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Okamoto Y, Higuchi M, Matsubara S. Vesicle-like Nanocapsules Formed by Self-Assembly of Peptides with Oligoproline and -Leucine. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:12802-12809. [PMID: 38850260 DOI: 10.1021/acs.langmuir.4c01412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2024]
Abstract
Since drug carriers are envisaged to be used in a wide variety of situations and environments, nanocarriers with diverse properties, such as biocompatibility, biodegradability, nonimmunogenicity, adequate particle size, robustness, and cell permeability, are required. Here, we report the construction of novel nanocapsules with the above-mentioned features by the self-assembly of peptides composed of oligoproline and oligoleucine (i.e., H-Pro10Leu4-NH2 and H-Pro10Leu6-NH2). The peptides self-organized via hydrogen bonds and hydrophobic interactions between oligoleucine moieties to form vesicle-like nanocapsules with cationic oligoproline exposed on the surface. The guest encapsulation experiments revealed that the nanocapsules were capable of uptake of both water-soluble and insoluble compounds. Furthermore, positively charged and/or oligoproline-based peptides are known to improve cell permeability and cellular uptake, suggesting that the peptide nanocapsules are good candidates for nanocarriers to complement liposomes and polymer micelles.
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Affiliation(s)
- Yui Okamoto
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
| | - Masahiro Higuchi
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
| | - Shogo Matsubara
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
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2
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Synytsya A, Janstová D, Šmidová M, Synytsya A, Petrtýl J. Evaluation of IR and Raman spectroscopic markers of human collagens: Insides for indicating colorectal carcinogenesis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 296:122664. [PMID: 36996519 DOI: 10.1016/j.saa.2023.122664] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 02/26/2023] [Accepted: 03/21/2023] [Indexed: 06/19/2023]
Abstract
Vibrational spectroscopic methods are widely used in the molecular diagnostics of carcinogenesis. Collagen, a component of connective tissue, plays a special role as a biochemical marker of pathological changes in tissues. The vibrational bands of collagens are very promising to distinguish between normal colon tissue, benign and malignant colon polyps. Differences in these bands indicate changes in the amount, structure, conformation and the ratio between the individual structural forms (subtypes) of this protein. The screening of specific collagen markers of colorectal carcinogenesis was carried out based on the FTIR and Raman (λex 785 nm) spectra of colon tissue samples and purified human collagens. It was found that individual types of human collagens showed significant differences in their vibrational spectra, and specific spectral markers were found for them. These collagen bands were assigned to specific vibrations in the polypeptide backbone, amino acid side chains and carbohydrate moieties. The corresponding spectral regions for colon tissues and colon polyps were investigated for the contribution of collagen vibrations. Mentioned spectral differences in collagen spectroscopic markers could be of interest for early ex vivo diagnosis of colorectal carcinoma if combine vibrational spectroscopy and colonoscopy.
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Affiliation(s)
- Alla Synytsya
- Department of Analytical Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic.
| | - Daniela Janstová
- Department of Analytical Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Miroslava Šmidová
- Department of Analytical Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Andriy Synytsya
- Department of Carbohydrates and Cereals, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Jaromír Petrtýl
- 4th Internal Clinic-Gastroenterology and Hepatology, 1(st) Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, U Nemocnice 2, 128 00 Prague 2, Czech Republic
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3
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Hostert JD, Loney CN, Pramounmat N, Yan K, Su Z, Renner JN. Self-Assembly and Rearrangement of a Polyproline II Helix Peptide on Gold. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:6115-6122. [PMID: 33974431 DOI: 10.1021/acs.langmuir.0c03583] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Polyproline peptide sequences have gained popularity as anchors for peptide-based self-assembled monolayers (SAMs) due to their attractive properties. In this work, peptides containing the polyproline II helix (PPII) conformation were designed and assembled on gold (Au). A quartz crystal microbalance with dissipation was used to characterize SAM formation kinetics and related properties. Peptides were designed with the sequence (GPPPPPG)2C. It was discovered that a biexponential adsorption and rearrangement model describes the binding kinetics of the PPII-containing peptide on Au. In this model, an initial reversible binding step is followed by an irreversible rearrangement step, given by parameter kt. This study found kt to be approximately 0.00064 s-1 for the PPII-containing peptides. Similarly, we found that the adsorption of the PPII-containing peptide on Au, given by ΔGads, was thermodynamically favorable (-7.8 kcal mol-1) and comparable to other common thiol terminated SAMs on Au. Furthermore, we characterized SAM properties via QCM-D, Fourier-transform infrared (FTIR) spectroscopy, and electrochemical techniques to reveal high molecular density SAMs consisting of PPII helices. In addition, these SAMs were found to have high antifouling properties. Overall, this study characterizes the fundamental assembly mechanisms, particularly, rearrangement of PPII-containing peptides for the first time, which will be useful in the designing of future peptide-based SAMs with high surface coverage and antifouling properties.
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Affiliation(s)
- Jacob D Hostert
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Charles N Loney
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Nuttanit Pramounmat
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Katherine Yan
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Zihang Su
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Julie N Renner
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
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Loney CN, Perez Bakovic SI, Xu C, Graybill A, Greenlee LF, Renner JN. Interactions of Polyproline II Helix Peptides with Iron(III) Oxide. ChemistrySelect 2019. [DOI: 10.1002/slct.201901817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Charles N. Loney
- Department of Chemical and Biomolecular EngineeringCase Western Reserve University 10900 Euclid Ave. Cleveland, OH 44106
| | - Sergio I. Perez Bakovic
- Ralph E. Martin Department of Chemical EngineeringUniversity of Arkansas 4183 Bell Engineering Center Fayetteville, AR 72701
| | - Cheyan Xu
- Department of Chemical and Biomolecular EngineeringCase Western Reserve University 10900 Euclid Ave. Cleveland, OH 44106
| | - Ashley Graybill
- Department of Chemical and Biomolecular EngineeringCase Western Reserve University 10900 Euclid Ave. Cleveland, OH 44106
| | - Lauren F. Greenlee
- Ralph E. Martin Department of Chemical EngineeringUniversity of Arkansas 4183 Bell Engineering Center Fayetteville, AR 72701
| | - Julie N. Renner
- Department of Chemical and Biomolecular EngineeringCase Western Reserve University 10900 Euclid Ave. Cleveland, OH 44106
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5
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Amdursky N. Electron Transfer across Helical Peptides. Chempluschem 2015; 80:1075-1095. [DOI: 10.1002/cplu.201500121] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 05/06/2015] [Indexed: 02/05/2023]
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Chen S, Itoh Y, Masuda T, Shimizu S, Zhao J, Ma J, Nakamura S, Okuro K, Noguchi H, Uosaki K, Aida T. Ionic interactions. Subnanoscale hydrophobic modulation of salt bridges in aqueous media. Science 2015; 348:555-9. [PMID: 25931555 DOI: 10.1126/science.aaa7532] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Polar interactions such as electrostatic forces and hydrogen bonds play an essential role in biological molecular recognition. On a protein surface, polar interactions occur mostly in a hydrophobic environment because nonpolar amino acid residues cover ~75% of the protein surface. We report that ionic interactions on a hydrophobic surface are modulated by their subnanoscale distance to the surface. We developed a series of ionic head groups-appended self-assembled monolayers with C2, C6, C8, and C12 space-filling alkyl chains, which capture a dendritic guest via the formation of multiple salt bridges. The guest release upon protonolysis is progressively suppressed when its distance from the background hydrophobe changes from 1.2 (C2) to 0.2 (C12) nanometers, with an increase in salt bridge strength of ~3.9 kilocalories per mole.
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Affiliation(s)
- Shuo Chen
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yoshimitsu Itoh
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| | - Takuya Masuda
- Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
| | - Seishi Shimizu
- York Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York YO10 5DD, UK
| | - Jun Zhao
- Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Jing Ma
- Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Shugo Nakamura
- Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Kou Okuro
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Hidenori Noguchi
- Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan. International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan. Graduate School of Chemical Science and Engineering, Hokkaido University, Sapporo 060-0810, Japan
| | - Kohei Uosaki
- Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan. International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan. Graduate School of Chemical Science and Engineering, Hokkaido University, Sapporo 060-0810, Japan
| | - Takuzo Aida
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan. RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
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Miura T, Seki K. Effects of surface affinity on the ordering dynamics of self-assembled monolayers of chain molecules: Transition from a parallel to a perpendicular structure. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2015; 91:052604. [PMID: 26066191 DOI: 10.1103/physreve.91.052604] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Indexed: 06/04/2023]
Abstract
The effects of surface interactions on the ordering dynamics of self-assembled monolayers (SAM) of chain molecules were studied using molecular dynamics simulations. When the strength of surface-chain interactions was equal to or less than that of chain-chain interactions, domains of chain molecules adsorbed perpendicular to the surface ("upright" chains) formed on the surface. Although chain molecules adsorbed parallel to the surface ("lying" chains) were initially observed on the surface, they did not develop into two-dimensionally aligned structures. In contrast, when the strength of surface-chain interactions was at least twice that of chain-chain interactions, the proportion of upright chain molecules was initially small, and the reorientation of lying chains was observed shortly afterwards. In this case, the reorientation from lying to upright configuration developed slowly from the domain boundaries of two-dimensionally aligned structures late in the calculation period. Although the orientation processes of chain molecules on surfaces were strongly influenced by the strength of surface-chain interactions, the total adsorption rate on the surface was not. We also analyzed the maximum area of domains formed by lying chains. The development of two-dimensionally aligned domains required strong surface-chain interactions to prevent the spontaneous formation of nuclei of upright domains.
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Affiliation(s)
- Toshiaki Miura
- National Institute of Advanced Industrial Science and Technology (AIST), AIST Central2, 1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Kazuhiko Seki
- National Institute of Advanced Industrial Science and Technology (AIST), AIST Central2, 1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
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Kokoschka M, Henry JB, Bandarenka AS. Multiparametric characterization of nonelectroactive self-assembled monolayers during their formation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:9909-9917. [PMID: 23845034 DOI: 10.1021/la400749m] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The formation of nonelectroactive self-assembled monolayers (SAMs) at the electrode/electrolyte interface was characterized with simultaneous impedance, gravimetric, and direct current measurements. In the presence of specifically adsorbing inorganic ions, this provides key information about the formation of SAMs. Gravimetric measurements allow an estimation of the adsorbate surface coverage; and completion of the assembly process can then be monitored in real-time. Electrochemical impedance spectroscopy measurements play a multifunctional role: they enable elucidation of the physical models of the interface, provide the information about the effective capacitance of SAMs thus probing the dielectric properties of the adsorbed layers, and evaluate the ability of charged electrolyte components to approach the electrode surface through the SAM (using adsorbing/desorbing SO4(2-) as an electroactive probe). The latter is important to assess the extent of defects in the formed organic layers. Finally, monitoring the direct current during SAM formation together with the collected gravimetric data can give additional important information about the process. A series of n-mercaptoalcohols with different hydrocarbon chain length adsorbing at Au electrodes was used as the model object to evaluate the proposed approach.
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Affiliation(s)
- Malte Kokoschka
- Institute of Organic Chemistry and Biochemistry and Gilead Sciences Research Center, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague, Czech Republic
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