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Gilyazova I, Ivanova E, Gupta H, Mustafin A, Ishemgulov R, Izmailov A, Gilyazova G, Pudova E, Pavlov V, Khusnutdinova E. miRNA Expression Patterns in Early- and Late-Stage Prostate Cancer Patients: High-Throughput Analysis. Biomedicines 2023; 11:3073. [PMID: 38002073 PMCID: PMC10669269 DOI: 10.3390/biomedicines11113073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/09/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023] Open
Abstract
Prostate cancer (PCa) is one of the most common types of cancer among men. To date, there have been no specific markers identified for the diagnosis and prognosis or response to treatment of this disease. Thus, there is an urgent need for promising markers, which may be fulfilled by small non-coding RNAs known as microRNAs (miRNAs). Therefore, the present study aimed to investigate the miRNA profile in tissue samples obtained from patients with PCa using microarrays, followed by reverse transcriptase quantitative PCRs (RT-qPCRs). In the discovery phase, 754 miRNAs were screened in tissues obtained from patients (n = 46) with PCa in early and late stages. Expression levels of miRNA-324-3p, miRNA-429, miRNA-570, and miRNA-616 were found to be downregulated, and miRNA-423-5p expression was upregulated in patients with early-stage cancer compared to the late-stage ones. These five miRNAs were further validated in an independent cohort of samples (n = 39) collected from patients with PCa using RT-qPCR-based assays. MiRNA-324-3p, miRNA-429, miRNA-570, and miRNA-616 expression levels remained significantly downregulated in early-stage cancer tissues compared to late-stage tissues. Remarkably, for a combination of three miRNAs, PSA levels and Gleason scores were able to discriminate between patients with early-stage PCa and late-stage PCa, with an AUC of 95%, a sensitivity of 86%, and a specificity close to 94%. Thus, the data obtained in this study suggest a possible involvement of the identified miRNAs in the pathogenesis of PCa, and they may also have the potential to be developed into diagnostic and prognostic tools for PCa. However, further studies with a larger cohort are needed.
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Affiliation(s)
- Irina Gilyazova
- Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, Institute of Biochemistry and Genetics, 450054 Ufa, Russia; (E.I.)
- Institute of Urology and Clinical Oncology, Department of Medical Genetics and Fundamental Medicine, Bashkir State Medical University, 450008 Ufa, Russia
| | - Elizaveta Ivanova
- Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, Institute of Biochemistry and Genetics, 450054 Ufa, Russia; (E.I.)
- Biology Department, St. Petersburg State University, 199034 Saint-Petersburg, Russia
| | - Himanshu Gupta
- Department of Biotechnology, Institute of Applied Sciences and Humanities, GLA University, Mathura 281406, India;
| | - Artur Mustafin
- Institute of Urology and Clinical Oncology, Department of Medical Genetics and Fundamental Medicine, Bashkir State Medical University, 450008 Ufa, Russia
| | - Ruslan Ishemgulov
- Institute of Urology and Clinical Oncology, Department of Medical Genetics and Fundamental Medicine, Bashkir State Medical University, 450008 Ufa, Russia
| | - Adel Izmailov
- Institute of Urology and Clinical Oncology, Department of Medical Genetics and Fundamental Medicine, Bashkir State Medical University, 450008 Ufa, Russia
| | - Gulshat Gilyazova
- Institute of Urology and Clinical Oncology, Department of Medical Genetics and Fundamental Medicine, Bashkir State Medical University, 450008 Ufa, Russia
| | - Elena Pudova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Valentin Pavlov
- Institute of Urology and Clinical Oncology, Department of Medical Genetics and Fundamental Medicine, Bashkir State Medical University, 450008 Ufa, Russia
| | - Elza Khusnutdinova
- Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, Institute of Biochemistry and Genetics, 450054 Ufa, Russia; (E.I.)
- Institute of Urology and Clinical Oncology, Department of Medical Genetics and Fundamental Medicine, Bashkir State Medical University, 450008 Ufa, Russia
- Biology Department, St. Petersburg State University, 199034 Saint-Petersburg, Russia
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2
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Huang HP, Chen CH, Chang KH, Lee MS, Lee CF, Chao YH, Lu SY, Wu TF, Liang ST, Lin CY, Lin YC, Liu SP, Lu YC, Shun CT, Huang WJ, Lin TP, Ku MH, Chung HJ, Chang YH, Liao CH, Yu CC, Chung SD, Tsai YC, Wu CC, Chen KC, Ho CH, Hsiao PW, Pu YS. Prediction of clinically significant prostate cancer through urine metabolomic signatures: A large-scale validated study. J Transl Med 2023; 21:714. [PMID: 37821919 PMCID: PMC10566053 DOI: 10.1186/s12967-023-04424-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 08/07/2023] [Indexed: 10/13/2023] Open
Abstract
PURPOSE Currently, there are no accurate markers for predicting potentially lethal prostate cancer (PC) before biopsy. This study aimed to develop urine tests to predict clinically significant PC (sPC) in men at risk. METHODS Urine samples from 928 men, namely, 660 PC patients and 268 benign subjects, were analyzed by gas chromatography/quadrupole time-of-flight mass spectrophotometry (GC/Q-TOF MS) metabolomic profiling to construct four predictive models. Model I discriminated between PC and benign cases. Models II, III, and GS, respectively, predicted sPC in those classified as having favorable intermediate risk or higher, unfavorable intermediate risk or higher (according to the National Comprehensive Cancer Network risk groupings), and a Gleason sum (GS) of ≥ 7. Multivariable logistic regression was used to evaluate the area under the receiver operating characteristic curves (AUC). RESULTS In Models I, II, III, and GS, the best AUCs (0.94, 0.85, 0.82, and 0.80, respectively; training cohort, N = 603) involved 26, 24, 26, and 22 metabolites, respectively. The addition of five clinical risk factors (serum prostate-specific antigen, patient age, previous negative biopsy, digital rectal examination, and family history) significantly improved the AUCs of the models (0.95, 0.92, 0.92, and 0.87, respectively). At 90% sensitivity, 48%, 47%, 50%, and 36% of unnecessary biopsies could be avoided. These models were successfully validated against an independent validation cohort (N = 325). Decision curve analysis showed a significant clinical net benefit with each combined model at low threshold probabilities. Models II and III were more robust and clinically relevant than Model GS. CONCLUSION This urine test, which combines urine metabolic markers and clinical factors, may be used to predict sPC and thereby inform the necessity of biopsy in men with an elevated PC risk.
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Affiliation(s)
- Hsiang-Po Huang
- Graduate Institute of Medical Genomics and Proteomics, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chung-Hsin Chen
- Department of Urology, National Taiwan University College of Medicine and Hospital, 7 Zhongshan South Road, Taipei, 100225, Taiwan, Republic of China
| | - Kai-Hsiung Chang
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, Taiwan
| | - Ming-Shyue Lee
- Department of Biochemistry and Molecular Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Cheng-Fan Lee
- Department of Biochemistry and Molecular Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yen-Hsiang Chao
- Department of Urology, National Taiwan University College of Medicine and Hospital, 7 Zhongshan South Road, Taipei, 100225, Taiwan, Republic of China
| | - Shih-Yu Lu
- Department of Urology, National Taiwan University College of Medicine and Hospital, 7 Zhongshan South Road, Taipei, 100225, Taiwan, Republic of China
| | - Tzu-Fan Wu
- Department of Urology, National Taiwan University College of Medicine and Hospital, 7 Zhongshan South Road, Taipei, 100225, Taiwan, Republic of China
| | - Sung-Tzu Liang
- Department of Urology, National Taiwan University College of Medicine and Hospital, 7 Zhongshan South Road, Taipei, 100225, Taiwan, Republic of China
| | - Chih-Yu Lin
- Agricultural Biotechnology Research Center, Academia Sinica, No. 128, Sec. 2, Academia Road, Nankang, Taipei, 11529, Taiwan
| | - Yuan Chi Lin
- Department of Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Shih-Ping Liu
- Department of Urology, National Taiwan University College of Medicine and Hospital, 7 Zhongshan South Road, Taipei, 100225, Taiwan, Republic of China
| | - Yu-Chuan Lu
- Department of Urology, National Taiwan University College of Medicine and Hospital, 7 Zhongshan South Road, Taipei, 100225, Taiwan, Republic of China
- Department of Surgical Oncology, National Taiwan University Cancer Center, Taipei, Taiwan
| | - Chia-Tung Shun
- Department of Pathology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - William J Huang
- Department of Urology, Taipei Veterans General Hospital, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Tzu-Ping Lin
- Department of Urology, Taipei Veterans General Hospital, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Ming-Hsuan Ku
- Department of Urology, Taipei Veterans General Hospital, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Hsiao-Jen Chung
- Department of Urology, Taipei Veterans General Hospital, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Yen-Hwa Chang
- Department of Urology, Taipei Veterans General Hospital, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chun-Hou Liao
- Division of Urology, Department of Surgery, Cardinal Tien Hospital, New Taipei City, Taiwan
- School of Medicine, College of Medicine, Fu-Jen Catholic University, New Taipei City, Taiwan
| | - Chih-Chin Yu
- Division of Urology, Department of Surgery, Taipei Tzu Chi Hospital, and the Buddhist Tzu Chi Medical Foundation, College of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Shiu-Dong Chung
- Division of Urology, Department of Surgery, Far Eastern Memorial Hospital, and Department of Nursing, College of Healthcare & Management, Asia Eastern University of Science and Technology, New Taipei City, Taiwan
| | - Yao-Chou Tsai
- Department of Medicine & Division of Urology, Taipei Tzu Chi Hospital, New Taipei City, Taiwan
| | - Chia-Chang Wu
- Department of Urology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Urology, Shuang-Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei, Taiwan
| | - Kuan-Chou Chen
- Department of Urology, Shuang-Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei, Taiwan
- Graduate Institute of Clinical Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chen-Hsun Ho
- School of Medicine, College of Medicine, Fu-Jen Catholic University, New Taipei City, Taiwan
- Division of Urology, Department of Surgery, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | - Pei-Wen Hsiao
- Agricultural Biotechnology Research Center, Academia Sinica, No. 128, Sec. 2, Academia Road, Nankang, Taipei, 11529, Taiwan.
| | - Yeong-Shiau Pu
- Department of Urology, National Taiwan University College of Medicine and Hospital, 7 Zhongshan South Road, Taipei, 100225, Taiwan, Republic of China.
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Alvarez-Cubero MJ, Arance E, de Santiago E, Sanchez P, Sepúlveda MR, Marrero R, Lorente JA, Gonzalez-Cabezuelo JM, Cuenca-Lopez S, Cozar JM, Vazquez-Alonso F, Martinez-Gonzalez LJ. Follow-Up Biomarkers in the Evolution of Prostate Cancer, Levels of S100A4 as a Detector in Plasma. Int J Mol Sci 2022; 24:ijms24010547. [PMID: 36613987 PMCID: PMC9820153 DOI: 10.3390/ijms24010547] [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: 10/28/2022] [Revised: 11/30/2022] [Accepted: 12/01/2022] [Indexed: 12/30/2022] Open
Abstract
The management and screening of prostate cancer (PC) is still the main problem in clinical practice. In this study, we investigated the role of aggressiveness genetic markers for PC stratification. We analyzed 201 plasma samples from PC patients and controls by digital PCR. For selection and validation, 26 formalin-fixed paraffin-embedded tissues, 12 fresh tissues, and 24 plasma samples were characterized by RNA-Seq, immunochemistry, immunofluorescence, Western blot, and extracellular-vesicles analyses. We identified three novel non-invasive biomarkers; all with an increased expression pattern in patients (PCA3: p = 0.002, S100A4: p ≤ 0.0001 and MRC2: p = 0.005). S100A4 presents the most informative AUC (area under the curve) (0.735). Combination of S100A4, MRC2, and PCA3 increases the discriminatory power between patients and controls and between different more and less aggressive stages (AUC = 0.761, p ≤ 0.0001). However, although a sensitivity of 97.47% in PCA3 and a specificity of 90.32% in S100A4 was reached, the detection signal level could be variable in some analyses owing to tumor heterogeneity. This is the first time that the role of S100A4 and MRC2 has been described in PC aggressiveness. Moreover, the combination of S100A4, MRC2, and PCA3 has never been described as a non-invasive biomarker for PC screening and aggressiveness.
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Affiliation(s)
- Maria Jesus Alvarez-Cubero
- GENYO, Centre for Genomics and Oncological Research: Pfizer, University of Granada, Andalusian Regional Government, Genomics Unit, PTS Granada, Avenida de la Ilustración 114, 18016 Granada, Spain
- Nutrition, Diet and Risk Assessment Group, Bio-Health Research Institute (Instituto de Investigación Biosanitaria ibs.GRANADA), Avenida de las Fuerzas Armadas 2, 18014 Granada, Spain
- Department of Biochemistry and Molecular Biology III, Faculty of Medicine, University of Granada, PTS Granada, 18016 Granada, Spain
| | - Elena Arance
- GENYO, Centre for Genomics and Oncological Research: Pfizer, University of Granada, Andalusian Regional Government, Genomics Unit, PTS Granada, Avenida de la Ilustración 114, 18016 Granada, Spain
| | - Esperanza de Santiago
- GENYO, Centre for Genomics and Oncological Research: Pfizer, University of Granada, Andalusian Regional Government, Genomics Unit, PTS Granada, Avenida de la Ilustración 114, 18016 Granada, Spain
| | - Pilar Sanchez
- Department of Biochemistry and Molecular Biology III, Faculty of Medicine, University of Granada, PTS Granada, 18016 Granada, Spain
| | - Maria Rosario Sepúlveda
- Department of Cell Biology, Faculty of Sciences, University of Granada, Avenida de la Fuente Nueva S/N CP, 18071 Granada, Spain
| | - Raquel Marrero
- GENYO, Centre for Genomics and Oncological Research: Pfizer, University of Granada, Andalusian Regional Government, Genomics Unit, PTS Granada, Avenida de la Ilustración 114, 18016 Granada, Spain
| | - Jose Antonio Lorente
- GENYO, Centre for Genomics and Oncological Research: Pfizer, University of Granada, Andalusian Regional Government, Genomics Unit, PTS Granada, Avenida de la Ilustración 114, 18016 Granada, Spain
- Department of Legal Medicine and Toxicology, Faculty of Medicine, University of Granada, PTS Granada, 18016 Granada, Spain
| | | | - Sergio Cuenca-Lopez
- GENYO, Centre for Genomics and Oncological Research: Pfizer, University of Granada, Andalusian Regional Government, Genomics Unit, PTS Granada, Avenida de la Ilustración 114, 18016 Granada, Spain
- Department of Biochemistry and Molecular Biology III, Faculty of Medicine, University of Granada, PTS Granada, 18016 Granada, Spain
| | - Jose Manuel Cozar
- Urology Department, Virgen de las Nieves Hospital, 18014 Granada, Spain
| | | | - Luis Javier Martinez-Gonzalez
- GENYO, Centre for Genomics and Oncological Research: Pfizer, University of Granada, Andalusian Regional Government, Genomics Unit, PTS Granada, Avenida de la Ilustración 114, 18016 Granada, Spain
- Correspondence: ; Tel.: +34-958-715-500 (ext. 108); Fax: +34-958-637-071
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4
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Pasetto S, Enderling H, Gatenby RA, Brady-Nicholls R. Intermittent Hormone Therapy Models Analysis and Bayesian Model Comparison for Prostate Cancer. Bull Math Biol 2021; 84:2. [PMID: 34797430 PMCID: PMC8604892 DOI: 10.1007/s11538-021-00953-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 09/27/2021] [Indexed: 11/26/2022]
Abstract
The prostate is an exocrine gland of the male reproductive system dependent on androgens (testosterone and dihydrotestosterone) for development and maintenance. First-line therapy for prostate cancer includes androgen deprivation therapy (ADT), depriving both the normal and malignant prostate cells of androgens required for proliferation and survival. A significant problem with continuous ADT at the maximum tolerable dose is the insurgence of cancer cell resistance. In recent years, intermittent ADT has been proposed as an alternative to continuous ADT, limiting toxicities and delaying time-to-progression. Several mathematical models with different biological resistance mechanisms have been considered to simulate intermittent ADT response dynamics. We present a comparison between 13 of these intermittent dynamical models and assess their ability to describe prostate-specific antigen (PSA) dynamics. The models are calibrated to longitudinal PSA data from the Canadian Prospective Phase II Trial of intermittent ADT for locally advanced prostate cancer. We perform Bayesian inference and model analysis over the models’ space of parameters on- and off-treatment to determine each model’s strength and weakness in describing the patient-specific PSA dynamics. Additionally, we carry out a classical Bayesian model comparison on the models’ evidence to determine the models with the highest likelihood to simulate the clinically observed dynamics. Our analysis identifies several models with critical abilities to disentangle between relapsing and not relapsing patients, together with parameter intervals where the critical points’ basin of attraction might be exploited for clinical purposes. Finally, within the Bayesian model comparison framework, we identify the most compelling models in the description of the clinical data.
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Affiliation(s)
- S Pasetto
- Department of Integrated Mathematical Oncology, H. Lee Moffitt Cancer and Research Institute, 12902 Magnolia Drive, Tampa, FL, 33612, USA.
| | - H Enderling
- Department of Integrated Mathematical Oncology, H. Lee Moffitt Cancer and Research Institute, 12902 Magnolia Drive, Tampa, FL, 33612, USA.,Department of Radiation Oncology, H. Lee Moffitt Cancer and Research Institute, 12902 Magnolia Drive, Tampa, FL, 33612, USA.,Department of Genitourinary Oncology, H. Lee Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, FL, 33612, USA
| | - R A Gatenby
- Department of Integrated Mathematical Oncology, H. Lee Moffitt Cancer and Research Institute, 12902 Magnolia Drive, Tampa, FL, 33612, USA.,Department of Radiology, H. Lee Moffitt Cancer and Research Institute, 12902 Magnolia Drive, Tampa, FL, 33612, USA
| | - R Brady-Nicholls
- Department of Integrated Mathematical Oncology, H. Lee Moffitt Cancer and Research Institute, 12902 Magnolia Drive, Tampa, FL, 33612, USA.
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5
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García-Perdomo HA, Gómez-Ospina JC, Chaves-Medina MJ, Sierra JM, Gómez AMA, Rivas JG. Impact of lifestyle in prostate cancer patients. What should we do? Int Braz J Urol 2021; 48:244-262. [PMID: 34472770 PMCID: PMC8932020 DOI: 10.1590/s1677-5538.ibju.2021.0297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 05/20/2021] [Indexed: 12/24/2022] Open
Abstract
Objective: This review aimed to analyze interventions raised within primary and tertiary prevention concerning the disease's incidence, progression, and recurrence of Prostate Cancer (PCa). Priority was given to the multidisciplinary approach of PCa patients with an emphasis on modifiable risk factors. Materials and Methods: We conducted a comprehensive literature review in the following databases: Embase, Central, and Medline. We included the most recent evidence assessing cohort studies, case-control studies, clinical trials, and systematic reviews published in the last five years. We only included studies in adults and in vitro or cell culture studies. The review was limited to English and Spanish articles. Results: Preventive interventions at all levels are the cornerstone of adherence to disease treatment and progression avoidance. The relationship in terms of healthy lifestyles is related to greater survival. The risk of developing cancer is associated to different eating habits, determined by geographic variations, possibly related to different genetic susceptibilities. Discussion: PCa is the second most common cancer in men, representing a leading cause of death among men in Latin America. Prevention strategies and healthy lifestyles are associated with higher survival rates in PCa patients. Also, screening for anxiety and the presence of symptoms related to mood disorders is essential in the patient's follow-up concerning their perception of the condition.
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Affiliation(s)
- Herney Andrés García-Perdomo
- Division of Urology/Uroooncology, Department of Surgery, School of Medicine, Universidad Del Valle, Cali, Colombia.,UROGIV Research Group, School of Medicine, Universidad Del Valle, Cali, Colombia
| | | | | | | | | | - Juan Gómez Rivas
- Department of Urology, Hospital Clínico San Carlos, Madrid, Spain
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6
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Novel Prostate Cancer Biomarkers: Aetiology, Clinical Performance and Sensing Applications. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9080205] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The review initially provides a short introduction to prostate cancer (PCa) incidence, mortality, and diagnostics. Next, the need for novel biomarkers for PCa diagnostics is briefly discussed. The core of the review provides details about PCa aetiology, alternative biomarkers available for PCa diagnostics besides prostate specific antigen and their biosensing. In particular, low molecular mass biomolecules (ions and metabolites) and high molecular mass biomolecules (proteins, RNA, DNA, glycoproteins, enzymes) are discussed, along with clinical performance parameters.
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7
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Xue P, Yan M, Wang K, Gu J, Zhong B, Tu C. Up-Regulation of LINC00665 Facilitates the Malignant Progression of Prostate Cancer by Epigenetically Silencing KLF2 Through EZH2 and LSD1. Front Oncol 2021; 11:639060. [PMID: 34094920 PMCID: PMC8173224 DOI: 10.3389/fonc.2021.639060] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 03/22/2021] [Indexed: 12/27/2022] Open
Abstract
This study aimed to explore the function of LINC00665 on the proliferation and metastasis of prostate cancer (PCa), and the potential regulatory mechanisms were also investigated. The expression level of LINC00665 in 50 pairs of PCa tissues and adjacent ones was studied by qRT-PCR, and the associations between LINC00665 and clinicopathological characteristics of PCa patients were analyzed. Control group (sh-NC) and LINC00665 knock-down group (sh-LINC00665) were set in 22RV1 and DU145 cells, respectively. The biological functions of LINC00665 in PCa cell lines were assessed by CCK-8, EdU, Transwell assays, and the nude mouse xenograft model was used to evaluate the tumorigenicity in vivo. In addition, qRT-PCR, Western Blot, RIP and ChIP assays were also used to determine the regulation mechanism of LINC00665 in PCa cell lines. In this study, our results showed that LINC00665 expression level in PCa cancer tissues was significantly up-regulated, compared with that in adjacent ones. Besides, similar results were found in PCa cell lines. Knock-down of LINC00665 significantly attenuated the proliferation and migration ability in 22RV1 and DU145 cells, compared to sh-NC. Mechanically, LINC00665 could interact with EZH2 and LSD1, recruiting them to KLF2 promoter region to inhibit its transcription. Moreover, the tumor-suppressive effects mediated by sh-LINC00665 were significantly reversed through the down-regulation of KLF2. Also, the suppression of LINC00665 impaired tumor growth of PCa in vivo. In summary, LINC00665 exerted the oncogenic functions in PCa cell lines by epigenetically silencing KLF2 expression by binding to EZH2 and LSD1, illuminating a novel mechanism of LINC00665 in the malignant progression of PCa and furnishing a prospective therapeutic biomarker to combat PCa.
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Affiliation(s)
- Peng Xue
- Department of Urology, The First People's Hospital of Lianyungang, Lianyungang Clinical Medical College of Nanjing Medical University, Lianyungang, China
| | - Miao Yan
- Department of Oncology, The First People's Hospital of Lianyungang, Lianyungang Clinical Medical College of Nanjing Medical University, Lianyungang, China
| | - Kunpeng Wang
- Department of Urology, The First People's Hospital of Lianyungang, Lianyungang Clinical Medical College of Nanjing Medical University, Lianyungang, China
| | - Jinbao Gu
- Department of Urology, The First People's Hospital of Lianyungang, Lianyungang Clinical Medical College of Nanjing Medical University, Lianyungang, China
| | - Bing Zhong
- Department of Urology, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, China
| | - Chuanquan Tu
- Department of Urology, The First People's Hospital of Lianyungang, Lianyungang Clinical Medical College of Nanjing Medical University, Lianyungang, China
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8
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Favorito LA. Increase in submissions to International Brazilian Journal of Urology during Covid-19 quarentine. Int Braz J Urol 2020; 46:689-690. [PMID: 32648411 PMCID: PMC7822379 DOI: 10.1590/s1677-5538.ibju.2020.05.01] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Luciano A. Favorito
- Universidade do Estado de Rio de Janeiro - Uerj, Brasil; Hospital Federal da Lagoa, Brasil
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