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Dehghani P, Karthikeyan V, Tajabadi A, Assi DS, Catchpole A, Wadsworth J, Leung HY, Roy VAL. Rapid Near-Patient Impedimetric Sensing Platform for Prostate Cancer Diagnosis. ACS OMEGA 2024; 9:14580-14591. [PMID: 38560003 PMCID: PMC10976404 DOI: 10.1021/acsomega.4c00843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 03/01/2024] [Indexed: 04/04/2024]
Abstract
With the global escalation of concerns surrounding prostate cancer (PCa) diagnosis, reliance on the serologic prostate-specific antigen (PSA) test remains the primary approach. However, the imperative for early PCa diagnosis necessitates more effective, accurate, and rapid diagnostic point-of-care (POC) devices to enhance the result reliability and minimize disease-related complications. Among POC approaches, electrochemical biosensors, known for their amenability and miniaturization capabilities, have emerged as promising candidates. In this study, we developed an impedimetric sensing platform to detect urinary zinc (UZn) in both artificial and clinical urine samples. Our approach lies in integrating label-free impedimetric sensing and the introduction of porosity through surface modification techniques. Leveraging a cellulose acetate/reduced graphene oxide composite, our sensor's recognition layer is engineered to exhibit enhanced porosity, critical for improving the sensitivity, capture, and interaction with UZn. The sensitivity is further amplified by incorporating zincon as an external dopant, establishing highly effective recognition sites. Our sensor demonstrates a limit of detection of 7.33 ng/mL in the 0.1-1000 ng/mL dynamic range, which aligns with the reference benchmark samples from clinical biochemistry. Our sensor results are comparable with the results of inductively coupled plasma mass spectrometry (ICP-MS) where a notable correlation of 0.991 is achieved. To validate our sensor in a real-life scenario, tests were performed on human urine samples from patients being investigated for prostate cancer. Testing clinical urine samples using our sensing platform and ICP-MS produced highly comparable results. A linear correlation with R2 = 0.964 with no significant difference between two groups (p-value = 0.936) was found, thus confirming the reliability of our sensing platform.
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Affiliation(s)
- Parisa Dehghani
- James
Watt School of Engineering, University of
Glasgow, Glasgow G12 8QQ, U.K.
| | | | - Ataollah Tajabadi
- James
Watt School of Engineering, University of
Glasgow, Glasgow G12 8QQ, U.K.
| | - Dani S. Assi
- James
Watt School of Engineering, University of
Glasgow, Glasgow G12 8QQ, U.K.
| | - Anthony Catchpole
- Scottish
Trace Element and Micronutrient Diagnostic and Research Laboratory,
Department of Biochemistry, Royal Infirmary, Glasgow G31 2ER, U.K.
| | - John Wadsworth
- Scottish
Trace Element and Micronutrient Diagnostic and Research Laboratory,
Department of Biochemistry, Royal Infirmary, Glasgow G31 2ER, U.K.
| | - Hing Y. Leung
- Cancer
Research UK Scotland Institute, Glasgow G61 1BD, U.K.
- School
of Cancer Sciences, MVLS, University of
Glasgow, Glasgow G61 1BD, U.K.
| | - Vellaisamy A. L. Roy
- School
of Science and Technology, Hong Kong Metropolitan
University, Ho Man Tin, Hong Kong
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Parrott D, Suh EH, Khalighinejad P, Jordan VC, Arreola I, Lo ST, Sherry AD. Investigations into the Signaling Pathways Involving Glucose-Stimulated Zinc Secretion (GSZS) from Prostate Epithelial Cells In Vitro and In Vivo. Mol Imaging Biol 2023; 25:935-943. [PMID: 37097498 DOI: 10.1007/s11307-023-01821-w] [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: 01/12/2023] [Revised: 03/18/2023] [Accepted: 04/16/2023] [Indexed: 04/26/2023]
Abstract
PURPOSE Recently, we reported that exposure of prostate cells in vitro or the in vivo prostate to high glucose results in release of Zn2+ ions, a process now referred to as glucose-stimulated zinc secretion (GSZS). To our knowledge, the metabolic event(s) that trigger GSZS remain largely unknown. Here, we explore several signaling pathways both in vitro using a prostate epithelial cell line and in vivo from the rat prostate. METHODS PNT1A cells grown to confluence were washed and tagged with ZIMIR to monitor zinc secretion by optical methods. The expression levels of GLUT1, GLUT4, and Akt in cells cultured in either zinc-rich or zinc-poor media and after exposure to high versus low glucose were determined. Zinc secretion from the rat prostate in vivo as detected by MRI was compared in control animals after injection of glucose, deoxyglucose, or pyruvate to initiate zinc secretion and in animals pre-treated with WZB-117 (a GLUT1 inhibitor) or S961 (a peripheral insulin receptor inhibitor). RESULTS PNT1A cells exposed to high levels of glucose secrete zinc whereas cells exposed to an equivalent amount of deoxyglucose or pyruvate do not. Expression of Akt was dramatically altered by zinc supplementation of the culture media but not after exposure to glucose while GLUT1 and GLUT4 levels were less affected. Rats pre-treated with WZB-117 prior to imaging showed a reduction in GSZS from the prostate compared to controls whereas rats pre-treated with S961 showed no difference. Interestingly, in comparison to PNT1A cells, pyruvate and deoxyglucose also stimulate zinc secretion in vivo likely through indirect mechanisms. CONCLUSIONS GSZS requires metabolism of glucose both in vitro (PNT1A cells) and in vivo (rat prostate). Pyruvate also stimulates zinc secretion in vivo but likely via an indirect pathway involving rapid production of glucose via gluconeogenesis. These combined results support the conclusion that glycolytic flux is required to trigger GSZS in vivo.
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Affiliation(s)
- Daniel Parrott
- Advanced Imaging Research Center, UT Southwestern Medical Center, 5323 Harry Hines Blvd, NE 4.210, Dallas, TX, 775390-8568, USA
- Department of Radiology, UT Southwestern Medical Center, Dallas, TX, 7575390-8896, USA
| | - Eul Hyun Suh
- Advanced Imaging Research Center, UT Southwestern Medical Center, 5323 Harry Hines Blvd, NE 4.210, Dallas, TX, 775390-8568, USA
- Department of Pharmaceutical Sciences, University of North Texas Health Science Center, Fort Worth, TX, 76107-2699, USA
| | - Pooyan Khalighinejad
- Advanced Imaging Research Center, UT Southwestern Medical Center, 5323 Harry Hines Blvd, NE 4.210, Dallas, TX, 775390-8568, USA
- Department of Radiology, UT Southwestern Medical Center, Dallas, TX, 7575390-8896, USA
| | - Veronica Clavijo Jordan
- Advanced Imaging Research Center, UT Southwestern Medical Center, 5323 Harry Hines Blvd, NE 4.210, Dallas, TX, 775390-8568, USA
- Department of Radiology, UT Southwestern Medical Center, Dallas, TX, 7575390-8896, USA
- Athinoula A. Martinos Center for Biomedical Imaging, The Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Ivan Arreola
- Advanced Imaging Research Center, UT Southwestern Medical Center, 5323 Harry Hines Blvd, NE 4.210, Dallas, TX, 775390-8568, USA
- Departments of Cell Biology and Biochemistry, UT Southwestern Medical Center, Dallas, TX, 75390-9039, USA
| | - Su-Tang Lo
- Advanced Imaging Research Center, UT Southwestern Medical Center, 5323 Harry Hines Blvd, NE 4.210, Dallas, TX, 775390-8568, USA
- Department of Radiology, UT Southwestern Medical Center, Dallas, TX, 7575390-8896, USA
| | - A Dean Sherry
- Advanced Imaging Research Center, UT Southwestern Medical Center, 5323 Harry Hines Blvd, NE 4.210, Dallas, TX, 775390-8568, USA.
- Department of Radiology, UT Southwestern Medical Center, Dallas, TX, 7575390-8896, USA.
- Department of Chemistry & Biochemistry, University of Texas at Dallas, Richardson, TX, 7575083-3021, USA.
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Nascente EDP, Amorim RL, Fonseca-Alves CE, de Moura VMBD. Comparative Pathobiology of Canine and Human Prostate Cancer: State of the Art and Future Directions. Cancers (Basel) 2022; 14:2727. [PMID: 35681707 PMCID: PMC9179314 DOI: 10.3390/cancers14112727] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/14/2022] [Accepted: 05/15/2022] [Indexed: 02/01/2023] Open
Abstract
First described in 1817, prostate cancer is considered a complex neoplastic entity, and one of the main causes of death in men in the western world. In dogs, prostatic carcinoma (PC) exhibits undifferentiated morphology with different phenotypes, is hormonally independent of aggressive character, and has high rates of metastasis to different organs. Although in humans, the risk factors for tumor development are known, in dogs, this scenario is still unclear, especially regarding castration. Therefore, with the advent of molecular biology, studies were and are carried out with the aim of identifying the main molecular mechanisms and signaling pathways involved in the carcinogenesis and progression of canine PC, aiming to identify potential biomarkers for diagnosis, prognosis, and targeted treatment. However, there are extensive gaps to be filled, especially when considering the dog as experimental model for the study of this neoplasm in humans. Thus, due to the complexity of the subject, the objective of this review is to present the main pathobiological aspects of canine PC from a comparative point of view to the same neoplasm in the human species, addressing the historical context and current understanding in the scientific field.
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Affiliation(s)
- Eduardo de Paula Nascente
- School of Veterinary Medicine and Animal Science, Federal University of Goiás, Goiânia 74001-970, Brazil;
| | - Renée Laufer Amorim
- Veterinary Clinic Department, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu 18618-970, Brazil;
| | - Carlos Eduardo Fonseca-Alves
- Department of Veterinary Surgery and Anesthesiology, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu 18618-970, Brazil;
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