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Wen Q, Sun T, Wang Q, Huang W, Liu Y. Unique thiophilic affinity MOFs as specific sorbent for disulfide bond-containing compounds capture. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0799-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Bhanushali PB, Badgujar SB, Tripathi MM, Gupta S, Murthy V, Krishnasastry MV, Puri CP. Development of glycan specific lectin based immunoassay for detection of prostate specific antigen. Int J Biol Macromol 2016; 86:468-80. [DOI: 10.1016/j.ijbiomac.2016.01.110] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Revised: 01/27/2016] [Accepted: 01/28/2016] [Indexed: 10/22/2022]
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3
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Takai E, Uda K, Yoshida T, Zako T, Maeda M, Shiraki K. Cysteine inhibits the fibrillisation and cytotoxicity of amyloid-β 40 and 42: implications for the contribution of the thiophilic interaction. Phys Chem Chem Phys 2014; 16:3566-72. [PMID: 24413447 DOI: 10.1039/c3cp54245a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Inhibitors of amyloid fibril formation have been at the centre of intense research efforts for the prevention of amyloidosis. Here, we hypothesise that a specific non-covalent interaction, the thiophilic interaction between the side chain of an aromatic residue in a polypeptide and a sulphur atom of the compound, effectively inhibits amyloid fibril formation. Fluorescence spectroscopy and transmission electron microscopy revealed that sulphur compounds, particularly Cys, inhibit the fibrillisation of amyloid-β 1-40 (Aβ40) and 1-42 (Aβ42). Interestingly, aggregates of Aβ40 and Aβ42 induced by Cys were less cytotoxic than those induced by catechin, which is the most typical inhibitor of amyloid fibril formation. Because the essential amino acid, Cys, is an abundant molecule in the blood and cytosol, our data provide a new basis for the prevention of amyloid-related diseases and the elucidation of the mechanism of these diseases.
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Affiliation(s)
- Eisuke Takai
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan.
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Nyalwidhe JO, Betesh LR, Powers TW, Jones EE, White KY, Burch TC, Brooks J, Watson MT, Lance RS, Troyer DA, Semmes OJ, Mehta A, Drake RR. Increased bisecting N-acetylglucosamine and decreased branched chain glycans of N-linked glycoproteins in expressed prostatic secretions associated with prostate cancer progression. Proteomics Clin Appl 2013; 7:677-89. [PMID: 23775902 DOI: 10.1002/prca.201200134] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 02/28/2013] [Accepted: 03/30/2013] [Indexed: 11/07/2022]
Abstract
PURPOSE Using prostatic fluids rich in glycoproteins like prostate-specific antigen and prostatic acid phosphatase (PAP), the goal of this study was to identify the structural types and relative abundance of glycans associated with prostate cancer status for subsequent use in emerging MS-based glycopeptide analysis platforms. EXPERIMENTAL DESIGN A series of pooled samples of expressed prostatic secretions (EPS) and exosomes reflecting different stages of prostate cancer disease were used for N-linked glycan profiling by three complementary methods, MALDI-TOF profiling, normal-phase HPLC separation, and triple quadropole MS analysis of PAP glycopeptides. RESULTS Glycan profiling of N-linked glycans from different EPS fluids indicated a global decrease in larger branched tri- and tetra-antennary glycans. Differential exoglycosidase treatments indicated a substantial increase in bisecting N-acetylglucosamines correlated with disease severity. A triple quadrupole MS analysis of the N-linked glycopeptides sites from PAP in aggressive prostate cancer pools was done to cross-reference with the glycan profiling data. CONCLUSION AND CLINICAL RELEVANCE Changes in glycosylation as detected in EPS fluids reflect the clinical status of prostate cancer. Defining these molecular signatures at the glycopeptide level in individual samples could improve current approaches of diagnosis and prognosis.
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Affiliation(s)
- Julius O Nyalwidhe
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, VA , USA.,The Leroy T. Canoles, Jr. Cancer Research Center, Eastern Virginia Medical School Norfolk, VA, USA
| | - Lucy R Betesh
- Department of Microbiology and Immunology, Drexel Institute for Biotechnology and Virology, Drexel University College of Medicine, Doylestown, PA, USA
| | - Thomas W Powers
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, MUSC Proteomics Center, Medical University of South Carolina, Charleston, SC, USA
| | - E Ellen Jones
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, MUSC Proteomics Center, Medical University of South Carolina, Charleston, SC, USA
| | - Krista Y White
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Tanya C Burch
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, VA, USA.,The Leroy T. Canoles, Jr. Cancer Research Center, Eastern Virginia Medical School Norfolk, VA, USA
| | - Jasmin Brooks
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, MUSC Proteomics Center, Medical University of South Carolina, Charleston, SC, USA
| | - Megan T Watson
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, VA, USA.,The Leroy T. Canoles, Jr. Cancer Research Center, Eastern Virginia Medical School Norfolk, VA, USA
| | - Raymond S Lance
- The Leroy T. Canoles, Jr. Cancer Research Center, Eastern Virginia Medical School Norfolk, VA, USA
| | - Dean A Troyer
- The Leroy T. Canoles, Jr. Cancer Research Center, Eastern Virginia Medical School Norfolk, VA, USA
| | - O John Semmes
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, VA, USA.,The Leroy T. Canoles, Jr. Cancer Research Center, Eastern Virginia Medical School Norfolk, VA, USA
| | - Anand Mehta
- Department of Microbiology and Immunology, Drexel Institute for Biotechnology and Virology, Drexel University College of Medicine, Doylestown, PA, USA
| | - Richard R Drake
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, MUSC Proteomics Center, Medical University of South Carolina, Charleston, SC, USA
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Kumar V, Hassan MI, Singh AK, Dey S, Singh TP, Yadav S. Strategy for sensitive and specific detection of molecular forms of PSA based on 2DE and kinetic analysis: A step towards diagnosis of prostate cancer. Clin Chim Acta 2009; 403:17-22. [DOI: 10.1016/j.cca.2008.11.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2008] [Revised: 11/04/2008] [Accepted: 11/07/2008] [Indexed: 11/29/2022]
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White KY, Rodemich L, Nyalwidhe JO, Comunale MA, Clements MA, Lance RS, Schellhammer PF, Mehta AS, Semmes OJ, Drake RR. Glycomic characterization of prostate-specific antigen and prostatic acid phosphatase in prostate cancer and benign disease seminal plasma fluids. J Proteome Res 2009; 8:620-30. [PMID: 19128049 DOI: 10.1021/pr8007545] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Prostate-specific antigen (PSA) and prostatic acid phosphatase (PAP) are glycoproteins secreted by prostate epithelial cells, and have a long clinical history of use as serum biomarkers of prostate cancers. These two proteins are present at significantly higher concentrations in seminal plasma, making this proximal fluid of the prostate a good source for purifying enough protein for characterization of prostate disease associated changes in glycan structures. With the use of seminal fluid samples representative of normal control, benign prostatic disease and prostate cancers, PAP and PSA were enriched by thiophilic absorption chromatography. Released N-linked glycan constituents from both proteins were analyzed by a combination of normal phase HPLC and MALDI-TOF spectrometry. For PSA, 40 putative glycoforms were determined, and 21 glycoforms were determined for PAP. PAP glycans were further analyzed with a hybrid triple quadrupole/linear ion trap mass spectrometer to assign specific glycoform classes to each of the three N-linked sites. The glycans identified in these studies will allow for more defined targeting of prostate disease-specific changes for PAP, PSA and other secreted prostatic glycoproteins.
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Affiliation(s)
- Krista Y White
- Department of Microbiology, Eastern Virginia Medical School, Norfolk, Virginia 23507, USA
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Drake RR, White KY, Fuller TW, Igwe E, Clements MA, Nyalwidhe JO, Given RW, Lance RS, Semmes OJ. Clinical collection and protein properties of expressed prostatic secretions as a source for biomarkers of prostatic disease. J Proteomics 2009; 72:907-17. [PMID: 19457353 DOI: 10.1016/j.jprot.2009.01.007] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2008] [Revised: 12/25/2008] [Accepted: 01/04/2009] [Indexed: 12/14/2022]
Abstract
The prostate gland secretes many proteins in a prostatic fluid that combines with seminal vesicle derived fluids to promote sperm activation and function. Proximal fluids of the prostate that can be collected clinically are seminal plasma and expressed-prostatic secretion (EPS) fluids. EPS represents the fluid being secreted by the prostate following a digital rectal prostate massage, which in turn can be collected in voided urine post-exam. This collection is not disruptive to a standard urological exam, and it can be repeatedly collected from men across all prostatic disease states. A direct EPS fluid can also be collected under anesthesia prior to prostatectomy. While multiple genetic assays for prostate cancer detection are being developed for the shed epithelial cell fraction of EPS urines, the remaining fluid that contains many prostate-derived proteins has been minimally characterized. Approaches to optimization and standardization of EPS collection consistent with current urological exam and surgical practices are described, and initial proteomic and glycomic evaluations of the of EPS fluid are summarized for prostate specific antigen and prostatic acid phosphatase. Continued characterization of the prostate specific protein components of EPS urine combined with optimization of clinical collection procedures should facilitate discovery of new biomarkers for prostate cancer.
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Affiliation(s)
- Richard R Drake
- Department of Microbiology and Molecular Cell Biology, Center for Biomedical Proteomics, Eastern Virginia Medical School, Norfolk, Virginia 23507, USA.
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Bindukumar B, Schwartz S, Aalinkeel R, Mahajan S, Lieberman A, Chadha K. Proteomic profiling of the effect of prostate-specific antigen on prostate cancer cells. Prostate 2008; 68:1531-45. [PMID: 18646040 DOI: 10.1002/pros.20811] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND Prostate-specific antigen (PSA) is a well-known biomarker for diagnosis and management of prostate cancer. PSA has been shown to have anti-angiogenic activity. We used the emerging proteomic research technology to identify proteins in prostate cancer cells whose expression is regulated by enzymatically active PSA. METHODS Differentially expressed proteins in PC-3M cells treated with PSA were analyzed by 2D-DIGE analysis and identified by HPLC-MS/MS and SEQUEST data mining. Biological network analysis was carried out using MetaCore integrated software designed for functional analysis of experimental data. Gene expression data for several regulated proteins were confirmed by real-time, quantitative PCR. RESULTS A total of 41 proteins were significantly (P < 0.05) changed in abundance in PC-3M cells in response to PSA treatment. Proteins from 26 gel-spots were identified. Many of the down-regulated proteins including N8 gene product long isoform, laminin receptor, vimentin, DJ-1 and Hsp60 are known to be involved in tumor progression. DISCUSSION The relevance of the level of PSA in prostate tissue microenvironment and its relation to tumor progression has not been elucidated. PSA has been shown to down-regulate several proteins that are known to have involvement in tumor progression. This suggests that normal physiological levels of PSA in prostate tissue microenvironment may be promoting non-angiogenic environment and its down-regulation may promote tumor growth.
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Affiliation(s)
- B Bindukumar
- Department of Molecular & Cellular Biology, Roswell Park Cancer Research Institute, Buffalo, New York 14263, USA
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Satheesh Babu AK, Vijayalakshmi MA, Smith GJ, Chadha KC. Thiophilic-interaction chromatography of enzymatically active tissue prostate-specific antigen (T-PSA) and its modulation by zinc ions. J Chromatogr B Analyt Technol Biomed Life Sci 2008; 861:227-35. [PMID: 18083072 PMCID: PMC2716732 DOI: 10.1016/j.jchromb.2007.11.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2007] [Revised: 11/19/2007] [Accepted: 11/25/2007] [Indexed: 10/22/2022]
Abstract
Prostate-specific antigen (PSA) is a serine protease secreted both by normal prostate glandular epithelial cells and prostate cancer cells. We explored "thiophilic-interaction chromatography" (TIC) to isolate tissue prostate-specific antigen (T-PSA) from fresh human prostate cancer tissue harvested by radical prostatectomy for the purpose to characterize T-PSA for its enzymatic activity and sensitivity to zinc ions. We have shown, for the first time, that T-PSA has strong affinity for the thiophilic gel (T-gel). The average recovery of T-PSA from T-gel is over 87%. The presence of PSA in the column eluate was confirmed by ELISA and SDS/PAGE. Western blot developed with monoclonal antibody to PSA revealed that T-PSA was predominantly in the "free" form having a molecular weight of 33 kDa. Furthermore, T-PSA was found to be enzymatically active. T-PSA was found to be less enzymatically active as compared to seminal plasma PSA. The inhibition of enzymatic activity of both f-PSA and T-PSA over a wide range of concentrations of Zn(2+) ions (10nM to 50 microM) was comparable. In contrast, the enzymatic activity of chymotrypsin, another serine-protease, was affected differently. At higher concentrations of Zn(2+) (10 microM and higher) the enzymatic activity of chymotrypsin was inhibited, whereas, at lower concentrations of Zn(2+) (5 microM and lower), the enzymatic activity was enhanced.
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Affiliation(s)
- A K Satheesh Babu
- Centre for Bio-Separation Technology, VIT University, Vellore, India
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Xue B, Ersson B, Porath J, Caldwell K. Chromatographic and fluorometric study of interactions between thiophilic and hydrophobic ligands and tryptophan peptide homologues. J Chromatogr A 2006; 1107:46-51. [PMID: 16413557 DOI: 10.1016/j.chroma.2005.11.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2005] [Revised: 11/11/2005] [Accepted: 11/14/2005] [Indexed: 10/25/2022]
Abstract
The interactions of tryptophan and its peptide homologues with thiophilic ligands were studied in terms of their chromatographic retention and steady-state fluorescence under various conditions, and compared with non-polar structures typically regarded as pure hydrophobic ligands. The experimental results show that both non-polar and polar interactions are involved in what has been termed "thiophilic adsorption chromatography".
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Affiliation(s)
- Bo Xue
- Institute of Molecular and Cell Biology, 61 Biopolis Drive, Proteos, Singapore 138673, Singapore
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Tabarés G, Radcliffe CM, Barrabés S, Ramírez M, Aleixandre RN, Hoesel W, Dwek RA, Rudd PM, Peracaula R, de Llorens R. Different glycan structures in prostate-specific antigen from prostate cancer sera in relation to seminal plasma PSA. Glycobiology 2005; 16:132-45. [PMID: 16177264 DOI: 10.1093/glycob/cwj042] [Citation(s) in RCA: 135] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Prostate-specific antigen (PSA), the tumor marker currently used for prostate cancer (PCa), is not specific enough to distinguish between PCa and benign prostate hyperplasia (BPH). Glycan processing is normally perturbed in tumors, therefore we investigated whether changes in glycosylation of PSA could be useful diagnostic indicators. Previously we determined that the glycosylation of PSA secreted by the tumor prostate cell line LNCaP differs significantly from that of PSA from seminal plasma (normal control). We therefore undertook a detailed glycan analysis of PSA derived from sera from PCa patients and, importantly, established that the glycosylation of the PCa serum PSA was significantly different from the PSA from the LNCaP cell line. In comparison with seminal plasma PSA, the fucose content of PSA from the PCa patient serum was significantly lower and there was a decrease in alpha2,3-linked sialic acid. Differences in the glycosylation of PSA derived from PCa patients' sera, seminal plasma, and LNCaP cells were further established by lectin detection, glycosylation immunosorbent assay, and two-dimensional electrophoresis. We also investigated whether the impact of glycosylation changes initiated by the tumor was reflected in the serum glycome. By comparing the glycans released from the total glycoproteins in PCa patient serum with those of normal serum we found an increase in the proportion of sialyl-Lewis x structures. Further analysis of the glycosylation of PSA from PCa and BPH sera will be required in order to determine the utility of these glycan differences to discriminate specifically between benign and malignant prostate states.
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Affiliation(s)
- Glòria Tabarés
- Unitat de Bioquímica i Biologia Molecular, Department de Biologia Universitat de Girona, Campus de Montilivi s/n. 17071, Girona, Catalonia, Spain
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Bindukumar B, Schwartz SA, Nair MPN, Aalinkeel R, Kawinski E, Chadha KC. Prostate-specific antigen modulates the expression of genes involved in prostate tumor growth. Neoplasia 2005; 7:241-52. [PMID: 15799824 PMCID: PMC1501136 DOI: 10.1593/neo.04529] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Prostate-specific antigen (PSA) is a serine protease that is widely used as a surrogate marker in the early diagnosis and management of prostate cancer. The physiological relevance of tissue PSA levels and their role in prostate tumor growth and metastasis are not known. Free-PSA (f-PSA) was purified to homogeneity from human seminal plasma by column chromatography, eliminating hk2 and all known PSA complexes and retaining its protease activity. Confluent monolayers of prostate cancer cell lines, PC-3M and LNCaP, were treated with f-PSA in a series of in vitro experiments to determine the changes in expression of various genes that are known to regulate tumor growth and metastasis. Gene array, quantitative polymerase chain reaction (QPCR), and enzyme-linked immunosorbent assay (ELISA) results show significant changes in the expression of various cancer-related genes in PC-3M and LNCaP cells treated with f-PSA. In a gene array analysis of PC-3M cells treated with 10 muM f-PSA, 136 genes were upregulated and 137 genes were downregulated. In LNCaP cells treated with an identical concentration of f-PSA, a total of 793 genes was regulated. QPCR analysis reveals that the genes for urokinase-type plasminogen activator (uPA), VEGF, and Pim-1 oncogene, known to promote tumor growth, were significantly downregulated, whereas IFN-gamma, known to be a tumor-suppressor gene, was significantly upregulated in f-PSA-treated PC-3M cells. The effect of f-PSA on VEGF and IFN-gamma gene expression and on protein release in PC-3M cells was distinctly dose-dependent. In vivo studies showed a significant reduction (P = .03) in tumor load when f-PSA was administered in the tumor vicinity of PC-3M tumor-bearing BALB/c nude mice. Our data support the hypothesis that f-PSA plays a significant role in prostate tumor growth by regulating various proangiogenic and antiangiogenic growth factors.
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Affiliation(s)
- B Bindukumar
- Department of Molecular and Cellular Biology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
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