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Li D, Zhang L, Xu Y, Wu X, Hua S, Jiang Y, Huang Q, Gao Y. Exploration of the diagnostic capacity of PSAMR combined with PI-RADS scoring for clinically significant prostate cancer and establishment and validation of the Nomogram prediction model. J Cancer Res Clin Oncol 2023; 149:11309-11317. [PMID: 37365430 DOI: 10.1007/s00432-023-05008-2] [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: 05/14/2023] [Accepted: 06/16/2023] [Indexed: 06/28/2023]
Abstract
PURPOSE The objective of this investigation was to explore the diagnostic capability of Prostate Specific Antigen Mass Ratio (PSAMR) combined with Prostate Imaging Reporting and Data System (PI-RADS) scoring for clinically significant prostate cancer (CSPC), develop and validate a Nomogram prediction model for the probability of prostate cancer occurrence in patients who have not undergone prostate biopsy. METHODS Initially, we retrospectively collected clinical and pathological data of patients who underwent trans-perineal prostate puncture at Yijishan Hospital of Wanan Medical College from July 2021 to January 2023. Through logistic univariate and multivariate regression analysis, independent risk factors for CSPC were determined. Receiver Operating Characteristic (ROC) curves were generated to compare the ability of different factors for diagnosis of CSPC. Then, we split the dataset into a training set and validation set, compared their heterogeneity, and developed a Nomogram prediction model based on the training set. Finally, we validated the Nomogram prediction model in terms of discrimination, calibration, and clinical usefulness. RESULTS Logistic multivariate regression analysis illustrated that age [64-69 (OR = 2.736, P = 0.029); 69-75 (OR = 4.728, P = 0.001); > 75 (OR = 11.344, P < 0.001)], PSAMR [0.44-0.73 (OR = 4.144, P = 0.028); 0.73-1.64(OR = 13.022, P < 0.001); > 1.64(OR = 50.541, P < 0.001)], and PI-RADS score [4 points (OR = 7.780, P < 0.001); 5 points (OR = 24.533, P < 0.001)] were independent risk factors for CSPC. The Area Under the Curve (AUC) of the ROC curves of PSA, PSAMR, PI-RADS score, and PSAMR combined with PI-RADS score were respectively 0.797, 0.874, 0.889, and 0.928. The performance of PSAMR and PI-RADS score for diagnosis of CSPC was superior to PSA, but inferior to PSAMR combined with PI-RADS. Age, PSAMR, and PI-RADS were included in the Nomogram prediction model. The AUCs of the training set ROC curve and the validation set ROC curve were 0.943 (95% CI 0.917-0.970) and 0.878 (95% CI 0.816-0.940), respectively, in the discrimination validation. The calibration curve showed good consistency, and the decision analysis curve suggested the model had good clinical efficacy. CONCLUSIONS We found that PSAMR combined with PI-RADS scoring had a strong diagnostic capability for CSPC, and provided a Nomogram prediction model to predict the probability of prostate cancer occurrence combined with clinical data.
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Affiliation(s)
- Dengke Li
- Department of Urology, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, 241001, Wuhu, Anhui, People's Republic of China
| | - Lulu Zhang
- Department of Urology, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, 241001, Wuhu, Anhui, People's Republic of China
| | - Yujie Xu
- Department of Urology, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, 241001, Wuhu, Anhui, People's Republic of China
| | - Xun Wu
- Department of Urology, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, 241001, Wuhu, Anhui, People's Republic of China
| | - Shaokui Hua
- Department of Urology, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, 241001, Wuhu, Anhui, People's Republic of China
| | - Yan Jiang
- Department of Urology, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, 241001, Wuhu, Anhui, People's Republic of China
| | - Qunlian Huang
- Department of Urology, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, 241001, Wuhu, Anhui, People's Republic of China.
| | - Yukui Gao
- Department of Urology, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, 241001, Wuhu, Anhui, People's Republic of China.
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Peng Y, Jiang H, Li B, Liu Y, Guo B, Gan W. A NIR-Activated and Mild-Temperature-Sensitive Nanoplatform with an HSP90 Inhibitor for Combinatory Chemotherapy and Mild Photothermal Therapy in Cancel Cells. Pharmaceutics 2023; 15:2252. [PMID: 37765221 PMCID: PMC10537501 DOI: 10.3390/pharmaceutics15092252] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 08/11/2023] [Accepted: 08/12/2023] [Indexed: 09/29/2023] Open
Abstract
Mild photothermal therapy (PTT) shows great potential to treat cancers while avoiding unwanted damage to surrounding normal cells. However, the efficacy of mild PTT is normally moderate because of the low hyperthermia temperature and limited light penetration depth. Chemotherapy has unlimited penetration but often suffers from unsatisfactory efficacy in view of the occurrence of drug resistance, suboptimal drug delivery and release profile. As a result, the combinatory of chemotherapy and mild PTT would integrate their advantages and overcome the shortcomings. Herein, we synthesized an NIR-activatable and mild-temperature-sensitive nanoplatform (BDPII-gel@TSL) composed of temperature-sensitive liposomes (TSL), heat shock protein 90 (HSP90) inhibitor (geldanamycin) and photothermal agent (BDPII), for dual chemotherapy and mild PTT in cancer cells. BDPII, constructed with donor-acceptor moieties, acts as an excellent near-infrared (NIR) photothermal agent (PTA) with a high photothermal conversion efficiency (80.75%). BDPII-containing TSLs efficiently produce a mild hyperthermia effect (42 °C) under laser irradiation (808 nm, 0.5 W cm-2). Importantly, the phase transformation of TSL leads to burst release of geldanamycin from BDPII-gel@TSL, and this contributes to down-regulation of the overexpression of HSP90, ensuring efficient inhibition of cancer cell growth. This research provides a dual-sensitive synergistic therapeutic strategy for cancer cell treatment.
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Affiliation(s)
- Yingying Peng
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, China; (Y.P.); (H.J.); (B.L.); (Y.L.)
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Hanlin Jiang
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, China; (Y.P.); (H.J.); (B.L.); (Y.L.)
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Bifei Li
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, China; (Y.P.); (H.J.); (B.L.); (Y.L.)
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Yue Liu
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, China; (Y.P.); (H.J.); (B.L.); (Y.L.)
- Shenzhen Key Laboratory of Advanced Functional Carbon Materials Research and Comprehensive Application, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Bing Guo
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, China; (Y.P.); (H.J.); (B.L.); (Y.L.)
- Shenzhen Key Laboratory of Advanced Functional Carbon Materials Research and Comprehensive Application, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Wei Gan
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, China; (Y.P.); (H.J.); (B.L.); (Y.L.)
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
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Mao F, Kong Y, Liu J, Rao X, Li C, Donahue K, Zhang Y, Jones K, Zhang Q, Xu W, Liu X. Diptoindonesin G antagonizes AR signaling and enhances the efficacy of antiandrogen therapy in prostate cancer. Prostate 2022; 82:917-932. [PMID: 35322879 PMCID: PMC9035130 DOI: 10.1002/pros.24336] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 11/22/2021] [Accepted: 12/14/2021] [Indexed: 01/27/2023]
Abstract
BACKGROUND The androgen receptor (AR) signaling pathway has been well demonstrated to play a crucial role in the development, progression, and drug resistance of prostate cancer. Although the current anti-androgen therapy could significantly benefit prostate cancer patients initially, the efficacy of the single drug usually lasts for a relatively short period, as drug resistance quickly emerges. METHODS We have performed an unbiased bioinformatics analysis using the RNA-seq results in 22Rv1 cells to identify the cell response toward Dip G treatment. The RNA-seq results were validated by qRT-PCR. Protein levels were detected by western blot or staining. Cell viability was measured by Aquabluer and colony formation assay. RESULTS Here, we identified that Diptoindonesin G (Dip G), a natural extracted compound, could promote the proteasome degradation of AR and polo-like kinase 1 (PLK1) through modulating the activation of CHIP E3 ligase. Administration of Dip G has shown a profound efficiency in the suppression of AR and PLK1, not only in androgen-dependent LNCaP cells but also in castration-resistant and enzalutamide-resistant cells in a CHIP-dependent manner. Through co-targeting the AR signaling, Dip G robustly improved the efficacy of HSP90 inhibitors and enzalutamide in both human prostate cancer cells and in vivo xenograft mouse model. CONCLUSIONS Our results revealed that Dip G-mediated AR degradation would be a promising and valuable therapeutic strategy in the clinic.
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Affiliation(s)
- Fengyi Mao
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40506, USA
| | - Yifan Kong
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40506, USA
| | - Jinghui Liu
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40506, USA
| | - Xiongjian Rao
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40506, USA
| | - Chaohao Li
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40506, USA
| | - Kristine Donahue
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Yanquan Zhang
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40506, USA
| | - Katelyn Jones
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40506, USA
| | - Qiongsi Zhang
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40506, USA
| | - Wei Xu
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Xiaoqi Liu
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40506, USA
- Markey Cancer Center, University of Kentucky, Lexington, KY 40506, USA
- To whom correspondence should be addressed: Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40506, USA. Tel: (859) 562-2006;
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Fu Z, Jia B. Advances in the role of heat shock protein 90 in prostate cancer. Andrologia 2022; 54:e14376. [PMID: 35075667 DOI: 10.1111/and.14376] [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: 12/12/2021] [Revised: 01/10/2022] [Accepted: 01/06/2022] [Indexed: 02/07/2023] Open
Abstract
Prostate cancer is one of the most common tumours in adult men and heat shock proteins play an important biological function in prostate cancer as molecular chaperones involved in the pathogenesis, diagnosis, treatment and prognosis of a wide range of tumours. Among them, increased expression of HSP90, a member of the heat shock protein family, is associated with resistance to prostate cancer denervation and can promote tumour resistance, invasion and bone metastasis, thus making prostate cancer more difficult to treat. Therefore, targeting HSP90 in prostate cancer could be a promising strategy for oncology treatment. This paper reviews the structure and function of HSP90, HSP90-mediated denudation resistance in prostate cancer and HSP90-targeted antitumor therapy, with the aim of providing a new theoretical basis for prostate cancer treatment options in the clinical setting.
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Affiliation(s)
- Zheng Fu
- Guizhou Medical University, Guiyang, China
| | - Benzhong Jia
- The Affiliated Hospital of Guizhou Medical University, Guiyang, China
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5
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Mathien S, Tesnière C, Meloche S. Regulation of Mitogen-Activated Protein Kinase Signaling Pathways by the Ubiquitin-Proteasome System and Its Pharmacological Potential. Pharmacol Rev 2021; 73:263-296. [PMID: 34732541 DOI: 10.1124/pharmrev.120.000170] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Mitogen-activated protein kinase (MAPK) cascades are evolutionarily conserved signaling pathways that play essential roles in transducing extracellular environmental signals into diverse cellular responses to maintain homeostasis. These pathways are classically organized into an architecture of three sequentially acting protein kinases: a MAPK kinase kinase that phosphorylates and activates a MAPK kinase, which in turn phosphorylates and activates the effector MAPK. The activity of MAPKs is tightly regulated by phosphorylation of their activation loop, which can be modulated by positive and negative feedback mechanisms to control the amplitude and duration of the signal. The signaling outcomes of MAPK pathways are further regulated by interactions of MAPKs with scaffolding and regulatory proteins. Accumulating evidence indicates that, in addition to these mechanisms, MAPK signaling is commonly regulated by ubiquitin-proteasome system (UPS)-mediated control of the stability and abundance of MAPK pathway components. Notably, the biologic activity of some MAPKs appears to be regulated mainly at the level of protein turnover. Recent studies have started to explore the potential of targeted protein degradation as a powerful strategy to investigate the biologic functions of individual MAPK pathway components and as a new therapeutic approach to overcome resistance to current small-molecule kinase inhibitors. Here, we comprehensively review the mechanisms, physiologic importance, and pharmacological potential of UPS-mediated protein degradation in the control of MAPK signaling. SIGNIFICANCE STATEMENT: Accumulating evidence highlights the importance of targeted protein degradation by the ubiquitin-proteasome system in regulating and fine-tuning the signaling output of mitogen-activated protein kinase (MAPK) pathways. Manipulating protein levels of MAPK cascade components may provide a novel approach for the development of selective pharmacological tools and therapeutics.
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Affiliation(s)
- Simon Mathien
- Institute for Research in Immunology and Cancer, Montreal, Quebec, Canada (S.Ma., C.T., S.Me.); and Molecular Biology Program, Faculty of Medicine (C.T., S.Me.) and Department of Pharmacology and Physiology (S.Me.), Université de Montréal, Montreal, Quebec, Canada
| | - Chloé Tesnière
- Institute for Research in Immunology and Cancer, Montreal, Quebec, Canada (S.Ma., C.T., S.Me.); and Molecular Biology Program, Faculty of Medicine (C.T., S.Me.) and Department of Pharmacology and Physiology (S.Me.), Université de Montréal, Montreal, Quebec, Canada
| | - Sylvain Meloche
- Institute for Research in Immunology and Cancer, Montreal, Quebec, Canada (S.Ma., C.T., S.Me.); and Molecular Biology Program, Faculty of Medicine (C.T., S.Me.) and Department of Pharmacology and Physiology (S.Me.), Université de Montréal, Montreal, Quebec, Canada
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Zhang R, Huang C, Xiao X, Zhou J. Improving Strategies in the Development of Protein-Downregulation-Based Antiandrogens. ChemMedChem 2021; 16:2021-2033. [PMID: 33554455 DOI: 10.1002/cmdc.202100033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Indexed: 12/20/2022]
Abstract
The androgen receptor (AR) plays a crucial role in the occurrence and development of prostate cancer (PCa), and its signaling pathway remains active in castration-resistant prostate cancer (CRPC) patients. The resistance against antiandrogen drugs in current clinical use is a major challenge for the treatment of PCa, and thus the development of new generations of antiandrogens is under high demand. Recently, strategies for downregulating the AR have attracted significant attention, given its potential in the discovery and development of new antiandrogens, including G-quadruplex stabilizers, ROR-γ inhibitors, AR-targeting proteolysis targeting chimeras (PROTACs), and other selective AR degraders (SARDs), which are able to overcome current resistance mechanisms such as acquired AR mutations, the expression of AR variable splices, or overexpression of AR. This review summarizes the various strategies for downregulating the AR protein, at either the mRNA or protein level, thus providing new ideas for the development of promising antiandrogen drugs.
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Affiliation(s)
- Rongyu Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, China.,Drug Development and Innovation Center, College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, China
| | - Chenchao Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, China
| | - Xiaohui Xiao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, China.,Drug Development and Innovation Center, College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, China
| | - Jinming Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, China.,Drug Development and Innovation Center, College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, China
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Taechowisan T, Puckdee W, Waratchareeyakul W, Phutdhawong WS. Anti-Inflammatory Activity of Geldanamycin and Its Derivatives in LPS-Induced RAW 264.7 Cells. ACTA ACUST UNITED AC 2019. [DOI: 10.4236/aim.2019.94024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Zhang Z, Li HM, Zhou C, Li Q, Ma L, Zhang Z, Sun Y, Wang L, Zhang X, Zhu B, Hong YS, Wu CZ, Liu H. Non-benzoquinone geldanamycin analogs trigger various forms of death in human breast cancer cells. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2016; 35:149. [PMID: 27658586 PMCID: PMC5034425 DOI: 10.1186/s13046-016-0428-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 09/14/2016] [Indexed: 11/22/2022]
Abstract
Background Hsp90 proteins are important therapeutic targets for many anti-cancer drugs in clinical trials. Geldanamycin (GA) was identified as the first natural inhibitor of Hsp90, increasing evidence suggests that GA was not a good choice for clinical trials. In this study, we investigated two new non-benzoquinone geldanamycin analogs of Hsp90 inhibitors, DHQ3 and 17-demethoxy-reblastatin (17-DR), to explore the molecular mechanisms of their anti-cancer activity in vivo and vitro. Methods MTT and colony formation assays were used to measure cell viability. Flow cytometry, DAPI staining, ATP assay, electron microscopy, western blots, siRNAs transfection and immunofluorescence were used to determine the molecular mechanism of DHQ3- or 17-DR-induced different forms of death in human breast cancer MDA-MB-231 cells. Malachite green reagent was used to measure ATPase activity of the analogs. Results DHQ3 and 17-DR presented efficiently inhibitory effect in MDA-MB-231 cell lines, and DHQ3 induced necroptosis by activation of the RIP1-RIP3-MLKL necroptosis cascade. And DHQ3-induced cell death was inhibited by a necroptosis inhibitor, necrostatin-1 (Nec-1), but not by a caspase inhibitor z-VAD-fmk. On the other hand, 17-DR induced apoptosis in MDA-MB-231 cells, indicating a caspase-dependent killing mechanism. We further demonstrated that down-regulation of RIP1 and RIP3 by siRNA protected against DHQ3 but not 17-DR induced cell death. These results were confirmed by electron microscopy. DHQ3 and 17-DR induced the degradation of Hsp90 client proteins, and they showed strong antitumor effects in MDA-MB-231 cell-xenografted nude mice. Conclusions These findings supported that DHQ3 and 17-DR induce different forms of death in some cancer cell line via activation of different pathways. All of the results provided evidence for its anti-tumorigentic action with low hepatotoxicity in vivo, making them promising anti-breast cancer agents.
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Affiliation(s)
- Zhirui Zhang
- Faculty of Pharmacy, Bengbu Medical College, Bengbu, 233000, Anhui, People's Republic of China
| | - Hong-Mei Li
- Faculty of Pharmacy, Bengbu Medical College, Bengbu, 233000, Anhui, People's Republic of China
| | - Can Zhou
- Faculty of Pharmacy, Bengbu Medical College, Bengbu, 233000, Anhui, People's Republic of China
| | - Qixiang Li
- Faculty of Pharmacy, Bengbu Medical College, Bengbu, 233000, Anhui, People's Republic of China
| | - Linyan Ma
- Faculty of Pharmacy, Bengbu Medical College, Bengbu, 233000, Anhui, People's Republic of China
| | - Zixuan Zhang
- Department of Clinical medicine, Bengbu Medical College, Bengbu, 233000, Anhui, People's Republic of China
| | - Yiming Sun
- Faculty of Pharmacy, Bengbu Medical College, Bengbu, 233000, Anhui, People's Republic of China
| | - Lirong Wang
- Department of Pharmaceutical Sciences, School of Pharmacy, Computational Chemical Genomics Screening Center, Pittsburgh, PA, USA
| | - Xudong Zhang
- School of Medicine and Public Health, University of Newcastle, Newcastle, NSW, Australia
| | - Bing Zhu
- Department of Gastrointestinal Surgery, The first Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, Anhui, People's Republic of China
| | - Young-Soo Hong
- Chemical Biology Research Center, KRIBB, Cheongju, 28116, Republic of Korea
| | - Cheng-Zhu Wu
- Faculty of Pharmacy, Bengbu Medical College, Bengbu, 233000, Anhui, People's Republic of China.
| | - Hao Liu
- Faculty of Pharmacy, Bengbu Medical College, Bengbu, 233000, Anhui, People's Republic of China.
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Reduced Contractility and Motility of Prostatic Cancer-Associated Fibroblasts after Inhibition of Heat Shock Protein 90. Cancers (Basel) 2016; 8:cancers8090077. [PMID: 27563925 PMCID: PMC5040979 DOI: 10.3390/cancers8090077] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 07/25/2016] [Accepted: 08/03/2016] [Indexed: 01/31/2023] Open
Abstract
Background: Prostate cancer-associated fibroblasts (CAF) can stimulate malignant progression and invasion of prostatic tumour cells via several mechanisms including those active in extracellular matrix; Methods: We isolated CAF from prostate cancer patients of Gleason Score 6–10 and confirmed their cancer-promoting activity using an in vivo tumour reconstitution assay comprised of CAF and BPH1 cells. We tested the effects of heat shock protein 90 (HSP90) inhibitors upon reconstituted tumour growth in vivo. Additionally, CAF contractility was measured in a 3D collagen contraction assay and migration was measured by scratch assay; Results: HSP90 inhibitors dipalmitoyl-radicicol and 17-dimethylaminoethylamino-17-demethoxygeldanamycin (17-DMAG) reduced tumour size and proliferation in CAF/BPH1 reconstituted tumours in vivo. We observed that the most contractile CAF were derived from patients with lower Gleason Score and of younger age compared with the least contractile CAF. HSP90 inhibitors radicicol and 17-DMAG inhibited contractility and reduced the migration of CAF in scratch assays. Intracellular levels of HSP70 and HSP90 were upregulated upon treatment with HSP90 inhibitors. Inhibition of HSP90 also led to a specific increase in transforming growth factor beta 2 (TGFβ2) levels in CAF; Conclusions: We suggest that HSP90 inhibitors act not only upon tumour cells, but also on CAF in the tumour microenvironment.
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10
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Peng R, Li Z, Lin Z, Wang Y, Wang W, Hu B, Wang X, Zhang J, Wang Y, Zhou R, Lu C, Shen Y, Wang J, Shi G. The HSP90 inhibitor 17-PAG effectively inhibits the proliferation and migration of androgen-independent prostate cancer cells. Am J Cancer Res 2015; 5:3198-3209. [PMID: 26693070 PMCID: PMC4656741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 09/08/2015] [Indexed: 06/05/2023] Open
Abstract
Castration-resistant prostate cancer (CRPC) ultimately occurs after a period of treatment with androgen deprivation therapy. Furthermore, CRPC patients can only derive limited survival benefits from traditional cytotoxic drugs. HSP90, which is a molecular chaperone, plays a vital role in client protein processing and maintaining the function of cells. HSP90 is usually overexpressed in prostate cancer tissues, which makes it a potential target for managing prostate cancer. Geldanamycin (GA), which was recognized as the first natural HSP90 inhibitor, has demonstrated potent anti-tumor efficacy in large-scale pre-clinical studies, but its application in the clinic is not permitted due to its liver toxicity and unstable physical properties. In this study, we report a new GA derivative, 17-PAG (17-(propynylamino)-17-demethoxygeldanamycin), which demonstrates highly effective anti-tumor activity against androgen-independent prostate cancer cells. Treating cells with 17-PAG dose-dependently suppressed proliferation, reduced colony formation and induced apoptosis of DU-145/C4-2B cells. Moreover, 17-PAG suppressed the migration and invasion of DU-145/C4-2B cells by regulating epithelial mesenchymal transition (EMT). 17-PAG also downregulated the HSP90 client proteins, including Her2, EGFR, C-Raf, AKT, p-AKT, and CDK4. Animal assays confirmed that 17-PAG shows strong anti-tumor effects with no obvious organ toxicity in DU-145 cell xenografted nude mice. These results provide us with a potential target for treating androgen-independent prostate cancer in a safe and effective manner.
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Affiliation(s)
- Ruixian Peng
- Department of Urology, The Fifth People’s Hospital of Shanghai, Fudan UniversityShanghai 200240, P. R. China
- Urology Research Center, Fudan UniversityShanghai 200240, P. R. China
| | - Zhenyu Li
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong UniversityNo. 44 West Wenhua Road, Jinan 250012, Shandong, P. R. China
| | - Zhiyuan Lin
- Department of Urology, The Fifth People’s Hospital of Shanghai, Fudan UniversityShanghai 200240, P. R. China
- Urology Research Center, Fudan UniversityShanghai 200240, P. R. China
| | - Yang Wang
- Department of Urology, The Fifth People’s Hospital of Shanghai, Fudan UniversityShanghai 200240, P. R. China
- Urology Research Center, Fudan UniversityShanghai 200240, P. R. China
| | - Wei Wang
- Department of Urology, The Fifth People’s Hospital of Shanghai, Fudan UniversityShanghai 200240, P. R. China
- Urology Research Center, Fudan UniversityShanghai 200240, P. R. China
| | - Bo Hu
- Department of Urology, The Fifth People’s Hospital of Shanghai, Fudan UniversityShanghai 200240, P. R. China
- Urology Research Center, Fudan UniversityShanghai 200240, P. R. China
| | - Xilong Wang
- Department of Urology, The Fifth People’s Hospital of Shanghai, Fudan UniversityShanghai 200240, P. R. China
- Urology Research Center, Fudan UniversityShanghai 200240, P. R. China
| | - Jun Zhang
- Department of Urology, The Fifth People’s Hospital of Shanghai, Fudan UniversityShanghai 200240, P. R. China
- Urology Research Center, Fudan UniversityShanghai 200240, P. R. China
| | - Yangyun Wang
- Department of Urology, The Fifth People’s Hospital of Shanghai, Fudan UniversityShanghai 200240, P. R. China
- Urology Research Center, Fudan UniversityShanghai 200240, P. R. China
| | - Renyuan Zhou
- Department of Urology, The Fifth People’s Hospital of Shanghai, Fudan UniversityShanghai 200240, P. R. China
- Urology Research Center, Fudan UniversityShanghai 200240, P. R. China
| | - Chunhua Lu
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong UniversityNo. 44 West Wenhua Road, Jinan 250012, Shandong, P. R. China
| | - Yuemao Shen
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong UniversityNo. 44 West Wenhua Road, Jinan 250012, Shandong, P. R. China
| | - Jifeng Wang
- Department of Urology, The Fifth People’s Hospital of Shanghai, Fudan UniversityShanghai 200240, P. R. China
- Urology Research Center, Fudan UniversityShanghai 200240, P. R. China
| | - Guowei Shi
- Department of Urology, The Fifth People’s Hospital of Shanghai, Fudan UniversityShanghai 200240, P. R. China
- Urology Research Center, Fudan UniversityShanghai 200240, P. R. China
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