1
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Iksen, Witayateeraporn W, Hardianti B, Pongrakhananon V. Comprehensive review of Bcl-2 family proteins in cancer apoptosis: Therapeutic strategies and promising updates of natural bioactive compounds and small molecules. Phytother Res 2024; 38:2249-2275. [PMID: 38415799 DOI: 10.1002/ptr.8157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/04/2024] [Accepted: 01/29/2024] [Indexed: 02/29/2024]
Abstract
Cancer has a considerably higher fatality rate than other diseases globally and is one of the most lethal and profoundly disruptive ailments. The increasing incidence of cancer among humans is one of the greatest challenges in the field of healthcare. A significant factor in the initiation and progression of tumorigenesis is the dysregulation of physiological processes governing cell death, which results in the survival of cancerous cells. B-cell lymphoma 2 (Bcl-2) family members play important roles in several cancer-related processes. Drug research and development have identified various promising natural compounds that demonstrate potent anticancer effects by specifically targeting Bcl-2 family proteins and their associated signaling pathways. This comprehensive review highlights the substantial roles of Bcl-2 family proteins in regulating apoptosis, including the intricate signaling pathways governing the activity of these proteins, the impact of reactive oxygen species, and the crucial involvement of proteasome degradation and the stress response. Furthermore, this review discusses advances in the exploration and potential therapeutic applications of natural compounds and small molecules targeting Bcl-2 family proteins and thus provides substantial scientific information and therapeutic strategies for cancer management.
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Affiliation(s)
- Iksen
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
- Department of Pharmacy, Sekolah Tinggi Ilmu Kesehatan Senior Medan, Medan, Indonesia
| | - Wasita Witayateeraporn
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Besse Hardianti
- Laboratory of Pharmacology and Clinical Pharmacy, Faculty of Health Sciences, Almarisah Madani University, South Sulawesi, Indonesia
| | - Varisa Pongrakhananon
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
- Preclinical Toxicity and Efficacy Assessment of Medicines and Chemicals Research Unit, Chulalongkorn University, Bangkok, Thailand
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2
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Panja S, Truica MI, Yu CY, Saggurthi V, Craige MW, Whitehead K, Tuiche MV, Al-Saadi A, Vyas R, Ganesan S, Gohel S, Coffman F, Parrott JS, Quan S, Jha S, Kim I, Schaeffer E, Kothari V, Abdulkadir SA, Mitrofanova A. Mechanism-centric regulatory network identifies NME2 and MYC programs as markers of Enzalutamide resistance in CRPC. Nat Commun 2024; 15:352. [PMID: 38191557 PMCID: PMC10774320 DOI: 10.1038/s41467-024-44686-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 12/22/2023] [Indexed: 01/10/2024] Open
Abstract
Heterogeneous response to Enzalutamide, a second-generation androgen receptor signaling inhibitor, is a central problem in castration-resistant prostate cancer (CRPC) management. Genome-wide systems investigation of mechanisms that govern Enzalutamide resistance promise to elucidate markers of heterogeneous treatment response and salvage therapies for CRPC patients. Focusing on the de novo role of MYC as a marker of Enzalutamide resistance, here we reconstruct a CRPC-specific mechanism-centric regulatory network, connecting molecular pathways with their upstream transcriptional regulatory programs. Mining this network with signatures of Enzalutamide response identifies NME2 as an upstream regulatory partner of MYC in CRPC and demonstrates that NME2-MYC increased activities can predict patients at risk of resistance to Enzalutamide, independent of co-variates. Furthermore, our experimental investigations demonstrate that targeting MYC and its partner NME2 is beneficial in Enzalutamide-resistant conditions and could provide an effective strategy for patients at risk of Enzalutamide resistance and/or for patients who failed Enzalutamide treatment.
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Affiliation(s)
- Sukanya Panja
- Department of Health Informatics, Rutgers School of Health Professions, Newark, NJ, 07107, USA
| | - Mihai Ioan Truica
- Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Christina Y Yu
- Department of Health Informatics, Rutgers School of Health Professions, Newark, NJ, 07107, USA
| | - Vamshi Saggurthi
- Department of Health Informatics, Rutgers School of Health Professions, Newark, NJ, 07107, USA
| | - Michael W Craige
- Department of Health Informatics, Rutgers School of Health Professions, Newark, NJ, 07107, USA
| | - Katie Whitehead
- Department of Health Informatics, Rutgers School of Health Professions, Newark, NJ, 07107, USA
| | - Mayra V Tuiche
- Department of Health Informatics, Rutgers School of Health Professions, Newark, NJ, 07107, USA
- Rutgers Biomedical and Health Sciences, Rutgers School of Graduate Studies, Newark, NJ, 07039, USA
| | - Aymen Al-Saadi
- Department of Electrical and Computer Engineering, Rutgers School of Engineering, New Brunswick, NJ, 08854, USA
| | - Riddhi Vyas
- Department of Health Informatics, Rutgers School of Health Professions, Newark, NJ, 07107, USA
| | - Shridar Ganesan
- Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, 08901, USA
| | - Suril Gohel
- Department of Health Informatics, Rutgers School of Health Professions, Newark, NJ, 07107, USA
| | - Frederick Coffman
- Department of Health Informatics, Rutgers School of Health Professions, Newark, NJ, 07107, USA
| | - James S Parrott
- Department of Health Informatics, Rutgers School of Health Professions, Newark, NJ, 07107, USA
| | - Songhua Quan
- Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Shantenu Jha
- Department of Electrical and Computer Engineering, Rutgers School of Engineering, New Brunswick, NJ, 08854, USA
| | - Isaac Kim
- Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, 08901, USA
- Department of Urology, Yale School of Medicine, New Heaven, CT, 06510, USA
| | - Edward Schaeffer
- Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Vishal Kothari
- Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA.
| | - Sarki A Abdulkadir
- Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA.
- Robert H. Lurie Comprehensive Cancer Center, Chicago, IL, 60611, USA.
| | - Antonina Mitrofanova
- Department of Health Informatics, Rutgers School of Health Professions, Newark, NJ, 07107, USA.
- Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, 08901, USA.
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3
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Weng M, Deng Z, Huang S, Lin X, Xu N, Sun X, Wu W, Lu J, Wang D. Fraxetin inhibits proliferation and induces apoptosis of bladder cancer through the Akt pathway in vitro and in vivo. J Biochem Mol Toxicol 2024; 38:e23556. [PMID: 37867445 DOI: 10.1002/jbt.23556] [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: 05/18/2022] [Revised: 09/04/2023] [Accepted: 10/02/2023] [Indexed: 10/24/2023]
Abstract
Fraxetin, a natural compound extracted from the Chinese herb Cortex Fraxini, is reported to boast extensive antitumor properties in various cancers. However, whether fraxetin exhibited an anticancer effect on bladder cancer remains unknown. In this study, cell counting kit-8 was utilized to detect cell viability. Flow cytometry analysis was performed for cell apoptosis analysis. Western blot analysis and real-time PCR were used to ascertain gene expression analysis. A mouse bladder cancer xenograft model was established and subjected to fraxetin treatment. Fraxetin reduced the viability of bladder cancer cells, induced apoptosis in vitro, and inhibited the growth of bladder cancer in vivo. Fraxetin inhibited the Akt pathway in J82 cells. In conclusion, the growth inhibitory properties of fraxetin against bladder cancer may be mediated via an Akt inhibitory effect and cell apoptosis promotion.
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Affiliation(s)
- Mingfang Weng
- Department of Urology, 900TH Hospital of Joint Logistics Support Force, Fujian Medical University, Fuzhou, China
| | - Zhen Deng
- Department of Urology, 900TH Hospital of Joint Logistics Support Force, Fujian Medical University, Fuzhou, China
| | - Shuijing Huang
- Department of Neurosurgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Xiaowen Lin
- Department of Vascular Surgery, Fujian Provincial People's Hospital, Fuzhou, China
| | - Na Xu
- Department of Urology, 900TH Hospital of Joint Logistics Support Force, Fujian Medical University, Fuzhou, China
| | - Xinghui Sun
- Department of Urology, 900TH Hospital of Joint Logistics Support Force, Fujian Medical University, Fuzhou, China
| | - Weizhen Wu
- Department of Urology, 900TH Hospital of Joint Logistics Support Force, Fujian Medical University, Fuzhou, China
| | - Jun Lu
- Fujian Provincial Key Laboratory of Transplant Biology, Dongfang Hospital (900TH Hospital of Joint Logistics Support Force), Xiamen University, Fuzhou, China
| | - Dong Wang
- Department of Urology, 900TH Hospital of Joint Logistics Support Force, Fujian Medical University, Fuzhou, China
- Fujian Provincial Key Laboratory of Transplant Biology, Dongfang Hospital (900TH Hospital of Joint Logistics Support Force), Xiamen University, Fuzhou, China
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4
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Li Z, Ning K, Zhao D, Zhou Z, Zhao J, Long X, Yang Z, Chen D, Cai X, Hong L, Zhang L, Zhou F, Wang J, Li Y. Targeting the Metabolic Enzyme PGAM2 Overcomes Enzalutamide Resistance in Castration-Resistant Prostate Cancer by Inhibiting BCL2 Signaling. Cancer Res 2023; 83:3753-3766. [PMID: 37676279 DOI: 10.1158/0008-5472.can-23-0308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 07/08/2023] [Accepted: 09/05/2023] [Indexed: 09/08/2023]
Abstract
The next-generation androgen receptor (AR) inhibitor enzalutamide is the mainstay treatment for metastatic prostate cancer. Unfortunately, resistance occurs rapidly in most patients, and once resistance occurs, treatment options are limited. Therefore, there is an urgent need to identify effective targets to overcome enzalutamide resistance. Here, using a genome-wide CRISPR-Cas9 library screen, we found that targeting a glycolytic enzyme, phosphoglycerate mutase PGAM2, significantly enhanced the sensitivity of enzalutamide-resistant prostate cancer cells to enzalutamide both in vivo and in vitro. Inhibition of PGAM2 together with enzalutamide treatment triggered apoptosis by decreasing levels of the antiapoptotic protein BCL-xL and increasing activity of the proapoptotic protein BAD. Mechanistically, PGAM2 bound to 14-3-3ζ and promoted its interaction with phosphorylated BAD, resulting in activation of BCL-xL and subsequent resistance to enzalutamide-induced apoptosis. In addition, high PGAM2 expression, which is transcriptionally regulated by AR, was associated with shorter survival and rapid development of enzalutamide resistance in patients with prostate cancer. Together, these findings provide evidence of a nonmetabolic function of PGAM2 in promoting enzalutamide resistance and identify PGAM2 inhibition as a promising therapeutic strategy for enzalutamide-resistant prostate cancer. SIGNIFICANCE PGAM2 promotes resistance to enzalutamide by activating antiapoptotic BCL-xL and suppressing apoptosis, indicating that PGAM2 is a potential target for overcoming enzalutamide resistance in prostate cancer.
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Affiliation(s)
- Zhen Li
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
- Department of Urology, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China
| | - Kang Ning
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Diwei Zhao
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Zhaohui Zhou
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Junliang Zhao
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Xingbo Long
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Zhenyu Yang
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Dong Chen
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - XinYang Cai
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Lexuan Hong
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Luyao Zhang
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Fangjian Zhou
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Jun Wang
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Yonghong Li
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
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5
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Sanchez-Hernandez ES, Ochoa PT, Suzuki T, Ortiz-Hernandez GL, Unternaehrer JJ, Alkashgari HR, Diaz Osterman CJ, Martinez SR, Chen Z, Kremsky I, Wang C, Casiano CA. Glucocorticoid Receptor Regulates and Interacts with LEDGF/p75 to Promote Docetaxel Resistance in Prostate Cancer Cells. Cells 2023; 12:2046. [PMID: 37626856 PMCID: PMC10453226 DOI: 10.3390/cells12162046] [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: 06/23/2023] [Revised: 07/31/2023] [Accepted: 08/05/2023] [Indexed: 08/27/2023] Open
Abstract
Patients with advanced prostate cancer (PCa) invariably develop resistance to anti-androgen therapy and taxane-based chemotherapy. Glucocorticoid receptor (GR) has been implicated in PCa therapy resistance; however, the mechanisms underlying GR-mediated chemoresistance remain unclear. Lens epithelium-derived growth factor p75 (LEDGF/p75, also known as PSIP1 and DFS70) is a glucocorticoid-induced transcription co-activator implicated in cancer chemoresistance. We investigated the contribution of the GR-LEDGF/p75 axis to docetaxel (DTX)-resistance in PCa cells. GR silencing in DTX-sensitive and -resistant PCa cells decreased LEDGF/p75 expression, and GR upregulation in enzalutamide-resistant cells correlated with increased LEDGF/p75 expression. ChIP-sequencing revealed GR binding sites in the LEDGF/p75 promoter. STRING protein-protein interaction analysis indicated that GR and LEDGF/p75 belong to the same transcriptional network, and immunochemical studies demonstrated their co-immunoprecipitation and co-localization in DTX-resistant cells. The GR modulators exicorilant and relacorilant increased the sensitivity of chemoresistant PCa cells to DTX-induced cell death, and this effect was more pronounced upon LEDGF/p75 silencing. RNA-sequencing of DTX-resistant cells with GR or LEDGF/p75 knockdown revealed a transcriptomic overlap targeting signaling pathways associated with cell survival and proliferation, cancer, and therapy resistance. These studies implicate the GR-LEDGF/p75 axis in PCa therapy resistance and provide a pre-clinical rationale for developing novel therapeutic strategies for advanced PCa.
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Affiliation(s)
- Evelyn S. Sanchez-Hernandez
- Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (E.S.S.-H.); (T.S.); (G.L.O.-H.); (J.J.U.); (H.R.A.)
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
| | - Pedro T. Ochoa
- Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (E.S.S.-H.); (T.S.); (G.L.O.-H.); (J.J.U.); (H.R.A.)
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
| | - Tise Suzuki
- Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (E.S.S.-H.); (T.S.); (G.L.O.-H.); (J.J.U.); (H.R.A.)
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
| | - Greisha L. Ortiz-Hernandez
- Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (E.S.S.-H.); (T.S.); (G.L.O.-H.); (J.J.U.); (H.R.A.)
| | - Juli J. Unternaehrer
- Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (E.S.S.-H.); (T.S.); (G.L.O.-H.); (J.J.U.); (H.R.A.)
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
| | - Hossam R. Alkashgari
- Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (E.S.S.-H.); (T.S.); (G.L.O.-H.); (J.J.U.); (H.R.A.)
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
- Department of Physiology, College of Medicine, University of Jeddah, Jeddah 23890, Saudi Arabia
| | - Carlos J. Diaz Osterman
- Department of Basic Sciences, Ponce Health Sciences University, Ponce, PR 00716, USA; (C.J.D.O.); (S.R.M.)
| | - Shannalee R. Martinez
- Department of Basic Sciences, Ponce Health Sciences University, Ponce, PR 00716, USA; (C.J.D.O.); (S.R.M.)
| | - Zhong Chen
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
- Center for Genomics, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA
| | - Isaac Kremsky
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
- Center for Genomics, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA
| | - Charles Wang
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
- Center for Genomics, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA
| | - Carlos A. Casiano
- Center for Health Disparities and Molecular Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (E.S.S.-H.); (T.S.); (G.L.O.-H.); (J.J.U.); (H.R.A.)
- Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA; (Z.C.); (I.K.); (C.W.)
- Rheumatology Division, Department of Medicine, Loma Linda University School of Medicine, Loma Linda, CA 92350, USA
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6
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Xu W, Liu L, Cui Z, Li M, Ni J, Huang N, Zhang Y, Luo J, Sun L, Sun F. Identification of key enzalutamide-resistance-related genes in castration-resistant prostate cancer and verification of RAD51 functions. Open Med (Wars) 2023; 18:20230715. [PMID: 37251536 PMCID: PMC10224628 DOI: 10.1515/med-2023-0715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 03/16/2023] [Accepted: 04/17/2023] [Indexed: 05/31/2023] Open
Abstract
Patients with castration-resistant prostate cancer (CRPC) often develop drug resistance after treatment with enzalutamide. The goal of our study was to identify the key genes related to enzalutamide resistance in CRPC and to provide new gene targets for future research on improving the efficacy of enzalutamide. Differential expression genes (DEGs) associated with enzalutamide were obtained from the GSE151083 and GSE150807 datasets. We used R software, the DAVID database, protein-protein interaction networks, the Cytoscape program, and Gene Set Cancer Analysis for data analysis. The effect of RAD51 knockdown on prostate cancer (PCa) cell lines was demonstrated using Cell Counting Kit-8, clone formation, and transwell migration experiments. Six hub genes with prognostic values were screened (RAD51, BLM, DTL, RFC2, APOE, and EXO1), which were significantly associated with immune cell infiltration in PCa. High RAD51, BLM, EXO1, and RFC2 expression was associated with androgen receptor signaling pathway activation. Except for APOE, high expression of hub genes showed a significant negative correlation with the IC50 of Navitoclax and NPK76-II-72-1. RAD51 knockdown inhibited the proliferation and migration of PC3 and DU145 cell lines and promoted apoptosis. Additionally, 22Rv1 cell proliferation was more significantly inhibited with RAD51 knockdown than without RAD51 knockdown under enzalutamide treatment. Overall, six key genes associated with enzalutamide resistance were screened (RAD51, BLM, DTL, RFC2, APOE, and EXO1), which are potential therapeutic targets for enzalutamide-resistant PCa in the future.
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Affiliation(s)
- Wen Xu
- Shanghai Clinical College, Anhui Medical University, Shanghai, 200072, China
- The Fifth School of Clinical Medicine, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Li Liu
- Department of Clinical Laboratory Medicine, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, 200127, China
| | - Zhongqi Cui
- Department of Clinical Laboratory, Shanghai Tenth People’s Hospital of Tongji University, 200072, Shanghai, China
| | - Mingyang Li
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Jinliang Ni
- Shanghai Clinical College, Anhui Medical University, Shanghai, 200072, China
- The Fifth School of Clinical Medicine, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Nan Huang
- Department of Clinical Laboratory, Shanghai Tenth People’s Hospital of Tongji University, 200072, Shanghai, China
| | - Yue Zhang
- Department of Clinical Laboratory, Shanghai Tenth People’s Hospital of Tongji University, 200072, Shanghai, China
| | - Jie Luo
- Department of Clinical Laboratory, Shanghai Tenth People’s Hospital of Tongji University, 200072, Shanghai, China
| | - Limei Sun
- Department of Clinical Laboratory, Shanghai Tenth People’s Hospital of Tongji University, 200072, Shanghai, China
| | - Fenyong Sun
- The Fifth School of Clinical Medicine, Anhui Medical University, Hefei, 230032, Anhui, China
- Shanghai Clinical College, Anhui Medical University, No. 301, Yanchang Middle Road, Jingan District, Shanghai, 200072, China
- Department of Clinical Laboratory, Shanghai Tenth People’s Hospital of Tongji University, No. 301, Yanchang Middle Road, Jingan District, 200072, Shanghai, China
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7
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AKT1 regulates UHRF1 protein stability and promotes the resistance to abiraterone in prostate cancer. Oncogenesis 2023; 12:1. [PMID: 36593255 PMCID: PMC9807647 DOI: 10.1038/s41389-022-00446-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/16/2022] [Accepted: 12/21/2022] [Indexed: 01/03/2023] Open
Abstract
Oncogenic activation of PI3K/AKT signaling pathway, together with epigenetic aberrations are the characters of castration-resistant prostate cancer (CRPC). UHRF1 as a key epigenetic regulator, plays a critical role in prostate cancer (PCa) development, and its expression is positively correlated with the degree of malignancy. In this present study we investigated the potential regulatory mechanism of AKT1 on UHRF1, and further validated the in vitro and in vivo anticancer efficacy of AKT phosphorylation inhibitor MK2206 in combination with abiraterone. Both UHRF1 and p-AKT aberrantly overexpressed in the abiraterone-resistant PCa cells. Further studies revealed that AKT1 protein interacts with UHRF1, and AKT1 directly phosphorylates UHRF1 via the site Thr-210. MK2206 induced UHRF1 protein degradation by inhibiting AKT1-induced UHRF1 phosphorylation, and then reduced the interaction between UHRF1 and deubiquitinase USP7, while promoted the interaction between UHRF1 and E3 ubiquitin protein ligase BTRC. MK2206 significantly promoted the sensitivity of abiraterone-refractory PCa cells and xenografts to abiraterone by decreasing UHRF1 protein level, and reversed the phenotype of NEPC, evently induced cellular senescence and cell apoptosis. Altogether, our present study for the first time revealed a novel molecular mechanism of abiraterone resistance through PI3K/AKT-UHRF1 pathway, and provided a novel therapeutic modality by targeting PI3K/AKT1 to promote the drug sensitivity of abiraterone in PCa patients.
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8
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Barysevich MV, Laktsevich-Iskryk MV, Scherbakov AM, Salnikova DI, Andreeva OE, Sorokin DV, Shchegolev YY, Hurski AL, Zhabinskii VN, Khripach VA. Synthesis and biological activity of 21,22-cyclosteroids and their derivatives. Steroids 2022; 188:109135. [PMID: 36336105 DOI: 10.1016/j.steroids.2022.109135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 10/19/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022]
Abstract
Synthesis of 21,22-cyclosteroids has been achieved starting from pregnenolone acetate. The key transformation was the Kulinkovich reaction of 17-vinyl steroids with esters. The resulting cyclopropanols were further subjected to three-membered ring-opening under various conditions including to base-, palladium or visible light-promoted isomerization and cross-coupling reaction. A number of steroidal Δ2-6-ketones and 3β-hydroxy-Δ5-enes with functional groups at C-21 - C-23 have been synthesized via the 21,22-cyclosteroids. The antiproliferative and antihormonal activity of the obtained compounds on the cell lines of prostate (22Rv1) and breast (MCF-7) cancer was studied. The androgen receptor activity was assessed by reporter assay when the expression of signalling proteins was evaluated by immunoblotting. (20S,22R)-22-Acetoxy-21,22-cyclo-5α-cholest-5-ene with the moderate antiandrogenic potency revealed IC50 values of 18.4 ± 1.2 and 14.6 ± 1.4 µM against MCF-7 and 22Rv1 cells, respectively, and its effects on the expression of AR-V7, cyclin D1 and BCL2 were explored.
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Affiliation(s)
- Maryia V Barysevich
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich st, 5/2, 220141 Minsk, Belarus
| | - Marharyta V Laktsevich-Iskryk
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich st, 5/2, 220141 Minsk, Belarus
| | - Alexander M Scherbakov
- Department of Experimental Tumor Biology, Blokhin N.N. National Medical Research Center of Oncology, Ministry of Health of Russia, Kashirskoe shosse, 24, 115522 Moscow, Russia
| | - Diana I Salnikova
- Department of Experimental Tumor Biology, Blokhin N.N. National Medical Research Center of Oncology, Ministry of Health of Russia, Kashirskoe shosse, 24, 115522 Moscow, Russia
| | - Olga E Andreeva
- Department of Experimental Tumor Biology, Blokhin N.N. National Medical Research Center of Oncology, Ministry of Health of Russia, Kashirskoe shosse, 24, 115522 Moscow, Russia
| | - Danila V Sorokin
- Department of Experimental Tumor Biology, Blokhin N.N. National Medical Research Center of Oncology, Ministry of Health of Russia, Kashirskoe shosse, 24, 115522 Moscow, Russia
| | - Yuri Y Shchegolev
- Department of Experimental Tumor Biology, Blokhin N.N. National Medical Research Center of Oncology, Ministry of Health of Russia, Kashirskoe shosse, 24, 115522 Moscow, Russia
| | - Alaksiej L Hurski
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich st, 5/2, 220141 Minsk, Belarus
| | - Vladimir N Zhabinskii
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich st, 5/2, 220141 Minsk, Belarus.
| | - Vladimir A Khripach
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich st, 5/2, 220141 Minsk, Belarus
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9
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Brownfield DG, de Arce AD, Ghelfi E, Gillich A, Desai TJ, Krasnow MA. Alveolar cell fate selection and lifelong maintenance of AT2 cells by FGF signaling. Nat Commun 2022; 13:7137. [PMID: 36414616 PMCID: PMC9681748 DOI: 10.1038/s41467-022-34059-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 10/12/2022] [Indexed: 11/24/2022] Open
Abstract
The lung's gas exchange surface is comprised of alveolar AT1 and AT2 cells that are corrupted in several common and deadly diseases. They arise from a bipotent progenitor whose differentiation is thought to be dictated by differential mechanical forces. Here we show the critical determinant is FGF signaling. Fgfr2 is expressed in the developing progenitors in mouse then restricts to nascent AT2 cells and remains on throughout life. Its ligands are expressed in surrounding mesenchyme and can, in the absence of exogenous mechanical cues, induce progenitors to form alveolospheres with intermingled AT2 and AT1 cells. FGF signaling directly and cell autonomously specifies AT2 fate; progenitors lacking Fgfr2 in vitro and in vivo exclusively acquire AT1 fate. Fgfr2 loss in AT2 cells perinatally results in reprogramming to AT1 identity, whereas loss or inhibition later in life triggers AT2 apoptosis and compensatory regeneration. We propose that Fgfr2 signaling selects AT2 fate during development, induces a cell non-autonomous AT1 differentiation signal, then continuously maintains AT2 identity and survival throughout life.
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Affiliation(s)
- Douglas G. Brownfield
- grid.168010.e0000000419368956Department of Biochemistry and Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305-5307 USA ,grid.38142.3c000000041936754XMolecular and Integrative Physiological Sciences Program, Harvard T.H. Chan School of Public Health, Boston, MA USA ,grid.66875.3a0000 0004 0459 167XPresent Address: Division of Pulmonary and Critical Care Medicine, Departments of Physiology and Biomedical Engineering and of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine and Science, Rochester, MN 55905 USA
| | - Alex Diaz de Arce
- grid.168010.e0000000419368956Department of Biochemistry and Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305-5307 USA
| | - Elisa Ghelfi
- grid.38142.3c000000041936754XMolecular and Integrative Physiological Sciences Program, Harvard T.H. Chan School of Public Health, Boston, MA USA
| | - Astrid Gillich
- grid.168010.e0000000419368956Department of Biochemistry and Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305-5307 USA
| | - Tushar J. Desai
- grid.168010.e0000000419368956Department of Internal Medicine and Stem Cell Institute, Stanford University School of Medicine, Stanford, CA 94305 USA
| | - Mark A. Krasnow
- grid.168010.e0000000419368956Department of Biochemistry and Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305-5307 USA
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10
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Irshad R, Raj N, Gabr GA, Manzoor N, Husain M. Integrated network pharmacology and experimental analysis unveil multi-targeted effect of 18α- glycyrrhetinic acid against non-small cell lung cancer. Front Pharmacol 2022; 13:1018974. [PMID: 36313358 PMCID: PMC9596789 DOI: 10.3389/fphar.2022.1018974] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 09/28/2022] [Indexed: 11/21/2022] Open
Abstract
Non-small cell lung cancer (NSCLC) is one of the most malignant types of cancer with soaring incidence rates worldwide, attributed to its heterogeneity and complex etiology. Evidently, alternative anti-cancer therapies comprising traditional medicines and natural products have gained attention for their ability to act as chemopreventive agents with minimal toxicities, either alone or in combination. Accumulating studies have substantiated the inevitability of network pharmacology studies for effectively mapping molecular targets of natural products against multifaceted diseases, including cancer. The 18α-Glycyrrhetinic acid (18α-GA), a triterpenoid found in licorice plants, has shown promising medicinal properties, although, its mechanism of action against NSCLC yet remains elusive. The present study was conducted to explore the anti- NSCLC potential of 18α-GA, employing integrative network pharmacology, molecular docking, and experimental research. Initially, network analysis revealed 181 common targets of 18α-GA in NSCLC as shown in the “compound-target- disease” network employing Cytoscape 3.8.2. Further analyses identified EGFR, AKT1, PI3KR1, MAPK1, IGF1, and SRC as the most crucial hub targets of 18α-GA against NSCLC. Moreover, molecular docking simulations and functional enrichment analyses indicated the involvement of multiple signaling pathways in suppressing NSCLC. Subsequent in-vitro studies verified the antiproliferative effect of 18α-GA on two NSCLC cancer cell lines, H1299 and A549. Mechanistically, 18α-GA arrested cell cycle at the G1 phase, induced apoptosis, decreased migratory potential, and protein expression levels of EGFR-PI3K/AKT, as examined by flow cytometry, morphological assessment, RT-PCR, and western blot. In conclusion, this study delineates the therapeutic potential and underlying mechanism(s) of 18α-GA as a putative novel drug against NSCLC. However, further studies are warranted to elucidate the complete molecular mechanism(s) using animal models of NSCLC.
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Affiliation(s)
- Rasha Irshad
- Virology and Oncology Lab, Department of Biotechnology, Jamia Millia Islamia, New Delhi, India
| | - Nafis Raj
- Medical Mycology Lab, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Gamal A. Gabr
- Department of Pharmacology and Toxicology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al- Kharj, Saudi Arabia
| | - Nikhat Manzoor
- Medical Mycology Lab, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Mohammad Husain
- Virology and Oncology Lab, Department of Biotechnology, Jamia Millia Islamia, New Delhi, India
- *Correspondence: Mohammad Husain,
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11
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Enzalutamide Induces Apoptotic Insults to Human Drug-Resistant and -Sensitive Glioblastoma Cells via an Intrinsic Bax-Mitochondrion-Cytochrome C Caspase Cascade Activation Pathway. Molecules 2022; 27:molecules27196666. [PMID: 36235203 PMCID: PMC9572438 DOI: 10.3390/molecules27196666] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/30/2022] [Accepted: 10/04/2022] [Indexed: 11/07/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most common and malignant brain tumor. Temozolomide (TMZ) is the first-line chemotherapeutic drug for treating GBM. However, drug resistance is still a challenging issue in GBM therapy. Our preliminary results showed upregulation of androgen receptor (AR) gene expression in human GBM tissues. This study was designed to evaluate the effects of enzalutamide, a specific inhibitor of the AR, on killing drug-resistant and -sensitive glioblastoma cells and the possible mechanisms. Data mining from The Cancer Genome Atlas (TCGA) database revealed upregulation of AR messenger (m)RNA and protein expressions in human GBM tissues, especially in male patients, compared to normal human brains. In addition, expressions of AR mRNA and protein in human TMZ-sensitive U87 MG and -resistant U87 MG-R glioblastoma cells were elevated compared to normal human astrocytes. Exposure of human U87 MG and U87 MG-R cells to enzalutamide concentration- and time-dependently decreased cell viability. As to the mechanism, enzalutamide killed these two types of glioblastoma cells via an apoptotic mechanism. Specifically, exposure to enzalutamide augmented enzyme activities of caspase-9 rather than those of caspase-8. Moreover, enzalutamide successively triggered an elevation in levels of the proapoptotic Bax protein, a reduction in the mitochondrial membrane potential, release of cytochrome c, cascade activation of caspases-3 and -6, DNA fragmentation, and cell apoptosis in human TMZ-sensitive and -resistant glioblastoma cells. Pretreatment with Z-VEID-FMK, an inhibitor of caspase-6, caused significant attenuations in enzalutamide-induced morphological shrinkage, DNA damage, and apoptotic death. Taken together, this study showed that enzalutamide could significantly induce apoptotic insults to human drug-resistant and -sensitive glioblastoma cells via an intrinsic Bax-mitochondrion-cytochrome c-caspase cascade activation pathway. Enzalutamide has the potential to be a drug candidate for treating GBM by targeting the AR signaling axis.
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12
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Thomas E, Thankan RS, Purushottamachar P, Huang W, Kane MA, Zhang Y, Ambulos NP, Weber DJ, Njar VCO. Novel AR/AR-V7 and Mnk1/2 Degrader, VNPP433-3β: Molecular Mechanisms of Action and Efficacy in AR-Overexpressing Castration Resistant Prostate Cancer In Vitro and In Vivo Models. Cells 2022; 11:2699. [PMID: 36078112 PMCID: PMC9454942 DOI: 10.3390/cells11172699] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/20/2022] [Accepted: 08/27/2022] [Indexed: 11/29/2022] Open
Abstract
Prostate cancer (PCa) relies in part on AR-signaling for disease development and progression. Earlier, we developed drug candidate galeterone, which advanced through phase 2-clinical trials in treating castration-resistant PCa (CRPC). Subsequently, we designed, synthesized, and evaluated next-generation galeterone-analogs including VNPP433-3β which is potently efficacious against pre-clinical models of PCa. This study describes the mechanism of action of VNPP433-3β that promotes degradation of full-length AR (fAR) and its splice variant AR-V7 besides depleting MNK1/2 in in vitro and in vivo CRPC models that stably overexpresses fAR. VNPP433-3β directly engages AR within the cell and promotes proteasomal degradation of fAR and its splice variant AR-V7 by enhancing the interaction of AR with E3 ligases MDM2/CHIP but disrupting AR-HSP90 binding. Next, VNPP433-3β decreases phosphorylation of 4EBP1 and abates binding of eIF4E and eIF4G to 5' cap of mRNA by depleting MNK1/2 with consequent depletion of phosphorylated eIF4E. Finally, RNA-seq demonstrates modulation of multiple pathways that synergistically contribute to PCa inhibition. Therefore, VNPP433-3β exerts its antitumor effect by imposing 1) transcriptional regulation of AR and AR-responsive oncogenes 2) translational regulation by disrupting mRNA-5'cap-dependent translation initiation, 3) reducing AR half-life through enhanced proteasomal degradation in vitro and AR-overexpressing tumor xenografts in vivo.
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Affiliation(s)
- Elizabeth Thomas
- Department of Pharmacology, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA
- The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA
| | - Retheesh S. Thankan
- Department of Pharmacology, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA
- Flavocure Biotech, 701 E. Pratt St, Ste 2033, Baltimore, MD 21202, USA
- Isoprene Pharmaceuticals, Inc., 801 W Baltimore Street, Suite 502J, Baltimore, MD 21201, USA
| | - Puranik Purushottamachar
- Department of Pharmacology, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA
- The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA
| | - Weiliang Huang
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, MD 21201, USA
| | - Maureen A. Kane
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, MD 21201, USA
| | - Yuji Zhang
- Division of Biostatistics and Bioinformatics, University of Maryland, Marlene and Stewart Greenebaum Comprehensive Cancer Center, Baltimore, MD 21201, USA
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Nicholas P. Ambulos
- Department of Microbiology and Immunology, University of Maryland, Marlene Stewart Greenebaum Comprehensive Cancer Center, Baltimore, MD 21201, USA
| | - David J. Weber
- The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Vincent C. O. Njar
- Department of Pharmacology, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA
- The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA
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13
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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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14
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Wang K, Huang D, Zhou P, Su X, Yang R, Shao C, Wu J. Bisphenol A exposure triggers the malignant transformation of prostatic hyperplasia in beagle dogs via cfa-miR-204/KRAS axis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 235:113430. [PMID: 35325610 DOI: 10.1016/j.ecoenv.2022.113430] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 03/02/2022] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
The prostatic toxicity of bisphenol A (BPA) exposure is mainly associated with hormonal disturbances, thus interfering with multiple signal pathways and increasing the susceptibility to prostatic lesions. This study concentrates predominantly on the potential effect and mechanisms of low-dose BPA exposure on prostates in adult beagle dogs. The dogs were orally given BPA (2, 6, 18 μg/kg/day) and vehicle for 8 weeks, followed by blood collection and dissection. The ascended organ coefficient and volume of prostates, thickened epithelium, as well as histopathological observation have manifested that BPA exposure could trigger the aberrant prostatic hyperplasia in beagle dogs. Hormone level detection revealed that the ratios of estradiol (E2) to testosterone (T) (E2/T) and prolactin (PRL) to T (PRL/T) were up-regulated in the serum from BPA group. Based on microRNA (miRNA) microarray screening and functional enrichment analysis, BPA might facilitate the progression of prostate tumorigenesis in beagle dogs via cfa-miR-204 and its downstream target KRAS oncogene. Subsequently, the overexpression of KRAS, CDKN1A, MAPK1, VEGFA, BCL2 and PTGS2 was validated. These findings provide a series of underlying targets for preventing the initiation and metastasis of BPA-induced prostatic hyperplasia and tumorigenesis, while the regulatory relationship headed with KRAS requires further investigation.
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Affiliation(s)
- Kaiyue Wang
- NHC Key Lab of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies), Pharmacy School of Fudan University, Shanghai 200032, China; Department of Pharmacology & Toxicology, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Shanghai 200032, China
| | - Dongyan Huang
- NHC Key Lab of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies), Pharmacy School of Fudan University, Shanghai 200032, China; Department of Pharmacology & Toxicology, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Shanghai 200032, China
| | - Ping Zhou
- NHC Key Lab of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies), Pharmacy School of Fudan University, Shanghai 200032, China; Department of Pharmacology & Toxicology, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Shanghai 200032, China
| | - Xin Su
- NHC Key Lab of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies), Pharmacy School of Fudan University, Shanghai 200032, China; Department of Pharmacology & Toxicology, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Shanghai 200032, China
| | - Rongfu Yang
- NHC Key Lab of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies), Pharmacy School of Fudan University, Shanghai 200032, China; Department of Pharmacology & Toxicology, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Shanghai 200032, China
| | - Congcong Shao
- NHC Key Lab of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies), Pharmacy School of Fudan University, Shanghai 200032, China; Department of Pharmacology & Toxicology, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Shanghai 200032, China
| | - Jianhui Wu
- NHC Key Lab of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies), Pharmacy School of Fudan University, Shanghai 200032, China; Department of Pharmacology & Toxicology, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Shanghai 200032, China.
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15
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Targeting the Intrinsic Apoptosis Pathway: A Window of Opportunity for Prostate Cancer. Cancers (Basel) 2021; 14:cancers14010051. [PMID: 35008216 PMCID: PMC8750516 DOI: 10.3390/cancers14010051] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/12/2021] [Accepted: 12/15/2021] [Indexed: 12/15/2022] Open
Abstract
Simple Summary Prostate cancer treatment has improved over the last 20 years; despite this, approximately 33,000 men died from the disease in the United States in 2020. In view of this, new treatment options are urgently needed for advanced prostate cancer. Eradicating cancer cells by triggering apoptosis (a form of cell death) is an attractive strategy, and a novel class of drugs, called BH3 mimetics, have been designed to do this. They have been shown to work for blood cancers and may also have a role in solid cancers. Herein, we discuss cell death, focusing on the intrinsic apoptosis pathway, and consider how BH3 mimetics may be used to help treat prostate cancer. Abstract Despite major improvements in the management of advanced prostate cancer over the last 20 years, the disease remains invariably fatal, and new effective therapies are required. The development of novel hormonal agents and taxane chemotherapy has improved outcomes, although primary and acquired resistance remains problematic. Inducing cancer cell death via apoptosis has long been an attractive goal in the treatment of cancer. Apoptosis, a form of regulated cell death, is a highly controlled process, split into two main pathways (intrinsic and extrinsic), and is stimulated by a multitude of factors, including cellular and genotoxic stress. Numerous therapeutic strategies targeting the intrinsic apoptosis pathway are in clinical development, and BH3 mimetics have shown promising efficacy for hematological malignancies. Utilizing these agents for solid malignancies has proved more challenging, though efforts are ongoing. Molecular characterization and the development of predictive biomarkers is likely to be critical for patient selection, by identifying tumors with a vulnerability in the intrinsic apoptosis pathway. This review provides an up-to-date overview of cell death and apoptosis, specifically focusing on the intrinsic pathway. It summarizes the latest approaches for targeting the intrinsic apoptosis pathway with BH3 mimetics and discusses how these strategies may be leveraged to treat prostate cancer.
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16
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Patel RS, Rupani R, Impreso S, Lui A, Patel NA. Role of alternatively spliced, pro‐survival Protein Kinase C delta VIII (PKCδVIII) in ovarian cancer. FASEB Bioadv 2021; 4:235-253. [PMID: 35415459 PMCID: PMC8984081 DOI: 10.1096/fba.2021-00090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 10/26/2021] [Accepted: 11/05/2021] [Indexed: 01/05/2023] Open
Abstract
Ovarian cancer is the deadliest malignant disease in women. Protein Kinase C delta (PRKCD; PKCδ) is serine/threonine kinase extensively linked to various cancers. In humans, PKCδ is alternatively spliced to PKCδI and PKCδVIII. However, the specific function of PKCδ splice variants in ovarian cancer has not been elucidated yet. Hence, we evaluated their expression in human ovarian cancer cell lines (OCC): SKOV3 and TOV112D, along with the normal T80 ovarian cells. Our results demonstrate a marked increase in PKCδVIII in OCC compared to normal ovarian cells. Therefore, we elucidated the role of PKCδVIII and the underlying mechanism of its expression in OCC. Using overexpression and knockdown studies, we demonstrate that PKCδVIII increases cellular survival and migration in OCC. Further, overexpression of PKCδVIII in T80 cells resulted in increased expression of Bcl2 and knockdown of PKCδVIII in OCC decreased Bcl2 expression. Using co‐immunoprecipitations and immunocytochemistry, we demonstrate nuclear localization of PKCδVIII in OCC and further show increased association of PKCδVIII with Bcl2 and Bcl‐xL in OCC. Using PKCδ splicing minigene, mutagenesis, siRNA and antisense oligonucleotides, we demonstrate that increased levels of alternatively spliced PKCδVIII in OCC is regulated by splice factor SRSF2. Finally, we verified that PKCδVIII levels are elevated in samples of human ovarian cancer tissue. The data presented here demonstrate that the alternatively spliced, signaling kinase PKCδVIII is a viable target to develop therapeutics to combat progression of ovarian cancer.
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Affiliation(s)
| | - Rea Rupani
- Department of Molecular Medicine University of South Florida Tampa Florida USA
| | | | - Ashley Lui
- Department of Molecular Medicine University of South Florida Tampa Florida USA
| | - Niketa A. Patel
- James A. Haley Veterans Hospital Tampa Florida USA
- Department of Molecular Medicine University of South Florida Tampa Florida USA
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17
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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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18
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Pungsrinont T, Kallenbach J, Baniahmad A. Role of PI3K-AKT-mTOR Pathway as a Pro-Survival Signaling and Resistance-Mediating Mechanism to Therapy of Prostate Cancer. Int J Mol Sci 2021; 22:11088. [PMID: 34681745 PMCID: PMC8538152 DOI: 10.3390/ijms222011088] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/27/2021] [Accepted: 10/11/2021] [Indexed: 12/12/2022] Open
Abstract
Androgen deprivation therapy (ADT) and androgen receptor (AR)-targeted therapy are the gold standard options for treating prostate cancer (PCa). These are initially effective, as localized and the early stage of metastatic disease are androgen- and castration-sensitive. The tumor strongly relies on systemic/circulating androgens for activating AR signaling to stimulate growth and progression. However, after a certain point, the tumor will eventually develop a resistant stage, where ADT and AR antagonists are no longer effective. Mechanistically, it seems that the tumor becomes more aggressive through adaptive responses, relies more on alternative activated pathways, and is less dependent on AR signaling. This includes hyperactivation of PI3K-AKT-mTOR pathway, which is a central signal that regulates cell pro-survival/anti-apoptotic pathways, thus, compensating the blockade of AR signaling. The PI3K-AKT-mTOR pathway is well-documented for its crosstalk between genomic and non-genomic AR signaling, as well as other signaling cascades. Such a reciprocal feedback loop makes it more complicated to target individual factor/signaling for treating PCa. Here, we highlight the role of PI3K-AKT-mTOR signaling as a resistance mechanism for PCa therapy and illustrate the transition of prostate tumor from AR signaling-dependent to PI3K-AKT-mTOR pathway-dependent. Moreover, therapeutic strategies with inhibitors targeting the PI3K-AKT-mTOR signal used in clinic and ongoing clinical trials are discussed.
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Affiliation(s)
| | | | - Aria Baniahmad
- Institute of Human Genetics, Jena University Hospital, 07747 Jena, Germany; (T.P.); (J.K.)
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19
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Evasion of cell death: A contributory factor in prostate cancer development and treatment resistance. Cancer Lett 2021; 520:213-221. [PMID: 34343635 DOI: 10.1016/j.canlet.2021.07.045] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 06/17/2021] [Accepted: 07/28/2021] [Indexed: 12/24/2022]
Abstract
Cell death is a natural process in organismal development, homeostasis and response to disease or infection that eliminates unnecessary or potentially dangerous cells and acts as an innate barrier to oncogenesis. Inactivation of cell death is a key step in tumour development and also impedes effective response to cancer therapy. Precise execution of unwanted cells is achieved through regulated cell death processes including the intrinsic apoptotic pathway that is governed by the BCL-2 (B-cell lymphoma 2) protein family. There is compelling evidence that intrinsic apoptosis is defective in prostate cancer, particularly in metastatic and castration resistant advanced disease, currently a lethal diagnosis. New therapeutics have been developed to target pro-survival BCL-2 proteins (including BCL-2, BCL-XL and MCL-1) and show promise in reinstating apoptosis to destroy tumour cells in haematological cancers. Here we discuss perturbation of cell death in prostate cancer and how new therapeutics could improve treatment outcome in prostate cancer.
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20
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Soliman L, De Souza A, Srinivasan P, Danish M, Bertone P, El-Deiry WS, Carneiro BA. The Role of BCL-2 Proteins in the Development of Castration-resistant Prostate Cancer and Emerging Therapeutic Strategies. Am J Clin Oncol 2021; 44:374-382. [PMID: 34014842 DOI: 10.1097/coc.0000000000000829] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The development of androgen resistance in advanced prostate cancer remains a challenging clinical problem. Because androgen deprivation therapy constitutes the backbone of first-line treatments for metastatic prostate cancer, the phenotypic switch from an androgen-dependent to an androgen-independent growth state limits the treatment options for these patients. This critical change from an androgen-dependent to an androgen-independent growth state can be regulated by the B-cell lymphoma gene 2 (BCL-2) family of apoptotic proteins. While the roles of BCL-2 protein family members in the carcinogenesis of prostate cancer have been well-studied, emerging data also delineates their modulation of disease progression to castration-resistant prostate cancer (CRPC). Over the past 2 decades, investigators have sought to describe the mechanisms that underpin this development at the molecular level, yet no recent literature has consolidated these findings in a dedicated review. As new classes of BCL-2 family inhibitors are finding indications for other cancer types, it is time to evaluate how such agents might find stable footing for the treatment of CRPC. Several trials to date have investigated BCL-2 inhibitors as therapeutic agents for CRPC. These therapies include selective BCL-2 inhibitors, pan-BCL-2 inhibitors, and novel inhibitors of MCL-1 and BCL-XL. This review details the research regarding the role of BCL-2 family members in the pathogenesis of prostate cancer and contextualizes these findings within the contemporary landscape of prostate cancer treatment.
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Affiliation(s)
- Luke Soliman
- Warren Alpert Medical School of Brown University
| | - Andre De Souza
- Warren Alpert Medical School of Brown University
- Division of Hematology/Oncology, Lifespan Cancer Institute
- Cancer Center at Brown University
| | | | - Matthew Danish
- Warren Alpert Medical School of Brown University
- Division of Hematology/Oncology, Lifespan Cancer Institute
| | - Paul Bertone
- Warren Alpert Medical School of Brown University
- Division of Hematology/Oncology, Lifespan Cancer Institute
- Cancer Center at Brown University
| | - Wafik S El-Deiry
- Warren Alpert Medical School of Brown University
- Division of Hematology/Oncology, Lifespan Cancer Institute
- Cancer Center at Brown University
- Department of Pathology and Laboratory Medicine, The Warren Alpert Medical School, Brown University, Providence, RI
| | - Benedito A Carneiro
- Warren Alpert Medical School of Brown University
- Division of Hematology/Oncology, Lifespan Cancer Institute
- Cancer Center at Brown University
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21
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Qin Z, Ou S, Xu L, Sorensen K, Zhang Y, Hu DP, Yang Z, Hu WY, Chen F, Prins GS. Design and synthesis of isothiocyanate-containing hybrid androgen receptor (AR) antagonist to downregulate AR and induce ferroptosis in GSH-Deficient prostate cancer cells. Chem Biol Drug Des 2021; 97:1059-1078. [PMID: 33470049 PMCID: PMC8168342 DOI: 10.1111/cbdd.13826] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 12/16/2020] [Accepted: 01/10/2021] [Indexed: 12/16/2022]
Abstract
Sustained androgen receptor (AR) signaling and apoptosis evasion are among the main hurdles of castration-resistant prostate cancer (CRPC) treatment. We designed and synthesized isothiocyanate (ITC)-containing hybrid AR antagonist (ITC-ARi) and rationally combined ITC-ARi with GSH synthesis inhibitor buthionine sulfoximine (BSO) to efficiently downregulate AR/AR splice variant and induce ferroptosis in CRPC cells. The representative ITC-ARi 13 is an AR ligand that contains an N-acetyl cysteine-masked ITC moiety and gradually releases parental unconjugated ITC 12b in aqueous solution. The in vitro anti-PCa activities of 13, such as growth inhibition and AR downregulation, are significantly enhanced when combined with BSO. The drug combination caused notable lipid peroxidation and the cell viability was effectively rescued by iron chelator, antioxidants or the inhibitor of heme oxygenase-1, supporting the induction of ferroptosis. 13 and BSO cooperatively downregulate AR and induce ferroptosis likely through increasing the accessibility of 13/12b to cellular targets, escalating free intracellular ferrous iron and attenuating GSH-centered cellular defense and adaptation. Further studies on the combination of ITC-ARi and GSH synthesis inhibitor could result in a new modality against CRPC.
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Affiliation(s)
- Zhihui Qin
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, USA
| | - Siyu Ou
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, USA
| | - Liping Xu
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, USA
| | - Kathleen Sorensen
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, USA
| | - Yingxue Zhang
- Department of Biochemistry, Microbiology and Immunology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Dan-Ping Hu
- Department of Urology, University of Illinois at Chicago, Chicago, IL, USA
| | - Zhe Yang
- Department of Biochemistry, Microbiology and Immunology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Wen-Yang Hu
- Department of Urology, University of Illinois at Chicago, Chicago, IL, USA
| | - Fei Chen
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, USA
| | - Gail S. Prins
- Department of Urology, University of Illinois at Chicago, Chicago, IL, USA
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22
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Puglisi M, Molife LR, de Jonge MJ, Khan KH, Doorn LV, Forster MD, Blanco M, Gutierrez M, Franklin C, Busman T, Yang J, Eskens FA. A Phase I study of the safety, pharmacokinetics and efficacy of navitoclax plus docetaxel in patients with advanced solid tumors. Future Oncol 2021; 17:2747-2758. [PMID: 33849298 DOI: 10.2217/fon-2021-0140] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Aim: This Phase I study investigated safety of navitoclax and docetaxel in patients (n = 41) with advanced solid tumors. Patients & methods: Two navitoclax plus docetaxel dosing schedules (21 and 28 days) were evaluated. Maximum tolerated dose, dose-limiting toxicities and preliminary antitumor activity were assessed. Results: Ten (24%) patients experienced dose-limiting toxicities; dose-escalation cohorts: n = 7 (21-day schedule: n = 5; 28-day schedule: n = 2) and 21-day expanded safety cohort: n = 3. Navitoclax 150-mg days 1-5 every 21 days with docetaxel 75 mg/m2 day 1 was the maximum tolerated dose and optimal schedule. Adverse events included thrombocytopenia (63%), fatigue (61%), nausea (59%) and neutropenia (51%). Four confirmed partial responses occurred. Conclusion: Navitoclax 150-mg orally once/day was safely administered with docetaxel. Myelosuppression limited dose escalation; antitumor activity was observed. Clinical trial registration: NCT00888108 (ClinicalTrials.gov).
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Affiliation(s)
- Martina Puglisi
- Drug Development Unit, Institute of Cancer Research/The Royal Marsden, Downs Road, Sutton, Surrey, SM2 5PT, UK
| | - L Rhoda Molife
- Drug Development Unit, Institute of Cancer Research/The Royal Marsden, Downs Road, Sutton, Surrey, SM2 5PT, UK
| | - Maja Ja de Jonge
- Department of Medical Oncology, Erasmus MC Cancer Institute, PO Box 2040, 3000 CA Rotterdam, The Netherlands
| | - Khurum H Khan
- UCL Cancer Institute, University College London Hospital, Gower Street, London, WC1E 6BT, UK
| | - Leni van Doorn
- Department of Medical Oncology, Erasmus MC Cancer Institute, PO Box 2040, 3000 CA Rotterdam, The Netherlands
| | - Martin D Forster
- UCL Cancer Institute, University College London Hospital, Gower Street, London, WC1E 6BT, UK
| | - Montserrat Blanco
- Drug Development Unit, Institute of Cancer Research/The Royal Marsden, Downs Road, Sutton, Surrey, SM2 5PT, UK
| | - Martin Gutierrez
- John Theurer Cancer Center, Hackensack University Medical Center, 92 2nd St, Hackensack, NJ 07601, USA
| | | | - Todd Busman
- AbbVie, Inc, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Jianning Yang
- AbbVie, Inc, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Ferry Alm Eskens
- Department of Medical Oncology, Erasmus MC Cancer Institute, PO Box 2040, 3000 CA Rotterdam, The Netherlands
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23
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Wang Y, Chen J, Wu Z, Ding W, Gao S, Gao Y, Xu C. Mechanisms of enzalutamide resistance in castration-resistant prostate cancer and therapeutic strategies to overcome it. Br J Pharmacol 2020; 178:239-261. [PMID: 33150960 DOI: 10.1111/bph.15300] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 10/18/2020] [Accepted: 10/22/2020] [Indexed: 12/11/2022] Open
Abstract
Prostate cancer is the second most common malignancy in men and androgen deprivation therapy is the first-line therapy. However, most cases will eventually develop castration-resistant prostate cancer after androgen deprivation therapy treatment. Enzalutamide is a second-generation androgen receptor antagonist approved by the Food and Drug Administration to treat patients with castration-resistant prostate cancer. Unfortunately, patients receiving enzalutamide treatment will ultimately develop resistance via various complicated mechanisms. This review examines the emerging information on these resistance mechanisms, including androgen receptor-related signalling pathways, glucocorticoid receptor-related pathways and metabolic effects. Notably, lineage plasticity and phenotype switching, gene polymorphisms and the relationship between microRNAs and drug resistance are addressed. Furthermore, potential therapeutic strategies for enzalutamide-resistant castration-resistant prostate cancer treatment are suggested, which can help discover more effective and specific regimens to overcome enzalutamide resistance.
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Affiliation(s)
- Yuanyuan Wang
- Department of Clinical Pharmacy and Pharmaceutical Management, School of Pharmacy, Fudan University, Shanghai, China
| | - Jiyuan Chen
- Department of Clinical Pharmacy and Pharmaceutical Management, School of Pharmacy, Fudan University, Shanghai, China
| | - Zhengjie Wu
- Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Weihong Ding
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Shen Gao
- Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yuan Gao
- Department of Clinical Pharmacy and Pharmaceutical Management, School of Pharmacy, Fudan University, Shanghai, China
| | - Chuanliang Xu
- Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China
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24
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Song IS, Jeong YJ, Kim J, Seo KH, Baek NI, Kim Y, Kim CS, Jang SW. Pharmacological inhibition of androgen receptor expression induces cell death in prostate cancer cells. Cell Mol Life Sci 2020; 77:4663-4673. [PMID: 31894360 PMCID: PMC11104930 DOI: 10.1007/s00018-019-03429-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 11/27/2019] [Accepted: 12/18/2019] [Indexed: 12/22/2022]
Abstract
The androgen receptor (AR) plays an important role in the pathogenesis and development of prostate cancer (PCa). Mostly, PCa progresses to androgen-independent PCa, which has activated AR signaling from androgen-dependent PCa. Thus, inhibition of AR signaling may be an important therapeutic target in androgen-dependent and castration-resistant PCa. In this study, we determined the anticancer effect of a newly found natural compound, sakurasosaponin (S-saponin), using androgen-dependent and castration-resistant PCa cell lines. S-saponin induces mitochondrial-mediated cell death in both androgen-dependent (LNCaP) and castration-resistant (22Rv1 and C4-2) PCa cells, via AR expression. S-saponin treatment induces a decrease in AR expression in a time- and dose-dependent manner and a potent decrease in the expression of its target genes, including prostate-specific antigen (PSA), transmembrane protease, serin 2 (TMPRSS2), and NK3 homeobox 1 (NKX3.1). Furthermore, S-saponin treatment decreases B-cell lymphoma-extra large (Bcl-xL) and mitochondrial membrane potential, thereby increasing the release of cytochrome c into the cytosol. Moreover, Bcl-xL inhibition and subsequent mitochondria-mediated cell death caused by S-saponin were reversed by Bcl-xL or AR overexpression. Interestingly, S-saponin-mediated cell death was significantly reduced by a reactive oxygen species (ROS) scavenger, N-acetylcystein. Animal xenograft experiments showed that S-saponin treatment significantly reduced tumor growth of AR-positive 22Rv1 xenografts but not AR-negative PC-3 xenografts. Taken together, for the first time, our results revealed that S-saponin induces mitochondrial-mediated cell death in androgen-dependent and castration-resistant cells through regulation of AR mechanisms, including downregulation of Bcl-xL expression and induction of ROS stress by decreasing mitochondrial membrane potential.
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Affiliation(s)
- In-Sung Song
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 138-736, Republic of Korea
| | - Yu Jeong Jeong
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 138-736, Republic of Korea
- Asan Medical Center, Asan Medical Institute of Convergence Science and Technology, University of Ulsan College of Medicine, Seoul, 138-736, Republic of Korea
| | - Jueun Kim
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 138-736, Republic of Korea
- Asan Medical Center, Asan Medical Institute of Convergence Science and Technology, University of Ulsan College of Medicine, Seoul, 138-736, Republic of Korea
| | - Kyoung-Hwa Seo
- Graduate School of Biotechnology, Kyung Hee University, Yongin, Gyeonggi, 446-701, Republic of Korea
| | - Nam-In Baek
- Graduate School of Biotechnology, Kyung Hee University, Yongin, Gyeonggi, 446-701, Republic of Korea
| | - Yunlim Kim
- Department of Urology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 138-736, Republic of Korea
| | - Choung-Soo Kim
- Department of Urology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 138-736, Republic of Korea.
| | - Sung-Wuk Jang
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 138-736, Republic of Korea.
- Asan Medical Center, Asan Medical Institute of Convergence Science and Technology, University of Ulsan College of Medicine, Seoul, 138-736, Republic of Korea.
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul, 138-736, Republic of Korea.
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Wang X, Wang B, Zhou L, Wang X, Veeraraghavan VP, Mohan SK, Xin F. Ganoderma lucidum put forth anti-tumor activity against PC-3 prostate cancer cells via inhibition of Jak-1/STAT-3 activity. Saudi J Biol Sci 2020; 27:2632-2637. [PMID: 32994721 PMCID: PMC7499110 DOI: 10.1016/j.sjbs.2020.05.044] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/22/2020] [Accepted: 05/27/2020] [Indexed: 12/25/2022] Open
Abstract
Background Prostate cancer (PCA) is a frequent cancer that mainly affects the men. Studying growth feature pathways modified during PCA development may facilitate researchers to expand embattled therapeutic strategies for prostate cancer. In present study, we examined the anticancer potentials of Ganoderma lucidum against the prostate cancer (PC-3) cells by inflection of JAK-1/STAT-3 signalling pathway. Methods The cytotoxicity of G. lucidum against the PC-3 cells was examined by MTT assay. The ROS production was monitored by using DCFH-DA staining. The apoptotic morphological alterations stimulatory potential of G. lucidum on PC-3 cells was inspected through the dual staining. The expression of Bcl-2, JAK-1, STAT3, Bax and CyclinD1 proteins were measured by western blotting. The caspase-3 and 9 functions were condensed by assay kit. Results Findings demonstrates the Ganoderma lucidum convince cytotoxicity, accretion of ROS, and apoptosis stimulation in PC-3 cells. In addition, signal transducer and activating transcription (STAT-3) is a successive oncogenic transcriptional factor that regularizes multiplication and apoptosis in cells. Discretion of STAT-3 transcription deliberated as original approach to hinder prostate cell growth. In present exploration, we ascertain that Ganoderma lucidum hold back STAT-3 translocation, in that way dropping the eminent expression of, BCL-2, cyclin-D1 and declined the Bax, caspase-3 and 9 expressions in PC-3 cells. Conclusion In the end our finding concluded that Ganoderma lucidum hinder prostate cell development and convinces apoptosis via hampering the translocation STAT-3.
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Affiliation(s)
- Xiaoming Wang
- Department of Urology, The Second Affiliated Hospital of Guangxi Medical University, Nanning City, Guangxi Province 530007, China
| | - Bo Wang
- Department of Urology, The Second Affiliated Hospital of Guangxi Medical University, Nanning City, Guangxi Province 530007, China
| | - Liquan Zhou
- Department of Urology, The Second Affiliated Hospital of Guangxi Medical University, Nanning City, Guangxi Province 530007, China
| | - Xiang Wang
- Department of Urology, The Second Affiliated Hospital of Guangxi Medical University, Nanning City, Guangxi Province 530007, China
| | - Vishnu Priya Veeraraghavan
- Department of Biochemistry, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 600 077, India
| | - Surapaneni Krishna Mohan
- Department of Biochemistry, Panimalar Medical College Hospital & Research Institute, Varadharajapuram, Poonamallee, Chennai 600 123, India
| | - Feng Xin
- Department of Urology, The Second People's Hospital of Lianyungang, Jiangsu Province 222006, China
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Ye M, Tian H, Lin S, Mo J, Li Z, Chen X, Liu J. Resveratrol inhibits proliferation and promotes apoptosis via the androgen receptor splicing variant 7 and PI3K/AKT signaling pathway in LNCaP prostate cancer cells. Oncol Lett 2020; 20:169. [PMID: 32934736 PMCID: PMC7471767 DOI: 10.3892/ol.2020.12032] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 07/17/2020] [Indexed: 02/06/2023] Open
Abstract
Prostate cancer is a common malignant tumor of the male genitourinary system and its incidence increases with age. Studies have shown that resveratrol (Res) inhibits cancer cell proliferation, migration, invasion and promotes apoptosis. The present study evaluated the effect of Res in two human prostate cancer cell lines (the androgen-dependent LNCaP cell line and the non-androgen-independent LNCaP-B cell line) on proliferation and apoptosis. A proliferation assay was used to demonstrate that Res inhibited proliferation of LNCaP and LNCaP-B cells in the range of 25–100 µM, and the effect was time- and dose-dependent. Using flow cytometry, it was reported that various concentrations of Res induced apoptosis in LNCaP and LNCaP-B cells, and that the apoptotic effect of Res was dose-dependent. A chemiluminescence assay showed that Res inhibited prostate specific antigen levels in LNCaP and LNCaP-B cells. Reverse transcription quantitative-PCR showed that Res inhibited the expression of androgen receptor (AR) in LNCaP and LNCaP-B cells at the mRNA level. Western blot analysis showed that Res suppressed the expression of AR protein as well as protein kinase B (AKT) phosphorylation. To study the effect of Res on the expression of AR splicing variant 7 (ARV7) and the PI3K/AKT signaling pathway in prostate cancer cells, as well as the underlying molecular mechanisms, the recombinant ARV7 expression vector Pcdna3.1-ARV7 was transfected into LNCaP and LNCaP cells and the aforementioned experiments were repeated. It was revealed that Res acted via the ARV7 and the AKT pathways. Taken together, the present results suggested that Res suppresses the proliferation of prostate cancer cells, promotes apoptosis and inhibits the expression of AR mRNA and protein. These effects likely resulted from inhibition of ARV7 and the AKT signaling pathway.
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Affiliation(s)
- Mushi Ye
- Laboratory of Urology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524000, P.R. China
| | - Huanshu Tian
- Laboratory of Urology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524000, P.R. China
| | - Shanhong Lin
- Laboratory of Urology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524000, P.R. China
| | - Jierong Mo
- Laboratory of Urology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524000, P.R. China
| | - Zhuo Li
- Laboratory of Urology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524000, P.R. China
| | - Xiaojun Chen
- Laboratory of Urology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524000, P.R. China
| | - Jianjun Liu
- Laboratory of Urology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524000, P.R. China
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Pungsrinont T, Sutter MF, Ertingshausen MCCM, Lakshmana G, Kokal M, Khan AS, Baniahmad A. Senolytic compounds control a distinct fate of androgen receptor agonist- and antagonist-induced cellular senescent LNCaP prostate cancer cells. Cell Biosci 2020; 10:59. [PMID: 32351687 PMCID: PMC7183592 DOI: 10.1186/s13578-020-00422-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 04/17/2020] [Indexed: 12/11/2022] Open
Abstract
Background The benefit of inducing cellular senescence as a tumor suppressive strategy remains questionable due to the senescence-associated secretory phenotype. Hence, studies and development of senolytic compounds that induce cell death in senescent cells have recently emerged. Senescent cells are hypothesized to exhibit different upregulated pro-survival/anti-apoptotic networks depending on the senescent inducers. This might limit the effect of a particular senolytic compound that targets rather only a specific pathway. Interestingly, cellular senescence in prostate cancer (PCa) cells can be induced by either androgen receptor (AR) agonists at supraphysiological androgen level (SAL) used in bipolar androgen therapy or by AR antagonists. This challenges to define ligand-specific senolytic compounds. Results Here, we first induced cellular senescence by treating androgen-sensitive PCa LNCaP cells with either SAL or the AR antagonist Enzalutamide (ENZ). Subsequently, cells were incubated with the HSP90 inhibitor Ganetespib (GT), the Bcl-2 family inhibitor ABT263, or the Akt inhibitor MK2206 to analyze senolysis. GT and ABT263 are known senolytic compounds. We observed that GT exhibits senolytic activity specifically in SAL-pretreated PCa cells. Mechanistically, GT treatment results in reduction of AR, Akt, and phospho-S6 (p-S6) protein levels. Surprisingly, ABT263 lacks senolytic effect in both AR agonist- and antagonist-pretreated cells. ABT263 treatment does not affect AR, Akt, or S6 protein levels. Treatment with MK2206 does not reduce AR protein level and, as expected, potently inhibits Akt phosphorylation. However, ENZ-induced cellular senescent cells undergo apoptosis by MK2206, whereas SAL-treated cells are resistant. In line with this, we reveal that the pro-survival p-S6 level is higher in SAL-induced cellular senescent PCa cells compared to ENZ-treated cells. These data indicate a difference in the agonist- or antagonist-induced cellular senescence and suggest a novel role of MK2206 as a senolytic agent preferentially for AR antagonist-treated cells. Conclusion Taken together, our data suggest that both AR agonist and antagonist induce cellular senescence but differentially upregulate a pro-survival signaling which preferentially sensitize androgen-sensitive PCa LNCaP cells to a specific senolytic compound.
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Affiliation(s)
- Thanakorn Pungsrinont
- 1Institute of Human Genetics, Jena University Hospital, Am Klinikum 1, 07740 Jena, Germany
| | - Malika Franziska Sutter
- 1Institute of Human Genetics, Jena University Hospital, Am Klinikum 1, 07740 Jena, Germany.,2Department of Hematology and Medical Oncology, Jena University Hospital, Jena, Germany
| | | | - Gopinath Lakshmana
- 1Institute of Human Genetics, Jena University Hospital, Am Klinikum 1, 07740 Jena, Germany
| | - Miriam Kokal
- 1Institute of Human Genetics, Jena University Hospital, Am Klinikum 1, 07740 Jena, Germany
| | - Amir Saeed Khan
- 1Institute of Human Genetics, Jena University Hospital, Am Klinikum 1, 07740 Jena, Germany.,3Laboratory for Experimental Immunology of the Eye, Department of Ophthalmology, University Hospital Cologne, Cologne, Germany
| | - Aria Baniahmad
- 1Institute of Human Genetics, Jena University Hospital, Am Klinikum 1, 07740 Jena, Germany
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Zhang J, Wang Y, Li SQ, Fang L, Wang XZ, Li J, Zhang HB, Huang B, Xu YM, Yang WM, Lin J, Min QH, Liao ZH, Wu Y, Liu J. Correction of Bcl-x splicing improves responses to imatinib in chronic myeloid leukaemia cells and mouse models. Br J Haematol 2020; 189:1141-1150. [PMID: 32189339 DOI: 10.1111/bjh.16472] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 12/16/2019] [Indexed: 01/25/2023]
Abstract
Imatinib mesylate (IM) resistance has become a major clinical problem for chronic myeloid leukaemia (CML). It is known that Bcl-x splicing is deregulated and is involved in multiple malignant cancer initiation and chemotherapy resistance, including CML. The aim of the present study was to correct the abnormal splicing of Bcl-x in CML and investigate the subsequent malignant phenotype changes, especially response to IM. The aberrant Bcl-x splicing in CML cells was effectively restored using vivo-Morpholino Antisense Oligomer (vMO). CCK-8 cell viability assay and flow cytometry showed that restoring of Bcl-x splicing increases IM-induced growth inhibition and apoptosis of K562 cells. Moreover, a more significant similar phenomenon was observed in imatinib-resistant CML cell lines K562/G01. Finally, establishment of CML xenograft model had also proved that correcting Bcl-x splicing in vivo can also enhance the anti-tumor effect of IM. Our findings suggest that vMO co-operating with IM can effectively increase the sensitivity of CML cells to IM both in vitro and in vivo, and Bcl-x splicing could become good candidates for chemotherapy-sensitized target in IM-resistant CML.
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Affiliation(s)
- Jing Zhang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Yan Wang
- Department of Hematology, Affiliated Hospital of Guizhou Medical University, Guiyang, China.,Key Laboratory of Hematological Disease Diagnostic, Treat Centre of Guizhou Province, Guiyang, China.,Department of Hematology, Guizhou Provincial Laboratory of Hematopoietic Stem Cell Transplantation Center, Guiyang, China
| | - Shu-Qi Li
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Le Fang
- Department of Clinical Laboratory, 521 Hospital of Ordnance Industry, Xi'an, China
| | - Xiao-Zhong Wang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Jing Li
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hai-Bin Zhang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Bo Huang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Yan-Mei Xu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Wei-Ming Yang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Jin Lin
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Qing-Hua Min
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Zhi-Hua Liao
- Department of Clinical Laboratory, Jiangxi Maternal and Child Health Care Hospital, Nanchang, China
| | - Yan Wu
- Center for Disease Control and Prevention of Donghu District, Nanchang, China
| | - Jing Liu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
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Dual role of Endoplasmic Reticulum Stress-Mediated Unfolded Protein Response Signaling Pathway in Carcinogenesis. Int J Mol Sci 2019; 20:ijms20184354. [PMID: 31491919 PMCID: PMC6770252 DOI: 10.3390/ijms20184354] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 08/30/2019] [Accepted: 09/03/2019] [Indexed: 12/24/2022] Open
Abstract
Cancer constitutes a grave problem nowadays in view of the fact that it has become one of the main causes of death worldwide. Poor clinical prognosis is presumably due to cancer cells metabolism as tumor microenvironment is affected by oxidative stress. This event triggers adequate cellular response and thereby creates appropriate conditions for further cancer progression. Endoplasmic reticulum (ER) stress occurs when the balance between an ability of the ER to fold and transfer proteins and the degradation of the misfolded ones become distorted. Since ER is an organelle relatively sensitive to oxidative damage, aforementioned conditions swiftly cause the activation of the unfolded protein response (UPR) signaling pathway. The output of the UPR, depending on numerous factors, may vary and switch between the pro-survival and the pro-apoptotic branch, and hence it displays opposing effects in deciding the fate of the cancer cell. The role of UPR-related proteins in tumorigenesis, such as binding the immunoglobulin protein (BiP) and inositol-requiring enzyme-1α (IRE1α), activating transcription factor 6 (ATF6) or the protein kinase R (PKR)-like endoplasmic reticulum kinase (PERK), has already been specifically described so far. Nevertheless, due to the paradoxical outcomes of the UPR activation as well as gaps in current knowledge, it still needs to be further investigated. Herein we would like to elicit the actual link between neoplastic diseases and the UPR signaling pathway, considering its major branches and discussing its potential use in the development of a novel, anti-cancer, targeted therapy.
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Pilling AB, Hwang C. Targeting prosurvival BCL2 signaling through Akt blockade sensitizes castration-resistant prostate cancer cells to enzalutamide. Prostate 2019; 79:1347-1359. [PMID: 31228231 PMCID: PMC6617752 DOI: 10.1002/pros.23843] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/01/2019] [Accepted: 05/14/2019] [Indexed: 11/09/2022]
Abstract
BACKGROUND Prostate cancer that recurs after initial treatment inevitably progresses to castration-resistant prostate cancer (CRPC), the lethal stage of the disease. Despite improvements in outcomes from next generation androgen receptor (AR)-axis inhibitors, CRPC remains incurable. Therapeutic strategies to target AR antagonist resistance are urgently needed to improve outcomes for men with this lethal form of prostate cancer. METHODS Apoptosis and BCL2 family signaling were characterized in cell line models of CRPC. Quantitative real-time polymerase chain reaction and Western blot analysis were used to determine BCL2 expression levels. Drug sensitivity was determined by proliferation, survival and apoptosis analysis. Protein-protein interactions were evaluated by coimmunoprecipitation followed by Western blot detection. RESULTS In the present study, we identify antiapoptotic BCL2 protein signaling as a mechanism of resistance to AR antagonist enzalutamide. In CRPC cell line models, we found that BCL-xL and MCL-1 proteins block apoptosis through binding and sequestering proapoptotic proteins BIM and BAX, resulting in cell survival in response to enzalutamide. Treatment with BH3-mimetics targeting BCL-xL or MCL-1 disrupts these interactions and activates apoptosis, sensitizing CRPC cells to enzalutamide. Importantly, we demonstrate that PI3K/Akt signaling is activated in response to enzalutamide and mediates apoptosis evasion through inactivation of BAD, a BH3-only protein that activates proapoptotic signlaing through inhbition of BCL-xL. Inhibition of Akt activates BAD, resulting in increased apoptosis and sensitivity to enzalutamide, demonstrating an alternative therapeutic strategy to target drug resistance. CONCLUSIONS These results demonstrate that CRPC cells employ multiple mechanisms to mediate apoptosis evasion through BCL2 signaling, suggesting this pathway is critical for survival. This study provides a strong preclinical rationale for developing therapeutic strategies to target antiapoptotic BCL2 signaling in combination with AR antagonists to improve treatment options for patients with advanced prostate cancer.
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Affiliation(s)
- Amanda B. Pilling
- Department of Internal Medicine, Division of Hematology/Oncology, Henry Ford Health SystemHenry Ford Cancer InstituteDetroitMichigan
| | - Clara Hwang
- Department of Internal Medicine, Division of Hematology/Oncology, Henry Ford Health SystemHenry Ford Cancer InstituteDetroitMichigan
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