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Swiech D, Ozaki Y, Kim Y, Proniewicz E. Surface- and tip-enhanced Raman scattering of bradykinin onto the colloidal suspended Ag surface. Phys Chem Chem Phys 2016; 17:17140-9. [PMID: 26068400 DOI: 10.1039/c5cp02319j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, surface- (SERS) and tip-enhanced Raman scattering (TERS) techniques were used to determine the adsorption mode of bradykinin (BK), a small peptide implicated in, for example, carcinoma growth, onto colloidal suspended Ag surfaces under various environmental conditions, including: peptide concentrations (10(-5)-10(-7) M), excitation wavelengths (514.5 and 785.0 nm), and pH of aqueous sol solutions (from pH = 3 to pH = 11). The metal surface plasmon and rheology of the colloidal suspended Ag surface were explored by ultraviolet-visible (UV-Vis) spectroscopy and atomic force/scanning electron microscopy (AFM/SEM). The SERS results indicated that the peptide concentration of 10(-5) M was the optimal peptide concentration for monolayer colloidal coverage. The Phe(5/8) and Arg(9) residues of BK generally participated in the interactions with colloidal suspended Ag surfaces. The amide group appeared to be arranged in the same manner to the Ag surface in the pH range of 3 to 11. At acidic pH of the solution (pH = 3 to 5), the BK -COO(-) terminal group binds to the Ag surface as a bidentate (at pH = 3) or monodentate (at pH = 5) chelating ligand. At pH = 11, the imino group of Arg(9), probably due to its -C[double bond, length as m-dash]N(⊕)H2 protonation state, was not involved in the interaction with Ag. The reduction in the solution alkalinity (pH = 9) produced the deprotonation of the -C=N(⊕)H2 group followed by group rearrangement in a way favoring the interaction between the lone electron pair on N and Ag. The TERS studies confirmed the proposed, on the basis of SERS, behavior of BK onto the colloidal suspended Ag at pH = 7 and showed that in different points of the colloidal suspended Ag surface the same peptide fragments approximately having the same orientations with respect to this surface interact with it.
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Affiliation(s)
- D Swiech
- Faculty of Foundry Engineering, AGH University of Science and Technology, ul. Reymonta 23, 30-059 Kraków, Poland
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Domin H, Pięta E, Piergies N, Święch D, Kim Y, Proniewicz LM, Proniewicz E. Neuropeptide Y and its C-terminal fragments acting on Y2 receptor: Raman and SERS spectroscopy studies. J Colloid Interface Sci 2014; 437:111-118. [PMID: 25313473 DOI: 10.1016/j.jcis.2014.09.053] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 09/17/2014] [Accepted: 09/19/2014] [Indexed: 12/12/2022]
Abstract
In this paper, we present spectroscopic studies of neuropeptide Y (NPY) and its native NPY(3-36), NPY(13-36), and NPY(22-36) and mutated acetyl-(Leu(28,31))-NPY(24-36)C-terminal fragments acting on Y2 receptor. Since there is some evidence for the correlation between the SERS patterns and the receptor binding ability, we performed a detailed analysis for these compounds at the metal/water interface using Raman spectroscopy (RS) and surface-enhanced Raman spectroscopy (SERS) methods. Many studies have suggested that interactions of this kind are crucial for a variety of biomedical and biochemical phenomena. The identification of amino acids in these peptide sequences by SERS allowed us to determine which molecular fragments were responsible for the interaction with the silver nanoparticle surface. Our findings demonstrated that in all of the investigated compounds, the NPY(32-36)C-terminal fragment (Thr(32)-Arg(33)-Gln(34)-Arg(35)-Tyr(36)NH2) was involved in the adsorption process onto metal substrate. The results of the present study suggest that the same molecular fragment interacts with the Y2 receptor, what proved the usefulness of the SERS method in the study of these biologically active compounds. The search for analogs acting on Y2 receptor may be important from the viewpoint of possible future clinical applications.
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Affiliation(s)
- Helena Domin
- Department of Neurobiology, Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343 Kraków, Poland
| | - Ewa Pięta
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Kraków, Poland
| | - Natalia Piergies
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Kraków, Poland
| | - Dominika Święch
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Kraków, Poland
| | - Younkyoo Kim
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin, Kyunggi-Do 449-791, Republic of Korea
| | - Leonard M Proniewicz
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Kraków, Poland
| | - Edyta Proniewicz
- Faculty of Foundry Engineering, AGH University of Science and Technology, ul. Reymonta 23, 30-059 Kraków, Poland.
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Skołuba D, Sobolewski D, Prahl A, Proniewicz E. Interaction of Bradykinin and B 2Bradykinin Receptor Antagonists with Colloidal Au Surface Explored by Surface-Enhanced Raman Scattering. JOURNAL OF SPECTROSCOPY 2014; 2014:1-8. [DOI: 10.1155/2014/619373] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2024]
Abstract
Bradykinin (BK), an endogenous peptide hormone, which is involved in a number of physiological and pathophysiological processes, and the potent B2bradykinin receptor antagonists, [D-Arg0,Hyp3,Thi5,8,L-Pip7]BK, Aaa[D-Arg0,Hyp3,Thi5,8,L-Pip7]BK, [D-Arg0,Hyp3,Thi5,D-Phe7,L-Pip8]BK, and Aaa[D-Arg0,Hyp3,Thi5,D-Phe7,L-Pip8]BK, were deposited onto colloidal Au particles of 20 nm size. Interaction of these molecules with colloidal Au surface was explored by surface-enhanced Raman scattering (SERS). Briefly, it was shown that BK adsorbs on the Au surface mainly through the Phe5/Phe8residues. In case of the BK specifically modified analogues mainly the Pip and Thi rings are involved in the interaction process; however, Pip and Thi adopt slightly different orientation with respect to Au for each of the analogues. In addition, the lack of the Aaa vibrations, together with the enhancement of the Thi, Pip, or Phe modes, emphasizes the importance of theC-terminus in the interaction with the Au surface.
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Affiliation(s)
- Dominika Skołuba
- Faculty of Chemistry, Jagiellonian University, Ulica Ingardena 3, 30-060 Krakow, Poland
| | - Dariusz Sobolewski
- Department of Chemistry, University of Gdansk, Sobieskiego 18, 80-592 Gdansk, Poland
| | - Adam Prahl
- Department of Chemistry, University of Gdansk, Sobieskiego 18, 80-592 Gdansk, Poland
| | - Edyta Proniewicz
- Faculty of Foundry Engineering, AGH University of Science and Technology, ul. Reymonta 23, 30-059 Krakow, Poland
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Piergies N, Proniewicz E, Ozaki Y, Kim Y, Proniewicz LM. Influence of Substituent Type and Position on the Adsorption Mechanism of Phenylboronic Acids: Infrared, Raman, and Surface-Enhanced Raman Spectroscopy Studies. J Phys Chem A 2013; 117:5693-705. [DOI: 10.1021/jp404184x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Natalia Piergies
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow,
Poland
| | - Edyta Proniewicz
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow,
Poland
| | - Yukihiro Ozaki
- Department of Chemistry,
School
of Science and Technology, Kwansei-Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Younkyoo Kim
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin, Kyunggi-Do,
449-791, Korea
| | - Leonard M. Proniewicz
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow,
Poland
- Department of Chemistry,
School
of Science and Technology, Kwansei-Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
- The State Higher Vocational School, ul. Mickiewicza 8, 33-100 Tarnów,
Poland
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Proniewicz E, Skołuba D, Ignatjev I, Niaura G, Sobolewski D, Prahl A, Proniewicz LM. Influence of applied potential on bradykinin adsorption onto Ag, Au, and Cu electrodes. JOURNAL OF RAMAN SPECTROSCOPY 2013; 44:655-664. [DOI: 10.1002/jrs.4246] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2024]
Abstract
Surface‐enhanced Raman scattering, electrochemistry, and generalized two‐dimensional correlation analysis (G2DCA) methods were used to characterize bradykinin (BK), a hormone which is known to be involved in small‐cell and non‐small‐cell lung carcinoma and prostate cancer. BK was deposited onto Ag, Au, and Cu electrode surfaces under different applied electrode potentials (−1.000 V to 0.200 V) in aqueous solutions. Based on the analysis of the enhancement, the broadening, and the shifts in the wavenumbers of individual bands, specific conclusions were drawn regarding the peptide geometry and changes in this geometry that occurred when the electrode type and applied electrode potential were varied. Briefly, BK deposited onto the Ag, Au, and Cu electrode surfaces showed bands that were due to the vibrations of moieties in contact with or in close proximity to the electrode surfaces and were thus located on the same side of the polypeptide backbone. These moieties included the Phe, Arg, and Pro residues. The findings for adsorbed BK were fully supported by G2DCA, which also allowed us to determine the order in which changes occurred when the electrode potential was changed. In addition, it was found that at negative electrode potentials, the Phe rings and methylene groups interact with Ag electrode surface. No such interaction was observed for Au and Cu electrodes. Copyright © 2013 John Wiley & Sons, Ltd.
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Affiliation(s)
- Edyta Proniewicz
- Faculty of Chemistry Jagiellonian University ul. Ingardena 3 30‐060 Krakow Poland
| | - Dominika Skołuba
- Faculty of Chemistry Jagiellonian University ul. Ingardena 3 30‐060 Krakow Poland
| | - Ilja Ignatjev
- Institute of Chemistry Center for Physical Sciences and Technology A. Gostauto 9 LT‐01108 Vilnius Lithuania
| | - Gediminas Niaura
- Institute of Chemistry Center for Physical Sciences and Technology A. Gostauto 9 LT‐01108 Vilnius Lithuania
| | - Dariusz Sobolewski
- Faculty of Chemistry University of Gdansk Sobieskiego 18 80‐952 Gdansk Poland
| | - Adam Prahl
- Faculty of Chemistry University of Gdansk Sobieskiego 18 80‐952 Gdansk Poland
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