 phosphorylation by these kinase inhibitors prevented early steps of CAV1-enhanced lung metastasis by B16F10 melanoma cells injected into the tail vein of mice. In conclusion, this study underscores the relevance of CAV1 tyrosine-14 phosphorylation by Src-family kinases during the first steps of the metastatic sequence promoted by CAV1. These findings open up potential options for treatment of metastatic tumors in patients in which Src-family kinase activation and CAV1 overexpression favor dissemination of cancer cells to secondary sites.
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