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Krawczyk P, Wybranowski T, Kaźmierski Ł, Hołyńska-Iwan I, Bratkowska M, Cysewski P, Jędrzejewska B. 2'-(1H-phenanthro[9,10-d]imidazol-2-yl)-phenyl-4-carboxylic acid N-hydroxysuccinimide ester: A new phenanthroimidazole derivative as a fluorescent probe for medical imaging applications. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 228:117757. [PMID: 31718978 DOI: 10.1016/j.saa.2019.117757] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 10/24/2019] [Accepted: 11/03/2019] [Indexed: 06/10/2023]
Abstract
In this study a new probe (2'-(1H-phenanthro[9,10-d]imidazol-2-yl)-phenyl-4-carboxylic acid N-hydroxysuccinimide ester, PB1-1) was synthesized and presented, containing the ester group as reactive group for medical imaging applications. The tests included a comparison to the PB1 probe with the aldehyde group described earlier. Also, the photophysics of PB1 and PB1-1 when conjugated to albumin (HSA) and concanavalin A (Con A) was studied. The fluorescence anisotropy measurements and the method of fluorescence quenching of protein were used to examine these interactions. The results showed that both dyes are highly bound to the studied proteins, especially PB1-1. In the present study we also compared the stability of prepared conjugates. The in vitro study have shown that all tested compounds presented to be usable in the case of fixated cell staining. PB1-1-ConA and PB1-1-HSA were characterized with the lowest cytotoxicity during the MTT assay, and thus should be more suitable for live imaging applications than PB1-ConA and PB1-HSA. The results obtained in this work confirmed the theses presented in in silico studies as to the correctness of the choice of ester group as actively binding to the protein. At the same time, we have experimentally demonstrated the significant influence of a probe-protein linker on the spectral properties of conjugates used in medical imaging. We have clearly indicated that a detailed analysis of derivatives with different reactive group allows for proper probe selection. We also pointed out that based on the geometric skeleton of one dye, a whole range of fluorescent probes with different absorption and fluorescence spectra can be obtained for in vitro tests in medical imaging.
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Affiliation(s)
- Przemysław Krawczyk
- Nicolaus Copernicus University, Collegium Medicum, Faculty of Pharmacy, Department of Physical Chemistry, Kurpińskiego 5, 85-950 Bydgoszcz, Poland.
| | - Tomasz Wybranowski
- Nicolaus Copernicus University, Collegium Medicum, Faculty of Pharmacy, Medical Physics Division, Biophysics Department, Jagiellońska 13, 85-067 Bydgoszcz, Poland
| | - Łukasz Kaźmierski
- Nicolaus Copernicus University, Collegium Medicum, Faculty of Medicine, Department of Tissue Engineering, Karłowicza 24, 85-092 Bydgoszcz, Poland; Nicolaus Copernicus University, Collegium Medicum, Faculty of Medicine, Department of Oncology, Radiotherapy and Oncological, M. Curie Skłodowskiej 9, 85-094 Bydgoszcz, Poland
| | - Iga Hołyńska-Iwan
- Nicolaus Copernicus University, Collegium Medicum, Faculty of Pharmacy, Laboratory of Electrophysiology of Epithelial Tissue and Skin, Department of Pathobiochemistry and Clinical Chemistry, M. Curie Skłodowskiej 9, 85-094 Bydgoszcz, Poland
| | - Magdalena Bratkowska
- UTP University of Science and Technology, Faculty of Chemical Technology and Engineering, Seminaryjna 3, 85-326 Bydgoszcz, Poland
| | - Piotr Cysewski
- Nicolaus Copernicus University, Collegium Medicum, Faculty of Pharmacy, Department of Physical Chemistry, Kurpińskiego 5, 85-950 Bydgoszcz, Poland
| | - Beata Jędrzejewska
- UTP University of Science and Technology, Faculty of Chemical Technology and Engineering, Seminaryjna 3, 85-326 Bydgoszcz, Poland
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Niwayama S, Zabet-Moghaddam M, Kurono S, Kattanguru P, Shaikh AL. Synthesis of d-labeled and unlabeled ethyl succinic anhydrides and application to quantitative analysis of peptides by isotope differential mass spectrometry. Bioorg Med Chem Lett 2016; 26:5073-5077. [PMID: 27624079 DOI: 10.1016/j.bmcl.2016.08.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 08/19/2016] [Accepted: 08/24/2016] [Indexed: 11/18/2022]
Abstract
Ethyl succinic anhydride and its d5-labeled version have been synthesized and applied to quantitative analysis of peptides in combination with MALDI or ESI mass spectrometry. These modifiers react with amino groups in the N-termini and lysine side chains in proteins, and therefore the combination of these modifiers was shown to be a useful tool for quantification of peptides and hence for proteomics research.
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Affiliation(s)
- Satomi Niwayama
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA; Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; Graduate School of Engineering, Muroran Institute of Technology, Muroran, Hokkaido 050-8585, Japan.
| | - Masoud Zabet-Moghaddam
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA
| | - Sadamu Kurono
- Joint Research Laboratory of Molecular Signature Analysis, Division of Health Sciences, Osaka University Graduate School of Medicine, 1-7 Yamadaoka, Suita, Osaka 565-0871, Japan; Laboratory and Specialty Chemicals Division, Wako Pure Chemical Industries, Ltd, 3-1-2 Doshomachi, Chuo-ku, Osaka, Osaka 540-8605, Japan
| | - Pullaiah Kattanguru
- Graduate School of Engineering, Muroran Institute of Technology, Muroran, Hokkaido 050-8585, Japan
| | - Aarif L Shaikh
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA
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Kurono S, Kaneko Y, Niwayama S. Quantitative protein analysis using (13)C7-labeled iodoacetanilide and d5-labeled N-ethylmaleimide by nano liquid chromatography/nanoelectrospray ionization ion trap mass spectrometry. Bioorg Med Chem Lett 2013; 23:3111-8. [PMID: 23562245 DOI: 10.1016/j.bmcl.2013.02.112] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Revised: 02/20/2013] [Accepted: 02/25/2013] [Indexed: 10/27/2022]
Abstract
We have developed a methodology for quantitative analysis and concurrent identification of proteins by the modification of cysteine residues with a combination of iodoacetanilide (IAA, 1) and (13)C7-labeled iodoacetanilide ((13)C7-IAA, 2), or N-ethylmaleimide (NEM, 3) and d5-labeled N-ethylmaleimide (d5-NEM, 4), followed by mass spectrometric analysis using nano liquid chromatography/nanoelectrospray ionization ion trap mass spectrometry (nano LC/nano-ESI-IT-MS). The combinations of these stable isotope-labeled and unlabeled modifiers coupled with LC separation and ESI mass spectrometric analysis allow accurate quantitative analysis and identification of proteins, and therefore are expected to be a useful tool for proteomics research.
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Affiliation(s)
- Sadamu Kurono
- Joint Research Laboratory of Molecular Signature Analysis, Division of Health Sciences, Osaka University Graduate School of Medicine, 1-7 Yamadaoka, Suita, Osaka 565-0871, Japan
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