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Zhao J, Ma H, Liu Y, Xu B, Song L, Han X, Liu R, He C, Cheng Z, Zhao B. SERS-based biosensor for detection of f-PSA%: Implications for the diagnosis of prostate cancer. Talanta 2023; 261:124654. [PMID: 37196403 DOI: 10.1016/j.talanta.2023.124654] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/21/2023] [Accepted: 05/05/2023] [Indexed: 05/19/2023]
Abstract
In diagnosing prostate cancer and distinguishing it from other prostate diseases, the ratio of the concentration of free prostate-specific antigen (f-PSA) to total prostate-specific antigen (t-PSA), i.e., (f-PSA%) is more accurate than the concentration of t-PSA alone. Immunoassay based on surface-enhanced Raman scattering (SERS) frequency shift has been proven to be particularly suitable for detecting large biomolecules with high reproducibility. Along similar lines, the present study developed a SERS-based biosensor that simultaneously detects t-PSA and f-PSA. The 4-mercaptobenzoic acid (MBA) on the immunocapture substrate is coupled to the t-PSA antibody through the carboxyl group, and the combination of t-PSA induces the Raman frequency shifts of MBA. The immunocolloidal gold attached with f-PSA antibodies selectively capture the f-PSA that immobilized on the MBA-modified SERS substrates, allowing for f-PSA quantification according to the SERS intensities of the 5, 5'-Dithiobis (succinimidyl-2-nitrobenzoate) (DSNB) probe. The results show that f-PSA and t-PSA have good linear response in the concentration scale of 0.1-20 ng/mL, and 1-200 ng/mL, respectively. The biosensor combines Raman frequency shifts and intensities, which greatly simplifies traditional procedures for f-PSA% detection. All the results demonstrated the great potential of the proposed biosensor in highly reproducible and accurate diagnosis of prostate cancers.
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Affiliation(s)
- Junqi Zhao
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, PR China
| | - Hao Ma
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, PR China
| | - Yawen Liu
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, PR China
| | - Baofeng Xu
- Department of Stroke Center, First Hospital of Jilin University, Changchun, China.
| | - Lina Song
- China-Japan Union Hospital of Jilin University, Changchun, 130033, PR China
| | - Xiaoxia Han
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, PR China
| | - Rui Liu
- China-Japan Union Hospital of Jilin University, Changchun, 130033, PR China
| | - Chengyan He
- China-Japan Union Hospital of Jilin University, Changchun, 130033, PR China
| | - Ziyi Cheng
- Key Laboratory of Emergency and Trauma, Ministry of Education, Hainan Medical University, Haikou, 571199, China
| | - Bing Zhao
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, PR China.
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Siddiqui IA, Adhami VM, Saleem M, Mukhtar H. Beneficial effects of tea and its polyphenols against prostate cancer. Mol Nutr Food Res 2006; 50:130-43. [PMID: 16425281 DOI: 10.1002/mnfr.200500113] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Tea, next to water, is the most widely consumed beverage in the world. Depending upon the level of fermentation, tea can be categorized into three types: green (unfermented), oolong (partially fermented), and black (highly to fully fermented). In general, green tea has been found to be superior to black and oolong tea in terms of antioxidant and health promoting benefits owing to the higher content of (-)-epigallocatechin-3-gallate. Tea polyphenols comprise about one-third of the weight of the dried leaf, and they exhibit biochemical and pharmacological activities including antioxidant activities, inhibition of cell proliferation, induction of apoptosis, cell cycle arrest and modulation of carcinogen metabolism. Several studies demonstrate that most tea polyphenols exert their effects by scavenging reactive oxygen species (ROS) since excessive production of ROS has been implicated in the development of a variety of ailments including cancer of the prostate gland (CaP). Using cell culture and animal model systems, molecular targets for these remarkable beneficial effects of green tea drinking on CaP prevention and therapy have been defined. Geographical and case-control studies are showing that green tea drinking could afford CaP chemopreventive effects in human population. In this review we attempt to summarize the experimental as well as the epidemiological basis for the possible role of tea and its polyphenols for chemoprevention and chemotherapy of CaP.
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Affiliation(s)
- Imtiaz A Siddiqui
- Department of Dermatology, University of Wisconsin, Medical Sciences Center, Madison, WI 53706, USA
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Abstract
Benign prostatic hyperplasia is a common condition in males over 50 years, but prostate cancer can develop in the same population. Prostate specific antigen, the best marker for prostate cancer, is also produced by benign epithelial cells, and there is an overlapping phenomenon between both conditions. The better we understand the relationships between benign prostatic hyperplasia and prostate specific antigen, the higher will be the discrimination power of prostate specific antigen measurement as a marker for prostate cancer. Our scope includes a review of the latest published material to date on this subject.
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Affiliation(s)
- P Laguna
- Urology Department, Hospital Gral. La Mancha-Centro Hospital, Alcazar de San Juan, Spain.
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