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No Y, Kim NH, Zafar MS, Park SH, Lee J, Chae H, Yun WS, Kim YD, Kim YH. Effect of Secondary Structures on the Adsorption of Peptides onto Hydrophobic Solid Surfaces Revealed by SALDI-TOF and MD Simulations. ACS OMEGA 2022; 7:43492-43498. [PMID: 36506148 PMCID: PMC9730778 DOI: 10.1021/acsomega.2c03934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 11/03/2022] [Indexed: 06/17/2023]
Abstract
The adsorption of peptides and proteins on hydrophobic solid surfaces has received considerable research attention owing to their wide applications to biocompatible nanomaterials and nanodevices, such as biosensors and cell adhesion materials with reduced nanomaterial toxicity. However, fundamental understandings about physicochemical hydrophobic interactions between peptides and hydrophobic solid surfaces are still unknown. In this study, we investigate the effect of secondary structures on adsorption energies between peptides and hydrophobic solid surfaces via experimental and theoretical analyses using surface-assisted laser desorption/ionization-time-of-flight (SALDI-TOF) and molecular dynamics (MD) simulations. The hydrophobic interactions between peptides and hydrophobic solid surfaces measured via SALDI-TOF and MD simulations indicate that the hydrophobic interaction of peptides with random coil structures increased more than that of peptides with an α-helix structure when polar amino acids are replaced with hydrophobic amino acids. Additionally, our study sheds new light on the fundamental understanding of the hydrophobic interaction between hydrophobic solid surfaces and peptides that have diverse secondary structures.
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Affiliation(s)
- Young
Hyun No
- SKKU
Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon16419, Republic of Korea
| | - Nam Hyeong Kim
- SKKU
Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon16419, Republic of Korea
| | - Muhammad Shahzad Zafar
- School
of Chemical Engineering, Sungkyunkwan University, Suwon16419, Republic of Korea
- Department
of Chemical Engineering, University of Engineering
and Technology (Faisalabad Campus), Lahore54890, Pakistan
| | - Seon Hwa Park
- Department
of Chemistry, Sungkyunkwan University, Suwon16419, Republic of Korea
| | - Jaecheol Lee
- School
of Pharmacy, Sungkyunkwan University, Suwon16419, Republic of Korea
- Biomedical
Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon16419, Republic of Korea
- Imnewrun
Inc., Suwon16419, Republic of Korea
- Department
of Biopharmaceutical Convergence, Sungkyunkwan
University, Suwon16419, Republic of Korea
| | - Heeyeop Chae
- School
of Chemical Engineering, Sungkyunkwan University, Suwon16419, Republic of Korea
| | - Wan Soo Yun
- Department
of Chemistry, Sungkyunkwan University, Suwon16419, Republic of Korea
| | - Young Dok Kim
- Department
of Chemistry, Sungkyunkwan University, Suwon16419, Republic of Korea
| | - Yong Ho Kim
- SKKU
Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon16419, Republic of Korea
- Department
of Chemistry, Sungkyunkwan University, Suwon16419, Republic of Korea
- Imnewrun
Inc., Suwon16419, Republic of Korea
- Department
of Nano Engineering, Sungkyunkwan University, Suwon16419, Republic of Korea
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2
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Ma Y, Tonelli M, Unsworth LD. Effect of carbamylation on protein structure and adsorption to self-assembled monolayer surfaces. Colloids Surf B Biointerfaces 2021; 203:111719. [PMID: 33831751 DOI: 10.1016/j.colsurfb.2021.111719] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 02/25/2021] [Accepted: 03/22/2021] [Indexed: 11/19/2022]
Abstract
Protein adsorption research has primarily focused upon the effects of surface chemistry, with almost no emphasis on how changes to proteins that occur in various disease states may influence their adsorption. One such situation occurs with chronic kidney disease where, despite hemodialysis treatment, the retention of urea within the blood compartment leads to protein carbamylation. Protein carbamylation has been shown to alter the function and structure of proteins. This work is focused on understanding how different degrees of carbamylation affect the physicochemical properties (structure, charge, water interactions) of single proteins (α-lactalbumin, albumin, and fibrinogen) and their adsorption to self-assembled monolayers. It was found that, unlike its secondary structure, the protein's tertiary structure was significantly altered upon carbamylation. Also, compared to native proteins, an increase in carbamylation lead to an increase in the negative surface charge of the protein and a weaker hydration state of the protein. In order to study the effects of different types of neutral surfaces, of different surface-water properties, on protein adsorption both bare and alkanethiol modified (-CH3 or -OH end-groups) Au surfaces with were used as model surfaces. A significant decrease in adsorbed amounts of carbamylated fibrinogen and carbamylated α-lactalbumin, but not for carbamylated albumin, relative to native proteins was observed for both surfaces; suggesting that the increase in negative surface charge is more influential on adsorption than the change in hydration that occurs throughout the protein upon carbamylation. This data suggests that protein alterations that occur due to disease states have a significant effect on the overall protein structure and these changes affect their adsorption to surfaces.
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Affiliation(s)
- Yuhao Ma
- Department of Biomedical Engineering, University of Alberta, Edmonton, AB, T6G 2V2, Canada
| | - Marcello Tonelli
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Larry D Unsworth
- Department of Biomedical Engineering, University of Alberta, Edmonton, AB, T6G 2V2, Canada; Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, T6G 1H9, Canada.
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3
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Xiang L, Zhang J, Wang W, Gong L, Zhang L, Yan B, Zeng H. Nanomechanics of π-cation-π interaction with implications for bio-inspired wet adhesion. Acta Biomater 2020; 117:294-301. [PMID: 33007483 DOI: 10.1016/j.actbio.2020.09.043] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/18/2020] [Accepted: 09/22/2020] [Indexed: 12/14/2022]
Abstract
Cation-π interactions play a vital role in modulating various biological processes, e.g., potassium-selective channel, protein folding and adhesion of marine organism. Previous studies mainly focus on binary cation-π interaction, whereas due to the complexity of biological systems and surrounding environments, a single cation is often in close proximity with more than one π-conjugated unit, which could exhibit essentially different binding behavior. Herein, the first experimental evidence of ternary π-cation-π interaction is reported through direct nanomechanical force measurement in a model π-conjugated poly(catechol) (PC) system coexisting with K+. Ternary π-cation-π interactions can bridge π-conjugated moieties, resulting in robust adhesion and promoting PC assembly and deposition. Particularly, these ternary complexes are discovered to transit to binary binding pairs by increasing K+ concentration, undermining adhesion and assembly due to lack of bridging. The π-cation-π binding strength follows the trend of NMe4+ > K+ > Na+ > Li+. Employing the π-cation-π interaction, a deposition strategy to fabricate π-conjugated moiety based adhesive coatings on different substrates is realized. Our findings provide useful insights in engineering wet adhesives and coatings with reversible adhesion properties, and more broadly, with implications on rationalizing biological assembly.
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Affiliation(s)
- Li Xiang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Jiawen Zhang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Wenda Wang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Lu Gong
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Ling Zhang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Bin Yan
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada; College of Light Industry, Textile & Food Engineering, Sichuan University, Chengdu 610065, China
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada.
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Wu X, Ryder MP, McGuire J, Snider JL, Schilke KF. Sequential and competitive adsorption of peptides at pendant PEO layers. Colloids Surf B Biointerfaces 2015; 130:69-76. [PMID: 25909181 DOI: 10.1016/j.colsurfb.2015.04.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 04/05/2015] [Accepted: 04/06/2015] [Indexed: 11/24/2022]
Abstract
Earlier work provided direction for development of responsive drug delivery systems based on modulation of the structure, amphiphilicity, and surface density of bioactive peptides entrapped within pendant polyethylene oxide (PEO) brush layers. In this work, we describe the sequential and competitive adsorption behavior of such peptides at pendant PEO layers. Three cationic peptides were used for this purpose: the arginine-rich, amphiphilic peptide WLBU2, a peptide chemically identical to WLBU2 but of scrambled sequence (S-WLBU2), and the non-amphiphilic peptide poly-L-arginine (PLR). Optical waveguide lightmode spectroscopy (OWLS) was used to quantify the rate and extent of peptide adsorption and elution at surfaces coated with PEO. UV spectroscopy and time-of-flight secondary ion mass spectrometry (TOF-SIMS) were used to quantify the extent of peptide exchange during the course of sequential and competitive adsorption. Circular dichroism (CD) was used to evaluate conformational changes after adsorption of peptide mixtures at PEO-coated silica nanoparticles. Results indicated that amphiphilic peptides are able to displace adsorbed, non-amphiphilic peptides in PEO layers, while non-amphiphilic peptides were not able to displace more amphiphilic peptides. In addition, peptides of greater amphiphilicity dominated the adsorption at the PEO layer from mixtures with less amphiphilic or non-amphiphilic peptides.
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Affiliation(s)
| | - Matthew P Ryder
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, OR 97331, USA
| | - Joseph McGuire
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, OR 97331, USA
| | | | - Karl F Schilke
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, OR 97331, USA.
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5
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Milov AD, Samoilova RI, Tsvetkov YD, Peggion C, Formaggio F, Toniolo C. Peptides on the Surface. PELDOR Data for Spin-Labeled Alamethicin F50/5 Analogues on Organic Sorbent. J Phys Chem B 2014; 118:7085-90. [DOI: 10.1021/jp503691n] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Alexander D. Milov
- V.V.
Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russian Federation
| | - Rimma I. Samoilova
- V.V.
Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russian Federation
| | - Yuri D. Tsvetkov
- V.V.
Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russian Federation
| | - Cristina Peggion
- Institute
of Biomolecular Chemistry, Padova Unit, CNR, Department of Chemistry, University of Padova, 35131 Padova, Italy
| | - Fernando Formaggio
- Institute
of Biomolecular Chemistry, Padova Unit, CNR, Department of Chemistry, University of Padova, 35131 Padova, Italy
| | - Claudio Toniolo
- Institute
of Biomolecular Chemistry, Padova Unit, CNR, Department of Chemistry, University of Padova, 35131 Padova, Italy
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6
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Wu X, Ryder MP, McGuire J, Schilke KF. Concentration effects on peptide elution from pendant PEO layers. Colloids Surf B Biointerfaces 2014; 118:210-7. [PMID: 24780434 DOI: 10.1016/j.colsurfb.2014.03.056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Revised: 03/28/2014] [Accepted: 03/30/2014] [Indexed: 11/29/2022]
Abstract
In earlier work, we have provided direction for development of responsive drug delivery systems based on modulation of structure and amphiphilicity of bioactive peptides entrapped within pendant polyethylene oxide (PEO) brush layers. Amphiphilicity promotes retention of the peptides within the hydrophobic inner region of the PEO brush layer. In this work, we describe the effects of peptide surface density on the conformational changes caused by peptide-peptide interactions, and show that this phenomenon substantially affects the rate and extent of peptide elution from PEO brush layers. Three cationic peptides were used in this study: the arginine-rich amphiphilic peptide WLBU2, the chemically identical but scrambled peptide S-WLBU2, and the non-amphiphilic homopolymer poly-l-arginine (PLR). Circular dichroism (CD) was used to evaluate surface density effects on the structure of these peptides at uncoated (hydrophobic) and PEO-coated silica nanoparticles. UV spectroscopy and a quartz crystal microbalance with dissipation monitoring (QCM-D) were used to quantify changes in the extent of peptide elution caused by those conformational changes. For amphiphilic peptides at sufficiently high surface density, peptide-peptide interactions result in conformational changes which compromise their resistance to elution. In contrast, elution of a non-amphiphilic peptide is substantially independent of its surface density, presumably due to the absence of peptide-peptide interactions. The results presented here provide a strategy to control the rate and extent of release of bioactive peptides from PEO layers, based on modulation of their amphiphilicity and surface density.
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Affiliation(s)
- Xiangming Wu
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, OR 97331, USA
| | - Matthew P Ryder
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, OR 97331, USA
| | - Joseph McGuire
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, OR 97331, USA
| | - Karl F Schilke
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, OR 97331, USA.
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