1
|
Rawat C, Heemers HV. Alternative splicing in prostate cancer progression and therapeutic resistance. Oncogene 2024; 43:1655-1668. [PMID: 38658776 PMCID: PMC11136669 DOI: 10.1038/s41388-024-03036-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/26/2024]
Abstract
Prostate cancer (CaP) remains the second leading cause of cancer deaths in western men. CaP mortality results from diverse molecular mechanisms that mediate resistance to the standard of care treatments for metastatic disease. Recently, alternative splicing has been recognized as a hallmark of CaP aggressiveness. Alternative splicing events cause treatment resistance and aggressive CaP behavior and are determinants of the emergence of the two major types of late-stage treatment-resistant CaP, namely castration-resistant CaP (CRPC) and neuroendocrine CaP (NEPC). Here, we review recent multi-omics data that are uncovering the complicated landscape of alternative splicing events during CaP progression and the impact that different gene transcript isoforms can have on CaP cell biology and behavior. We discuss renewed insights in the molecular machinery by which alternative splicing occurs and contributes to the failure of systemic CaP therapies. The potential for alternative splicing events to serve as diagnostic markers and/or therapeutic targets is explored. We conclude by considering current challenges and promises associated with splicing-modulating therapies, and their potential for clinical translation into CaP patient care.
Collapse
Affiliation(s)
- Chitra Rawat
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, 44195, USA
| | - Hannelore V Heemers
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, 44195, USA.
| |
Collapse
|
2
|
Dong X, Wang L, Wang D, Yu M, Yang XJ, Cai H. Proteomic study on nintedanib in gastric cancer cells. PeerJ 2024; 12:e16771. [PMID: 38406279 PMCID: PMC10893871 DOI: 10.7717/peerj.16771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 12/18/2023] [Indexed: 02/27/2024] Open
Abstract
Background Gastric cancer is a very common gastrointestinal tumor with a high mortality rate. Nintedanib has been shown to significantly reduce tumor cell proliferation and increase apoptosis in gastric cancer cells in vitro. However, its systemic action mechanism on gastric cancer cells remains unclear. A high-throughput proteomic approach should help identify the potential mechanisms and targets of nintedanib on gastric cancer cells. Methods The effects of nintedanib on the biological behavior of gastric cancer cells were evaluated. A cytotoxic proliferation assay was performed to estimate the half maximal inhibitory concentration (IC50). AGS cells were divided into control, and nintedanib-treated groups (5 µM, 48 h), and differential protein expression was investigated using tandem mass tags (TMT) proteomics. The molecular mechanisms of these differentially expressed proteins and their network interactions were then analyzed using bioinformatics, and potential nintedanib targets were identified. Results This study identified 845 differentially expressed proteins in the nintedanib-treated group (compared to the control group), comprising 526 up-regulated and 319 down-regulated proteins. Bioinformatics analysis revealed that the differentially expressed proteins were primarily enriched in biological pathways for branched-chain amino acid metabolism, steroid biosynthesis, propionate metabolism, fatty acid metabolism, lysosome, peroxisome, and ferroptosis. Key driver analysis revealed that proteins, such as enoyl-CoA hydratase and 3-hydroxyacyl CoA dehydrogenase (EHHADH), isocitrate dehydrogenase 1 (IDH1), acyl-CoA oxidase 1 (ACOX1), acyl-CoA oxidase 2 (ACOX2), acyl-CoA oxidase 3 (ACOX3), and acetyl-CoA acyltransferase 1 (ACAA1) could be linked with nintedanib action. Conclusion Nintedanib inhibits the proliferation, invasion, and metastasis of gastric cancer cells. The crossover pathways and protein networks predicted by proteomics should provide more detailed molecular information enabling the use of nintedanib against gastric cancer.
Collapse
Affiliation(s)
- Xiaohua Dong
- The First School of Clinical Medicine, Lanzhou University, LanZhou, China
- Department of General Surgery, Gansu Provincial Hospital, LanZhou, China
- Key Laboratory of Molecular Diagnostics and Precision Medicine for Surgical Oncology in Gansu Province and NHC Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Gansu Provincial Hospital, LanZhou, China
| | - Liuli Wang
- The First School of Clinical Medicine, Lanzhou University, LanZhou, China
| | - Da Wang
- Department of General Surgery, Gansu Provincial Hospital, LanZhou, China
| | - Miao Yu
- Department of General Surgery, Gansu Provincial Hospital, LanZhou, China
- Key Laboratory of Molecular Diagnostics and Precision Medicine for Surgical Oncology in Gansu Province and NHC Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Gansu Provincial Hospital, LanZhou, China
| | - Xiao jun Yang
- The First School of Clinical Medicine, Lanzhou University, LanZhou, China
- Department of General Surgery, Gansu Provincial Hospital, LanZhou, China
- Key Laboratory of Molecular Diagnostics and Precision Medicine for Surgical Oncology in Gansu Province and NHC Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Gansu Provincial Hospital, LanZhou, China
| | - Hui Cai
- The First School of Clinical Medicine, Lanzhou University, LanZhou, China
- Department of General Surgery, Gansu Provincial Hospital, LanZhou, China
- Key Laboratory of Molecular Diagnostics and Precision Medicine for Surgical Oncology in Gansu Province and NHC Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Gansu Provincial Hospital, LanZhou, China
| |
Collapse
|
3
|
Shiota M, Endo S, Blas L, Fujimoto N, Eto M. Steroidogenesis in castration-resistant prostate cancer. Urol Oncol 2022; 41:240-251. [PMID: 36376200 DOI: 10.1016/j.urolonc.2022.10.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 10/13/2022] [Accepted: 10/15/2022] [Indexed: 11/13/2022]
Abstract
Castration resistance is in part attributable to aberrant activation of androgen receptor (AR) signaling by the intracrine activation of androgen precursors derived from adrenal glands. To overcome this, novel AR pathway inhibitors (ARPIs) that suppress androgen synthesis by CYP17 inhibition or AR activation by antiandrogen effects have been developed. However, primary or acquired resistance to these ARPIs occurs; in turn attributable, at least in part, to the maintained androgen milieu despite intensive suppression of AR signaling similar to castration resistance. In addition to the classical pathway to produce potent androgens such as testosterone and dihydrotestosterone, the alternative pathway and the backdoor pathway which bypasses testosterone to produce dihydrotestosterone have been shown to play a role in intratumor steroidogenesis. Furthermore, the 11β-hydroxyandrostenedione pathway to produce the potent oxygenated androgens 11-ketotestosterone and 11-ketodihydrotestosterone has been suggested to be functional in prostate cancer. These steroidogenesis pathways produce potent androgens that promote tumor resistance to endocrine therapy including novel ARPIs. Here, we overview the current evidence on the pathological androgen milieu by altered metabolism and transport in prostate cancer, leading to resistance to endocrine therapy.
Collapse
|
4
|
Sigala S, Rossini E, Abate A, Tamburello M, Bornstein SR, Hantel C. An update on adrenocortical cell lines of human origin. Endocrine 2022; 77:432-437. [PMID: 35764904 PMCID: PMC9385758 DOI: 10.1007/s12020-022-03112-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 06/10/2022] [Indexed: 12/23/2022]
Abstract
Adrenocortical carcinoma (ACC) is a rare, heterogenous and highly malignant disease. Management of ACC is dependent on disease stage with complete surgical resection as the only potentially curative option. However, advanced, un-resectable, metastatic stages and also recurrences often require systemic treatments, which are unfortunately nowadays still unsatisfactory. The scarcity of preclinical models reflecting patient heterogeneities and furthermore drug-resistant phenotypes, has hampered the progress and development of new therapies in recent years. In this review, we provide an overview on the classical models and substantial progress which has been made over the last years in context of this aggressive disease.
Collapse
Affiliation(s)
- Sandra Sigala
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, 25124, Brescia, Italy
| | - Elisa Rossini
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, 25124, Brescia, Italy
| | - Andrea Abate
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, 25124, Brescia, Italy
| | - Mariangela Tamburello
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, 25124, Brescia, Italy
| | - Stefan R Bornstein
- Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ) and University of Zurich (UZH), 8091, Zürich, Switzerland
- Medizinische Klinik und Poliklinik III, University Hospital Carl Gustav Carus Dresden, 01307, Dresden, Germany
- Diabetes and Nutritional Sciences, King's College London, London, WC2R 2LS, UK
- Center for Regenerative Therapies, Technische Universität Dresden, 01307, Dresden, Germany
- Paul-Langerhans-Institute Dresden, Helmholtz Center Munich, University Hospital Carl Gustav Carus, Faculty of Medicine, Technische Universität Dresden, 01307, Dresden, Germany
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, 636921, Singapore
| | - Constanze Hantel
- Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ) and University of Zurich (UZH), 8091, Zürich, Switzerland.
- Medizinische Klinik und Poliklinik III, University Hospital Carl Gustav Carus Dresden, 01307, Dresden, Germany.
| |
Collapse
|
5
|
Sui JSY, Martin P, Keogh A, Murchan P, Ryan L, Nicholson S, Cuffe S, Broin PÓ, Finn SP, Fitzmaurice GJ, Ryan R, Young V, Gray SG. Altered expression of ACOX2 in non-small cell lung cancer. BMC Pulm Med 2022; 22:321. [PMID: 35999530 PMCID: PMC9396774 DOI: 10.1186/s12890-022-02115-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 08/16/2022] [Indexed: 12/24/2022] Open
Abstract
Peroxisomes are organelles that play essential roles in many metabolic processes, but also play roles in innate immunity, signal transduction, aging and cancer. One of the main functions of peroxisomes is the processing of very-long chain fatty acids into metabolites that can be directed to the mitochondria. One key family of enzymes in this process are the peroxisomal acyl-CoA oxidases (ACOX1, ACOX2 and ACOX3), the expression of which has been shown to be dysregulated in some cancers. Very little is however known about the expression of this family of oxidases in non-small cell lung cancer (NSCLC). ACOX2 has however been suggested to be elevated at the mRNA level in over 10% of NSCLC, and in the present study using both standard and bioinformatics approaches we show that expression of ACOX2 is significantly altered in NSCLC. ACOX2 mRNA expression is linked to a number of mutated genes, and associations between ACOX2 expression and tumour mutational burden and immune cell infiltration were explored. Links between ACOX2 expression and candidate therapies for oncogenic driver mutations such as KRAS were also identified. Furthermore, levels of acyl-CoA oxidases and other associated peroxisomal genes were explored to identify further links between the peroxisomal pathway and NSCLC. The results of this biomarker driven study suggest that ACOX2 may have potential clinical utility in the diagnosis, prognosis and stratification of patients into various therapeutically targetable options.
Collapse
Affiliation(s)
- Jane S Y Sui
- Thoracic Oncology Research Group, Laboratory Medicine and Molecular Pathology, Central Pathology Laboratory, St. James's Hospital, Dublin, D08RX0X, Ireland.,Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York, USA
| | - Petra Martin
- Thoracic Oncology Research Group, Laboratory Medicine and Molecular Pathology, Central Pathology Laboratory, St. James's Hospital, Dublin, D08RX0X, Ireland.,Midland Regional Hospital Tullamore, Tullamore, Ireland
| | - Anna Keogh
- Thoracic Oncology Research Group, Laboratory Medicine and Molecular Pathology, Central Pathology Laboratory, St. James's Hospital, Dublin, D08RX0X, Ireland
| | - Pierre Murchan
- Department of Histopathology and Morbid Anatomy, Trinity College Dublin, Dublin, Ireland.,School of Mathematics, Statistics, and Applied Mathematics, National University of Ireland Galway, Galway, Ireland
| | - Lisa Ryan
- Department of Histopathology, Labmed Directorate, St. James's Hospital, Dublin, Ireland
| | - Siobhan Nicholson
- Department of Histopathology, Labmed Directorate, St. James's Hospital, Dublin, Ireland
| | - Sinead Cuffe
- HOPE Directorate, St James's Hospital, Dublin, Ireland
| | - Pilib Ó Broin
- School of Mathematics, Statistics, and Applied Mathematics, National University of Ireland Galway, Galway, Ireland
| | - Stephen P Finn
- Thoracic Oncology Research Group, Laboratory Medicine and Molecular Pathology, Central Pathology Laboratory, St. James's Hospital, Dublin, D08RX0X, Ireland.,Department of Histopathology and Morbid Anatomy, Trinity College Dublin, Dublin, Ireland.,Department of Histopathology, Labmed Directorate, St. James's Hospital, Dublin, Ireland.,Cancer Molecular Diagnostics, Labmed Directorate, St. James's Hospital, Dublin, Ireland
| | - Gerard J Fitzmaurice
- Surgery, Anaesthesia and Critical Care Directorate, St James's Hospital, Dublin, Ireland
| | - Ronan Ryan
- Surgery, Anaesthesia and Critical Care Directorate, St James's Hospital, Dublin, Ireland
| | - Vincent Young
- Surgery, Anaesthesia and Critical Care Directorate, St James's Hospital, Dublin, Ireland
| | - Steven G Gray
- Thoracic Oncology Research Group, Laboratory Medicine and Molecular Pathology, Central Pathology Laboratory, St. James's Hospital, Dublin, D08RX0X, Ireland. .,Department of Clinical Medicine, Trinity College Dublin, Dublin, Ireland. .,School of Biological Sciences, Technological University Dublin, Dublin, Ireland.
| |
Collapse
|
6
|
Zhai F, Li J, Ye M, Jin X. The functions and effects of CUL3-E3 ligases mediated non-degradative ubiquitination. Gene X 2022; 832:146562. [PMID: 35580799 DOI: 10.1016/j.gene.2022.146562] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 03/30/2022] [Accepted: 05/06/2022] [Indexed: 02/09/2023] Open
Abstract
Ubiquitination of substrates usually have two fates: one is degraded by 26S proteasome, and the other is non-degradative ubiquitination modification which is associated with cell cycle regulation, chromosome inactivation, protein transportation, tumorigenesis, achondroplasia, and neurological diseases. Cullin3 (CUL3), a scaffold protein, binding with the Bric-a-Brac-Tramtrack-Broad-complex (BTB) domain of substrates recognition adaptor and RING-finger protein 1 (RBX1) form ubiquitin ligases (E3). Based on the current researches, this review has summarized the functions and effects of CUL3-E3 ligases mediated non-degradative ubiquitination.
Collapse
Affiliation(s)
- Fengguang Zhai
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathphysiology, Medical School of Ningbo University, Ningbo 315211, China
| | - Jingyun Li
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathphysiology, Medical School of Ningbo University, Ningbo 315211, China
| | - Meng Ye
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathphysiology, Medical School of Ningbo University, Ningbo 315211, China.
| | - Xiaofeng Jin
- The Affiliated Hospital of Medical School, Ningbo University, Ningbo 315020, China; Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathphysiology, Medical School of Ningbo University, Ningbo 315211, China.
| |
Collapse
|
7
|
Zhao Y, Li J, Chen J, Ye M, Jin X. Functional roles of E3 ubiquitin ligases in prostate cancer. J Mol Med (Berl) 2022; 100:1125-1144. [PMID: 35816219 DOI: 10.1007/s00109-022-02229-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 06/20/2022] [Accepted: 06/22/2022] [Indexed: 12/16/2022]
Abstract
Prostate cancer (PCa) is a malignant epithelial tumor of the prostate gland with a high male cancer incidence. Numerous studies indicate that abnormal function of ubiquitin-proteasome system (UPS) is associated with the progression and metastasis of PCa. E3 ubiquitin ligases, key components of UPS, determine the specificity of substrates, and substantial advances of E3 ubiquitin ligases have been reached recently. Herein, we introduce the structures and functions of E3 ubiquitin ligases and summarize the mechanisms of E3 ubiquitin ligases-related PCa signaling pathways. In addition, some progresses in the development of inhibitors targeting E3 ubiquitin ligases are also included.
Collapse
Affiliation(s)
- Yiting Zhao
- Department of Oncology, The Affiliated Hospital of Medical School, Ningbo University, Ningbo, 315020, China.,Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo, 315211, China.,Department of Chemoradiotherapy, the Affiliated People's Hospital of Ningbo University, Ningbo, 315040, China
| | - Jinyun Li
- Department of Oncology, The Affiliated Hospital of Medical School, Ningbo University, Ningbo, 315020, China.,Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo, 315211, China
| | - Jun Chen
- Department of Chemoradiotherapy, the Affiliated People's Hospital of Ningbo University, Ningbo, 315040, China
| | - Meng Ye
- Department of Oncology, The Affiliated Hospital of Medical School, Ningbo University, Ningbo, 315020, China.,Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo, 315211, China
| | - Xiaofeng Jin
- Department of Oncology, The Affiliated Hospital of Medical School, Ningbo University, Ningbo, 315020, China. .,Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo, 315211, China.
| |
Collapse
|
8
|
Sigala S, Bothou C, Penton D, Abate A, Peitzsch M, Cosentini D, Tiberio GAM, Bornstein SR, Berruti A, Hantel C. A Comprehensive Investigation of Steroidogenic Signaling in Classical and New Experimental Cell Models of Adrenocortical Carcinoma. Cells 2022; 11:1439. [PMID: 35563746 PMCID: PMC9103477 DOI: 10.3390/cells11091439] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/20/2022] [Accepted: 04/22/2022] [Indexed: 12/26/2022] Open
Abstract
Adrenocortical carcinoma is a heterogeneous and aggressive cancer that originates from steroidogenic cells within the adrenal cortex. In this study, we have assessed for the preclinical gold standard NCI-H295 in direct comparison with the more recently established MUC-1 and a here newly reported ACC cell line (TVBF-7) the mutational status of important driver genes (TP53, MEN1, PRKAR1A, CTNNB1, APC, ZNRF-3, IGF-2, EGFR, RB1, BRCA1, BRCA2, RET, GNAS and PTEN), Wnt-signaling specificities (CTNNB1 mutation vs. APC mutation vs. wildtype), steroidogenic-(CYP11A1, CYP17A1, HSD3B2, HSD17B4, CYP21A2, CYP11B1, CYP11B2, MC2R, AT1R) and nuclear-receptor-signaling (AR, ER, GCR), varying electrophysiological potentials as well as highly individual hormone secretion profiles (Cortisol, Aldosterone, DHEA, DHEAS, Testosterone, 17-OH Progesterone, among others) which were investigated under basal and stimulated conditions (ACTH, AngII, FSK). Our findings reveal important genetic and pathophysiological characteristics for these three cell lines and reveal the importance of such cell-line panels reflecting differential endocrine functionalities to thereby better reflect clinically well-known ACC patient heterogeneities in preclinical studies.
Collapse
Affiliation(s)
- Sandra Sigala
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, 25124 Brescia, Italy; (S.S.); (A.A.)
| | - Christina Bothou
- Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ) and University of Zurich (UZH), 8091 Zürich, Switzerland; (C.B.); (S.R.B.)
| | - David Penton
- Electrophysiology Facility (e-phac), Department of Molecular Life Sciences, University of Zurich (UZH), 8057 Zürich, Switzerland;
| | - Andrea Abate
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, 25124 Brescia, Italy; (S.S.); (A.A.)
| | - Mirko Peitzsch
- Medizinische Klinik und Poliklinik III, University Hospital Carl Gustav Carus Dresden, 01307 Dresden, Germany;
| | - Deborah Cosentini
- Medical Oncology Unit, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia at ASST Spedali Civili di Brescia, 25124 Brescia, Italy; (D.C.); (A.B.)
| | - Guido A. M. Tiberio
- Surgical Clinic, Department of Clinical and Experimental Sciences, University of Brescia at ASST Spedali Civili di Brescia, 25124 Brescia, Italy;
| | - Stefan R. Bornstein
- Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ) and University of Zurich (UZH), 8091 Zürich, Switzerland; (C.B.); (S.R.B.)
- Medizinische Klinik und Poliklinik III, University Hospital Carl Gustav Carus Dresden, 01307 Dresden, Germany;
- Diabetes and Nutritional Sciences, King’s College London, London WC2R 2LS, UK
- Center for Regenerative Therapies, Technische Universität Dresden, 01307 Dresden, Germany
- Paul-Langerhans-Institute Dresden, Helmholtz Center Munich, University Hospital Carl Gustav Carus, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 636921, Singapore
| | - Alfredo Berruti
- Medical Oncology Unit, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia at ASST Spedali Civili di Brescia, 25124 Brescia, Italy; (D.C.); (A.B.)
| | - Constanze Hantel
- Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ) and University of Zurich (UZH), 8091 Zürich, Switzerland; (C.B.); (S.R.B.)
- Medizinische Klinik und Poliklinik III, University Hospital Carl Gustav Carus Dresden, 01307 Dresden, Germany;
| |
Collapse
|
9
|
Shi L, Yan Y, He Y, Yan B, Pan Y, Orme JJ, Zhang J, Xu W, Pang J, Huang H. Mutated SPOP E3 Ligase Promotes 17βHSD4 Protein Degradation to Drive Androgenesis and Prostate Cancer Progression. Cancer Res 2021; 81:3593-3606. [PMID: 33762355 DOI: 10.1158/0008-5472.can-20-3258] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 02/01/2021] [Accepted: 03/22/2021] [Indexed: 11/16/2022]
Abstract
Molecular mechanisms underlying intratumoral androgenesis and aberrant androgen receptor (AR) activation in prostate cancer remain poorly understood. Here we demonstrate that ectopic expression of the E3 ubiquitin ligase adaptor speckle-type poxvirus and zinc finger domain protein (SPOP) stabilizes 17βHSD4. SPOP bound a functional substrate-binding consensus (SBC) motif 315RATST319 in 17βHSD4 and promoted nondegradable K27- and K29-linked polyubiquitination of 17βHSD4. The effect of SPOP was antagonized by serum- and glucocorticoid kinase-3 (SGK3)-mediated phosphorylation of serine 318 (S318) in the SBC and S318 phosphorylation-dependent binding of SKP2 E3 ligase and subsequent K48-linked polyubiquitination and proteasomal degradation of 17βHSD4. Prostate cancer-associated SPOP mutations impaired the SPOP-17βHSD4 interaction, caused 17βHSD4 protein destruction in prostate cancer cells in culture and patient specimens, and increased testosterone production and prostate cancer cell growth in vitro and in mouse models. Thus, we have identified SPOP and SKP2 as two essential E3 ubiquitin ligases that exert opposite effects on 17βHSD4 protein degradation and intratumoral androgenesis in prostate cancer cells. We further demonstrate that SPOP mutations or SKP2 overexpression contribute to prostate cancer progression by decreasing 17βHSD4 expression and increasing intratumoral androgen synthesis. SIGNIFICANCE: This study reveals a novel mechanism of aberrant AR activation in SPOP-mutated prostate cancer and uncovers putative biomarkers for effective treatment by AR-targeted therapies.
Collapse
Affiliation(s)
- Lei Shi
- Department of Radiation Oncology, the Fourth Hospital of Harbin Medical University, Harbin, China.,Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Yuqian Yan
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Yundong He
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Binyuan Yan
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, Minnesota.,Department of Urology, Kidney and Urology Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Yunqian Pan
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Jacob J Orme
- Division of Medical Oncology, Department of Internal Medicine, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| | - Jun Zhang
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine and Science, Scottsdale, Arizona
| | - Wanhai Xu
- Department of Urology, the Fourth Hospital of Harbin Medical University, Harbin, China
| | - Jun Pang
- Department of Urology, Kidney and Urology Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China.
| | - Haojie Huang
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, Minnesota. .,Department of Urology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota.,Mayo Clinic Cancer Center, Mayo Clinic College of Medicine and Science, Rochester, Minnesota
| |
Collapse
|
10
|
Penning TM, Asangani IA, Sprenger C, Plymate S. Intracrine androgen biosynthesis and drug resistance. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2020; 3:912-929. [PMID: 35582223 PMCID: PMC8992556 DOI: 10.20517/cdr.2020.60] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/30/2020] [Accepted: 10/10/2020] [Indexed: 06/15/2023]
Abstract
Castration-resistant prostate cancer is the lethal form of prostate cancer and most commonly remains dependent on androgen receptor (AR) signaling. Current therapies use AR signaling inhibitors (ARSI) exemplified by abiraterone acetate, a P450c17 inhibitor, and enzalutamide, a potent AR antagonist. However, drug resistance to these agents occurs within 12-18 months and they only prolong overall survival by 3-4 months. Multiple mechanisms can contribute to ARSI drug resistance. These mechanisms can include but are not limited to germline mutations in the AR, post-transcriptional alterations in AR structure, and adaptive expression of genes involved in the intracrine biosynthesis and metabolism of androgens within the tumor. This review focuses on intracrine androgen biosynthesis, how this can contribute to ARSI drug resistance, and therapeutic strategies that can be used to surmount these resistance mechanisms.
Collapse
Affiliation(s)
- Trevor M. Penning
- Department of Systems Pharmacology & Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Irfan A. Asangani
- Department Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Cynthia Sprenger
- Division of Gerontology & Geriatric Medicine, Department of Medicine, University of Washington, Seattle, WA 98109, USA
| | - Stephen Plymate
- Division of Gerontology & Geriatric Medicine, Department of Medicine, University of Washington, Seattle, WA 98109, USA
- Geriatric Research Education and Clinical Center (GRECC), VA Puget Sound Health Care System, Seattle, WA 98108, USA
| |
Collapse
|
11
|
Yamashita S, Hattori N, Fujii S, Yamaguchi T, Takahashi M, Hozumi Y, Kogawa T, El-Omar O, Liu YY, Arai N, Mori A, Higashimoto H, Ushijima T, Mukai H. Multi-omics analyses identify HSD17B4 methylation-silencing as a predictive and response marker of HER2-positive breast cancer to HER2-directed therapy. Sci Rep 2020; 10:15530. [PMID: 32968149 PMCID: PMC7511952 DOI: 10.1038/s41598-020-72661-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 09/02/2020] [Indexed: 12/12/2022] Open
Abstract
HER2-positive breast cancers that achieve pathological complete response (pCR) after HER2-directed therapy consistently have good survival. We previously identified HSD17B4 methylation as a marker for pCR by methylation screening. Here, we aimed to identify a new marker by conducting a multi-omics analysis of materials prepared by laser capture microdissection, and adding 71 new samples. In the screening set (n = 36), mutations, methylation, and expression were analyzed by targeted sequencing, Infinium 450 K, and expression microarray, respectively, and 15 genes were identified as differentially expressed and eight genomic regions as differentially methylated between cancer samples with and without pCR. In a validation set (n = 47), one gene showed differential expression, and one region had differential methylation. Further, in the re-validation set (n = 55), all new samples, only HSD17B4 methylation was significantly different. The HSD17B4 methylation was at the transcriptional start site of its major variant, and was associated with its silencing. HSD17B4 was highly expressed in the vast majority of human cancers, and its methylation was present only in breast cancers and one lymphoblastic leukemia cell line. A combination of estrogen receptor-negative status and HSD17B4 methylation showed a positive predictive value of 80.0%. During HER2-directed neoadjuvant therapy, HSD17B4 methylation was the most reliable marker to monitor response to the therapy. These results showed that HSD17B4 methylation is a candidate predictive and response marker of HER2-positive breast cancer to HER2-directed therapy.
Collapse
Affiliation(s)
- Satoshi Yamashita
- Division of Epigenomics, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Naoko Hattori
- Division of Epigenomics, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Satoshi Fujii
- Division of Pathology, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Takeshi Yamaguchi
- Department of Medical Oncology, Musashino Red Cross Hospital, 1-26-1, Kyonan, Musashino, Tokyo, 180-8610, Japan
| | - Masato Takahashi
- Department of Breast Surgery, Hokkaido Cancer Center, National Hospital Organization, Kikusui 4-2, Shiroishi-Ku, Sapporo, 003-0806, Japan
| | - Yasuo Hozumi
- Department of Breast and Endocrine Surgery, Ibaraki Clinical Education and Training Center, Faculty of Medicine, Tsukuba University, Tsukuba, Japan.,Department of Breast Surgery, Ibaraki Prefectural Central Hospital, 6528 Koibuchi, Kasama, Ibaraki, 309-1793, Japan
| | - Takahiro Kogawa
- Department of Breast and Medical Oncology, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Omar El-Omar
- Division of Epigenomics, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Yu-Yu Liu
- Division of Epigenomics, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Nobuaki Arai
- Division of Epigenomics, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Akiko Mori
- H.U. Group Innovative Cancer Laboratory, H.U. Group Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Hiroko Higashimoto
- H.U. Group Innovative Cancer Laboratory, H.U. Group Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Toshikazu Ushijima
- Division of Epigenomics, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan.
| | - Hirofumi Mukai
- Department of Breast and Medical Oncology, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| |
Collapse
|
12
|
Huang H, Liu R, Huang Y, Feng Y, Fu Y, Chen L, Chen Z, Cai Y, Zhang Y, Chen Y. Acetylation-mediated degradation of HSD17B4 regulates the progression of prostate cancer. Aging (Albany NY) 2020; 12:14699-14717. [PMID: 32678070 PMCID: PMC7425433 DOI: 10.18632/aging.103530] [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: 11/04/2019] [Accepted: 05/27/2020] [Indexed: 01/09/2023]
Abstract
Steroidogenic enzymes are crucial in prostate cancer (PCa) progression. 17β-Hydroxysteroid dehydrogenase type 4 (HSD17B4), encoded by HSD17B4, lacks catalytic capacity in androgen metabolism. Now the detailed role and molecular mechanism of PCa development are largely unknown. Here we showed that the expression of HSD17B4 was increased in PCa tissues compared to paired paratumor tissues. HSD17B4 knockdown in PCa cells significantly suppressed its proliferation, migration and invasion, while overexpressing HSD17B4 had opposite effects. Mechanistically, we found that the protein level of HSD17B4 was regulated by its acetylation at lysine 669(K669). Dihydroxytestosterone (DHT) treatment increased HSD17B4 acetylation and then promoted its degradation via chaperone-mediated autophagy (CMA). SIRT3 directly interacted with HSD17B4 to inhibit its acetylation and enhance its stability. In addition, we identified CREBBP as a regulator of the K669 acetylation and degradation of HSD17B4, affecting PC cell proliferation, migration and invasion. Notably, in PCa tissues and paired paratumor tissues, the level of HSD17B4 was negatively correlated with its K669 acetylation. Taken together, this study identified a novel role of HSD17B4 in PCa progression and suggested that HSD17B4 and its upstream regulators may be potential therapeutic targets for PCa intervention.
Collapse
Affiliation(s)
- Huichao Huang
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, XiangYa Hospital, Central South University, Changsha 410008, China
| | - Ruijie Liu
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, XiangYa Hospital, Central South University, Changsha 410008, China.,Department of Pathology, XiangYa Hospital, Central South University, Changsha 410008, China
| | - Yahui Huang
- Department of Pathology, XuChang Central Hospital, XuChang 461670, China
| | - Yilu Feng
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, XiangYa Hospital, Central South University, Changsha 410008, China
| | - Ying Fu
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, XiangYa Hospital, Central South University, Changsha 410008, China
| | - Lin Chen
- Molecular and Computational Biology Program, Departments of Biological Sciences and Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Zhuchu Chen
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, XiangYa Hospital, Central South University, Changsha 410008, China
| | - Yi Cai
- Department of Urology, XiangYa Hospital, Central South University, Changsha 410008, China
| | - Ye Zhang
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, XiangYa Hospital, Central South University, Changsha 410008, China
| | - Yongheng Chen
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, XiangYa Hospital, Central South University, Changsha 410008, China.,National Clinical Research Center for Geriatric Disorders, XiangYa Hospital, Central South University, Changsha 410008, China
| |
Collapse
|
13
|
Zhang X, Yang H, Zhang J, Gao F, Dai L. HSD17B4, ACAA1, and PXMP4 in Peroxisome Pathway Are Down-Regulated and Have Clinical Significance in Non-small Cell Lung Cancer. Front Genet 2020; 11:273. [PMID: 32265992 PMCID: PMC7103649 DOI: 10.3389/fgene.2020.00273] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 03/06/2020] [Indexed: 12/25/2022] Open
Abstract
To explore the potential functions and clinical significances of peroxisomes during lung cancer development and progression, we investigated the expressional profiles of peroxisome pathway genes and their correlations with clinical features in non-small cell lung cancer (NSCLC). The RNA-seq data of NSCLC including lung squamous carcinoma (LUSC) and lung adenocarcinoma (LUAD) patients with their clinical information were downloaded from The Cancer Genome Atlas (TCGA). Gene expression comparisons between tumor and normal samples were performed with edgeR package in R software and the results of the 83 peroxisome pathway genes were extracted. Through Venn diagram analysis, 38 common differentially expressed peroxisome pathway genes (C-DEPGs) in NSCLC were identified. Principal components analysis (PCA) was performed and the 38 C-DEPGs could discriminate NSCLC tumors from the non-tumor controls well. Through Kaplan-Meier survival and Cox regression analyses, 11 of the C-DEPGs were shown to have prognostic effects on NSCLC overall survival (OS) and were considered as key C-DEPGs (K-DEPGs). Through Oncomine, Human Protein Atlas (HPA) and the Clinical Proteomic Tumor Analysis Consortium (CPTAC), three K-DEPGs (HSD17B4, ACAA1, and PXMP4) were confirmed to be down-regulated in NSCLC at both mRNA and protein level. Their dy-regulation mechanisms were revealed through their correlations with their copy number variations and methylation status. Their potential functions in NSCLC were explored through their NSCLC-specific co-expression network analysis, their correlations with immune infiltrations, immunomodulator gene expressions, MKI67 expression and their associations with anti-cancer drug sensitivity. Our findings suggested that HSD17B4, ACAA1, and PXMP4 might be new markers for NSCLC diagnosis and prognosis and might provide new clues for NSCLC treatment.
Collapse
Affiliation(s)
- Xiuzhi Zhang
- Department of Pathology, Henan Medical College, Zhengzhou, China.,Institute of Cancer Research, Henan Medical College, Zhengzhou, China.,Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Hongmei Yang
- Department of Pathology, Henan Medical College, Zhengzhou, China.,Institute of Cancer Research, Henan Medical College, Zhengzhou, China
| | - Jinzhong Zhang
- Institute of Cancer Research, Henan Medical College, Zhengzhou, China
| | - Fenglan Gao
- Department of Pathology, Henan Medical College, Zhengzhou, China
| | - Liping Dai
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| |
Collapse
|
14
|
Barnard M, Mostaghel EA, Auchus RJ, Storbeck KH. The role of adrenal derived androgens in castration resistant prostate cancer. J Steroid Biochem Mol Biol 2020; 197:105506. [PMID: 31672619 PMCID: PMC7883395 DOI: 10.1016/j.jsbmb.2019.105506] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/17/2019] [Accepted: 10/22/2019] [Indexed: 01/02/2023]
Abstract
Castration resistant prostate cancer (CRPC) remains androgen dependant despite castrate levels of circulating testosterone following androgen deprivation therapy, the first line of treatment for advanced metstatic prostate cancer. CRPC is characterized by alterations in the expression levels of steroidgenic enzymes that enable the tumour to derive potent androgens from circulating adrenal androgen precursors. Intratumoral androgen biosynthesis leads to the localized production of both canonical androgens such as 5α-dihydrotestosterone (DHT) as well as less well characterized 11-oxygenated androgens, which until recently have been overlooked in the context of CRPC. In this review we discuss the contribution of both canonical and 11-oxygenated androgen precursors to the intratumoral androgen pool in CRPC. We present evidence that CRPC remains androgen dependent and discuss the alterations in steroidogenic enzyme expression and how these affect the various pathways to intratumoral androgen biosynthesis. Finally we summarize the current treatment strategies for targeting adrenal derived androgen biosynthesis.
Collapse
Affiliation(s)
- Monique Barnard
- Department of Biochemistry, Stellenbosch University, Stellenbosch, South Africa
| | - Elahe A Mostaghel
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA; Department of Medicine, University of Washington, Seattle, WA, USA; Geriatric Research, Education and Clinical Center, VA Puget Sound Health Care System, Seattle, WA, USA
| | - Richard J Auchus
- Division of Metabolism, Endocrinology and Diabetes, University of Michigan, Ann Arbor, MI, USA; Department of Pharmacology, University of Michigan, Ann Arbor, MI, USA
| | - Karl-Heinz Storbeck
- Department of Biochemistry, Stellenbosch University, Stellenbosch, South Africa.
| |
Collapse
|
15
|
Penning TM, Detlefsen AJ. Intracrinology-revisited and prostate cancer. J Steroid Biochem Mol Biol 2020; 196:105499. [PMID: 31614208 PMCID: PMC6954292 DOI: 10.1016/j.jsbmb.2019.105499] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 10/08/2019] [Indexed: 01/22/2023]
Abstract
The formation of steroid hormones in peripheral target tissues is referred to as their intracrine formation. This process occurs in hormone dependent malignancies such as prostate and breast cancer in which the disease can be either castrate resistant or occur post-menopausally, respectively. In these instances, the major precursor steroid of androgens and estrogens is dehydroepiandrosterone (DHEA) and DHEA-SO4. This article reviews the major pathways by which adrenal steroids are converted to the potent male sex hormones, testosterone (T) and 5α-dihydrotestosterone (5α-DHT) and the discrete enzyme isoforms involved in castration resistant prostate cancer. Previous studies have mainly utilized radiotracers to investigate these pathways but have not used prevailing concentrations of precursors found in castrate male human serum. In addition, the full power of stable-isotope dilution liquid chromatography tandem mass spectrometry has not been applied routinely. Furthermore, it is clear that adaptive responses occur in the transporters and enzyme isoforms involved in response to androgen deprivation therapy that need to be considered.
Collapse
Affiliation(s)
- Trevor M Penning
- Center of Excellence in Environmental Toxicology, Department of Systems Pharmacology & Translational Therapeutics, 421 Curie Blvd, 1350 BRBII/IIII, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104-6084, United States.
| | - Andrea J Detlefsen
- Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania School Philadelphia, PA, United States
| |
Collapse
|
16
|
Roberto D, Selvarajah S, Park PC, Berman D, Venkateswaran V. Functional validation of metabolic genes that distinguish Gleason 3 from Gleason 4 prostate cancer foci. Prostate 2019; 79:1777-1788. [PMID: 31503357 DOI: 10.1002/pros.23903] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 08/14/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Gleason grade is among the most powerful clinicopathological classification systems used to assess risk of lethal potential in prostate cancer, yet its biologic basis is poorly understood. Notably, pure low-grade cancers, comprised predominantly of Gleason pattern 3 (G3) are typically indolent, with lethal potential emerging with the progression of higher-grade Gleason patterns 4 (G4) or 5. One of the hallmarks of more aggressive cancer phenotypes is the stereotyped set of metabolic characteristics that transformed cells acquire to facilitate unregulated growth. In the present study, we profiled expression signatures of metabolic genes that are differentially expressed between G3 and G4 cancer foci and investigated the functional role of two of the profiled genes, PGRMC1 and HSD17B4, in prostate cancer cells. METHODS Gene expression profiling was conducted using 32 G3 and 32 G4 cancer foci from patients with 3+3 and ≥4+3 tumors, respectively. A 95-gene Nanostring probe set was used to probe genes associated with energy metabolism. Two out of five genes (PGRMC1 and HSD17B4) that significantly distinguish between G3 and G4 were functionally validated in vitro using established prostate cancer cells (PC3, DU145). Expression of PGRMC1 and HSD17B4 was knocked down and subsequent studies were performed to analyze cell proliferation, migration, invasion, and apoptosis. Mechanistic studies that explored the epidermal growth factor receptor (EGFR) pathway were performed by Western blot. RESULTS Multivariate analysis identified five metabolic genes that were differentially expressed between G3 and G4 stroma (P < .05). Functional validation studies revealed that knockdown of PGRMC1 and HSD17B4 significantly decreased cell proliferation, migration, and invasion, and increased apoptosis in PC3 and DU145 cells. Mechanistic studies showed that these effects, after PGRMC1 knockdown, were possibly mediated through alterations in downstream components of the EGFR, protein kinase B, and nuclear factor kappa-light-chain-enhancer of activated B cells pathways. CONCLUSION The following study provides evidence supporting the use of metabolic genes PGRMC1 and HSD17B4 as a prognostic biomarker for the distinction between G3 and G4 prostate cancers.
Collapse
Affiliation(s)
- Domenica Roberto
- Department of Surgery (Urology), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Shamini Selvarajah
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Ontario, Canada
| | - Paul C Park
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - David Berman
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
- Division of Cancer Biology and Genetics, Cancer Research Institute, Queen's University, Kingston, Ontario, Canada
| | - Vasundara Venkateswaran
- Department of Surgery (Urology), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| |
Collapse
|
17
|
Synthesis of Isoflavone–Amino-Acid Conjugates. Chem Nat Compd 2019. [DOI: 10.1007/s10600-019-02821-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
18
|
Gonthier K, Poluri RTK, Audet-Walsh É. Functional genomic studies reveal the androgen receptor as a master regulator of cellular energy metabolism in prostate cancer. J Steroid Biochem Mol Biol 2019; 191:105367. [PMID: 31051242 DOI: 10.1016/j.jsbmb.2019.04.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 04/15/2019] [Accepted: 04/17/2019] [Indexed: 12/19/2022]
Abstract
Sex-steroid hormones have been investigated for decades for their oncogenic properties in hormone-dependent cancers. The increasing body of knowledge on the biological actions of androgens in prostate cancer has led to the development of several targeted therapies that still represent the standard of care for cancer patients to this day. In the prostate, androgens promote cellular differentiation and proper tissue development. These hormones also promote the aberrant proliferation and survival of prostate cancer cells. Over the past few years, sequencing technologies for functional genomic analyses have rapidly expanded, revealing novel functions of sex-steroid hormone receptors other than their classic roles. In this article, we will focus on transcriptomic- and genomic-based evidence that demonstrates the importance of the androgen receptor signaling in the regulation of prostate cancer cell metabolism. This is significant because the reprogramming of cell metabolism is a hallmark of cancer. In fact, it is clear now that the androgen receptor contributes to the reprogramming of specific cellular metabolic pathways that promote tumor growth and disease progression, including aerobic glycolysis, mitochondrial respiration, fatty acid ß-oxidation, and de novo lipid synthesis. Overall, beyond regulating development, differentiation, and proliferation, the androgen receptor is also a master regulator of cellular energy metabolism.
Collapse
Affiliation(s)
- Kevin Gonthier
- Department of Molecular Medicine, Axe Endocrinologie - Néphrologie du Centre de recherche du CHU de Québec, Canada; Centre de recherche sur le cancer - Université Laval, Canada
| | - Raghavendra Tejo Karthik Poluri
- Department of Molecular Medicine, Axe Endocrinologie - Néphrologie du Centre de recherche du CHU de Québec, Canada; Centre de recherche sur le cancer - Université Laval, Canada
| | - Étienne Audet-Walsh
- Department of Molecular Medicine, Axe Endocrinologie - Néphrologie du Centre de recherche du CHU de Québec, Canada; Centre de recherche sur le cancer - Université Laval, Canada.
| |
Collapse
|
19
|
Can Lycopene Impact the Androgen Axis in Prostate Cancer?: A Systematic Review of Cell Culture and Animal Studies. Nutrients 2019; 11:nu11030633. [PMID: 30875962 PMCID: PMC6471887 DOI: 10.3390/nu11030633] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/08/2019] [Accepted: 03/11/2019] [Indexed: 01/23/2023] Open
Abstract
First-line therapy for advanced or metastatic prostate cancer (PCa) involves the removal of tumor-promoting androgens by androgen deprivation therapy (ADT), resulting in transient tumor regression. Recurrent disease is attributed to tumor adaptation to survive, despite lower circulating androgen concentrations, making the blockage of downstream androgen signaling a chemotherapeutic goal for PCa. Dietary intake of tomato and its predominant carotenoid, lycopene, reduce the risk for PCa, and preclinical studies have shown promising results that tomato and lycopene can inhibit androgen signaling in normal prostate tissue. The goal of this systematic review was to evaluate whether mechanistic evidence exists to support the hypothesis that tomato or lycopene interact with the androgen axis in PCa. Eighteen studies (n = 5 in vivo; n = 13 in vitro) were included in the final review. A formal meta-analysis was not feasible due to variability of the data; however, the overall estimated directions of effect for the compared studies were visually represented by albatross plots. All studies demonstrated either null or, more commonly, inhibitory effects of tomato or lycopene treatment on androgen-related outcomes. Strong mechanistic evidence was unable to be ascertained, but tomato and lycopene treatment appears to down-regulate androgen metabolism and signaling in PCa.
Collapse
|
20
|
Mostaghel EA. Alternative Acts: Oncogenic Splicing of Steroidogenic Enzymes in Prostate Cancer. Clin Cancer Res 2019; 25:1139-1141. [PMID: 30530817 DOI: 10.1158/1078-0432.ccr-18-3410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 11/20/2018] [Accepted: 12/04/2018] [Indexed: 11/16/2022]
Abstract
Castration-resistant prostate cancer is characterized by loss of the androgen inactivation enzyme HSD17B2, emphasizing the importance of intratumoral androgens in tumor progression. Inactive isoforms generated by alternative splicing destabilize the wild-type enzyme, adding steroidogenesis to other prostate cancer drivers that undergo oncogenic splicing, highlighting aberrant splicing as a therapeutic target.See related article by Gao et al., p. 1291.
Collapse
Affiliation(s)
- Elahe A Mostaghel
- Geriatric Research, Education and Clinical Center, VA Puget Sound Health Care System, Seattle, Washington. .,Fred Hutchinson Cancer Research Center, Seattle, Washington
| |
Collapse
|
21
|
Menor M, Zhu Y, Wang Y, Zhang J, Jiang B, Deng Y. Development of somatic mutation signatures for risk stratification and prognosis in lung and colorectal adenocarcinomas. BMC Med Genomics 2019; 12:24. [PMID: 30704450 PMCID: PMC6357362 DOI: 10.1186/s12920-018-0454-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Background Prognostic signatures are vital to precision medicine. However, development of somatic mutation prognostic signatures for cancers remains a challenge. In this study we developed a novel method for discovering somatic mutation based prognostic signatures. Results Somatic mutation and clinical data for lung adenocarcinoma (LUAD) and colorectal adenocarcinoma (COAD) from The Cancer Genome Atlas (TCGA) were randomly divided into training (n = 328 for LUAD and 286 for COAD) and validation (n = 167 for LUAD and 141 for COAD) datasets. A novel method of using the log2 ratio of the tumor mutation frequency to the paired normal mutation frequency is computed for each patient and missense mutation. The missense mutation ratios were mean aggregated into gene-level somatic mutation profiles. The somatic mutations were assessed using univariate Cox analysis on the LUAD and COAD training sets separately. Stepwise multivariate Cox analysis resulted in a final gene prognostic signature for LUAD and COAD. Performance was compared to gene prognostic signatures generated using the same pipeline but with different somatic mutation profile representations based on tumor mutation frequency, binary calls, and gene-gene network normalization. Signature high-risk LUAD and COAD cases had worse overall survival compared to the signature low-risk cases in the validation set (log-rank test p-value = 0.0101 for LUAD and 0.0314 for COAD) using mutation tumor frequency ratio (MFR) profiles, while all other methods, including gene-gene network normalization, have statistically insignificant stratification (log-rank test p-value ≥0.05). Most of the genes in the final gene signatures using MFR profiles are cancer-related based on network and literature analysis. Conclusions We demonstrated the robustness of MFR profiles and its potential to be a powerful prognostic tool in cancer. The results are robust according to validation testing and the selected genes are biologically relevant.
Collapse
Affiliation(s)
- Mark Menor
- Department of Complementary & Integrative Medicine, University of Hawaii John A. Burns School of Medicine, Honolulu, HI, USA
| | - Yong Zhu
- National Medical Centre of Colorectal Disease, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, People's Republic of China
| | - Yu Wang
- Department of Complementary & Integrative Medicine, University of Hawaii John A. Burns School of Medicine, Honolulu, HI, USA.,Department of Oncology, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210001, Jiangsu Province, China
| | - Jicai Zhang
- Department of Laboratory Medicine, Shiyan Taihe Hospital, College of Biomedical Engineering, Hubei University of Medicine, Shiyan, Hubei, 442000, People's Republic of China
| | - Bin Jiang
- National Medical Centre of Colorectal Disease, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, People's Republic of China.
| | - Youping Deng
- Department of Complementary & Integrative Medicine, University of Hawaii John A. Burns School of Medicine, Honolulu, HI, USA.
| |
Collapse
|
22
|
Olender J, Lee NH. Role of Alternative Splicing in Prostate Cancer Aggressiveness and Drug Resistance in African Americans. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1164:119-139. [PMID: 31576545 PMCID: PMC6777849 DOI: 10.1007/978-3-030-22254-3_10] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Alternative splicing, the process of removing introns and joining exons of pre-mRNA, is critical for growth, development, tissue homeostasis, and species diversity. Dysregulation of alternative splicing can initiate and drive disease. Aberrant alternative splicing has been shown to promote the "hallmarks of cancer" in both hematological and solid cancers. Of interest, recent work has focused on the role of alternative splicing in prostate cancer and prostate cancer health disparities. We will provide a review of prostate cancer health disparities involving the African American population, alternative RNA splicing, and alternative splicing in prostate cancer. Lastly, we will summarize our work on differential alternative splicing in prostate cancer disparities and its implications for disparate health outcomes and therapeutic targets.
Collapse
Affiliation(s)
- Jacqueline Olender
- Department of Pharmacology and Physiology, GW Cancer Center, George Washington University School of Medicine and Health Sciences, Washington, DC, USA
| | - Norman H Lee
- Department of Pharmacology and Physiology, GW Cancer Center, George Washington University School of Medicine and Health Sciences, Washington, DC, USA.
| |
Collapse
|
23
|
Storbeck KH, Mostaghel EA. Canonical and Noncanonical Androgen Metabolism and Activity. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1210:239-277. [PMID: 31900912 DOI: 10.1007/978-3-030-32656-2_11] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Androgens are critical drivers of prostate cancer. In this chapter we first discuss the canonical pathways of androgen metabolism and their alterations in prostate cancer progression, including the classical, backdoor and 5α-dione pathways, the role of pre-receptor DHT metabolism, and recent findings on oncogenic splicing of steroidogenic enzymes. Next, we discuss the activity and metabolism of non-canonical 11-oxygenated androgens that can activate wild-type AR and are less susceptible to glucuronidation and inactivation than the canonical androgens, thereby serving as an under-recognized reservoir of active ligands. We then discuss an emerging literature on the potential non-canonical role of androgen metabolizing enzymes in driving prostate cancer. We conclude by discussing the potential implications of these findings for prostate cancer progression, particularly in context of new agents such as abiraterone and enzalutamide, which target the AR-axis for prostate cancer therapy, including mechanisms of response and resistance and implications of these findings for future therapy.
Collapse
Affiliation(s)
- Karl-Heinz Storbeck
- Department of Biochemistry, Stellenbosch University, Stellenbosch, South Africa
| | - Elahe A Mostaghel
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA. .,Department of Medicine, University of Washington, Seattle, WA, USA. .,Geriatric Research, Education and Clinical Center S-182, VA Puget Sound Health Care System, Seattle, WA, USA.
| |
Collapse
|
24
|
Barnard M, Quanson JL, Mostaghel E, Pretorius E, Snoep JL, Storbeck KH. 11-Oxygenated androgen precursors are the preferred substrates for aldo-keto reductase 1C3 (AKR1C3): Implications for castration resistant prostate cancer. J Steroid Biochem Mol Biol 2018; 183:192-201. [PMID: 29936123 PMCID: PMC6283102 DOI: 10.1016/j.jsbmb.2018.06.013] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 06/19/2018] [Accepted: 06/20/2018] [Indexed: 01/13/2023]
Abstract
The progression of castration resistant prostate cancer (CRPC) is driven by the intratumoral conversion of adrenal androgen precursors to potent androgens. The expression of aldo-keto reductase 1C3 (AKR1C3), which catalyses the reduction of weak androgens to more potent androgens, is significantly increased in CRPC tumours. The oxidation of androgens to their inactive form is catalysed by 17β-hydroxysteroid dehydrogenase type 2 (17βHSD2), but little attention is given to the expression levels of this enzyme. In this study, we show that the 11-oxygenated androgen precursors of adrenal origin are the preferred substrate for AKR1C3. In particular we show that the enzymatic efficiency of AKR1C3 is 8- and 24-fold greater for 11-ketoandrostenedione than for the classic substrates androstenedione and 5α-androstanedione, respectively. Using three independent experimental systems and a computational model we subsequently show that increased ratios of AKR1C3:17βHSD2 significantly favours the flux through the 11-oxygenated androgen pathway as compared to the classical or 5α-androstanedione pathways. Our findings reveal that the flux through the classical and 5α-androstanedione pathways are limited by the low catalytic efficiently of AKR1C3 towards classical androgens combined with the high catalytic efficiency of 17βHSD2, and that the expression of the oxidative enzyme therefore plays a vital role in determining the steady state concentration of active androgens. Using microarray data from prostate tissue we confirm that the AKR1C3:17βHSD2 ratio is significantly increased in patients undergoing androgen deprivation therapy as compared to benign tissue, and further increased in patients with CRPC. Taken together this study therefore demonstrates that the ratio of AKR1C3:17βHSD2 is more important than AKR1C3 expression alone in determining intratumoral androgen levels and that 11-oxygenated androgens may play a bigger role in CRPC than previously anticipated.
Collapse
Affiliation(s)
- Monique Barnard
- Department of Biochemistry, Stellenbosch University, Stellenbosch, South Africa
| | - Jonathan L Quanson
- Department of Biochemistry, Stellenbosch University, Stellenbosch, South Africa
| | | | - Elzette Pretorius
- Department of Biochemistry, Stellenbosch University, Stellenbosch, South Africa
| | - Jacky L Snoep
- Department of Biochemistry, Stellenbosch University, Stellenbosch, South Africa; Department of Molecular Cell Physiology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands; MIB, University of Manchester, Manchester, UK
| | - Karl-Heinz Storbeck
- Department of Biochemistry, Stellenbosch University, Stellenbosch, South Africa.
| |
Collapse
|
25
|
Toren P, Hoffman A, Ding K, Joncas FH, Turcotte V, Caron P, Pouliot F, Fradet Y, Lévesque É, Guillemette C, Klotz L. Serum Sex Steroids as Prognostic Biomarkers in Patients Receiving Androgen Deprivation Therapy for Recurrent Prostate Cancer: A Post Hoc Analysis of the PR.7 Trial. Clin Cancer Res 2018; 24:5305-5312. [DOI: 10.1158/1078-0432.ccr-18-1187] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 06/11/2018] [Accepted: 07/11/2018] [Indexed: 11/16/2022]
|
26
|
Kaochar S, Mitsiades N. A Novel Mechanism to Drive Castration-Resistant Prostate Cancer. Trends Endocrinol Metab 2018; 29:366-368. [PMID: 29605661 PMCID: PMC5960430 DOI: 10.1016/j.tem.2018.03.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 03/12/2018] [Indexed: 11/22/2022]
Abstract
Androgen receptor signaling is critical for prostate adenocarcinoma, even after androgen deprivation therapy. Persistence of intratumoral androgens has been found in castration-resistant prostate cancer and attributed to increased in situ synthesis. Recently, Sharifi and colleagues reported an additional mechanism that can enhance local androgenic exposure: downregulation of an androgen-inactivating enzyme.
Collapse
Affiliation(s)
- Salma Kaochar
- Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA; Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Nicholas Mitsiades
- Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA; Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA.
| |
Collapse
|
27
|
Ishikawa K, Tanaka A, Kogame A, Watanabe T, Tagawa Y, Matsui H. Usefulness of pharmacokinetic/efficacy analysis of an investigational kisspeptin analog, TAK-448, in quantitatively evaluating anti-tumor growth effect in the rat VCaP androgen-sensitive prostate cancer model. Eur J Pharmacol 2018; 828:126-134. [DOI: 10.1016/j.ejphar.2018.03.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 03/14/2018] [Accepted: 03/20/2018] [Indexed: 01/08/2023]
|
28
|
Mohler JL. A brief history of intracrine androgen metabolism by castration-recurrent prostate cancer. AMERICAN JOURNAL OF CLINICAL AND EXPERIMENTAL UROLOGY 2018; 6:101-106. [PMID: 29666838 PMCID: PMC5902728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 03/21/2018] [Indexed: 06/08/2023]
Abstract
This mini-review describes the evolution of the concept of intracrine androgen metabolism by prostate cancer during androgen deprivation therapy. Persistence of androgen receptor protein in the face of castrate circulating levels of testosterone could not be explained fully by hypersensitization or mutation of the androgen receptor. The hypothesis that castration-recurrent prostate cancer produced its own testosterone was proven using radioimmunoassay and mass spectrometry methods adopted for use in prostate tissue. Intracrine synthesis of testicular androgens led to FDA approval of abiraterone, an inhibitor of androgen metabolism. Further understanding of intracrine androgen metabolism may allow the development of more targeted agents that perform better and do not require co-administration of prednisone that may extend survival and diminish side effects from treatment of advanced prostate cancer.
Collapse
Affiliation(s)
- James L Mohler
- Department of Urology, Roswell Park Comprehensive Cancer CenterBuffalo, NY, USA
- University of North Carolina Lineberger Comprehensive Cancer CenterChapel Hill, NC, USA
| |
Collapse
|
29
|
Zhang B, Chen X, Zhou Q, Song Y, Sun S, Cheng H. Human gene expression microarray analysis of the HPV 6bE7-HaCaT stable cell line. Gene 2018; 657:60-68. [PMID: 29501815 DOI: 10.1016/j.gene.2018.02.067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 02/27/2018] [Indexed: 10/17/2022]
Abstract
OBJECTIVE Human papillomavirus (HPV) is the most common sexually transmitted agent in the world. HPV6b is a low-risk type of HPVs that causes benign verrucous hyperplastic lesions of the skin and anal genital mucosa. Previous research has indicated that HPV genotype 6 is sometimes associated with high-grade lesions and anal cancer. The pathogenesis of low-risk HPV infection and its relationship to high-risk HPV is not clear at present. The E7 protein, which is encoded by HPV early -expressing genes, plays an important role in HPV infection. The aim of this study is to investigate the human gene expression signature of the HPV6b E7-transfected HaCaT stable cell line. The identification of differentially expressed genes might provide a more comprehensive understanding of HPV6b infection and will allow us to explore the specific role of E7 protein. METHODS We established a stable cell line transfected with the HPV6b E7 gene and analyzed the line's genome-wide expression profile by microarray. Quantitative real-time PCR (qRT-PCR) was used to verify the differentially expressed genes. GO enrichment analysis was applied for gene annotation according to functions. KEGG analysis, a system for analyzing gene function and genome information, was used to help us integrate differentially expressed genes into pathways. RESULTS A total of 3519 genes were identified to be significantly differentially expressed between the HPV 6bE7-HaCaT stable cell line and a control cell line, among which 1884 genes were up-regulated and 1635 genes were down-regulated with a fold-change > 2.0 between the two groups. The expression profiles of the top 20 up-regulated and the top 20 down-regulated genes in the HPV 6bE7-HaCaT stable cell line as analyzed by qRT-PCR were consistent with the microarray data. The most significantly enhanced genes HPV 6bE7-HaCaT cells were SIMC1, S100A8 and S100A9, whereas PXDN expression was markedly down-regulated. GO analysis showed that HPV 6bE7 primarily affected biological processes and that the most significant difference was in heart induction (GO:0003129). Many differentially expressed genes were linked to histone H4-K20 demethylation (GO:0035574). KEGG analysis showed that the most significant changes in gene expression were related to primary bile acid biosynthesis, and the most diverse biological processes were related to systemic lupus erythematosus pathogenesis. CONCLUSIONS The global gene expression profile of the HPV 6bE7-HaCaT stable cell line was analyzed, revealing the genes regulated by E7 protein and providing insight into the pathogenesis of HPV6b infection.
Collapse
Affiliation(s)
- Boya Zhang
- Department of Dermatology, Sir Run Run Shaw Hospital, Zhejiang University, School of Medicine, China
| | - Xianzhen Chen
- Department of Dermatology, Sir Run Run Shaw Hospital, Zhejiang University, School of Medicine, China
| | - Qiang Zhou
- Department of Dermatology, Sir Run Run Shaw Hospital, Zhejiang University, School of Medicine, China
| | - Yinjing Song
- Department of Dermatology, Sir Run Run Shaw Hospital, Zhejiang University, School of Medicine, China
| | - Siyuan Sun
- Department of Dermatology, Sir Run Run Shaw Hospital, Zhejiang University, School of Medicine, China
| | - Hao Cheng
- Department of Dermatology, Sir Run Run Shaw Hospital, Zhejiang University, School of Medicine, China.
| |
Collapse
|